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Title: β1 integrin mediates an alternative survival pathway in breast cancer cells resistant to lapatinib

Abstract

The overexpression of human epidermal growth factor receptor (HER)-2 in 20% of human breast cancers and its association with aggressive growth has led to widespread use of HER2-targeted therapies, such as trastuzumab (T) and lapatinib (L). Despite the success of these drugs, their efficacy is limited in patients whose tumors demonstrate de novo or acquired resistance to treatment. The b1 integrin resides on the membrane of the breast cancer cell, activating several elements of breast tumor progression including proliferation and survival. We developed a panel of HER2-overexpressing cell lines resistant to L, T, and the potent LT combination through long-term exposure and validated these models in 3D culture. Parental and L/T/LT-resistant cells were subject to HER2 and b1 integrin inhibitors in 3D and monitored for 12 days, followed by quantification of colony number. Parallel experiments were conducted where cells were either stained for Ki-67 and Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) or harvested for protein and analyzed by immunoblot. Results were subjected to statistical testing using analysis of variance and linear contrasts, followed by adjustment with the Sidak method. Using multiple cell lines including BT474 and HCC1954, we reveal that in L and LT resistance, where phosphorylation ofmore » EGFR/HER1, HER2, and HER3 are strongly inhibited, kinases downstream of b1 integrin– including focal adhesion kinase (FAK) and Src–are up-regulated. Blockade of b1 by the antibody AIIB2 abrogates this up-regulation and functionally achieves significant growth inhibition of L and LT resistant cells in 3D, without dramatically affecting the parental cells. SiRNA against b1 as well as pharmacologic inhibition of FAK achieve the same growth inhibitory effect. In contrast, trastuzumab-resistant cells, which retain high levels of phosphorylated EGFR/HER1, HER2, and HER3, are only modestly growth-inhibited by AIIB2. Our data suggest that HER2 activity, which is suppressed in resistance involving L but not T alone, dictates whether b1 mediates an alternative pathway driving resistance. Our findings justify clinical studies investigating the inhibition of b1 or its downstream signaling moieties as strategies to overcome acquired L and LT resistance.« less

Authors:
 [1];  [2];  [1];  [1];  [1];  [1];  [1];  [3];  [1];  [1]
  1. Baylor University, Houston, TX (United States)
  2. University of California, San Francisco, CA (United States)
  3. Lawrence Berkeley National Laboratory (LBNL), Berkeley, 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); Susan G. Komen Race for the Cure; National Cancer Institute (NCI); National Institutes of Health (NIH); American Cancer Society
OSTI Identifier:
1626696
Grant/Contract Number:  
AC02-05CH11231; BCTR0708226; P50 CA058183; 1R01CA124891-01; RSG-07-1110-01-CCE
Resource Type:
Accepted Manuscript
Journal Name:
Breast Cancer Research
Additional Journal Information:
Journal Volume: 13; Journal Issue: 4; Journal ID: ISSN 1465-542X
Publisher:
BioMed Central
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; trastuzmab; human epidermal growth factor receptor; HCC1954 cell; focal adhesion kinase; lapatinib

