PMID- 36341817 OWN - NLM STAT- MEDLINE DCOM- 20221201 LR - 20221201 IS - 1872-7573 (Electronic) IS - 0378-8741 (Linking) VI - 302 IP - Pt A DP - 2023 Feb 10 TI - Anti-apoptotic effect of HeidihuangWan in renal tubular epithelial cells via PI3K/Akt/mTOR signaling pathway. PG - 115882 LID - S0378-8741(22)00921-7 [pii] LID - 10.1016/j.jep.2022.115882 [doi] AB - ETHNOPHARMACOLOGICAL RELEVANCE: Heidihuang Wan (HDHW) is a classic Chinese herbal formula, which was first recorded in the "Suwen Bingji Qiyi Baoming Collection" written by Liu Wansu during the Jin Dynasty (1115-1234 AD). It is commonly used clinically for the treatment of kidney diseases and its curative effect is stable. Previous animal experiments have confirmed that HDHW can effectively improve renal fibrosis. However, the underlying pharmacological mechanism remains unclear. AIMS OF THIS STUDY: Renal tubular epithelial cell (RTEC) apoptosis is one of the main pathological features of renal fibrosis. This study aimed to observe the effect and underlying mechanism of HDHW on the apoptosis of RTECs to further explore the pathological mechanism of HDHW against renal fibrosis. MATERIALS AND METHODS: We examined the HDHW composition in rat serum. In vitro, we first screened out the optimal intervention concentration of HDHW on RTECs using the MTT assay. Hypoxia/reoxygenation was then used to induce apoptosis of RTECs (H/R-RTECs), which were divided into H/R-RTEC, astragaloside IV (positive control), HDHW, and RTECs groups. After 48 h of drug intervention, apoptosis of RTECs was detected using flow cytometry and protein expression was detected by western blotting. The 5/6 nephrectomy rat model was constructed and divided into the normal control, 5/6 nephrectomy, HDHW, and astragaloside IV groups. After 8 weeks of treatment, TUNEL staining was used to detect cell apoptosis, and western blotting was used to detect protein expression. RESULTS: HDHW downregulated the expression of pro-apoptotic proteins Bax and Caspase3, up-regulated the expression of anti-apoptotic protein Bcl-2, activated the PI3K/Akt/mTOR signaling pathway, and reversed the early apoptosis of RTECs, thereby resisting the apoptosis of RTECs. CONCLUSION: HDHW inhibits apoptosis of RTECs by modulating the PI3K/Akt/mTOR signaling pathway. This study provides experimental evidence for the anti-fibrotic effect of HDHW on the kidneys and partially elucidates its pharmacological mechanism of action. CI - Copyright (c) 2022 Elsevier B.V. All rights reserved. FAU - Li, Ying-Ying AU - Li YY AD - College of First Clinical Medical, Shandong University of Traditional Chinese Medicine, Jinan, China. FAU - Tian, Zeng-Hui AU - Tian ZH AD - College of First Clinical Medical, Shandong University of Traditional Chinese Medicine, Jinan, China. FAU - Su, Shan-Shan AU - Su SS AD - Department of Nephrology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China. FAU - Shi, Jing-Jing AU - Shi JJ AD - College of First Clinical Medical, Shandong University of Traditional Chinese Medicine, Jinan, China. FAU - Zhou, Chao AU - Zhou C AD - Department of Oncology, Weifang Hospital of Traditional Chinese Medicine, Weifang, China. FAU - Zhang, Li-Hua AU - Zhang LH AD - Department of Geriatrics, Weifang Hospital of Traditional Chinese Medicine, Weifang, China. FAU - Zhang, Fa-Rong AU - Zhang FR AD - Department of Nephrology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China. Electronic address: 71000162@sdutcm.edu.cn. FAU - Hao, Yan-Ke AU - Hao YK AD - Department of Spine Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China. Electronic address: 71000331@sdutcm.edu.cn. LA - eng PT - Journal Article DEP - 20221029 PL - Ireland TA - J Ethnopharmacol JT - Journal of ethnopharmacology JID - 7903310 RN - 3A592W8XKE (astragaloside A) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.1.- (Phosphatidylinositol 3-Kinases) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - 0 (Apoptosis Regulatory Proteins) RN - EC 2.7.1.1 (mTOR protein, rat) SB - IM MH - Rats MH - Animals MH - *Proto-Oncogene Proteins c-akt/metabolism MH - Phosphatidylinositol 3-Kinases/metabolism MH - Signal Transduction MH - TOR Serine-Threonine Kinases/metabolism MH - Apoptosis MH - Epithelial Cells MH - Apoptosis Regulatory Proteins/metabolism MH - *Kidney Diseases/pathology MH - Fibrosis OTO - NOTNLM OT - Apoptosis OT - HeidihuangWan OT - PI3K/Akt/mTOR signaling pathway OT - Renal tubular epithelial cells COIS- Declaration of competing interest The authors declare no con fl icts of interest. EDAT- 2022/11/08 06:00 MHDA- 2022/12/02 06:00 CRDT- 2022/11/07 06:17 PHST- 2022/09/04 00:00 [received] PHST- 2022/10/23 00:00 [revised] PHST- 2022/10/25 00:00 [accepted] PHST- 2022/11/08 06:00 [pubmed] PHST- 2022/12/02 06:00 [medline] PHST- 2022/11/07 06:17 [entrez] AID - S0378-8741(22)00921-7 [pii] AID - 10.1016/j.jep.2022.115882 [doi] PST - ppublish SO - J Ethnopharmacol. 2023 Feb 10;302(Pt A):115882. doi: 10.1016/j.jep.2022.115882. Epub 2022 Oct 29.