PMID- 30226559 OWN - NLM STAT- MEDLINE DCOM- 20190121 LR - 20190121 IS - 1791-244X (Electronic) IS - 1107-3756 (Print) IS - 1107-3756 (Linking) VI - 42 IP - 5 DP - 2018 Nov TI - Treatment of type 2 diabetes mellitus via reversing insulin resistance and regulating lipid homeostasis in vitro and in vivo using cajanonic acid A. PG - 2329-2342 LID - 10.3892/ijmm.2018.3836 [doi] AB - The present study investigated the effects of cajanonic acid A (CAA), extracted from the leaves of Cajanus cajan (L.) Millsp with a purity of 98.22%, on the regulatory mechanisms of glucose and lipid metabolism. HepG2 cells transfected with a protein‑tyrosine phosphatase 1B (PTP1B) overexpression plasmid were established. The cells, induced with insulin resistance by dexamethasone (Dex) treatment, together with type 2 diabetes mellitus (T2DM) model rats and ob/ob mice, were used in the present study. The effects of CAA treatment on the differentiation of 3T3‑L1 adipocytes were determined using Oil Red O. The expression levels of insulin signaling factors were detected via reverse transcription‑quantitative polymerase chain reaction and western blot analyses. The results revealed that the overexpression of PTP1B contributed to insulin resistance, which was reversed by CAA treatment via inhibiting the activity of PTP1B and by regulating the expression of associated insulin signaling factors. The treatment of cell lines with Dex led to increased expression of PTP1B but decreased glucose consumption, and decreased tyrosine phosphorylation of insulin receptor, insulin receptor substrate 1, and phosphoinositide 3‑kinase. Treatment with CAA not only reduced the fasting blood glucose levels and protected organs from damage, but also reduced the serum fasting levels of total cholesterol, triglycerides and low‑density lipoprotein cholesterol in the T2DM rats. CAA treatment also inhibited adipocyte differentiation and decreased the mRNA levels of various adipogenic genes. Furthermore, CAA treatment restored the transduction of insulin signaling by regulating the expression of PTP1B and associated insulin signaling factors. Treatment with CAA also reduced the problems associated with hyperglycemia and hyperlipidemia. In conclusion, CAA may be used to cure T2DM via restoring insulin resistance and preventing obesity. FAU - Yang, Ruiyi AU - Yang R AD - Laboratory of Chinese Herbal Drug Discovery, Institute of Tropical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China. FAU - Wang, Lu AU - Wang L AD - Laboratory of Chinese Herbal Drug Discovery, Institute of Tropical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China. FAU - Xie, Jie AU - Xie J AD - Laboratory of Chinese Herbal Drug Discovery, Institute of Tropical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China. FAU - Li, Xiang AU - Li X AD - Laboratory of Chinese Herbal Drug Discovery, Institute of Tropical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China. FAU - Liu, Shan AU - Liu S AD - Laboratory of Chinese Herbal Drug Discovery, Institute of Tropical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China. FAU - Qiu, Shengxiang AU - Qiu S AD - Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, P.R. China. FAU - Hu, Yingjie AU - Hu Y AD - Laboratory of Chinese Herbal Drug Discovery, Institute of Tropical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China. FAU - Shen, Xiaoling AU - Shen X AD - Laboratory of Chinese Herbal Drug Discovery, Institute of Tropical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China. LA - eng PT - Journal Article DEP - 20180823 PL - Greece TA - Int J Mol Med JT - International journal of molecular medicine JID - 9810955 RN - 0 (Hypoglycemic Agents) RN - 0 (Stilbenes) RN - EC 3.1.3.48 (PTPN1 protein, human) RN - EC 3.1.3.48 (Protein Tyrosine Phosphatase, Non-Receptor Type 1) RN - IY9XDZ35W2 (Glucose) SB - IM MH - 3T3-L1 Cells MH - Animals MH - Cajanus/*chemistry MH - Diabetes Mellitus, Type 2/*drug therapy/metabolism MH - Glucose/metabolism MH - Hep G2 Cells MH - Humans MH - Hypoglycemic Agents/chemistry/*therapeutic use MH - *Insulin Resistance MH - Lipid Metabolism/*drug effects MH - Male MH - Mice MH - Protein Tyrosine Phosphatase, Non-Receptor Type 1/metabolism MH - Rats, Sprague-Dawley MH - Stilbenes/chemistry/*therapeutic use PMC - PMC6192715 EDAT- 2018/09/19 06:00 MHDA- 2019/01/22 06:00 PMCR- 2018/08/23 CRDT- 2018/09/19 06:00 PHST- 2017/06/26 00:00 [received] PHST- 2018/07/25 00:00 [accepted] PHST- 2018/09/19 06:00 [pubmed] PHST- 2019/01/22 06:00 [medline] PHST- 2018/09/19 06:00 [entrez] PHST- 2018/08/23 00:00 [pmc-release] AID - ijmm-42-05-2329 [pii] AID - 10.3892/ijmm.2018.3836 [doi] PST - ppublish SO - Int J Mol Med. 2018 Nov;42(5):2329-2342. doi: 10.3892/ijmm.2018.3836. Epub 2018 Aug 23.