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Bhat-Nakshatri P, Khatpe AS, Chen D, Batic K, Mang H, Herodotou C, McGuire PC, Xuei X, Erdogan C, Gao H, Liu Y, Sandusky G, Storniolo AM, Nakshatri H. Signaling Pathway Alterations Driven by BRCA1 and BRCA2 Germline Mutations are Sufficient to Initiate Breast Tumorigenesis by the PIK3CAH1047R Oncogene. CANCER RESEARCH COMMUNICATIONS 2024; 4:38-54. [PMID: 38059556 PMCID: PMC10774565 DOI: 10.1158/2767-9764.crc-23-0330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 11/09/2023] [Accepted: 12/05/2023] [Indexed: 12/08/2023]
Abstract
Single-cell transcriptomics studies have begun to identify breast epithelial cell and stromal cell specific transcriptome differences between BRCA1/2 mutation carriers and non-carriers. We generated a single-cell transcriptome atlas of breast tissues from BRCA1, BRCA2 mutation carriers and compared this single-cell atlas of mutation carriers with our previously described single-cell breast atlas of healthy non-carriers. We observed that BRCA1 but not BRCA2 mutations altered the ratio between basal (basal-myoepithelial), luminal progenitor (luminal adaptive secretory precursor, LASP), and mature luminal (luminal hormone sensing) cells in breast tissues. A unique subcluster of cells within LASP cells is underrepresented in case of BRCA1 and BRCA2 mutation carriers compared with non-carriers. Both BRCA1 and BRCA2 mutations specifically altered transcriptomes in epithelial cells which are an integral part of NFκB, LARP1, and MYC signaling. Signaling pathway alterations in epithelial cells unique to BRCA1 mutations included STAT3, BRD4, SMARCA4, HIF2A/EPAS1, and Inhibin A signaling. BRCA2 mutations were associated with upregulation of IL6, PDK1, FOXO3, and TNFSF11 signaling. These signaling pathway alterations are sufficient to alter sensitivity of BRCA1/BRCA2-mutant breast epithelial cells to transformation as epithelial cells from BRCA1 mutation carriers overexpressing hTERT + PIK3CAH1047R generated adenocarcinomas, whereas similarly modified mutant BRCA2 cells generated basal carcinomas in NSG mice. Thus, our studies provide a high-resolution transcriptome atlas of breast epithelial cells of BRCA1 and BRCA2 mutation carriers and reveal their susceptibility to PIK3CA mutation-driven transformation. SIGNIFICANCE This study provides a single-cell atlas of breast tissues of BRCA1/2 mutation carriers and demonstrates that aberrant signaling due to BRCA1/2 mutations is sufficient to initiate breast cancer by mutant PIK3CA.
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Affiliation(s)
| | - Aditi S. Khatpe
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | - Duojiao Chen
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana
| | - Katie Batic
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | - Henry Mang
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | | | - Patrick C. McGuire
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana
| | - Xiaoling Xuei
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana
| | - Cihat Erdogan
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana
| | - Hongyu Gao
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana
| | - Yunlong Liu
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana
| | - George Sandusky
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Anna Maria Storniolo
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Harikrishna Nakshatri
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana
- VA Roudebush Medical Center, Indianapolis, Indiana
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Perta N, Torrieri Di Tullio L, Cugini E, Fattibene P, Rapanotti MC, Borromeo I, Forni C, Malaspina P, Cacciamani T, Di Marino D, Rossi L, De Luca A. Hydroxytyrosol Counteracts Triple Negative Breast Cancer Cell Dissemination via Its Copper Complexing Properties. BIOLOGY 2023; 12:1437. [PMID: 37998036 PMCID: PMC10669715 DOI: 10.3390/biology12111437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/09/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023]
