Circulating Myeloid-Derived Suppressor Cell Subsets in Patients with Colorectal Cancer – Exploratory Analysis of Th eir Biomarker Potential

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00209805%3A_____%2F18%3A00078049" target="_blank" >RIV/00209805:_____/18:00078049 - isvavai.cz</a>

Result on the web

<a href="https://www.linkos.cz/files/klinicka-onkologie/443/5397.pdf" target="_blank" >https://www.linkos.cz/files/klinicka-onkologie/443/5397.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14735/amko20182S88" target="_blank" >10.14735/amko20182S88</a>

Result language

angličtina

Original language name

Circulating Myeloid-Derived Suppressor Cell Subsets in Patients with Colorectal Cancer – Exploratory Analysis of Th eir Biomarker Potential

Original language description

Background: Myeloid-derived suppressor cells (MDSCs) contribute to tumor escape from host immune surveillance and to tumor progression by producing tumor-promoting factors. We focused on clinical and analytical MDSCs-related issues as potential biomarkers and immune regulators involved in tumor progression. Patients and Methods: We analyzed 10 patients with advanced colorectal carcinoma (CRC) with (M1 subgroup) or without (M0 subgroup) distant metastases at diagnosis. Peripheral blood was collected at diagnosis prior to treatment and subsequently 12 months after therapy initiation. Using multicolor flowcytometry MDSC subsets were evaluated. Monocytic MDSCs (M-MDSCs) were detected as CD45+ CD11b+ CD33+ HLA-DRlow/- CD14+ CD15-, granulocytic MDSCs (CD33hi PMN-MDSC) were detected as CD45+ CD11b+ CD33hi HLA-DRlow/- CD14- CD15+. For analytical and preanalytical studies, random fresh blood specimens predominantly from cancer patients were analyzed. Results: Levels of circulating M-MDSCs were not associated with metastatic disease within advanced CRC patients. Levels of circulating CD33hi PMN-MDSCs were elevated in patients with distant metastases compared to T3 M0 subgroup. Circulating M-MDSCs increased upon treatment initiation in 9 out of 10 patients. CD33hi PMN-MDSCs substantially dropped upon treatment initiation in 5 out of 10 patients and substantially increased in 2 out of 10 patients. Analytical part showed that absolute and relative counts within each MDSC subset are correlated. Coefficient of variation (CV) for repeatability was 6-11% for M-MDSCs and 25-44% for CD33hi PMN-MDSCs. CV for reproducibility was higher with 8-22% for M-MDSCs and 35-79% for CD33hi PMN-MDSCs demonstrating that delay in measurement of MDSCs in whole blood specimen may distort quantifi cation of circulating MDSC subsets. Conclusion: The quantification of MDSC subsets is substantially dependent on the type of specimen examined and its preanalytical processing. Exploratory analysis of M-MDSCs and CD33hi PMN-MDSCs in CRC patients revealed different dynamics of M-MDSC and CD33hi PMN-MDSC subsets in the context anti-cancer treatment.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

30204 - Oncology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Klinická onkologie

ISSN

0862-495X

e-ISSN

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Volume of the periodical

31

Issue of the periodical within the volume

Suppl 2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

5

Pages from-to

"2S88–2S92"

UT code for WoS article

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EID of the result in the Scopus database

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