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Human tumour xenografts: a critical appraisal
Abstract:
Human tumours grown in immune-deficient mice are available for studies in experimental pathology and therapeutics. In addition to growth-delay experiments clonogenic assays can sometimes be performed. Xenografts often retain some characteristics of the source tumour but the amount of precise information on the maintenance of therapeutic sensitivity is small. Principal drawbacks include the difficulty of matching with human doses the dose of drugs given to the host mouse, and the probable existence of a substantial host reaction against the grafts. Principal benefits may be to studies that involve the intercomparison of human tumours in regard to therapeutic response.
Insights
Human tumor xenografts in mice offer valuable models for experimental pathology and therapeutics. While retaining some tumor traits, precise data on maintaining therapeutic sensitivity in these models is limited.
Area of Science:
- Oncology
- Experimental Pathology
- Pharmacology
Background:
- Human tumors can be grown in immune-deficient mice, serving as xenografts for research.
- These xenografts are utilized in experimental pathology and therapeutic studies, including growth-delay experiments and clonogenic assays.
Purpose of the Study:
- To evaluate the utility of human tumor xenografts in mice for therapeutic studies.
- To assess the extent to which xenografts maintain the characteristics and therapeutic sensitivity of the original human tumors.
- To identify the key benefits and drawbacks of using xenografts in preclinical research.
Main Methods:
- Utilizing human tumor xenografts grown in immune-deficient mice.
- Performing growth-delay experiments to assess tumor response to treatment.
- Conducting clonogenic assays to evaluate tumor cell survival and reproductive potential post-treatment.
Main Results:
- Xenografts often retain characteristics of the parent human tumor.
- Precise information regarding the maintenance of therapeutic sensitivity in xenografts is limited.
- Challenges include accurately matching human drug doses to mouse models and potential host immune reactions.
Conclusions:
- Human tumor xenografts are valuable tools for comparative studies of therapeutic responses.
- Further research is needed to fully understand and optimize the use of xenografts for predicting clinical therapeutic sensitivity.
- Careful consideration of dosage translation and host factors is crucial when interpreting xenograft study results.