1
|
Elwaie TA, Abbas SE, Aly EI, George RF, Ali H, Kraiouchkine N, Abdelwahed KS, Fandy TE, El Sayed KA, Abd Elmageed ZY, Ali HI. HER2 Kinase-Targeted Breast Cancer Therapy: Design, Synthesis, and In Vitro and In Vivo Evaluation of Novel Lapatinib Congeners as Selective and Potent HER2 Inhibitors with Favorable Metabolic Stability. J Med Chem 2020; 63:15906-15945. [PMID: 33314925 DOI: 10.1021/acs.jmedchem.0c01647] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
HER2 kinase as a well-established target for breast cancer (BC) therapy is associated with aggressive clinical outcomes; thus, herein we present structural optimization for HER2-selective targeting. HER2 profiling of the developed derivatives demonstrated potent and selective inhibitions (IC50: 5.4-12 nM) compared to lapatinib (IC50: 95.5 nM). Favorably, 17d exhibited minimum off-target kinase activation. NCI-5-dose screening revealed broad-spectrum activities (GI50: 1.43-2.09 μM) and 17d had a remarkable selectivity toward BC. Our compounds revealed significant selective and potent antiproliferative activities (∼20-fold) against HER2+ (AU565, BT474) compared to HER2(-) cells. At 0.1 IC50, 15i, 17d, and 25b inhibited pERK1/2 and pAkt by immunoblotting. Furthermore, 17d demonstrated potent in vivo tumor regression against the BT474 xenograft model. Notably, a metastasis case was observed in the vehicle but not in the test mice groups. CD-1 mice metabolic stability assay revealed high stability and low intrinsic clearance of 17d (T1/2 > 145 min and CLint(mic) < 9.6 mL/min/kg).
Collapse
Affiliation(s)
- Tamer A Elwaie
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M University, College Station, Kingsville, Texas 78363, United States.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Safinaz E Abbas
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Enayat I Aly
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Riham F George
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Hamdy Ali
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M University, College Station, Kingsville, Texas 78363, United States
| | - Nikolai Kraiouchkine
- Department of Physical and Environmental Sciences, Texas A&M University, Corpus Christi, Texas 78412, United States
| | - Khaldoun S Abdelwahed
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Drive, Monroe, Louisiana 71201, United States
| | - Tamer E Fandy
- Department of Pharmaceutical & Administrative Sciences, School of Pharmacy, University of Charleston, Charleston, West Virginia 25304, United States
| | - Khalid A El Sayed
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Drive, Monroe, Louisiana 71201, United States
| | - Zakaria Y Abd Elmageed
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M University, College Station, Kingsville, Texas 78363, United States.,Department of Pharmacology, Edward Via College of Osteopathic Medicine, University of Louisiana at Monroe, Monroe, Louisiana 71203, United States
| | - Hamed I Ali
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M University, College Station, Kingsville, Texas 78363, United States
| |
Collapse
|
2
|
Bie L, Luo S, Li D, Wei Y, Mu Y, Chen X, Wang S, Guo P, Lu X. HOTAIR Competitively Binds MiRNA330 as a Molecular Sponge to Increase the Resistance of Gastric Cancer to Trastuzumab. Curr Cancer Drug Targets 2020; 20:700-709. [PMID: 32364078 DOI: 10.2174/1568009620666200504114000] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/08/2020] [Accepted: 04/15/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND HOTAIR, one of the most widely studied long non-coding RNAs in tumors, is closely related to tumor proliferation, migration, invasion and chemoresistance. OBJECTIVE Here, we studied the mechanism behind proliferation and chemoresistance processes. METHODS A total of 75 samples were collected from patients who underwent surgical resection of their gastric cancer and received trastuzumab treatment. Primary cells were isolated and cultured. We also developed a cell line overexpressing HOTAIR by constructing a lentiviral vector. These cell lines were studied using an array of established biomolecular methods. RESULTS We found that HOTAIR levels were inversely associated with sensitivity to trastuzumab in gastric cancer and that overexpression of HOTAIR can promote the proliferation and invasion of gastric cancer cells. The sensitivity of cells overexpressing HOTAIR to two different types of human epidermal growth factor receptor 2 (HER2) inhibitors (trastuzumab and afatinib) showed that overexpression of HOTAIR is specific for trastuzumab resistance. Furthermore, luciferase reporter gene assay and western blot assay showed that there is a HOTAIR-miRNA330-ERBB4 competitive endogenous RNA regulatory network with miRNA330 as the core. CONCLUSION HOTAIR can not only promote tumor proliferation but also enhance the resistance of tumor cells to drugs. Our experimental data not only showed strong expression of HOTAIR in gastric cancer, but also that strong expression of HOTAIR caused the sensitivity of gastric cancer cells to trastuzumab, which is a useful reference for postoperative medication.
