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- W2414725653 abstract "A B S T R A C T Platelet-derived growth factor (PDGF) stimulates both proliferation of fibroblasts and chemotaxis of leukocytes. In this study we compared the mitogenic and chemotactic activities of native PDGF and reduced PDGF. Reduction of PDGF (Mr = 32,000) to its constituent polypeptides (Mr = 14,000 and 17,000) caused a loss of the ability to stimulate proliferation of Balb/c 3T3 cells. However, reduced PDGF retained virtually all of its activity as a chemotactic agent for human neutrophils and monocytes. A half-maximal chemotactic response to both native and reduced PDGF occurred at a concentration of -0.08 nM for neutrophils and 0.1 nM for monocytes. The maximal chemotactic response to reduced PDGF was at least as great as the maximal response to native PDGF. Both native and reduced PDGF stimulated the release of the lysosomal enzyme, 3-glucosaminidase, from neutrophils with a half-maximal response at <0.1 nM. However, the net maximum release of this enzyme by PDGF (and reduced PDGF) was significantly less than that stimulated by a maximal concentration of the chemotactic peptide N-formyl-methionyl-leucylphenylalanine. These results indicate that different structural determinants are required for the proliferative response of 3T3 cells to PDGF and for the chemotactic response of leukocytes to PDGF." @default.
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- W2414725653 date "1983-01-01" @default.
- W2414725653 modified "2023-09-27" @default.
- W2414725653 title "Growth Factor Stimulates Mouse 3T3 Cell Mitogenesis and Leukocyte Chemotaxis Through Different Structural Determinants" @default.
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