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RAS-association domain family 1A regulates the abnormal cell proliferation in psoriasis via inhibition of

Jinjing Jia1,2,3, Ning Wang4, Yan Zheng4

  • 1State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.

Journal of Cellular and Molecular Medicine
|May 7, 2021
PubMed

Insights

RAS-association domain family 1A (RASSF1A) may treat psoriasis by reducing Yes-associated protein (YAP) levels. Inhibiting RASSF1A methylation or boosting its expression could offer new psoriasis therapies.

Area of Science:

  • Dermatology
  • Molecular Biology
  • Oncology

Background:

  • Psoriasis is a chronic inflammatory skin condition with unknown causes.
  • RAS-association domain family 1A (RASSF1A) is an upstream negative regulator.
  • Yes-associated protein (YAP) is a key factor in cell growth and proliferation.

Purpose of the Study:

  • To investigate the role of RASSF1A in psoriasis pathogenesis.
  • To analyze the effect of RASSF1A on YAP in psoriasis.
  • To explore potential therapeutic strategies targeting RASSF1A methylation and expression.

Main Methods:

  • Analyzed RASSF1A expression and methylation in psoriatic skin lesions from patients and a mouse model.
  • Utilized a human keratinocyte cell model and an imiquimod-induced mouse model of psoriasis.
  • Administered a methylation inhibitor (5-Aza-CdR) and RASSF1A-overexpressing lentivirus to assess effects on RASSF1A/YAP signaling and disease markers.

Main Results:

  • Increased RASSF1A methylation correlated with decreased RASSF1A expression in psoriasis.
  • RASSF1A upregulation (via demethylation or lentivirus) reduced YAP expression.
  • Interventions improved skin lesions, reduced keratinocyte proliferation, induced G0/G1 cell cycle arrest, and decreased inflammation (cytokines, ERK, STAT3, NF-κB pathways).

Conclusions:

  • RASSF1A inhibits YAP expression, suggesting a therapeutic role in psoriasis.
  • Targeting RASSF1A methylation or expression may be a viable strategy for psoriasis treatment.
  • Further research into RASSF1A-targeted therapies could benefit psoriasis patients.
Keywords:
RAS-association domain familyYes-associated proteinabnormal cell proliferationmethylationpsoriasis

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