HOXA5 Expression Is Elevated in Breast Cancer and Is Transcriptionally Regulated by Estradiol
HOXA5 is a homeobox-containing gene associated with the development of the lung, gastrointestinal tract, and vertebrae. Here, we investigate potential roles and the gene regulatory mechanism in HOXA5 in breast cancer cells. Our studies demonstrate that HOXA5 expression is elevated in breast cancer t...
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doaj-b9d54136e1b64b4292b1e464684dda9c2020-12-15T06:54:15ZengFrontiers Media S.A.Frontiers in Genetics1664-80212020-12-011110.3389/fgene.2020.592436592436HOXA5 Expression Is Elevated in Breast Cancer and Is Transcriptionally Regulated by EstradiolImran Hussain0Paromita Deb1Avisankar Chini2Monira Obaid3Arunoday Bhan4Khairul I. Ansari5Bibhu P. Mishra6Samara A. Bobzean7S. M. Nashir Udden8Prasanna G. Alluri9Hriday K. Das10Robert Matthew Brothers11Linda I. Perrotti12Subhrangsu S. Mandal13Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, United StatesDepartment of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, United StatesDepartment of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, United StatesDepartment of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, United StatesDepartment of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, United StatesDepartment of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, United StatesDepartment of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, United StatesDepartment of Psychology, The University of Texas at Arlington, Arlington, TX, United StatesDepartment of Radiation Oncology, The University of Texas Southwestern Medical Center, Dallas, TX, United StatesDepartment of Radiation Oncology, The University of Texas Southwestern Medical Center, Dallas, TX, United StatesDepartment of Pharmacology and Neuroscience, University of North Texas Health Science Center, Institute for Healthy Aging, Fort Worth, TX, United StatesDepartment of Kinesiology, The University of Texas at Arlington, Arlington, TX, United StatesDepartment of Psychology, The University of Texas at Arlington, Arlington, TX, United StatesDepartment of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, United StatesHOXA5 is a homeobox-containing gene associated with the development of the lung, gastrointestinal tract, and vertebrae. Here, we investigate potential roles and the gene regulatory mechanism in HOXA5 in breast cancer cells. Our studies demonstrate that HOXA5 expression is elevated in breast cancer tissues and in estrogen receptor (ER)-positive breast cancer cells. HOXA5 expression is critical for breast cancer cell viability. Biochemical studies show that estradiol (E2) regulates HOXA5 gene expression in cultured breast cancer cells in vitro. HOXA5 expression is also upregulated in vivo in the mammary tissues of ovariectomized female rats. E2-induced HOXA5 expression is coordinated by ERs. Knockdown of either ERα or ERβ downregulated E2-induced HOXA5 expression. Additionally, ER co-regulators, including CBP/p300 (histone acetylases) and MLL-histone methylases (MLL2, MLL3), histone acetylation-, and H3K4 trimethylation levels are enriched at the HOXA5 promoter in present E2. In summary, our studies demonstrate that HOXA5 is overexpressed in breast cancer and is transcriptionally regulated via estradiol in breast cancer cells.https://www.frontiersin.org/articles/10.3389/fgene.2020.592436/fullHOXA5breast cancerestradiolgene expressionestrogen receptorschromatin |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Imran Hussain Paromita Deb Avisankar Chini Monira Obaid Arunoday Bhan Khairul I. Ansari Bibhu P. Mishra Samara A. Bobzean S. M. Nashir Udden Prasanna G. Alluri Hriday K. Das Robert Matthew Brothers Linda I. Perrotti Subhrangsu S. Mandal |
spellingShingle |
Imran Hussain Paromita Deb Avisankar Chini Monira Obaid Arunoday Bhan Khairul I. Ansari Bibhu P. Mishra Samara A. Bobzean S. M. Nashir Udden Prasanna G. Alluri Hriday K. Das Robert Matthew Brothers Linda I. Perrotti Subhrangsu S. Mandal HOXA5 Expression Is Elevated in Breast Cancer and Is Transcriptionally Regulated by Estradiol Frontiers in Genetics HOXA5 breast cancer estradiol gene expression estrogen receptors chromatin |
author_facet |
Imran Hussain Paromita Deb Avisankar Chini Monira Obaid Arunoday Bhan Khairul I. Ansari Bibhu P. Mishra Samara A. Bobzean S. M. Nashir Udden Prasanna G. Alluri Hriday K. Das Robert Matthew Brothers Linda I. Perrotti Subhrangsu S. Mandal |
author_sort |
Imran Hussain |
title |
HOXA5 Expression Is Elevated in Breast Cancer and Is Transcriptionally Regulated by Estradiol |
title_short |
HOXA5 Expression Is Elevated in Breast Cancer and Is Transcriptionally Regulated by Estradiol |
title_full |
HOXA5 Expression Is Elevated in Breast Cancer and Is Transcriptionally Regulated by Estradiol |
title_fullStr |
HOXA5 Expression Is Elevated in Breast Cancer and Is Transcriptionally Regulated by Estradiol |
title_full_unstemmed |
HOXA5 Expression Is Elevated in Breast Cancer and Is Transcriptionally Regulated by Estradiol |
title_sort |
hoxa5 expression is elevated in breast cancer and is transcriptionally regulated by estradiol |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Genetics |
issn |
1664-8021 |
publishDate |
2020-12-01 |
description |
HOXA5 is a homeobox-containing gene associated with the development of the lung, gastrointestinal tract, and vertebrae. Here, we investigate potential roles and the gene regulatory mechanism in HOXA5 in breast cancer cells. Our studies demonstrate that HOXA5 expression is elevated in breast cancer tissues and in estrogen receptor (ER)-positive breast cancer cells. HOXA5 expression is critical for breast cancer cell viability. Biochemical studies show that estradiol (E2) regulates HOXA5 gene expression in cultured breast cancer cells in vitro. HOXA5 expression is also upregulated in vivo in the mammary tissues of ovariectomized female rats. E2-induced HOXA5 expression is coordinated by ERs. Knockdown of either ERα or ERβ downregulated E2-induced HOXA5 expression. Additionally, ER co-regulators, including CBP/p300 (histone acetylases) and MLL-histone methylases (MLL2, MLL3), histone acetylation-, and H3K4 trimethylation levels are enriched at the HOXA5 promoter in present E2. In summary, our studies demonstrate that HOXA5 is overexpressed in breast cancer and is transcriptionally regulated via estradiol in breast cancer cells. |
topic |
HOXA5 breast cancer estradiol gene expression estrogen receptors chromatin |
url |
https://www.frontiersin.org/articles/10.3389/fgene.2020.592436/full |
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