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[Electron microscopic study on the method of evaluation of SRC assay]
1Dept. of Surgery, Koshigaya Hospital, Dokkyo University, School of Medicine, Koshigaya, Japan.
Gan to Kagaku Ryoho. Cancer & Chemotherapy
|September 1, 1992
Summary
The subrenal capsule assay (SRC) effectively evaluates chemotherapy for colorectal cancer. Measuring mucous granules in grafted tumors offers a sensitive alternative to tumor size for assessing drug efficacy.
Area of Science:
- Oncology
- Pharmacology
- Biotechnology
Context:
- The subrenal capsule assay (SRC) is a validated method for assessing chemotherapeutic agents.
- Evaluating SRC sensitivity traditionally relies on tumor graft size, which may have limitations.
- Clinical application requires understanding assay sensitivity and reliable parameters for drug response.
Purpose:
- To investigate the sensitivity of the subrenal capsule assay (SRC) for evaluating colorectal cancer chemotherapy.
- To identify reliable ultrastructural parameters for assessing chemotherapy efficacy in SRC models.
- To compare the sensitivity of mucous granule counts with tumor diameter in SRC.
Summary:
- The subrenal capsule assay (SRC) was performed on colorectal cancer xenografts in nude mice treated with UFT or CDDP.
- Ultrastructural analysis focused on features like mucous granules, nuclear mitosis, and ribosomal accumulation.
- The number of mucous granules correlated well with tumor diameter, serving as a sensitive indicator of chemotherapeutic effect.
Impact:
- This study identifies mucous granule quantification as a reliable parameter for enhancing SRC sensitivity in chemotherapy evaluation.
- The findings support the clinical utility of the SRC assay for assessing drug efficacy in colorectal cancer.
- Ultrastructural examination provides deeper insights into tumor cell response to chemotherapy within the SRC model.