NDLI: Apaf-1 deficiency and neural tube closure defects are found in fog mice

Content Provider	PubMed Central
Author	Honarpour, Narimon Gilbert, Sandra L. Lahn, Bruce T. Wang, Xiaodong Herz, Joachim
Copyright Year	2001
Abstract	The forebrain overgrowth mutation (fog) was originally described as a spontaneous autosomal recessive mutation mapping to mouse chromosome 10 that produces forebrain defects, facial defects, and spina bifida. Although the fog mutant has been characterized and available to investigators for several years, the underlying mutation causing the pathology has not been known. Because of its phenotypic resemblance to apoptotic protease activating factor-1 (Apaf-1) knockout mice, we have investigated the possibility that the fog mutation is in the Apaf-1 gene. Allelic complementation, Western blot analysis, and caspase activation assays indicate that fog mutant mice lack Apaf-1 activity. Northern blot and reverse transcription-PCR analysis show that Apaf-1 mRNA is aberrantly processed, resulting in greatly reduced expression levels of normal Apaf-1 mRNA. These findings are strongly suggestive of the fog mutation being a hypomorphic Apaf-1 defect and implicate neural progenitor cell death in the pathogenesis of spina bifida—a common human congenital malformation. Because a complete deficiency in Apaf-1 usually results in perinatal lethality and fog/fog mice more readily survive into adulthood, these mutants serve as a valuable model with which apoptotic cell death can be studied in vivo.
Related Links	http://dx.doi.org/10.1073/pnas.171283198
Ending Page	9687
Page Count	5
Starting Page	9683
File Format	PDF
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	17
Volume Number	98
Language	English
Publisher	National Academy of Sciences
Publisher Date	2001-08-14
Access Restriction	Open
Rights Holder	National Academy of Sciences
Subject Keyword	General Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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