Flow Cytometry-Based Enumeration and Functional Characterization of CD8 T Regulatory Cells in Patients with Multiple Myeloma Before and After Lenalidomide Plus Dexamethasone Treatment

Logo poskytovatele

Varování

Publikace nespadá pod Fakultu sportovních studií, ale pod Lékařskou fakultu. Oficiální stránka publikace je na webu muni.cz.
Autoři

MUTHU RAJA Karthick Raja PLÁŠIL Martin ŘÍHOVÁ Lucie PELCOVÁ Jana ADAM Zdeněk HÁJEK Roman

Rok publikování 2014
Druh Článek v odborném periodiku
Časopis / Zdroj Cytometry Part B ( Clinical cytometry)
Fakulta / Pracoviště MU

Lékařská fakulta

Citace
Doi http://dx.doi.org/10.1002/cyto.b.21109
Obor Onkologie a hematologie
Klíčová slova CD8 T regulatory cells; multiple myeloma; immune suppression; lenalidomide; dexamethasone; flow cytometry and CFSE
Přiložené soubory
Popis Background: Multiple myeloma (MM) is a malignancy of plasma cells frequently associated with immune abnormalities. Several studies have confirmed that in MM immune deregulation can be mediated by increased numbers of CD4 T regulatory (Treg) cells, and these cells were also associated with poor outcome. In this study, we aimed to study CD8 Treg cells before and after lenalidomide plus dexamethasone (len-dex) treatment in MM patients. Methods: Using flow cytometry, we enumerated and assessed suppressive function of CD8 Treg cells in 16 MM patients before and after len-dex treatment. Results: Numbers of CD8 Treg cells (CD8+CD25hi+FoxP3+) (P < 0.01) were significantly increased in MM patients (before treatment) compared to healthy donors. However, no significant changes were observed in CD4 and CD8 T cells. A significant increase in CD8 Treg cells was observed after len-dex treatment compared to pre-treatment but no significant difference was observed in CD4 and CD8 T cells. Proliferation assay data showed that CD8 Treg cells inhibited proliferation of CD4 T cells and IFN-gamma secretion in a concentration dependent manner. Suppressive activity of CD8 Treg cells did not differ significantly between healthy donors, untreated and len-dex treated MM patients. A significant abnormal level of IL-10 was observed from proliferation assays of untreated and len-dex treated MM patients compared to healthy donors (P <= 0.03). Conclusions: Using flow cytometry, we have shown that suppressive CD8 Treg cells are increased in MM patients and len-dex treatment is unable to control these suppressive CD8 Treg cells. (C) 2013 International Clinical Cytometry Society
Související projekty:

Používáte starou verzi internetového prohlížeče. Doporučujeme aktualizovat Váš prohlížeč na nejnovější verzi.

Další info