Abstract
Polyphenols have gained increasing attention for their therapeutic potential, particularly in conditions like cancer, due to their established antioxidant and anti-inflammatory properties. Recent research highlights their ability to bind to transition metals, such as copper. This is particularly noteworthy given the key role of copper both in the initiation and progression of cancer. Copper can modulate the activity of kinases required for the epithelial-mesenchymal transition (EMT), a process fundamental to tumor cell dissemination. We have previously demonstrated the copper-binding capacity of oleuropein, a secoiridoid found in Olea europaea. In the present study, we investigated the effect of hydroxytyrosol, the primary oleuropein metabolite, on the metastatic potential of three triple-negative breast cancer cell lines (MDA-MB-231, MDA-MB-468, and SUM159). We found that hydroxytyrosol modulated the intracellular copper levels, influencing both the epithelial and mesenchymal markers, by downregulating copper-dependent AKT phosphorylation, a member of the EMT signaling cascade, through Western blot, RT-qPCR, and immunofluorescence. Indeed, by optical spectra, EPR, and in silico approaches, we found that hydroxytyrosol formed a complex with copper, acting as a chelating agent, thus regulating its homeostasis and affecting the copper-dependent signaling cascades. While our results bring to light the copper-chelating properties of hydroxytyrosol capable of countering tumor progression, they also provide further confirmation of the key role of copper in promoting the aggressiveness of triple-negative breast cancer cells.
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Affiliation(s)
- Nunzio Perta
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy; (N.P.); (T.C.); (D.D.M.)
- New York-Marche Structural Biology Center (NY-MaSBiC), Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - Laura Torrieri Di Tullio
- Istituto Superiore di Sanità, Core Facilities, Viale Regina Elena, 299, 00185 Rome, Italy; (L.T.D.T.); (P.F.)
- PhD School in Biochemistry, Department of Biochemical Sciences “A. Rossi Fanelli”, University of Rome “Sapienza”, Viale Regina Elena, 332, 00185 Rome, Italy
| | - Elisa Cugini
- Department of Laboratory Medicine, University of Rome Tor Vergata, Viale Oxford, 8, 00133 Rome, Italy; (E.C.); (M.C.R.)
| | - Paola Fattibene
- Istituto Superiore di Sanità, Core Facilities, Viale Regina Elena, 299, 00185 Rome, Italy; (L.T.D.T.); (P.F.)
| | - Maria Cristina Rapanotti
- Department of Laboratory Medicine, University of Rome Tor Vergata, Viale Oxford, 8, 00133 Rome, Italy; (E.C.); (M.C.R.)
| | - Ilaria Borromeo
- PhD School in Evolutionary Biology and Ecology, Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy;
| | - Cinzia Forni
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy; (C.F.); (P.M.); (L.R.)
| | - Patrizia Malaspina
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy; (C.F.); (P.M.); (L.R.)
| | - Tiziana Cacciamani
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy; (N.P.); (T.C.); (D.D.M.)
- New York-Marche Structural Biology Center (NY-MaSBiC), Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - Daniele Di Marino
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy; (N.P.); (T.C.); (D.D.M.)
- New York-Marche Structural Biology Center (NY-MaSBiC), Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
- Neuronal Death and Neuroprotection Unit, Department of Neuroscience, Mario Negri Institute for Pharmacological Research-IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Luisa Rossi
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy; (C.F.); (P.M.); (L.R.)
| | - Anastasia De Luca
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy; (C.F.); (P.M.); (L.R.)
