Antibody chip reagent kit for detecting hepatoma marker
A technology of antibody chips and markers, applied in the biological field, can solve the problems of low tumor sensitivity and specificity, and achieve the effects of less specimen consumption, saving sample volume, consistency and reliability time
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[0040] Example 1: Preparation of the kit.
[0041] 1. Screening and source of antibodies
[0042] Take the AFP antibody screening as an example, use this antibody to detect 6 clinical samples (the detection value of the clinical sample is known and measured by electrochemiluminescence method), and compare the detection value of the clinical sample with the detection value of the kit as a scatter diagram The correlation is as follows: the results of electrochemiluminescence detection are basically equivalent to those of this kit.
[0043] Take the AFP antibody as an example, use this antibody to detect 6 clinical samples (the detection value of the clinical sample is known, measured by electrochemiluminescence method, and the light absorption peak is converted into a value by software), and the clinical sample detection value is compared with this reagent The detection value of the box is compared as a scatter diagram (see figure 1 ), the correlation is as follows: the results of ele...
Example Embodiment
[0079] Example 2: The kit of the present invention is used in an experiment for detecting liver cancer tumor markers.
[0080] 1. Complete drying of the slide chip
[0081] Take out the antibody chip from the liver cancer marker detection antibody chip kit of the present invention.
[0082] The antibody chip frame can have two kinds. If one antibody spot has 4 holes (ie 4 repeats), a 2×8 chip frame can be used; if an antibody spot has 2 holes, a 4×16 chip frame can be used.
[0083] After equilibrating the glass slide chip at room temperature for 20-30 minutes, open the packaging bag, uncover the sealing strip, and then place the chip in a vacuum desiccator or dry at room temperature for 1-2 hours.
[0084] 2. Chip operation process
[0085] Add 50-100μl of sample to each well, and the amount of different samples is different: plasma and serum are diluted 1:1 with sample diluent before use; cell supernatant can be used as original solution; cell or tissue lysate is determined by protein ...
Example Embodiment
[0104] Example 3: The detection sensitivity of the antibody used in the kit of the present invention and the cross-reaction result of the antibody
[0105] A detection sensitivity of the antibody used in the kit of the present invention
[0106] Refer to Example 2 for specific operations. The lowest detection limit and linear range of the kit were obtained by using each antigen in a gradient dilution.
[0107] Table 2: Detection sensitivity of 8 antibodies in the kit of the present invention
[0108]
[0109] 2. The cross-reaction result of the antibody used in the kit of the present invention
[0110] Refer to Example 2 for specific operations. The detection antibodies are anti-AFP antibody, anti-CK19 antibody, anti-VEGF antibody, anti-DCP antibody, anti-SCCA antibody and a mixture of these five antibodies. The cross-reactivity test results of antibody pairs are as follows Picture 9 Shown.
[0111] It can be seen from the results that each antibody pair can specifically recognize its ...
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