Title of article :
Effect of Cytomegalovirus Recombinant Phosphoprotein 150 (pp150) on Function and Maturation of Murine Dendritic Cells: an In-Vitro Study
Author/Authors :
Karimi, Mohammad Hossein Transplant Research Center - Nemazee Hospital - Shiraz University of Medical Sciences, Shiraz , Nikmanesh, Yousef Transplant Research Center - Nemazee Hospital - Shiraz University of Medical Sciences, Shiraz , Yaghobi, Ramin Transplant Research Center - Nemazee Hospital - Shiraz University of Medical Sciences, Shiraz , Marashi, Mahdi Transplant Research Center - Nemazee Hospital - Shiraz University of Medical Sciences, Shiraz , Aghdaie, Mahdokht Hossein Transplant Research Center - Nemazee Hospital - Shiraz University of Medical Sciences, Shiraz , Khosravi, Maryam Transplant Research Center - Nemazee Hospital - Shiraz University of Medical Sciences, Shiraz , Shahmahmoodi, Shohreh Virology Department - School of Public Health - Tehran University of Medical Sciences, Tehran , Mahmoudi, Mahmood Department of Epidemiology and Biostatistics - School of Public Health - Tehran University of Medical Sciences - Tehran, Iran
Abstract :
Tegument protein pp150 of cytomegaloviruses (CMVs) plays a vital role in all stages of viral life cycle, representing the most important tegument protein candidate for HCMV treatment. However, the exact role of pp150 in immune regulation is yet to be elucidated. Objective: To examine the effects of pp150 on the maturity and function of murine dendritic cells (DCs). Methods: Maturity status (CD40, CD86, and MHC-II expression) and phagocytic capacity of DCs (dextran uptake assay) were characterized. Gene expression profiles of ROR-γ, GATA-3, T-bet, and FOXP-3 as well as the protein expression of INF-γ (Th1), IL-4 (Th2), IL-35 (Treg), IL-17A (Th17), IL-22, TNF-α, IL-6, and IL-2 were evaluated in T cells co-cultured with DCs. Results: A significant increase in CD40, CD86, and CCR7 expression and a reduction in the phagocytosis rate were observed in pp150-stimulated DCs compared with unstimulated DCs. T cells co-cultured with stimulated DCs showed higher expressions of ROR-γ, IL-6, IL-2, IL-17A, IL-22, and TNF-α. Conclusion: Despite improvements in maturity status, pp150-stimulated DCs does not seem to be able to induce Th1 or Th2 immunity. In fact, Th17 and its mediators, IL-17A and IL-22, might be the main inflammatory factors involved in pp150-stimulated DC's action mechanism. However, it is necessary to conduct further investigations to corroborate these observations.
Keywords :
pp150 , Cytomegalovirus , Dendritic Cell Maturation
Journal title :
Astroparticle Physics
