Exosome(外泌体)是来源于膜的纳米级囊泡,直径在30至150 nm,它们是在正常和病理条件下由许多类型的细胞释放的。exosome对细胞功能的影响已经与各种生理过程相关联,包括:细胞间通讯、癌症转移、免疫调节活性以及传染物(如朊病毒和逆转录病毒)的传播。鉴于这种广泛的潜在相互作用,并考虑到这些纳米级囊泡包含原先细胞的RNA、microRNA和蛋白质,exosome代表了生物标志物发现的一个新兴靶点。
Biogenesis and Composition of Exosomes
外泌体诊断对于临床意义
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● 促进肿瘤发生,控制转移灶形成和肿瘤免疫反应
● 作为循环生物标志物(miRNAs)
● 作为抗肿瘤化合物载体 |
癌症 |
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● 对心脏重塑、血管形成等具有病理作用
● 作为潜在生物标志物来评价心血管疾病风险
● 作为心血管系统传递系统或载体 |
心血管疾病 |
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● 一些肝脏相关细胞是外泌体分泌/ 靶向细胞
● 肝脏外泌体可以作为诊断和预后的生物标志物
● 作为新的肝病治疗法 |
肝脏疾病 |
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● 尿液中的外泌体反应了泌尿系统的从足细胞到肾小管
● 作为肾脏疾病的潜在生物标志物 |
肾病 |
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● 作为传递神经退行性疾病相关蛋白的载体
● 作为神经细胞状态判别的潜在生物标志物 |
神经退行性疾病 |
外泌体研究方法
优宁维提供多款外泌体研究的方法试剂:
超滤方法纯化外泌体
Amicon® Ultra-15 超滤管(10 kDa MWCO)
• 用Steriflip® 真空抽滤对样品进行澄清(目录号 SCGP00525;0.22 μm Millipore Express PLUS(PES)膜)。
• 用PBS平衡Amicon® Ultra-15超滤管(目录号 UFC901024,10 kDa MWCO),离心4000g x 10 min。
• 从超滤管内管及收集管吸走PBS。
• 向超滤管加入15 mL样品。
• 4000g离心30 min浓缩。
• 倒空收集管。
• 加入14 mL PBS进行缓冲液置换,温柔吸打样品数次。4000g离心30 min。
• 从浓缩管吸回处理好的样品。(30x 浓缩)
注意:所有Amicon® Ultra-15超滤管(0.5、2.4和15 mL)与此操作流程兼容。
外泌体免疫捕获和定量试剂盒可以提供多种样本中外泌体检测和定量方案:
• 多种样本适用
• 100μl样本完成相对或绝对定量
• 检测采用夹心法ELISA原理,灵敏度高
外泌体相关RNA提取试剂盒
Description |
Sample Type |
Catalog No. |
Exosome RNA Extraction |
Pre-Isolated Exosomes |
NBP2-49789 /K1222-20/ K1222-30 |
Overall Exosome Capture and RNA Extraction |
Biofluids, Cell Media |
NBP2-49784 / K1220-10 / K1220-20 |
Tumor-derived Exosome Capture & RNA Extraction |
Biofluids |
NBP2-49788 / K1221-10 / K1221-20 |
Sample prep and detection of Exosome/Exosomal RNA |
纯化提取 |
exoRNeasy Serum/Plasma Maxi Kit (50) |
77064 |
过柱子直接提取RNA |
exoRNeasy Serum/Plasma Midi Kit (50) |
77044 |
过柱子直接提取RNA |
exoRNeasy Serum/Plasma Starter Kit (20) |
77023 |
过柱子直接提取RNA |
exoEasy Maxi Kit (20) |
76064 |
过柱子直接提取exosome |
外泌体的捕获和分离
产品特点:免疫板预先包被外泌体marker抗体,用于其捕获和分离;仅需100ul样品;操作简单、即用型。
货号 |
产品名称 |
NBP2-49802 |
Overall Exosome Isolation from Biofluids |
NBP2-49803 |
Overall Exosome Isolation from Biofluids |
NBP2-49804 |
Overall Exosome Isolation from Biofluids |
NBP2-49805 |
Overall Exosome Isolation from Serum |
NBP2-49806 |
Overall Exosome Isolation from Serum |
NBP2-49807 |
Overall Exosome Isolation from Serum |
NBP2-49808 |
Overall Exosome Isolation from Saliva |
NBP2-49809 |
Overall Exosome Isolation from Saliva |
NBP2-49810 |
Overall Exosome Isolation from Saliva |
NBP2-49811 |
Overall Exosome Isolation from Cell Media |
