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An Adipocyte Cell Culture Model to Study the Impact of Protein and Micro-RNA Modulation on Adipocyte Function
Published on: May 4, 2021
MicroRNAs in adipose tissue fibrosis: Mechanisms and therapeutic potential
Mei Tian1,2,3, Yang Zhou3, Yitong Guo3
1College of Pharmacy, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China.
Abstract:
Adipose tissue fibrosis, characterized by abnormal extracellular matrix deposition within adipose tissue, signifies a crucial indicator of adipose tissue malfunction, potentially leading to organ tissue dysfunction. Various factors, including a high-fat diet, non-alcoholic fatty liver disease, and insulin resistance, coincide with adipose tissue fibrosis. MicroRNAs (miRNAs) represent a class of small non-coding RNAs with significant influence on tissue fibrosis through diverse signaling pathways. For instance, in response to a high-fat diet, miRNAs can modulate signaling pathways such as TGF-β/Smad, PI3K/AKT, and PPAR-γ to impact adipose tissue fibrosis. Furthermore, miRNAs play roles in inhibiting fibrosis in different contexts: suppressing corneal fibrosis via the TGF-β/Smad pathway, mitigating cardiac fibrosis through the VEGF signaling pathway, reducing wound fibrosis via regulation of the MAPK signaling pathway, and diminishing fibrosis post-fat transplantation via involvement in the PDGFR-β signaling pathway. Notably, the secretome released by miRNA-transfected adipose-derived stem cells facilitates targeted delivery of miRNAs to evade host immune rejection, enhancing their anti-fibrotic efficacy. Hence, this study endeavors to elucidate the role and mechanism of miRNAs in adipose tissue fibrosis and explore the mechanisms and advantages of the secretome released by miRNA-transfected adipose-derived stem cells in combating fibrotic diseases.
Insights
MicroRNAs (miRNAs) are key regulators of adipose tissue fibrosis, a condition linked to metabolic dysfunction. Utilizing miRNA-transfected stem cell secretomes offers a promising therapeutic strategy against fibrotic diseases.
Area of Science:
- Biomedical Science
- Molecular Biology
- Cell Biology
Background:
- Adipose tissue fibrosis, marked by excessive extracellular matrix deposition, indicates adipose tissue dysfunction and potential organ damage.
- Conditions like high-fat diets, non-alcoholic fatty liver disease, and insulin resistance are associated with adipose tissue fibrosis.
- MicroRNAs (miRNAs) are small non-coding RNAs that critically regulate tissue fibrosis through various signaling pathways.
Purpose of the Study:
- To investigate the role and mechanisms of miRNAs in adipose tissue fibrosis.
- To explore the therapeutic potential of secretomes from miRNA-transfected adipose-derived stem cells for fibrotic diseases.
Main Methods:
- Review of literature on miRNA involvement in adipose tissue fibrosis and other fibrotic conditions.
- Analysis of miRNA-modulated signaling pathways, including TGF-β/Smad, PI3K/AKT, and MAPK.
- Examination of the anti-fibrotic effects and delivery mechanisms of stem cell secretomes.
Main Results:
- miRNAs modulate key signaling pathways (e.g., TGF-β/Smad, PI3K/AKT, PPAR-γ) influencing adipose tissue fibrosis.
- miRNAs demonstrate anti-fibrotic roles in diverse tissues, including cornea, heart, and wounds.
- Secretomes from miRNA-transfected adipose-derived stem cells offer targeted delivery and enhanced anti-fibrotic efficacy, evading immune rejection.
Conclusions:
- miRNAs are significant regulators of adipose tissue fibrosis and represent potential therapeutic targets.
- Stem cell secretomes engineered with specific miRNAs present a novel and effective strategy for treating fibrotic diseases.
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