Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 3K7, Canada.; Molecular Medicine Research Laboratories, Robarts Research Institute, London, ON N6A 3K7, Canada.
Dr. Bell studies how certain types of stem cells, specifically multipotent stromal cells, can help regenerate insulin-producing cells in individuals with diabetes. His research explores various treatments, including injections of cell-derived substances, to manage blood sugar levels effectively. Additionally, he investigates genetic factors that influence diabetes, aiming to educate healthcare professionals and improve diagnostic methods for conditions like Maturity-Onset Diabetes of the Young (MODY). Through these studies, he seeks to develop new approaches that can empower patients to better manage their diabetes.
Key findings
In a mouse study, treatment with bone marrow-derived stem cell proteins increased insulin-producing beta cells from about 1% to 5% and improved blood sugar levels.
A concentrated solution from multipotent stromal cells injected into diabetic mice led to a significant increase in insulin production and reduced high blood sugar levels.
In his examination of genetic influences, Dr. Bell identified a protective variant in the SLC30A8 gene associated with a lower risk of type 2 diabetes among a study population of over 45,000 individuals.
Frequently asked questions
Does Dr. Bell study diabetes?
Yes, he focuses on improving treatments for diabetes, particularly type 1 and monogenic diabetes.
What sort of treatments has Dr. Bell researched?
He has researched the use of stem cells and their secreted proteins to regenerate insulin-producing cells in the pancreas.
Is Dr. Bell's work relevant to patients with Maturity-Onset Diabetes of the Young (MODY)?
Yes, he investigates the genetic testing and diagnosis of MODY to ensure patients receive appropriate care.
How does Dr. Bell's research help patients?
His research aims to identify new treatment methods that can enhance insulin production and blood sugar control in diabetes patients.
What is the potential impact of Dr. Bell's findings on vaccines?
His studies on immune cells may lead to better vaccine responses and protection against viral infections, benefiting a wide range of patients.
Publications in plain English
Therapeutic Activities of Multipotent Stromal Cells for Islet Regeneration.
2026
Cells
Rasiwala N, Bell GI, Al-Banaa NN, Hess DA
Plain English This study examined the use of multipotent stromal cells (MSC) from human bone marrow to help regenerate insulin-producing cells in the pancreas, which are damaged in diabetes. Researchers found that MSCs can reduce high blood sugar levels and promote the repair of pancreatic islets, but the exact ways they do this are still not fully understood. This research is important because improving beta cell regeneration could lead to better treatments for diabetes and improved patient outcomes.
Who this helps: Patients with diabetes, particularly those with type 1 diabetes.
Contribution of cytokeratin 19-expressing cells towards islet regeneration induced by multipotent stromal cell secreted proteins.
2025
Stem cells (Dayton, Ohio)
Rasiwala N, Bell GI, Xenocostas A, Hess DA
Plain English Researchers studied how certain cells in the pancreas, known as CK19-expressing cells, can help regenerate insulin-producing beta cells in mice with a diabetes-like condition. They found that when these mice received a special treatment derived from bone marrow stem cells, the number of beta cells increased fivefold—from about 1% to 5%—and their blood sugar levels improved. This matters because it suggests a new way to help people with Type 1 diabetes recover insulin production by encouraging growth from existing pancreatic cells.
Who this helps: This benefits patients with Type 1 diabetes, especially those looking for new treatments.
Implementing genetic testing in diabetes: Knowledge, perceptions of healthcare professionals, and barriers in a developing country.
2024
Population medicine
Balogun WO, Naylor R, Adedokun BO, Ogunniyi A, Olopade OI +3 more
Plain English This study looked at how much Nigerian healthcare professionals know about a specific type of diabetes called Maturity-Onset Diabetes of the Young (MODY) and the obstacles they face in using genetic testing to diagnose it. They found that while 43.4% felt they had moderate knowledge of MODY, 72.7% could not correctly answer most MODY-specific questions. The results highlight a critical need for better education and improved access to genetic testing, as many professionals (80%) believe testing is important for diabetes care but face barriers like limited facilities.
Who this helps: This helps patients with diabetes by ensuring they receive accurate diagnoses and better treatment options.
Targeting the MR1-MAIT cell axis improves vaccine efficacy and affords protection against viral pathogens.
2023
PLoS pathogens
Rashu R, Ninkov M, Wardell CM, Benoit JM, Wang NI +14 more
Plain English Researchers studied how a substance called 5-OP-RU can boost the effectiveness of vaccines against viral infections, like flu and COVID-19, by helping special immune cells called MAIT cells respond better. They found that using 5-OP-RU along with viral vaccines increased the number of active MAIT cells and improved the immune response. Importantly, this approach worked well in both young and old mice, indicating it could be effective across different age groups.
