Use of recombinant calpain-2 siRNA adenovirus to assess calpain-2 modulation of lung endothelial cell migration and proliferation

Kai Qiu, Yunchao Su, Edward R. Block

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

In this study, we developed an adenoviral vector harboring calpain-2 siRNA expression unit in which sense and anti-sense strands composing the siRNA duplex were connected by a loop and transcribed into a siRNA in porcine pulmonary artery endothelial cells (PAEC). We screened one efficient adenoviral vector Ad/si-m187 and found that Ad/si-m187 successfully exerted a gene knockdown effect on calpain-2 mRNA transcription and protein expression levels. The protein content of calpain-2 was reduced by 30%-80% in PAEC infected with Ad/si-m187 in comparison to a control adenoviral vector Ad/si-luc. The mRNA levels of calpain-2 were measured by real-time PCR and were decreased by 60%-100% and in a dose dependent manner. In correspondence to silencing calpain-2 gene expression, calpain-2 activity was decreased significantly. We further evaluated the role of calpain-2 in endothelial cell migration and proliferation. PAEC infected with Ad/si-m187 displayed impaired migration and cell proliferation in comparison to cells infected with control adenoviral vector (Ad/si-luc). These results indicate that adenoviral vector harboring calpain-2 siRNA expression unit is a valuable tool to study the biology of calpains and that calpain-2 plays an important role in lung endothelial cell migration and proliferation.

Original languageEnglish (US)
Pages (from-to)69-78
Number of pages10
JournalMolecular and Cellular Biochemistry
Volume292
Issue number1-2
DOIs
StatePublished - Nov 1 2006
Externally publishedYes

Keywords

  • Adenovirus
  • Angiogenesis
  • Calpains
  • Endothelium
  • SiRNA

ASJC Scopus subject areas

  • Molecular Biology
  • Clinical Biochemistry
  • Cell Biology

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