Related Experiment Video

Updated: May 5, 2026

Leprdb Mouse Model of Type 2 Diabetes: Pancreatic Islet Isolation and Live-cell 2-Photon Imaging Of Intact Islets
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Leprdb Mouse Model of Type 2 Diabetes: Pancreatic Islet Isolation and Live-cell 2-Photon Imaging Of Intact Islets

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Targeting the Ras-Ral Signaling Axis in Type 2 Diabetes Mellitus: A Dual-Modulation Approach to Correcting Insulin

Narayanan Thulasi1, Kannan Harithpriya1, Kumar Ganesan2

  • 1Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India.

Pharmaceuticals (Basel, Switzerland)
|May 4, 2026
PubMed

Insights

Type 2 diabetes involves an imbalance in Ras and Ral signaling. Targeting this Ras-Ral axis may offer new precision medicine strategies for improving glucose homeostasis and treating diabetes.

Area of Science:

  • Metabolic signaling pathways
  • Endocrinology and diabetes research

Background:

  • Type 2 diabetes mellitus (T2DM) is characterized by insulin resistance and pancreatic beta-cell dysfunction.
  • Ras GTPases are implicated in oncogenic signaling, but emerging evidence highlights their role in glucose homeostasis via the Ras-Ral axis.

Purpose of the Study:

  • To review the distinct roles of Ras and Ral in metabolism.
  • To propose a dual-pathway hypothesis for T2DM pathophysiology involving Ras-Ral axis imbalance.
  • To explore therapeutic strategies for rebalancing the Ras-Ral axis in T2DM.

Main Methods:

  • Literature review synthesizing current knowledge on Ras and Ral in metabolism.
  • Analysis of signaling pathways (MAPK/PI3K) involved in Ras-mediated insulin resistance.
  • Evaluation of existing and emerging therapeutic agents targeting the Ras-Ral axis.

Main Results:

  • Ras hyperactivation contributes to insulin resistance and inflammation.
  • RalA plays a protective role by supporting GLUT4 translocation and insulin granule exocytosis.
  • T2DM pathophysiology may stem from excessive Ras signaling and diminished Ral activity.

Conclusions:

  • The Ras-Ral axis is a critical regulator of glucose homeostasis with dual roles in T2DM.
  • Rebalancing this axis through targeted inhibition of Ras and enhancement of Ral activity presents a promising therapeutic avenue.
  • Further research is needed to validate the Ras-Ral axis for precision medicine in T2DM.
Keywords:
Ral GTPasesRas GTPasesinsulin resistancemolecular therapeuticstype 2 diabetes mellitusβ-cell dysfunction

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