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Identification and characterization of Rab7 from orange-spotted grouper, Epinephelus coioides
Fu, J; Huang, YH; Cai, J; Wei, SN; Ouyang, ZL; Ye, FZ; Huang, XH; Qin, QW; huangxh@scsio.ac.cn; qinqw@scsio.ac.cn
2014
Source PublicationFISH & SHELLFISH IMMUNOLOGY
ISSN1050-4648
Volume36Issue:1Pages:19-26
AbstractRab7 is a small GTPase that regulates vesicular traffic from early to late endosomal stages of the endocytic pathway. During the virus-host co-evolution, host Rab7 was also exploited by virus to complete their life cycle. To date, however, the roles of fish Rab7 in virus infection remained largely unknown. Here, we cloned and characterized a Rab7 gene from grouper, Epinephelus coioides (Ec-Rab7). The full-length Ec-Rab7 cDNA was composed of 1182 bp and encoded a polypeptide of 207 amino acids which shared 99% identity with that from Anoplopoma fimbria or Oreochromis niloticus. Ec-Rab7 contained five conserved domains of Rab GTPase family including GTP-binding or GTPase regions as well as an effector site. RT-PCR analysis revealed that Ec-Rab7 ubiquitously expressed in all detected tissues and its transcript in spleen was up-regulated after challenge with Singapore grouper iridovirus (SGIV). Subcellular localization analysis revealed that Ec-Rab7 was distributed in the cytoplasm as spots and mostly colocalized with lysosomes. Notably, the ectopic expressed Ec-Rab7 partly aggregated into the viral factories in cells infected by SGIV. Furthermore, overexpression of Ec-Rab7 accelerated the occurrence of cytopathic effect (CPE) induced by SGIV infection and promoted viral gene transcription. In addition, far western blotting assay revealed that Ec-Rab7 might interact with viral proteins, including SGIV VP69 and VP101. Taken together, our data suggested that Ec-Rab7 might be potentially involved in SGIV replication. (C) 2013 Elsevier Ltd. All rights reserved.
Department[Fu, Jing ; Huang, Youhua ; Cai, Jia ; Wei, Shina ; Ouyang, Zhengliang ; Huang, Xiaohong ; Qin, Qiwei] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China ; [Fu, Jing ; Cai, Jia ; Wei, Shina] Univ Chinese Acad Sci, Beijing, Peoples R China ; [Ye, Fuzhou] Sun Yat Sen Univ, Sch Life Sci, State Key Lab Biocontrol, Guangzhou 510275, Guangdong, Peoples R China
KeywordEpinephelus Coioides Rab7 Lysosome Singapore Grouper Iridovirus (Sgiv) Virus Replication
Subject AreaFisheries ; Immunology ; Marine & Freshwater Biology ; Veterinary Sciences
Funding OrganizationNational Basic Research Program of China (973) [2012CB114402]; Natural Science Foundation of China [31330082, 30930070, 30800846, 30725027]; Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-EW-Q213] ; National Basic Research Program of China (973) [2012CB114402]; Natural Science Foundation of China [31330082, 30930070, 30800846, 30725027]; Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-EW-Q213] ; National Basic Research Program of China (973) [2012CB114402]; Natural Science Foundation of China [31330082, 30930070, 30800846, 30725027]; Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-EW-Q213] ; National Basic Research Program of China (973) [2012CB114402]; Natural Science Foundation of China [31330082, 30930070, 30800846, 30725027]; Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-EW-Q213]
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Indexed Bysci
Funding ProjectLMB
Funding OrganizationNational Basic Research Program of China (973) [2012CB114402]; Natural Science Foundation of China [31330082, 30930070, 30800846, 30725027]; Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-EW-Q213] ; National Basic Research Program of China (973) [2012CB114402]; Natural Science Foundation of China [31330082, 30930070, 30800846, 30725027]; Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-EW-Q213] ; National Basic Research Program of China (973) [2012CB114402]; Natural Science Foundation of China [31330082, 30930070, 30800846, 30725027]; Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-EW-Q213] ; National Basic Research Program of China (973) [2012CB114402]; Natural Science Foundation of China [31330082, 30930070, 30800846, 30725027]; Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-EW-Q213]
WOS IDWOS:000331671600003
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10491
Collection中科院海洋生物资源可持续利用重点实验室
Corresponding Authorhuangxh@scsio.ac.cn; qinqw@scsio.ac.cn
Recommended Citation
GB/T 7714
Fu, J,Huang, YH,Cai, J,et al. Identification and characterization of Rab7 from orange-spotted grouper, Epinephelus coioides[J]. FISH & SHELLFISH IMMUNOLOGY,2014,36(1):19-26.
APA Fu, J.,Huang, YH.,Cai, J.,Wei, SN.,Ouyang, ZL.,...&qinqw@scsio.ac.cn.(2014).Identification and characterization of Rab7 from orange-spotted grouper, Epinephelus coioides.FISH & SHELLFISH IMMUNOLOGY,36(1),19-26.
MLA Fu, J,et al."Identification and characterization of Rab7 from orange-spotted grouper, Epinephelus coioides".FISH & SHELLFISH IMMUNOLOGY 36.1(2014):19-26.
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