Moser B, Clark-Lewis I, Zwahlen R, Baggiolini M
Theodor-Kocher Institute, University of Bern, Switzerland.
J Exp Med. 1990 May 1;171(5):1797-802. doi: 10.1084/jem.171.5.1797.
Melanoma growth-stimulatory activity (MGSA), a peptide reported to be mitogenic for Hs294T human melanoma cells, has extensive sequence similarity to the neutrophil-activating peptide NAP-1/IL-8, suggesting functional similarities. To test this hypothesis, MGSA was chemically synthesized and tested for its effects on human neutrophils. It was found to induce chemotaxis, exocytosis of elastase, and changes in cytosolic-free calcium to an extent and at concentrations similar to NAP-1/IL-8. However, MGSA was considerably less potent than NAP-1/IL-8 in inducing the respiratory burst. Intradermal injections in rats of MGSA resulted in a massive accumulation of neutrophils. Our data demonstrate that, apart from its growth-stimulatory activity, MGSA is a potent inflammatory agonist with neutrophil-stimulating properties.
黑色素瘤生长刺激活性(MGSA)是一种据报道对Hs294T人黑色素瘤细胞有促有丝分裂作用的肽,它与中性粒细胞激活肽NAP-1/IL-8有广泛的序列相似性,提示功能上的相似性。为验证这一假说,化学合成了MGSA并检测其对人中性粒细胞的作用。发现它能诱导趋化作用、弹性蛋白酶的胞吐作用以及胞质游离钙的变化,其程度和浓度与NAP-1/IL-8相似。然而,在诱导呼吸爆发方面,MGSA的效力远低于NAP-1/IL-8。在大鼠皮内注射MGSA会导致中性粒细胞大量聚集。我们的数据表明,除了其生长刺激活性外,MGSA是一种具有中性粒细胞刺激特性的强效炎症激动剂。