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Updated: Nov 24, 2025
09:49
Identification, Isolation, and Characterization of Fibro-Adipogenic Progenitors FAPs and Myogenic Progenitors MPs in Skeletal Muscle in the Rat
Published on: June 9, 2021
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Adiponectin promotes myogenic differentiation via a Mef2C-AdipoR1 positive feedback loop
An Yu1, Yu Zheng2, Yuqing Gong3
1Huffington Center on Aging, Baylor College of Medicine, Houston, TX 77030, USA.
Gene
|December 28, 2020
Summary
Adiponectin and Mef2C form a positive feedback loop to enhance muscle cell differentiation. This study reveals how adiponectin signaling and Mef2C interact to promote myogenic differentiation.
Area of Science:
- Endocrinology
- Molecular Biology
- Cell Biology
Background:
- Adiponectin is a key metabolic hormone.
- Globular adiponectin is known to promote myogenic differentiation.
- The precise mechanisms underlying adiponectin's role in myogenesis are not fully elucidated.
Purpose of the Study:
- To investigate the molecular mechanisms by which adiponectin promotes myogenic differentiation.
- To explore the relationship between adiponectin signaling and the myogenic regulator Mef2C.
Main Methods:
- Quantitative analysis of adiponectin and AdipoR1 expression during myogenic differentiation.
- Assessment of Mef2C expression and its regulation by adiponectin.
- Investigation of HDAC9's role as a Mef2C transcriptional inhibitor.
- Examination of Mef2C's direct binding to the AdipoR1 promoter.
Main Results:
- Adiponectin and its receptor, AdipoR1, are upregulated during myogenic differentiation.
- Adiponectin increases Mef2C expression, a critical step for its myogenic effects.
- Adiponectin downregulates HDAC9, a transcriptional inhibitor of Mef2C.
- Mef2C overexpression upregulates adiponectin and AdipoR1, enhancing myogenesis.
- Mef2C directly binds to the AdipoR1 promoter, increasing its transcription.
Conclusions:
- Adiponectin signaling and Mef2C form a positive feedback loop.
- This loop enhances myogenic differentiation by upregulating AdipoR1 expression.
- The findings elucidate a novel regulatory mechanism in muscle development.
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