Human MMP-9 DTSet enzyme-linked immunoassay kit
概述
产品名称
Human MMP-9 DTSet enzyme-linked immunoassay kit
产品类型
DTSet Elisa Kit
| pg/ml | O.D. | Average | Corrected | |
|---|---|---|---|---|
| 0.00 | 0.0595 | 0.0577 | 0.0586 | |
| 31.25 | 0.1056 | 0.1117 | 0.1087 | 0.0501 |
| 62.50 | 0.1595 | 0.1609 | 0.1602 | 0.1016 |
| 125.00 | 0.2484 | 0.2479 | 0.2482 | 0.1896 |
| 250.00 | 0.4347 | 0.4316 | 0.4332 | 0.3746 |
| 500.00 | 0.7562 | 0.7608 | 0.7585 | 0.6999 |
| 1000.00 | 1.4550 | 1.4530 | 1.4540 | 1.3954 |
| 2000.00 | 2.6010 | 2.6230 | 2.6120 | 2.5534 |
实验类型
夹心酶联免疫吸附测定(Sandwich Elisa)
种属反应性
Human
检测方法
比色法
实验检测时长
120min
标准曲线范围
31.25 pg/ml-2000 pg/ml
标准曲线梯度
7点/3倍
孵育次数
2
可检测样本
可溶性物质的液相样品。例如:血清,血浆,细胞培养上清,组织研磨液等。
加样体积
50 μl
产品特性
- 优化的捕获和检测抗体配对与推荐浓度可节省较长的开发时间
- 提供开发方案以指导进一步的分析优化
- 检测可根据您的特定需求进行定制
- 完整试剂盒的经济替代品
试剂盒组分
- 捕获抗体
- 检测抗体
- 重组标准品
- 与辣根过氧化物酶偶联的链霉亲和素 (Streptavidin-HRP)
所需的其他材料
DTSet辅助试剂盒(5板):包含96孔微孔板、封板膜、显色液、终止溶液、包板缓冲液(PBS)、洗涤缓冲液和检测缓冲液。
上面列出的部件可以单独购买:
- 96孔微孔板板(EP): YOUKE Life, Catalog # DSEP01
- 封板木膜(PS): YOUKE Life, Catalog # DSSF01。
- 包板缓冲液(CB): 137mM NaCl,2.7mM KCl,8.1mM Na2HPO4,1.5mM KH2PO4,pH 7.2-7.4,0.2m过滤。YOUKE Life, Catalog # DSCB01。
- 检测缓冲液 10X(AB): 0.5%BSA,0.05%Tween20,PBS溶液。YOUKE Life, Catalog # DSAB01。
- 封闭液(BB): YOUKE Life, Catalog # DSBB01。
- Washing Solution: 0.05%Tween20,PBS溶液,pH 7.2-7.4。YOUKE Life, Catalog # DSWB01。
- 底物显色液(TMB): TMB。YOUKE Life, Catalog # DSTS01。
- 终止溶液(SS): 0.5mol/ml H2SO4。YOUKE Life, Catalog # DSSS01。
靶点
功能
基质金属蛋白酶(MMP),也称为基质蛋白,构成锌和钙依赖性内肽酶家族,其功能是细胞外基质(ECM)的分解和不同亚细胞环境中各种分子的加工。它们在许多正常的生理过程中起着重要作用,例如胚胎发育,形态发生,繁殖和组织重塑。他们还参与炎症和自身免疫性疾病,如关节炎、癌症和心血管疾病。虽然新合成的MMP的数量主要在转录水平上调节,但现有MMP的蛋白水解活性通过酶原或酶原的活化以及内源性抑制剂α2-巨球蛋白和金属蛋白酶(TIMPs)的组织抑制剂对活性酶的抑制来控制。
MMP-9(也称为明胶酶 B、92 kDa IV 型胶原酶、92 kDa 明胶酶和 V 型胶原酶)作为糖基化原酶分泌。酶原的活化涉及蛋白水解去除N端亲区,产生82 kDa活性酶。活跃的人MMP-9分别与小鼠和大鼠MMP-9具有72%和74%的氨基酸序列同一性。除了锌结合位点外,催化结构域还包含三个连续的纤连蛋白II型同源性单元,负责结合明胶。富含脯氨酸的铰链区域将催化结构域连接到C末端血红素样结构域。用4-氨基乙酸苯汞(APMA)对酶原进行体外处理不仅产生活性酶,而且还产生C端截短形式,其活性与活性形式相当。MMP-9降解ECM的成分,对变性胶原蛋白(明胶)具有高比活性。它可以切割III,IV,V和XI型的天然胶原蛋白,以及弹性蛋白,Nidogen-1和玻连蛋白。MMP-9 还可以裂解多种趋化因子和生长因子(例如 IL-1 β、CXCL8/IL-8、CXCL7、CXCL4、CXCL1、潜伏 TGF-β、膜结合的 TNF-α、VEGF 和 FGF 碱性)、淀粉样蛋白 β 肽、P 物质和髓磷脂碱性蛋白。这种作用可以增加或减少可溶性因子的生物活性,也可以将它们从与ECM的结合中解放出来。MMP-9还可以通过各种跨膜蛋白触发信号传导,或通过诱导它们从细胞表面脱落来抑制信号传导(例如CD44,E-钙粘蛋白,整合素,ICAM-1和IL-2 R α)。
MMP-9由多种正常和转化细胞产生,包括中性粒细胞、单核细胞、巨噬细胞、星形胶质细胞、成纤维细胞、破骨细胞、软骨细胞、角质形成细胞、内皮细胞和上皮细胞。它对脉管系统产生生理和病理血管生成和重塑作用。活化的中性粒细胞释放不含TIMP-1的proMMP-9,允许从ECM中释放促血管生成FGF-2。与TIMP-1复合物中的MMP-9不会诱导FGF-2释放。中性粒细胞衍生的MMP-9加剧炎症反应,部分原因是产生胶原蛋白衍生的肽,诱导额外的中性粒细胞MMP9的释放。MMP-9还参与骨形成和重塑,甲基苯丙胺诱导的行为致敏和奖励,神经元突触重塑的调节,植入过程中的滋养层侵袭以及Serpin α1-蛋白酶抑制剂的失活。MMP-9粘附蛋白的脱落对肿瘤细胞侵袭性有直接影响。
MMP-9的循环水平在许多炎症性疾病中升高,包括腔内血栓形成,动脉粥样硬化,克罗恩病,丙型肝炎病毒感染,结直肠癌和杜氏肌营养不良症。MMP-9 与 TIMP-1 的比率在多发性硬化血清和囊性纤维化痰中也升高,但在巨细胞病毒感染期间血清中降低。游离MMP-9和MMP-9与脂钙素-2 / NGAL的复合物水平分别在卵巢癌和子宫感染患者的尿液中升高。
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