Citation Formats

Huang, Catherine, Park, Catherine C., Hilsenbeck, Susan G., Ward, Robin, Rimawi, Mothaffar F., Wang, Yen-chao, Shou, Jiang, Bissell, Mina J., Osborne, C. Kent, and Schiff, Rachel. β1 integrin mediates an alternative survival pathway in breast cancer cells resistant to lapatinib. United States: N. p., 2011. Web. doi:10.1186/bcr2936.
Huang, Catherine, Park, Catherine C., Hilsenbeck, Susan G., Ward, Robin, Rimawi, Mothaffar F., Wang, Yen-chao, Shou, Jiang, Bissell, Mina J., Osborne, C. Kent, & Schiff, Rachel. β1 integrin mediates an alternative survival pathway in breast cancer cells resistant to lapatinib. United States. https://doi.org/10.1186/bcr2936
Huang, Catherine, Park, Catherine C., Hilsenbeck, Susan G., Ward, Robin, Rimawi, Mothaffar F., Wang, Yen-chao, Shou, Jiang, Bissell, Mina J., Osborne, C. Kent, and Schiff, Rachel. Wed . "β1 integrin mediates an alternative survival pathway in breast cancer cells resistant to lapatinib". United States. https://doi.org/10.1186/bcr2936. https://www.osti.gov/servlets/purl/1626696.
@article{osti_1626696,
title = {β1 integrin mediates an alternative survival pathway in breast cancer cells resistant to lapatinib},
author = {Huang, Catherine and Park, Catherine C. and Hilsenbeck, Susan G. and Ward, Robin and Rimawi, Mothaffar F. and Wang, Yen-chao and Shou, Jiang and Bissell, Mina J. and Osborne, C. Kent and Schiff, Rachel},
abstractNote = {The overexpression of human epidermal growth factor receptor (HER)-2 in 20% of human breast cancers and its association with aggressive growth has led to widespread use of HER2-targeted therapies, such as trastuzumab (T) and lapatinib (L). Despite the success of these drugs, their efficacy is limited in patients whose tumors demonstrate de novo or acquired resistance to treatment. The b1 integrin resides on the membrane of the breast cancer cell, activating several elements of breast tumor progression including proliferation and survival. We developed a panel of HER2-overexpressing cell lines resistant to L, T, and the potent LT combination through long-term exposure and validated these models in 3D culture. Parental and L/T/LT-resistant cells were subject to HER2 and b1 integrin inhibitors in 3D and monitored for 12 days, followed by quantification of colony number. Parallel experiments were conducted where cells were either stained for Ki-67 and Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) or harvested for protein and analyzed by immunoblot. Results were subjected to statistical testing using analysis of variance and linear contrasts, followed by adjustment with the Sidak method. Using multiple cell lines including BT474 and HCC1954, we reveal that in L and LT resistance, where phosphorylation of EGFR/HER1, HER2, and HER3 are strongly inhibited, kinases downstream of b1 integrin– including focal adhesion kinase (FAK) and Src–are up-regulated. Blockade of b1 by the antibody AIIB2 abrogates this up-regulation and functionally achieves significant growth inhibition of L and LT resistant cells in 3D, without dramatically affecting the parental cells. SiRNA against b1 as well as pharmacologic inhibition of FAK achieve the same growth inhibitory effect. In contrast, trastuzumab-resistant cells, which retain high levels of phosphorylated EGFR/HER1, HER2, and HER3, are only modestly growth-inhibited by AIIB2. Our data suggest that HER2 activity, which is suppressed in resistance involving L but not T alone, dictates whether b1 mediates an alternative pathway driving resistance. Our findings justify clinical studies investigating the inhibition of b1 or its downstream signaling moieties as strategies to overcome acquired L and LT resistance.},
doi = {10.1186/bcr2936},
journal = {Breast Cancer Research},
number = 4,
volume = 13,
place = {United States},
year = {Wed Aug 31 00:00:00 EDT 2011},
month = {Wed Aug 31 00:00:00 EDT 2011}
}

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  • Breast Cancer Research, Vol. 16, Issue 5
  • DOI: 10.1186/s13058-014-0459-x

Bayesian model of signal rewiring reveals mechanisms of gene dysregulation in acquired drug resistance in breast cancer
journal, March 2017


Loss of phosphodiesterase 4D mediates acquired triapine resistance via Epac-Rap1-Integrin signaling
journal, September 2016


A long non-coding RNA signature to improve prognosis prediction of colorectal cancer
journal, April 2014


Feedback activation of STAT3 mediates trastuzumab resistance via upregulation of MUC1 and MUC4 expression
journal, June 2014


Anticancer activity of paclitaxel-loaded keratin nanoparticles in two-dimensional and perfused three-dimensional breast cancer models
journal, August 2018

  • Foglietta, Federica; Spagnoli, Giulio C.; Muraro, Manuele Giuseppe
  • International Journal of Nanomedicine, Vol. Volume 13
  • DOI: 10.2147/ijn.s159942

Prognostic value of increased integrin-beta 1 expression in solid cancers: a meta-analysis
journal, March 2018

  • Sun, Quanwu; Zhou, Chuan; Ma, Ruofei
  • OncoTargets and Therapy, Vol. Volume 11
  • DOI: 10.2147/ott.s155279

In vitro Development of Chemotherapy and Targeted Therapy Drug-Resistant Cancer Cell Lines: A Practical Guide with Case Studies
journal, March 2014

  • McDermott, Martina; Eustace, Alex J.; Busschots, Steven
  • Frontiers in Oncology, Vol. 4
  • DOI: 10.3389/fonc.2014.00040

HER2-Targeted Tyrosine Kinase Inhibitors Cause Therapy-Induced-Senescence in Breast Cancer Cells
journal, February 2019


Role of Integrins in Resistance to Therapies Targeting Growth Factor Receptors in Cancer
journal, May 2019

  • Cruz da Silva, Elisabete; Dontenwill, Monique; Choulier, Laurence
  • Cancers, Vol. 11, Issue 5
  • DOI: 10.3390/cancers11050692

β1 Integrin as a Prognostic and Predictive Marker in Triple-Negative Breast Cancer
journal, August 2016

  • Yin, Hsin-Ling; Wu, Chun-Chieh; Lin, Chih-Hung
  • International Journal of Molecular Sciences, Vol. 17, Issue 9
  • DOI: 10.3390/ijms17091432