Human IL-8/CXCL8 HEK293 Overexpression Lysate


Human IL-8/CXCL8 HEK293 Overexpression Lysate: 产品信息

This Human IL-8/CXCL8 overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of IL-8/CXCL8 protein (Cat: 10098-HNCH1) from the overexpression lysate was verified.
HEK293 Cells
The 77 amino acid endothelial-cell derived form (Ala 23-Ser 99) of the mature human IL8 (NP_000575.1) was expressed and purified.
The recombinant mature human cytokine IL8 comprising the 1-77 amino acids predicts a molecular mass of 8 kDa, and migrates as an approximately 12 kDa protein in SDS-PAGE due to glycosylation.

Human IL-8/CXCL8 HEK293 Overexpression Lysate: 使用指南

Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors (Sigma). Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (Bio-Rad protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50 mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
Modified RIPA Lysis Buffer: 50 mM Tris-HCl pH 7.4, 150 mM NaCl, 1mM EDTA, 1% Triton X-100, 0.1% SDS, 1% Sodium deoxycholate, 1mM PMSF.
1.  Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube. 2.  Re-dissolve the pellet using 200μL pure water and boil for 2-5 min.
1 X Sample Buffer (1 X modified RIPA buffer+1 X SDS loading buffer).
稳定性 & 储存条件
Store at 4℃ for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80℃ for up to twelve months. Avoid repeated freeze-thaw cycles.
Western Blot (WB)
Optimal dilutions/concentrations should be determined by the end user.

Human IL-8/CXCL8 HEK293 Overexpression Lysate: 别称

Human GCP-1 Overexpression Lysate; Human GCP1 Overexpression Lysate; Human IL-8 Overexpression Lysate; Human IL8 Overexpression Lysate; Human Interleukin-8 Overexpression Lysate; Human LECT Overexpression Lysate; Human LUCT Overexpression Lysate; Human LYNAP Overexpression Lysate; Human MDNCF Overexpression Lysate; Human MONAP Overexpression Lysate; Human NAF Overexpression Lysate; Human NAP-1 Overexpression Lysate; Human NAP1 Overexpression Lysate

IL-8/CXCL8 背景信息

Interleukin 8 (IL-8), also known as CXCL8, which is a chemokine with a defining CXC amino acid motif that was initially characterized for its leukocyte chemotactic activity, is now known to possess tumorigenic and proangiogenic properties as well. This chemokine is secreted by a variety of cell types including monocyte/macrophages, T cells, neutrophils, fibroblasts, endothelial cells, and various tumor cell lines in response to inflammatory stimuli (IL1, TNF, LPS, etc). In human gliomas, IL-8 is expressed and secreted at high levels both in vitro and in vivo, and recent experiments suggest it is critical to glial tumor neovascularity and progression. Levels of IL-8 correlate with histologic grade in glial neoplasms, and the most malignant form, glioblastoma, shows the highest expression in pseudopalisading cells around necrosis, suggesting that hypoxia/anoxia may stimulate expression. Interleukin (IL)-8/CXCL8 is a potent neutrophil chemotactic factor. Accumulating evidence has demonstrated that various types of cells can produce a large amount of IL-8/CXCL8 in response to a wide variety of stimuli, including proinflammatory cytokines, microbes and their products, and environmental changes such as hypoxia, reperfusion, and hyperoxia. Numerous observations have established IL-8/CXCL8 as a key mediator in neutrophil-mediated acute inflammation due to its potent actions on neutrophils. However, several lines of evidence indicate that IL-8/CXCL8 has a wide range of actions on various types of cells, including lymphocytes, monocytes, endothelial cells, and fibroblasts, besides neutrophils. The discovery of these biological functions suggests that IL-8/CXCL8 has crucial roles in various pathological conditions such as chronic inflammation and cancer. IL-8 has been associated with tumor angiogenesis, metastasis, and poor prognosis in breast cancer. IL-8 may present a novel therapeutic target for estrogen driven breast carcinogenesis and tumor progression.
chemokine (C-X-C motif) ligand 8
Related Pathways
  • IL17 signaling pathway
    IL17 signaling pathway
  • Mukaida N. (2003) Pathophysiological roles of interleukin-8/CXCL8 in pulmonary diseases. Am J Physiol Lung Cell Mol Physiol. 284(4): L566-77.
  • Brat DJ, et al. (2005) The role of interleukin-8 and its receptors in gliomagenesis and tumoral angiogenesis. Neuro Oncol. 7(2): 122-33.
  • Bendrik C, et al. (2009) Estradiol increases IL-8 secretion of normal human breast tissue and breast cancer in vivo. J Immunol. 182(1): 371-8.
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