Developmental and genetic aspects of congenital heart disease.
Congenital heart defects (CHDs) are the result of abnormal cardiac mesoderm or cardiac neural crest development. The molecular cause of most congenital heart disease remains unknown, although numerous cardiac regulatory factors have recently been described. dHAND and eHAND are basic helix-loop-helix transcription factors expressed differentially in the right and left ventricles, respectively, and in the cardiac neural crest. Mice lacking dHAND have a hypoplastic right ventricle and abnormal development of vessels arising from the heart and cell death of craniofacial precursors. By searching for dHAND-dependent genes, a gene likely responsible for the cardiac and craniofacial defects associated with chromosome 22q11 deletion has been identified. A systematic dissection of molecular pathways involved in cardiogenesis should allow for further identification of genes responsible for CHD.
Srivastava
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Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas 75235-9148, USA. dsriva@mednet.swmed.edu
D033942:Adaptor Proteins, Vesicular Transport; D000818:Animals; D051792:Basic Helix-Loop-Helix Proteins; D002872:Chromosome Deletion; D002892:Chromosomes, Human, Pair 22 / Q000235:genetics; D004268:DNA-Binding Proteins / Q000235:genetics; D018507:Gene Expression Regulation, Developmental; D006330:Heart Defects, Congenital / Q000235:genetics* / Q000473:pathology; D006801:Humans; D047908:Intracellular Signaling Peptides and Proteins; D011506:Proteins / Q000235:genetics; D014157:Transcription Factors / Q000235:genetics; D029961:Zebrafish Proteins
D033942:Adaptor Proteins, Vesicular Transport; D051792:Basic Helix-Loop-Helix Proteins; D004268:DNA-Binding Proteins; D047908:Intracellular Signaling Peptides and Proteins; D011506:Proteins; D014157:Transcription Factors; D029961:Zebrafish Proteins; C498765:HAND2 protein, human; C491497:UFD1 protein, human; C410915:hand2 protein, zebrafish; C097341:helix-loop-helix protein, eHAND