Mammary alveolar epithelial cells convert to brown adipocytes in post-lactating mice.

Mammary alveolar epithelial cells convert to brown adipocytes in post-lactating mice.
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DOI:
10.1002/jcp.25858
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发表时间:
2017-11
影响因子:
5.6
通讯作者:
Cinti S
Cinti S
中科院分区:
生物学2区
文献类型:
--
作者:
Giordano A;Perugini J;Kristensen DM;Sartini L;Frontini A;Kajimura S;Kristiansen K;Cinti S

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During pregnancy and lactation, subcutaneous white adipocytes in the mouse mammary gland transdifferentiate reversibly to milk-secreting epithelial cells. In this study, we demonstrate by transmission electron microscopy that in the post-lactating mammary gland interscapular multilocular adipocytes found close to the mammary alveoli contain milk protein granules. Use of the Cre-loxP recombination system allowed showing that the involuting mammary gland of whey acidic protein-Cre/R26R mice, whose secretory alveolar cells express the lacZ gene during pregnancy, contains some X-Gal-stained and uncoupling protein 1–positive interscapular multilocular adipocytes. These data suggest that during mammary gland involution some milk-secreting epithelial cells in the anterior subcutaneous depot may transdifferentiate to brown adipocytes, highlighting a hitherto unappreciated feature of mouse adipose organ plasticity.
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