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Myo detection kit based on bimolecular fluorescence complementation technology and preparation and use method thereof

A detection kit, bimolecular technology, applied in biological testing, fluorescence/phosphorescence, analytical materials, etc., can solve problems such as reducing detection repeatability

Inactive Publication Date: 2018-07-10
NANJING TZONE BIOLOGICAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The CMIA method is improved from the ELISA method. Compared with the ELISA method, it has the characteristics of simple operation and fast detection speed. However, the CMIA method is a heterogeneous reaction, and the operation process needs to be cleaned, which reduces the repeatability of the detection.

Method used

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  • Myo detection kit based on bimolecular fluorescence complementation technology and preparation and use method thereof
  • Myo detection kit based on bimolecular fluorescence complementation technology and preparation and use method thereof
  • Myo detection kit based on bimolecular fluorescence complementation technology and preparation and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The anti-Myo antibody is coupled to the N-terminal fragment of fluorescent protein, taking the yellow fluorescent protein (YFP) 1-154 amino acid fragment YFPN as an example, the specific implementation process is as follows:

[0027] 1) Add 0.1mg of YFPN protein into a centrifuge tube, and prepare with 0.05mol / L pH9.5 carbonate buffer (CB) to dilute the YFPN protein to 1mg / ml.

[0028] 2) Add glutaraldehyde at a final concentration of 1.25% in a fume hood.

[0029] 3) Reaction in a water bath at 37°C for 2 hours.

[0030] 4) Dialyze with desalting column Sephadex G-25 or 0.05mol / L pH9.5 CB to remove excess glutaraldehyde.

[0031] 5) Take 0.1 mg anti-Myo antibody, prepare 1 mg / ml antibody with 0.05 mol / L pH9.5 CB, and mix activated YFPN protein and antibody.

[0032] 6) React overnight at 4°C.

[0033] 7) Blocking: add 50 μl of 0.2 mol / L lysine solution, and block for 2 hours at room temperature to block residual aldehyde groups and terminate the reaction.

[0034] ...

Embodiment 2

[0037] The anti-Myo antibody is coupled to the fluorescent protein C-terminal fragment, taking the yellow fluorescent protein (YFP) 155-238 amino acid fragment YFPC as an example, the specific implementation process is as follows:

[0038] 1) Add 0.1mg of YFPC protein into a centrifuge tube and prepare with 0.05mol / L pH9.5 carbonate buffer (CB) to dilute the YFPC protein to 1mg / ml.

[0039] 2) Add glutaraldehyde at a final concentration of 1.25% in a fume hood.

[0040] 3) Reaction in a water bath at 37°C for 2 hours.

[0041] 4) Dialyze with desalting column Sephadex G-25 or 0.05mol / L pH9.5 CB to remove excess glutaraldehyde.

[0042] 5) Take 0.1 mg anti-Myo antibody, prepare 1 mg / ml antibody with 0.05 mol / L pH9.5 CB, and mix activated YFPC protein and antibody.

[0043] 6) React overnight at 4°C.

[0044] 7) Blocking: add 50 μl of 0.2 mol / L lysine solution, and block for 2 hours at room temperature to block residual aldehyde groups and terminate the reaction.

[0045] 8)...

Embodiment 3

[0048] The main components of the kit:

[0049] 1) N-terminal fragment of fluorescent protein coupled with anti-Myo antibody;

[0050] 2) Anti-Myo antibody-coupled fluorescent protein C-terminal fragment.

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Abstract

The invention provides a Myo detection kit based on a bimolecular fluorescence complementation technology and a preparation and use method thereof. The kit includes a fluorescent protein N-end segmentresistant to Myo antibody coupling and a fluorescent protein C-end segment resistant to Myo antibody coupling. The invention also discloses the preparation method of the Myo diagnosis kit based on the bimolecular fluorescence complementation technology. The preparation method includes preparation of the fluorescent protein N-end segment resistant to Myo antibody coupling and preparation of the fluorescent protein C-end segment resistant to Myo antibody coupling. Finally, the invention also discloses the use method of the kit. The kit has the advantages of being excellent in specificity, easyto operate, high in detection speed, wide in linear range, free of cleaning, high in accuracy and the like and can provide convenience for clinical detection and usage; the kit is applied to monitoring of acute myocardial infarction, can increase the accuracy rate of diagnosing acute myocardial infarction and has a considerable market value.

Description

technical field [0001] The invention relates to a bimolecular fluorescence complementary technology used for in vitro immunodiagnosis to detect the content of Myo in a human body, belonging to the field of disease diagnosis and detection. Background technique [0002] Acute myocardial infarction (AMI) is one of the diseases with high morbidity and mortality in the world. According to recent data from the American Heart Association, there were 7.2 million AMI patients in the United States in 2003. But at the same time, AMI is one of the diseases with a high misdiagnosis rate. Some patients who do suffer from AMI have not been properly treated, resulting in a high mortality rate; while other non-AMI patients have received unnecessary treatment, causing unnecessary cost. The World Health Organization recommends that AMI can be diagnosed if two of the three indicators of typical chest pain, ECG changes and abnormal myocardial enzymes are met. However, many AMI patients do not...

Claims

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Application Information

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IPC IPC(8): G01N33/68G01N21/64
CPCG01N21/6486G01N33/68G01N2800/324
Inventor 徐林
Owner NANJING TZONE BIOLOGICAL SCI & TECH