Who this helps: This benefits patients by potentially improving vaccine responses and protection against viral infections.
Ultrafiltration and Injection of Islet Regenerative Stimuli Secreted by Pancreatic Mesenchymal Stromal Cells.
2021
Stem cells and development
Cooper TT, Sherman SE, Bell GI, Dayarathna T, McRae DM +5 more
Plain English This study investigated a treatment using substances derived from human pancreatic cells to help regenerate insulin-producing cells in the pancreas. Researchers found that injecting a concentrated mixture from these cells improved blood sugar control and increased the number of insulin-producing cells in mice with diabetes. Specifically, they observed a rise in insulin levels and better blood sugar management, highlighting a potential new approach to treating diabetes.
Who this helps: This helps patients with diabetes.
Decellularized adipose tissue scaffolds guide hematopoietic differentiation and stimulate vascular regeneration in a hindlimb ischemia model.
2021
Biomaterials
Leclerc CJ, Cooper TT, Bell GI, Lajoie GA, Flynn LE +1 more
Plain English This study looked at using specially prepared fat tissue to improve the treatment of critical limb ischemia (CLI), a serious condition where blood flow to the legs is restricted. Researchers found that when they used decellularized adipose tissue scaffolds to grow hematopoietic progenitor cells (HPC) from umbilical cord blood, those cells were better able to help regenerate blood vessels and improve blood flow in mice. Specifically, the scaffolds helped increase the number of capillaries and improved leg function compared to other methods, suggesting that this approach could enhance the effectiveness of treatments for CLI.
Who this helps: This benefits patients with critical limb ischemia who need better options for restoring blood flow to their legs.
Characterization of extracellular vesicles derived from mesenchymal stromal cells by surface-enhanced Raman spectroscopy.
2021
Analytical and bioanalytical chemistry
Ćulum NM, Cooper TT, Bell GI, Hess DA, Lagugné-Labarthet F
Plain English This study looked at tiny particles called extracellular vesicles (EVs) released by mesenchymal stromal cells (MSCs) that could help in medical treatments. Researchers found distinct differences between EVs from pancreatic tissue and bone marrow, identifying specific markers that help differentiate them with high accuracy—89% accuracy in distinguishing the types. This matters because being able to identify and characterize these EVs reliably could lead to better regenerative therapies for various conditions.
Who this helps: This helps patients needing regenerative treatments as well as doctors looking to improve therapeutic options.
In celebration of a century with insulin - Update of insulin gene mutations in diabetes.
2021
Molecular metabolism
Støy J, De Franco E, Ye H, Park SY, Bell GI +1 more
Plain English This study looked at genetic changes in the INS gene that cause a rare form of diabetes called monogenic diabetes. Researchers analyzed information from 389 patients belonging to 292 families and found that both dominant and recessive mutations in this gene can lead to diabetes. Understanding these mutations helps in better diagnosing and treating patients with this specific type of diabetes, which is important since these genetic factors can lead to significantly different health issues.
Who this helps: This helps patients with monogenic diabetes and their doctors by providing better insights for diagnosis and treatment.
Insight on Diagnosis and Treatment From Over a Decade of Research Through the University of Chicago Monogenic Diabetes Registry.
2021
Frontiers in clinical diabetes and healthcare
Bowden TL, Letourneau-Freiberg LR, Kandasamy B, Sanyoura M, Tian P +5 more
Plain English The University of Chicago Monogenic Diabetes Registry studied a form of diabetes caused by single gene mutations, known as monogenic diabetes, which affects up to 3.5% of young diabetes patients. Over 3,800 participants were enrolled, revealing that more than 1,100 had a known genetic cause for their diabetes, but many experienced delays in diagnosis—showing a need for better access to genetic testing covered by insurance. Understanding these factors helps improve treatment and care for patients with monogenic diabetes.
Who this helps: This benefits patients with monogenic diabetes and their healthcare providers.
Characterization of a Vimentin/Nestinproteome and tissue regenerative secretome generated by human pancreas-derived mesenchymal stromal cells.
2020
Stem cells (Dayton, Ohio)
Cooper TT, Sherman SE, Bell GI, Ma J, Kuljanin M +3 more
Plain English This study looked at a special type of cells from the human pancreas, called pancreas-derived mesenchymal stromal cells (Panc-MSCs), and compared them to similar cells from bone marrow. The researchers found that Panc-MSCs have unique properties, such as faster growth and a ability to support blood vessel development, and they also produced substances that help in healing and regeneration. Importantly, when these cells were injected into diabetic mice, they helped lower blood sugar levels.
Who this helps: This research benefits patients with diabetes and vascular diseases.
