人TNF alpha ELISA试剂盒(ab181421)
Key features and details
- One-wash 90 minute protocol
- Sensitivity: 4.32 pg/ml
- Range: 15.63 pg/ml - 1000 pg/ml
- Sample type: Cell culture supernatant, Cerebral Spinal Fluid, Cit plasma, EDTA Plasma, Hep Plasma, Serum
- Detection method: Colorimetric
- Assay type: Sandwich (quantitative)
- Reacts with: Human
概述
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产品名称
人TNF alpha ELISA试剂盒
参阅全部 TNF alpha 试剂盒 -
检测方法
Colorimetric -
精确度
批次内 样品 n Mean SD CV% PBMC media 8 2.5% 批次间 样品 n Mean SD CV% PBMC media 3 3.1% -
样品类型
Cell culture supernatant, Serum, Hep Plasma, EDTA Plasma, Cit plasma, Cerebral Spinal Fluid -
检测类型
Sandwich (quantitative) -
灵敏度
4.32 pg/ml -
范围
15.63 pg/ml - 1000 pg/ml -
回收率
特定样本回收率 样品类型 平均% 范围 Cell culture supernatant 110 105% - 113% Serum 88 83% - 93% Hep Plasma 98 89% - 110% EDTA Plasma 100 95% - 104% Cit plasma 91 86% - 97% Cerebral Spinal Fluid 83 80% - 88% -
检测时间
1h 30m -
实验步骤
One step assay -
种属反应性
与反应: Human -
产品概述
Human TNF alpha ELISA kit (ab181421) is a single-wash 90 min sandwich ELISA designed for the quantitative measurement of TNF alpha protein in human serum, plasma and culture media. It uses our proprietary SimpleStep ELISA® technology. Quantitate human TNFa with 4.32 pg/mL sensitivity.
SimpleStep ELISA® technology employs capture antibodies conjugated to an affinity tag that is recognized by the monoclonal antibody used to coat our SimpleStep ELISA® plates. This approach to sandwich ELISA allows the formation of the antibody-analyte sandwich complex in a single step, significantly reducing assay time. See the SimpleStep ELISA® protocol summary in the image section for further details. Our SimpleStep ELISA® technology provides several benefits:
-Single-wash protocol reduces assay time to 90 minutes or less
-High sensitivity, specificity and reproducibility from superior antibodies
-Fully validated in biological samples
-96-wells plate breakable into 12 x 8 wells strips
A 384-well SimpleStep ELISA® microplate (ab203359) is available to use as an alternative to the 96-well microplate provided with SimpeStep ELISA® kits.
ASSAY SPECIFICITY This kit recognizes both native and recombinant human TNF alpha protein in serum, plasma, and cell culture supernatant samples only.
CROSS REACTIVITY Recombinant proteins were prepared at 1000 pg/mL and assayed for cross reactivity. No cross reactivity was found for the following targets: - Human IL-2 - Human IL-4 - Human IL-1 alpha - Human IFN gamma - Human TNF beta - Human TNF R1.
INTERFERENCE Recombinant Human TNF R1 was prepared at 1000 pg/mL and tested for interference. No interference with was observed.
SPECIES REACTIVITY This kit recognizes human TNF alpha protein. Other species reactivity was determined by measuring 1000 pg/mL recombinant proteins of various species, interpolating the protein concentrations from the human standard curve, and expressing the interpolated concentrations as a percentage of the protein concentration assayed at the same dilution. Reactive species: Primate
Reactivity < 3% was determined for the following species: Mouse/Rat
CALIBRATION This immunoassay is calibrated against a highly purified human TNF alpha. The NIBSC/WHO unclassified purified human TNF alpha preparation 12/154 was evaluated in this kit. The dose response curve of the unclassified standard TNF alpha parallels the SimpleStep standard curve. To convert sample values obtained with the SimpleStep Human TNF alpha kit to approximate NIBSC 12/154 International units, use the equation below.
NIBSC (12/154) approximate value (IU/mL) = 0.094 x SimpleStep Human TNF alpha value (pg/mL).
