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Research Article Free access | 10.1172/JCI119593

A novel pathogenesis of megacolon in Ncx/Hox11L.1 deficient mice.

M Hatano, T Aoki, M Dezawa, S Yusa, Y Iitsuka, H Koseki, M Taniguchi, and T Tokuhisa

Division of Developmental Genetics, Chiba University School of Medicine, Chiba 260, Japan. hatano@med.m.chiba-u.ac.jp

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Division of Developmental Genetics, Chiba University School of Medicine, Chiba 260, Japan. hatano@med.m.chiba-u.ac.jp

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Division of Developmental Genetics, Chiba University School of Medicine, Chiba 260, Japan. hatano@med.m.chiba-u.ac.jp

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Division of Developmental Genetics, Chiba University School of Medicine, Chiba 260, Japan. hatano@med.m.chiba-u.ac.jp

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Division of Developmental Genetics, Chiba University School of Medicine, Chiba 260, Japan. hatano@med.m.chiba-u.ac.jp

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Division of Developmental Genetics, Chiba University School of Medicine, Chiba 260, Japan. hatano@med.m.chiba-u.ac.jp

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Division of Developmental Genetics, Chiba University School of Medicine, Chiba 260, Japan. hatano@med.m.chiba-u.ac.jp

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Division of Developmental Genetics, Chiba University School of Medicine, Chiba 260, Japan. hatano@med.m.chiba-u.ac.jp

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Published August 15, 1997 - More info

Published in Volume 100, Issue 4 on August 15, 1997
J Clin Invest. 1997;100(4):795–801. https://doi.org/10.1172/JCI119593.
© 1997 The American Society for Clinical Investigation
Published August 15, 1997 - Version history
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Abstract

The Ncx/Hox11L.1 gene, a member of the Hox11 homeobox gene family, is mainly expressed in neural crest-derived tissues. To elucidate the role of Ncx/Hox11L.1, the gene has been inactivated in embryonic stem cells by homologous recombination. The homozygous mutant mice were viable. These mice developed megacolon with enteric ganglia by age 3-5 wk. Histochemical analysis of the ganglia revealed that the enteric neurons hyperinnervated in the narrow segment of megacolon. Some of these neuronal cells degenerated and neuronal cell death occurred in later stages. We propose that Ncx/Hox11L.1 is required for maintenance of proper functions of the enteric nervous system. These mutant mice can be used to elucidate a novel pathogenesis for human neuronal intestinal dysplasia.

Version history
  • Version 1 (August 15, 1997): No description

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