Application of taurolidine in preparing anti-HPV (human papilloma Virus) medicineTechnical Field
The invention relates to the technical field of medicines, in particular to application of taurolidine in preparing an anti-HPV (human papilloma Virus) medicine.
Background
Human Papilloma Virus (HPV) is a papilloma vacuolatum virus A genus belonging to the papovaviridae family, is a spherical DNA virus, and can cause squamous epithelial proliferation of human skin mucosa. It is manifested by symptoms such as common wart and genital wart (condyloma acuminatum). With the rapid increase of the incidence rate of condyloma acuminatum in venereal diseases and the increase of cervical cancer, anal cancer and the like, HPV infection is attracting more and more attention.
Existing approaches to disease treatment for HPV infection mainly include: physical therapy, pharmacotherapy, immunotherapy, therapeutic vaccines. The physical therapy mainly adopts laser, microwave, freezing, excision, photodynamic therapy and the like to remove tumor bodies and subclinical infection which are visible to the naked eye. The main medicines used for the drug therapy are 0.5 percent of fogdalin tincture, 5 percent of imiquimod, 50 percent of trichloroacetic acid, fluorouracil ointment and the like. Immunotherapy uses interferon, interleukin, thymosin, transfer factor, BCG, isotretinoin, autovaccine, etc. with the purpose of reducing recurrence and accelerating the removal of lesions. The vaccine only has preventive quadrivalent vaccine which can prevent HPV6, 11, 16 and 18 virus type infection at present, and can reduce most of cervical cancer because the infection type of most of cervical cancer is 16 and 18, but has no effect on preventing vaccine for infected people.
Chinese patents CN101274921A and CN101285813A disclose that Taurolidine (Taurolidine) has a chemical name: 4,4 ' -methylenebis- (tetrahydro-2H-1, 2, 4-thiadiazine) -1,1,1 ', 1 ' tetraoxide with the molecular formula C7H16N4O4S2The molecular weight is: 284.348, is white or white-like crystalline powder, and has the following chemical formula:
can be synthesized by the following synthetic route:
taurolidine is a broad spectrum antibacterial, antifungal and antiendotoxic drug. Is mainly used for preventing the junior symptoms of patients suffering from various blood stream infections related to the catheter. It can also be used for treating otitis, pleuropneumonia, osteomyelitis, dermatitis, periodontitis, gingivitis, acne, and ulcer. But have not been found to be useful against human papillomaviruses.
Disclosure of Invention
The invention aims to provide a new application of taurolidine, namely the application of taurolidine in inhibiting HPV virus or preparing anti-HPV virus medicaments.
It is preferable that: application of taurolidine in preparing medicaments for treating cervical epithelial cell neoplasia, vaginitis, cervical erosion, cervical polyp, cervical cancer or condyloma acuminatum caused by HPV virus infection.
In the technical scheme, the taurolidine can be prepared into injection, infusion solution, tablets, capsules and other dosage forms, and the infusion solution is preferred.
The invention has the beneficial effects that:
the invention discovers the new application of the taurolidine for the first time, namely the application of the taurolidine in inhibiting HPV virus or preparing anti-HPV virus medicaments. The safety of the taurolidine to human bodies is detected by clinical practice, the invention discovers the obvious drug effect of the taurolidine to HPV virus, provides powerful theoretical basis and practical basis for resisting the HPV virus, and has development value and popularization significance. The invention detects the inhibition effect of the taurolidine on the HPV virus at the cellular level, and provides a new way for treating diseases caused by the HPV virus.
Detailed Description
To better understand the essence of the present invention, the following was made by examining the inhibitory effect of taurolidine on HPV virus at the cellular level.
Firstly, experimental materials:
1.1 cells of human oral mucosal epithelial cells, derived from the virology research laboratory of the military veterinary institute;
1.2 strain Human Papilloma Virus (HPV), derived from the virology research laboratory of the military veterinary institute;
1.3 reagent elitec primary epithelial cell culture system PriMed-elitec-001, 0.25% trypsin, FBS, PBS (FH ═ 7.0);
1.4 instrument consumable pipettor and supporting suction head, 1.5mL centrifuging tube, ice box, ice machine, biological safety cabinet, carbon dioxide incubator.
II, an experimental method:
2.1 the cell culture recovers the epithelial cells of the oral mucosa of the human body, continuously transmits the cells for three generations, and is used for experimental research after the cells grow well;
2.2 Virus culture the preserved virus liquid is placed on ice to be slowly melted and then inoculated to a monolayer of human oral mucosa epithelial cells (no more than 24 hours), the culture is continued for 72 to 96 hours, and the virus liquid is harvested according to the cytopathic state. And determining the virus content as TCID50The unit of calculation is/100. mu.L.
2.3 taurolidine inhibition
Drugs are mixed with virus and simultaneously inoculated into cells: digesting well-growing human oral mucosa epithelial cells with pancreatin, calculating cell content, inoculating to 96-well plate with 10 per well5Individual cells, seeded within 12 hours and in monolayer state for study of drug action. Inoculation virus content of 200 TCIDs50HPV and taurolidine are mixed and immediately inoculated into a paved 6-well plate, and the 2 percent taurolidine solution and the drug dosage are 50 mu L, 25 mu L, 12.5 mu L, 7.5 mu L and 3.75 mu L. Setting blank cell control and taurolidine cytotoxicity control, and repeating for 3 times;
placing the inoculated cell plate at 37 ℃ and CO2In the incubator, the culture was continued and the cytopathic effect was observed.
Third, experimental results
According to the above experimental method, CO is maintained at 37 deg.C2The cell state was observed in the incubator for 72 hours, and the cell state was good and no cytopathic effect was observed under the microscope in the case of 50. mu.L and 25. mu.L of the drug as the inoculum dose. The cytopathic effect of 12.5. mu.L, 7.5. mu.L and 3.75. mu.L appeared to different degrees, and the inoculation dose of 3.75. mu.L was used as the group and 200TCID was used50The cytopathic effect was not different.
Fourthly, judging the result
Based on the above experimental results, it was determined that 200TCID was completely inhibited when the drug was administered in a dose of 50. mu.L or 25. mu.L50200TCID was not completely inhibited by 12.5. mu.L, 7.5. mu.L of the inoculum dose50Virus-infected cells failed to inhibit 200TCID at an inoculum dose of 3.75. mu.L50The virus infects the cells.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.