Human Activin A (激活素A) ELISA kit,货号:CHE0038
激活素(activin)是转化生长因子 TGFβ超家族成员,根据其亚单位的结合形式不同,分为 activinA、activinB、activinAB 三种。activinA 是一种具有广泛生物学作用的细胞因子,在细胞坏死、炎症、肿瘤等病理过程中发挥重要作用。研究表明,activinA 可以诱导多种肿瘤细胞的凋亡。
激活素 A(Activin A)是同源二聚体并且属于转化生长因子β(TGF-β)超家族一员,起初在生殖系统发现激活素 A 的作用,尤其是激活素 A 促进垂体性腺激素及卵泡刺激激素释放,随后在不同的系统发现激活素 A 具有多种功能,包括造血功能及免疫细胞的形成功能。文献报道,激活素 A 主要参与炎症、切口愈合、免疫调控、细胞增殖、分化、凋亡、代谢、内分泌等过程。研究发现,在小鼠骨髓模型中激活素 A 蛋白高表达,而基因低表达;在细胞模型中,激活素 A 主要来源于骨髓间质细胞、内皮细胞、肥大细胞、肌内皮细胞;在炎症反应中,激活素A 主要来源于纤维母细胞、单核巨噬细胞、胎盘细胞、骨髓间质细胞、睾丸或卵巢内皮细胞等。激活素 A 在心脏组织中表达而且在心肌细胞中的活性最高,同时,心脏外膜的脂肪组织也可产生激活素 A。
激活素 A 具有广泛的生物学作用,尤其是作为重要的炎症和纤维化因子参与不同心脏疾病的病理过程。目前,激活素 A 的特异性抑制剂卵泡抑素作为潜在的治疗靶点,已经用于治疗在体动物模型的肺纤维化、肝纤维化、结肠炎及过敏性哮喘。
检测原理
本实验采用双抗体夹心 ELISA。用抗人 ADAMTS4 单克隆抗体预包被酶标板,加入适度稀释的样本和标准品,其 中的ADAMTS4 会与其单抗结合,洗去游离成分;加入生物素化的抗人 ADAMTS4 抗体,抗人ADAMTS4 抗体与 结合在单抗上的人ADAMTS4 结合而形成免疫复合物,洗去游离的成分;加入辣根过氧化物酶标记的亲合素,生 物素与亲合素特异性结合,洗去未结合的酶结合物;加入显色剂,若反应孔中有 ADAMTS4,辣根过氧化物酶会 使无色的显色剂现蓝色;加终止液变黄。在 450nm下测OD值,ADAMTS4 浓度与OD450 值之间呈正比,可通 过绘制标准曲线计算出标本中 ADAMTS4 浓度。

操作流程

| Product name | Human Activin A ELISA KIT |
| Catalog no | CHE0038 |
| Detection method | Colorimetric |
| Sample type | Cell culture supernatant, Serum, Plasma |
| Assay type | Sandwich (quantitative) |
| Sensitivity | 62 pg/mL |
| Assay range | 125 - 8000 pg/mL |
| Assay length | 3.5 hours |
| Assay procedure | Multiple steps standard assay |
| Specificity | Reacts with: Human |
| Product information | The Human Activin A ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for detection of Activin A in human plasma, serum, and cell culture samples.This assay employs a quantitative sandwich enzyme immunoassay technique that measures human Activin A in approximately 3.5 hours. A polyclonal antibody specific for human Activin A has been pre-coated onto a 96-well microplate with removable strips. Activin A in standards and samples is sandwiched by the immobilized antibody and a biotinylated polyclonal antibody specific for human Activin A , which is recognized by a streptavidin-peroxidase (SP) conjugate. All unbound material is washed away and a peroxidase enzyme substrate is added. The color development is stopped and the intensity of the color is measured. |
| Background | |
| Tested application | Suitable for: Sandwich ELISA |
| Format | Pre-coated microplate (12 x 8 well strips) |
| Properties | |
| Storage | Store at 2 – 8℃. Please refer to protocols. |
| Components | 1 x 96 tests |
| Antibody-coated microplate | 1 unit |
| Standard (Lyophilized) | 1 x 2 vials |
| Antibody conjugate concentrate | 1 x 2 vials |
| Streptavidin-HRP solution | 1 x 2 vials |
| Standard/sample diluent | 1 bottle |
| Antibody diluent buffer | 1 bottle |
| Streptavidin-HRP diluent | 1 bottle |
| Wash Buffer Concentrate 20X | 1 bottle |
| Substrate solution | 1 vial |
| Stop solution | 1 vial |
| Adhesive Films | 4 pieces |
image of Human Activin A ELISA KIT

Representative standard curve for Activin A ELISA. Activin A was diluted in serial two-fold steps in Sample Diluent.