Abstract
We have previously cloned from K562 leukemia cells two novel fibroblast growth factor receptors (FGFR-3 and FGFR-4; J. Partanen et al., EMBO J., 10: 1347-1354, 1991). Here we have analyzed the mRNA expression of four different FGFRs, including the two novel genes in human leukemia cell lines. We show FGFR-1, FGFR-3, and FGFR-4 mRNAs in several leukemia cell lines at levels similar to those in solid tumor cell lines. Ligand cross-linking experiments indicate that K562 cells have receptors binding acidic FGF but not basic FGF. Expression of FGFRs in leukemia cells may reflect their presence on normal hematopoietic precursor cells or induction during leukemogenesis or cell culture.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Blotting, Northern
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Cell Line
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Fibroblast Growth Factor 1 / metabolism
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Fibroblast Growth Factor 2 / metabolism
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Humans
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Leukemia / genetics
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Leukemia, Myelogenous, Chronic, BCR-ABL Positive
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Neoplasms
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Poly A / genetics
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Poly A / isolation & purification
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RNA / genetics
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RNA / isolation & purification
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RNA, Messenger / metabolism
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Receptors, Cell Surface / genetics*
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Receptors, Cell Surface / metabolism
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Receptors, Fibroblast Growth Factor
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Recombinant Proteins / metabolism
Substances
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RNA, Messenger
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Receptors, Cell Surface
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Receptors, Fibroblast Growth Factor
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Recombinant Proteins
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Fibroblast Growth Factor 2
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Fibroblast Growth Factor 1
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Poly A
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RNA