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说明
TNF-alpha, also known as cachectin or TNFSF1A, is the prototypic ligand of the TNF superfamily which plays a central role in inflammation, apoptosis, proliferation, invasion, angiogenesis, metastasis and morphogenesis. It is expressed on macrophages, endothelial, epithelial and tumor cells as a 26kDa transmembrane protein. TNF-alpha is cleaved by proteolytic processing into six chains: (1) TNF membrane form, (2) Intracellular domain 1, (3) Intracellular domain 2, (4) C-domain 1, (5) C-domain 2 and (6) TNF soluble form. Signaling from TNF-alpha differs depending on the type of ligand initiating the signaling event (intracellular, membrane or soluble). As an example, the membrane form of TNF-alpha appears to mediate anti-tumorigenic therapeutic responses whereas the soluble ligand is linked to inflammation and proliferation.
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经测试应用
适用于: Sandwich ELISAmore details -
平台
Microplate
性能
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存放说明
Store at +4°C. Please refer to protocols. -
组件 1 x 96 tests 10 x 96 tests 1 x 384 tests 10X Wash Buffer PT (ab206977) 1 x 20ml 1 x 200ml 1 x 20ml 384 well CaptSure™ microplates 0 x 0 unit 0 x 0 unit 1 unit Antibody Diluent 4BR 1 x 6ml 10 x 6ml 1 x 6ml Human TNFa Capture Antibody 1 x 600µl 10 x 600µl 1 x 600µl Human TNFa Detector Antibody 1 x 600µl 10 x 600µl 1 x 600µl Human TNFa Lyophilized Recombinant Protein 2 vials 2 x 10 vials 2 vials Plate Seal 1 unit 10 units 1 unit Sample Diluent NS (ab193972) 1 x 50ml 2 x 250ml 2 x 50ml SimpleStep Pre-Coated 96-Well Microplate (ab206978) 1 unit 10 units 0 x 0 unit Stop Solution 1 x 12ml 1 x 120ml 2 x 12ml TMB Development Solution 1 x 12ml 1 x 120ml 2 x 12ml -
研究领域
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功能
Cytokine that binds to TNFRSF1A/TNFR1 and TNFRSF1B/TNFBR. It is mainly secreted by macrophages and can induce cell death of certain tumor cell lines. It is potent pyrogen causing fever by direct action or by stimulation of interleukin-1 secretion and is implicated in the induction of cachexia, Under certain conditions it can stimulate cell proliferation and induce cell differentiation. -
疾病相关
Genetic variations in TNF are a cause of susceptibility psoriatic arthritis (PSORAS) [MIM:607507]. PSORAS is an inflammatory, seronegative arthritis associated with psoriasis. It is a heterogeneous disorder ranging from a mild, non-destructive disease to a severe, progressive, erosive arthropathy. Five types of psoriatic arthritis have been defined: asymmetrical oligoarthritis characterized by primary involvement of the small joints of the fingers or toes; asymmetrical arthritis which involves the joints of the extremities; symmetrical polyarthritis characterized by a rheumatoidlike pattern that can involve hands, wrists, ankles, and feet; arthritis mutilans, which is a rare but deforming and destructive condition; arthritis of the sacroiliac joints and spine (psoriatic spondylitis). -
序列相似性
Belongs to the tumor necrosis factor family. -
翻译后修饰
The soluble form derives from the membrane form by proteolytic processing.
The membrane form, but not the soluble form, is phosphorylated on serine residues. Dephosphorylation of the membrane form occurs by binding to soluble TNFRSF1A/TNFR1.
O-glycosylated; glycans contain galactose, N-acetylgalactosamine and N-acetylneuraminic acid. -
细胞定位
Secreted and Cell membrane. - Information by UniProt
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别名
- APC1
- APC1 protein
- Cachectin
see all -
数据库链接
- Entrez Gene: 7124 Human
- Omim: 191160 Human
- SwissProt: P01375 Human
- Unigene: 241570 Human
相关产品
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Alternative Versions
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ELISA kits
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KO cell lines
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Related Products
应用
The Abpromise guarantee
Abpromise™承诺保证使用ab181421于以下的经测试应用
“应用说明”部分 下显示的仅为推荐的起始稀释度;实际最佳的稀释度/浓度应由使用者检定。
应用 | Ab评论 | 说明 |
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Sandwich ELISA |
Use at an assay dependent concentration.
