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Quantitative comparison between the transplantability of human and murine tumors into the brain of NCr/Sed-nu/nu nude and severe combined immunodeficient mice. 1993

A Taghian, and W Budach, and A Zietman, and J Freeman, and D Gioioso, and H D Suit
Edwin L. Steele Laboratory of Radiation Biology, Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston 02114.

We have demonstrated (A. Taghian et al., Cancer Res., 53: 5012-5017, 1993) that the take rate of human xenografts in the s.c. tissue of severe combined immunodeficient (SCID) mice is significantly higher than that of nude mice. Earlier, this laboratory reported that the transplantability of tumor xenografts was significantly higher for intracranial (i.c.) injection than for s.c. injection in nude mice. The purpose of this study is to assess: (a) the relative i.c. transplantability of human and murine tumors in comparison with s.c. tissue in SCID mice; (b) the relative i.c. transplantability in SCID mice in comparison to nude mice; and (c) the influence of whole-body irradiation on i.c. transplantability of SCID and nude mice. The assay based on the number of cells required to transplant tumors into 50% of recipients (TD50) was used to describe the transplantability assays. Five human and four murine tumor cell lines were used. Concurrent TD50 assays were performed i.c. in whole-body irradiated and nonirradiated SCID and nude mice. Serial 2-10-fold dilutions of cells were injected in a 10-microliters volume into the right parietal lobe 3 mm below the skin. The results showed that in all tumors studied the i.c. TD50S were significantly lower than the s.c. TD50S by a factor of 1.7-1580. The average enhancement ratio (s.c. TD50/i.c. TD50) in nude mice was twice that in SCID mice. No significant difference was found between the i.c. TD50S in SCID and in nude mice, contrary to the significant difference in s.c. TD50S between both strains of mice (A. Taghian et al., Cancer Res., 53: 5012-5017, 1993). Whole-body irradiation did not significantly affect the i.c. TD50 in nude mice; however, it did affect two of three xenografts in SCID mice. In conclusion, despite the significantly lower s.c. TD50S of human xenografts in SCID mice, i.c. TD50S were almost similar to those of NCr/Sed-nu/nu nude mice. This suggests the presence of different immunoreactivities between nude and SCID mice in s.c. transplantability; however, for i.c. transplantability, nude mice behaved equally as well as SCID mice. The significant enhancement ratio in SCID mice is further evidence that this strain of mice displays a residual systemic immunoreactivity, although the immunoreactivity is significantly lower than that of nude mice.

UI MeSH Term Description Entries
D008819 Mice, Nude Mutant mice homozygous for the recessive gene "nude" which fail to develop a thymus. They are useful in tumor studies and studies on immune responses. Athymic Mice,Mice, Athymic,Nude Mice,Mouse, Athymic,Mouse, Nude,Athymic Mouse,Nude Mouse
D009368 Neoplasm Transplantation Experimental transplantation of neoplasms in laboratory animals for research purposes. Transplantation, Neoplasm,Neoplasm Transplantations,Transplantations, Neoplasm
D009369 Neoplasms New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms. Benign Neoplasm,Cancer,Malignant Neoplasm,Tumor,Tumors,Benign Neoplasms,Malignancy,Malignant Neoplasms,Neoplasia,Neoplasm,Neoplasms, Benign,Cancers,Malignancies,Neoplasias,Neoplasm, Benign,Neoplasm, Malignant,Neoplasms, Malignant
D009374 Neoplasms, Experimental Experimentally induced new abnormal growth of TISSUES in animals to provide models for studying human neoplasms. Experimental Neoplasms,Experimental Neoplasm,Neoplasm, Experimental
D009447 Neuroblastoma A common neoplasm of early childhood arising from neural crest cells in the sympathetic nervous system, and characterized by diverse clinical behavior, ranging from spontaneous remission to rapid metastatic progression and death. This tumor is the most common intraabdominal malignancy of childhood, but it may also arise from thorax, neck, or rarely occur in the central nervous system. Histologic features include uniform round cells with hyperchromatic nuclei arranged in nests and separated by fibrovascular septa. Neuroblastomas may be associated with the opsoclonus-myoclonus syndrome. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, pp2099-2101; Curr Opin Oncol 1998 Jan;10(1):43-51) Neuroblastomas
D001943 Breast Neoplasms Tumors or cancer of the human BREAST. Breast Cancer,Breast Tumors,Cancer of Breast,Breast Carcinoma,Cancer of the Breast,Human Mammary Carcinoma,Malignant Neoplasm of Breast,Malignant Tumor of Breast,Mammary Cancer,Mammary Carcinoma, Human,Mammary Neoplasm, Human,Mammary Neoplasms, Human,Neoplasms, Breast,Tumors, Breast,Breast Carcinomas,Breast Malignant Neoplasm,Breast Malignant Neoplasms,Breast Malignant Tumor,Breast Malignant Tumors,Breast Neoplasm,Breast Tumor,Cancer, Breast,Cancer, Mammary,Cancers, Mammary,Carcinoma, Breast,Carcinoma, Human Mammary,Carcinomas, Breast,Carcinomas, Human Mammary,Human Mammary Carcinomas,Human Mammary Neoplasm,Human Mammary Neoplasms,Mammary Cancers,Mammary Carcinomas, Human,Neoplasm, Breast,Neoplasm, Human Mammary,Neoplasms, Human Mammary,Tumor, Breast
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D003110 Colonic Neoplasms Tumors or cancer of the COLON. Cancer of Colon,Colon Adenocarcinoma,Colon Cancer,Cancer of the Colon,Colon Neoplasms,Colonic Cancer,Neoplasms, Colonic,Adenocarcinoma, Colon,Adenocarcinomas, Colon,Cancer, Colon,Cancer, Colonic,Cancers, Colon,Cancers, Colonic,Colon Adenocarcinomas,Colon Cancers,Colon Neoplasm,Colonic Cancers,Colonic Neoplasm,Neoplasm, Colon,Neoplasm, Colonic,Neoplasms, Colon
D005260 Female Females
D005354 Fibrosarcoma A sarcoma derived from deep fibrous tissue, characterized by bundles of immature proliferating fibroblasts with variable collagen formation, which tends to invade locally and metastasize by the bloodstream. (Stedman, 25th ed) Fibrosarcomas

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