Human B7-H3 Quantikine ELISA Kit | hB7-H3 QKit
掲載日情報：2016/08/18 現在Webページ番号：111023
R&D Systems製のHuman B7-H3を測定するELISAキットです。
※本製品は研究用です。研究用以外には使用できません。
[在庫・価格 ：2025年04月26日 00時00分現在]
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[在庫・価格 ：2025年04月26日 00時00分現在]
Human B7-H3 Quantikine ELISA Kit
文献数： 2
- 商品コード：DB7H30
- メーカー：RSD
- 包装：1kit
- 価格：¥116,000
- 在庫：無(未発注)
- 納期：10日程度 ※※ 表示されている納期は弊社に在庫がなく、取り寄せた場合の目安納期となります。
- 法規制等：
| 説明文 | 測定範囲：0.781-50 ng/mL，感度：0.274 ng/mL，測定試料：Serum, Plasma, Cell Culture Supernatant, Urine，種交差性：Human，検出方法：呈色，測定波長：450 nm，アッセイ法：Solid Phase Sandwich ELISA，アッセイ数：96 well，別売品コントロール：#QC47，測定時間：4.5 hours，測定因子：B7-H3 別名：B7H3 Genbank No： 80381 |
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| 法規制等 | |||
| 保存条件 | 4℃ | 法規備考 | |
| 掲載カタログ |
ニュース2022年11月15日号 p.6
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| 製品記事 | Human B7-H3 Quantikine ELISA Kit Immune Checkpoint Protein ELISA Kit ELISA Kit製品に関するFAQ（R&D Systems） |
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| 関連記事 | R&D Systems Quantikine ELISA Kit／DuoSet Kit特集 Quantikine ELISA Kit |
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Product Details
- Assay Type
- Solid Phase Sandwich ELISA
- Format
- 96-well strip plate
- Assay Length
- 4.5 hours
- Sample Type & Volume Required Per Well
- Cell Culture Supernates (50 µL), Serum (50 µL), EDTA Plasma (50 µL), Heparin Plasma (50 µL), Urine (50 µL)
- Sensitivity
- 0.274 ng/mL
- Assay Range
- 0.781 - 50 ng/mL (Serum, Heparin Plasma, Cell Culture Supernates, EDTA Plasma, Urine)
- Specificity
- Natural and recombinant human B7-H3
- Interference
- No significant interference observed with available related molecules.
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Product Summary
The Quantikine Human B7-H3 Immunoassay is a 4.5 hour solid-phase ELISA designed to measure human B7-H3 in cell culture supernates, serum, plasma, and urine. It contains NS0-expressed recombinant human B7-H3 and has been shown to accurately quantitate the recombinant factor. Results obtained using natural human B7-H3 showed linear curves that were parallel to the standard curves obtained using the Quantikine kit standards. These results indicate that this kit can be used to determine relative mass values for naturally occurring human B7-H3.
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Precision
Intra-Assay Precision (Precision within an assay)
Three samples of known concentration were tested on one plate to assess intra-assay precision.
Inter-Assay Precision (Precision between assays)
Three samples of known concentration were tested in separate assays to assess inter-assay precision.
Cell Culture Supernates, Serum, Heparin Plasma, Urine
| Intra-Assay Precision | Inter-Assay Precision | |||||
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 20 | 20 | 20 | 20 | 20 | 20 |
| Mean | 5.89 | 19 | 37.5 | 5.88 | 17.6 | 35.1 |
| Standard Deviation | 0.2 | 0.6 | 0.9 | 0.3 | 0.6 | 1.7 |
| CV% | 3.4 | 3.3 | 2.5 | 5.1 | 3.5 | 5 |
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Recovery
The recovery of B7-H3 spiked to levels throughout the range of the assay in various matrices was evaluated.
| Sample Type | Average % Recovery | Range % |
| Cell Culture Media (n=4) | 105 | 99-112 |
| Serum (n=4) | 103 | 94-117 |
| EDTA Plasma (n=4) | 104 | 91-115 |
| Heparin Plasma (n=4) | 102 | 93-114 |
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Linearity
To assess the linearity of the assay, samples containing and/or spiked with high concentrations of B7-H3 were serially diluted with Calibrator Diluent to produce samples with values within the dynamic range of the assay.
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Additional Infomation
- Molecule Information
- B7-H3
- Aliases
- CD276
- Entrez Gene IDs
- 80381 (Human); 102657 (Mouse)
- Background
- B7-H3
- Human B7-H3 was originally identified as a 316 amino acid (aa) type I membrane precursor protein with a putative 28 aa signal peptide, a 217 aa extracellular region containing one V-like and one C-like Ig domain, a transmembrane region, and a 45 aa cytoplasmic domain. Subsequently, a second dominantly expressed form of human B7-H3, containing a splice variation that duplicates the V-like and C-like Ig domains, was found. The 534 aa splice variant of B7-H3 has been referred to as B7-H3b, 4Ig-B7-H3, and B7-H3VCVC. RTPCR transcripts for both B7-H3 and 4Ig-B7-H3 have been found in all tissues except peripheral blood leukocytes. Southern blot analysis indicates that the 4Ig-B7-H3 isoform of B7-H3is the predominate isoform expressed in human tissues.In mouse, only a single form of B7-H3 containing one V-like and one C-like Ig domain was detected. Mouse and human B7-H3 share 87% aa sequence identity. B7-H3 has been shown to be expressed at very high levels in immature dendritic cells, at moderate levels on mature dendritic cells, LPS stimulated immature dendritic cells and LPS stimulated monocytes, and at low levels on resting monocytes. B7-H3 binds to activated T cells via an as yet unidentified receptor.
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Citations
Citations of cell biology reagents in peer reviewed literature can be used as a direct measure of product quality. They can also provide crucial insightinto their use under specialized or unique experimental conditions. Because of the importance published citations have to researchers, R&D Systems personnelmanually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but alsoprovides information about sample types, species, and experimental conditions.
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