title: Regulatory T cells, dendritic cells and neutrophils in patients with renal cell carcinoma.
abstract: We evaluated dendritic cells (DC), regulatory T lymphocytes (Treg) and neutrophils in 37 patients with newly diagnosed renal cell carcinoma (RCC) in the tumor and peripheral blood (PB) and correlated these parameters with tumor staging (early-T1, 2, late-T3, 4 and metastatic disease). The number of myeloid and plasmacytoid DC in blood of RCC patients was higher than in healthy controls. The percentage of myeloid dendritic cells (mDC) from CD45+ cells in tumors was higher in comparison with peripheral blood irrespective of disease stage. Higher percentage of these cells expressed a maturation marker in the periphery in the early stage (CD83 expressing cells). The number of plasmacytoid dendritic cells (pDC) in PB was similar in both early and late stage groups, but the early group displayed a significantly higher percentage of pDC in tumor cell suspension. Neutrophil counts in the peripheral blood of RCC patients were higher than in healthy controls, but the counts in both tumor stage groups were similar. The proportion of neutrophils from CD45+ cells was higher in late stage tumors. Higher percentage of Treg from CD4+ cells was detected in renal carcinoma tissue in comparison to PB with no difference between stages of the disease. Our results reflect the complex interplay between various cells of the immune system and the tumor microenvironment. Activation of dendritic cell subpopulations at early stages of the disease course is counterbalanced by the early appearance of T regulatory cells both in the periphery and tumor tissue. Later stages are characterized by the accumulation of neutrophils in the tumor. Appropriate timing of anticancer strategies, especially immunotherapy, should take these dynamics of the immune response in RCC patients into account.
authors.affiliation: Department of Urology, 2nd Faculty of Medicine, Charles University and University Hospital Motol, V Úvalu 84, 150 06 Prague, Czech Republic. ivo.minarik@lfmotol.cuni.cz
authors.forename: Ivo
authors.initials: I
authors.lastname: Minárik
authors.forename: Jan
authors.initials: J
authors.lastname: Lašťovička
authors.forename: Vít
authors.initials: V
authors.lastname: Budinský
authors.forename: Jana
authors.initials: J
authors.lastname: Kayserová
authors.forename: Radek
authors.initials: R
authors.lastname: Spíšek
authors.forename: Ladislav
authors.initials: L
authors.lastname: Jarolím
authors.forename: Anna
authors.initials: A
authors.lastname: Fialová
authors.forename: Marek
authors.initials: M
authors.lastname: Babjuk
authors.forename: Jiřina
authors.initials: J
authors.lastname: Bartůňková
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015703:Antigens, CD / Q000378:metabolism; D002292:Carcinoma, Renal Cell / Q000276:immunology*; D003713:Dendritic Cells / Q000276:immunology*; D005260:Female; D006801:Humans; D007136:Immunoglobulins / Q000378:metabolism; D007680:Kidney Neoplasms / Q000276:immunology*; D017493:Leukocyte Common Antigens / Q000378:metabolism; D008213:Lymphocyte Activation / Q000276:immunology; D018655:Lymphocyte Count; D008297:Male; D008562:Membrane Glycoproteins / Q000378:metabolism; D008875:Middle Aged; D022423:Myeloid Cells / Q000276:immunology; D009367:Neoplasm Staging; D009504:Neutrophils / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*; D059016:Tumor Microenvironment / Q000276:immunology; D000097802:CD83 Antigen
chemical_list: D015703:Antigens, CD; D007136:Immunoglobulins; D017493:Leukocyte Common Antigens; D008562:Membrane Glycoproteins; D000097802:CD83 Antigen; C516769:PTPRC protein, human
keywords: CTL; DC; Dendritic cells; NK; Neutrophils; PB; RCC; Regulatory T cells; Renal cell carcinoma; TIN; Treg; Tumor infiltration; cytotoxic T lymphocytes; dendritic cells; mDC; myeloid dendritic cells; natural killer; pDC; peripheral blood; plasmacytoid dendritic cells; regulatory T lymphocytes; renal cell carcinoma; tumor infiltrating neutrophils