期刊
MOLECULAR BIOLOGY REPORTS
卷 49, 期 3, 页码 1895-1902出版社
SPRINGER
DOI: 10.1007/s11033-021-07001-9
关键词
Clonorchis sinensis; Excretory-secretory products; Autophagy; Hepatic stellate cells; Hepatic fibrosis
资金
- Natural Science Foundation of Guangxi [2020GXNSFAA159068, 2019GXNSFAA245069]
- Guangxi First-class Discipline Project for Basic Medicine
- Guangdong Province University Student Innovation and Entrepreneurship Training Programs [S201910570080]
- Guangzhou Medical University Student Science and Technology Innovation Programs [2018A094]
The study revealed that CsESPs can induce autophagy in hepatic stellate cells, thus participating in the pathogenesis of hepatic fibrosis.
Background Clonorchis sinensis was a food-borne zoonotic parasite in the worldwide and also an important risk factor of hepatic fibrosis. Excretory/secretion products of C. sinensis (CsESPs) are involved in parasite-host interactions and contribute to the development of hepatic damage. The aim of the present study was to investigate whether CsESPs and CsTP (adult protein) could induce autophagy of hepatic stellate cells (HSCs) and further activate HSCs so as to participate in the pathogenesis of hepatic fibrosis. Methods and results The human hepatic stellate cell line LX-2 was stimulated by CsESPs and CsTP. CsESPs showed the effect on cell proliferation in methyl thiazolyl tetrazolium (MTT) assay while CsTP failed. Autophagosomes and autolysosomes were observed after the transmission mRFP-EGFP-LC3 plasmid into the LX-2 cells. CsESPs had more powerful to induce the accumulation of autophagosomes and autolysosomes to enhance autophagic flux compared with CsTP. Western-blotting analysis confirmed that the ratio of LC3-II/I in LX-2 cells was up-regulated after CsESPs treatment for 6 h, which further proved that CsESPs could induce autophagy in LX-2 cells. Meanwhile, q-PCR results showed that the mRNA levels of collagen I, collagen III and alpha-SMA decreased in LX-2 cells after treatment with autophagy inhibitor chloroquine, whereas they increased when combination with CsESPs. Conclusions These results suggested that CsESPs-induced autophagy might be involved in the activation of HSCs, and consequently participate in the pathogenesis of hepatic fibrosis caused by C. sinensis infection.
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