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Human V-set domain-containing T-cell activation inhibitor 1 (VTCN1) ELISA Kit (HUEB1063)

SKU:
HUEB1063
Product Type:
ELISA Kit
Size:
96 Assays
Uniprot:
Q7Z7D3
Range:
0.78-50 ng/mL
ELISA Type:
Sandwich
Synonyms:
VTCN1, V-set domain-containing T-cell activation inhibitor 1, T-cell costimulatory molecule B7x, Protein B7S1, B75, Immune costimulatory protein B7-H4
Reactivity:
Human
$779
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Description

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Human V-set domain-containing T-cell activation inhibitor 1 (VTCN1) ELISA Kit

The Human V-set Domain Containing T-cell Activation Inhibitor 1 (VTCN1) ELISA Kit is a valuable tool for the precise measurement of VTCN1 levels in human samples, including serum, plasma, and cell culture supernatants. With its exceptional sensitivity and specificity, this kit delivers accurate and reproducible results, perfect for various research applications.VTCN1, also known as B7-H4, is a crucial immune checkpoint molecule that plays a key role in modulating T-cell activation and immune response.

Dysregulation of VTCN1 expression has been implicated in various diseases, including cancer, autoimmune disorders, and inflammatory conditions. Therefore, monitoring VTCN1 levels using this ELISA kit could provide valuable insights into disease pathogenesis and potential therapeutic targets.

Product Name:Human V-set domain-containing T-cell activation inhibitor 1 (VTCN1) ELISA Kit
SKU:HUEB1063
Size:96T
Target:Human V-set domain-containing T-cell activation inhibitor 1 (VTCN1)
Synonyms:B7 homolog 4, B7h.5, Immune costimulatory protein B7-H4, Protein B7S1, T-cell costimulatory molecule B7x, B7-H4, UNQ659/PRO1291, B7H4
Assay Type:Sandwich
Detection Method:ELISA
Reactivity:Human
Detection Range:0.78-50ng/mL
Sensitivity:0.38ng/mL
Intra CV:5.4%
Inter CV:7.3%
Linearity:
Sample1:21:41:81:16
Serum(N=5)87-97%87-98%111-111%90-100%
EDTA Plasma(N=5)115-127%100-109%108-118%110-120%
Heparin Plasma(N=5)91-100%102-112%80-90%86-98%
Recovery:
Sample TypeAverage(%)Recovery Range(%)
Serum8580-91
Plasma8781-93
Function:Negatively regulates T-cell-mediated immune response by inhibiting T-cell activation, proliferation, cytokine production and development of cytotoxicity. When expressed on the cell surface of tumor macrophages, plays an important role, together with regulatory T-cells (Treg), in the suppression of tumor-associated antigen-specific T-cell immunity. Involved in promoting epithelial cell transformation.
Uniprot:Q7Z7D3
Sample Type:Serum, plasma, tissue homogenates, cell culture supernates and other biological fluids
Specificity:Natural and recombinant human V-set domain-containing T-cell activation inhibitor 1
Research Area:Cancer
Subcellular Location:Cell membrane Single-pass type I membrane protein Expressed at the cell surface. A soluble form has also been detected.
Storage:Please see kit components below for exact storage details
Note:For research use only
UniProt Protein Function:VTCN1: Negatively regulates T-cell-mediated immune response by inhibiting T-cell activation, proliferation, cytokine production and development of cytotoxicity. When expressed on the cell surface of tumor macrophages, plays an important role, together with regulatory T-cells (Treg), in the suppression of tumor- associated antigen-specific T-cell immunity. Involved in promoting epithelial cell transformation. Belongs to the immunoglobulin superfamily. BTN/MOG family. 3 isoforms of the human protein are produced by alternative splicing.
UniProt Protein Details:

