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Updated: Jan 18, 2026

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Published on: September 9, 2021
Calycosin improves insulin resistance by regulating the hsa-miR-324-3p/AKT pathway to inhibit FOXO3a nuclear transfer
Junling Zhu1, Rilian Lai2, Qin Zheng3
1Department of Traditional Chinese Medicine, Ningbo No.2 Hospital, Ningbo, China.
Abstract:
1. To study the effects of calycosin on palmitic acid-induced HepG2 cells, as well as the potential mechanisms of action.
Abstract:
2. Potential targets of calycosin for the alleviation of insulin resistance were predicted by network pharmacology. Glucose concentration in the culture medium was determined by the GOD-POD method. The model of insulin resistance was established by palmitic acid-induced HepG2 cells. Effects of palmitic acid and calycosin on HepG2 cell activity were determined using an MTT assay kit. The expression levels of AKT1 and FOXO3a were detected by western blot. The expression level of hsa-miR-324-3p was detected by RT-qPCR. Dual luciferase reporter assay to detect targeting of AKT1 by hsa-miR-324-3p.
Abstract:
3. AKT1 was predicted and validated as a potential target of calycosin for treatment of insulin resistance. The model of insulin resistance was successfully established by palmitic acid-induced HepG2 cells. Up-regulation of AKT1 expression inhibits FOXO3a entry into the nucleus. Calycosian was demonstrated to concentration-dependently increase the sensitivity of insulin resistance cells to insulin. The hsa-miR-324-3p was proven to exist in insulin-resistant cells. Hsa-miR-324-3p was found to target AKT1 involved in the alleviation of insulin resistance.
Abstract:
4. Calycosin inhibits FOXO3a nuclear translocation by regulating the hsa-miR-324-3p/AKT pathway, thus alleviating insulin resistance.
Insights
Calycosin alleviates insulin resistance by inhibiting FOXO3a nuclear translocation via the hsa-miR-324-3p/AKT pathway. This study identifies AKT1 as a key target for calycosin
Area of Science:
- Biochemistry
- Molecular Biology
- Pharmacology
Background:
- Insulin resistance is a major metabolic disorder.
- HepG2 cells induced with palmitic acid serve as a model for insulin resistance.
- Calycosin is a potential therapeutic agent for metabolic diseases.
Purpose of the Study:
- To investigate the effects of calycosin on palmitic acid-induced HepG2 cells.
- To elucidate the molecular mechanisms underlying calycosin's action in insulin resistance.
- To identify potential molecular targets of calycosin.
Main Methods:
- Network pharmacology for target prediction.
- Cell viability assays (MTT).
- Western blot for protein expression (AKT1, FOXO3a).
- RT-qPCR for microRNA expression (hsa-miR-324-3p).
- Dual luciferase reporter assay.
Main Results:
- Palmitic acid successfully induced insulin resistance in HepG2 cells.
- Calycosin increased insulin sensitivity in a dose-dependent manner.
- hsa-miR-324-3p was identified to target AKT1.
- Calycosin inhibited FOXO3a nuclear translocation by regulating the hsa-miR-324-3p/AKT pathway.
Conclusions:
- AKT1 is a validated target of calycosin in the context of insulin resistance.
- The hsa-miR-324-3p/AKT pathway is crucial for calycosin's therapeutic effects.
- Calycosin shows promise for treating insulin resistance through this pathway.
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