As an organic compound, Thiazolyl Blue has various reactive properties. Here are some typical reactions to Thiazolyl Blue:
1. Oxidation reaction: Thiazolyl Blue can be oxidized by a strong oxidant such as hydrogen peroxide (H2O2) to produce a blue oxidation product.
2. Reduction reaction: Thiazolyl Blue can be reduced to blue tetrazole derivatives, such as MTT, under the action of a reducing agent.
3. Acid-base reaction: Thiazolyl Blue is a weakly basic compound that turns yellow under acidic conditions. At the same time, it can decolorize under strong alkaline conditions.
4. Metal complexation reaction: Sulfur, nitrogen and other atoms in Thiazolyl Blue can form complexes with metal ions, such as copper complexes, thus affecting its absorption and fluorescence properties.
5. Free radical reaction: Thiazolyl Blue can be oxidized by free radical oxidants such as superoxide radicals (O2-) to produce blue oxidation products.
In summary, Thiazolyl Blue has a variety of reaction properties, which can be used in its application in the field of biomedicine, such as the detection of cell proliferation and survival.
Thiazolium blue (MTT) method is a method for detecting cell survival and growth, which is widely used in the activity detection of some biologically active factors, large-scale anti-tumor drug screening, cytotoxicity test and tumor radiosensitivity determination, etc. Some specific applications of the application of the MTT method are as follows:
(1) The MTT method can be used to detect the number of viable bacteria in common bacteria such as Streptococcus mutans, Streptococcus sanguis, and Haemophilus with actinomycetes, and has the advantages of rapidity and convenience. When MTT method is used to measure Streptococcus mutans, the best detection wavelength is 510 nm, and the best detection range of bacteria is 1.5×105～1.0×107 CFU·mL-1. When MTT method measures Streptococcus sanguinis, the best detection wavelength is 545 nm, and the best detection range of bacteria is 1.5×105～2.0×107 CFU·mL-1. When the MTT method measures Haemophilus with actinomycetes, the best detection wavelength is 557 nm, and the best detection range of bacteria is 1.0×106～5.0×107 CFU·mL-1.
(2) The cytotoxic effect of lentinan on human prostate cancer cell PC-3, human lung cancer cell A-549, human liver cancer cell HepG2 and human leukemia cell K-562 was determined by MTT method. The results showed that the half inhibitory concentration (IC50) values of lentinan to human prostate cancer cell PC-3, human lung cancer cell A-549, human liver cancer cell HepG2 and human leukemia cell K-562 were (25.8±3.4), (90.0±3.4), respectively. 7.8), (63.3±4.2), (33.1±3.3) μg·mL-1, the growth curve showed that the inhibitory rate of lentinan 100μg·mL-1 to PC-3 cells and HepG2 cells increased with time, showing A certain time-effect relationship.
(3) The activity of testicular cells to be transplanted was measured by MMT method. The Leydig cell suspension prepared by rat testis was incubated with MTT matrix solution, MTT formazan was dissolved with isopropanol, and the absorbance of the supernatant was measured at 563 nm; the reliability of the method was evaluated by in vitro cell culture and testosterone release Sex, compared with trypan blue staining. The results showed that the substrate concentration was 1 g/L, the incubation time was 3 hours, and isopropanol was the optimal condition for the reaction. Cell culture and testosterone assay showed that MTT method was more sensitive and accurate than trypan blue staining method.
Thiazolyl Blue Discovery History:
Thiazolyl Blue was originally developed by F. Mosmann in 1983 to assess the activity of lymphocyte proliferation. At that time, he used MTT (3-(4,5-dimethoxy-2-phenyl)-2,5-diphenyltetrazolium bromide) to test cell growth, but due to poor solubility and stability of MTT Poor performance, Mosmann decided to find a better assay for cell proliferation.
He obtained a new compound by reacting benzothiazoline and benzenesulfonyl chloride. After many experiments and improvements, he finally obtained the structure of Thiazolyl Blue and verified that it can be used as a reliable indicator of cell proliferation and cytotoxicity.
Since Mosmann developed Thiazolyl Blue, this compound has been widely used in the field of biology and has been continuously improved and optimized to suit different experimental needs.
Thiazolyl Blue development prospects:
Thiazolyl Blue has become one of the most widely used compounds in the fields of biology and medicine, and its range of applications is constantly expanding. With the in-depth research on its mechanism of action and the improvement of its structure, Thiazolyl Blue will still have a bright prospect in the future. Here are some possible prospects for Thiazolyl Blue:
1. In the medical field, Thiazolyl Blue can be used to evaluate the toxicity and efficacy of drugs, as well as evaluate the effect of cancer treatment.
2. Thiazolyl Blue can be used as an indicator of cell proliferation and cell activity, and can be used to develop new drugs or evaluate the mechanism of action of known drugs.
3. The structure of Thiazolyl Blue can be improved to better adapt to different experimental needs, such as improving its solubility and stability.
4. Thiazolyl Blue can be used in other fields, such as environmental monitoring, chemical analysis, etc.
In short, with the continuous development of biology and medicine, Thiazolyl Blue, as an important experimental compound, still has a bright future.