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Updated: Aug 19, 2025

Assessment of Mitochondrial Functions and Cell Viability in Renal Cells Overexpressing Protein Kinase C Isozymes
15:43

Assessment of Mitochondrial Functions and Cell Viability in Renal Cells Overexpressing Protein Kinase C Isozymes

Published on: January 7, 2013

18.2K

Cellular and molecular effects of PNCK, a non-canonical kinase target in renal cell carcinoma

Derek J Essegian1, Valery Chavez2, Floritza Bustamante2

  • 1Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL 33136, USA.

Iscience
|December 5, 2022
PubMed

Insights

Pregnancy-upregulated non-ubiquitous calcium-calmodulin-dependent kinase (PNCK) is highly overexpressed in advanced renal cell carcinoma (RCC), driving tumor growth and poor survival. Targeting PNCK presents a promising new therapeutic strategy for this fatal cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genomics

Background:

  • Advanced renal cell carcinoma (RCC) remains a significant cause of cancer mortality, with current treatments offering limited long-term efficacy for many patients.
  • Despite advances in immunotherapy and tyrosine kinase inhibitors, a substantial proportion of patients with advanced RCC eventually succumb to the disease, highlighting the need for novel therapeutic targets.

Purpose of the Study:

  • To identify novel therapeutic targets in renal cell carcinoma (RCC) by conducting a comprehensive pan-cancer, pan-kinome analysis.
  • To investigate the biological role and clinical significance of pregnancy-upregulated non-ubiquitous calcium-calmodulin-dependent kinase (PNCK) in RCC progression and patient outcomes.

Main Methods:

  • Utilized the Cancer Genome Atlas (TCGA) for a pan-cancer, pan-kinome analysis to identify differentially overexpressed kinases in RCC.
  • Performed functional studies involving PNCK knockdown in RCC cells to assess its impact on cell proliferation, apoptosis, cell cycle, and key signaling pathways.
  • Conducted pathway analyses to elucidate the molecular mechanisms regulated by PNCK in RCC.

Main Results:

  • Pregnancy-upregulated non-ubiquitous calcium-calmodulin-dependent kinase (PNCK) was identified as the most differentially overexpressed kinase in RCC across the TCGA dataset.
  • PNCK overexpression positively correlated with advanced tumor stage, higher tumor grade, and poorer patient survival.
  • PNCK knockdown led to decreased cell proliferation, cell cycle progression, and increased apoptosis, alongside significant downregulation of hypoxia and angiogenesis pathways.

Conclusions:

  • This study establishes the critical role of PNCK in the pathogenesis of renal cell carcinoma (RCC), demonstrating its involvement in tumor progression and survival.
  • The findings validate PNCK as a novel, druggable target for therapeutic intervention in advanced RCC.
  • Further research into PNCK-targeted therapies holds significant promise for improving outcomes in patients with this aggressive cancer.
Keywords:
Cell biologycancercancer systems biology

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