重组人PBEF(Visfatin)

特别提示：包括重组人PBEF(Visfatin)在内，本公司的所有产品仅可用于科研实验，严禁用于临床医疗及其他非科研用途！

产品名称：重组人PBEF(Visfatin)
英文名称：Recombinant Human Pre-B-Cell Colony-Enhancing Factor 1
产品货号：JN1558
产品规格：10μg|50μg|500μg|1mg

本品由我们的大肠杆菌表达系统制备而成，目的基因编码的Met1-His491在N端含有His标签。

PBEF/Visfatin质量控制：＞95%(还原性SDS-PAGE)

PBEF/Visfatin制剂：冻干品

PBEF/Visfatin保存：
冻干蛋白置于-20℃以下可长期保存，室温条件下可稳定保存3周。
复溶蛋白溶液可在4～7℃保存2～7天，可分装后置于-20℃保存三个月。

PBEF/Visfatin复溶：
打开试剂管前请先离心。
复溶浓度推荐大于100 μg/ml。
冻干蛋白请溶于ddH2O。
复溶后，请根据用量分装冻存，避免反复冻融。

关于PBEF/Visfatin：
Pre-B cell colony enhancing factor (PBEF) was originally identified as a cytokine that potentiated the clonal expansion and differentiation of pre-B cells, but it is also acknowledged to be the ubiquitous intracellular enzyme nicotinamide phosphoribosyltranferase (NAMPT) and the adipokine “visfatin”. PBEF is constitutively expressed in the fetal membranes where its greatest expression is in the amnion. It has intracellular and extracellular forms. Most of the intracellular functions of PBEF are due to its role as a Nampt which can induce angiogenesis through upregulation of VEGF and VEGFR and secretion of MCP-1. Extracellular PBEF has been shown to increase inflammatory cytokines, such as TNF-α, IL-1β, IL-16, and TGF-β1. PBEF also increases the production of IL-6, TNF-α, and IL-1β in CD14+ monocyctes, macrophages, and dendritic cells, enhances the effectiveness of T cells.

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