Role of angiotensin II in activation of the JAK/STAT pathway induced by acute pressure overload in the rat heart

Jing Pan, Keiichi Fukuda, Hiroaki Kodama, Shinji Makino, Toshiyuki Takahashi, Motoaki Sano, Shingo Hori, Satoshi Ogawa

Research output: Contribution to journalArticle

117 Citations (Scopus)

Abstract

This study was designed to determine whether the JAK/STAT (indicating just another kinase/signal transducer and activator of transcription) pathway is activated n cardiac hypertrophy induced in vivo by pressure overload in rats and to demonstrate whether angiotensin II is involved in the activation of the JAK/STAT pathway. Acute pressure overload was produced by constricting the abdominal aorta of Wistar rats. Immunoprecipitation-Western blot analysis revealed that pressure overload activated JAK1, JAK2, and Tyk2 as early as 5 minutes and that STAT1, STAT2, and STAT3 were tyrosine-phosphorylated rapidly after exposure to the pressure overload. Phosphorylation of STAT1 and STAT2 peaked in the early stage at 5 to 15 minutes, whereas that of STAT3 peaked in the late stage at 60 minutes. Gel mobility shift of the interferon gamma activation site interferon alpha-stimulating response element was observed immediately after the aortic banding, whereas the band of sis-inducing element was shifted in the late stage at 60 minutes. Both cilazapril (angiotensin II-converting enzyme inhibitor) and E4177 (angiotensin II type 1 [AT1] receptor antagonist) significantly suppressed the phosphorylation of Tyk2 and partially inhibited the phosphorylation of JAK2, but neither affected JAK1. Coimmunoprecipitation of the AT1 receptor with JAK2 or Tyk2 was clearly observed at 5 minutes and peaked at 15 minutes (20-fold the control value). These results indicate that the JAK/STAT pathway is activated by acute pressure overload in rats and that angiotensin II is involved in activating Tyk2, and partially activating JAK2, via the AT1 receptor. Both angiotensin II-dependent and -independent pathways take part in activating the JAK/STAT pathway in the pressure-overloaded rat heart.

Original languageEnglish
Pages (from-to)611-617
Number of pages7
JournalCirculation Research
Volume81
Issue number4
Publication statusPublished - 1997

Fingerprint

Transducers
Angiotensin II
Phosphotransferases
Pressure
Angiotensin Type 1 Receptor
Phosphorylation
Cilazapril
Angiotensin II Type 1 Receptor Blockers
Abdominal Aorta
Cardiomegaly
Response Elements
Immunoprecipitation
Angiotensin-Converting Enzyme Inhibitors
Interferon-alpha
Interferon-gamma
Tyrosine
Wistar Rats
Western Blotting
Gels

Keywords

  • Angiotensin II
  • JAK/STAT pathway
  • Myocardial hypertrophy
  • Pressure overload
  • Signal transduction

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine

Cite this

Role of angiotensin II in activation of the JAK/STAT pathway induced by acute pressure overload in the rat heart. / Pan, Jing; Fukuda, Keiichi; Kodama, Hiroaki; Makino, Shinji; Takahashi, Toshiyuki; Sano, Motoaki; Hori, Shingo; Ogawa, Satoshi.

In: Circulation Research, Vol. 81, No. 4, 1997, p. 611-617.

Research output: Contribution to journalArticle

Pan, Jing ; Fukuda, Keiichi ; Kodama, Hiroaki ; Makino, Shinji ; Takahashi, Toshiyuki ; Sano, Motoaki ; Hori, Shingo ; Ogawa, Satoshi. / Role of angiotensin II in activation of the JAK/STAT pathway induced by acute pressure overload in the rat heart. In: Circulation Research. 1997 ; Vol. 81, No. 4. pp. 611-617.
@article{9db016013e5c460492b779439a119800,
title = "Role of angiotensin II in activation of the JAK/STAT pathway induced by acute pressure overload in the rat heart",
abstract = "This study was designed to determine whether the JAK/STAT (indicating just another kinase/signal transducer and activator of transcription) pathway is activated n cardiac hypertrophy induced in vivo by pressure overload in rats and to demonstrate whether angiotensin II is involved in the activation of the JAK/STAT pathway. Acute pressure overload was produced by constricting the abdominal aorta of Wistar rats. Immunoprecipitation-Western blot analysis revealed that pressure overload activated JAK1, JAK2, and Tyk2 as early as 5 minutes and that STAT1, STAT2, and STAT3 were tyrosine-phosphorylated rapidly after exposure to the pressure overload. Phosphorylation of STAT1 and STAT2 peaked in the early stage at 5 to 15 minutes, whereas that of STAT3 peaked in the late stage at 60 minutes. Gel mobility shift of the interferon gamma activation site interferon alpha-stimulating response element was observed immediately after the aortic banding, whereas the band of sis-inducing element was shifted in the late stage at 60 minutes. Both cilazapril (angiotensin II-converting enzyme inhibitor) and E4177 (angiotensin II type 1 [AT1] receptor antagonist) significantly suppressed the phosphorylation of Tyk2 and partially inhibited the phosphorylation of JAK2, but neither affected JAK1. Coimmunoprecipitation of the AT1 receptor with JAK2 or Tyk2 was clearly observed at 5 minutes and peaked at 15 minutes (20-fold the control value). These results indicate that the JAK/STAT pathway is activated by acute pressure overload in rats and that angiotensin II is involved in activating Tyk2, and partially activating JAK2, via the AT1 receptor. Both angiotensin II-dependent and -independent pathways take part in activating the JAK/STAT pathway in the pressure-overloaded rat heart.",
keywords = "Angiotensin II, JAK/STAT pathway, Myocardial hypertrophy, Pressure overload, Signal transduction",
author = "Jing Pan and Keiichi Fukuda and Hiroaki Kodama and Shinji Makino and Toshiyuki Takahashi and Motoaki Sano and Shingo Hori and Satoshi Ogawa",
year = "1997",
language = "English",
volume = "81",
pages = "611--617",
journal = "Circulation Research",
issn = "0009-7330",
publisher = "Lippincott Williams and Wilkins",
number = "4",

