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Title: Deficiency of the p53/p63 target Perp alters mammary gland homeostasis and promotes cancer

Abstract

Perp is a transcriptional target of both p53 during DNA damage-induced apoptosis and p63 during stratified epithelial development. Perp-/- mice exhibit postnatal lethality associated with dramatic blistering of the epidermis and oral mucosa, reflecting a critical role in desmosome-mediated intercellular adhesion in keratinocytes. However, the role of Perp in tissue homeostasis in other p63-dependent stratified epithelial tissues is poorly understood. Given that p63 is essential for proper mammary gland development and that cell adhesion is fundamental for ensuring the proper architecture and function of the mammary epithelium, here we investigate Perp function in the mammary gland. Immunofluorescence and Western blot analysis were performed to characterize Perp expression and localization in the mouse mammary epithelium throughout development. The consequences of Perp deficiency for mammary epithelial development and homeostasis were examined by using in vivo mammary transplant assays. Perp protein levels in a variety of human breast cancer cell lines were compared with those in untransformed cells with Western blot analysis. The role of Perp in mouse mammary tumorigenesis was investigated by aging cohorts of K14-Cre/+;p53fl/fl mice that were wild-type or deficient for Perp. Mammary tumor latency was analyzed, and tumor-free survival was assessed using Kaplan-Meier analysis. We show that Perp proteinmore » is expressed in the mammary epithelium, where it colocalizes with desmosomes. Interestingly, although altering desmosomes through genetic inactivation of Perp does not dramatically impair mammary gland ductal development, Perp loss affects mammary epithelial homeostasis by causing the accumulation of inflammatory cells around mature mammary epithelium. Moreover, we show reduced Perp expression in many human breast cancer cell lines compared with untransformed cells. Importantly, Perp deficiency also promotes the development of mouse mammary cancer. Together, these observations demonstrate an important role for Perp in normal mammary tissue function and in mammary cancer suppression. In addition, our findings highlight the importance of desmosomes in cancer suppression and suggest the merit of evaluating Perp as a potential prognostic indicator or molecular target in breast cancer therapy.« less

Authors:
 [1];  [2];  [1];  [1];  [3];  [2];  [1]
  1. Stanford University, CA (United States)
  2. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  3. University of California, Davis, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER); American Cancer Society; Susan G. Komen Foundation; National Institutes of Health (NIH); National Cancer Institute (NCI); USDOD
OSTI Identifier:
1626698
Grant/Contract Number:  
AC02-05CH11231; PF-08-259-01-CSM; KG080306; K26 RR024037; R37CA064786; U54CA143836; W81XWH0810736; F32CA130365; 5 R01 CA093665-10
Resource Type:
Accepted Manuscript
Journal Name:
Breast Cancer Research
Additional Journal Information:
Journal Volume: 14; Journal Issue: 2; Journal ID: ISSN 1465-542X
Publisher:
BioMed Central
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; oncology; mammary gland; mammary epithelial cell; myoepithelial cell; human breast cancer cell line; mammary epithelium

