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Abstract Title:

Protective Role of Fucoidan on Cisplatin-mediated ER Stress in Renal Proximal Tubule Epithelial Cells.

Abstract Source:

Anticancer Res. 2019 Oct ;39(10):5515-5524. PMID: 31570445

Abstract Author(s):

Hyung Joo Kim, Yeo Min Yoon, Jun Hee Lee, Sang Hun Lee

Article Affiliation:

Hyung Joo Kim

Abstract:

BACKGROUND/AIM: Administration of cisplatin in cancer patients is limited by the kidney-related adverse effects; however, a protective strategy is absent. We hypothesized that fucoidan protects the proximal tubule epithelial (TH-1) cells against the effects of cisplatin.

MATERIALS AND METHODS: To assess the effect of fucoidan, its effect on reactive oxygen species (ROS) formation, endoplasmic reticulum (ER) stress response, DNA damage response (DDR), apoptosis, and cell-cycle arrest in TH-1 cells was investigated.

RESULTS: Cisplatin increased the accumulation of ROS, leading to excessive ER stress. In presence of cisplatin, treatment of TH-1 cells with fucoidan significantly reduced the ER stress by maintaining the complex of GRP78 with PERK and IRE1α. In particular, fucoidan enhanced the antioxidative capacity through up-regulation of PrPFurthermore, fucoidan suppressed cisplatin-induced apoptosis and cell-cycle arrest, whereas silencing of PRNP blocked these effects of fucoidan.

CONCLUSION: Fucoidan may be a potential adjuvant therapy for cancer patients treated with cisplatin as it preserves renal functionality.

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