Calmodulin-stimulated cyclic nucleotide phosphodiesterase (PDE1C) is induced in human arterial smooth muscle cells of the synthetic, proliferative phenotype

Sergei D. Rybalkin, Karin E. Bornfeldt, William K. Sonnenburg, Irina G. Rybalkina, Keith S. Kwak, Kim Hanson, Edwin G. Krebs, Joseph A. Beavo

Research output: Contribution to journalArticle

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Abstract

The diversity among cyclic nucleotide phosphodiesterases provides multiple mechanisms for regulation of cAMP and cGMP in the cardiovascular system. Here we report that a calmodulin-stimulated phosphodiesterase (PDE1C) is highly expressed in proliferating human arterial smooth muscle cells (SMCs) in primary culture, but not in the quiescent SMCs of intact human aorta. High levels of PDE1C were found in primary cultures of SMCs derived from explants of human newborn and adult aortas, and in SMCs cultured from severe atherosclerotic lesions. PDE1C was the major cAMP hydrolytic activity in these SMCs. PDE expression patterns in primary SMC cultures from monkey and rat aortas were different from those from human cells. In monkey, high expression of PDE1B was found, whereas PDE1C was not detected. In rat SMCs, PDE1A was the only detectable calmodulin-stimulated PDE. These findings suggest that many of the commonly used animal species may not provide good models for studying the roles of PDEs in proliferation of human SMCs. More importantly, the observation that PDE1C is induced only in proliferating SMCs suggests that it may be both an indicator of proliferation and a possible target for treatment of atherosclerosis or restenosis after angioplasty, conditions in which proliferation of arterial SMCs is negatively modulated by cyclic nucleotides.

Original languageEnglish (US)
Pages (from-to)2611-2621
Number of pages11
JournalJournal of Clinical Investigation
Volume100
Issue number10
DOIs
StatePublished - Nov 15 1997

Fingerprint

Cyclic Nucleotides
Phosphoric Diester Hydrolases
Calmodulin
Smooth Muscle Myocytes
Phenotype
Aorta
Haplorhini
Type 1 Cyclic Nucleotide Phosphodiesterases
Cardiovascular System
Angioplasty
Atherosclerosis
Cell Culture Techniques

Keywords

  • Angioplasty
  • Atherosclerosis
  • Ion-exchange chromatography
  • RNA probes
  • Western blotting

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Calmodulin-stimulated cyclic nucleotide phosphodiesterase (PDE1C) is induced in human arterial smooth muscle cells of the synthetic, proliferative phenotype. / Rybalkin, Sergei D.; Bornfeldt, Karin E.; Sonnenburg, William K.; Rybalkina, Irina G.; Kwak, Keith S.; Hanson, Kim; Krebs, Edwin G.; Beavo, Joseph A.

In: Journal of Clinical Investigation, Vol. 100, No. 10, 15.11.1997, p. 2611-2621.

Research output: Contribution to journalArticle

Rybalkin, Sergei D. ; Bornfeldt, Karin E. ; Sonnenburg, William K. ; Rybalkina, Irina G. ; Kwak, Keith S. ; Hanson, Kim ; Krebs, Edwin G. ; Beavo, Joseph A. / Calmodulin-stimulated cyclic nucleotide phosphodiesterase (PDE1C) is induced in human arterial smooth muscle cells of the synthetic, proliferative phenotype. In: Journal of Clinical Investigation. 1997 ; Vol. 100, No. 10. pp. 2611-2621.
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