Article Publish Status: FREE
Abstract Title:

Celastrol Induces Necroptosis and Ameliorates Inflammation via Targeting Biglycan in Human Gastric Carcinoma.

Abstract Source:

Int J Mol Sci. 2019 Nov 14 ;20(22). Epub 2019 Nov 14. PMID: 31739592

Abstract Author(s):

Dandan Guo, Wei Zhang, Haijie Yang, Jiajia Bi, Yunfei Xie, Binfeng Cheng, Yan Wang, Sujuan Chen

Article Affiliation:

Dandan Guo


Celastrol, a triterpene isolated from the root of traditional Chinese medicine, possesses anti-cancer and anti-inflammatory activity to treat rheumatoid disease or as health product. Necroptosis is considered as a new approach to overcome chemotherapeutics resistance. However, whether celastrol exerts necroptosis leading to gastric cancer cell death is still unclear. Here, for the first time we showed that celastrol induced necroptosis in HGC27 and AGS gastric cancer cell lines. More importantly, celastrol down-regulated biglycan (BGN) protein, which is critical for gastric cancer migration and invasion. Furthermore, celastrol activated receptor-interacting protein 1 and 3 (RIP1 and RIP3) and subsequently promoted the translation of mixed-lineage kinase domain-like (MLKL) from cytoplasm to plasma membrane, leading to necroptosis of gastric cancer cell, which was blocked by over-expression BGN. In addition, celastrol suppressed the release of pro-inflammatory cytokines TNF-α and IL-8 in HGC27 and AGS cells, which was reversed by over-expression BGN. Taken together, we identified celastrol as a necroptosis inducer, activated RIP1/RIP3/MLKL pathway and suppressed the level of pro-inflammatory cytokines by down-regulating BGN in HGC-27 and AGS cells, which supported thefeasibility of celastrol in gastric cancer therapy.

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