Abstract: The disclosure provides materials and methods useful in forming at least one bile duct or treating cholestatic disease or injury by transdifferentiating hepatocytes to cholangiocytes by delivery of an effective amount of an expressible Transforming Growth Factor ? Type I Receptor (TGFBR1), Transforming Growth Factor ? Type II Receptor (TGFBR2), SMAD3, SMAD1, SMAD2, SMAD5 or SMAD8/9, in either in vivo or in vitro environments. Another aspect provides a method of forming at least one bile duct or treating a cholestatic disease or injury by delivering an effective amount of JAG1, JAG2, DLL1, DLL3, DLL4, NOTCH1, NOTCH2, NOTCH3, NOTCH4 or the respective NOTCH intracellular domains either in vivo or in vitro. Also provided are methods for correcting mutant alleles of genes in the TGF? and/or Notch pathways, e.g., JAG1 or NOTCH2, using ZFNs, TALENs, CRISPR or any other genome editing technique.

Abstract: Compositions and methods are described herein for inducing reprogramming of non-pluripotent cells across lineage and differentiation boundaries to generate endodermal progenitor cells and hepatocytes. Compositions and methods for expansion of endodermal progenitor cells without loss of phenotype are also described herein.

Abstract: The present invention relates to in vivo methods of delivering recombinant virions or viral vectors to a subject, including a human diagnosed with or suspected of having liver fibrosis. The disclosure also relates to methods in which recombinant virions, such as AAV virions, are introduced into the myofibroblasts of the liver and to deliver therapeutic nucleic acids, including those nucleic acids necessary to differentiate a myofibroblast into a hepatocyte, thereby not only improving liver function but also reducing collagen deposition and thus liver fibrosis.

Abstract: Compositions and methods are described herein for inducing reprogramming of non-pluripotent cells across lineage and differentiation boundaries to generate endodermal progenitor cells and hepatocytes. Compositions and methods for expansion of endodermal progenitor cells without loss of phenotype are also described herein.

Abstract: Compositions and methods are described herein for inducing reprogramming of non-pluripotent cells across lineage and differentiation boundaries to generate endodermal progenitor cells and hepatocytes. Compositions and methods for expansion of endodermal progenitor cells without loss of phenotype are also described herein.

Abstract: Compositions and methods are described herein for inducing reprogramming of non-pluripotent cells across lineage and differentiation boundaries to generate endodermal progenitor cells and hepatocytes. Compositions and methods for expansion of endodermal progenitor cells without loss of phenotype are also described herein.