Cytotoxic ribonucleases: molecular weapons and their targets

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Alexander A Makarov1, Olga N Ilinskaya

  • 1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str 32, 119991 Moscow, Russia. aamakarov@gemone.eimb.relarn.ru

FEBS Letters
|April 12, 2003
PubMed

Insights

Microbial ribonucleases (RNases) show cytotoxic potential against cancer cells. Key factors for their therapeutic use include catalytic activity, stability, and efficient cellular uptake, driven by molecular properties.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Oncology

Background:

  • Ribonucleases (RNases) exhibit significant cytotoxicity.
  • Certain RNases selectively target malignant cells, inducing apoptosis.
  • These properties position RNases as potential chemotherapeutic agents.

Purpose of the Study:

  • To review factors influencing the cytotoxicity of ribonucleases, particularly microbial RNases.
  • To characterize cellular targets and molecular determinants of RNase cytotoxic action.

Main Methods:

  • Review of existing literature on RNase cytotoxicity.
  • Analysis of factors including catalytic activity, inhibitor resistance, stability, and internalization efficiency.
  • Characterization of molecular determinants like positive charge and cell membrane interactions.

Main Results:

  • Cytotoxicity of RNases is governed by catalytic efficiency, stability, and ability to evade inhibitors.
  • Efficient internalization, influenced by molecular charge and membrane interactions, is crucial.
  • Specific cellular targets and molecular features dictate cytotoxic effects.

Conclusions:

  • Microbial RNases possess therapeutic potential as anticancer drugs.
  • Optimizing RNase properties like stability and cellular uptake is key for efficacy.
  • Understanding molecular determinants enhances the development of targeted RNase-based therapies.

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