Abstract
Synergistic factors from media conditioned (CM) by human placentas or the 5637 human bladder carcinoma cell line (SFH-HPCM and SFH-5637 respectively) have the ability to stimulate early progenitor cells in mouse bone marrow to form large colonies in agar cultures after 12-14 days, in the presence of CSF-1. Culture conditions have been examined and a quicker and more convenient liquid culture assay has been developed for this factor, using a tetrazolium salt to quantitate cell proliferation. The use of flat-bottomed vessels, high cell density, supra-optimal doses of CSF-1 or the addition of WEHI-3-CM to these cultures, all resulted in a decrease in the required incubation time. In combination, these modifications reduced the assay time to 4 days.
Original language | English (US) |
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Pages (from-to) | 93-102 |
Number of pages | 10 |
Journal | Journal of Immunological Methods |
Volume | 103 |
Issue number | 1 |
DOIs | |
State | Published - Oct 23 1987 |
Keywords
- Hemopoietin 1
- High proliferative potential colony-forming cell
- Liquid culture
- Synergistic factor
ASJC Scopus subject areas
- Immunology and Allergy
- Immunology