Abstract:
:Neuropeptides and their G protein-coupled receptors are widespread throughout Metazoa and in several cases, clear orthologues can be identified in both protostomes and deuterostomes. One such neuropeptide is the insect adipokinetic hormone (AKH), which is related to the mammalian gonadotropin-releasing hormone. AKH has been studied extensively and is known to mobilize lipid, carbohydrates and proline for energy-consuming activities such as flight. In order to determine the possible roles for this signalling system in Rhodnius prolixus, we isolated the cDNA sequences encoding R. prolixus AKH (Rhopr-AKH) and its receptor (Rhopr-AKHR). We also examined their spatial expression pattern using quantitative PCR. Our expression analysis indicates that Rhopr-AKH is only expressed in the corpus cardiacum of fifth-instars and adults. Rhopr-AKHR, by contrast, is expressed in several peripheral tissues including the fat body. The expression of the receptor in the fat body suggests that AKH is involved in lipid mobilization, which was confirmed by knockdown of Rhopr-AKHR via RNA interference. Adult males that had been injected with double-stranded RNA (dsRNA) for Rhopr-AKHR exhibited increased lipid content in the fat body and decreased lipid levels in the haemolymph. Moreover, injection of Rhopr-AKH in Rhopr-AKHR dsRNA-treated males failed to elevate haemolymph lipid levels, confirming that this is indeed the receptor for Rhopr-AKH.
journal_name
Insect Mol Bioljournal_title
Insect molecular biologyauthors
Zandawala M,Hamoudi Z,Lange AB,Orchard Idoi
10.1111/imb.12157subject
Has Abstractpub_date
2015-04-01 00:00:00pages
264-76issue
2eissn
0962-1075issn
1365-2583journal_volume
24pub_type
杂志文章abstract::Vitellogenins, cyclorraphan yolk proteins and lepidopteran minor yolk proteins are three classes of female-specific proteins that serve as an embryonic nutritional store. Similarity to vertebrate lipid-binding proteins was established for vitellogenins and yolk proteins, vitellogenins being related to apolipoprotein B...
journal_title:Insect molecular biology
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2005.00588.x
更新日期:2005-12-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
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更新日期:1998-05-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1046/j.1365-2583.2000.00175.x
更新日期:2000-04-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1046/j.1365-2583.2002.00319.x
更新日期:2002-04-01 00:00:00
abstract::Two piggyBac-like elements (PLEs) were identified in the cotton bollworm, Helicoverpa armigera, and were designated as HaPLE1 and HaPLE2. HaPLE1 is flanked by 16 bp inverted terminal repeats (ITRs) and the duplicated TTAA tetranucleotide, and contains an open reading frame (ORF) of 1794 bp with the presumed DDD domain...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2008.00780.x
更新日期:2008-02-01 00:00:00
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更新日期:2016-08-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
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更新日期:2011-06-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2007.00729.x
更新日期:2007-06-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/imb.12128
更新日期:2015-02-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1046/j.1365-2583.1999.820267.x
更新日期:1999-05-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.1993.tb00132.x
更新日期:1993-01-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2004.00464.x
更新日期:2004-02-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/imb.12268
更新日期:2017-02-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
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journal_title:Insect molecular biology
pub_type: 杂志文章
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journal_title:Insect molecular biology
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journal_title:Insect molecular biology
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journal_title:Insect molecular biology
pub_type: 杂志文章
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更新日期:2010-12-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.1998.00063.x
更新日期:1998-08-01 00:00:00
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/imb.12096
更新日期:2014-08-01 00:00:00
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更新日期:2006-04-01 00:00:00
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journal_title:Insect molecular biology
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journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1046/j.1365-2583.1998.740327.x
更新日期:1998-11-01 00:00:00
abstract::A gene from the Mediterranean fruit fly (Medfly) Ceratitis capitata, belonging to the hsp70 family of genes, has been cloned and characterized. This gene appears to be an example of a heat shock cognate (hsc) gene based on a variety of structural and functional criteria. The heat shock cognate genes serve critical rol...
journal_title:Insect molecular biology
pub_type: 杂志文章
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更新日期:1998-02-01 00:00:00
abstract::A cDNA (D7-8B) 1456 nucleotides in length was isolated from an adult, female-specific Anopheles gambiae library and identified as a member of the glutathione S-transferase (GST) gene family by virtue of the inferred amino acid sequence. The gene, AgGST2-1, specifies a protein that is 57% identical to the Drosophila me...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.1993.tb00122.x
更新日期:1993-01-01 00:00:00