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Published on: February 22, 2019
RNases Disrupt the Adaptive Potential of Malignant Cells: Perspectives for Therapy
Vladimir Alexandrovich Mitkevich1, Irina Yu Petrushanko1, Alexander Alexander Makarov1
1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
Abstract:
Exogenous RNases are selectively toxic to tumor cells. The reasons for this selectivity are not quite clear and should be searched for in the properties that distinguish malignant from normal cells. During onco-transformation, cells acquire properties allowing them to adapt to the altered microenvironment, such as resistance to hypoxia, changes in intracellular pH, disruption of ion transport, reduced adhesion and increased mobility, and production of specific exosomes. These adaptation mechanisms distinguish malignant cells from normal ones and give them a competitive advantage, ensuring survival and spread in the organism. Here, we analyze if the directed cytotoxic effect of exogenous RNases is linked to the disruption of the adaptive potential of tumor cells and how it can be used in anticancer therapy.
Insights
Exogenous RNases show selective toxicity to tumor cells, potentially by disrupting their adaptive mechanisms. Further research explores their use in anticancer therapy by targeting these unique malignant cell properties.
Area of Science:
- Biochemistry
- Oncology
- Molecular Biology
Background:
- Exogenous RNases exhibit selective toxicity towards tumor cells.
- The precise mechanisms underlying this selectivity remain unclear.
- Malignant cells possess distinct adaptive properties compared to normal cells, facilitating survival in altered microenvironments.
Purpose of the Study:
- To investigate the link between the cytotoxic effects of exogenous RNases and the disruption of tumor cell adaptive potential.
- To explore the therapeutic applications of exogenous RNases in anticancer strategies.
Main Methods:
- Analysis of tumor cell adaptation mechanisms (hypoxia resistance, pH changes, ion transport, adhesion, mobility, exosome production).
- Evaluation of the impact of exogenous RNases on these adaptive properties.
- Assessment of the potential of RNase-mediated disruption for cancer therapy.
Main Results:
- Tumor cells develop adaptive strategies for microenvironmental challenges.
- Exogenous RNases may target and disrupt these specific adaptive mechanisms.
- This disruption presents a potential avenue for targeted anticancer therapy.
Conclusions:
- The selective toxicity of exogenous RNases is likely associated with their ability to interfere with tumor cell adaptation.
- Targeting these adaptive vulnerabilities offers a promising strategy for novel anticancer treatments.
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