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[Changes in expression of PYCARD gene and its transcript variant mRNA in peripheral blood mononuclear cells of

Wan-tai Dang, Wen-guang Xie, Yan Cai

    Sichuan Da Xue Xue Bao. Yi Xue Ban = Journal of Sichuan University. Medical Science Edition
    |March 27, 2015
    PubMed

    Insights

    PYCARD gene and protein expression are elevated in primary gout patients, indicating a significant role in regulating inflammatory responses. This finding highlights PYCARD as a potential biomarker for gout-related inflammation.

    Area of Science:

    • Immunology
    • Molecular Biology
    • Genetics

    Background:

    • Gout is a form of inflammatory arthritis characterized by hyperuricemia and monosodium urate crystal deposition.
    • The inflammatory pathways involved in gout pathogenesis are complex and not fully understood.
    • PYCARD (PYRIN-PAAD-DAPIN domain containing) is a gene involved in inflammatory signaling.

    Purpose of the Study:

    • To investigate the expression levels of the PYCARD gene and its mRNA variants in peripheral blood mononuclear cells (PBMCs) of patients with primary gout (PG).
    • To explore the role of PYCARD in the inflammatory processes associated with primary gout.

    Main Methods:

    • Gene and mRNA expression of PYCARD and its variants were quantified using reverse transcription-polymerase chain reaction (RT-PCR).
    • Protein expression of PYCARD and NF-kappaB was assessed via Western blot.
    • Comparisons were made between patients with acute phase PG (APPG), non-acute phase PG (NAPPG), and healthy controls (HC).
    • Correlations with routine blood tests and uric acid levels were analyzed.

    Main Results:

    • PYCARD gene and PYCARD-1,-2 mRNA expression were significantly higher in both APPG and NAPPG groups compared to HC.
    • Specific PYCARD transcript variants (2x and 2y mRNA) were elevated in NAPPG patients compared to HC and APPG.
    • PYCARD and NF-kappaB protein levels were significantly increased in PG patients versus HC.
    • PYCARD-2 mRNA expression positively correlated with granulocyte counts in the NAPPG group.

    Conclusions:

    • Abnormal expression of PYCARD gene, its transcript variants, and PYCARD protein is observed in primary gout patients.
    • These findings suggest that PYCARD plays a crucial role in modulating the inflammatory response in primary gout.
    • PYCARD may serve as a potential therapeutic target or biomarker for gout.
    Abstract

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