Related Experiment Video

Updated: Jul 19, 2025

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

Published on: January 7, 2013

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KMU-191 Induces Apoptosis in Human Clear Cell Renal Cell Carcinoma Caki Cells Through Modulation of Bcl-xL, Mcl-1

Shin Kim1,2,3, Dong Eun Kim1, Hyunsu Kang4,5

  • 1Department of Immunology, School of Medicine, Keimyung University, 1095 Dalgubeol-daero, Daegu 42601, Republic of Korea.

Journal of Cancer
|August 14, 2023
PubMed

Insights

The novel compound KMU-191 triggers cancer cell death by regulating apoptosis-related genes, including Mcl-1 and c-FLIP (L), without causing cardiotoxicity. This makes it a promising anti-cancer agent.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Pharmacology

Background:

  • The anti-proliferative effects of KMU-191 have been observed, but its precise anti-cancer molecular mechanisms are not fully understood.
  • Investigating the molecular pathways of novel anti-cancer agents is crucial for therapeutic development.

Purpose of the Study:

  • To elucidate the anti-cancer molecular mechanisms of KMU-191 in human clear cell renal cell carcinoma (Caki) cells.
  • To determine how KMU-191 regulates apoptosis-related genes and its association with cell death pathways.

Main Methods:

  • Treatment of Caki cells with KMU-191.
  • Analysis of apoptosis-related gene expression and protein levels.
  • Assessment of caspase activation and poly ADP-ribose polymerase (PARP) cleavage.
  • Evaluation of cytotoxicity and cardiotoxicity.

Main Results:

  • KMU-191 induced caspase-dependent apoptosis, evidenced by PARP cleavage.
  • Down-regulation of c-FLIP (L) at the transcriptional level and Mcl-1 (L) and B-cell lymphoma-extra large at the post-transcriptional level.
  • Apoptosis was strongly linked to Mcl-1 (L) down-regulation and partially to c-FLIP (L) down-regulation.
  • KMU-191 up-regulated p53, contributing to apoptosis.
  • While cytotoxic to cancer cells, KMU-191 did not induce cardiotoxicity in normal cells.

Conclusions:

  • KMU-191 functions as a multi-target small molecule inducing apoptosis through modulation of key regulatory proteins.
  • The observed lack of cardiotoxicity suggests a favorable safety profile for KMU-191.
  • KMU-191 represents a potential novel anti-cancer therapeutic agent for renal cell carcinoma with reduced cardiac side effects.
Keywords:
Apoptosis, Renal cancerBcl-xLKMU-191Mcl-1 (L), c-FLIP (L), p53

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