Collapse
Affiliation(s)
- Liangyu Bie
- Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University / Henan Cancer Hospital, Zhengzhou, Henan Province, China
| | - Suxia Luo
- Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University / Henan Cancer Hospital, Zhengzhou, Henan Province, China
| | - Dan Li
- Department of General Surgery, Affiliated Cancer Hospital of Zhengzhou University / Henan Cancer Hospital, Zhengzhou, Henan Province, China
| | - Yan Wei
- Department of Pathology, Nanyang Medical College, Nanyang, Henan province, China
| | - Yu Mu
- Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University / Henan Cancer Hospital, Zhengzhou, Henan Province, China
| | - Xiaobing Chen
- Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University / Henan Cancer Hospital, Zhengzhou, Henan Province, China
| | - Saiqi Wang
- Department of Oncology, Affiliated Cancer Hospital of Zhengzhou University / Henan Cancer Hospital, Zhengzhou, Henan Province, China
| | - Ping Guo
- Department of Oncology, The First Affiliated Hospital of Nanyang Medical College, Nanyang, Henan province, China
| | - Xiaoyu Lu
- Department of Pathology, Affiliated Cancer Hospital of Zhengzhou University / Henan Cancer Hospital, Zhengzhou, Henan province, China
| |
Collapse
|
3
|
Simond AM, Muller WJ. In vivo modeling of the EGFR family in breast cancer progression and therapeutic approaches. Adv Cancer Res 2020; 147:189-228. [PMID: 32593401 DOI: 10.1016/bs.acr.2020.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Modeling breast cancer through the generation of genetically engineered mouse models (GEMMs) has become the gold standard in the study of human breast cancer. Notably, the in vivo modeling of the epidermal growth factor receptor (EGFR) family has been key to the development of therapeutics and has helped better understand the signaling pathways involved in cancer initiation, progression and metastasis. The HER2/ErbB2 receptor is a member of the EGFR family and 20% of breast cancers are found to belong in the HER2-positive histological subtype. Historical and more recent advances in the field have shaped our understanding of HER2-positive breast cancer signaling and therapeutic approaches.
Collapse
Affiliation(s)
- Alexandra M Simond
- Rosalind and Morris Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - William J Muller
- Rosalind and Morris Goodman Cancer Research Center, McGill University, Montreal, QC, Canada; Department of Biochemistry, McGill University, Montreal, QC, Canada; Faculty of Medicine, McGill University, Montreal, QC, Canada.
