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Related Concept Videos

Peroxisomes01:24

Peroxisomes

Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...

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High-resolution Respirometry to Measure Mitochondrial Function of Intact Beta Cells in the Presence of Natural Compounds
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Peroxyredoxin 6 Protects RIN-M5F Pancreatic Beta Cells Against Streptozotocin-Induced Senescence.

Elena G Novoselova1, Olga V Glushkova1, Maxim O Khrenov1

  • 1Institute of Cell Biophysics, FSC PBCRAS, Institutskaya str., 3, Pushchino, Moscow region, 142290, Russia.

Cellular Physiology and Biochemistry : International Journal of Experimental Cellular Physiology, Biochemistry, and Pharmacology
|September 30, 2024
PubMed
Summary

Peroxiredoxin 6 (PRDX6) may protect pancreatic beta cells from senescence, a key factor in type 2 diabetes. This senotherapy approach shows promise for diabetes treatment by reducing senescence markers and restoring cell function.

Keywords:
Streptozotocin; β-cells; RIN-m5F; ROS; Peroxiredixin 6; Н2АХ histone; р21; HSP90-β; HSP90-α

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Area of Science:

  • Cell Biology
  • Endocrinology
  • Diabetes Research

Background:

  • Pancreatic beta-cell dysfunction is linked to senescence in type 2 diabetes.
  • Senotherapy presents a potential therapeutic strategy for diabetes treatment.

Purpose of the Study:

  • To investigate the senotherapeutic potential of peroxiredoxin 6 (PRDX6).
  • To evaluate PRDX6's effect on streptozotocin-induced senescence in RIN-m5F pancreatic beta-cells.

Main Methods:

  • Induction of senescence in RIN-m5F cells using streptozotocin (STZ).
  • Treatment with PRDX6 to assess its impact on senescence markers.
  • Measurement of senescence markers including SA-beta-Gal, histone H2AX phosphorylation, p21, IL-6, IL-10, ROS, NF-kappaB activation, and HSP90 isoforms.

Main Results:

  • STZ induced beta-cell senescence, evidenced by increased SA-beta-Gal positive cells, p-H2AX, p21, and IL-6 secretion.
  • PRDX6 treatment reduced these senescence markers and decreased reactive oxygen species (ROS) production.
  • PRDX6 also restored NF-kappaB activation and modulated HSP90-alpha and HSP90-beta levels.

Conclusions:

  • PRDX6 demonstrated a protective effect against STZ-induced senescence in pancreatic beta-cells.
  • These findings suggest PRDX6 has a potential protective role in type 2 diabetes mellitus.