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Metformin modified chitosan as a multi-functional adjuvant to enhance cisplatin-based tumor chemotherapy efficacy. | LitMetric

Metformin modified chitosan as a multi-functional adjuvant to enhance cisplatin-based tumor chemotherapy efficacy.

Int J Biol Macromol

State Key Laboratory of Ophthalmology, Optometry and Vision Science, School of Ophthalmology and Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325027, China; Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang 325001, China. Electronic address:

Published: January 2023

AI Article Synopsis

Article Abstract

Recently, it was newly revealed that the DNA damage induced by cis‑platinum (Cis-Pt) mediated chemotherapy was significantly impaired by the highly expressed programmed death ligand-1 (PD-L1) in tumor cells. Besides, the efficacy of Cis-Pt was also limited due to its severe side effects, especially enhanced drug efflux induced by multidrug resistance protein 1 (MDR-1) and increased tumor metastasis. Up to now, few drugs or carbohydrates could simultaneously solve these defects of Cis-Pt mediated chemotherapy. Here, we newly found that metformin-modified chitosan (Ch-Met) possessed ideal selective mitochondria accumulation capacity, leading to the further disrupted mitochondrial function, which then effectively inhibited the upregulated PD-L1 expression to inhibit DNA damage repair in tumor cells, as well as impaired drug efflux and lowered tumor metastasis. Therefore, it was demonstrated that Ch-Met could sensitize the chemotherapy efficacy of Cis-Pt.

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Source
http://dx.doi.org/10.1016/j.ijbiomac.2022.10.167DOI Listing

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