How high blood sugar and fat stress damages insulin-producing beta cells' nuclei
Official title: Aberrant nuclear signaling in the islet beta cell under metabolic stress
Funded at John D Dingell VA Medical Center · NIH-11257255 · Data updated 2026-11-12
The team is looking at how long-term high blood sugar and fat hurt the nucleus of insulin-producing beta cells in people with adult-onset (type 2) diabetes to understand why these cells fail.
Quick facts
| Grant type | NIH-funded research |
|---|---|
| Study type | NIH-funded research |
| Funding institution | John D Dingell VA Medical Center NIH-funded |
| Lab location | 1 site (Detroit, United States) |
| Project start | January 1, 2025 |
| Project end | December 31, 2028 |
| Funding year | 2026 |
| NIH project number | 5I01BX006377-02 |
| Project ID | NIH-11257255 on NIH RePORTER |
Who could benefit from this research
✓Could help
This research relies on donated pancreatic tissue or isolated human islets, so contributors would typically be organ donors or donor pancreas programs that include people with or without type 2 diabetes.
✕Less likely to help
People seeking an immediate treatment or those with type 1 diabetes are unlikely to receive direct, immediate benefit from this lab-focused, preclinical work.
What this research studies
From a patient's perspective, researchers are studying how metabolic stress (high glucose and fats) changes the machinery that moves important proteins in and out of the nucleus of insulin-making beta cells. They will work with lab-grown beta cells, rodent islets, and donated human islets to see whether proteins like KPNA2 and the Ran G protein are disrupted under stress. The team will use molecular tools including gene editing (CRISPR), biochemical assays, and bioinformatics to track oxidative stress and mislocalization of signaling proteins. The work aims to identify specific steps that could be targeted to protect or restore beta cell function in diabetes.
Why it matters
Potential benefit: If successful, this could point to new ways to protect or restore insulin-producing beta cells and help preserve insulin secretion in type 2 diabetes.
How similar studies have gone: Previous laboratory studies have shown that oxidative-stress pathways (like Rac1/NADPH oxidase) harm beta cells, but applying this knowledge to KPNA2-Ran nuclear transport is a novel direction that has not yet been tested clinically.
Where this research is happening
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John D Dingell VA Medical Center
Detroit, United States Active
Researchers
- Principal investigator: Kowluru, Anjaneyulu — John D Dingell VA Medical Center
- Study coordinator: Kowluru, Anjaneyulu
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.