Activation of Rac1 promotes hedgehog‐mediated acquisition of the myofibroblastic phenotype in rat and human hepatic stellate cells
Steve S. Choi, Rafal P. Witek, Liu Yang, Alessia Omenetti, Wing‐Kin Syn, Cynthia A. Moylan, Youngmi Jung, Gamze F. Karaca, Vanessa S. Teaberry, Thiago A. Pereira, Jiangbo Wang, Xiu‐Rong Ren, Anna Mae Diehl – 23 June 2010 – Hepatic accumulation of myofibroblastic hepatic stellate cells (MF‐HSCs) is pivotal in the pathogenesis of cirrhosis. Two events are necessary for MF‐HSCs to accumulate in damaged livers: transition of resident, quiescent hepatic stellate cells (Q‐HSCs) to MF‐HSCs and expansion of MF‐HSC numbers through increased proliferation and/or reduced apoptosis.