Skip to main content
Advertisement

Main menu

  • Home
  • Articles
    • Current Issue
    • Fast Forward
    • Latest Articles
    • Special Sections
    • Archive
  • Information
    • Instructions to Authors
    • Submit a Manuscript
    • FAQs
    • For Subscribers
    • Terms & Conditions of Use
    • Permissions
  • Editorial Board
  • Alerts
    • Alerts
    • RSS Feeds
  • Virtual Issues
  • Feedback
  • Submit
  • Other Publications
    • Drug Metabolism and Disposition
    • Journal of Pharmacology and Experimental Therapeutics
    • Molecular Pharmacology
    • Pharmacological Reviews
    • Pharmacology Research & Perspectives
    • ASPET

User menu

  • My alerts
  • Log in
  • My Cart

Search

  • Advanced search
Journal of Pharmacology and Experimental Therapeutics
  • Other Publications
    • Drug Metabolism and Disposition
    • Journal of Pharmacology and Experimental Therapeutics
    • Molecular Pharmacology
    • Pharmacological Reviews
    • Pharmacology Research & Perspectives
    • ASPET
  • My alerts
  • Log in
  • My Cart
Journal of Pharmacology and Experimental Therapeutics

Advanced Search

  • Home
  • Articles
    • Current Issue
    • Fast Forward
    • Latest Articles
    • Special Sections
    • Archive
  • Information
    • Instructions to Authors
    • Submit a Manuscript
    • FAQs
    • For Subscribers
    • Terms & Conditions of Use
    • Permissions
  • Editorial Board
  • Alerts
    • Alerts
    • RSS Feeds
  • Virtual Issues
  • Feedback
  • Submit
  • Visit jpet on Facebook
  • Follow jpet on Twitter
  • Follow jpet on LinkedIn
Research ArticleMetabolism, Transport, and Pharmacogenomics

Differential Role of Organic Anion-Transporting Polypeptides in Estrone-3-Sulphate Uptake by Breast Epithelial Cells and Breast Cancer Cells

Nilasha Banerjee, Christine Allen and Reina Bendayan
Journal of Pharmacology and Experimental Therapeutics August 2012, 342 (2) 510-519; DOI: https://doi.org/10.1124/jpet.112.192344
Nilasha Banerjee
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Christine Allen
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Reina Bendayan
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • Article
  • Figures & Data
  • Info & Metrics
  • eLetters
  • PDF
Loading

Abstract

The purpose of this study was to investigate the differential expression and function of organic anion-transporting polypeptides (OATPs) in breast epithelial and breast cancer cells. Estrone-3-sulfate (E3S), a substrate for 7 of 11 OATPs, is a predominant source of tumor estrogen in postmenopausal, hormone-dependent patients with breast cancer. Overexpression of certain OATPs (e.g., OATP1A2) reported in breast tumor tissues compared with surrounding normal tissues could contribute toward two to three times higher tumoral E3S concentration. Little is known about expression and function of other OATP family members among breast epithelial and breast cancer cells. We therefore compared gene and protein expression of seven OATPs (OATP1A2,OATP1B1,OATP1B3,OATP1C1,OATP2B1,OATP3A1, and OATP4A1) in immortalized breast epithelial cells (MCF10A), hormone-dependent breast cancer cells (MCF7), and hormone-independent breast cancer cells (MDA/LCC6-435, MDA-MB-231, and MDA-MB-468) by quantitative polymerase chain reaction and immunoblotting, respectively. Expression of solute carrier superfamily encoding for OATPs (SLCO) 1A2, 1B1, 1B3, 2B1, and 3A1 is exclusive, similar, or significantly higher in cancer cells compared with MCF10A cells. Protein expression of OATPs is found to be either exclusive or higher in cancer cells compared with MCF10A cells. Specificity of OATP-mediated E3S uptake is observed only in cancer cells, with the highest total uptake in MCF7 cells. Transport kinetics of E3S uptake demonstrates transport efficiency that is 10 times greater in the MCF7 cells than in the hormone-independent cells. These data suggest that OATPs could be a novel therapeutic target for hormone-dependent breast cancers, particularly in postmenopausal patients, where the major source of tumor estrogen is E3S.

Footnotes

  • This research was supported by internal start-up funds from the University of Toronto (to R.B.). R.B. is a Career Scientist, Ontario HIV Treatment Network, Ministry of Health of Ontario. N.B. is a recipient of a predoctoral fellowship award from the Canadian Institutes of Health Research's Strategic Training in Biological Therapeutics Program.

