Localization of ryanodine receptors in smooth muscle.

Localization of ryanodine receptors in smooth muscle.
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兰尼碱受体在平滑肌中的定位。

DOI:
10.1161/01.res.82.2.175
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发表时间:
1998
影响因子:
20.1
通讯作者:
Somlyo,AV
Somlyo,AV
中科院分区:
医学1区
文献类型:
--
作者:
Lesh,RE;Nixon,GF;Fleischer,S;Airey,JA;Somlyo,AP;Somlyo,AV

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- 应用免疫荧光共聚焦显微镜和免疫电镜对主动脉和输精管平滑肌中的Ryanodine受体(RyR)进行了定位。用抗RyR抗体对主动脉平滑肌进行间接免疫荧光标记显示,除细胞核外,主动脉平滑肌的整个细胞质中均存在斑片状网络样染色模式,主要位于输精管的细胞周边。这种分布与肌浆网(SR)网络的分布一致,如两条平滑肌中亚铁氰化锇染色SR的电子显微照片所示。输精管平滑肌的免疫电镜显示抗RyR抗体定位于稀疏的中央和主要的外周SR元素。我们的结论是RyR-Ca 2+释放通道存在于主动脉和输精管平滑肌的外周和中央SR。这种分布是一致的可能性,这两个地区的释放网站,电子探针分析的结果表明,这表明在刺激平滑肌的外周和内部SR的Ca 2+含量的减少。肌醇1,4,5-三磷酸和ryanodine受体(本研究)的复杂分布与它们作为激动剂诱导的Ca 2+释放通道和Ca 2+火花,Ca 2+振荡和Ca 2+波的起源的作用是相容的。
—The ryanodine receptor (RyR) in aortic and vas deferens smooth muscle was localized using immunofluorescence confocal microscopy and immunoelectron microscopy. Indirect immunofluorescent labeling of aortic smooth muscle with anti-RyR antibodies showed a patchy network-like staining pattern throughout the cell cytoplasm, excluding nuclei, in aortic smooth muscle and localized predominantly to the cell periphery in the vas deferens. This distribution is consistent with that of the sarcoplasmic reticulum (SR) network, as demonstrated by electron micrographs of osmium ferrocyanide–stained SR in the two smooth muscles. Immunoelectron microscopy of vas deferens smooth muscle showed anti-RyR antibodies localized to both the sparse central and predominant peripheral SR elements. We conclude that RyR–Ca2+-release channels are present in both the peripheral and central SR in aortic and vas deferens smooth muscle. This distribution is consistent with the possibility that both regions are release sites, as indicated by results of electron probe analysis, which show a decrease in the Ca2+content of both peripheral and internal SR in stimulated smooth muscles. The complex distribution of inositol 1,4,5-trisphosphate and ryanodine receptors (present study) is compatible with their proposed roles as agonist-induced Ca2+-release channels and origins of Ca2+sparks, Ca2+oscillations, and Ca2+waves.
DOI: 10.1016/s0021-9258(18)61469-3
发表时间: 1987-03
期刊: The Journal of biological chemistry
影响因子: --
作者:
G. Meissner;Julia;Henderson
通讯作者: G. Meissner;Julia;Henderson
DOI: 10.1093/oxfordjournals.jbchem.a123339
发表时间: 1991-01-01
影响因子: 2.7
作者:
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通讯作者: SHIGEKAWA, M
肠平滑肌中肌醇 1,4,5-三磷酸和兰尼定受体的比较定位:一项分析亚分级研究。
DOI: --
发表时间: 1994
影响因子: 4.1
作者:
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通讯作者: T. Godfraind
DOI: --
发表时间: 1970
期刊: Comptes rendus de l'Association des anatomistes
影响因子: --
作者:
L. Gómez Oliveros
通讯作者: L. Gómez Oliveros
DOI: 10.1016/s0021-9258(19)75701-9
发表时间: 1987-02
期刊: The Journal of biological chemistry
影响因子: --
作者:
M. Inui;A. Saito;S. Fleischer
通讯作者: M. Inui;A. Saito;S. Fleischer