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Bhatia S, Gunter JH, Burgess JT, Adams MN, O'Byrne K, Thompson EW, Duijf PH. Stochastic epithelial-mesenchymal transitions diversify non-cancerous lung cell behaviours. Transl Oncol 2023; 37:101760. [PMID: 37611490 PMCID: PMC10466920 DOI: 10.1016/j.tranon.2023.101760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/23/2023] [Accepted: 08/07/2023] [Indexed: 08/25/2023] Open
Abstract
Epithelial-mesenchymal plasticity (EMP) is a hallmark of cancer. By enabling cells to shift between different morphological and functional states, EMP promotes invasion, metastasis and therapy resistance. We report that near-diploid non-cancerous human epithelial lung cells spontaneously shift along the EMP spectrum without genetic changes. Strikingly, more than half of single cell-derived clones adopt a mesenchymal morphology. We independently characterise epithelial-like and mesenchymal-like clones. Mesenchymal clones lose epithelial markers, display larger cell aspect ratios and lower motility, with mostly unaltered proliferation rates. Stemness marker expression and metabolic rewiring diverge independently of phenotypes. In 3D culture, more epithelial clones become mesenchymal-like. Thus, non-cancerous epithelial cells may acquire cancer metastasis-associated features prior to genetic alterations and cancerous transformation.
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Affiliation(s)
- Sugandha Bhatia
- Queensland University of Technology (QUT), School of Biomedical Sciences, Centre for Genomics and Personalised Health at the Translational Research Institute, Woolloongabba 4102, QLD, Australia.
| | - Jennifer H Gunter
- Queensland University of Technology (QUT), School of Biomedical Sciences, Centre for Genomics and Personalised Health at the Translational Research Institute, Woolloongabba 4102, QLD, Australia; Australian Prostate Cancer Research Centre-Queensland (APCRC-Q), Queensland University of Technology, Woolloongabba 4102, Australia
| | - Joshua T Burgess
- Queensland University of Technology (QUT), School of Biomedical Sciences, Centre for Genomics and Personalised Health at the Translational Research Institute, Woolloongabba 4102, QLD, Australia
| | - Mark N Adams
- Queensland University of Technology (QUT), School of Biomedical Sciences, Centre for Genomics and Personalised Health at the Translational Research Institute, Woolloongabba 4102, QLD, Australia
| | - Kenneth O'Byrne
- Queensland University of Technology (QUT), School of Biomedical Sciences, Centre for Genomics and Personalised Health at the Translational Research Institute, Woolloongabba 4102, QLD, Australia; Princess Alexandra Hospital, Woolloongabba 4102, QLD, Australia
| | - Erik W Thompson
- Queensland University of Technology (QUT), School of Biomedical Sciences, Centre for Genomics and Personalised Health at the Translational Research Institute, Woolloongabba 4102, QLD, Australia
| | - Pascal Hg Duijf
- Queensland University of Technology (QUT), School of Biomedical Sciences, Centre for Genomics and Personalised Health at the Translational Research Institute, Woolloongabba 4102, QLD, Australia; Centre for Cancer Biology, Clinical and Health Sciences, University of South Australia and SA Pathology, Adelaide SA, 5001, Australia; Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway; Department of Medical Genetics, Oslo University Hospital, Oslo, Norway.
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Zhang L. The Role of Mesenchymal Stem Cells in Modulating the Breast Cancer Microenvironment. Cell Transplant 2023; 32:9636897231220073. [PMID: 38135917 DOI: 10.1177/09636897231220073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023] Open
Abstract
The role of mesenchymal stem cells (MSCs) in the breast tumor microenvironment (TME) is significant and multifaceted. MSCs are recruited to breast tumor sites through molecular signals released by tumor sites. Once in the TME, MSCs undergo polarization and interact with various cell populations, including immune cells, cancer-associated fibroblasts (CAFs), cancer stem cells (CSCs), and breast cancer cells. In most cases, MSCs play roles in breast cancer therapeutic resistance, but there is also evidence that indicates their abilities to sensitize cancer cells to chemotherapy and radiotherapy. MSCs possess inherent regenerative and homing properties, making them attractive candidates for cell-based therapies. Therefore, MSCs can be engineered to express therapeutic molecules or deliver anti-cancer agents directly to tumor sites. Unraveling the intricate relationship between MSCs and the breast TME has the potential to uncover novel therapeutic targets and advance our understanding of breast cancer biology.
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Affiliation(s)
- Luxiao Zhang
- Department of Surgical Oncology, Central Hospital Affiliated to Shandong First Medical University, Jinan, China
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