A novel signal transduction cascade involving direct physical interaction of the renin/prorenin receptor with the transcription factor promyelocytic zinc finger protein
A human renin/prorenin receptor (RER) has recently been cloned. To gain insight into the molecular function of the RER, we studied its signal transduction mechanisms. Initially, we found a ubiquitous and intracellular expression pattern of the human RER. Consistently, we observed several transcriptional start sites and a high promoter activity of the human RER. We could identify the transcription factor promyelocytic zinc finger (PLZF) protein as a direct protein interaction partner of the C-terminal domain of the RER by yeast 2-hybrid screening and coimmunoprecipitation. Coimmunoprecipitation experiments also indicated homodimerization of the RER. On activation of the RER by renin, PLZF is translocated into the nucleus and represses transcription of the RER itself, thereby creating a very short negative feedback loop, but activates transcription of the p85alpha subunit of the phosphatidylinositol-3 kinase (PI3K-p85alpha). Small interfering RNA against the RER abolished these effects. A PLZF cis-element in the RER promoter was identified by site-directed mutagenesis and electrophoretic mobility-shift assay. Renin stimulation caused a 6-fold recruitment of PLZF to this promoter region as shown by chromatin immunoprecipitation. Moreover, renin stimulation of rat H9c2 cardiomyoblasts induced an increase of cell number and a decrease of apoptosis. These effects were partly abolished by PI3K inhibition and completely abrogated by small interfering RNA against PLZF. Finally, experiments in PLZF knockout mice confirmed the role of PLZF as an upstream regulator of RER and PI3K-p85alpha. Our data demonstrate the existence of a novel signal transduction pathway involving the ligand renin, RER, and the transcription factor PLZF, which is of physiological and putative pathophysiological relevance.
| Errataetall: |
CommentIn: Circ Res. 2006 Dec 8;99(12):1285-6. - PMID 17158342 |
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| Medienart: |
E-Artikel |
| Erscheinungsjahr: |
2006 |
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| Erschienen: |
2006 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:99 |
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| Enthalten in: |
Circulation research - 99(2006), 12 vom: 08. Dez., Seite 1355-66 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Schefe, Jan H [VerfasserIn] |
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| Anmerkungen: |
Date Completed 05.01.2007 Date Revised 23.02.2022 published: Print-Electronic CommentIn: Circ Res. 2006 Dec 8;99(12):1285-6. - PMID 17158342 Citation Status MEDLINE |
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| Förderinstitution / Projekttitel: |
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NLM166375934 |
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| 100 | 1 | |a Schefe, Jan H |e verfasserin |4 aut | |
| 245 | 1 | 2 | |a A novel signal transduction cascade involving direct physical interaction of the renin/prorenin receptor with the transcription factor promyelocytic zinc finger protein |
| 264 | 1 | |c 2006 | |
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| 500 | |a Date Completed 05.01.2007 | ||
| 500 | |a Date Revised 23.02.2022 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a CommentIn: Circ Res. 2006 Dec 8;99(12):1285-6. - PMID 17158342 | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a A human renin/prorenin receptor (RER) has recently been cloned. To gain insight into the molecular function of the RER, we studied its signal transduction mechanisms. Initially, we found a ubiquitous and intracellular expression pattern of the human RER. Consistently, we observed several transcriptional start sites and a high promoter activity of the human RER. We could identify the transcription factor promyelocytic zinc finger (PLZF) protein as a direct protein interaction partner of the C-terminal domain of the RER by yeast 2-hybrid screening and coimmunoprecipitation. Coimmunoprecipitation experiments also indicated homodimerization of the RER. On activation of the RER by renin, PLZF is translocated into the nucleus and represses transcription of the RER itself, thereby creating a very short negative feedback loop, but activates transcription of the p85alpha subunit of the phosphatidylinositol-3 kinase (PI3K-p85alpha). Small interfering RNA against the RER abolished these effects. A PLZF cis-element in the RER promoter was identified by site-directed mutagenesis and electrophoretic mobility-shift assay. Renin stimulation caused a 6-fold recruitment of PLZF to this promoter region as shown by chromatin immunoprecipitation. Moreover, renin stimulation of rat H9c2 cardiomyoblasts induced an increase of cell number and a decrease of apoptosis. These effects were partly abolished by PI3K inhibition and completely abrogated by small interfering RNA against PLZF. Finally, experiments in PLZF knockout mice confirmed the role of PLZF as an upstream regulator of RER and PI3K-p85alpha. Our data demonstrate the existence of a novel signal transduction pathway involving the ligand renin, RER, and the transcription factor PLZF, which is of physiological and putative pathophysiological relevance | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 7 | |a ATP6AP2 protein, human |2 NLM | |
| 650 | 7 | |a DNA-Binding Proteins |2 NLM | |
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| 700 | 1 | |a Menk, Mario |e verfasserin |4 aut | |
| 700 | 1 | |a Reinemund, Jana |e verfasserin |4 aut | |
| 700 | 1 | |a Effertz, Karin |e verfasserin |4 aut | |
| 700 | 1 | |a Hobbs, Robin M |e verfasserin |4 aut | |
| 700 | 1 | |a Pandolfi, Pier Paolo |e verfasserin |4 aut | |
| 700 | 1 | |a Ruiz, Patricia |e verfasserin |4 aut | |
| 700 | 1 | |a Unger, Thomas |e verfasserin |4 aut | |
| 700 | 1 | |a Funke-Kaiser, Heiko |e verfasserin |4 aut | |
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