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Rajendran S, Swaroop SS, Roy J, Inemai E, Murugan S, Rayala SK, Venkatraman G. p21 activated kinase-1 and tamoxifen - A deadly nexus impacting breast cancer outcomes. Biochim Biophys Acta Rev Cancer 2021; 1877:188668. [PMID: 34896436 DOI: 10.1016/j.bbcan.2021.188668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 12/03/2021] [Accepted: 12/03/2021] [Indexed: 12/18/2022]
Abstract
Tamoxifen is a commonly used drug in the treatment of ER + ve breast cancers since 1970. However, development of resistance towards tamoxifen limits its remarkable clinical success. In this review, we have attempted to provide a brief overview of multiple mechanism that may lead to tamoxifen resistance, with a special emphasis on the roles played by the oncogenic kinase- PAK1. Analysing the genomic data sets available in the cBioPortal, we found that PAK1 gene amplification significantly affects the Relapse Free Survival of the ER + ve breast cancer patients. While PAK1 is known to promote tamoxifen resistance by phosphorylating ERα at Ser305, existing literature suggests that PAK1 can fuel up tamoxifen resistance obliquely by phosphorylating other substrates. We have summarised some of the approaches in the mass spectrometry based proteomics, which would enable us to study the tamoxifen resistance specific phosphoproteomic landscape of PAK1. We also propose that elucidating the multiple mechanisms by which PAK1 promotes tamoxifen resistance might help us discover druggable targets and biomarkers.
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Affiliation(s)
- Swetha Rajendran
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences and Technology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Srikanth Swamy Swaroop
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences and Technology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Joydeep Roy
- Department of Biotechnology, Indian Institute of Technology, Madras, Chennai, India
| | - Ezhil Inemai
- Department of Biotechnology, Indian Institute of Technology, Madras, Chennai, India
| | - Sowmiya Murugan
- Department of Biotechnology, Indian Institute of Technology, Madras, Chennai, India
| | - Suresh K Rayala
- Department of Biotechnology, Indian Institute of Technology, Madras, Chennai, India.
| | - Ganesh Venkatraman
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences and Technology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India.
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Dal Berto M, Dos Santos GT, Dos Santos AV, Silva AO, Vargas JE, Alves RJV, Barbisan F, da Cruz IBM, Bica CG. Molecular markers associated with the outcome of tamoxifen treatment in estrogen receptor-positive breast cancer patients: scoping review and in silico analysis. Discov Oncol 2021; 12:37. [PMID: 35201456 PMCID: PMC8777552 DOI: 10.1007/s12672-021-00432-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 09/09/2021] [Indexed: 11/17/2022] Open
Abstract
Tamoxifen (TMX) is used as adjuvant therapy for estrogen receptor-positive (ER+) breast cancer cases due to its affinity and inhibitory effects. However, about 30% of cases show drug resistance, resulting in recurrence and metastasis, the leading causes of death. A literature review can help to elucidate the main cellular processes involved in TMX resistance. A scoping review was performed to find clinical studies investigating the association of expression of molecular markers profiles with long-term outcomes in ER+ patients treated with TMX. In silico analysis was performed to assess the interrelationship among the selected markers, evaluating the joint involvement with the biological processes. Forty-five studies were selected according to the inclusion and exclusion criteria. After clustering and gene ontology analysis, 23 molecular markers were significantly associated, forming three clusters of strong correlation with cell cycle regulation, signal transduction of proliferative stimuli, and hormone response involved in morphogenesis and differentiation of mammary gland. Also, it was found that overexpression of markers in selected clusters is a significant indicator of poor overall survival. The proposed review offered a better understanding of independent data from the literature, revealing an integrative network of markers involved in cellular processes that could modulate the response of TMX. Analysis of these mechanisms and their molecular components could improve the effectiveness of TMX.
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Affiliation(s)
- Maiquidieli Dal Berto
- Laboratory of Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA), 245,Sarmento Leite street, Porto Alegre, RS, 90050-170, Brazil
| | - Giovana Tavares Dos Santos
- Laboratory of Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA), 245,Sarmento Leite street, Porto Alegre, RS, 90050-170, Brazil
| | - Aniúsca Vieira Dos Santos
- Laboratory of Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA), 245,Sarmento Leite street, Porto Alegre, RS, 90050-170, Brazil
| | - Andrew Oliveira Silva
- Laboratory of Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA), 245,Sarmento Leite street, Porto Alegre, RS, 90050-170, Brazil
| | - José Eduardo Vargas
- Institute of Biological Sciences, University of Passo Fundo (UPF), 285, Brazil Avenue, Passo Fundo, RS, 99052-900, Brazil
| | - Rafael José Vargas Alves
- Department of Clinical Medicine, Federal University of Health Sciences of Porto Alegre (UFCSPA), 245, Sarmento Leite street, Porto Alegre, RS, 90050-170, Brazil
| | - Fernanda Barbisan
- Graduate Program in Gerontology, Federal University of Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | | | - Claudia Giuliano Bica
- Department of Basic Health Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), 245, Sarmento Leite street., Porto Alegre, RS, 90050-170, Brazil.
