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Human MHCG/HLA-G(Major Histocompatibility Complex Class Ⅰ G) ELISA Kit

Citations(6)Uniprot : P17693

Cat.No.:E-EL-H1663
Reactivity: Human

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Product Details

Properties

Assay type	Sandwich-ELISA
Format	96T/48T
Assay time	3.5h
Detection range	0.63-40 ng/mL
Sensitivity	0.38 ng/mL
Sample type &Sample volume	serum, plasma and other biological fluids; 100μL
Specificity	This kit recognizes Human MHCG/HLA-G in samples. No significant cross-reactivity or interference between Human MHCG/HLA-G and analogues was observed.
Reproducibility	Both intra-CV and inter-CV are < 10%.
Application	This ELISA kit applies to the in vitro quantitative determination of Human MHCG/HLA-G concentrations in serum, plasma and other biological fluids.

Test Principle

This ELISA kit uses the Sandwich-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to Human MHCG/HLA-G. Standards or samples are added to the micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human MHCG/HLA-G and Avidin-Horseradish Peroxidase (HRP) conjugate are added successively to each micro plate well and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain Human MHCG/HLA-G, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by the addition of stop solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The OD value is proportional to the concentration of Human MHCG/HLA-G. You can calculate the concentration of Human MHCG/HLA-G in the samples by comparing the OD of the samples to the standard curve.

Kit components & Storage

An unopened kit can be stored at 2-8℃ for 1 month. If the kit is not supposed to be used within 1 month, store the components separately according to the following conditions once the kit is received.

Item	Specifications	Storage
Micro ELISA Plate(Dismountable)	96T: 8 wells ×12 strips 48T: 8 wells ×6 strips	-20℃, 6 months
Reference Standard	96T: 2 vials 48T: 1 vial
Concentrated Biotinylated Detection Ab (100×)	96T: 1 vial, 120 μL 48T: 1 vial, 60 μL
Concentrated HRP Conjugate (100×)	96T: 1 vial, 120 μL 48T: 1 vial, 60 μL	-20℃(Protect from light), 6 months
Reference Standard & Sample Diluent	1 vial, 20 mL	2-8°C, 6 months
Biotinylated Detection Ab Diluent	1 vial, 14 mL
HRP Conjugate Diluent	1 vial, 14 mL
Concentrated Wash Buffer (25×)	1 vial, 30 mL
Substrate Reagent	1 vial, 10 mL	2-8℃(Protect from light)
Stop Solution	1 vial, 10 mL	2-8°C
Plate Sealer	5 pieces
Manual	1 copy
Certificate of Analysis	1 copy

Technical Data

Precision

Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level Human MHCG/HLA-G were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Human MHCG/HLA-G were tested on 3 different plates, 20 replicates in each plate.

	Intra-assay Precision			Inter-assay Precision
Sample	1	2	3	1	2	3
n	20	20	20	20	20	20
Mean (ng/mL)	1.86	5.71	15.28	1.85	5.90	15.91
Standard deviation	0.10	0.27	0.47	0.12	0.33	0.48
CV (%)	5.38	4.73	3.08	6.49	5.59	3.02

Recovery

The recovery of Human MHCG/HLA-G spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.

Sample Type	Range (%)	Average Recovery (%)
Serum(n=8)	89-102	94
EDTA plasma (n=8)	86-100	92
Cell culture media (n=8)	93-109	100

Linearity

Samples were spiked with high concentrations of Human MHCG/HLA-G and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.

Target Information

Database Links	SwissProt: P17693
Synonyms	HLA-G5, MHC-G
Research Area	Cancer, Immunology

Assay Procedures

	1. Add 100μL standard or sample to the wells. Incubate for 90 min at 37°C
	2. Discard the liquid, immediately add 100μL Biotinylated Detection Ab working solution to each well. Incubate for 60 min at 37°C
	3. Aspirate and wash the plate for 3 times
	4. Add 100μL HRP conjugate working solution. Incubate for 30 min at 37°C. Aspirate and wash the plate for 5 times
	5. Add 90μL Substrate Reagent. Incubate for 15 min at 37°C
	6. Add 50μL Stop Solution
	7. Read the plate at 450nm immediately. Calculation of the results

Citations

Cellular & Molecular Immunology (2022) IF: 11.53
Downregulated cytotoxic CD8+ T-cell identifies with the NKG2A-soluble HLA-E axis as a predictive biomarker and potential therapeutic target in keloids

DOI: 10.1038/s41423-021-00834-1

PMID: 35039632
Sample: serum
JOURNAL OF REPRODUCTIVE IMMUNOLOGY (2020) IF: 4.018
Understanding HLA-G driven journey from HPV infection to cancer cervix: Adding missing pieces to the jigsaw puzzle

DOI: 10.1016/j.jri.2020.103205

PMID: 33099242
Sample: Plasma
Vaccines (2020) IF: 4.086
The Potential of Soluble Human Leukocyte Antigen Molecules for Early Cancer Detection and Therapeutic Vaccine Design

DOI: 10.3390/vaccines8040775

PMID: 33353014
Sample: Serum
HYPERTENSION IN PREGNANCY (2017) IF: 1.099
Circulating fetal and total cell-free DNA, and sHLA-G in black South African women with gestational hypertension and pre-eclampsia

DOI: 10.1080/10641955.2017.1385794

Sample: Plasma
Egyptian Journal of Medical Human Genetics (2020)
Susceptibility role of soluble HLA-G and HLA-G 14-bp insertion/deletion polymorphism in inflammatory bowel disease

DOI: 10.1186/s43042-020-00104-1

Sample: serum
Anatomy & Cell Biology (2017)
Evaluation of sHLA-G levels in serum of patients with prostate cancer identify as a potential of tumor marker

DOI: 10.5115/acb.2017.50.1.69

Sample: serum

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