产品号 #78084_C
白介素8
白介素-8 (IL-8)是趋化因子CXC亚家族的一员,由白细胞(单核细胞、T细胞、中性粒细胞和自然杀伤细胞)和非白细胞体细胞(内皮细胞、成纤维细胞和上皮细胞)产生,最主要的来源是单核细胞和巨噬细胞。它的产生是由炎症刺激,如IL-1诱导的。IL-8,也被称为CXCL8,激活中性粒细胞,诱导趋化、脱粒和呼吸爆发反应(Baggiolini & Clark-Lewis; Mukaida)。IL-8被认为是炎症中最强效的中性粒细胞趋化因子之一,它通过结合白细胞表面的两种 G 蛋白偶联受体——CXCR1 和 CXCR2 发挥作用 Hoffmann et al.; de Oliveira et al.)。在体外实验中,IL-8通过CXCR2介导对人肠道微血管内皮细胞具有促血管生成的功能(Heidemann et al.)。研究发现,IL-8通过促进肿瘤细胞侵袭、血管生成和转移来促进乳腺癌的进展,并与乳腺癌干样细胞的调控有关(Singh et al.)。IL-8在结膜、角膜、虹膜、视网膜和眼框等部位的炎症性疾病中也具有促血管生成的特性(Ghasemi et al.)。在人类新生儿中,T细胞的一项主要效应功能是产生IL-8,有助于激活抗菌中性粒细胞和γ / δ T细胞(Gibbons et al.)。多种人类病原体,如HIV和结核分枝杆菌,已被证实可诱导单核细胞和巨噬细胞分泌IL-8 (Friedland et al.; Meddows-Taylor et al.)。
亚型
细胞因子
别名
CXC 结构域配体 8;GCP-1;粒细胞趋化蛋白 1;白细胞介素-8;MDNCF;单核细胞衍生粒细胞趋化因子;NAF;NAP-1;中性粒细胞激活因子;SCYB8;小诱导性细胞因子亚家族 B 成员 8
细胞类型
气道细胞,内皮细胞,角质形成细胞,巨噬细胞,单核细胞,NK 细胞
种属
人
研究领域
上皮细胞研究,免疫,干细胞生物学
分子量
8.9 千道尔顿
纯度
≥ 95 %
(A) The biological activity of Human Recombinant IL-8 (CXCL8) was tested by its ability to mobilize Ca2+ in CHO-K1/Gα15/hCXCR1 cells (human Gα15 and human CXCR1 stably expressed in CHO-K1 cells). Ca2+ mobilization was measured using a fluorometric assay method. The EC50 is defined as the effective concentration of the growth factor at which Ca2+ mobilization is at 50% of maximum. The EC50 in the example above is less than 0.15 μg/mL. (B) 2 μg of Human Recombinant IL-8 (CXCL8) was resolved with SDS-PAGE under reducing (+) and non-reducing (-) conditions and visualized by Coomassie Blue staining. Human Recombinant IL-8 (CXCL8) has a predicted molecular mass of 8.9 kDa.
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Molecular Weight | 8.9 kDa |
---|---|
Species | Human |
Alternative Names | CXC motif ligand 8, GCP-1, Granulocyte chemotactic protein 1, Interleukin-8, MDNCF, Monocyte-derived neutrophil chemotactic factor, NAF, NAP-1, Neutrophil activating factor, SCYB8, Small inducible cytokine subfamily B member 8 |
Purity | ≥ 95 % |
用于培养和扩增造血细胞的无血清培养基
免疫密度负选试剂混合物
白介素1β
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