Rituximab；利妥昔单抗
分子式：C6416H9874N1688O1987S44分子量：144.54KD
简介：Rituximab是用于治疗某些自身免疫疾病和癌症类型的抗CD20嵌合单克隆抗体。
产品形式：蛋白原液 。每种装于冻存管中，单抗质量为标示数量1MG或者5MG，体积根据其浓度不同略有不同。
缓冲液组分：7.35 mg/ml枸橼酸（二水）、9 mg/ml氯化钠、0.7 mg/ml 聚山梨酯 80；
轻链：>Rituximab light chain chimeric
QIVLSQSPAILSASPGEKVTMTCRASSSVSYIHWFQQKPGSSPKPWIYATSNLASGVPVR
FSGSGSGTSYSLTISRVEAEDAATYYCQQWTSNPPTFGGGTKLEIKRTVAAPSVFIFPPS
DEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTL
SKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC
重链：>Rituximab heavy chain chimeric
QVQLQQPGAELVKPGASVKMSCKASGYTFTSYNMHWVKQTPGRGLEWIGAIYPGNGDTSY
NQKFKGKATLTADKSSSTAYMQLSSLTSEDSAVYYCARSTYYGGDWYFNVWGAGTTVTVS
AASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQS
SGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKAEPKSCDKTHTCPPCPAPELLG
GPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQY
NSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSRD
ELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSR
WQQGNVFSCSVMHEALHNHYTQKSLSLSPGK
质量标准：
Non-reduced CE-SDS:………………………………………….>90%;
SEC-HPLC:………………………………………………………….>95%;
Bacterial Endotoxins Test：…………………………………. .<10EU/ml
Residual Proteins of Host Cell: ……………………………. <100 ng/mg
Exogenous residual DNA: …………………………………. . <100pg/mg
Residual Protein A: ……………………………………………. .<100 ng/mg
Biological Activity:………………………………………….……. .80% to 125% of standard
储存条件：-70 ± 15℃for long-term storage, 2-8℃for short-term storage, away from light.
运输条件：干冰运输
使用建议：
meilunbio提供的产品为蛋白原液形式。每种装于冻存管中，单抗质量为标示数量1MG或者5MG，体积根据其浓度不同略有不同。
使用前可以根据自己实验需求进行稀释，溶剂建议用去离子无菌水(meilunbio货号MA0028，去离子无菌水(细胞培养用水))或者PBS（meilunbio货号MA0015 PBS(1X),细胞培养级）。
不建议使用含有防腐成分的稀释液进行稀释，会增加细胞或者动物毒性。
稀释前，计算加入多少体积溶剂，请参考购买批次质检单上蛋白浓度，或者询问我司，
举例，质检单显示该批次单抗蛋白原液蛋白浓度为 50mg/ml
对应5MG包装的蛋白原液体积为5mg（质量）/50mg/ml(浓度)=0.1ML，
实验需求蛋白浓度为10mg/ml, 需要稀释倍数为 50/10=5, 则需要加入0.4ML,即400ul PBS或者无菌去离子水即可。
若给药量为固定质量值，比如单次给药0.5MG，对应蛋白原液给药体积为10ul，建议稀释后，提高给药体积降低误差，因为注射器或者移液器吸头残留会影响实验效果。
稀释后的蛋白溶液，可于2-8度冷藏避光保存不超过2周，不建议长期储存。
避免反复冻融，每次冻融蛋白活性会降低约5%左右。
生物活性（仅来自于公开文献，不保证其有效性）
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描述
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Rituximab is an anti-CD20 chimeric monoclonal antibody used to treat certain autoimmune diseases and types of cancer.. |
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靶点 |
CD20 |
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体外 |
Rituximab inhibits the proliferation of stimulated human B cells, which is associated with a relative increase of B cells with an activated naive phenotype. Aside from this population shift, there are no major changes in phenotype or cytokine profile of the various B-cell subsets. B cells stimulated in the presence of rituximab induces stronger T-cell proliferation, compared to B cells stimulated in the absence of rituximab. All lymphoma cells tested are equally sensitive to antibody-dependent cell-mediated cytotoxicity (ADCC), antibody-mediated phagocytosis of tumor cells, and rituximab-induced apoptosis. Rituximab induces high CDC killing of follicular lymphoma cells. |
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体内 |
A single injection of rituximab or the murine anti-CD20 Ab 1F5, given i.p. 1 day after the tumor, cures 100% of the animals. Depletion of either NK cells or neutrophils or both in tumor-injected animals does not affect the therapeutic activity of the drug. Similarly, rituximab is able to eradicate tumor cells in athymic nude mice, suggesting that its activity is T cell independent. |
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用途及描述：仅供科研，严禁用于人体(For R&D Only)
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