Cited by 90Multiple Myeloma Research and TreatmentsT-cell and B-cell ImmunologyTGF-β signaling in diseases

FOXP3 and CTLA4 overexpression in multiple myeloma bone marrow as a sign of accumulation of CD4+ T regulatory cells

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Braga, Walter Moises Tobias, da Silva, Bruna Raphaeli, de Carvalho, Ana Carolina, Maekawa, Yumi H., Bortoluzzo, Adriana Bruscato, Rizzatti, Edgar Gil, Atanackovic, Djordje, Colleoni, Gisele Wally Braga·2014·Cancer Immunology, Immunotherapy

Abstract

INTRODUCTION: Multiple myeloma (MM) development involves a series of genetic abnormalities and changes in the bone marrow (BM) microenvironment, favoring the growth of the tumor and failure of local immune control. T regulatory (Treg) cells play an important role in dampening anti-tumor immune responses while T-helper-17 (Th17) cells seem to be critical for the eradication of malignant cells. The aim of our study was to characterize the expression of Treg- and Th17-related genes in total myeloma BM samples to assess their role as biomarkers, prognostic factors, and possible therapeutic targets in this incurable disease. METHODS: Expression of markers for Treg (FOXP3, CTLA4) and Th17 cells (RORγt) was determined by quantitative real-time PCR in BM aspirates of 46 MM patients, four patients with monoclonal gammopathy of undetermined significance, five solitary plasmacytomas, and five healthy BM donors. Gene expression was evaluated regarding an influence on the patients' overall survival (OS). RESULTS: FOXP3 and CTLA4 presented a sixfold (p = 0.02) and 30-fold higher expression (p = 0.03), respectively, in MM patients than in controls. RORγt expression was similar in MM patients and controls. Median OS of MM patients was 16.8 (range 4.5-29.1) months, and international staging system was the only independent prognostic factor for patients survival. CONCLUSIONS: Overexpression of FOXP3 and CTLA4 in total BM samples suggests a local accumulation of immunosuppressive Tregs, the MM tumor environment, possibly dampening anti-tumor host immune responses. Therapeutic approaches targeting Treg cells and restoring local anti-tumor immunity may provide new treatment strategies for this incurable malignancy.

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Authors
Braga, W. M. T., da Silva, B. R., de Carvalho, A. C., Maekawa, Y. H., Bortoluzzo, A. B., Rizzatti, E. G., Atanackovic, D., & Colleoni, G. W. B.
Affiliations
  • Fleury S.A. (Brazil) (BR)
  • Insper (BR)
  • University Medical Center Hamburg-Eppendorf (DE)
  • Universidade Federal de São Paulo (BR)
Corresponding author
Colleoni, Gisele Wally Braga
Venue
Cancer Immunology, Immunotherapy
Published
2014-08-07
Volume
63
Issue
11
Pages
1189-1197
ISSN
  • 0340-7004 (ISSN-L)
  • 1432-0851
OpenAlex
W2020191927
Cited by
88
References
39
Citations by year
2026: 5 · 2025: 10 · 2024: 4 · 2023: 9 · 2022: 12 · 2021: 9 · 2020: 7 · 2019: 10 · 2018: 8 · 2017: 4 · 2016: 4 · 2015: 5 · 2014: 1
FWCI
3.31
Type
journal article
Language
en
Open access
Locations
  • Cancer Immunology Immunotherapy (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion)
  • PubMed (publishedVersion)
  • Americanae (AECID Library) (submittedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
Funders
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (2010-17668-6, 10/17668-6)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
Topics
  • Health Sciences › Medicine › Hematology › Multiple Myeloma Research and Treatments
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › TGF-β signaling in diseases
Keywords
multiple myeloma, Foxp3, CTLA-4, regulatory T cells, Th17 cells, RORγt, bone marrow microenvironment, immunosuppression, prognostic factors, overall survival, antitumor immunity, monoclonal gammopathy of undetermined significance, solitary plasmacytoma
MeSH terms
Adult, Aged, Aged, 80 and over, Bone Marrow, Bone Marrow Cells, Female, Humans, Immunosuppression Therapy, Male, Middle Aged, Monoclonal Gammopathy of Undetermined Significance, Multiple Myeloma, Plasmacytoma, Biomarkers, Gene Expression Regulation, Neoplastic, Treatment Outcome, T-Lymphocytes, Regulatory, Forkhead Transcription Factors, Syndecan-1, Nuclear Receptor Subfamily 1, Group F, Member 3, Th17 Cells, CTLA-4 Antigen

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