Abstract
Background: Primary sclerosing cholangitis (PSC) is a chronic cholestatic liver disease characterized by inflammatory fibrosis usually involving the whole biliary tree. However, there are very limited treatment options to treat this disease. Our previous study found a lipid-protein rCsHscB from a liver fluke - Clonorchis sinensis, which had full capacities of immune regulation. Therefore, we investigated the role of rCsHscB in a mouse model of sclerosing cholangitis induced by xenobiotic 3,5- diethoxycarbonyl-1,4-dihydrocollidine (DDC) to explore whether this protein had potential therapeutic value for PSC.
Methods: Mice were fed 0.1% DDC for 4 weeks and treated with CsHscB (30 μg/mouse, intraperitoneal injection, once every 3 days); the control group was given an equal amount of PBS or CsHscB under normal diet conditions. All the mice were sacrificed at 4 weeks for the evaluation of biliary proliferation, fibrosis, and inflammation.
Results: rCsHscB treatment attenuated DDC-induced liver congestion and enlargement and significantly decreased the upregulation of serum AST and ALT levels. The administration of rCsHscB to DDC-fed mice significantly decreased cholangiocyte proliferation and pro-inflammatory cytokine production compared to mice fed with DDC alone. Also, rCsHscB treatment showed a decreased expression of α-SMA in the liver and other markers of liver fibrosis (Masson staining, Hydroxyproline content, and collagen deposit). More interestingly, DDC-fed mice treated with rCsHscB showed a significant up-regulation of PPAR-γ expression, which was similar to control mice, indicating the involvement of PPAR-γ signaling in the protective action of rCsHscB.
Conclusion: Overall, our data show that rCsHscB attenuates the progression of cholestatic fibrosis induced by DDC and supports the potential for manipulating the parasite-derived molecule to treat certain immune-mediated disorders.
[http://dx.doi.org/10.1016/S0140-6736(18)30300-3] [PMID: 29452711]
[http://dx.doi.org/10.1073/pnas.1400062111] [PMID: 25074909]
[http://dx.doi.org/10.2353/ajpath.2007.061133] [PMID: 17600122]
[http://dx.doi.org/10.1016/j.bbadis.2017.06.027] [PMID: 28709963]
[http://dx.doi.org/10.4049/jimmunol.1202502] [PMID: 24532574]
[http://dx.doi.org/10.2147/ITT.S61528] [PMID: 27471720]
[http://dx.doi.org/10.1053/j.gastro.2005.01.005] [PMID: 15825065]
[http://dx.doi.org/10.1111/apt.12366] [PMID: 23730956]
[http://dx.doi.org/10.1097/MD.0000000000012087] [PMID: 30142867]
[http://dx.doi.org/10.1136/gut.2005.079129] [PMID: 16344586]
[http://dx.doi.org/10.1186/s12865-015-0074-3] [PMID: 25884706]
[http://dx.doi.org/10.3390/life11020101] [PMID: 33572978]
[http://dx.doi.org/10.1128/CMR.05040-11] [PMID: 23034321]
[http://dx.doi.org/10.7150/thno.20359] [PMID: 28912887]
[http://dx.doi.org/10.1016/j.actatropica.2016.11.016] [PMID: 27871775]
[http://dx.doi.org/10.1371/journal.pone.0171005] [PMID: 28151995]
[http://dx.doi.org/10.1371/journal.pntd.0008643] [PMID: 33044969]
[http://dx.doi.org/10.1016/j.humpath.2009.07.006] [PMID: 19762066]
[http://dx.doi.org/10.3390/cells10051107] [PMID: 34062960]
[http://dx.doi.org/10.1016/j.bbadis.2018.07.025] [PMID: 30398152]
[http://dx.doi.org/10.1177/0960327115627689] [PMID: 26811344]
[http://dx.doi.org/10.1038/labinvest.2010.61] [PMID: 20368698]
[http://dx.doi.org/10.1016/j.jhep.2019.04.012] [PMID: 31071368]
[http://dx.doi.org/10.3390/cells8111419] [PMID: 31718044]
[http://dx.doi.org/10.1155/2017/2670658] [PMID: 28691020]
[http://dx.doi.org/10.1016/S0168-8278(99)80010-5] [PMID: 9927153]
[http://dx.doi.org/10.1053/j.gastro.2020.01.027] [PMID: 31982409]
[http://dx.doi.org/10.1074/jbc.M310284200] [PMID: 14702344]
[http://dx.doi.org/10.1007/s00018-012-1046-x] [PMID: 22699820]
[http://dx.doi.org/10.1016/j.cellsig.2011.11.008] [PMID: 22108088]
[PMID: 30575926]
[http://dx.doi.org/10.1074/jbc.M006577200] [PMID: 10969082]
[http://dx.doi.org/10.1016/j.bbrc.2006.09.069] [PMID: 17010940]
[http://dx.doi.org/10.1096/fj.04-2753fje] [PMID: 15876570]
[http://dx.doi.org/10.2147/DDDT.S310163] [PMID: 34168433]
[http://dx.doi.org/10.1111/jcmm.15028] [PMID: 32031298]
[http://dx.doi.org/10.4062/biomolther.2017.173] [PMID: 29081092]