Peptide-modified methacrylated glycol chitosan hydrogels as a cell-viability supporting pro-angiogenic cell delivery platform for human adipose-derived stem/stromal cells.
2019
Journal of biomedical materials research. Part A
Dhillon J, Young SA, Sherman SE, Bell GI, Amsden BG +2 more
Plain English This study looked at how adding specific peptides to a special gel (called a hydrogel) affects the survival and function of human adipose-derived stem cells (ASCs), which can help grow new blood vessels (a process known as angiogenesis). Researchers found that ASCs did much better in the gel with the RGD peptide, showing higher survival, spreading, and activity, compared to the gel with the IKVAV peptide, where cell survival was significantly lower. This is important because it suggests that using the right materials can improve the effectiveness of stem cell therapies for healing damaged tissues.
Who this helps: This benefits patients needing improved treatments for conditions related to poor blood flow and tissue regeneration.
Functionally oriented analysis of cardiometabolic traits in a trans-ethnic sample.
2019
Human molecular genetics
Petty LE, Highland HM, Gamazon ER, Hu H, Karhade M +20 more
Plain English This study looked at how genetic factors affect cardiometabolic traits like blood pressure, body weight, and cholesterol levels using data from people of different ancestral backgrounds. Researchers analyzed genetic data from 15,755 individuals and found 20 new gene-related associations that are linked to these traits. Their work shows that a new method can effectively identify genes related to heart and metabolic health across various population groups.
Who this helps: This research benefits patients with cardiometabolic conditions by potentially guiding more personalized treatments based on genetic information.
Human Multipotent Stromal Cell Secreted Effectors Accelerate Islet Regeneration.
2019
Stem cells (Dayton, Ohio)
Kuljanin M, Elgamal RM, Bell GI, Xenocostas A, Lajoie GA +1 more
Plain English This study examined how proteins secreted by human multipotent stromal cells (hMSC) can help regenerate insulin-producing cells (islets) in the pancreas. The researchers found that injecting a concentrated solution from these hMSCs into the pancreas of diabetic mice led to a reduction in high blood sugar levels and an increase in insulin production. Specifically, the treatment improved the recovery of insulin-producing cells significantly, showing how these cells could recover and mature over time.
Who this helps: Patients with diabetes who need new ways to restore insulin production.
Exome sequencing of 20,791 cases of type 2 diabetes and 24,440 controls.
2019
Nature
Flannick J, Mercader JM, Fuchsberger C, Udler MS, Mahajan A +169 more
Plain English This study looked at the genetic data of nearly 21,000 people with type 2 diabetes (T2D) and over 24,000 without the disease to understand how certain genetic changes affect the risk of developing T2D. Researchers found important genetic links in four genes, especially a variant in the gene SLC30A8 which seems to protect against T2D. These findings are significant because they can help shape future diabetes research and treatments, although more extensive studies are needed to fully understand these genetic influences.
Who this helps: This benefits patients and researchers working on diabetes treatment and prevention.
Multiethnic Meta-Analysis Identifies RAI1 as a Possible Obstructive Sleep Apnea-related Quantitative Trait Locus in Men.
2018
American journal of respiratory cell and molecular biology
Chen H, Cade BE, Gleason KJ, Bjonnes AC, Stilp AM +57 more
Plain English This study looked at the genetics of obstructive sleep apnea (OSA) in nearly 20,000 people from different ethnic backgrounds. Researchers found a specific genetic marker (rs12936587) on chromosome 17 that is linked to a specific measure of OSA severity in men, suggesting it plays a role in how the disorder affects them differently than women. This information is important because it could lead to better understanding and treatment of OSA, which can have serious health consequences.
Who this helps: This helps patients with obstructive sleep apnea, particularly men.
Evaluating the contribution of rare variants to type 2 diabetes and related traits using pedigrees.
2018
Proceedings of the National Academy of Sciences of the United States of America
Jun G, Manning A, Almeida M, Zawistowski M, Wood AR +69 more
Plain English This study looked at how rare gene variations might contribute to type 2 diabetes in 1,034 members of 20 large Mexican-American families, who have a high rate of the disease. Researchers didn't find any rare gene variations that had a significant impact on diabetes risk or related traits like fasting glucose and insulin levels, indicating that these rare variants play only a small role in the genetic risk for diabetes within these families. Understanding this can help shape future research approaches to better identify genetic risks for diabetes and improve prevention strategies.
Who this helps: This helps researchers and doctors working on diabetes genetics.
Erratum: Sequence data and association statistics from 12,940 type 2 diabetes cases and controls.
