Increased circulating myeloid-derived suppressor cells correlate with clinical cancer stage, metastatic tumor burden, and doxorubicin–cyclophosphamide chemotherapy

Abnormal accumulation of myeloid-derived suppressor cells (MDSC) is an important mechanism of tumor immune evasion. Cyclophosphamide (CTX) has also been shown in non-tumor bearing animals to cause transient surges in MDSC. Knowledge of MDSC is primarily based on preclinical work, and to date only fe...

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Veröffentlicht in:Cancer Immunology, Immunotherapy Immunotherapy, 2009-01, Vol.58 (1), p.49-59
Hauptverfasser: Diaz-Montero, C. Marcela, Salem, Mohamed Labib, Nishimura, Michael I., Garrett-Mayer, Elizabeth, Cole, David J., Montero, Alberto J.
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container_issue 1
container_start_page 49
container_title Cancer Immunology, Immunotherapy
container_volume 58
creator Diaz-Montero, C. Marcela
Salem, Mohamed Labib
Nishimura, Michael I.
Garrett-Mayer, Elizabeth
Cole, David J.
Montero, Alberto J.
description Abnormal accumulation of myeloid-derived suppressor cells (MDSC) is an important mechanism of tumor immune evasion. Cyclophosphamide (CTX) has also been shown in non-tumor bearing animals to cause transient surges in MDSC. Knowledge of MDSC is primarily based on preclinical work, and to date only few published studies have involved cancer patients. The goal of this study was to test the hypothesis that circulating MDSC levels correlate with clinical cancer stage, CTX-based chemotherapy, and metastatic tumor burden. Whole blood was collected from 106 newly diagnosed solid tumor patients (stages I–IV). Percentages of circulating MDSC (Lin −/Lo , HLA DR−, CD33 + CD11b + ) were determined prior to initiation of systemic therapy. In 17 early stage breast cancer patients receiving doxorubicin–cyclophosphamide chemotherapy every 14 days (ddAC) blood was collected on day 1 of each cycle. Circulating MDSC were significantly increased in cancer patients of all stages relative to healthy volunteers. A significant correlation between circulating MDSC and clinical cancer stage was also observed. Moreover, among stage IV patients, those with extensive metastatic tumor burden had the highest percent and absolute number of MDSC. Significant increases in circulating MDSC were observed with ddAC when compared with pretreatment levels. Circulating MDSC levels correlate with clinical cancer stage, ddAC, and metastatic tumor burden. This information must be incorporated into the design of future trials exploring immune-based therapeutic strategies. Pharmacologic modulation of MDSC should also be tested in future clinical trials.
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Percentages of circulating MDSC (Lin −/Lo , HLA DR−, CD33 + CD11b + ) were determined prior to initiation of systemic therapy. In 17 early stage breast cancer patients receiving doxorubicin–cyclophosphamide chemotherapy every 14 days (ddAC) blood was collected on day 1 of each cycle. Circulating MDSC were significantly increased in cancer patients of all stages relative to healthy volunteers. A significant correlation between circulating MDSC and clinical cancer stage was also observed. Moreover, among stage IV patients, those with extensive metastatic tumor burden had the highest percent and absolute number of MDSC. Significant increases in circulating MDSC were observed with ddAC when compared with pretreatment levels. Circulating MDSC levels correlate with clinical cancer stage, ddAC, and metastatic tumor burden. This information must be incorporated into the design of future trials exploring immune-based therapeutic strategies. 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Marcela</creatorcontrib><creatorcontrib>Salem, Mohamed Labib</creatorcontrib><creatorcontrib>Nishimura, Michael I.</creatorcontrib><creatorcontrib>Garrett-Mayer, Elizabeth</creatorcontrib><creatorcontrib>Cole, David J.</creatorcontrib><creatorcontrib>Montero, Alberto J.</creatorcontrib><title>Increased circulating myeloid-derived suppressor cells correlate with clinical cancer stage, metastatic tumor burden, and doxorubicin–cyclophosphamide chemotherapy</title><title>Cancer Immunology, Immunotherapy</title><addtitle>Cancer Immunol Immunother</addtitle><addtitle>Cancer Immunol Immunother</addtitle><description>Abnormal accumulation of myeloid-derived suppressor cells (MDSC) is an important mechanism of tumor immune evasion. Cyclophosphamide (CTX) has also been shown in non-tumor bearing animals to cause transient surges in MDSC. Knowledge of MDSC is primarily based on preclinical work, and to date only few published studies have involved cancer patients. 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1432-0851
language eng
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source MEDLINE; PubMed Central; SpringerLink Journals - AutoHoldings
subjects Adult
Aged
Antineoplastic agents
Antineoplastic Combined Chemotherapy Protocols - immunology
Antineoplastic Combined Chemotherapy Protocols - therapeutic use
Biological and medical sciences
Breast cancer
Breast Neoplasms - drug therapy
Breast Neoplasms - immunology
Breast Neoplasms - physiopathology
Cancer Research
Cancer therapies
Chemotherapy
Cyclophosphamide - immunology
Cyclophosphamide - therapeutic use
Disease Progression
Doxorubicin - immunology
Doxorubicin - therapeutic use
Female
Flow Cytometry
Gynecology. Andrology. Obstetrics
Humans
Immunology
Immunotherapy
Lymphocytes
Male
Mammary gland diseases
Medical sciences
Medicine
Medicine & Public Health
Metastasis
Middle Aged
Myeloid Cells - cytology
Myeloid Cells - immunology
Neoplasm Staging
Oncology
Original Article
Patients
Pharmacology. Drug treatments
Reference Standards
Tumor Burden - immunology
Tumors
title Increased circulating myeloid-derived suppressor cells correlate with clinical cancer stage, metastatic tumor burden, and doxorubicin–cyclophosphamide chemotherapy
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