Heparanase-1 is upregulated by hepatitis C virus and favors its replication - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Hepatology Année : 2022

Heparanase-1 is upregulated by hepatitis C virus and favors its replication

Résumé

Background & Aims: Over time, chronic HCV infection can lead to hepatocellular carcinoma (HCC), a process that involves changes to the liver extracellular matrix (ECM). However, the exact mechanisms by which HCV induces HCC remain unclear. Therefore, we sought to investigate the impact of HCV on the liver ECM, with a focus on heparanase-1 (HPSE). Methods: HPSE expression was assessed by quantitative reverse-transcription PCR, immunoblotting and immunofluorescence in liver biopsies infected or not with HCV, and in 10-day-infected hepatoma Huh7.5 cells. Cell lines deficient for or overexpressing HPSE were established to study its role during infection. Results: HCV propagation led to significant HPSE induction, in vivo and in vitro. HPSE enhanced infection when exogenously expressed or supplemented as a recombinant protein. Conversely, when HPSE expression was downregulated or its activity blocked, HCV infection dropped, suggesting a role of HPSE in the HCV life cycle. We further studied the underlying mechanisms of such observations and found that HPSE favored HCV release by enhancing CD63 synthesis and exosome secretion, but not by stimulating HCV entry or genome replication. We also showed that virus-induced oxidative stress was involved in HPSE induction, most likely through NF-κB activation. Conclusions: We report for the first time that HCV infection is favored by HPSE, and upregulates HPSE expression and secretion, which may result in pathogenic alterations of the ECM. Lay summary: Chronic hepatitis C virus (HCV) infection can lead to hepatocellular carcinoma development in a process that involves derangement of the extracellular matrix (ECM). Herein, we show that heparanase-1, a protein involved in ECM degradation and remodeling, favors HCV infection and is upregulated by HCV infection; this upregulation may result in pathogenic alterations of the ECM.
Fichier principal
Vignette du fichier
JHEPATOL_corrected_proof.pdf (2.03 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03608032 , version 1 (14-03-2022)

Identifiants

Citer

Christophe Gallard, Nadjet Lebsir, Hira Khursheed, Emma Reungoat, Marie-Laure Plissonnier, et al.. Heparanase-1 is upregulated by hepatitis C virus and favors its replication. Journal of Hepatology, 2022, ⟨10.1016/j.jhep.2022.01.008⟩. ⟨hal-03608032⟩
84 Consultations
92 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More