IL-4 and IL-13 Promote Proliferation of Mammary Epithelial Cells through STAT6 and IRS-1

T helper (Th)2 cytokines such as interleukin (IL)-4 and IL-13 control immune function by acting on leukocytes. They also regulate multiple responses in non-hematopoietic cells. During pregnancy, IL-4 and IL-13 facilitate alveologenesis of mammary glands. This particular morphogenesis generates alveo...

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Main Authors: Wan-Ju Wu, Sue-Hong Wang, Chun-Chi Wu, Yi-An Su, Chin-Yin Chiang, Ching-Hong Lai, Tsung-Hsiang Wang, Tsung-Lin Cheng, Jia-Yu Kuo, Tsai-Ching Hsu, Ting-Hui Lin, Yi-Ju Lee
Format: Article
Language:English
Published: MDPI AG 2021-11-01
Series:International Journal of Molecular Sciences
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Online Access:https://www.mdpi.com/1422-0067/22/21/12008
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author Wan-Ju Wu
Sue-Hong Wang
Chun-Chi Wu
Yi-An Su
Chin-Yin Chiang
Ching-Hong Lai
Tsung-Hsiang Wang
Tsung-Lin Cheng
Jia-Yu Kuo
Tsai-Ching Hsu
Ting-Hui Lin
Yi-Ju Lee
author_facet Wan-Ju Wu
Sue-Hong Wang
Chun-Chi Wu
Yi-An Su
Chin-Yin Chiang
Ching-Hong Lai
Tsung-Hsiang Wang
Tsung-Lin Cheng
Jia-Yu Kuo
Tsai-Ching Hsu
Ting-Hui Lin
Yi-Ju Lee
author_sort Wan-Ju Wu
collection DOAJ
description T helper (Th)2 cytokines such as interleukin (IL)-4 and IL-13 control immune function by acting on leukocytes. They also regulate multiple responses in non-hematopoietic cells. During pregnancy, IL-4 and IL-13 facilitate alveologenesis of mammary glands. This particular morphogenesis generates alveoli from existing ducts and requires substantial cell proliferation. Using 3D cultures of primary mouse mammary epithelial cells, we demonstrate that IL-4 and IL-13 promote cell proliferation, leading to enlargement of mammary acini with partially filled lumens. The mitogenic effects of IL-4 and IL-13 are mediated by STAT6 as inhibition of STAT6 suppresses cell proliferation and improves lumen formation. In addition, IL-4 and IL-13 stimulate tyrosine phosphorylation of insulin receptor substrate-1 (IRS-1). Prolonged treatment with these cytokines leads to increased IRS-1 abundance, which, in turn, amplifies IL-4- and IL-13-stimulated IRS-1 tyrosine phosphorylation. Through signaling crosstalk between IL-4/IL-13 and insulin, a hormone routinely included in mammary cultures, IRS-1 tyrosine phosphorylation is further enhanced. Lowering IRS-1 expression reduces cell proliferation, suggesting that IRS-1 is involved in IL-4- and IL-13-stimulated cell proliferation. Thus, a Th2-dominant cytokine milieu during pregnancy confers mammary gland development by promoting cell proliferation.
