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Assessment of Mitochondrial Functions and Cell Viability in Renal Cells Overexpressing Protein Kinase C Isozymes
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Cyclic adenosine monophosphate protects renal cell lines against amphotericin B toxicity in a PKA-independent manner

A F Ferreira1, F D França1, J V Rossoni2

  • 1a Departamento de Bioquímica e Imunologia , Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte , MG , Brazil .

Drug and Chemical Toxicology
|February 19, 2015
PubMed

Insights

Cyclic adenosine monophosphate (cAMP) protects kidney cells from Amphotericin B-induced toxicity. This study found that cAMP prevents renal cell death independently of protein kinase A (PKA), offering a novel protective strategy.

Area of Science:

  • Nephrology
  • Pharmacology
  • Cell Biology

Background:

  • Amphotericin B (AmB) is crucial for treating systemic fungal infections but causes significant nephrotoxicity.
  • This drug-induced kidney injury contributes to a substantial portion of acute kidney injuries in critical care settings.
  • Cyclic adenosine monophosphate (cAMP) has demonstrated protective effects on kidney cells against various injuries.

Purpose of the Study:

  • To investigate the potential of cAMP in preventing Amphotericin B-induced cell death in renal cell lines.
  • To determine the involvement of protein kinase A (PKA) in the protective signaling pathway of cAMP against AmB toxicity.

Main Methods:

  • Utilized two distinct renal cell lines: LLC-PK1 and MDCK.
  • Employed MTT and flow cytometry assays to assess cell viability and survival rates.
  • Confirmed signaling pathways using western blot analysis.

Main Results:

  • Exposure to cAMP significantly increased cell survival in renal cell lines treated with Amphotericin B.
  • The protective effect of cAMP was observed to be independent of protein kinase A (PKA) activation.
  • Western blot analysis corroborated the PKA-independent nature of the observed protection.

Conclusions:

  • Cyclic adenosine monophosphate (db-cAMP) demonstrates a protective effect against Amphotericin B-induced nephrotoxicity in renal cell lines.
  • This protective mechanism operates independently of the protein kinase A (PKA) signaling pathway.
  • This represents a novel finding in understanding the potential therapeutic strategies against AmB-related kidney injury.
Keywords:
cAMPcell protectionnephrotoxicity

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