2018
Scientific data
Flannick J, Fuchsberger C, Mahajan A, Teslovich TM, Agarwala V +296 more
Plain English This research corrected previously published data regarding 12,940 people with type 2 diabetes and those without the condition. The study aimed to analyze genetic information to better understand the links between specific genes and type 2 diabetes. Accurate data on these associations is crucial because it can help create targeted treatments and prevention strategies for diabetes.
Who this helps: Patients with type 2 diabetes and healthcare providers.
Inhibition of Aldehyde Dehydrogenase-Activity Expands Multipotent Myeloid Progenitor Cells with Vascular Regenerative Function.
2018
Stem cells (Dayton, Ohio)
Cooper TT, Sherman SE, Kuljanin M, Bell GI, Lajoie GA +1 more
Plain English This study examined how to expand specific blood cells from umbilical cord blood to help treat severe blood vessel diseases. Researchers found that by temporarily blocking a specific enzyme (ALDH), they could more than double the number of these valuable cells while keeping their ability to support blood vessel growth intact. This matters because it could lead to better treatments for patients with conditions like poor blood flow in their limbs.
Who this helps: Patients with severe vascular diseases.
Femtosecond laser desorption ionization mass spectrometry imaging and multivariate analysis of lipids in pancreatic tissue.
2018
Biointerphases
Walker AV, Gelb LD, Barry GE, Subanajouy P, Poudel A +4 more
Plain English Researchers used a special laser technique to create detailed images of fats, called lipids, in human pancreatic tissue. They found that the images could clearly show where lipids were present and identified some of their types, such as phosphatidylcholines and fatty acids, although they couldn’t fully identify all lipids. This research is important because understanding lipid distribution in the pancreas could lead to better insights into pancreatic diseases.
Who this helps: Patients with pancreatic conditions and their doctors.
BMS 493 Modulates Retinoic Acid-Induced Differentiation During Expansion of Human Hematopoietic Progenitor Cells for Islet Regeneration.
2018
Stem cells and development
Elgamal RM, Bell GI, Krause SCT, Hess DA
Plain English This research studied a way to grow special blood cells from umbilical cord blood to help regenerate insulin-producing cells in diabetes treatments. The scientists found that using a substance called BMS 493 during the growth process doubled the number of usable cells and improved certain characteristics of these cells, which could help future diabetes therapies. However, despite these improvements, the expanded cells still couldn't effectively lower blood sugar in tested mice, indicating that more work is needed to ensure these cells maintain their regenerative abilities.
Who this helps: This benefits patients with diabetes by potentially improving future treatment options.
Inhibition of Retinoic Acid Production Expands a Megakaryocyte-Enriched Subpopulation with Islet Regenerative Function.
2018
Stem cells and development
Cooper TT, Bell GI, Hess DA
Plain English This study focused on a specific group of cells from human umbilical cord blood that can help regenerate insulin-producing cells in the pancreas. Researchers found that by using a chemical (DEAB) to block a certain process, they could grow these cells significantly—over 20 times more—but unfortunately, these expanded cells did not promote the regeneration of insulin-producing cells when tested in mice. However, these treated cells did reduce high blood sugar levels and increased the number of insulin-producing cells in the mice.
Who this helps: This research benefits doctors and patients with diabetes by exploring new ways to regenerate insulin-producing cells in the pancreas.
Driver mutations in Janus kinases in a mouse model of B-cell leukemia induced by deletion of PU.1 and Spi-B.
2018
Blood advances
Batista CR, Lim M, Laramée AS, Abu-Sardanah F, Xu LS +4 more
Plain English This study looked at how certain mutations affect the development of a type of blood cancer called B-cell leukemia. Researchers created a mouse model with specific genetic changes and found that, on average, the mice developed leukemia within 18 weeks. They identified important mutations in genes related to Janus kinases, which help the cancer grow and survive, indicating these mutations play a significant role in the disease's progression.
Who this helps: This research benefits patients with B-cell leukemia and their doctors by enhancing understanding of the disease's development and potential treatments.
Quantitative Proteomics Evaluation of Human Multipotent Stromal Cell for β Cell Regeneration.
2018
Cell reports
Kuljanin M, Elgamal RM, Bell GI, Xenocostas D, Xenocostas A +2 more
Plain English This study looked at human multipotent stromal cells (hMSCs) to see how well they can help regenerate insulin-producing cells in diabetes. Researchers developed a new test that highlighted 16 specific proteins in hMSC samples that are linked to effective cell regeneration. They confirmed this by testing in mice and found that the identified proteins can predict which hMSCs are more likely to help restore function in diabetic conditions.
Who this helps: This benefits patients with diabetes by improving the selection of stem cell treatments.
A Low-Frequency InactivatingVariant Enriched in the Finnish Population Is Associated With Fasting Insulin Levels and Type 2 Diabetes Risk.
