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GROWTH INHIBITION OF SARCOMA AND CARCINOMA CELLS OF HOMOZYGOUS ORIGIN
Science (New York, N.Y.)
|January 31, 1964
Abstract:
Three sarcomas and one carcinoma, originating in homozygous mice, were tested for growth in isologous animals and various semi-isologous F(1) hybrids after inoculation of 10(3) to 10(5) cells. Findings indicated the existence of an "F(1) hybrid effect" for sarcomas and carcinomas, as previously described for lymphomas and normal hematopoietic cells, there being a lower tumor frequency and a longer latency period in the hybrids than in isologous mice.
Insights
Tumor growth was studied in mice. Cancer cells showed reduced growth and longer development times in hybrid mice, indicating an "F(1) hybrid effect" for sarcomas and carcinomas.
Area of Science:
- Immunology
- Oncology
- Genetics
Background:
- The F(1) hybrid effect describes reduced growth of normal cells and lymphomas in semi-isologous hybrid animals.
- This phenomenon's applicability to solid tumors like sarcomas and carcinomas was previously unexplored.
Purpose of the Study:
- To investigate the F(1) hybrid effect on the growth of sarcomas and carcinomas.
- To determine if solid tumors exhibit similar growth patterns in hybrid mice as observed in lymphomas and hematopoietic cells.
Main Methods:
- Three sarcomas and one carcinoma were induced in homozygous mice.
- Tumor cells (10^3 to 10^5) were inoculated into both isologous mice and semi-isologous F(1) hybrids.
- Tumor incidence and latency periods were monitored.
Main Results:
- Both sarcomas and carcinomas exhibited an F(1) hybrid effect.
- Tumor frequency was lower in F(1) hybrids compared to isologous mice.
- Tumor latency periods were significantly longer in F(1) hybrids.
Conclusions:
- The F(1) hybrid effect extends to solid tumors, including sarcomas and carcinomas.
- This suggests a shared immunological or genetic mechanism underlies the F(1) hybrid effect across different tumor types.
- Findings support the role of host genetics in modulating tumor progression.
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