Description
Guinea pig TNF alpha ELISA Kit
The Guinea Pig TNF-alpha ELISA Kit is a powerful tool for detecting tumor necrosis factor alpha levels in guinea pig serum, plasma, and tissue homogenates. With superior sensitivity and specificity, this kit delivers accurate and consistent results for a variety of research applications.TNF-alpha is a key cytokine that plays a critical role in the regulation of immune responses, inflammation, and cell apoptosis. Dysregulation of TNF-alpha is linked to various diseases, including autoimmune disorders, inflammatory conditions, and infectious diseases.
This ELISA kit allows researchers to quantify TNF-alpha levels in guinea pig samples, providing valuable insights into disease mechanisms and potential therapeutic targets.Trust the Guinea Pig TNF-alpha ELISA Kit for precise measurement of TNF-alpha levels in your research samples, advancing your understanding of immune responses and inflammatory processes in guinea pigs.
| Product Name: | Guinea pig TNF alpha ELISA Kit |
| Product Code: | GPFI00049 |
| Size: | 96 Assays |
| Target: | Guinea pig TNF-alpha |
| Alias: | TNFalpha, Tumor Necrosis Factor Alpha, TNF-alpha, DIF, TNF-alpha, TNFA, TNFSF2 |
| Reactivity: | Guinea pig |
| Detection Method: | Sandwich ELISA, Double Antibody |
| Sensitivity: | 9.375pg/ml |
| Range: | 15.625-1000pg/ml |
| Storage: | 4°C for 6 months |
| Note: | For Research Use Only |
| Recovery: | Matrices listed below were spiked with certain level of Guinea pig TNF-alpha and the recovery rates were calculated by comparing the measured value to the expected amount of Guinea pig TNF-alpha in samples. | ||||||||||||||||
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| Linearity: | The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Guinea pig TNF-alpha and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected. | ||||||||||||||||
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| Intra-Assay: | CV <8% | ||||||||||||||||
| Inter-Assay: | CV <10% |
| Uniprot: | P51435 |
| UniProt Protein Function: | Function: 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.The TNF intracellular domain (ICD) form induces IL12 production in dendritic cells |
| UniProt Protein Details: | By similarity. Subunit structure: Homotrimer. Interacts with SPPL2B By similarity. Subcellular location: Cell membrane; Single-pass type II membrane protein By similarity. Tumor necrosis factor, membrane form: Membrane; Single-pass type II membrane protein By similarity. Tumor necrosis factor, soluble form: Secreted By similarity. C-domain 1: Secreted By similarity. C-domain 2: Secreted By similarity. Post-translational modification: The soluble form derives from the membrane form by proteolytic processing. The membrane-bound form is further proteolytically processed by SPPL2A or SPPL2B through regulated intramembrane proteolysis producing TNF intracellular domains (ICD1 and ICD2) released in the cytosol and TNF C-domain 1 and C-domain 2 secreted into the extracellular space By similarity.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 By similarity.O-glycosylated; glycans contain galactose, N-acetylgalactosamine and N-acetylneuraminic acid By similarity. Sequence similarities: Belongs to the tumor necrosis factor family. |
| UniProt Code: | P51435 |
| NCBI GenInfo Identifier: | 290491250 |
| NCBI Gene ID: | 100135630 |
| NCBI Accession: | NP_001166496.1 |
| UniProt Related Accession: | P51435 |
| Molecular Weight: | 25,794 Da |
| NCBI Full Name: | tumor necrosis factor |
| NCBI Official Symbol: | Tnf  |
| NCBI Official Synonym Symbols: | TNFA; TNFSF2Â Â |
| NCBI Protein Information: | tumor necrosis factor; TNF-a; TNF-alpha; cachectin; tumor necrosis factor alpha; tumor necrosis factor ligand superfamily member 2 |
| UniProt Protein Name: | Tumor necrosis factor |
| UniProt Synonym Protein Names: | Cachectin; TNF-alpha; Tumor necrosis factor ligand superfamily member 2; TNF-aCleaved into the following 6 chains:Tumor necrosis factor, membrane form; Alternative name(s):; N-terminal fragment |
| Protein Family: | Tumor necrosis factor |
| UniProt Gene Name: | TNFÂ Â |
| UniProt Entry Name: | TNFA_CAVPO |
| Step | Procedure |
| 1. | Set standard, test sample and control (zero) wells on the pre-coated plate respectively, and then, record their positions. It is recommended to measure each standard and sample in duplicate. Wash plate 2 times before adding standard, sample and control (zero) wells! |
| 2. | Aliquot 0.1ml standard solutions into the standard wells. |
| 3. | Add 0.1 ml of Sample / Standard dilution buffer into the control (zero) well. |
| 4. | Add 0.1 ml of properly diluted sample ( Human serum, plasma, tissue homogenates and other biological fluids.) into test sample wells. |
| 5. | Seal the plate with a cover and incubate at 37°C for 90 min. |
| 6. | Remove the cover and discard the plate content, clap the plate on the absorbent filter papers or other absorbent material. Do NOT let the wells completely dry at any time. Wash plate X2. |
| 7. | Add 0.1 ml of Biotin- detection antibody working solution into the above wells (standard, test sample & zero wells). Add the solution at the bottom of each well without touching the side wall. |
| 8. | Seal the plate with a cover and incubate at 37°C for 60 min. |
| 9. | Remove the cover, and wash plate 3 times with Wash buffer. Let wash buffer rest in wells for 1 min between each wash. |
| 10. | Add 0.1 ml of SABC working solution into each well, cover the plate and incubate at 37°C for 30 min. |
| 11. | Remove the cover and wash plate 5 times with Wash buffer, and each time let the wash buffer stay in the wells for 1-2 min. |
| 12. | Add 90 µL of TMB substrate into each well, cover the plate and incubate at 37°C in dark within 10-20 min. (Note: This incubation time is for reference use only, the optimal time should be determined by end user.) And the shades of blue can be seen in the first 3-4 wells (with most concentrated standard solutions), the other wells show no obvious color. |
| 13. | Add 50 µL of Stop solution into each well and mix thoroughly. The color changes into yellow immediately. |
| 14. | Read the O.D. absorbance at 450 nm in a microplate reader immediately after adding the stop solution. |
When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.
| Sample Type | Protocol |
| Serum: | If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. If serum separator tubes are not being used, allow samples to clotovernight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Removeserum and assay promptly or aliquot and store the samples at-80°C. Avoid multiple freeze-thaw cycles. |
| Plasma: | Collect plasma using EDTA or heparin as an anti-coagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.Note: Over haemolysed samples are not suitable for use with this kit. |
| Urine & Cerebrospinal Fluid: | Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid. |
| Cell Culture Supernatant: | Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately. |
| Cell Lysates: | Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20°C. |
| Tissue Homogenates: | The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenizein 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or-80°C. |
| Tissue Lysates: | Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C. |
| Breast Milk: | Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles. |
