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Related Experiment Videos

Experimental postoperative adjuvant chemotherapy by UFT using primary tumor amputation model.

J Uchida1, K Sato, H Okabe

  • 1The Second Cancer Lab., Taiho Pharmaceutical Co., Ltd., Hanno-city, Saitama 357-8527, Japan.

International Journal of Molecular Medicine
|March 17, 2000
PubMed
Summary

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Postoperative adjuvant chemotherapy with UFT significantly prolonged survival and reduced lung metastases in mouse models. Long-term UFT administration showed high sensitivity to micrometastases, suggesting clinical efficacy in resected cancers.

Area of Science:

  • Oncology
  • Pharmacology
  • Cancer Metastasis Research

Background:

  • Evaluating postoperative adjuvant chemotherapy is crucial for improving outcomes in resected cancers.
  • UFT (uracil and tegafur) is an oral fluoropyrimidine drug used in cancer treatment.
  • Understanding the efficacy of UFT against micrometastases is key for optimizing adjuvant therapy.

Purpose of the Study:

  • To assess the efficacy of UFT as a postoperative adjuvant chemotherapy in a primary tumor amputation-pulmonary metastasis mouse model.
  • To investigate the effect of UFT on survival and the reduction of metastatic nodules.
  • To determine the optimal timing and duration of UFT administration for maximal therapeutic benefit.

Main Methods:

  • Lewis lung carcinoma (LLC) and Colon 26 PMF-15 models were used in mice.

Related Experiment Videos

  • Primary tumors were amputated at different time points (earlier vs. later) to simulate surgical resection.
  • Mice received long-term (60-day) or short-term (2-week) UFT administration at 22 mg/kg/day.

    • Main Results:

    • Long-term UFT administration significantly prolonged survival (over 118% ILS in LLC, 150% ILS in Colon 26) and achieved a cure in one mouse with LLC.
    • UFT significantly reduced the number of lung metastatic nodules (86% inhibition in Colon 26) and was more effective with earlier amputation.
    • UFT demonstrated high sensitivity to micrometastases without causing significant body weight loss or inhibiting large tumor growth.

    Conclusions:

    • Long-term postoperative adjuvant chemotherapy with UFT is effective in prolonging survival and reducing pulmonary metastases in preclinical models.
    • UFT shows significant efficacy against micrometastases, supporting its use in adjuvant settings for curatively resected cancers.
    • These findings suggest UFT holds promise for clinical application in adjuvant chemotherapy following cancer resection.