PMID- 26689644 OWN - NLM STAT- MEDLINE DCOM- 20161031 LR - 20181113 IS - 1879-0240 (Electronic) IS - 0965-1748 (Print) IS - 0965-1748 (Linking) VI - 70 DP - 2016 Mar TI - Protein kinase C modulates transcriptional activation by the juvenile hormone receptor methoprene-tolerant. PG - 44-52 LID - S0965-1748(15)30075-8 [pii] LID - 10.1016/j.ibmb.2015.12.001 [doi] AB - Juvenile hormone (JH) controls many biological events in insects by triggering dramatic changes in gene expression in target cells. The Methoprene-tolerant (MET) protein, an intracellular JH receptor, acts as a transcriptional regulator and binds to the promoters of tissue- and stage-specific JH target genes when JH is present. Our recent study has demonstrated that the transcriptional activation by MET is modulated by a membrane-initiated JH signaling pathway, involving phospholipase C (PLC) and calcium/calmodulin-dependent protein kinase II (CaMKII). Here we report that protein kinase C (PKC) is another essential intermediate of this pathway. PKC was activated by JH and this action was PLC-dependent. Inhibition of the PKC activity substantially weakened the JH-induced gene expression in mosquito cells. RNAi experiments indicated that several PKC isoforms were involved in the JH action during the post-emergence development of adult female mosquitoes. JH treatment considerably increased the binding of MET to the promoters of JH response genes in cultured mosquito abdomens that were collected from newly emerged female adults. The JH-induced DNA binding of MET was hindered when the abdomens were treated with a PKC inhibitor and JH. Therefore, the results suggest that PKC modulates the transactivation activity of MET by enhancing the binding of MET to JH response elements in the JH target genes. This mechanism may allow for variable and stage- and tissue-specific genomic responses to JH. CI - Copyright (c) 2015 Elsevier Ltd. All rights reserved. FAU - Ojani, Reyhaneh AU - Ojani R AD - Department of Biochemistry, Virginia Tech, Blacksburg, VA 24061, USA. FAU - Liu, Pengcheng AU - Liu P AD - Department of Biochemistry, Virginia Tech, Blacksburg, VA 24061, USA. FAU - Fu, Xiaonan AU - Fu X AD - Program of Genetics, Bioinformatics, and Computational Biology, Virginia Tech, Blacksburg, VA 24061, USA. FAU - Zhu, Jinsong AU - Zhu J AD - Department of Biochemistry, Virginia Tech, Blacksburg, VA 24061, USA. Electronic address: zhujin@vt.edu. LA - eng GR - R01 AI099250/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20151213 PL - England TA - Insect Biochem Mol Biol JT - Insect biochemistry and molecular biology JID - 9207282 RN - 0 (Juvenile Hormones) RN - 0 (Receptors, Cell Surface) RN - 8B830OJ2UX (Methoprene) RN - EC 2.7.11.13 (Protein Kinase C) SB - IM MH - Aedes MH - Animals MH - Cell Line MH - Juvenile Hormones/metabolism/*pharmacology MH - Methoprene/*pharmacology MH - Protein Kinase C/*metabolism MH - Receptors, Cell Surface/*metabolism MH - Transcriptional Activation/*drug effects PMC - PMC4767628 MID - NIHMS748196 OTO - NOTNLM OT - Gene regulation OT - Hormone receptor OT - Juvenile hormone OT - Phospholipase C OT - Protein kinase C EDAT- 2015/12/23 06:00 MHDA- 2016/11/01 06:00 PMCR- 2017/03/01 CRDT- 2015/12/23 06:00 PHST- 2015/07/23 00:00 [received] PHST- 2015/11/26 00:00 [revised] PHST- 2015/12/09 00:00 [accepted] PHST- 2017/03/01 00:00 [pmc-release] PHST- 2015/12/23 06:00 [entrez] PHST- 2015/12/23 06:00 [pubmed] PHST- 2016/11/01 06:00 [medline] AID - S0965-1748(15)30075-8 [pii] AID - 10.1016/j.ibmb.2015.12.001 [doi] PST - ppublish SO - Insect Biochem Mol Biol. 2016 Mar;70:44-52. doi: 10.1016/j.ibmb.2015.12.001. Epub 2015 Dec 13.