| |
Collapse
|
4
|
Longo JF, Brosius SN, Black L, Worley SH, Wilson RC, Roth KA, Carroll SL. ErbB4 promotes malignant peripheral nerve sheath tumor pathogenesis via Ras-independent mechanisms. Cell Commun Signal 2019; 17:74. [PMID: 31291965 PMCID: PMC6621970 DOI: 10.1186/s12964-019-0388-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 07/02/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND We have found that erbB receptor tyrosine kinases drive Ras hyperactivation and growth in NF1-null malignant peripheral nerve sheath tumors (MPNSTs). However, MPNSTs variably express multiple erbB receptors with distinct functional characteristics and it is not clear which of these receptors drive MPNST pathogenesis. Here, we test the hypothesis that altered erbB4 expression promotes MPNST pathogenesis by uniquely activating key cytoplasmic signaling cascades. METHODS ErbB4 expression was assessed using immunohistochemistry, immunocytochemistry, immunoblotting and real-time PCR. To define erbB4 functions, we generated mice that develop MPNSTs with floxed Erbb4 alleles (P0-GGFβ3;Trp53+/-;Erbb4flox/flox mice) and ablated Erbb4 in these tumors. MPNST cell proliferation and survival was assessed using 3H-thymidine incorporation, MTT assays, Real-Time Glo and cell count assays. Control and Erbb4-null MPNST cells were orthotopically xenografted in immunodeficient mice and the growth, proliferation (Ki67 labeling), apoptosis (TUNEL labeling) and angiogenesis of these grafts was analyzed. Antibody arrays querying cytoplasmic kinases were used to identify erbB4-responsive kinases. Pharmacologic or genetic inhibition was used to identify erbB4-responsive kinases that drive proliferation. RESULTS Aberrant erbB4 expression was evident in 25/30 surgically resected human MPNSTs and in MPNSTs from genetically engineered mouse models (P0-GGFβ3 and P0-GGFβ3;Trp53+/- mice); multiple erbB4 splice variants that differ in their ability to activate PI3 kinase and nuclear signaling were present in MPNST-derived cell lines. Erbb4-null MPNST cells demonstrated decreased proliferation and survival and altered morphology relative to non-ablated controls. Orthotopic allografts of Erbb4-null cells were significantly smaller than controls, with reduced proliferation, survival and vascularization. ERBB4 knockdown in human MPNST cells similarly inhibited DNA synthesis and viability. Although we have previously shown that broad-spectrum erbB inhibitors inhibit Ras activation, Erbb4 ablation did not affect Ras activation, suggesting that erbB4 drives neoplasia via non-Ras dependent pathways. An analysis of 43 candidate kinases identified multiple NRG1β-responsive and erbB4-dependent signaling cascades including the PI3K, WNK1, STAT3, STAT5 and phospholipase-Cγ pathways. Although WNK1 inhibition did not alter proliferation, inhibition of STAT3, STAT5 and phospholipase-Cγ markedly reduced proliferation. CONCLUSIONS ErbB4 promotes MPNST growth by activating key non-Ras dependent signaling cascades including the STAT3, STAT5 and phospholipase-Cγ pathways. ErbB4 and its effector pathways are thus potentially useful therapeutic targets in MPNSTs.
Collapse
Affiliation(s)
- Jody Fromm Longo
- Department of Pathology and Laboratory Medicine (JFL, LB, RCW, SJW, SLC), Medical University of South Carolina, 171 Ashley Avenue, MSC 908, Charleston, SC 29425-9080 USA
| | - Stephanie N. Brosius
- Department of Pathology (SNB, KAR) and the Medical Scientist Training Program (SNB), University of Alabama at Birmingham, Birmingham, AL 35294-0017 USA
- Present address: Department of Pediatrics at The Children’s Hospital of Philadelphia, Philadelphia, PA USA
