Related Experiment Videos
A factor produced by human cells in vitro that changes HeLa cell colonial morphology.
1Department of Internal Medicine, University of Nebraska Medical Center, Omaha 68105.
Summary
HeLa cell colony morphology, characterized as diffuse, intermediate, and compact, is influenced by culture medium and fibroblast co-cultivation. A heat-stable factor from conditioned medium significantly increases compact colonies.
Area of Science:
- Cell Biology
- Biochemistry
- Tissue Engineering
Background:
- HeLa cells exhibit distinct colony morphologies (diffuse, intermediate, compact) influenced by growth media.
- Colony type distribution is sensitive to serum composition and additives.
Purpose of the Study:
- To investigate factors influencing HeLa cell colonial morphology.
- To identify substances and cellular interactions affecting colony type distribution.
Main Methods:
- Culturing HeLa cells in media with varying serum and additives.
- Co-culturing HeLa cells with human fibroblasts at different densities.
- Analyzing conditioned media from cell cultures.
Main Results:
- Serum type affects modal distribution of HeLa cell colony types.
- Trypsin, heparin, and Darvan promote compact colony formation.
- Co-cultivation with fibroblasts increases compact colonies; a conditioned medium factor enhances this effect.
- The factor is non-dialyzable, heat-stable, serum-neutralizable, and its effect is time-dependent and reversible.
Conclusions:
- HeLa cell colonial morphology is a dynamic trait regulated by specific medium components and cell-cell interactions.
- A novel, heat-stable factor from fibroblast-conditioned medium modulates HeLa cell colony formation.
- This factor holds potential for controlling cell growth and morphology in culture.