RSR13, an allosteric effector of haemoglobin, and carbogen radiosensitize FSAII and SCCVII tumours in C3H mice
1999
RSR13 Enhances Tumor Sensitivity to Radiation
publication
Evidence: moderate
Author Information
Author(s): Khandelwal S R, Kavanagh B D, Lin P-S, Truong Q T, Lu J, Abraham D J, Schmidt-Ullrich R K
Primary Institution: Medical College of Virginia
Hypothesis
Does RSR13 improve the effectiveness of radiation therapy in tumors by altering hemoglobin-oxygen affinity?
Conclusion
Combining RSR13 with radiation significantly enhances radiosensitization in certain tumor models.
Supporting Evidence
- RSR13 binding to hemoglobin decreases its oxygen affinity.
- Improved tumor oxygenation enhances radiation-induced cell killing.
- Combining RSR13 with carbogen breathing reversed radioresistance.
Takeaway
RSR13 helps make tumors more sensitive to radiation, which can improve cancer treatment.
Methodology
Ex vivo clonogenic survival analyses were performed in murine tumor systems to assess the effects of RSR13 on radiosensitization.
Limitations
Further preclinical studies are needed to optimize dose-scheduling for clinical use.
Participant Demographics
C3H mice were used in the study.
Digital Object Identifier (DOI)
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