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Inhibition of rheumatoid synovial fibroblast proliferation by antisense oligonucleotides targeting proliferating cell

Y Morita1, N Kashihara, M Yamamura

  • 1Okayama University Medical School, Shikata-cho, Japan.

Arthritis and Rheumatism
|July 1, 1997
PubMed
Abstract

Insights

Antisense oligonucleotides targeting proliferating cell nuclear antigen (PCNA) effectively inhibited rheumatoid arthritis synovial cell growth. This suggests a potential new therapeutic strategy for rheumatoid arthritis by suppressing PCNA expression.

Area of Science:

  • Molecular Biology
  • Immunology
  • Rheumatology

Background:

  • Rheumatoid arthritis (RA) involves synovial cell hyperplasia.
  • Identifying novel therapeutic targets for RA is crucial.

Purpose of the Study:

  • To assess the feasibility of using antisense oligonucleotides (ASOs) to inhibit synovial cell proliferation in RA.
  • To investigate ASOs targeting proliferating cell nuclear antigen (PCNA) mRNA.

Main Methods:

  • Fibroblast-like synoviocytes from RA patients were cultured and stimulated with IL-1beta.
  • Cells were treated with ASOs or sense oligonucleotides targeting PCNA mRNA.
  • Cell proliferation was measured by 3H-thymidine incorporation.
  • PCNA mRNA and protein expression were analyzed using RT-PCR and immunohistochemistry.

Main Results:

  • ASOs targeting PCNA significantly inhibited IL-1beta-stimulated fibroblast proliferation.
  • Sense oligonucleotides showed no inhibitory effect.
  • PCNA mRNA and protein levels were reduced by ASOs, confirming the antisense mechanism.

Conclusions:

  • Antisense strategies targeting PCNA demonstrate antiproliferative effects on RA synovial cells.
  • Suppression of PCNA via antisense mechanisms holds therapeutic potential for rheumatoid arthritis.

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