  • Article, publication date, and citation information can be found at http://jpet.aspetjournals.org.

    http://dx.doi.org/10.1124/jpet.112.192344.

  • ABBREVIATIONS:

    E3S
    estrone-3-sulfate
    OATP
    organic anion-transporting polypeptide
    SLCO
    solute carrier superfamily encoding for OATPs
    BSP
    bromosulphophthalein
    MDCKII
    Madin Darby canine kidney II
    HEK
    human embryonic kidney
    ANOVA
    analysis of variance
    PCR
    polymerase chain reaction
    qPCR
    quantitative PCR
    Amp
    ampicillin.

  • Received January 23, 2012.
  • Accepted May 14, 2012.
  • Copyright © 2012 by The American Society for Pharmacology and Experimental Therapeutics
View Full Text

JPET articles become freely available 12 months after publication, and remain freely available for 5 years. 

Non-open access articles that fall outside this five year window are available only to institutional subscribers and current ASPET members, or through the article purchase feature at the bottom of the page. 

 

  • Click here for information on institutional subscriptions.
  • Click here for information on individual ASPET membership.

 

Log in using your username and password

Forgot your user name or password?

Purchase access

You may purchase access to this article. This will require you to create an account if you don't already have one.
PreviousNext
Back to top

In this issue

Journal of Pharmacology and Experimental Therapeutics: 342 (2)
Journal of Pharmacology and Experimental Therapeutics
Vol. 342, Issue 2
1 Aug 2012
  • Table of Contents
  • Table of Contents (PDF)
  • About the Cover
  • Index by author
  • Editorial Board (PDF)
  • Front Matter (PDF)
Download PDF
Article Alerts
Sign In to Email Alerts with your Email Address
Email Article

Thank you for sharing this Journal of Pharmacology and Experimental Therapeutics article.

NOTE: We request your email address only to inform the recipient that it was you who recommended this article, and that it is not junk mail. We do not retain these email addresses.

Enter multiple addresses on separate lines or separate them with commas.
Differential Role of Organic Anion-Transporting Polypeptides in Estrone-3-Sulphate Uptake by Breast Epithelial Cells and Breast Cancer Cells
(Your Name) has forwarded a page to you from Journal of Pharmacology and Experimental Therapeutics
(Your Name) thought you would be interested in this article in Journal of Pharmacology and Experimental Therapeutics.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Citation Tools
Research ArticleMetabolism, Transport, and Pharmacogenomics

Role of OATPs in Breast Cancers

Nilasha Banerjee, Christine Allen and Reina Bendayan
Journal of Pharmacology and Experimental Therapeutics August 1, 2012, 342 (2) 510-519; DOI: https://doi.org/10.1124/jpet.112.192344

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero

Share
Research ArticleMetabolism, Transport, and Pharmacogenomics

Role of OATPs in Breast Cancers

Nilasha Banerjee, Christine Allen and Reina Bendayan
Journal of Pharmacology and Experimental Therapeutics August 1, 2012, 342 (2) 510-519; DOI: https://doi.org/10.1124/jpet.112.192344
Reddit logo Twitter logo Facebook logo Mendeley logo
  • Tweet Widget
  • Facebook Like
  • Google Plus One

Jump to section

  • Article
    • Abstract
    • Introduction
    • Materials and Methods
    • Results
    • Discussion
    • Authorship Contributions
    • Acknowledgments
    • Footnotes
    • References
  • Figures & Data
  • Info & Metrics
  • eLetters
  • PDF

Related Articles

Cited By...

More in this TOC Section

  • HDL Mimetic 4F Modulates Aβ Distribution in Brain and Plasma
  • AOX1 Inhibition by Gefitinib, Erlotinib, and Metabolites
  • Catalytic Activity of CYP2C9 Variants
Show more Metabolism, Transport, and Pharmacogenomics

Similar Articles

Advertisement
  • Home
  • Alerts
Facebook   Twitter   LinkedIn   RSS

Navigate

  • Current Issue
  • Fast Forward by date
  • Fast Forward by section
  • Latest Articles
  • Archive
  • Search for Articles
  • Feedback
  • ASPET

More Information

  • About JPET
  • Editorial Board
  • Instructions to Authors
  • Submit a Manuscript
  • Customized Alerts
  • RSS Feeds
  • Subscriptions
  • Permissions
  • Terms & Conditions of Use

ASPET's Other Journals

  • Drug Metabolism and Disposition
  • Molecular Pharmacology
  • Pharmacological Reviews
  • Pharmacology Research & Perspectives
ISSN 1521-0103 (Online)

Copyright © 2023 by the American Society for Pharmacology and Experimental Therapeutics