Fibronectin CS1 Peptide
目录号 : GC36042
连接片段 1 (CS-1) 是位于纤维连接蛋白的 III 型同源连接段 (IIIC) 中的细胞连接域。Fibronectin CS1 Peptide 缺乏 Arg-Gly-Asp 结构域，在自发和实验性转移模型中能有效抑制肿瘤转移。
Cas No.:136466-51-8
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
The connecting segment 1 (CS-1) is a cell attachment domain located in the type III homology connecting segment (IIICS) of fibronectin. Fibronectin CS1 Peptide lacks the Arg-Gly-Asp-containing domain, actively inhibits tumor metastases in spontaneous and experimental metastasis models[1].
[1]. Saiki I, et al. Inhibition of lung metastasis by synthetic and recombinant fragments of human fibronectin with functional domains. Jpn J Cancer Res. 1990 Oct;81(10):1003-11.
| Cas No. | 136466-51-8 | SDF | |
| 分子式 | C38H64N8O15 | 分子量 | 872.96 |
| 溶解度 | Soluble in DMSO | 储存条件 | Store at -20°C |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 1.1455 mL | 5.7276 mL | 11.4553 mL |
| 5 mM | 0.2291 mL | 1.1455 mL | 2.2911 mL |
| 10 mM | 0.1146 mL | 0.5728 mL | 1.1455 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Exosomes released during reticulocyte maturation bind to fibronectin via integrin alpha4beta1
Eur J Biochem 2000 Jan;267(2):583-90.PMID:10632729DOI:10.1046/j.1432-1327.2000.01036.x.
Exosomes are vesicles formed in the endosomal compartment and released in the extracellular medium during reticulocyte maturation into erythrocytes. They have a clearing function because of their enrichment with some proteins known to decrease or disappear from the cell surface during maturation, e.g. acetylcholinesterase and transferrin receptor. We show here that integrin alpha4beta1, present on the surface of erythroid precursors but absent from the mature red cell membrane, is at least partly cleared from the reticulocyte plasma membrane by the exosomal pathway. Using flow cytometry, we found that the alpha4 subunit disappears from the reticulocyte surface during in vitro maturation. Two different monoclonal antibodies (B-5G10 and HP 2/1) were used to demonstrate the presence of the alpha4 chain on the exosome surface. Moreover, membrane acetylcholinesterase and lumenal peroxidase-like (i.e. hemoglobin) enzymatic activities were assayed to demonstrate exosome binding to plates coated with increasing fibronectin (FN) concentrations. This interaction was dependent on divalent cations (MnCl2 > MgCl2 > CaCl2). Similarly, vesicles bound to plates coated with the chymotryptic 40 K fragment (FN-40) containing the heparin-binding region of FN. This binding was inhibited by exosome preincubation with Fibronectin CS1 Peptide and with a monoclonal antibody (HP 2/1) against the integrin alpha4-chain, confirming an alpha4beta1-induced interaction. The importance of the exosome clearance function is highlighted here, since the presence of VLA-4 on reticulocytes often leads to blood circulation complications in some diseases. Moreover, the presence of alpha4beta1 on the exosome surface, by allowing binding to endothelial cells through vascular cell adhesion molecule 1 (VCAM-1), might confer another physiological function to the secreted vesicles.