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产品信息
优势特色（Features）
- Designed under ISO 9001:2015 and ISO 13485:2016
- Manufactured and QC tested under a GMP compliance factory
- Animal-Free materials
- Beta-lactam materials free
- Batch-to-batch consistency
- Stringent quality control tests
表达区间及表达系统（Source）
GMP Human TNF-alpha Protein (GMP-TNAH23) is expressed from human 293 cells (HEK293). It contains AA Val 77 - Leu 233 (Accession # P01375).
Predicted N-terminus: Val 77
Request for sequence
蛋白结构（Molecular Characterization）
This protein carries no "tag".
The protein has a calculated MW of 17.4 kDa. The protein migrates as 17 kDa±3 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
内毒素（Endotoxin）
Less than 10 EU/mg by the LAL method.
宿主蛋白残留（Host Cell Protein）
<0.5 ng/µg of protein tested by ELISA.
宿主核酸残留（Host Cell DNA）
<0.02 ng/μg of protein tested by qPCR.
无菌（Sterility）
The sterility testing was performed by membrane filtration method described in CP<1101>, USP<71> and Eur. Ph. 2.6.1.
支原体（Mycoplasma）
Negative.
纯度（Purity）
>95% as determined by SDS-PAGE.
>95% as determined by SEC-HPLC.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with protectants.
Contact us for customized product form or formulation.
运输（Shipping）
This product is supplied and shipped with blue ice, please inquire the shipping cost.
存储（Storage）
Upon receipt, store it immediately at -20°C or lower for long term storage.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 5 years in lyophilized state;
- -70°C for 12 months under sterile conditions after reconstitution.
产品数据图
电泳（SDS-PAGE）
GMP Human TNF-alpha Protein on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.
SEC-HPLC
The purity of GMP Human TNF-alpha Protein (Cat. No. GMP-TNAH23) was greater than 95% as determined by SEC-HPLC.
活性（Bioactivity）-Bioactivity CELL BASE
GMP Human TNF-alpha Protein (Cat. No. GMP-TNAH23) induces cytotoxicity effect on the WEHI-13VAR cells in the presence of the metabolic inhibitor actinomycin D. The specific activity GMP Human TNF-alpha Protein (Cat. No. GMP-TNAH23) is ≥ 2.00×10^7 IU/mg, which is calibrated against human TNF-alpha WHO International Standard (NIBSC code: 12/154) (QC tested).
Protocol
The activity of GMP Human TNF-alpha Protein (Cat. No. GMP-TNAH23) was consistent with competing products.
稳定性（Stability）
The Cell based assay shows that GMP Human TNF-alpha Protein (Cat. No. GMP-TNAH23) is stable at 37 ℃ for 24 hours.
The Cell based assay shows that GMP Human TNF-alpha Protein (Cat. No. GMP-TNAH23) is stable after freezing and thawing 3 times.
The Cell based assay shows that GMP Human TNF-alpha Protein (Cat. No. GMP-TNAH23) is stable at 4 ℃ for 180 days.
The Cell based assay shows batch-to-batch consistency between Acro's GMP and PG TNF-alpha.
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背景
Tumor necrosis factor alpha (TNFα) is a cytokine produced primarily by monocytes and macrophages. It is found in synovial cells and macrophages in the tissues.The primary role of TNFα is in the regulation of immune cells. TNFα is able to induce apoptotic cell death, to induce inflammation, and to inhibit tumorigenesis and viral replication. Dysregulation of TNFα production has been implicated in a variety of human diseases, including major depression, Alzheimers disease and cancer. Recombinant TNFα is used as an immunostimulant under the INN tasonermin. TNFα can be produced ectopically in the setting of malignancy and parallels parathyroid hormone both in causing secondary hypercalcemia and in the cancers with which excessive production is associated.
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