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Molecular cloning and structure of a pre-B-cell growth-stimulating factor.
Open accessAbstract
Generation and proliferation of early B-cell progenitors have been known to require stromal cell-derived molecules. A stromal cell line, PA6, was found to produce a soluble mediator, which was distinct from interleukin 7 (IL-7) and stem cell factor and supported the proliferation of a stromal cell-dependent pre-B-cell clone, DW34. A cDNA clone encoding this DW34 growth-stimulating factor was isolated by expression cloning. The nucleotide sequence contained a single substantial open reading frame of 267 nucleotides encoding an 89-amino acid polypeptide. The amino acid sequence of this cytokine, designated pre-B-cell growth-stimulating factor (PBSF), revealed that it is a member of intercrine alpha subfamily. Recombinant PBSF stimulated the proliferation of DW34 cells for itself and, furthermore, synergistically augmented the growth of DW34 as well as bone marrow B-cell progenitors in the presence of IL-7.
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Metadata
- Authors
- Nagasawa, T., Kikutani, H., & Kishimoto, T.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1994-03-15
- Volume
- 91
- Issue
- 6
- Pages
- 2305-2309
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2075971846
- Cited by
- 803
- References
- 0
- FWCI
- 6.17
- Type
- journal article
- Language
- en
- Open access
- green
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