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Liposomes Targeting P21 Activated Kinase-1 (PAK-1) and Selective for Secretory Phospholipase A 2 (sPLA 2) Decrease Cell Viability and Induce Apoptosis in Metastatic Triple-Negative Breast Cancer Cells. Int J Mol Sci 2020; 21:ijms21249396. [PMID: 33321758 PMCID: PMC7764208 DOI: 10.3390/ijms21249396] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 12/12/2022] Open
Abstract
P21 activated kinases (or group I PAKs) are serine/threonine kinases whose expression is altered in prostate and breast cancers. PAK-1 activity is inhibited by the small molecule "Inhibitor targeting PAK-1 activation-3" (IPA-3), which has selectivity for PAK-1 but is metabolically unstable. Secretory Group IIA phospholipase A2 (sPLA2) expression correlates to increased metastasis and decreased survival in many cancers. We previously designed novel liposomal formulations targeting both PAK-1 and sPLA2, called Secretory Phospholipase Responsive liposomes or SPRL-IPA-3, and demonstrated their ability to alter prostate cancer growth. The efficacy of SPRL against other types of cancers is not well understood. We addressed this limitation by determining the ability of SPRL to induce cell death in a diverse panel of cells representing different stages of breast cancer, including the invasive but non-metastatic MCF-7 cells, and metastatic triple-negative breast cancer (TNBC) cells such as MDA-MB-231, MDA-MB-468, and MDA-MB-435. We investigated the role of sPLA2 in the disposition of these liposomes by comparing the efficacy of SPRL-IPA-3 to IPA-3 encapsulated in sterically stabilized liposomes (SSL-IPA-3), a formulation shown to be less sensitive to sPLA2. Both SSL-IPA-3 and SPRL-IPA-3 induced time- and dose-dependent decreases in MTT staining in all cell lines tested, but SPRL-IPA-3-induced effects in metastatic TNBC cell lines were superior over SSL-IPA-3. The reduction in MTT staining induced by SPRL-IPA-3 correlated to the expression of Group IIA sPLA2. sPLA2 expression also correlated to increased induction of apoptosis in TNBC cell lines by SPRL-IPA-3. These data suggest that SPRL-IPA-3 is selective for metastatic TNBC cells and that the efficacy of SPRL-IPA-3 is mediated, in part, by the expression of Group IIA sPLA2.
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Hjorth CF, Nielsen AS, Sørensen HT, Lash TL, Damkier P, Hamilton-Dutoit S, Cronin-Fenton D. Multi-drug resistance protein 2 (MRP2) expression, adjuvant tamoxifen therapy, and risk of breast cancer recurrence: a Danish population-based nested case-control study. Acta Oncol 2019; 58:168-174. [PMID: 30458661 DOI: 10.1080/0284186x.2018.1537508] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND Adjuvant tamoxifen therapy approximately halves the risk of recurrence in estrogen receptor-positive (ER+) breast cancer patients, but many women respond insufficiently to therapy. Expression of multi-drug resistance protein 2 (MRP2) in breast cancer may potentiate tamoxifen resistance. Thus, we investigated the expression of MRP2 in breast cancer as a predictor of tamoxifen therapy effectiveness. MATERIAL AND METHODS We conducted a case-control study nested in the Danish Breast Cancer Group clinical database. The study included women aged 35-69 years diagnosed with stage l-lll breast cancer during 1985-2001, in Jutland, Denmark. We identified 541 recurrent breast cancers (cases) among women with estrogen receptor positive (ER+) disease treated with tamoxifen for at least 1 year (ER+/TAM+) and 300 cases among women with estrogen receptor-negative (ER-) disease, never treated with tamoxifen (ER-/TAM-). We matched one recurrence-free control to each recurrent case. We retrieved paraffin-embedded primary tumor tissue for all patients, and all available recurrent tumor tissue from pathology archives. MRP2 expression was evaluated using immunohistochemistry. We computed odds ratios (ORs) and 95% confidence intervals (95% CIs) associating MRP2 expression (positive vs. none) with breast cancer recurrence in conditional logistic regression models. We compared MRP2 expression in paired primary- and recurrent tumors. RESULTS MRP2 expression was more prevalent in the ER+/TAM + group, than in the ER-/TAM - group. No predictive utility of MRP2 for breast cancer recurrence was found in the ER+/TAM + group (ORadj = 0.96, 95% CI 0.70, 1.33). Further, no prognostic utility was found in the ER-/TAM - group (ORadj = 0.81, 95% CI 0.53, 1.23). MRP2 expression was not increased in recurrent versus primary tumors. CONCLUSIONS MRP2 expression is neither a predictive marker of tamoxifen effectiveness nor a prognostic marker in breast cancer.
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Affiliation(s)
- Cathrine F. Hjorth
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Anja S. Nielsen
- Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
| | - Henrik T. Sørensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Timothy L. Lash
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Epidemiology, Rollins School of Public Health, and Winship Cancer Institute, Emory University, Atlanta, USA
| | - Per Damkier
- Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
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