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Regulation of phagocytosis against bacterium by Rab GTPase in shrimp Marsupenaeus japonicus

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Regulation of phagocytosis against bacterium by Rab GTPase in shrimp Marsupenaeus japonicus.htm (413bytes)
Date
2008
Author
Zong, Rongrong
Wu, Wenlin
吴文林
Xu, Jianyang
Zhang, Xiaobo
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  • 生命科学-已发表论文 [5901]
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Abstract
Rab GTPases, members of the Ras superfamily, play important roles in phagosome formation and maturation. However, the involvement of Rab protein in phagocytosis against invading pathogens in crustacean remains unknown. In the present study, the RNAi and mRNA overexpression assays were conducted to elucidate the function of shrimp Rab gene (designated as PjRab) in hemocytic phagocytosis against bacterium. The results indicated that the phagocytic percentage and phagocytic index using FITC-labeled Vibrio parahemolyticus were significantly decreased when the PjRab gene was silenced by sequence-specific siRNA, suggesting that the PjRab protein was essential in hemocytic phagocytosis. On the other hand, the overexpression of PjRab gene leaded to the increase of phagocytic percentage and phagocytic index. The findings indicated that the PjRab protein was involved in the regulation of hemocytic phagocytosis of shrimp. Our report on the regulation of phagocytosis by Rab GTPase would contribute a better clue to realize the still poorly understood molecular events involved in shrimp as well as crustacean immune response. (c) 2008 Elsevier Ltd. All rights reserved.
Citation
Fish & Shellfish Immunology,Volume 25, Issue 3, September 2008, Pages 258-263
URI
http://dx.doi.org/doi:10.1016/j.fsi.2008.05.006
https://dspace.xmu.edu.cn/handle/2288/10342

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