PMID- 31162246 OWN - NLM STAT- MEDLINE DCOM- 20200518 LR - 20211204 IS - 1533-4023 (Electronic) IS - 0160-2446 (Linking) VI - 73 IP - 6 DP - 2019 Jun TI - Puerarin Decreases Collagen Secretion in AngII-Induced Atrial Fibroblasts Through Inhibiting Autophagy Via the JNK-Akt-mTOR Signaling Pathway. PG - 373-382 LID - 10.1097/FJC.0000000000000672 [doi] AB - Puerarin is used to treat cardiovascular diseases due to its anti-inflammatory and antifibrotic effects. However, its mechanism of action in atrial fibroblasts is unknown. In this study, we investigated the autophagy pathway and molecular changes in angiotensin II (AngII)-stimulated atrial fibroblasts in response to puerarin treatment. Atrial fibroblasts were cultured and then subjected to stimulation with AngII and puerarin or other chemical drugs (3-MA, CQ, and SP600125). Quantitative real-time polymerase chain reaction and Western blot experiments were used to quantify the expression levels of mRNA and protein. mCherry-GFP-LC3 adenovirus was applied to reflect the autophagic flux. The results showed aggravating levels of autophagy and collagen deposit in the presence of AngII. Puerarin inhibited autophagy and decreased collagen secretion in a dose-dependent manner in atrial fibroblasts. Furthermore, phosphorylation of JNK was down-regulated in response to puerarin, whereas phosphorylation of Akt and mammalian target of rapamycin (mTOR) was upregulated. Interestingly, reduced autophagy and collagen secretion were observed when the JNK signaling pathway was blocked using SP600125. We also observed upregulation of Akt and mTOR phosphorylation in the presence of SP600125. These results suggest that puerarin exerts its antifibrotic effect in atrial fibroblasts partly through the inhibition of autophagy. Furthermore, the mechanism of action of puerarin in fibroblast autophagy seems to be mediated partly through JNK-Akt-mTOR signaling. FAU - Xu, Xudong AU - Xu X AD - Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China. FAU - Jiang, Ruhong AU - Jiang R FAU - Chen, Mengmeng AU - Chen M FAU - Dong, Mengmeng AU - Dong M FAU - Liu, Qiang AU - Liu Q FAU - Cheng, Hui AU - Cheng H FAU - Zhou, Kuangshi AU - Zhou K FAU - Chen, Laite AU - Chen L FAU - Li, Miaomiao AU - Li M FAU - Jiang, Chenyang AU - Jiang C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Cardiovasc Pharmacol JT - Journal of cardiovascular pharmacology JID - 7902492 RN - 0 (Cardiovascular Agents) RN - 0 (Isoflavones) RN - 11128-99-7 (Angiotensin II) RN - 9007-34-5 (Collagen) RN - EC 2.7.1.1 (mTOR protein, mouse) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EC 2.7.11.24 (JNK Mitogen-Activated Protein Kinases) RN - Z9W8997416 (puerarin) SB - IM MH - Angiotensin II/*toxicity MH - Animals MH - Autophagy/*drug effects MH - Cardiovascular Agents/*pharmacology MH - Cells, Cultured MH - Collagen/genetics/*metabolism MH - Dose-Response Relationship, Drug MH - Fibroblasts/*drug effects/enzymology/pathology MH - Fibrosis MH - Heart Atria/*drug effects/enzymology/pathology MH - Isoflavones/*pharmacology MH - JNK Mitogen-Activated Protein Kinases/*metabolism MH - Mice MH - Phosphorylation MH - Proto-Oncogene Proteins c-akt/*metabolism MH - Signal Transduction MH - TOR Serine-Threonine Kinases/*metabolism MH - Time Factors EDAT- 2019/06/05 06:00 MHDA- 2020/05/19 06:00 CRDT- 2019/06/05 06:00 PHST- 2019/06/05 06:00 [entrez] PHST- 2019/06/05 06:00 [pubmed] PHST- 2020/05/19 06:00 [medline] AID - 00005344-201906000-00005 [pii] AID - 10.1097/FJC.0000000000000672 [doi] PST - ppublish SO - J Cardiovasc Pharmacol. 2019 Jun;73(6):373-382. doi: 10.1097/FJC.0000000000000672.