2017
Diabetes
Manning A, Highland HM, Gasser J, Sim X, Tukiainen T +258 more
Plain English This study looked at a specific genetic variant found in the Finnish population and its link to insulin levels and the risk of type 2 diabetes. Researchers discovered that a variant called p.Pro50Thr is found in about 1.1% of Finns and is connected to a 12% increase in fasting insulin levels, as well as a higher risk of developing type 2 diabetes. This matters because understanding this genetic factor can help identify those at greater risk and improve diabetes prevention strategies.
Who this helps: This helps patients at risk for type 2 diabetes and their doctors.
In vivo measurement and biological characterisation of the diabetes-associated mutant insulin p.R46Q (GlnB22-insulin).
2017
Diabetologia
Støy J, Olsen J, Park SY, Gregersen S, Hjørringgaard CU +1 more
Plain English This study focused on a specific insulin mutation called p.R46Q, which is linked to a form of diabetes known as MODY, in an 18-year-old woman. Researchers found that this mutant insulin was present at 1.5 times the level of normal insulin during a glucose tolerance test but had a weaker ability to bind to insulin receptors. These findings suggest that while beta cells can handle this mutant insulin without causing stress, high levels of it could lead to challenges in managing diabetes effectively.
Who this helps: This research benefits doctors and patients with MODY and other diabetes-related conditions linked to insulin mutations.
Expansion of Umbilical Cord Blood Aldehyde Dehydrogenase Expressing Cells Generates Myeloid Progenitor Cells that Stimulate Limb Revascularization.
2017
Stem cells translational medicine
Putman DM, Cooper TT, Sherman SE, Seneviratne AK, Hewitt M +2 more
Plain English This study focused on enhancing a specific type of cell from human umbilical cord blood that helps blood vessel growth, known as ALDH cells. Researchers found they could increase these cells by over 18 times in just six days. They discovered that using these expanded cells in mice improved blood flow and helped the limbs recover better compared to the control group, suggesting a significant potential for treating severe vascular diseases in patients.
Who this helps: This benefits patients with severe limb problems due to poor blood circulation, such as those with critical limb ischemia.
Proteomic characterisation reveals active Wnt-signalling by human multipotent stromal cells as a key regulator of beta cell survival and proliferation.
2017
Diabetologia
Kuljanin M, Bell GI, Sherman SE, Lajoie GA, Hess DA
Plain English Researchers studied how certain cells from human bone marrow, called multipotent stromal cells (MSCs), can help regenerate insulin-producing beta cells, which is important for diabetes treatment. They found that when these MSCs were treated to enhance a specific signaling pathway, known as Wnt signaling, they produced proteins that improved the survival and growth of beta cells by 13%. This is significant because it highlights a potential method to increase the number of healthy beta cells in diabetes patients, helping better manage their condition.
Who this helps: Patients with diabetes.
A Loss-of-Function Splice Acceptor Variant inIs Protective for Type 2 Diabetes.
2017
Diabetes
Mercader JM, Liao RG, Bell AD, Dymek Z, Estrada K +77 more
Plain English This study looked at the genetics of Type 2 diabetes (T2D) in over 21,000 people, finding a new genetic variant that reduces the risk of developing T2D by about 20%. This variant is more common in the Mexican population, but rare in Europeans, and it seems to lower levels of a specific protein linked to diabetes. Understanding this genetic factor could lead to new ways to treat or prevent T2D without major health risks.
Who this helps: This helps patients at risk for Type 2 diabetes and doctors looking for new treatment options.
Sequence data and association statistics from 12,940 type 2 diabetes cases and controls.
2017
Scientific data
Flannick J, Fuchsberger C, Mahajan A, Teslovich TM, Agarwala V +296 more
Plain English This study looked at the genetic differences among nearly 13,000 people with type 2 diabetes (T2D) and others without it to better understand the disease. They identified over 27 million genetic variations, including almost all low-frequency changes in different DNA areas among these individuals. By analyzing these genetic variations, researchers created the most comprehensive reference so far for linking genetics to T2D, which can help with future research and treatments.
Who this helps: This helps researchers and doctors working on treatments for type 2 diabetes.
Expanded Hematopoietic Progenitor Cells Reselected for High Aldehyde Dehydrogenase Activity Demonstrate Islet Regenerative Functions.
2016
Stem cells (Dayton, Ohio)
Seneviratne AK, Bell GI, Sherman SE, Cooper TT, Putman DM +1 more
Plain English This study looked at special cells from human umbilical cord blood that can help regenerate insulin-producing cells in the pancreas. Researchers found that by expanding these cells in a specific way, they were able to triple their numbers in just six days while maintaining their ability to improve blood sugar levels in mice. This is important because it offers a potential new approach to treat diabetes by enhancing the body's ability to regenerate insulin-producing cells.
