例如:"lncRNA", "apoptosis", "WRKY"

A brain-specific homeobox gene, Bsx, is essential for proper postnatal growth and nursing.

Mol. Cell. Biol.2007 Jul;27(14):5120-7. Epub 2007 May 07
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摘要


To investigate in vivo roles of a murine hypothalamic homeobox gene, Bsx, we generated and analyzed two mutant alleles, Bsx(DeltaHD) and Bsx(lacZ). Bsx(DeltaHD) lacks the homeodomain, and Bsx(lacZ) is an insertion of a lacZ reporter gene. Bsx-lacZ expression was detected in the hypothalamus and pineal gland and reiterates Bsx expression. Bsx homozygous mutant mice were born at the expected Mendelian ratio, but their growth was impaired. Offspring from Bsx homozygous mutant females exhibited a low survival rate due to a nursing defect. Mammary glands of the mutant females developed normally during pregnancy; however, they involuted quickly after parturition. These results demonstrate that Bsx is required for postnatal growth and maintenance of lactating mammary glands. Thus, mouse Bsx is likely involved in systemic control of suppression of apoptosis of postpartum mammary epithelial cells.

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