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spelling doaj.art-168b256a4ba941b89bd788f7ff90947f2023-11-22T21:01:22ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-11-0122211200810.3390/ijms222112008IL-4 and IL-13 Promote Proliferation of Mammary Epithelial Cells through STAT6 and IRS-1Wan-Ju Wu0Sue-Hong Wang1Chun-Chi Wu2Yi-An Su3Chin-Yin Chiang4Ching-Hong Lai5Tsung-Hsiang Wang6Tsung-Lin Cheng7Jia-Yu Kuo8Tsai-Ching Hsu9Ting-Hui Lin10Yi-Ju Lee11Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua 500, TaiwanDepartment of Biomedical Sciences, Chung Shan Medical University, Taichung 402, TaiwanInstitute of Medicine, Chung Shan Medical University, Taichung 402, TaiwanInstitute of Medicine, Chung Shan Medical University, Taichung 402, TaiwanInstitute of Medicine, Chung Shan Medical University, Taichung 402, TaiwanInstitute of Medicine, Chung Shan Medical University, Taichung 402, TaiwanInstitute of Medicine, Chung Shan Medical University, Taichung 402, TaiwanInstitute of Medicine, Chung Shan Medical University, Taichung 402, TaiwanInstitute of Medicine, Chung Shan Medical University, Taichung 402, TaiwanInstitute of Medicine, Chung Shan Medical University, Taichung 402, TaiwanDepartment of Biomedical Sciences, Chung Shan Medical University, Taichung 402, TaiwanInstitute of Medicine, Chung Shan Medical University, Taichung 402, TaiwanT helper (Th)2 cytokines such as interleukin (IL)-4 and IL-13 control immune function by acting on leukocytes. They also regulate multiple responses in non-hematopoietic cells. During pregnancy, IL-4 and IL-13 facilitate alveologenesis of mammary glands. This particular morphogenesis generates alveoli from existing ducts and requires substantial cell proliferation. Using 3D cultures of primary mouse mammary epithelial cells, we demonstrate that IL-4 and IL-13 promote cell proliferation, leading to enlargement of mammary acini with partially filled lumens. The mitogenic effects of IL-4 and IL-13 are mediated by STAT6 as inhibition of STAT6 suppresses cell proliferation and improves lumen formation. In addition, IL-4 and IL-13 stimulate tyrosine phosphorylation of insulin receptor substrate-1 (IRS-1). Prolonged treatment with these cytokines leads to increased IRS-1 abundance, which, in turn, amplifies IL-4- and IL-13-stimulated IRS-1 tyrosine phosphorylation. Through signaling crosstalk between IL-4/IL-13 and insulin, a hormone routinely included in mammary cultures, IRS-1 tyrosine phosphorylation is further enhanced. Lowering IRS-1 expression reduces cell proliferation, suggesting that IRS-1 is involved in IL-4- and IL-13-stimulated cell proliferation. Thus, a Th2-dominant cytokine milieu during pregnancy confers mammary gland development by promoting cell proliferation.https://www.mdpi.com/1422-0067/22/21/12008IL-4IL-13mammary glandscell proliferationSTAT6IRS protein
spellingShingle Wan-Ju Wu
Sue-Hong Wang
Chun-Chi Wu
Yi-An Su
Chin-Yin Chiang
Ching-Hong Lai
Tsung-Hsiang Wang
Tsung-Lin Cheng
Jia-Yu Kuo
Tsai-Ching Hsu
Ting-Hui Lin
Yi-Ju Lee
IL-4 and IL-13 Promote Proliferation of Mammary Epithelial Cells through STAT6 and IRS-1
International Journal of Molecular Sciences
IL-4
IL-13
mammary glands
cell proliferation
STAT6
IRS protein
title IL-4 and IL-13 Promote Proliferation of Mammary Epithelial Cells through STAT6 and IRS-1
title_full IL-4 and IL-13 Promote Proliferation of Mammary Epithelial Cells through STAT6 and IRS-1
title_fullStr IL-4 and IL-13 Promote Proliferation of Mammary Epithelial Cells through STAT6 and IRS-1
title_full_unstemmed IL-4 and IL-13 Promote Proliferation of Mammary Epithelial Cells through STAT6 and IRS-1
title_short IL-4 and IL-13 Promote Proliferation of Mammary Epithelial Cells through STAT6 and IRS-1
title_sort il 4 and il 13 promote proliferation of mammary epithelial cells through stat6 and irs 1
topic IL-4
IL-13
mammary glands
cell proliferation
STAT6
IRS protein
url https://www.mdpi.com/1422-0067/22/21/12008
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