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Two cDNAs encoding novel human FGF receptor
1Biotechnology Research Laboratories, Takeda Chemical Industries, Ltd., Osaka, Japan.
Abstract:
Two types of cDNAs encoding novel human FGF receptors were isolated. These two cDNAs were found to be closely related to the oncogene bek. Products from these genes were membrane-bound when their cDNAs were transiently expressed in COS cells, whereas products from the regions coding extracellular domains were free of membrane attachment and found in the culture medium.
Insights
Researchers identified two novel human fibroblast growth factor (FGF) receptors, closely related to the bek oncogene. These receptors exhibit distinct membrane-bound and secreted forms, influencing cellular signaling pathways.
Area of Science:
- Molecular Biology
- Genetics
- Cell Biology
Background:
- Fibroblast Growth Factors (FGFs) are crucial signaling molecules involved in various biological processes.
- FGF receptors (FGFRs) mediate FGF signaling, playing roles in development, cell growth, and disease.
- The oncogene bek is known to be involved in certain cancers.
Purpose of the Study:
- To isolate and characterize novel human fibroblast growth factor (FGF) receptors.
- To investigate the relationship of these novel receptors to the known oncogene bek.
- To determine the cellular localization and expression patterns of the novel FGF receptor products.
Main Methods:
- Isolation of complementary DNAs (cDNAs) encoding novel human FGF receptors.
- Transient expression of these cDNAs in COS cells.
- Analysis of the expression products to determine their cellular localization (membrane-bound vs. secreted).
Main Results:
- Two distinct types of cDNAs encoding novel human FGF receptors were successfully isolated.
- These novel FGF receptors show close homology to the oncogene bek.
- Expressed products were found to be membrane-bound, while products from extracellular domain regions were secreted into the culture medium.
Conclusions:
- Discovery of novel human FGF receptors with implications for FGF signaling pathways.
- The findings suggest potential roles for these receptors in both normal cellular functions and oncogenesis.
- Understanding the differential expression (membrane-bound vs. secreted) is key to deciphering their biological functions.