Related Experiment Videos
Density gradient centrifugation of cells separated from multicellular tumor spheroids
Experientia
|June 15, 1979
Summary
Murine fibrosarcoma cells grown in vitro formed multicell tumor spheroids (MTS). Larger MTS (800 µm) yielded three distinct cell subpopulations, unlike smaller MTS (400 µm) which yielded only one.
Area of Science:
- Oncology
- Cell Biology
- Biophysics
Background:
- Multicell tumor spheroids (MTS) are a model for solid tumors.
- Understanding cellular heterogeneity within tumors is crucial for effective treatment.
Purpose of the Study:
- To investigate the cellular composition of murine fibrosarcoma (FSa) multicell tumor spheroids (MTS) at different growth stages.
- To determine if cellular heterogeneity increases with MTS size.
Main Methods:
- Murine fibrosarcoma (FSa) cells were cultured in vitro to form MTS.
- MTS growth rates were monitored.
- MTS were dissociated into single-cell suspensions.
- Cells were separated using Renografin density gradients.
Main Results:
- Small MTS (400 µm diameter) yielded a single cell population.
- Large MTS (800 µm diameter) revealed at least three distinct tumor cell subpopulations.
- Cellular heterogeneity appears to increase with spheroid size.
Conclusions:
- Multicell tumor spheroids (MTS) exhibit increasing cellular heterogeneity as they grow.
- Size-dependent cell separation in MTS suggests developmental or microenvironmental influences on tumor cell subpopulations.