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Vemuri K, de Alves Pereira B, Fuenzalida P, Subashi Y, Barbera S, van Hooren L, Hedlund M, Pontén F, Lindskog C, Olsson AK, Lugano R, Dimberg A. CD93 maintains endothelial barrier function and limits metastatic dissemination. JCI Insight 2024; 9:e169830. [PMID: 38441970 PMCID: PMC11128212 DOI: 10.1172/jci.insight.169830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 02/27/2024] [Indexed: 03/07/2024] Open
Abstract
Compromised vascular integrity facilitates extravasation of cancer cells and promotes metastatic dissemination. CD93 has emerged as a target for antiangiogenic therapy, but its importance for vascular integrity in metastatic cancers has not been evaluated. Here, we demonstrate that CD93 participates in maintaining the endothelial barrier and reducing metastatic dissemination. Primary melanoma growth was hampered in CD93-/- mice, but metastatic dissemination was increased and associated with disruption of adherens and tight junctions in tumor endothelial cells and elevated expression of matrix metalloprotease 9 at the metastatic site. CD93 directly interacted with vascular endothelial growth factor receptor 2 (VEGFR2) and its absence led to VEGF-induced hyperphosphorylation of VEGFR2 in endothelial cells. Antagonistic anti-VEGFR2 antibody therapy rescued endothelial barrier function and reduced the metastatic burden in CD93-/- mice to wild-type levels. These findings reveal a key role of CD93 in maintaining vascular integrity, which has implications for pathological angiogenesis and endothelial barrier function in metastatic cancer.
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Affiliation(s)
- Kalyani Vemuri
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, and
| | - Beatriz de Alves Pereira
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, and
| | - Patricia Fuenzalida
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, and
| | - Yelin Subashi
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, and
| | - Stefano Barbera
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, and
| | - Luuk van Hooren
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, and
| | - Marie Hedlund
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, and
| | - Fredrik Pontén
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, and
| | - Cecilia Lindskog
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, and
| | - Anna-Karin Olsson
- Department of Medical Biochemistry and Microbiology, Uppsala University Biomedical Center, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Roberta Lugano
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, and
| | - Anna Dimberg
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, and
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2
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Bonni S, Brindley DN, Chamberlain MD, Daneshvar-Baghbadorani N, Freywald A, Hemmings DG, Hombach-Klonisch S, Klonisch T, Raouf A, Shemanko CS, Topolnitska D, Visser K, Vizeacoumar FJ, Wang E, Gibson SB. Breast Tumor Metastasis and Its Microenvironment: It Takes Both Seed and Soil to Grow a Tumor and Target It for Treatment. Cancers (Basel) 2024; 16:911. [PMID: 38473273 DOI: 10.3390/cancers16050911] [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: 01/09/2024] [Revised: 02/12/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
Metastasis remains a major challenge in treating breast cancer. Breast tumors metastasize to organ-specific locations such as the brain, lungs, and bone, but why some organs are favored over others remains unclear. Breast tumors also show heterogeneity, plasticity, and distinct microenvironments. This contributes to treatment failure and relapse. The interaction of breast cancer cells with their metastatic microenvironment has led to the concept that primary breast cancer cells act as seeds, whereas the metastatic tissue microenvironment (TME) is the soil. Improving our understanding of this interaction could lead to better treatment strategies for metastatic breast cancer. Targeted treatments for different subtypes of breast cancers have improved overall patient survival, even with metastasis. However, these targeted treatments are based upon the biology of the primary tumor and often these patients' relapse, after therapy, with metastatic tumors. The advent of immunotherapy allowed the immune system to target metastatic tumors. Unfortunately, immunotherapy has not been as effective in metastatic breast cancer relative to other cancers with metastases, such as melanoma. This review will describe the heterogeneic nature of breast cancer cells and their microenvironments. The distinct properties of metastatic breast cancer cells and their microenvironments that allow interactions, especially in bone and brain metastasis, will also be described. Finally, we will review immunotherapy approaches to treat metastatic breast tumors and discuss future therapeutic approaches to improve treatments for metastatic breast cancer.