| | - Laurel Black
- Department of Pathology and Laboratory Medicine (JFL, LB, RCW, SJW, SLC), Medical University of South Carolina, 171 Ashley Avenue, MSC 908, Charleston, SC 29425-9080 USA
| | - Stuart H. Worley
- Department of Pathology and Laboratory Medicine (JFL, LB, RCW, SJW, SLC), Medical University of South Carolina, 171 Ashley Avenue, MSC 908, Charleston, SC 29425-9080 USA
| | - Robert C. Wilson
- Department of Pathology and Laboratory Medicine (JFL, LB, RCW, SJW, SLC), Medical University of South Carolina, 171 Ashley Avenue, MSC 908, Charleston, SC 29425-9080 USA
| | - Kevin A. Roth
- Department of Pathology (SNB, KAR) and the Medical Scientist Training Program (SNB), University of Alabama at Birmingham, Birmingham, AL 35294-0017 USA
- Present address: Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York City, NY USA
| | - Steven L. Carroll
- Department of Pathology and Laboratory Medicine (JFL, LB, RCW, SJW, SLC), Medical University of South Carolina, 171 Ashley Avenue, MSC 908, Charleston, SC 29425-9080 USA
| |
Collapse
|
5
|
Sahu A, Patra PK, Yadav MK, Varma M. Identification and characterization of ErbB4 kinase inhibitors for effective breast cancer therapy. J Recept Signal Transduct Res 2017; 37:470-480. [DOI: 10.1080/10799893.2017.1342129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ankita Sahu
- Department of Biochemistry, Pt. J.N.M. Medical College, Raipur, India
- Department of Biochemistry, Sri Aurobindo Institute of Medical Sciences, Indore, India
| | - P. K. Patra
- Department of Biochemistry, Pt. J.N.M. Medical College, Raipur, India
| | - Manoj Kumar Yadav
- Department of Biochemistry, Pt. J.N.M. Medical College, Raipur, India
| | - Meena Varma
- Department of Biochemistry, Sri Aurobindo Institute of Medical Sciences, Indore, India
| |
Collapse
|
6
|
Canfield K, Li J, Wilkins OM, Morrison MM, Ung M, Wells W, Williams CR, Liby KT, Vullhorst D, Buonanno A, Hu H, Schiff R, Cook RS, Kurokawa M. Receptor tyrosine kinase ERBB4 mediates acquired resistance to ERBB2 inhibitors in breast cancer cells. Cell Cycle 2015; 14:648-55. [PMID: 25590338 DOI: 10.4161/15384101.2014.994966] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Approximately 25% of breast cancers overexpress and depend on the receptor tyrosine kinase ERBB2, one of 4 ERBB family members. Targeted therapies directed against ERBB2 have been developed and used clinically, but many patients continue to develop resistance to such therapies. Although much effort has been focused on elucidating the mechanisms of acquired resistance to ERBB2-targeted therapies, the involvement of ERBB4 remains elusive and controversial. We demonstrate that genetic ablation of ERBB4, but not ERBB1-3, led to apoptosis in lapatinib-resistant cells, suggesting that the efficacy of pan-ERBB inhibitors was, at least in part, mediated by the inhibition of ERBB4. Moreover, ERBB4 was upregulated at the protein level in ERBB2+ breast cancer cell lines selected for acquired lapatinib resistance in vitro and in MMTV-Neu mice following prolonged lapatinib treatment. Knockdown of ERBB4 caused a decrease in AKT phosphorylation in resistant cells but not in sensitive cells, suggesting that ERBB4 activated the PI3K/AKT pathway in lapatinib-resistant cells. Importantly, ERBB4 knockdown triggered apoptosis not only in lapatinib-resistant cells but also in trastuzumab-resistant cells. Our results suggest that although ERBB4 is dispensable for naïve ERBB2+ breast cancer cells, it may play a key role in the survival of ERBB2+ cancer cells after they develop resistance to ERBB2 inhibitors, lapatinib and trastuzumab.
