Pegylated interferon-α2b and ribavirin decrease claudin-1 and E-cadherin expression in HepG2 and Huh-7.5 cells
Rendón Huerta, Erika P. y Torres Martínez, Ana y Charles Niño, Claudia y Rivas Estilla, Ana María y Páez, A. y Fortoul, Teresa I. y Montaño, Luis F. (2013) Pegylated interferon-α2b and ribavirin decrease claudin-1 and E-cadherin expression in HepG2 and Huh-7.5 cells. Annals of hepatology, 12 (4). pp. 448-457. ISSN 1665-2681
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Resumen
Background. Hepatitis C virus (HCV) infection usually results in long-term viremia. Entry of HCV into the he-patocyte requires claudin-1, -6, -9 and occludin. The efficacy of Pegylated interferon-α (PEG-IFN) treatment against HCV infection increased when ribavirin (RBV) was added to the therapeutic scheme. Our aim was to investigate if PEG-IFN plus RBV regulate claudin expression.Material and methods. HepG2, Huh-7 and Huh-7.5 cells were treated with PEG-IFN-α2a or α2b and/or RBV at different times before obtaining the cytosolic, membrane and cytoskeletal fractions. Claudin-1, 3, 4, 6, and 9, E-cadherin and occludin expression was evaluated by Western blot analysis. Transepithelial electrical resistance (TER) was also determined.Results. Claudin-1, 3, 4, 6, E-cadherin and occludin are constitutively expressed mainly in HepG2 cell membrane. Claudin-1 and E-cadherin cell membrane expression diminished after exposure to PEGIFNα2b (50 ng) + RBV(50 μg); the maximal decrease was observed with 200 ng of PEG-IFNα2b + 200 μg of RBV. The effect was less intense with PEG-IFNα2a. The inhibition of claudin-1 and E-cadherin expression in Huh-7 and Huh-7.5 cells was only observed with 200 ng of PEG-IFNα2b + 200 μg of RBV. TER diminished marginally in the HCV containing hepatoma cells with 200 ng of PEG-IFNα2b + 200 ug of RBV. Claudin-1 mRNA expression level was not affected by the combined treatment.Conclusion. The increased therapeutic efficacy of the PEG-IFNα2b plus RBV treatment could be secondary to the inhibition of claudin-1 and E-cadherin cell membrane expression.
Tipo de elemento: | Article | ||||||||||||||||||||||||
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Palabras claves no controlados: | Proteínas de unión estrecha, virus de la hepatitis C, Claudins | ||||||||||||||||||||||||
Materias: | R Medicina > RC Medicina Interna, Psiquiatría, Neurología | ||||||||||||||||||||||||
Divisiones: | Medicina | ||||||||||||||||||||||||
Usuario depositante: | Editor Repositorio | ||||||||||||||||||||||||
Creadores: |
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Fecha del depósito: | 29 Jun 2022 20:22 | ||||||||||||||||||||||||
Última modificación: | 18 Mayo 2023 18:51 | ||||||||||||||||||||||||
URI: | http://eprints.uanl.mx/id/eprint/23504 |
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