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Affiliation(s)
- Shirin Bonni
- Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, AB T2N 4N1, Canada
- The Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - David N Brindley
- Department of Biochemistry, University of Alberta, Edmonton, AB T6G 2H7, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - M Dean Chamberlain
- Division of Oncology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0W8, Canada
- Saskatchewan Cancer Agency, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Nima Daneshvar-Baghbadorani
- Division of Oncology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0W8, Canada
- Saskatchewan Cancer Agency, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Andrew Freywald
- Department of Pathology, Laboratory Medicine, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Denise G Hemmings
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, AB T6G 2E1, Canada
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, AB T6G 2S2, Canada
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB T6G 2E1, Canada
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Sabine Hombach-Klonisch
- Department of Human Anatomy and Cell Science, Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Thomas Klonisch
- Department of Human Anatomy and Cell Science, Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Afshin Raouf
- Department of Immunology, Faculty of Medicine, University of Manitoba, Winnipeg, MB R3E OT5, Canada
- Cancer Care Manitoba Research Institute, Cancer Care Manitoba, Winnipeg, MB R3E OV9, Canada
| | - Carrie Simone Shemanko
- The Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, AB T2N 4N1, Canada
- Department of Biological Sciences, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada
| | - Diana Topolnitska
- Department of Immunology, Faculty of Medicine, University of Manitoba, Winnipeg, MB R3E OT5, Canada
- Cancer Care Manitoba Research Institute, Cancer Care Manitoba, Winnipeg, MB R3E OV9, Canada
| | - Kaitlyn Visser
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, AB T6G 2E1, Canada
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, AB T6G 2S2, Canada
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB T6G 2E1, Canada
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Franco J Vizeacoumar
- Division of Oncology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0W8, Canada
- Saskatchewan Cancer Agency, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Edwin Wang
- Department of Biochemistry and Molecular Biology, Medical Genetics, and Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Spencer B Gibson
- Department of Oncology, University of Alberta, Edmonton, AB T6G 2R3, Canada
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3
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The Tumor Microenvironment in Tumorigenesis and Therapy Resistance Revisited. Cancers (Basel) 2023; 15:cancers15020376. [PMID: 36672326 PMCID: PMC9856874 DOI: 10.3390/cancers15020376] [Citation(s) in RCA: 48] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/28/2022] [Accepted: 01/04/2023] [Indexed: 01/09/2023] Open
Abstract
Tumorigenesis is a complex and dynamic process involving cell-cell and cell-extracellular matrix (ECM) interactions that allow tumor cell growth, drug resistance and metastasis. This review provides an updated summary of the role played by the tumor microenvironment (TME) components and hypoxia in tumorigenesis, and highlight various ways through which tumor cells reprogram normal cells into phenotypes that are pro-tumorigenic, including cancer associated- fibroblasts, -macrophages and -endothelial cells. Tumor cells secrete numerous factors leading to the transformation of a previously anti-tumorigenic environment into a pro-tumorigenic environment. Once formed, solid tumors continue to interact with various stromal cells, including local and infiltrating fibroblasts, macrophages, mesenchymal stem cells, endothelial cells, pericytes, and secreted factors and the ECM within the tumor microenvironment (TME). The TME is key to tumorigenesis, drug response and treatment outcome. Importantly, stromal cells and secreted factors can initially be anti-tumorigenic, but over time promote tumorigenesis and induce therapy resistance. To counter hypoxia, increased angiogenesis leads to the formation of new vascular networks in order to actively promote and sustain tumor growth via the supply of oxygen and nutrients, whilst removing metabolic waste. Angiogenic vascular network formation aid in tumor cell metastatic dissemination. Successful tumor treatment and novel drug development require the identification and therapeutic targeting of pro-tumorigenic components of the TME including cancer-associated- fibroblasts (CAFs) and -macrophages (CAMs), hypoxia, blocking ECM-receptor interactions, in addition to the targeting of tumor cells. The reprogramming of stromal cells and the immune response to be anti-tumorigenic is key to therapeutic success. Lastly, this review highlights potential TME- and hypoxia-centered therapies under investigation.