Who this helps: This research benefits diabetes patients seeking new treatments.
Plain English This research looked at the role of pancreatic beta-cells, which produce insulin, in different types of diabetes. It found that even in serious cases like type 1 and type 2 diabetes, some beta-cells remain functional and can be reactivated through specific treatments, such as bariatric surgery. For example, some patients who had inactive beta-cells for decades saw them wake up and start working again in just a few weeks after treatment, suggesting that these cells can be preserved rather than permanently lost.
Who this helps: This helps patients with diabetes, particularly those with type 1 and type 2 diabetes.
Transancestral fine-mapping of four type 2 diabetes susceptibility loci highlights potential causal regulatory mechanisms.
2016
Human molecular genetics
Horikoshi M, Pasquali L, Wiltshire S, Huyghe JR, Mahajan A +54 more
Plain English This study looked at how certain genetic variations contribute to the risk of developing type 2 diabetes (T2D) in diverse populations. Researchers analyzed data from over 64,000 individuals and found seven specific genetic signals tied to T2D across different ancestry groups. Understanding these genetic factors is important because it helps identify the biological processes that lead to T2D, paving the way for better prevention and treatment strategies.
Who this helps: This helps patients at risk of type 2 diabetes and doctors treating them.
Genetic Associations with Obstructive Sleep Apnea Traits in Hispanic/Latino Americans.
2016
American journal of respiratory and critical care medicine
Cade BE, Chen H, Stilp AM, Gleason KJ, Sofer T +32 more
Plain English This study looked at the genetic factors related to obstructive sleep apnea in Hispanic and Latino Americans by analyzing data from over 12,500 participants. Researchers found two strong genetic markers linked to the condition, with one significantly associated with the apnea-hypopnea index and another related to how long respiratory events last during sleep. This is important because understanding these genetic links could help in developing targeted treatments for sleep apnea, which is connected to serious health risks like heart disease and diabetes.
Who this helps: This research benefits patients with obstructive sleep apnea and healthcare professionals dealing with their treatment.
Brief Report: Elastin Microfibril Interface 1 and Integrin-Linked Protein Kinase Are Novel Markers of Islet Regenerative Function in Human Multipotent Mesenchymal Stromal Cells.
2016
Stem cells (Dayton, Ohio)
Lavoie JR, Creskey MM, Muradia G, Bell GI, Sherman SE +5 more
Plain English This study looked at certain proteins in stem cells from human bone marrow to see how they relate to the ability of these cells to help regenerate insulin-producing islets, which are crucial for treating diabetes. The researchers found that two specific proteins, EMILIN-1 and ILK, were present in higher amounts in stem cells that could effectively lower high blood sugar levels; in fact, these proteins were linked to a significant decrease in blood glucose. Identifying these markers could help improve treatments for diabetes by using the right types of stem cells.
Who this helps: This helps patients with diabetes who might benefit from improved stem cell therapies.
Beyond type 2 diabetes, obesity and hypertension: an axis including sleep apnea, left ventricular hypertrophy, endothelial dysfunction, and aortic stiffness among Mexican Americans in Starr County, Texas.
2016
Cardiovascular diabetology
Hanis CL, Redline S, Cade BE, Bell GI, Cox NJ +3 more
Plain English This study looked at the health of Mexican Americans in Starr County, Texas, focusing on less common risk factors for serious conditions like type 2 diabetes, obesity, and hypertension. The research showed that a significant percentage of people have related problems: 23.7% of men and 26.7% of women have type 2 diabetes, while 46.2% of men and 49.5% of women are obese, and 32.1% of men and 32.4% of women have hypertension. Alarmingly, 88% of the population has at least one of these conditions, and 50% have three or more, highlighting a serious public health issue that may develop long before these diseases become obvious.
Who this helps: This information is valuable for doctors and public health officials working to address health issues in Mexican American communities.
Fuchsberger C, Flannick J, Teslovich TM, Mahajan A, Agarwala V +296 more
Plain English This study looked at the genetic factors that contribute to type 2 diabetes by analyzing the DNA of over 115,000 people. Researchers found that most genetic variants linked to diabetes are common, not rare, and that these common variants already identified in previous studies explain much of the disease's heritability. Understanding these genetic links is crucial because it can lead to better insights into how type 2 diabetes develops and how to manage it.
Who this helps: This benefits researchers and healthcare providers working to understand and treat type 2 diabetes.
Evidence of non-pancreatic beta cell-dependent roles of Tcf7l2 in the regulation of glucose metabolism in mice.
