Name: a calcium bioluminescence assay for functional analysis of mosquito (aedes aegypti) and tick (rhipicephalus microplus) g protein-coupled receptors
Uploaded: 2011-04-20T11:00:00
Duration: 10 min 46 s
Description: Watch this Scientific Journal Video about A Calcium Bioluminescence Assay for Functional Analysis of Mosquito Aedes aegypti and Tick Rhipicephalus microplus G Protein-coupled Receptors at JoVE.com

Др. CJP Grimmelikhuijzen и Майкл Уильямсон из Университета Копенгагена (Дания) ценятся за предоставление aequorin плазмиды. Наш сотрудник, доктор Рональд Дж. Нахмана из ARS-USDA (штат Техас, США), признается для синтеза пептидов и за предоставление читателю NOVOstar пластины.

<ol>
	<li>Kozak, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=An+analysis+of+5'-noncoding+sequences+from+699+vertebrate+messenger+RNAs.">An analysis of 5'-noncoding sequences from 699 vertebrate messenger RNAs.</a> Nucleic Acids Research. 15, 8125-8148 (1987).</li><li>Nachman, R., Pietrantonio, P. V., Geary, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Interaction+of+mimetic+analogs+of+insect+kinin+neuropeptides+with+arthropod+receptors.">Interaction of mimetic analogs of insect kinin neuropeptides with arthropod receptors.</a> Neuropeptide systems as Targets for Parasite and Pest Control. , (2010).</li><li>Nachman, R. J., Pietrantonio, P. V., Coast, G. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Towards+the+development+of+novel+pest+management+agents+based+upon+insect+kinin+neuropeptide+analogs.">Towards the development of novel pest management agents based upon insect kinin neuropeptide analogs.</a> Annals of the New York Academy of Sciences. , 1163-11251 (2009).</li><li>Taneja-Bageshwar, S., Strey, A., Isaac, R. E., Coast, G. M., Zubrzak, P., Pietrantonio, P. V., Nachman, R. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Biostable+agonists+that+match+and/or+exceed+the+activity+of+insect+kinins+on+recombinant+arthropod+GPCRs.">Biostable agonists that match and/or exceed the activity of insect kinins on recombinant arthropod GPCRs.</a> General and Comparative Endocrinology. 162, 122-128 (2009).</li><li>Taneja-Bageshwar, S., Strey, A., Kaczmarek, K., Zabrocki, J., Pietrantonio, P. V., Nachman, R. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparison+of+insect+kinin+analogs+with+cis-peptide+bond,+type+VI-turn+motifs+identifies+optimal+stereochemistry+for+interaction+with+a+recombinant+arthropod+kinin+receptor+from+the+southern+cattle+tick+Boophilus+microplus.">Comparison of insect kinin analogs with cis-peptide bond, type VI-turn motifs identifies optimal stereochemistry for interaction with a recombinant arthropod kinin receptor from the southern cattle tick Boophilus microplus.</a> Peptides. 29, 295-301 .</li><li>Taneja-Bageshwar, S., Strey, A., Zubrzak, P., Williams, H., Reyes-Rangel, G., Juaristi, E., Pietrantonio, P. V., Nachman, R. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Identification+of+selective+and+non-selective,+biostable+beta-amino+acid+agonists+of+recombinant+insect+kinin+receptors+from+the+southern+cattle+tick+Boophilus+microplus+and+mosquito+Aedes+aegypti.">Identification of selective and non-selective, biostable beta-amino acid agonists of recombinant insect kinin receptors from the southern cattle tick Boophilus microplus and mosquito Aedes aegypti.</a> Peptides. 29, 302-309 .</li><li>Taneja-Bageshwar, S., Strey, A., Zubrzak, P., Pietrantonio, P. V., Nachman, R. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparative+structure-activity+analysis+of+insect+kinin+core+analogs+on+recombinant+kinin+receptors+drom+southern+cattle+tick+Boophilus+microplus+(Acari:+Ixodidae)+and+mosquito+Aedes+aegypti+(Diptera:+Culicidae).">Comparative structure-activity analysis of insect kinin core analogs on recombinant kinin receptors drom southern cattle tick Boophilus microplus (Acari: Ixodidae) and mosquito Aedes aegypti (Diptera: Culicidae).</a> Archives of Insect Biochemistry and Physiology. 62, 128-140 (2006).</li><li>Pietrantonio, P. V., Jagge, C., Taneja-Bageshwar, S., Nachman, R. 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V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Functional+analysis+of+a+G+protein-coupled+receptor+from+the+Southern+cattle+tick+Boophilus+microplus+(Acari:+Ixodidae)+identifies+it+as+the+first+arthropod+myokinin+receptor.">Functional analysis of a G protein-coupled receptor from the Southern cattle tick Boophilus microplus (Acari: Ixodidae) identifies it as the first arthropod myokinin receptor.</a> Insect Molecular Biology. 12, 27-38 (2003).</li><li>Staubli, F., Jorgensen, T. J. D., Cazzamali, G., Williamson, M., Lenz, C., Sondergaard, L., Roepstorff, P., Grimmelikhuijzen, C. J. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Molecular+identification+of+the+insect+adipokinetic+hormone+receptors.">Molecular identification of the insect adipokinetic hormone receptors.</a> Proceedings of the National Academy of Sciences USA. 99, 3446-3451 (2002).</li><li>Stables, J., Green, A., Marshall, F., Fraser, N., Knight, E., Sautel, M., Milligan, G., Lee, M., Rees, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+bioluminescent+assay+for+agonist+activity+at+potentially+any+G-protein+coupled+receptor.">A bioluminescent assay for agonist activity at potentially any G-protein coupled receptor.</a> Analytical Biochemistry. 252, 115-126 (1997).</li></ol>