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Ippolitov D, Arreza L, Munir MN, Hombach-Klonisch S. Brain Microvascular Pericytes—More than Bystanders in Breast Cancer Brain Metastasis. Cells 2022; 11:cells11081263. [PMID: 35455945 PMCID: PMC9028330 DOI: 10.3390/cells11081263] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/06/2022] [Accepted: 04/06/2022] [Indexed: 01/27/2023] Open
Abstract
Brain tissue contains the highest number of perivascular pericytes compared to other organs. Pericytes are known to regulate brain perfusion and to play an important role within the neurovascular unit (NVU). The high phenotypic and functional plasticity of pericytes make this cell type a prime candidate to aid physiological adaptations but also propose pericytes as important modulators in diverse pathologies in the brain. This review highlights known phenotypes of pericytes in the brain, discusses the diverse markers for brain pericytes, and reviews current in vitro and in vivo experimental models to study pericyte function. Our current knowledge of pericyte phenotypes as it relates to metastatic growth patterns in breast cancer brain metastasis is presented as an example for the crosstalk between pericytes, endothelial cells, and metastatic cells. Future challenges lie in establishing methods for real-time monitoring of pericyte crosstalk to understand causal events in the brain metastatic process.
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Affiliation(s)
- Danyyl Ippolitov
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3E 0J9, Canada; (D.I.); (L.A.); (M.N.M.)
| | - Leanne Arreza
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3E 0J9, Canada; (D.I.); (L.A.); (M.N.M.)
| | - Maliha Nuzhat Munir
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3E 0J9, Canada; (D.I.); (L.A.); (M.N.M.)
| | - Sabine Hombach-Klonisch
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3E 0J9, Canada; (D.I.); (L.A.); (M.N.M.)
- Department of Pathology, University of Manitoba, Winnipeg, MB R3E 0Z2, Canada
- Correspondence:
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Babak MV, Zalutsky MR, Balyasnikova IV. Heterogeneity and vascular permeability of breast cancer brain metastases. Cancer Lett 2020; 489:174-181. [PMID: 32561415 DOI: 10.1016/j.canlet.2020.06.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/09/2020] [Accepted: 06/12/2020] [Indexed: 12/13/2022]
Abstract
Improvements in the diagnosis and treatment of systemic breast cancer have led to a prolongation in patient survival. Unfortunately, these advances are also associated with an increased incidence of brain metastases (BM), with the result that many patients succumb due to BM treatment failure. Intracranial delivery of many chemotherapeutic agents and other therapeutics is hindered by the presence of an impermeable blood-brain barrier (BBB) designed to protect the brain from harmful substances. The formation of BM compromises the integrity of the BBB, resulting in a highly heterogeneous blood-tumor barrier (BTB) with varying degrees of vascular permeability. Here, we discuss how blood vessels play an important role in the formation of brain micrometastases as well as in the transformation from poorly permeable BM to highly permeable BM. We then review the role of BTB vascular permeability in the diagnostics and the choice of treatment regimens for breast cancer brain metastases (BCBM) and discuss whether the vasculature of primary breast cancers can serve as a biomarker for BM. Specifically, we examine the association between the vascular permeability of BCBM and their accumulation of large molecules such as antibodies, which remains largely unexplored.
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Affiliation(s)
- Maria V Babak
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR, 999077, People's Republic of China
| | - Michael R Zalutsky
- Department of Radiology, Duke University Medical Center; 311 Research Drive, Box 3808, Durham, NC, 27710, USA
| | - Irina V Balyasnikova
- Department of Neurological Surgery, The Feinberg School of Medicine, 303 E. Superior Street, Northwestern University, Chicago, IL, 60611, USA.
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