Expression of the Human 5-Hydroxytryptamine1A Receptor in Sf9 Cells
Expression of the Human 5-Hydroxytryptamine1A Receptor in Sf9 Cells
复制标题
人 5-羟色胺 1A 受体在 Sf9 细胞中的表达
DOI:
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发表时间:
1995
影响因子:
4.8
通讯作者:
D. Manning
中科院分区:
文献类型:
--
作者:
P. Butkerait;Y. Zheng;H. Hallak;T. Graham;Heather A. Miller;K. Burris;P. Molinoff;D. Manning
The possibility that Spodoptera frugiperda (Sf9) cells can provide an intact cell setting for reconstitution of the human 5-hydroxytryptamine1A (5-HT1A) receptor with mammalian G protein subunits was explored. The 5-HT1A receptor was found to assume an uncoupled phenotype when expressed alone in Sf9 cells at relatively high levels (5-34 pmol of receptor/mg of membrane protein), i.e. agonist-binding to the receptor was characterized by a relatively high Kd and an insensitivity to GTP. Co-expression of the receptor with members of the αi “family” together with various combinations of β1 and γ subunits increased the affinity for agonists to that observed for the coupled form of receptor in mammalian cells, concomitant with conferrance of guanosine 5′-(β,γ-imino)triphosphate sensitivity. The agonists employed were [3H]8-hydroxy-N, N-dipropyl-2-aminotetralin ([3H] 8-OH-DPAT) and [125I]R(+)-trans-8-hydroxy-2-[N-n-propyl-N-(3′-iodo-2′-propenyl)amino]tetralin ([125I]8-OH-PIPAT). The binding of an antagonist, [125I]4-(2′-methoxyphenyl)-1-[2′-[N-(2″-pyridinyl)-p-iodobenzamido]ethyl] piperazine ([125I]p-MPPI), was unaffected by co-expression of G protein subunits. Both α and βγ subunits were required for optimal coupling. No differences were evident among αi1, αi2, αi3, αo, and αz when expressed with β1γ2 in this regard, nor among most permutations of β1γ subunits when expressed with αi1 (β1γ2 ≈ β1γ3 ≈ β1γ5 > β1γ1). αs and αq expressed with β1γ2 did not participate in coupling. These data support the conclusion that normal interactions between a mammalian receptor and a select array of G proteins can be established in intact Sf9 cells, and extend previous observations of 5-HT1A receptor coupling to Go and the pertussis toxin-insensitive G protein Gz.
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DOI:
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发表时间:
1993
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Kisselev,O;Gautam,N
通讯作者:
Gautam,N
DOI:
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发表时间:
1993-07
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. Hepler;T. Kozasa;A. Smrcka;Melvin I. Simon;S. Rhee;P. Sternweis;A. Gilman
通讯作者:
J. Hepler;T. Kozasa;A. Smrcka;Melvin I. Simon;S. Rhee;P. Sternweis;A. Gilman
DOI:
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发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Cali,JJ;Balcueva,EA;Rybalkin,I;Robishaw,JD
通讯作者:
Robishaw,JD
影响因子:
5.8
作者:
Schlegel,JR;Peroutka,SJ
通讯作者:
Peroutka,SJ
DOI:
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发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Parker,EM;Kameyama,K;Higashijima,T;Ross,EM
通讯作者:
Ross,EM