ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2016, Vol. 47 ›› Issue (9): 1924-1930.doi: 10.11843/j.issn.0366-6964.2016.09.022

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The Influence of Antibodies against Key Factors of Different Endocytic Pathways on Dendritic Cells Uptake Recombinant Parvovirus-like Particles

SHEN Xiao-qiang,ZUO Yu-zhu*,DI Jing-mei,GU Wen-yuan,FAN Jing-hui*   

  1. (College of Veterinary Medicine,Agricultural University of Hebei,Baoding 071001,China)
  • Received:2016-03-09 Online:2016-09-23 Published:2016-09-23

Abstract:

 Recombinant parvovirus-like particles (PPV-VLPs) are particulate exogenous antigens that induce strong CTL response.In order to decipher the mechanisms responsible for CTL activation by such exogenous antigen and the probable endocytic pathways in PPV-VLP capture,we analyzed the influence of different antibodies on dendritic cells (DCs) endocytic uptaking recombinant parvovirus-like particles.The results analyzed by FACStar cytometer and confocal microscopy showed that the PPV-VLPs capture efficiency of spleen DCs pretreated with anti-CD64 and anti-DEC205 antibodies was not affected.However,anti-caveolin-1 antibodies treated DCs was severely reduced.DCs pretreated with anti-actin antibodies were barely to uptake PPV-VLPs.These results showed that the uptake of PPV-VLPs seems to be related to macropinocytosis and caveolae-mediated endocytosis in an actin-dependent pathway,not clathrin-coated pits or phagocytosis.

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