Citation Formats

Dusek, Rachel L., Bascom, Jamie L., Vogel, Hannes, Baron, Sylvain, Borowsky, Alexander D., Bissell, Mina J., and Attardi, Laura D. Deficiency of the p53/p63 target Perp alters mammary gland homeostasis and promotes cancer. United States: N. p., 2012. Web. doi:10.1186/bcr3171.
Dusek, Rachel L., Bascom, Jamie L., Vogel, Hannes, Baron, Sylvain, Borowsky, Alexander D., Bissell, Mina J., & Attardi, Laura D. Deficiency of the p53/p63 target Perp alters mammary gland homeostasis and promotes cancer. United States. https://doi.org/10.1186/bcr3171
Dusek, Rachel L., Bascom, Jamie L., Vogel, Hannes, Baron, Sylvain, Borowsky, Alexander D., Bissell, Mina J., and Attardi, Laura D. Fri . "Deficiency of the p53/p63 target Perp alters mammary gland homeostasis and promotes cancer". United States. https://doi.org/10.1186/bcr3171. https://www.osti.gov/servlets/purl/1626698.
@article{osti_1626698,
title = {Deficiency of the p53/p63 target Perp alters mammary gland homeostasis and promotes cancer},
author = {Dusek, Rachel L. and Bascom, Jamie L. and Vogel, Hannes and Baron, Sylvain and Borowsky, Alexander D. and Bissell, Mina J. and Attardi, Laura D.},
abstractNote = {Perp is a transcriptional target of both p53 during DNA damage-induced apoptosis and p63 during stratified epithelial development. Perp-/- mice exhibit postnatal lethality associated with dramatic blistering of the epidermis and oral mucosa, reflecting a critical role in desmosome-mediated intercellular adhesion in keratinocytes. However, the role of Perp in tissue homeostasis in other p63-dependent stratified epithelial tissues is poorly understood. Given that p63 is essential for proper mammary gland development and that cell adhesion is fundamental for ensuring the proper architecture and function of the mammary epithelium, here we investigate Perp function in the mammary gland. Immunofluorescence and Western blot analysis were performed to characterize Perp expression and localization in the mouse mammary epithelium throughout development. The consequences of Perp deficiency for mammary epithelial development and homeostasis were examined by using in vivo mammary transplant assays. Perp protein levels in a variety of human breast cancer cell lines were compared with those in untransformed cells with Western blot analysis. The role of Perp in mouse mammary tumorigenesis was investigated by aging cohorts of K14-Cre/+;p53fl/fl mice that were wild-type or deficient for Perp. Mammary tumor latency was analyzed, and tumor-free survival was assessed using Kaplan-Meier analysis. We show that Perp protein is expressed in the mammary epithelium, where it colocalizes with desmosomes. Interestingly, although altering desmosomes through genetic inactivation of Perp does not dramatically impair mammary gland ductal development, Perp loss affects mammary epithelial homeostasis by causing the accumulation of inflammatory cells around mature mammary epithelium. Moreover, we show reduced Perp expression in many human breast cancer cell lines compared with untransformed cells. Importantly, Perp deficiency also promotes the development of mouse mammary cancer. Together, these observations demonstrate an important role for Perp in normal mammary tissue function and in mammary cancer suppression. In addition, our findings highlight the importance of desmosomes in cancer suppression and suggest the merit of evaluating Perp as a potential prognostic indicator or molecular target in breast cancer therapy.},
doi = {10.1186/bcr3171},
journal = {Breast Cancer Research},
number = 2,
volume = 14,
place = {United States},
year = {Fri Apr 20 00:00:00 EDT 2012},
month = {Fri Apr 20 00:00:00 EDT 2012}
}

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A collection of breast cancer cell lines for the study of functionally distinct cancer subtypes
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CD4+ T Cells Regulate Pulmonary Metastasis of Mammary Carcinomas by Enhancing Protumor Properties of Macrophages
journal, August 2009


Perp Is a p63-Regulated Gene Essential for Epithelial Integrity
journal, March 2005


Expression of p53-induced apoptosis effector PERP in primary uveal melanomas: Downregulation is associated with aggressive type
journal, October 2006


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Biogenesis and function of mouse mammary epithelium depends on the presence of functional α-catenin
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  • DOI: 10.1016/j.mod.2003.09.007

The MAPKERK-1,2 pathway integrates distinct and antagonistic signals from TGFα and FGF7 in morphogenesis of mouse mammary epithelium
journal, June 2007


p63 is a p53 homologue required for limb and epidermal morphogenesis
journal, April 1999

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  • Nature, Vol. 398, Issue 6729
  • DOI: 10.1038/19531

p63 is essential for regenerative proliferation in limb, craniofacial and epithelial development
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  • Nature, Vol. 398, Issue 6729
  • DOI: 10.1038/19539

Desmosomal adhesion regulates epithelial morphogenesis and cell positioning
journal, August 2001

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  • DOI: 10.1038/ncb0901-823

Synergistic tumor suppressor activity of BRCA2 and p53 in a conditional mouse model for breast cancer
journal, November 2001

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  • Nature Genetics, Vol. 29, Issue 4
  • DOI: 10.1038/ng747

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journal, September 2005

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p63 is the molecular switch for initiation of an epithelial stratification program
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Macrophages Regulate the Angiogenic Switch in a Mouse Model of Breast Cancer
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Works referencing / citing this record:

Caspase-1 is a novel target of p63 in tumor suppression
journal, May 2013


Desmosomes in acquired disease
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150th Anniversary Series: Desmosomes and the Hallmarks of Cancer
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Caspase-1 is a novel target of p63 in tumor suppression
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