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当前位置:首页 >> 产品中心 >> 辅助试剂 >> 细胞因子 >> Human

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  • Procell-IL-4/ BSF-1, Human, Recombinant

IL-4/ BSF-1, Human, Recombinant

货号:PCK031

价格:¥1480¥3980¥13880¥19980

规格:
10µg
  • 10µg
  • 50µg
  • 500µg
  • 1mg
数量: - +
产品概述

产品信息

别名 Interleukin-4; IL-4; B-Cell Stimulatory Factor 1; BSF-1; Binetrakin; Lymphocyte Stimulatory Factor 1; Pitrakinra; IL4
物种 Human
表达宿主 E.coli
序列信息 His25-Ser153
检索号 P05112
分子量 15.1 kDa
表观分子量 13-14 kDa
生物活性 Measured by the dose-dependent stimulation of TF-1 cells.The ED50 is less than 2 ng/ ml. Specific Activity of 5.0?0^6 IU/ mg.

产品特性

纯度 >95% as determined by reducing SDS-PAGE.
内毒素 < 1.0 EU per µg as determined by LAL test.
保存 Lyophilized Protein should be stored at < -20℃, though stable at room temperature for 3 weeks. Reconstituted Protein solution can be stored at 4-7℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.
运输 The product is shipped at ambient temperature.Upon receipt, store it immediately at the temperature listed below.
制剂 Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.4.
复融 Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100 μg/ml. Dissolve the lyophilized protein in distilled water Please aliquot the reconstituted solution to minimize freeze-thaw cycles.

背景介绍

Interleukin-4 (IL-4) is a pleiotropic Cytokine that regulates diverse T and B cell responses including cell proliferation, survival and gene expression. IL-4 is produced by mast cells, T cells, and bone marrow stromal cells. IL-4 regulates the differentiation of naive CD4+ T cells into helper Th2 cells, characterized by their Cytokine-secretion profile that includes secretion of IL-4, IL-5, IL-6, IL-10, and IL-13, which favor a humoral immune response. Another dominant function of IL-4 is the regulation of immunoglobulin class switching to the IgG1 and IgE isotypes. Excessive IL-4 production by Th2 cells has been associated with elevated IgE production and allergic response.
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