Нет конфликта интересов объявлены.

Мы были в состоянии выполнять функциональные характеристики первого рецептор нейропептида обнаружил из паукообразных (клещи, клещи и пауки), рецептор тик кининовой, с помощью этого протокола. Этот метод имеет три основных приложений. Во-первых, методика может быть применена для рецепторов deorphanization путем измерений лиганд деятельности. Во-вторых, анализ может решить лиганд-рецепторных структур и активности (SAR). В-третьих, методы могут быть использованы в лекарственных препаратах. Кроме того, этот протокол может быть использован для изучения активности агонистов или антагонистов практически на любой GPCR. Мы начинаем адаптировать этот протокол для скрининга малых библиотек. Линия клеток мы использовали не выражает вездесущий белка G G 16. Нам не нужно, потому что членистоногих кининовой рецепторов сигнал через Gq белка и внутриклеточный каскад кальция и они сохраняют эту сигнализацию свойства в клетках млекопитающих, как показано здесь.

<table border="1"><tbody><tr><th> Название реагента </th><th> Компания </th><th> Номер в каталоге </th><th> Комментарии (необязательно) </th></tr><tr><td> DMEM </td><td> Invitrogen </td><td> ABCD1234 </td><td></td></tr><tr><td> СНО-К1 клетки </td><td> АТСС </td><td> CCL-61 </td><td> Манассас, Вирджиния, США </td></tr><tr><td> F12K среда </td><td> Invitrogen </td><td> 21127 </td><td></td></tr><tr><td> Эмбриональной телячьей сыворотки </td><td> Sigma-Aldrich </td><td> F0643 </td><td></td></tr><tr><td> Трипсин-EDTA (10x) </td><td> Invitrogen </td><td> 15400 </td><td></td></tr><tr><td> Антибиотик-противогрибковым </td><td> Invitrogen </td><td> 15240 </td><td></td></tr><tr><td> Opti-MEM я Уменьшение среднего сыворотки </td><td> Invitrogen </td><td> 31985 </td><td></td></tr><tr><td> Липофектина реагент </td><td> Invitrogen </td><td> 18292-011 </td><td></td></tr><tr><td> Генетицину </td><td> Invitrogen </td><td> 10131035 </td><td></td></tr><tr><td> MC1061/P3 Ultracomp </td><td> Invitrogen </td><td> C663-03 </td><td></td></tr><tr><td> QIAprep спина miniprep комплект </td><td> Qiagen ООО </td><td> 19064 </td><td></td></tr><tr><td> FuGENE 6 Трансфекция реагента </td><td> Roche </td><td> 11 814 443 001 </td><td></td></tr><tr><td> 96-луночного белой тонкой пластины microtitere дно </td><td> Costar </td><td> 3610 </td><td></td></tr><tr><td> бескальциевой DMEM СМИ </td><td> Invitrogen </td><td> 21068 </td><td></td></tr><tr><td> Coelenterazine </td><td> Invitrogen </td><td> C-2944 </td><td></td></tr><tr><td> Яркий-Line Hemacytometer </td><td> Хауссер Научные </td><td></td><td> Horsham, PA </td></tr><tr><td> NOVOstar </td><td> BMG Labtechnologies </td><td></td><td></td></tr><tr><td> Призма программного обеспечения 4,0 </td><td> GraphPad программного обеспечения ООО </td><td></td><td> Сан - Диего, Калифорния, США </td></tr><tr><td> Т-25 и Т-75 Колбы </td><td> BD Сокол </td><td> 353014 и 353135 </td><td></td></tr></tbody></table>

