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The Expression of CTLA-4 in Breast Tumors and Tumor-Infiltrating Leukocytes Affects Patients’ Systemic Inflammatory Status and Varies According to Their Molecular Subtypes

Recent evidence has pointed out that the cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) expression is a poor prognosis factor. However, the implications of CTLA-4 expression on circulating inflammatory mediators are unclear for breast cancer. Tumor biopsies and blood samples were collected fro...

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Published in:Inflammation 2023-10, Vol.46 (5), p.1639-1652
Main Authors: Kern, Rodrigo, da Silva, Janaina Carla, Negretti, Fábio, Ferreira, Mariane Okamoto, Coletto, Matheus Iago Oliveira, de Oliveira, Stefania Tagliari, Alves, Fernanda Mara, Scandolara, Thalita Basso, Rech, Daniel, Panis, Carolina
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description Recent evidence has pointed out that the cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) expression is a poor prognosis factor. However, the implications of CTLA-4 expression on circulating inflammatory mediators are unclear for breast cancer. Tumor biopsies and blood samples were collected from 117 breast cancer patients. Oxidative stress parameters were evaluated in plasma samples by measuring the lipoperoxidation profile and nitric oxide metabolites (NOx). Interleukins 12 (IL-12) and 4 (IL-4) were assessed by ELISA. CTLA-4 expression was determined by immunofluorescence assessed by its labeling in tumor-infiltrating leukocytes (TILs) or breast tumors. Correlations between CTLA-4 expression in breast tumors with TCD4/TCD8 infiltrating lymphocyte and inflammation-related genes were performed using data from TIMER 2.0/TCGA databases ( n  = 2160). CTLA-4 expression in TILs significantly correlated to triple-negative breast tumors. Patients carrying CTLA-4-positive tumors exhibited lower plasmatic NOx levels, and those expressing CTLA-4 in TILs had reduced levels of IL-12 in plasma. No changes in either IL-4 or lipid peroxidation profiles were detected concerning any CTLA4 status. Compared to the Luminal A ones, oxidative stress parameters and cytokines were observed in patients bearing triple-negative tumors. CTLA-4 expression in all breast cancer subtypes positively correlated to TCD4/TCD8 lymphocyte infiltrates, as well as to the pro-inflammatory genes IL12A, IL4, NFKB1, NFKB2, NOS1, NOS2, and NOS3. CTLA-4 expression in both tumor and TILs can affect the systemic inflammatory status of breast cancer patients, especially antitumor molecules such as IL-12 and NOx that correlate to more aggressive disease.
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No changes in either IL-4 or lipid peroxidation profiles were detected concerning any CTLA4 status. Compared to the Luminal A ones, oxidative stress parameters and cytokines were observed in patients bearing triple-negative tumors. CTLA-4 expression in all breast cancer subtypes positively correlated to TCD4/TCD8 lymphocyte infiltrates, as well as to the pro-inflammatory genes IL12A, IL4, NFKB1, NFKB2, NOS1, NOS2, and NOS3. CTLA-4 expression in both tumor and TILs can affect the systemic inflammatory status of breast cancer patients, especially antitumor molecules such as IL-12 and NOx that correlate to more aggressive disease.</abstract><cop>New York</cop><pub>Springer US</pub><pmid>37237069</pmid><doi>10.1007/s10753-023-01830-5</doi><tpages>14</tpages></addata></record>
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ispartof Inflammation, 2023-10, Vol.46 (5), p.1639-1652
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subjects Biomedical and Life Sciences
Biomedicine
Biopsy
Breast cancer
CTLA-4 Antigen - metabolism
CTLA-4 protein
Cytotoxicity
Enzyme-linked immunosorbent assay
Humans
Immunofluorescence
Immunology
Inflammation
Interleukin 12
Interleukin 4
Interleukin-12 - metabolism
Interleukin-4 - metabolism
Internal Medicine
Leukocytes
Lipid peroxidation
Lymphocytes
Lymphocytes T
Lymphocytes, Tumor-Infiltrating - metabolism
Lymphocytes, Tumor-Infiltrating - pathology
Nitric oxide
Nitric-oxide synthase
Oxidative stress
Pathology
Pharmacology/Toxicology
Prognosis
Rheumatology
Triple Negative Breast Neoplasms - metabolism
Triple Negative Breast Neoplasms - pathology
Tumors
title The Expression of CTLA-4 in Breast Tumors and Tumor-Infiltrating Leukocytes Affects Patients’ Systemic Inflammatory Status and Varies According to Their Molecular Subtypes
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