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ERK1/2 pathway involved in the expression of ETB receptors of the culturing smooth muscle cells of rat mesenteric artery

Luo, Guogang LU ; Cao, Y X ; Xu, Cang-Bao LU ; Ma, A Q and Edvinsson, Lars LU (2006) In Yao Xue Xue Bao 41(3). p.257-262
Abstract
AIM: To determine the involvement of extracellular signal-regulated kinase 1/2 (ERK1/2) pathway in the expression of endothelin receptor type B (ETB) during culture.

METHODS: SB386023, a specific inhibitor for ERK1/2 pathway, was used to define the intracellular signaling pathway for the upregulation of ETB receptors and sarafotoxin 6c (S6c), a selective agonist for ETB receptors, induced contraction in isolated rat superior mesenteric arteries. The contraction was recorded by a sensitive in vitro myograph and the receptor mRNA was quantified by a real-time PCR. The phosphorylated ERK1/2 proteins were analyzed by phosphoELISA assay.

RESULTS: S6c induced strong contractile responses of the artery after culture for 24 h,... (More)
AIM: To determine the involvement of extracellular signal-regulated kinase 1/2 (ERK1/2) pathway in the expression of endothelin receptor type B (ETB) during culture.

METHODS: SB386023, a specific inhibitor for ERK1/2 pathway, was used to define the intracellular signaling pathway for the upregulation of ETB receptors and sarafotoxin 6c (S6c), a selective agonist for ETB receptors, induced contraction in isolated rat superior mesenteric arteries. The contraction was recorded by a sensitive in vitro myograph and the receptor mRNA was quantified by a real-time PCR. The phosphorylated ERK1/2 proteins were analyzed by phosphoELISA assay.

RESULTS: S6c induced strong contractile responses of the artery after culture for 24 h, while there was no response to S6c in fresh vessel segments. The enhanced contractile response to S6c paralleled with an increase of mRNA for ETB receptors. The phosphorylated ERK1/2 proteins significantly increased after culture for 3 h. After co-culture with SB386023 for 24 h, S6c-induced contractions significantly decreased with reduction of Emax from (217 +/- 14) % to (127 +/- 23) % (P <0.01). This response paralleled with a decreased level of ETB receptor mRNA.

CONCLUSION: ERK1/2 pathway was involved in the up-regulation of ETB receptors on smooth muscle cells isolated from rat mesenteric arteries during culture. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Yao Xue Xue Bao
volume
41
issue
3
pages
257 - 262
publisher
Chinese Electronic Periodical Services
external identifiers
  • scopus:33646442464
ISSN
0513-4870
language
English
LU publication?
yes
id
83998e61-01c9-426b-8ec0-17f9446c753b (old id 1137029)
date added to LUP
2016-04-01 17:04:05
date last changed
2019-02-20 08:23:20
@article{83998e61-01c9-426b-8ec0-17f9446c753b,
  abstract     = {AIM: To determine the involvement of extracellular signal-regulated kinase 1/2 (ERK1/2) pathway in the expression of endothelin receptor type B (ETB) during culture.<br/><br>
METHODS: SB386023, a specific inhibitor for ERK1/2 pathway, was used to define the intracellular signaling pathway for the upregulation of ETB receptors and sarafotoxin 6c (S6c), a selective agonist for ETB receptors, induced contraction in isolated rat superior mesenteric arteries. The contraction was recorded by a sensitive in vitro myograph and the receptor mRNA was quantified by a real-time PCR. The phosphorylated ERK1/2 proteins were analyzed by phosphoELISA assay.<br/><br>
RESULTS: S6c induced strong contractile responses of the artery after culture for 24 h, while there was no response to S6c in fresh vessel segments. The enhanced contractile response to S6c paralleled with an increase of mRNA for ETB receptors. The phosphorylated ERK1/2 proteins significantly increased after culture for 3 h. After co-culture with SB386023 for 24 h, S6c-induced contractions significantly decreased with reduction of Emax from (217 +/- 14) % to (127 +/- 23) % (P &lt;0.01). This response paralleled with a decreased level of ETB receptor mRNA.<br/><br>
CONCLUSION: ERK1/2 pathway was involved in the up-regulation of ETB receptors on smooth muscle cells isolated from rat mesenteric arteries during culture.},
  author       = {Luo, Guogang and Cao, Y X and Xu, Cang-Bao and Ma, A Q and Edvinsson, Lars},
  issn         = {0513-4870},
  language     = {eng},
  number       = {3},
  pages        = {257--262},
  publisher    = {Chinese Electronic Periodical Services},
  series       = {Yao Xue Xue Bao},
  title        = {ERK1/2 pathway involved in the expression of ETB receptors of the culturing smooth muscle cells of rat mesenteric artery},
  volume       = {41},
  year         = {2006},
}