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Insulin sensitization by small molecules enhancing GLUT4 translocation.
Terry C Yin1, Jonathan G Van Vranken2, Dhiraj Srivastava3
1Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, IA 52242, USA; Fraternal Order of Eagle Diabetes Research Center, University of Iowa, Iowa City, IA 52242, USA; Pappajohn Biomedical Institute, University of Iowa, Iowa City, IA 52242, USA.
Cell Chemical Biology
|July 15, 2023
Summary
Researchers identified novel small molecules that enhance insulin action by targeting Unc119 proteins. These compounds show potential for treating type II diabetes by improving insulin sensitivity and glucose uptake.
Area of Science:
- Biochemistry
- Molecular Biology
- Pharmacology
Background:
- Insulin resistance (IR) is a primary driver of type II diabetes, with limited safe therapeutic options.
- Current treatments for IR often have side effects or limited efficacy.
Purpose of the Study:
- To identify novel small molecules that can potentiate insulin action and improve insulin sensitivity.
- To elucidate the molecular targets and mechanisms of these identified insulin sensitizers.
Main Methods:
- High-throughput screening assay measuring real-time glucose transporter 4 (GLUT4) translocation.
- In vivo studies in a model of insulin resistance.
- Proteomic and CRISPR-based approaches for target identification.
- Structural biology to determine the Unc119-compound complex structure.
Main Results:
- Identification of small molecules that enhance insulin-stimulated GLUT4 translocation.
- Demonstration of improved glucose tolerance and uptake in vivo.
- Unc119 proteins identified as the molecular targets of these insulin sensitizers.
- Structural elucidation of Unc119 bound to an identified compound.
Conclusions:
- Novel insulin sensitizers targeting Unc119 proteins have been discovered.
- These compounds hold potential for development into safe and effective diabetes treatments.
- Unc119 proteins represent a promising new target for therapeutic intervention in insulin resistance.
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