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Mechanism of Kemeng Fang's Inhibition of Podocyte Apoptosis in Rats with Membranous Nephropathy through the PI3K/AKT Signaling Pathway
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Mechanism of Kemeng Fang's Inhibition of Podocyte Apoptosis in Rats with Membranous Nephropathy through the PI3K/AKT Signaling Pathway

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CD2-associated protein participates in podocyte apoptosis via PI3K/Akt signaling pathway

Qi Ren1, Sheng You Yu2

  • 1a Department of Pediatrics , Allergy, Immunology and Rheumatology, Guangzhou Medical University , Guangdong , China and.

Journal of Receptor and Signal Transduction Research
|November 21, 2015
PubMed

Insights

CD2-associated protein (CD2AP) is crucial for podocyte health and preventing proteinuria. This study reveals CD2AP activates PI3K/AKT signaling, vital for maintaining podocyte integrity and regulating apoptosis.

Area of Science:

  • Nephrology
  • Molecular Biology
  • Cell Biology

Background:

  • CD2-associated protein (CD2AP) is a key slit diaphragm protein essential for podocyte integrity and preventing proteinuria.
  • CD2AP acts as an adaptor protein, regulating podocyte cytoskeletal structure and extracellular-to-intracellular signaling.
  • CD2AP deficiency or abnormalities cause podocyte dysfunction and proteinuric glomerular diseases.

Purpose of the Study:

  • To investigate the role of CD2AP in activating phosphoinositide 3-OH kinase (PI3K)/AKT signaling in podocytes.
  • To elucidate how CD2AP-mediated AKT activity influences podocyte function and apoptosis.

Main Methods:

  • Investigated the interaction between CD2AP and the p85 regulatory subunit of PI3K.
  • Assessed the recruitment of PI3K to the plasma membrane mediated by CD2AP.
  • Analyzed the impact of CD2AP on PI3K-dependent AKT signaling and downstream targets like GSK3β.
  • Examined the effects of specific inhibitors (PAN, LY294002) on podocyte apoptosis.

Main Results:

  • CD2AP and PI3K p85 subunit co-localize and recruit PI3K to the plasma membrane.
  • CD2AP activates PI3K-dependent AKT signaling in podocytes.
  • CD2AP-mediated AKT activity regulates complex cellular processes, including GSK3β phosphorylation.
  • PAN treatment reduces Akt phosphorylation of GSK3β, and LY294002 promotes PAN-induced podocyte apoptosis.

Conclusions:

  • Activation of PI3K/AKT signaling is essential for maintaining podocyte functional integrity.
  • The PI3K/Akt signaling pathway plays a significant role in regulating podocyte apoptosis.
  • CD2AP is a critical regulator of PI3K/AKT signaling, impacting podocyte health and disease.
Keywords:
CD2APPI3K/AktPodocyte

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