NBP2-49812 |
Overall Exosome Isolation from Cell Media |
NBP2-49813 |
Overall Exosome Isolation from Cell Media |
NBP2-49814 |
Tumor-derived Exosome Isolation from Plasma |
NBP2-49815 |
Tumor-derived Exosome Isolation from Plasma |
NBP2-49816 |
Tumor-derived Exosome Isolation from Plasma |
NBP2-49800 |
Neural-derived Exosome Isolation from Plasma |
NBP2-49817 |
Neural-derived Exosome Isolation from Plasma |
NBP2-49818 |
Neural-derived Exosome Isolation from Plasma |
NBP2-49819 |
Glial-derived Exosome Isolation from Plasma |
NBP2-49820 |
Glial-derived Exosome Isolation from Plasma |
NBP2-49821 |
Glial-derived Exosome Isolation from Plasma |
NBP2-49822 |
Monocytes/Platelet-derived Exosome Isolation from Plasma |
NBP2-49823 |
Monocytes/Platelet-derived Exosome Isolation from Plasma |
NBP2-49824 |
Monocytes/Platelet-derived Exosome Isolation from Plasma |
乳胶微球共价结合外泌体marker相关抗体,用于从体液或细胞培养上清中分离外泌体。该方法不要求超速离心或预纯化步骤。
产品特点:富集分离外泌体;分离后便于解离,与下游实验兼容;提供0.4um和1.0um两种大小的微球;使用简单、高效、快速。
* 产品原理图 *
应用:
• 从样本中获取总外泌体 • 小体积样本适用 • 无需超速离心和其他预富集方式 • 下游适用于核酸纯化、蛋白质分析
Size of Beads |
Usefulness |
Sample |
Catalog No. |
0.4 µm |
Overall Exosome Isolation |
Cell media |
NBP2-49826 |
1.0 µm |
Overall Exosome Isolation |
Cell media |
NBP2-49828 |
0.4 µm |
Tumor-Derived Exosome Isolation |
Biofluids |
NBP2-49829 |
1.0 µm |
Tumor-Derived Exosome Isolation |
Biofluids |
NBP2-49830 |
0.4 µm |
Overall Exosome Isolation |
Biofluids |
NBP2-49835 |
1.0 µm |
Overall Exosome Isolation |
Biofluids |
NBP2-49836 |
0.4 µm |
Overall Exosome Isolation |
Mouse biofluids |
NBP2-49831 |
1.0 µm |
Overall Exosome Isolation |
Mouse biofluids |
NBP2-49832 |
0.4 µm |
Overall Exosome Isolation |
Mouse cell media |
NBP2-49833 |
1.0 µm |
Overall Exosome Isolation |
Mouse cell media |
NBP2-49834 |
外泌体的捕获和分离
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超速离心/ 密度梯度离心 |
免疫捕获 |
● 耗时耗力(>30hrs)
● 通量低(最多一次6个样本)
● 对样本量要求高
● 产量和得率低 |
● 省时省力(5-12hrs)
● 通量高(同时可准备几十个样本)
● 对样本量低(0.5-1ml)
● 产量和得率高 |
外泌体标准品
产品特点:用于阳性质控;源于多种样本;经多种实验(FCM,WB,ELISA)反复验证。
外泌体蛋白分析
多因子检测在外泌体研究中应用
磷酸酶通过外泌体影响肿瘤转移
POPX2敲低的MDA-MB-231细胞的分泌蛋白组(Secretome)分析显示,POPX2的沉默会导致外泌体的分泌增加,这可能反过来诱导多种促血管生成的细胞因子的产生。
Exosomes released by chronic lymphocytic leukemia cells induce the transition of stromal cells into cancer-associated fibroblasts
磷酸激酶抗体芯片的应用 —— 应用该抗体芯片,快速筛选CLL exosomes所激活的基质细胞信号通路
Exosomes released by chronic lymphocytic leukemia cells induce the transition of stromal cells into cancer-associated fibroblasts
细胞因子抗体芯片的应用 —— 应用该抗体芯片,快速检测CLL exosomes所刺激的基质细胞细胞因子分泌
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