1
|
Thomas JA, Gireesh Moly AG, Xavier H, Suboj P, Ladha A, Gupta G, Singh SK, Palit P, Babykutty S. Enhancement of immune surveillance in breast cancer by targeting hypoxic tumor endothelium: Can it be an immunological switch point? Front Oncol 2023; 13:1063051. [PMID: 37056346 PMCID: PMC10088512 DOI: 10.3389/fonc.2023.1063051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 02/17/2023] [Indexed: 03/30/2023] Open
Abstract
Breast cancer ranks second among the causes of cancer-related deaths in women. In spite of the recent advances achieved in the diagnosis and treatment of breast cancer, further study is required to overcome the risk of cancer resistance to treatment and thereby improve the prognosis of individuals with advanced-stage breast cancer. The existence of a hypoxic microenvironment is a well-known event in the development of mutagenesis and rapid proliferation of cancer cells. Tumor cells, purposefully cause local hypoxia in order to induce angiogenesis and growth factors that promote tumor growth and metastatic characteristics, while healthy tissue surrounding the tumor suffers damage or mutate. It has been found that these settings with low oxygen levels cause immunosuppression and a lack of immune surveillance by reducing the activation and recruitment of tumor infiltrating leukocytes (TILs). The immune system is further suppressed by hypoxic tumor endothelium through a variety of ways, which creates an immunosuppressive milieu in the tumor microenvironment. Non responsiveness of tumor endothelium to inflammatory signals or endothelial anergy exclude effector T cells from the tumor milieu. Expression of endothelial specific antigens and immunoinhibitory molecules like Programmed death ligand 1,2 (PDL-1, 2) and T cell immunoglobulin and mucin-domain containing-3 (TIM-3) by tumor endothelium adds fuel to the fire by inhibiting T lymphocytes while promoting regulatory T cells. The hypoxic microenvironment in turn recruits Myeloid Derived Suppressor Cells (MDSCs), Tumor Associated Macrophages (TAMs) and T regulatory cells (Treg). The structure and function of newly generated blood vessels within tumors, on the other hand, are aberrant, lacking the specific organization of normal tissue vasculature. Vascular normalisation may work for a variety of tumour types and show to be an advantageous complement to immunotherapy for improving tumour access. By enhancing immune response in the hypoxic tumor microenvironment, via immune-herbal therapeutic and immune-nutraceuticals based approaches that leverage immunological evasion of tumor, will be briefly reviewed in this article. Whether these tactics may be the game changer for emerging immunological switch point to attenuate the breast cancer growth and prevent metastatic cell division, is the key concern of the current study.
Collapse
Affiliation(s)
- Juvin Ann Thomas
- Centre for Tumor Immunology and Microenvironment, Department of Zoology, Mar Ivanios College, Nalanchira, Thiruvananthapuram, Kerala, India
| | - Athira Gireesh Gireesh Moly
- Centre for Tumor Immunology and Microenvironment, Department of Zoology, Mar Ivanios College, Nalanchira, Thiruvananthapuram, Kerala, India
| | - Hima Xavier
- Centre for Tumor Immunology and Microenvironment, Department of Zoology, Mar Ivanios College, Nalanchira, Thiruvananthapuram, Kerala, India
| | - Priya Suboj
- Department of Botany and Biotechnology, St. Xaviers College, Thumba, Thiruvananthapuram, Kerala, India
| | - Amit Ladha
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham, West-Midlands, United Kingdom
| | - Gaurav Gupta
- Department of Immunology, University of Manitoba, Winnipeg, MB, Canada
| | - Santosh Kumar Singh
- Centre of Experimental Medicine and Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Partha Palit
- Drug Discovery Research Laboratory, Assam University, Silchar, Department of Pharmaceutical Sciences, Assam, India
| | - Suboj Babykutty
- Centre for Tumor Immunology and Microenvironment, Department of Zoology, Mar Ivanios College, Nalanchira, Thiruvananthapuram, Kerala, India
| |
Collapse
|