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Mol. Cells 2001; 12(3): 368-371

Published online January 1, 1970

© The Korean Society for Molecular and Cellular Biology

The Expression of Bok Is Regulated by Serum in HC11 Mammary Epithelial Cells

Seck-Ho Ha, Sul-Ra Lee, Tae-Hoon Lee, Young-Min Kim, Myung-Gi Baik, Yun-Jaie Choi

Abstract

Epithelial cells within the mammary gland undergo apoptosis during weaning. To determine the expression of Bok mRNA (a member of the pro-apoptotic Bcl-2 family) in the mammary gland and its regulation, we examined the expression of the Bok transcript in the mouse mammary gland and HC11 mammary epithe-lial cells in culture through RT-PCR. The Bok mRNA expression was found in the mammary gland. The ex-pression of the Bok mRNA level was induced through serum starvation and overexpression of Bok induced apoptosis in HC11 cells in culture. These results indi-cate that the expression of Bok mRNA in the mam-mary gland is regulated through serum starvation. It also may be related to the mammary involution.

Keywords Bok, Ser, Apoptosis, HC11 Mammary Epithelial Cells

Article

Research Article

Mol. Cells 2001; 12(3): 368-371

Published online December 31, 2001

Copyright © The Korean Society for Molecular and Cellular Biology.

The Expression of Bok Is Regulated by Serum in HC11 Mammary Epithelial Cells

Seck-Ho Ha, Sul-Ra Lee, Tae-Hoon Lee, Young-Min Kim, Myung-Gi Baik, Yun-Jaie Choi

Abstract

Epithelial cells within the mammary gland undergo apoptosis during weaning. To determine the expression of Bok mRNA (a member of the pro-apoptotic Bcl-2 family) in the mammary gland and its regulation, we examined the expression of the Bok transcript in the mouse mammary gland and HC11 mammary epithe-lial cells in culture through RT-PCR. The Bok mRNA expression was found in the mammary gland. The ex-pression of the Bok mRNA level was induced through serum starvation and overexpression of Bok induced apoptosis in HC11 cells in culture. These results indi-cate that the expression of Bok mRNA in the mam-mary gland is regulated through serum starvation. It also may be related to the mammary involution.

Keywords: Bok, Ser, Apoptosis, HC11 Mammary Epithelial Cells

Mol. Cells
Sep 30, 2023 Vol.46 No.9, pp. 527~572
COVER PICTURE
Chronic obstructive pulmonary disease (COPD) is marked by airspace enlargement (emphysema) and small airway fibrosis, leading to airflow obstruction and eventual respiratory failure. Shown is a microphotograph of hematoxylin and eosin (H&E)-stained histological sections of the enlarged alveoli as an indicator of emphysema. Piao et al. (pp. 558-572) demonstrate that recombinant human hyaluronan and proteoglycan link protein 1 (rhHAPLN1) significantly reduces the extended airspaces of the emphysematous alveoli by increasing the levels of TGF-β receptor I and SIRT1/6, as a previously unrecognized mechanism in human alveolar epithelial cells, and consequently mitigates COPD.

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