2015
Human molecular genetics
Bailey KA, Savic D, Zielinski M, Park SY, Wang LJ +5 more
Plain English The study focused on a gene called Tcf7l2, which is linked to the risk of type 2 diabetes. Researchers found that when Tcf7l2 was overexpressed in mice, it caused issues with glucose tolerance, mainly due to its effects in tissues outside of the pancreas, even though it is known for affecting pancreatic beta cells. Specifically, the mice showed a significant worsening in glucose tolerance when Tcf7l2 was overactive in non-pancreatic tissues, emphasizing the need to explore how this gene impacts glucose metabolism in various body parts.
Who this helps: This research benefits patients with type 2 diabetes and may guide doctors in developing new treatments.
PU.1 opposes IL-7-dependent proliferation of developing B cells with involvement of the direct target gene bruton tyrosine kinase.
2015
Journal of immunology (Baltimore, Md. : 1950)
Christie DA, Xu LS, Turkistany SA, Solomon LA, Li SK +5 more
Plain English Researchers studied how specific genes in B cells affect their development and the likelihood of leukemia. They found that mice lacking the PU.1 and Spi-B genes developed leukemia at a 100% rate, with an average survival of only 21 weeks. The study revealed that these altered B cells responded too strongly to a signaling molecule called IL-7, and that increasing a gene called Bruton tyrosine kinase (BTK) could help prevent this issue by reducing cell growth and increasing cell death.
Who this helps: This research benefits patients with blood cancers and their doctors by providing insights into potential treatment strategies.
Identification and functional characterization of G6PC2 coding variants influencing glycemic traits define an effector transcript at the G6PC2-ABCB11 locus.
2015
PLoS genetics
Mahajan A, Sim X, Ng HJ, Manning A, Rivas MA +84 more
Plain English This study examined genetic variations affecting blood sugar and insulin levels in nearly 33,000 healthy people of European descent. Researchers discovered two new genetic locations related to fasting glucose and insulin, as well as multiple variants in the G6PC2 gene that lower protein levels affecting blood sugar regulation. While these genetic changes don’t significantly increase our understanding of glycemic traits, they offer important insights into how certain genes may influence diabetes risk.
Who this helps: This helps patients at risk for type 2 diabetes and their healthcare providers.
Systemic alterations in the metabolome of diabetic NOD mice delineate increased oxidative stress accompanied by reduced inflammation and hypertriglyceremia.
2015
American journal of physiology. Endocrinology and metabolism
Fahrmann J, Grapov D, Yang J, Hammock B, Fiehn O +2 more
Plain English This study looked at mice with a type 1 diabetes model to see how their metabolism changes as they either develop diabetes or not. Researchers found that diabetic mice showed signs of increased oxidative stress, reduced inflammation, and higher levels of triglycerides in their blood. Specifically, they identified over 1,000 different metabolites, showing that these metabolic changes are linked to the disease's progression.
Who this helps: This research helps patients with type 1 diabetes by identifying potential markers for the disease's development.
Continued lessons from the INS gene: an intronic mutation causing diabetes through a novel mechanism.
2015
Journal of medical genetics
Carmody D, Park SY, Ye H, Perrone ME, Alkorta-Aranburu G +5 more
Plain English This study focused on a rare genetic mutation in the insulin gene that causes diabetes, specifically in newborns. Researchers found a new mutation that leads to the production of unstable insulin transcripts, which causes diabetes without destroying pancreatic cells. This matters because understanding this mechanism can help identify and treat more cases of diabetes with genetic causes.
Who this helps: This benefits patients with neonatal diabetes and their doctors by providing insights for diagnosis and treatment.
Genome-Wide Association Study of Staphylococcus aureus Carriage in a Community-Based Sample of Mexican-Americans in Starr County, Texas.
2015
PloS one
Brown EL, Below JE, Fischer RS, Essigmann HT, Hu H +6 more
Plain English This study looked at how certain genes are linked to the presence of Staphylococcus aureus bacteria in the noses of people living in Starr County, Texas. Researchers collected nasal samples from 858 participants and found one significant gene (KAT2B) related to intermittent nasal carriage of the bacteria, and 11 other genes that may be involved with persistent or intermittent carriage. Understanding these genetic links helps in developing better treatments and prevention methods for infections that can occur after hospital stays, which is crucial since Staphylococcus aureus is a leading cause of these infections.
Who this helps: This research benefits patients who are at risk for hospital-acquired infections and their healthcare providers.
Microcephaly, epilepsy, and neonatal diabetes due to compound heterozygous mutations in IER3IP1: insights into the natural history of a rare disorder.
