TY - JOUR
T1 - β-Catenin directly regulates Islet1 expression in cardiovascular progenitors and is required for multiple aspects of cardiogenesis
AU - Lin, Lizhu
AU - Cui, Li
AU - Zhou, Wenlai
AU - Dufort, Daniel
AU - Zhang, Xiaoxue
AU - Cai, Chen Leng
AU - Bu, Lei
AU - Yang, Lei
AU - Martin, Jody
AU - Kemler, Rolf
AU - Rosenfeld, Michael G.
AU - Chen, Ju
AU - Evans, Sylvia M.
PY - 2007/5/29
Y1 - 2007/5/29
N2 - Recent studies have demonstrated that the LIM homeodomain transcription factor Islet1 (Isl1) marks pluripotent cardiovascular progenitor cells and is required for proliferation, survival, and migration of recently defined second heart field progenitors. Factors that are upstream of Isl1 in cardiovascular progenitors have not yet been defined. Here we demonstrate that β-catenin is required for Isl1 expression in cardiac progenitors, directly regulating the Isl1 promoter. Ablation of β-catenin in Isl1-expressing progenitors disrupts multiple aspects of cardiogenesis, resulting in embryonic lethality at E13. β-Catenin is also required upstream of a number of genes required for pharyngeal arch, outflow tract, and/or atrial septal morphogenesis, including Tbx2, Tbx3, Wnt11, Shh, and Pitx2. Our findings demonstrate that β-catenin signaling regulates proliferation and survival of cardiac progenitors.
AB - Recent studies have demonstrated that the LIM homeodomain transcription factor Islet1 (Isl1) marks pluripotent cardiovascular progenitor cells and is required for proliferation, survival, and migration of recently defined second heart field progenitors. Factors that are upstream of Isl1 in cardiovascular progenitors have not yet been defined. Here we demonstrate that β-catenin is required for Isl1 expression in cardiac progenitors, directly regulating the Isl1 promoter. Ablation of β-catenin in Isl1-expressing progenitors disrupts multiple aspects of cardiogenesis, resulting in embryonic lethality at E13. β-Catenin is also required upstream of a number of genes required for pharyngeal arch, outflow tract, and/or atrial septal morphogenesis, including Tbx2, Tbx3, Wnt11, Shh, and Pitx2. Our findings demonstrate that β-catenin signaling regulates proliferation and survival of cardiac progenitors.
KW - Cardiac morphogenesis
KW - Cardiac progenitors
KW - Direct target
KW - Isl1
UR - https://www.scopus.com/pages/publications/34250888462
U2 - 10.1073/pnas.0700923104
DO - 10.1073/pnas.0700923104
M3 - Article
C2 - 17519333
AN - SCOPUS:34250888462
SN - 0027-8424
VL - 104
SP - 9313
EP - 9318
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 22
ER -