Regulatory T cells: Their role in triple‐negative breast cancer progression and metastasis. Issue 6 (6th January 2022)

• Record Type: Journal Article
• Authors: Malla, Rama Rao; Vasudevaraju, Padmaraju; Vempati, Rahul Kumar; Rakshmitha, Marni; Merchant, Neha; Nagaraju, Ganji Purnachandra
• Is Part Of: Cancer. Volume 128:Issue 6(2022)
• Page Start: 1171
• Page End: 1183
• Publication Date: 2022-01-06
• Subjects: inhibitors -- therapeutics -- T‐regulatory cells (Tregs) -- triple‐negative breast cancer (TNBC) -- tumor microenvironment; Cancer -- Periodicals; Cancer -- Cytopathology -- Periodicals; 616.99405
• DOI: 10.1002/cncr.34084
• Languages: English
• ISSNs: 0008-543X

Abstract

Abstract : Triple‐negative breast cancer (TNBC) is an aggressive and immunogenic subtype of breast cancer. This tumorigenicity is independent of hormonal or HER2 pathways because of a lack of respective receptor expression. TNBC is extremely prone to drug resistance and early recurrence because of T‐regulatory cell (Treg) infiltration into the tumor microenvironment (TME) in addition to other mechanisms like genomic instability. Tumor‐infiltrating Tregs interact with both tumor and stromal cells as well as extracellular matrix components in the TME and induce an immune‐suppressive phenotype. Hence, treatment of TNBC with conventional therapies remains challenging. Understanding the protective mechanism of Tregs in shielding TNBC from antitumor immune responses in the TME will pave the way for developing novel, immune‐based therapeutics. The current review focuses on the role of tumor‐infiltrating Tregs in tumor progression and metabolic reprogramming of the TME. The authors have extended their focus to oncotargeting Treg‐mediated immune suppression in breast cancer. Because of its potential role in the TME, modulating Treg activity may provide a novel strategic intervention to combat TNBC. Both under laboratory conditions and in clinical trials, currently available anticancer drugs and natural therapeutics as potential agents for targeting Tregs are explored. Abstract : T‐regulatory cells promote triple‐negative breast cancer (TNBC) progression and are involved in metabolic reprogramming of the TNBC microenvironment. T‐regulatory cells exhibit diagnostic and prognostic potential as a TNBC biomarker.