2014
Pediatric diabetes
Shalev SA, Tenenbaum-Rakover Y, Horovitz Y, Paz VP, Ye H +9 more
Plain English This study looked at a rare genetic disorder that causes a combination of permanent diabetes, brain abnormalities (microcephaly), and severe seizures in infants. Researchers found that a boy had two different mutations in the IER3IP1 gene, which likely led to his symptoms. He struggled with numerous health issues, including developmental delays and had a difficult health journey, eventually passing away at age 8. Understanding these mutations can help identify similar cases earlier and improve diagnosis and care for affected children.
Who this helps: This benefits patients with neonatal diabetes and their families, as well as doctors who treat them.
Genetic complexity in a Drosophila model of diabetes-associated misfolded human proinsulin.
2014
Genetics
Park SY, Ludwig MZ, Tamarina NA, He BZ, Carl SH +9 more
Plain English This study examined a fruit fly model to better understand a type of diabetes caused by defective human proinsulin. The researchers found that when they introduced a misfolded version of proinsulin into these flies, it led to noticeable changes, like smaller eye and wing structures, showing the flies experienced symptoms similar to diabetes. They also discovered that the severity of these symptoms could vary from one tissue to another despite being caused by the same genetic mutation, indicating that the disease behaves differently in different parts of the body.
Who this helps: This helps researchers and doctors develop better treatments for diabetes by improving our understanding of the disease’s genetic factors.
Effect of genetic variation in a Drosophila model of diabetes-associated misfolded human proinsulin.
2014
Genetics
He BZ, Ludwig MZ, Dickerson DA, Barse L, Arun B +8 more
Plain English This study looked at how certain genetic variations in fruit flies could help us understand a type of diabetes caused by misfolded proinsulin proteins in humans. Researchers found that changes in a specific gene, called sulfateless, affected eye development in the flies, mimicking the disease's effects observed in humans. This discovery is important because it highlights a potential connection between specific proteins and how our cells respond to misfolded proteins, which could lead to better understanding and treatment of diabetes.
Who this helps: This helps patients with diabetes and researchers studying genetic causes of the disease.
Genome-wide trans-ancestry meta-analysis provides insight into the genetic architecture of type 2 diabetes susceptibility.
2014
Nature genetics
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Plain English This study looked at the genetic factors that contribute to type 2 diabetes by combining data from different ancestry groups, including over 26,000 people with the disease and nearly 84,000 without it. Researchers found consistent genetic markers associated with type 2 diabetes across diverse groups and identified seven new genetic locations linked to the disease after analyzing additional data from over 21,000 cases. These findings are important because they enhance our understanding of how genetics influences type 2 diabetes in various populations, which can lead to better prevention and treatment strategies.
Who this helps: Patients at risk for type 2 diabetes and healthcare providers.
Role of BH3-only molecules Bim and Puma in β-cell death in Pdx1 deficiency.
2014
Diabetes
Ren D, Sun J, Wang C, Ye H, Mao L +3 more
Plain English Researchers studied the connection between a gene called PDX1, which helps regulate insulin production in the pancreas, and the death of insulin-producing cells (β-cells) in mice that developed diabetes due to PDX1 deficiency. They found that when they removed two specific proteins, Bim and Puma, from these mice, the mice had better blood sugar levels, more insulin-producing cells, and fewer dying cells. This is important because it highlights a potential way to protect insulin-producing cells and improve diabetes management.
Who this helps: This helps patients with diabetes and their doctors.
Association of a low-frequency variant in HNF1A with type 2 diabetes in a Latino population.
2014
JAMA
, Estrada K, Aukrust I, Bjørkhaug L, Burtt NP +47 more
Plain English This study looked at a rare genetic variation linked to type 2 diabetes in Latino populations. Researchers found that a specific genetic change (called p.E508K) was present in 2.1% of people with type 2 diabetes, compared to only 0.36% of those without it, suggesting those with the variant had more than five times the odds of developing diabetes. Understanding this link could help improve screening and treatment for diabetes in Latino groups.
Who this helps: This helps patients in Latino communities at risk of type 2 diabetes.
Transplantation models to characterize the mechanisms of stem cell-induced islet regeneration.
2013
Current protocols in stem cell biology
Bell GI, Seneviratne AK, Nasri GN, Hess DA
Plain English This study looked at how certain stem cells from human bone marrow can help regenerate insulin-producing cells (islets) in mice that have diabetes. Researchers found that by using specific techniques, they could isolate and expand these stem cells efficiently, and when transplanted into diabetic mice, these cells helped improve blood sugar levels significantly. This is important because it shows a potential pathway for developing new treatments for diabetes by using cell therapy to regenerate islets in patients.
Who this helps: This helps patients with diabetes.