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PMID:18467591
| Citation |
Lin, H, Lee, E, Hestir, K, Leo, C, Huang, M, Bosch, E, Halenbeck, R, Wu, G, Zhou, A, Behrens, D, Hollenbaugh, D, Linnemann, T, Qin, M, Wong, J, Chu, K, Doberstein, SK and Williams, LT (2008) Discovery of a cytokine and its receptor by functional screening of the extracellular proteome. Science 320:807-11 |
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| Abstract |
To understand the system of secreted proteins and receptors involved in cell-cell signaling, we produced a comprehensive set of recombinant secreted proteins and the extracellular domains of transmembrane proteins, which constitute most of the protein components of the extracellular space. Each protein was tested in a suite of assays that measured metabolic, growth, or transcriptional responses in diverse cell types. The pattern of responses across assays was analyzed for the degree of functional selectivity of each protein. One of the highly selective proteins was a previously undescribed ligand, designated interleukin-34 (IL-34), which stimulates monocyte viability but does not affect responses in a wide spectrum of other assays. In a separate functional screen, we used a collection of extracellular domains of transmembrane proteins to discover the receptor for IL-34, which was a known cytokine receptor, colony-stimulating factor 1 (also called macrophage colony-stimulating factor) receptor. This systematic approach is thus useful for discovering new ligands and receptors and assessing the functional selectivity of extracellular regulatory proteins. |
| Links |
PubMed Online version:10.1126/science.1154370 |
| Keywords |
Animals; Cloning, Molecular; DNA, Complementary; Extracellular Space/chemistry; Humans; Interleukins/isolation & purification; Interleukins/physiology; Interleukins/secretion; Membrane Proteins/isolation & purification; Membrane Proteins/physiology; Protein Structure, Tertiary; Proteome; Receptors, Interleukin/isolation & purification; Receptors, Interleukin/physiology |
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Significance
Annotations
| Gene product | Qualifier | GO ID | GO term name | Evidence Code | with/from | Aspect | Notes | Status |
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