کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10934441 | 1093894 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mutations in connexin43 (GJA1) perturb bone growth in zebrafish fins
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیولوژی سلول
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Mechanisms that regulate the size and shape of bony structures are largely unknown. The molecular identification of the fin length mutant short fin (sof), which causes defects in the length of bony fin ray segments, may provide insights regarding the regulation of bone growth. In this report, we demonstrate that the sof phenotype is caused by mutations in the connexin43 (cx43) gene. This conclusion is supported by genetic mapping, reduced expression of cx43 in the original sof allele (sofb123), identification of missense mutations in three ENU-induced alleles, and by demonstration of partially abrogated cx43 function in sofb123 embryos. Expression of cx43 was identified in cells flanking the germinal region of newly growing segments as well as in the osteoblasts at segment boundaries. This pattern of cx43 expression in cells lateral to new segment growth is consistent with a model where cx43-expressing cells represent a biological ruler that measures segment size. This report identifies the first gene identification for a fin length mutation (sof) as well as the first connexin mutations in zebrafish, and therefore reveals a critical role for local cell-cell communication in the regulation of bone size and growth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Developmental Biology - Volume 278, Issue 1, 1 February 2005, Pages 208-219
Journal: Developmental Biology - Volume 278, Issue 1, 1 February 2005, Pages 208-219
نویسندگان
M. Kathryn Iovine, Emmett P. Higgins, Anna Hindes, Brian Coblitz, Stephen L. Johnson,