a calcium bioluminescence assay for functional analysis of mosquito (aedes aegypti) and tick (rhipicephalus microplus) g protein-coupled receptors

Arthropod hormone receptors are potential targets for novel pesticides as they regulate many essential physiological and behavioral processes. The majority of them belong to the superfamily of G protein-coupled receptors (GPCRs). We have focused on characterizing arthropod kinin receptors from the tick and mosquito. Arthropod kinins are multifunctional neuropeptides with myotropic, diuretic, and neurotransmitter function. Here, a method for systematic analyses of structure-activity relationships of insect kinins on two heterologous kinin receptor-expressing systems is described. We provide important information relevant to the development of biostable kinin analogs with the potential to disrupt the diuretic, myotropic, and/or digestive processes in ticks and mosquitoes.
The kinin receptors from the southern cattle tick, Boophilus microplus (Canestrini), and the mosquito Aedes aegypti (Linnaeus), were stably expressed in the mammalian cell line CHO-K1. Functional analyses of these receptors were completed using a calcium bioluminescence plate assay that measures intracellular bioluminescence to determine cytoplasmic calcium levels upon peptide application to these recombinant cells. This method takes advantage of the aequorin protein, a photoprotein isolated from luminescent jellyfish. We transiently transfected the aequorin plasmid (mtAEQ/pcDNA1) in cell lines that stably expressed the kinin receptors. These cells were then treated with the cofactor coelenterazine, which complexes with intracellular aequorin. This bond breaks in the presence of calcium, emitting luminescence levels indicative of the calcium concentration. As the kinin receptor signals through the release of intracellular calcium, the intensity of the signal is related to the potency of the peptide.
This protocol is a synthesis of several previously described protocols with modifications; it presents step-by-step instructions for the stable expression of GPCRs in a mammalian cell line through functional plate assays (Staubly et al., 2002 and Stables et al., 1997). Using this methodology, we were able to establish stable cell lines expressing the mosquito and the tick kinin receptors, compare the potency of three mosquito kinins, identify critical amino acid positions for the ligand-receptor interaction, and perform semi-throughput screening of a peptide library. Because insect kinins are susceptible to fast enzymatic degradation by endogenous peptidases, they are severely limited in use as tools for pest control or endocrinological studies. Therefore, we also tested kinin analogs containing amino isobutyric acid (Aib) to enhance their potency and biostability. This peptidase-resistant analog represents an important lead in the development of biostable insect kinin analogs and may aid in the development of neuropeptide-based arthropod control strategies.

Watch this Scientific Journal Video about A Calcium Bioluminescence Assay for Functional Analysis of Mosquito Aedes aegypti and Tick Rhipicephalus microplus G Protein-coupled Receptors at JoVE.com

A Calcium Bioluminescence Assay for Functional Analysis of Mosquito Aedes aegypti and Tick Rhipicephalus microplus G Protein-coupled Receptors

Этот протокол содержит инструкции по клональной-клеточной селекции линии и анализа биолюминесценции кальция для анализа структуры и активности синтезированных членистоногих нейропептидов на их родственные GPCRs. Этот анализ может быть использован для deorphanization рецепторов и структура-активность для исследования отношения синтетический аналог дизайн и пептид / наркотиков привести открытие.

Анализ кальция Биолюминесценция для функционального анализа Mosquito ( Aedes aegypti) И Tick ( Rhipicephalus MicroPlus) G-белком рецепторы

Arthropod hormone receptors are potential targets for novel pesticides as they regulate many essential physiological and behavioral processes.  The ...

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A Calcium Bioluminescence Assay for Functional Analysis of Mosquito (Aedes aegypti) and Tick (Rhipicephalus microplus) G Protein-coupled Receptors

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