重组绵羊IFN-τ
产品名称: 重组绵羊IFN-τ
英文名称: Recombinant Ovine Interferon-tau
产品编号: HZ600063
产品价格: 0
产品产地: 中国/上海
品牌商标: HZbscience
更新时间: 2023-08-17T10:24:20
使用范围: null
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重组绵羊IFN-τ
附带条件
特技
IFN-γ是绒毛滋养层分泌的Ⅰ型IFN,是绵羊妊娠母体识别的信号。IFN-γ具有与其他I型干扰素相似的免疫抑制和抗病毒活性,但其细胞毒活性低于IFN-α/β。目前的研究涉及重组绵羊IFN tau(ROVIFNτ)对克隆的小鼠脑血管内皮细胞(CVE)MHC I和II表达的调节作用。IFN tau诱导STAT1酪氨酸磷酸化,上调CVE的MHCⅠ类表达。I型干扰素降低MS复发率的一个提议是通过干扰素-γ诱导的MHC II类表达的干扰。IFN-γ可下调IFN-γ诱导的CVE的MHCⅡ类表达,从而对中枢神经系统(CNS)的炎症反应具有潜在的治疗价值。IFN-γ不上调CVE中MHCⅡ类的表达。IFN-γ对CVE病毒的复制也有抑制作用。
附带条件
该材料由Sangon生物技术公司提供,用于研究、实验室或进一步评估目的。不适合人类使用。
附带条件
物理外观无菌过滤白冻干(冻干)粉末。
纯度为95%以上,采用SDS-PAGE和HPLC分析。
来源Pichia Pastoris
与IFN-α相比,生物活性完全具有生物活性。病毒抗性测定的比活力不低于1×107 IU/mg。
用0.2μm过滤浓缩液在pH 7.4的PBS中进行冻干。
LaL法测定内毒素低于1μg/μg的EU。
我们建议在打开之前将这个小瓶简单地离心,以将内容物带到底部。在含0.1% BSA的无菌蒸馏水或含水缓冲液中重组,浓度为0.1-1.0mg/mL。原料溶液应分摊到工作等分试样中,并储存在小于20℃的温度下,应在适当的缓冲溶液中进一步稀释。
AAA序列CysRKLMLDLD MNRLSPHSCL QDRKDFGLPQQ EVGEDQLQQE-LQQSFNFLYTT LQQSFNFLDTT LQQLCTGLQQQQLDHLDTCR GQVMLDGEDSE LGNMLDPIVTV KKYFQGYDY LQEKGYSDCA
概述
IFN-τ is a new class of type I IFN that is secreted by the trophoblast and is the signal for maternal recognition of pregnancy in sheep. IFN-τ has potent immunosuppressive and antiviral activities similar to other type I IFN but is less cytotoxic than IFN-α/β. The current investigation concerns the effect of recombinant ovine IFN-tau (rOvIFN-τ) on the modulation of MHC class I and II expression on cloned mouse cerebrovascular endothelial (CVE) cells. IFN-tau induced tyrosine phosphorylation of Stat1 and up regulated the expression of MHC class I on CVE. One proposed action by which type I IFN reduce the relapse rate in MS is via interference with IFN-γ-induced MHC class II expression. IFN-τwas shown to down regulate IFN-γ-induced MHC class II expression on CVE and, hence, may be of potential therapeutic value in down regulating inflammation in the central nervous system (CNS). IFN-τdid not upregulate the expression of MHC class II on CVE. IFN-τalso inhibited the replication of Theilers virus in CVE.
使用说明
This material is offered by Sangon Biotech for research, laboratory or further evaluation purposes. NOT FOR HUMAN USE.
技术规格
Physical Appearance | Sterile Filtered White lyophilized (freeze-dried) powder. |
Purity | > 95 % by SDS-PAGE and HPLC analyses. |
Source | Pichia Pastoris |
Biological Activity | Fully biologically active when compared to IFN-alpha. The specific activity determined by a viral resistance assay is no less than 1.0 × 107 IU/mg. |
Formulation | Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.4. |
Endotoxin | Less than 1 EU/μg of rOvIFN-τ as determined by LAL method. |
Reconstitution | We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20°C. Further dilutions should be made in appropriate buffered solutions. |
AA Sequence | CYLSRKLMLD ARENLKLLDR MNRLSPHSCL QDRKDFGLPQ EMVEGDQLQK DQAFPVLYEM LQQSFNLFYT EHSSAAWDTT LLEQLCTGLQ QQLDHLDTCR GQVMGEEDSE LGNMDPIVTV KKYFQGIYDY LQEKGYSDCA WEIVRVEMMR ALTVSTTLQK RLTKMGGDLN SP |