Collapse
Key Words
- EGFR
- EGFR, epidermal growth factor receptor
- ERK, extracellular regulated kinase
- FGFR, fibroblast growth factor receptor
- HER, human epidermal growth factor receptor
- HER2
- HER3
- HER4
- Herceptin
- MTS, 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium
- PI3K, phosphatidylinositol-4,5-bisphosphate 3-kinase
- Q-VD-OPh, quinolyl-valyl-O-methylaspartyl-[2,6-difluoro-phenoxy]-methyl ketone
- RTK, receptor tyrosine kinase
Collapse
|
7
|
Bersell K, Choudhury S, Mollova M, Polizzotti BD, Ganapathy B, Walsh S, Wadugu B, Arab S, Kühn B. Moderate and high amounts of tamoxifen in αMHC-MerCreMer mice induce a DNA damage response, leading to heart failure and death. Dis Model Mech 2013; 6:1459-69. [PMID: 23929941 PMCID: PMC3820268 DOI: 10.1242/dmm.010447] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Numerous mouse models have utilized Cre-loxP technology to modify gene expression. Adverse effects of Cre recombinase activity have been reported, including in the heart. However, the mechanisms associated with cardiac Cre toxicity are largely unknown. Here, we show that expression of Cre in cardiomyocytes induces a DNA damage response, resulting in cardiomyocyte apoptosis, cardiac fibrosis and cardiac dysfunction. In an effort to increase the recombination efficiency of a widely used tamoxifen-sensitive Cre transgene under control of the α-myosin-heavy-chain promoter (αMHC-MerCreMer), we observed myocardial dysfunction and decreased survival, which were dependent on the dose of tamoxifen injected. After excluding a Cre-independent contribution by tamoxifen, we found that Cre induced myocardial fibrosis, activation of pro-fibrotic genes and cardiomyocyte apoptosis. Examination of the molecular mechanisms showed activation of DNA damage response signaling and p53 stabilization in the absence of loxP sites, suggesting that Cre induced illegitimate DNA breaks. Cardiomyocyte apoptosis was also induced by expressing Cre using adenoviral transduction, indicating that the effect was not dependent on genomic integration of the transgene. Cre-mediated homologous recombination at loxP sites was dose-dependent and had a ceiling effect at ∼80% of cardiomyocytes showing recombination. By titrating the amount of tamoxifen to maximize recombination while minimizing animal lethality, we determined that 30 μg tamoxifen/g body weight/day injected on three consecutive days is the optimal condition for the αMHC-MerCreMer system to induce recombination in the Rosa26-lacZ strain. Our results further highlight the importance of experimental design, including the use of appropriate genetic controls for Cre expression.
Collapse
Affiliation(s)
- Kevin Bersell
- Department of Cardiology, Boston Children's Hospital, MA 02115, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Reduced androgen receptor expression accelerates the onset of ERBB2 induced breast tumors in female mice. PLoS One 2013; 8:e60455. [PMID: 23593223 PMCID: PMC3620158 DOI: 10.1371/journal.pone.0060455] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 02/26/2013] [Indexed: 11/21/2022] Open
Abstract
Androgen receptor (AR) is commonly expressed in both the epithelium of normal mammary glands and in breast cancers. AR expression in breast cancers is independent of estrogen receptor alpha (ERα) status and is frequently associated with overexpression of the ERBB2 oncogene. AR signaling effects on breast cancer progression may depend on ERα and ERBB2 status. Up to 30% of human breast cancers are driven by overactive ERBB2 signaling and it is not clear whether AR expression affects any steps of tumor progression in this cohort of patients. To test this, we generated mammary specific Ar depleted mice (MARKO) by combining the floxed allele of Ar with the MMTV-cre transgene on an MMTV-NeuNT background and compared them to littermate MMTV-NeuNT, Arfl/+ control females. Heterozygous MARKO females displayed reduced levels of AR in mammary glands with mosaic AR expression in ductal epithelium. The loss of AR dramatically accelerated the onset of MMTV-NeuNT tumors in female MARKO mice. In this report we show that accelerated MMTV-NeuNT-dependent tumorigenesis is due specifically to the loss of AR, as hormonal levels, estrogen and progesterone receptors expression, and MMTV-NeuNT expression were similar between MARKO and control groups. MMTV-NeuNT induced tumors in both cohorts displayed distinct loss of AR in addition to ERα, PR, and the pioneer factor FOXA1. Erbb3 mRNA levels were significantly elevated in tumors in comparison to normal mammary glands. Thus the loss of AR in mouse mammary epithelium accelerates malignant transformation rather than the rate of tumorigenesis.
Collapse
|
9
|
Transcription factor regulatory networks in mammary epithelial development and tumorigenesis. Oncogene 2010; 29:2753-9. [DOI: 10.1038/onc.2010.43] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
10
|
Abstract
Antibodies targeting the extracellular domains of ErbB receptors have been extensively studied for cancer drug development. This work has led to clinical approval of monoclonal antibodies against the well-known oncogenes EGFR and ErbB2. Here we discuss the biological activities of ErbB4, a less-studied member of the EGFR/ErbB growth factor receptor family and speculate on the potential clinical relevance of antibodies targeting ErbB4. In addition to their significance as therapeutics, the role of ErbB4 antibodies in prognostic and predictive applications is surveyed.
