Biological functions of lysosomal hydrolases during liver fibrosis
Name(Family, MEROPS ID) | Biological process modulated during liver fibrosis | ||||
---|---|---|---|---|---|
Apoptosis | HSC activation | Autophagy | Inflammation | ECM remodeling | |
Cathepsin A(Ser, S10.002) | Degradation of LAMP2a restricting chaperone-mediated autophagy in vitro [48] | ||||
Cathepsin B(Cys, C01.060) | Proteolytic processing of members of the Bcl-2 family in hepatocytes [24] | Modulation of pAkt in HSC after PDGF stimulation contributing to their proliferative and migratory capacity [30] | Cytosolic cathepsin B, released by autophagic flux, triggers activation of NLRP3 in HSC contributing its activation [36] | Participation in the cytotoxic response mediated by TRAIL in NK/NKT cells by an unknown mechanism [39] | Collagenolytic activity by an unknown mechanism [43, 44] |
Proteolysis of PDGF receptor-β contributing to PDGF-BB desensitization in HSC [31] | Modulation NF-κB dependent inflammation in HSC via sirtuin-1 regulation [40] | ||||
Cathepsin D(Asp, A01.009) | Proteolytic cleavage of Bid into t-Bid, upstream mitochondria, triggered by TNF-α in hepatocytes [46] | Paracrine activation of cathepsin B in HSC contributing its activation [30] | Correlation of cathepsin D and autophagy during DR in cirrhosis by an unknown mechanism [47] | ||
Cathepsin F(Cys, C01.018) | Transcriptional regulation of markers of HSC activation by an unknown mechanism [35] | ||||
Cathepsin H(Cys, C01.040) | Modulation of metalloproteinases gene expression in HSC via stabilization of class Iia histone deacetylases [34] | ||||
Cathepsin L(Cys, C01.032) | Collagenolytic activity by an unknown mechanism [44] | ||||
Cathepsin S(Cys, C01.034) | Modulation of NF-κB dependent inflammation in HSC via sirtuin-1 regulation [40] | ||||
Processing of CD74 contributing to antigen presentation in HSC [41] |
pAkt: phosphorylated Akt; -: not applicable
We would like to sincerely acknowledge all the authors, cited or not, whose work has contributed to the advancement of the research field.
MFF: Writing—original draft. PRB: Writing—original draft. JCP: Writing—original draft. AM: Writing—original draft, Conceptualization, Visualization, Supervision, Funding acquisition, Resources, Project administration, Writing—review & editing.
The authors declare that they have no conflicts of interest.
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AM’s research is supported by grants [RTI2018-097475-A-100] and [PID2021-123652OB-I00] funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”, by the “European Union”. Both MFF and PRB salaries were supported by FPU fellowships ([FPU20/01367] and [FPU19/05357], respectively) awarded by the Ministry of Universities, Spain. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
© The Author(s) 2023.