}

TY - JOUR

T1 - Role of angiotensin II in activation of the JAK/STAT pathway induced by acute pressure overload in the rat heart

AU - Pan, Jing

AU - Fukuda, Keiichi

AU - Kodama, Hiroaki

AU - Makino, Shinji

AU - Takahashi, Toshiyuki

AU - Sano, Motoaki

AU - Hori, Shingo

AU - Ogawa, Satoshi

PY - 1997

Y1 - 1997

N2 - This study was designed to determine whether the JAK/STAT (indicating just another kinase/signal transducer and activator of transcription) pathway is activated n cardiac hypertrophy induced in vivo by pressure overload in rats and to demonstrate whether angiotensin II is involved in the activation of the JAK/STAT pathway. Acute pressure overload was produced by constricting the abdominal aorta of Wistar rats. Immunoprecipitation-Western blot analysis revealed that pressure overload activated JAK1, JAK2, and Tyk2 as early as 5 minutes and that STAT1, STAT2, and STAT3 were tyrosine-phosphorylated rapidly after exposure to the pressure overload. Phosphorylation of STAT1 and STAT2 peaked in the early stage at 5 to 15 minutes, whereas that of STAT3 peaked in the late stage at 60 minutes. Gel mobility shift of the interferon gamma activation site interferon alpha-stimulating response element was observed immediately after the aortic banding, whereas the band of sis-inducing element was shifted in the late stage at 60 minutes. Both cilazapril (angiotensin II-converting enzyme inhibitor) and E4177 (angiotensin II type 1 [AT1] receptor antagonist) significantly suppressed the phosphorylation of Tyk2 and partially inhibited the phosphorylation of JAK2, but neither affected JAK1. Coimmunoprecipitation of the AT1 receptor with JAK2 or Tyk2 was clearly observed at 5 minutes and peaked at 15 minutes (20-fold the control value). These results indicate that the JAK/STAT pathway is activated by acute pressure overload in rats and that angiotensin II is involved in activating Tyk2, and partially activating JAK2, via the AT1 receptor. Both angiotensin II-dependent and -independent pathways take part in activating the JAK/STAT pathway in the pressure-overloaded rat heart.

AB - This study was designed to determine whether the JAK/STAT (indicating just another kinase/signal transducer and activator of transcription) pathway is activated n cardiac hypertrophy induced in vivo by pressure overload in rats and to demonstrate whether angiotensin II is involved in the activation of the JAK/STAT pathway. Acute pressure overload was produced by constricting the abdominal aorta of Wistar rats. Immunoprecipitation-Western blot analysis revealed that pressure overload activated JAK1, JAK2, and Tyk2 as early as 5 minutes and that STAT1, STAT2, and STAT3 were tyrosine-phosphorylated rapidly after exposure to the pressure overload. Phosphorylation of STAT1 and STAT2 peaked in the early stage at 5 to 15 minutes, whereas that of STAT3 peaked in the late stage at 60 minutes. Gel mobility shift of the interferon gamma activation site interferon alpha-stimulating response element was observed immediately after the aortic banding, whereas the band of sis-inducing element was shifted in the late stage at 60 minutes. Both cilazapril (angiotensin II-converting enzyme inhibitor) and E4177 (angiotensin II type 1 [AT1] receptor antagonist) significantly suppressed the phosphorylation of Tyk2 and partially inhibited the phosphorylation of JAK2, but neither affected JAK1. Coimmunoprecipitation of the AT1 receptor with JAK2 or Tyk2 was clearly observed at 5 minutes and peaked at 15 minutes (20-fold the control value). These results indicate that the JAK/STAT pathway is activated by acute pressure overload in rats and that angiotensin II is involved in activating Tyk2, and partially activating JAK2, via the AT1 receptor. Both angiotensin II-dependent and -independent pathways take part in activating the JAK/STAT pathway in the pressure-overloaded rat heart.

KW - Angiotensin II

KW - JAK/STAT pathway

KW - Myocardial hypertrophy

KW - Pressure overload

KW - Signal transduction

UR - http://www.scopus.com/inward/record.url?scp=0030765570&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030765570&partnerID=8YFLogxK

M3 - Article

VL - 81

SP - 611

EP - 617

JO - Circulation Research

JF - Circulation Research

SN - 0009-7330

IS - 4

ER -