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Effect of the knockdown of Cabin1 on p53 in glomerular podocyte

Yueqiang Wen1, Peilan Zhou1, Lingling Liu2

  • 1a Department of Nephrology , The Second Affiliated Hospital, Guangzhou Medical University , Guangzhou , P.R. China and.

Journal of Receptor and Signal Transduction Research
|September 25, 2015
PubMed

Insights

Calcineurin binding protein 1 (Cabin1) increases during podocyte injury and may be a new target for treatment. Cabin1 knockdown reduces p53 expression in podocytes, suggesting a role in kidney disease progression.

Area of Science:

  • Nephrology
  • Molecular Biology
  • Cell Biology

Background:

  • Calcineurin binding protein 1 (Cabin1) inhibits calcineurin (CN) and regulates p53, affecting tumor cell apoptosis.
  • Podocyte injury is a key factor in kidney disease progression.
  • Understanding Cabin1's role in podocyte injury is crucial for developing new therapeutic strategies.

Purpose of the Study:

  • To investigate the expression of Cabin1 during podocyte injury.
  • To determine the relationship between Cabin1 and p53 in podocytes.
  • To explore Cabin1 as a potential therapeutic target for podocyte injury.

Main Methods:

  • Established a 5/6 nephrectomized rat model and used sham-operated rats as controls.
  • Utilized WT-1 to indicate Cabin1 localization in glomeruli.
  • Injured cultured podocytes with Angiotensin II (AngII) and treated with tacrolimus.
  • Detected protein expression and localization via western blot and immunofluorescence staining.
  • Knocked down Cabin1 using siRNA in cultured podocytes.

Main Results:

  • Cabin1 colocalized with WT-1 in podocyte nuclei in nephrectomized rats.
  • Cabin1 protein levels were significantly increased in nephrectomized rats and AngII-injured podocytes.
  • Cabin1 and p53 colocalized in podocyte nuclei, and Cabin1 knockdown decreased p53 expression.

Conclusions:

  • Cabin1 expression is significantly upregulated during podocyte injury.
  • Cabin1 knockdown leads to decreased p53 expression in cultured podocytes.
  • Cabin1 represents a potential novel target for investigating and treating podocyte injury.
Keywords:
Cabin1glomerular podocytep53proteinuriasiRNA

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