PMID- 17512002 OWN - NLM STAT- MEDLINE DCOM- 20071206 LR - 20070723 IS - 0022-1910 (Print) IS - 0022-1910 (Linking) VI - 53 IP - 7 DP - 2007 Jul TI - Cloning and characterization of two Campoletis chlorideae ichnovirus vankyrin genes expressed in parasitized host Helicoverpa armigera. PG - 699-707 AB - Polydnaviruses, symbionts of parasitic ichneumonid (ichnoviruses, IVs) and braconid (bracoviruses, BVs), are injected into hosts along with wasp eggs. Within the host, PDV genes are expressed and their products function to alter lepidopteran host physiology and enable endoparasitoid development. In the present study, we describe two Campoletis chlorideae ichnovirus (CcIV) viral ankyrin (vankyrin) genes and their transcription. The CcIV vankyrin genes possess ankyrin repeat domains that resemble the inhibitory domains of the Drosophila melanogaster NF-kappaB transcription factor inhibitor (IkappaB) cactus. The expression of CcIV vankyrin genes could be detected in Helicoverpa armigera during the whole course of parasitization with two expression peaks, 30 min post-parasitization (p.p.) and 2 days p.p. Our data indicate that the CcIV vankyrin genes are differentially expressed in the tissues of parasitized hosts and both are mainly expressed in hemocytes. The temporal and spatial variation in expression of the two CcIV vankyrin genes suggests that CcIV vankyrin genes could be involved in early protection of parasitoid eggs from host cellular immune response by suppressing NF-kappaB signaling cascades, thereby altering development and immune responses of parasitized lepidopteran hosts. FAU - Tian, Shen-Peng AU - Tian SP AD - State Key Laboratory of Integrated Management of Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100080, China. FAU - Zhang, Ji-Hong AU - Zhang JH FAU - Wang, Chen-Zhu AU - Wang CZ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070410 PL - England TA - J Insect Physiol JT - Journal of insect physiology JID - 2985080R RN - 0 (DNA, Viral) RN - 0 (Oligodeoxyribonucleotides) RN - 0 (RNA, Viral) RN - 0 (Viral Proteins) SB - IM MH - Amino Acid Sequence MH - Animals MH - Base Sequence MH - Conserved Sequence MH - DNA, Viral/chemistry/genetics MH - Gene Expression Regulation, Viral MH - Molecular Sequence Data MH - Oligodeoxyribonucleotides/chemistry MH - Phylogeny MH - Polydnaviridae/classification/*genetics/pathogenicity MH - Polymerase Chain Reaction MH - RNA, Viral/genetics/isolation & purification MH - Sequence Alignment MH - Viral Proteins/chemistry/genetics MH - Wasps/*virology EDAT- 2007/05/22 09:00 MHDA- 2007/12/07 09:00 CRDT- 2007/05/22 09:00 PHST- 2006/11/25 00:00 [received] PHST- 2007/03/29 00:00 [revised] PHST- 2007/03/29 00:00 [accepted] PHST- 2007/05/22 09:00 [pubmed] PHST- 2007/12/07 09:00 [medline] PHST- 2007/05/22 09:00 [entrez] AID - S0022-1910(07)00086-8 [pii] AID - 10.1016/j.jinsphys.2007.03.015 [doi] PST - ppublish SO - J Insect Physiol. 2007 Jul;53(7):699-707. doi: 10.1016/j.jinsphys.2007.03.015. Epub 2007 Apr 10.