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Alpha-fetoprotein variant AFP-L3 quantitative detection kit and use thereof

An AFP-L3, quantitative detection technology, used in biological testing, measuring devices, material inspection products, etc., to achieve the effect of simple application, strong stability, and improved stability

Active Publication Date: 2015-10-07
赛特斯(海南)生物医学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN200610112962 also discloses a quantitative kit for the determination of AFP-L

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  • Alpha-fetoprotein variant AFP-L3 quantitative detection kit and use thereof
  • Alpha-fetoprotein variant AFP-L3 quantitative detection kit and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation of embodiment 1 kit

[0033] The kit of the present invention consists of: AFP-L3 negative and 1 bottle of positive control; AFP monoclonal antibody coated plate (96 holes); 1 bottle of AFP monoclonal antibody solution labeled with horseradish peroxidase (HRP), 6ml / 1 bottle of lentil agglutinin (LCA) solution; 1 bottle of control buffer; 1 bottle of AFP standard, 1 bottle of substrate solution and 1 bottle of chromogenic solution, each 5ml / bottle; 1 bottle of reaction termination solution, 5ml / bottle; Wash buffer (20X concentrated) 1 bottle, 30ml / bottle.

[0034] The enzyme label plate adopts imported or domestically produced 12×8 detachable strips. Dilute the AFP monoclonal antibody to 20 μg / ml with 0.05mol / L carbonate buffer, add to each well of the enzyme labeling plate, 100 μl per well, absorb overnight, wash the plate with washing buffer, and then block with the blocking buffer Spin it overnight, dry it in the air, and obtain the monoclonal antib...

Embodiment 2

[0044] Example 2 Sensitivity investigation of the kit

[0045] Prepare PBS buffer solution with different concentrations of AFP-L3 standard substance respectively, the concentrations are respectively 1ng / ml, 5ng / ml, 10ng / ml, 15ng / ml, 20ng / ml, and the kit prepared in Example 1 is used for detection, to control The buffer solution is used as a blank control, and the specific detection method is as follows:

[0046] Washing buffer preparation: dilute the concentrated washing buffer provided in the kit with distilled water 20 times.

[0047] a) Antigen-antibody reaction: Add 50 μl of AFP-L3 standard solution and control buffer to the microwells of the antibody-coated plate provided in the kit, respectively, and use a marker pen to mark them into series 1 and 2. Incubate in a water bath at 37°C for 50 minutes. Wash the plate 5 times.

[0048] b) A solution containing lectin is added to the 1st series of sample wells, and a control buffer solution not containing lectin is added t...

Embodiment 3

[0058] Example 3 Stability investigation of the kit

[0059] After the kit prepared in Example 1 was placed at 20° C. for 6 months and 12 months, respectively, the sensitivity of the kit was measured according to the method in Example 2.

[0060] In this embodiment, the comparison ratio is set as follows:

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Abstract

The invention belongs to the field of biological detection and concretely relates to an alpha-fetoprotein variant AFP-L3 quantitative detection kit and a use thereof. The kit comprises an alpha-fetoprotein (AFP) standard substance, an agglutinin solution, a contrast liquid, a coated enzyme label plate, a horseradish peroxidase (HRP)-labeled AFP monoclonal antibody solution and an auxiliary reagent. Through matching of the reagent components of the kit, composition is optimized so that kit stability is greatly improved and sensitivity is improved. Through the standard substance of the kit, alpha-fetoprotein and alpha-fetoprotein variant content of the blood sample specimen is directly and quantificationally calculated. The method is simple. The kit has strong stability.

Description

technical field [0001] The invention belongs to the field of biological detection, and in particular relates to a kit for quantitative detection of alpha-fetoprotein heterogeneity AFP-L3 and its application. Background technique [0002] Worldwide, hepatocellular carcinoma is the sixth most common cancer and the third most common cause of cancer-related death. Risk factors include chronic hepatitis and cirrhosis of the liver caused by the hepatitis B virus and hepatitis C virus. The clinical efficiency of screening and screening depends on early diagnosis for effective treatment. [0003] Alpha-fetoprotein heterogeneity AFP-L3 is alpha-fetoprotein with abnormal glycosylation. AFP-L3 is unique to liver cancer cells. This indicator has higher specificity than common alpha-fetoprotein, with a specificity of more than 95%; More importantly, this indicator has important clinical significance for the diagnosis of subclinical liver cancer; domestic clinical studies believe that t...

Claims

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Application Information

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IPC IPC(8): G01N33/68
CPCG01N33/57438G01N33/57484G01N33/6893
Inventor 陈立国孙丽华
Owner 赛特斯(海南)生物医学有限公司