Application of MIT and/or DIT as thyroid cancer markers and kit
A technology of thyroid cancer and markers, which is applied in the field of bioanalysis and medicine, can solve the problems of diagnosis, failure of cancer, and obvious effect of cancer diagnosis, achieving high specificity and effectiveness, low tissue sample consumption, and simple and convenient pretreatment Effect
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Embodiment 1
[0038] Example 1: Determination of Tumor Marker Concentrations in Normal Thyroid Cells and Thyroid Cancer Cells
[0039] 1. Instruments and reagents:
[0040] Ultra-high performance liquid chromatography tandem mass spectrometry (Waters Company), including ACQUITY ultra-high performance liquid phase system, Xevo TQ-XS quadrupole mass spectrometer; high-speed refrigerated centrifuge; analytical balance; nitrogen blowing instrument; vortex shaker.
[0041] Methanol (LC / MS grade), Milli-Q water.
[0042]2. Pretreatment of normal thyroid cells and thyroid cancer cells
[0043] (1) Accurately weigh 0.1-1 mg of normal thyroid cells and thyroid cancer cells to be tested, add 50 μl of methanol internal standard solution, homogenate and break up the tissue samples, mix them and place them in a low temperature environment below 0°C, take them out after 15 minutes ; Greater than 8000g centrifugal force, centrifuge for 5-15 minutes. Add 50 μl of methanol to the precipitate, extract, ce...
Embodiment 2
[0054] Example 2: Determination of Tumor Marker Concentrations in Normal Thyroid Tissue and Thyroid Cancer Tissue
[0055] 1. Instruments and reagents:
[0056] With embodiment 1.
[0057] 2. Pretreatment of normal thyroid tissue and thyroid cancer tissue
[0058] (1) Accurately weigh 0.1-1 mg of the normal thyroid tissue and thyroid cancer tissue samples to be tested, add 50 μl of methanol internal standard solution, homogenize and break the tissue samples, mix them and place them in a low temperature environment below 0°C, take them out after 15 minutes ; Greater than 8000g centrifugal force, centrifuge for 5-15 minutes. Add 50 μl of methanol to the precipitate, extract, centrifuge, and collect the supernatant, repeat twice, and mix the obtained supernatant to obtain a tumor marker extract.
[0059] (2) Derivatization reaction: Take 30 μl of the derivatization reaction buffer solution in a 2 mL brown bottle, add the tumor marker extract extracted in step (1), add 20 μl, 3...
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