Protein type:Membrane protein, integral

Chromosomal Location of Human Ortholog: 1p13.1-p12

NCBI Summary:This gene encodes a protein belonging to the B7 costimulatory protein family. Proteins in this family are present on the surface of antigen-presenting cells and interact with ligand bound to receptors on the surface of T cells. Studies have shown that high levels of the encoded protein has been correlated with tumor progression. A pseudogene of this gene is located on chromosome 20. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2011]
UniProt Code:Q7Z7D3
NCBI GenInfo Identifier:74759262
NCBI Gene ID:79679
NCBI Accession:Q7Z7D3.1
UniProt Secondary Accession:Q7Z7D3,Q0GN76, Q45VN0, Q5WPZ3, Q6P097, Q9H6B2,
UniProt Related Accession:Q7Z7D3
Molecular Weight:
NCBI Full Name:V-set domain-containing T-cell activation inhibitor 1
NCBI Synonym Full Names:V-set domain containing T-cell activation inhibitor 1
NCBI Official Symbol:VTCN1
NCBI Official Synonym Symbols:B7X; B7H4; B7S1; B7-H4; B7h.5; VCTN1; PRO1291
NCBI Protein Information:V-set domain-containing T-cell activation inhibitor 1
UniProt Protein Name:V-set domain-containing T-cell activation inhibitor 1
UniProt Synonym Protein Names:B7 homolog 4; B7-H4; B7h.5; Immune costimulatory protein B7-H4; Protein B7S1; T-cell costimulatory molecule B7x
UniProt Gene Name:VTCN1
Component Quantity (96 Assays) Storage
ELISA Microplate (Dismountable) 8×12 strips -20°C
Lyophilized Standard 2 -20°C
Sample Diluent 20ml -20°C
Assay Diluent A 10mL -20°C
Assay Diluent B 10mL -20°C
Detection Reagent A 120µL -20°C
Detection Reagent B 120µL -20°C
Wash Buffer 30mL 4°C
Substrate 10mL 4°C
Stop Solution 10mL 4°C
Plate Sealer 5 -

Other materials and equipment required:

  • Microplate reader with 450 nm wavelength filter
  • Multichannel Pipette, Pipette, microcentrifuge tubes and disposable pipette tips
  • Incubator
  • Deionized or distilled water
  • Absorbent paper
  • Buffer resevoir

*Note: The below protocol is a sample protocol. Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.

Allow all reagents to reach room temperature (Please do not dissolve the reagents at 37°C directly). All the reagents should be mixed thoroughly by gently swirling before pipetting. Avoid foaming. Keep appropriate numbers of strips for 1 experiment and remove extra strips from microtiter plate. Removed strips should be resealed and stored at -20°C until the kits expiry date. Prepare all reagents, working standards and samples as directed in the previous sections. Please predict the concentration before assaying. If values for these are not within the range of the standard curve, users must determine the optimal sample dilutions for their experiments. We recommend running all samples in duplicate.

Step
1. Add Sample: Add 100µL of Standard, Blank, or Sample per well. The blank well is added with Sample diluent. Solutions are added to the bottom of micro ELISA plate well, avoid inside wall touching and foaming as possible. Mix it gently. Cover the plate with sealer we provided. Incubate for 120 minutes at 37°C.
2. Remove the liquid from each well, don't wash. Add 100µL of Detection Reagent A working solution to each well. Cover with the Plate sealer. Gently tap the plate to ensure thorough mixing. Incubate for 1 hour at 37°C. Note: if Detection Reagent A appears cloudy warm to room temperature until solution is uniform.
3. Aspirate each well and wash, repeating the process three times. Wash by filling each well with Wash Buffer (approximately 400µL) (a squirt bottle, multi-channel pipette,manifold dispenser or automated washer are needed). Complete removal of liquid at each step is essential. After the last wash, completely remove remaining Wash Buffer by aspirating or decanting. Invert the plate and pat it against thick clean absorbent paper.
4. Add 100µL of Detection Reagent B working solution to each well. Cover with the Plate sealer. Incubate for 60 minutes at 37°C.
5. Repeat the wash process for five times as conducted in step 3.
6. Add 90µL of Substrate Solution to each well. Cover with a new Plate sealer and incubate for 10-20 minutes at 37°C. Protect the plate from light. The reaction time can be shortened or extended according to the actual color change, but this should not exceed more than 30 minutes. When apparent gradient appears in standard wells, user should terminatethe reaction.
7. Add 50µL of Stop Solution to each well. If color change does not appear uniform, gently tap the plate to ensure thorough mixing.
8. Determine the optical density (OD value) of each well at once, using a micro-plate reader set to 450 nm. User should open the micro-plate reader in advance, preheat the instrument, and set the testing parameters.
9. After experiment, store all reagents according to the specified storage temperature respectively until their expiry.

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 clot overnight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Remove serum 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 anticoagulant. 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 & homogenize in 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.
ELISA
Human V-set domain-containing T-cell activation inhibitor 1 / VTCN1 ELISA Kit

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