Collapse
Affiliation(s)
- Maija Hollmén
- Department of Medical Biochemistry and Genetics, and Medicity Research Laboratory, University of Turku, and Turku Graduate School of Biomedical Sciences, Turku, Finland
| | | |
Collapse
|
11
|
Abstract
Malignant melanomas are aggressive tumors that are largely refractory to conventional drug therapies. A recent study reported in Nature Genetics identified mutationally activated ErbB4 alleles in 20% of cases. These tumor cells exhibit ErbB4 dependency, suggesting that ErbB4 kinase inhibition may constitute an effective therapeutic strategy in this setting.
Collapse
Affiliation(s)
- Jeff Settleman
- Massachusetts General Hospital Cancer Center and Harvard Medical School, Charlestown, MA 02129, USA.
| |
Collapse
|
12
|
WW domain containing E3 ubiquitin protein ligase 1 targets the full-length ErbB4 for ubiquitin-mediated degradation in breast cancer. Oncogene 2009; 28:2948-58. [PMID: 19561640 DOI: 10.1038/onc.2009.162] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
ErbB4, a member of the epidermal growth factor receptor family, plays a role in normal breast and breast cancer development by regulating mammary epithelial cell proliferation, survival and differentiation. In this study, we show that WWP1, a C2-WW-HECT type E3 ubiquitin ligase, binds, ubiquitinates and destructs ErbB4-CYT1, but much less efficiently for CYT2, isoforms (both JMa and JMb). The protein-protein interaction occurs primarily between the first and third WW domains of WWP1 and the second PY motif of ErbB4. Knockdown of WWP1 by two different small interfering RNAs increases the endogenous ErbB4 protein levels in both MCF7 and T47D breast cancer cell lines. In addition, overexpression of the wild type, but not the catalytic inactive WWP1, dramatically decreases the endogenous ErbB4 protein levels in MCF7. Importantly, we found that WWP1 negatively regulates the heregulin-beta1-stimulated ErbB4 activity as measured by the serum response element report assay and the BRCA1 mRNA expression. After a systematic screening of all WWP1 family members by small interfering RNA, we found that AIP4/Itch and HECW1/NEDL1 also negatively regulate the ErbB4 protein expression in T47D. Interestingly, the protein expression levels of both WWP1 and ErbB4 are higher in estrogen receptor-alpha-positive than in estrogen receptor-alpha-negative breast cancer cell lines. These data suggest that WWP1 and its family members suppress the ErbB4 expression and function in breast cancer.
Collapse
|
13
|
Marcotte R, Muller WJ. Signal transduction in transgenic mouse models of human breast cancer--implications for human breast cancer. J Mammary Gland Biol Neoplasia 2008; 13:323-35. [PMID: 18651209 DOI: 10.1007/s10911-008-9087-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2008] [Accepted: 07/04/2008] [Indexed: 12/31/2022] Open
Abstract
The advent of genetically engineered mouse models (GEMs) of human breast cancer, have provided important insight into molecular basis or human breast cancer. This review will focus on two of the most extensively studied mouse models for human breast cancer involving mammary gland specific expression of the polyoma middle T (PyV MT) antigen and of the ErbB2. In addition, this review will discuss past and recent advances in understanding relative contribution of the signaling pathways in tumor induction and metastasis by these potent mammary oncogenes.
