Mobilization of Ca2+ from intracellular stores in transfected neuro2a cells by activation of multiple opioid receptor subtypes.
Mobilization of Ca2+ from intracellular stores in transfected neuro2a cells by activation of multiple opioid receptor subtypes.
复制标题
通过激活多种阿片受体亚型,从转染的 Neuro2a 细胞的细胞内储存中调动 Ca2。
DOI:
10.1016/s0006-2952(97)00243-8
复制
发表时间:
1997
影响因子:
5.8
通讯作者:
Loh,HH
中科院分区:
文献类型:
--
作者:
Spencer,RJ;Jin,W;Thayer,SA;Chakrabarti,S;Law,PY;Loh,HH
In neuronal cell lines, activation of opioid receptors has been shown to mobilize intracellular Ca2+stores. In this report, we describe the excitatory actions of opioid agonists on murine neuroblastoma neuro2acells stably expressing either δ, μ, or κ opioid receptors. Fura-2-based digital imaging was used to record opioid-induced increases in intracellular Ca2+concentration ([Ca2+],). Repeated challenges of δ, μ, or κ opioid receptor expressing cells with 100 nM [d-Ala2,d-Leu5]-enkephalin (DADLE), [d-Ala2,N-Me-Phe4,Gly-ol]-enkephalin (DAMGO), or trans-(±)-3,4-dichloroN-methyl-N-(2-[l-pyrollidinyl] cyclohexyl) benzene acetamide (U-50488H), respectively, elicited reproducible Ca2+responses. Non-transfected neuro2acells did not respond to opioid agonists. Removal of extracellular Ca2+from the bath prior to and during agonist challenge did not affect significantly the agonist-evoked increase in [Ca2+]i, indicating that the response resulted from the release of Ca2+from intracellular stores. Naloxone reversibly inhibited responses in all three cell lines, confirming that they were mediated by opioid receptors. Expression of cloned opioid receptors in neuro2acells, coupled with digital [Ca2+]iimaging, provides a model system for the study of opioid receptors and opioid-activated signaling processes. The fact that all three receptors coupled to the same intracellular signaling mechanism suggests that the primary functional difference between opioid responses in vivo results from their selective localization.
登录
查看更多内容
DOI:
10.1074/jbc.270.28.16630
发表时间:
1995
期刊:
The Journal of Biological Chemistry
影响因子:
--
作者:
S. Chueh;S. Song;T. Liu
通讯作者:
T. Liu
影响因子:
3.6
作者:
Christie,MJ;Williams,JT;North,RA
通讯作者:
North,RA
DOI:
--
发表时间:
1994
期刊:
The Journal of pharmacology and experimental therapeutics
影响因子:
--
作者:
Tang,T;Kiang,JG;Cox,BM
通讯作者:
Cox,BM
DOI:
--
发表时间:
1985-03
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
G. Grynkiewicz;M. Poenie;Roger Y. TsienB
通讯作者:
G. Grynkiewicz;M. Poenie;Roger Y. TsienB
影响因子:
2.9
作者:
A. Fields;M. Gafni;Y. Oron;Y. Sarne
通讯作者:
Y. Sarne