並列タイトル等新規アポトーシス関連タンパク質ヌクリングはNF-κBとSTAT3の調節を介して乳腺退縮を制御する
Nucling Regulates Mammary Gland Involution
タイトル（掲載誌）Journal of Biological Chemistry
一般注記Postpartum mammary gland involution is the physiological process by which the lactating gland returns to its pre-pregnant state. In rodent models, the microenvironment of mammary gland involution is sufficient to induce enhanced tumor cell growth, local invasion, and metastasis. Therefore, a deeper understanding of the physiological regulation of involution may provide in-depth information on breast cancer therapy. We herein identified Nucling as an important regulator of involution of the mammary gland. A knock-out mouse model was generated and revealed that postpartum involution were impaired in mice lacking Nucling. Involution is normally associated with an increase in the activation of NF-κB and STAT3, which is required for the organized regulation of involution, and was observed in WT glands, but not in the absence of Nucling. Furthermore, the loss of Nucling led to the suppression of Calpain- 1, IL-6, and C/EBPδ factors, which are known to be essential for normal involution. The number of M2 macrophages, which are crucial for epithelial cell death and adipocyte repopulation after weaning, was also reduced in Nucling-KO glands. Taken together, the results of the present study demonstrated that Nucling played an important role in mammary gland involution by regulating NF-κB and STAT3 signaling pathways.
DOIinfo:doi/10.1074/jbc.M115.673848
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