Collapse
Affiliation(s)
- Richard Marcotte
- Molecular Oncology Group, Royal Victoria Hospital, room H5.21, 687 Pine Avenue West, Montreal, QC, Canada H3A 1A1
| | | |
Collapse
|
14
|
Chuu CP, Chen RY, Barkinge JL, Ciaccio MF, Jones RB. Systems-level analysis of ErbB4 signaling in breast cancer: a laboratory to clinical perspective. Mol Cancer Res 2008; 6:885-91. [PMID: 18567793 DOI: 10.1158/1541-7786.mcr-07-0369] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Although expression of the ErbB4 receptor tyrosine kinase in breast cancer is generally regarded as a marker for favorable patient prognosis, controversial exceptions have been reported. Alternative splicing of ErbB4 pre-mRNAs results in the expression of distinct receptor isoforms with differential susceptibility to enzymatic cleavage and different downstream signaling protein recruitment potential that could affect tumor progression in different ways. ErbB4 protein expression from nontransfected cells is generally low compared with ErbB1 in most cell lines, and much of our knowledge of the role of ErbB4 in breast cancer is derived from the ectopic overexpression of the receptor in non-breast-derived cell lines. One of the primary functions of ErbB4 in vivo is in the maturation of mammary glands during pregnancy and lactation induction. Pregnancy and extended lactation durations have been correlated with reduced risk of breast cancer, and the role of ErbB4 in tumor suppression may therefore be linked with its role in lactation. Most reports are consistent with a role for ErbB4 in reversing growth stimuli triggered by other ErbB family members during puberty. In this report, we provide a systems-level examination of several reports highlighting the seemingly opposing roles of ErbB4 in breast cancer and potential explanations for the discrepancies and draw the conclusion that future studies examining the function of ErbB4 in breast cancer should also take into account the pregnancy history, lactation status, and hormone supplementation or ablation history of the patient from whom the tumor or tumor cells are derived.
Collapse
Affiliation(s)
- Chih-Pin Chuu
- Gordon Center for Integrative Science, W306, The University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA
| | | | | | | | | |
Collapse
|
15
|
Sundvall M, Iljin K, Kilpinen S, Sara H, Kallioniemi OP, Elenius K. Role of ErbB4 in breast cancer. J Mammary Gland Biol Neoplasia 2008; 13:259-68. [PMID: 18454307 DOI: 10.1007/s10911-008-9079-3] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2008] [Accepted: 04/02/2008] [Indexed: 11/30/2022] Open
Abstract
Members of the ErbB subfamily of receptor tyrosine kinases are important regulators of normal mammary gland physiology, and aberrations in their signaling have been associated with breast tumorigenesis. Therapeutics targeting epidermal growth factor receptor (EGFR = ErbB1) or ErbB2 in breast cancer have been approved for clinical use. In contrast, relatively little is known about the biological significance of ErbB4 signaling in breast cancer. This review focuses on recent advances in our understanding about the role of ErbB4 in breast carcinogenesis, as well as in the potential clinical relevance of ErbB4 in breast cancer prognostics and therapy.
Collapse
Affiliation(s)
- Maria Sundvall
- Department of Medical Biochemistry and Molecular Biology, University of Turku, Kiinamyllynkatu 10, 20520, Turku, Finland
| | | | | | | | | | | |
Collapse
|
16
|
Vernon AE, Bakewell SJ, Chodosh LA. Deciphering the molecular basis of breast cancer metastasis with mouse models. Rev Endocr Metab Disord 2007; 8:199-213. [PMID: 17657606 DOI: 10.1007/s11154-007-9041-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Breast cancer begins as a localized disease, but has the potential to spread to distant sites within the body. This process--known as metastasis--is the leading cause of death from breast cancer. Whether the ability of cancer cells to metastasize is an intrinsic or acquired feature is currently a topic of considerable debate. Nevertheless, the key cellular events required for metastasis are generally accepted. These include invasion of the surrounding stromal tissue, intravasation, evasion of programmed cell death, arrest within the vasculature at a distant site, extravasation, and establishment and growth within a new microenvironment. The development of mouse models that faithfully mimic critical aspects of human neoplasia has been instrumental in framing our current understanding of multistage carcinogenesis. This review examines the advantages and limitations of existing murine models for mammary carcinogenesis for probing the molecular mechanisms that contribute to metastasis, as well as non-invasive tumor imaging approaches to facilitate these investigations.
Collapse
Affiliation(s)
- Ann E Vernon
- Department of Cancer Biology, and The Abramson Family Cancer Research Institute, University of Pennsylvania School of Medicine, 612 BRB II/III, 421 Curie Boulevard, Philadelphia, PA 19104-6160, USA
| | | | | |
Collapse
|