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说明 |
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Sandwich ELISA
Use at an assay dependent concentration. |
图片
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SimpleStep ELISA technology allows the formation of the antibody-antigen complex in one single step, reducing assay time to 90 minutes. Add samples or standards and antibody mix to wells all at once, incubate, wash, and add your final substrate. See protocol for a detailed step-by-step guide.
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Example of human TNF alpha standard curve in 96-well vs. 384-well plate. Background-subtracted data values (mean +/- SD) are graphed.
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Standard Curve comparison between human TNF alpha SimpleStep ELISA kit and traditional ELISA kit from leading competitor. SimpleStep ELISA kit shows increased sensitivity.
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The TNF alpha standard curve was prepared as described in Section 10. Raw data values are shown in the table. Background-subtracted data values (mean +/- SD) are graphed.
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Raw data values are shown in the table
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PBMC cells were treated with 1.5% PHA-M for 46 hours in 10F RPMI. The concentrations of TNF alpha were measured in duplicates, interpolated from the TNF alpha standard curve and corrected for sample dilution. Undiluted samples are PHA-M treated PBMC cell culture supernatant 10%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean TNF alpha concentration was determined to be 7326.31 pg/mL in PHA-M treated PBMC cell culture supernatant.
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PBMC cells were stimulated with 1.5% PHA-M or vehicle control in 10F RPMI and incubated for 46 hours. The concentrations of TNF alpha were measured in duplicate and interpolated from the TNF alpha standard curves. Undiluted samples are PHA-M stimulated PBMC cell culture supernatant 10% and unstimulated PBMC cell culture supernatant 10%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean TNF alpha concentration was back calculated determined to be 7265.71 pg/mL in PHA-M stimulated PBMC cell culture supernatant and undetectable in the unstimulated PBMC control.
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Native TNF alpha was measured in biological samples in a 2-fold dilution series. Sample dilutions are made in Sample Diluent NS.
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Recombinant TNF alpha was spiked biological samples and diluted in a 2-fold dilution series in Sample Diluent NS. Twenty individual healthy human female/male donors were measured in duplicate for the presence of TNF alpha. All values were below the detectable range of the assay
NL – Non-Linear -
Human TNF alpha concentration was interpolated from the standard curve. Supernatants from cell culture samples were serially diluted and assessed by the Human TNF alpha ELISA kit (ab181421). Wild-type THP-1 and TNF alpha knockout THP-1 (ab273761) cells were assessed in duplicate (n=2). Cells were either treated with 100 ng/ml LPS for 16 h to induce expression of TNF alpha or not treated with LPS. Data are represented as the mean and error bars represent standard deviation.”
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To learn more about the advantages of recombinant antibodies see here.
数据表及文件
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SDS download
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Datasheet download
文献 (195)
ab181421 被引用在 195 文献中.
- Abdulfattah SY & Samawi FT Estimating the role of single-nucleotide polymorphism (rs1800629)-308 G/A of TNF-alpha gene as genetic marker associated with angina pectoris in a sample of Iraqi patients. J Genet Eng Biotechnol 21:2 (2023). PubMed: 36622512
- Ye T et al. LncRNA CCAT1 is overexpressed in tuberculosis patients and predicts their survival. Immun Inflamm Dis 10:218-224 (2022). PubMed: 34847295
- Zhang X & Sun Y Chromodomain Helicase DNA Binding Protein 1-like, a negative regulator of Forkhead box O3a, promotes the proliferation and migration of Angiotensin II-induced vascular smooth muscle cells. Bioengineered 13:2597-2609 (2022). PubMed: 35001835
- Li G et al. Knockdown of long non-coding RNA plasmacytoma variant translocation 1 relieves ox-LDL-induced endothelial cell injury through regulating microRNA-30c-5p in atherosclerosis. Bioengineered 13:2791-2802 (2022). PubMed: 35038974
- Ye Z et al. Long non-coding RNA cancer susceptibility candidate 2 regulates the function of human fibroblast-like synoviocytes via the microRNA-18a-5p/B-cell translocation gene 3 signaling axis in rheumatoid arthritis. Bioengineered 13:3240-3250 (2022). PubMed: 35045800