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Peptide 78

CAS No. : 132116-62-2

MCE 国际站：Peptide 78

产品活性：Peptide 78，一种趋化细胞因子，由 78 个氨基酸组成，是 IL-8 或 C-X-C 趋化因子超基因家族的蛋白成员。Peptide 78 诱导中性粒细胞 (PMN) 在类风湿性关节炎 (RA) 关节方面发挥重要作用。

研究领域：Others

作用靶点：Others

In Vitro: Peptide 78, a potent PMN chemotaxin, in the conditioned medium of human pulmonary epithelial cells (A549) stimulated with TNF-α (20 ng/mL) or IL-1β (10 ng/mL). Peptide 78 is an 8.3-kD protein with 78 amino acids containing 4 cysteines positioned identically to those of IL-8 and its homologues. Peptide 78 belongs to a supergene family that includes platelet factor-4, platelet basic protein, and its cleavage products (connective tissue activating peptide-III, β-thromboglobulin, and interferon-γ-inducible protein, macrophage inflammatory protein-2α, and macrophage inflammatory protein-2β).
Peptide 78 shares several properties of PMN activation similar to either NAP-2 or LL-8. Peptide 78 stimulation of PMNs results in significant chemotactic activity, release of elastase from cytochalasin-B-pretreated cells, and the induction of free, cytosolic calcium release. Peptide 78 aids in the recruitment of PMNs into inflamed joints of RA. Peptide 78 represents one of the most abundant chemokines present in RA synovial fluid.Peptide 78 in rheumatoid arthritis synovial fluids is biologically active. Peptide 78 appears to account for almost half of the RA synovial fluid PMN chemotactic activity in vitro.

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