CN113855663A - Application of oridonin in preparation of anti-prostatic cancer drugs - Google Patents
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Abstract
The invention relates to the technical field of prostate cancer treatment, in particular to application of oridonin in preparation of a prostate cancer resistant medicament. The invention aims to provide a new choice for treating prostate cancer. The technical scheme of the invention is the application of oridonin in preparing the anti-prostate cancer medicament. The invention verifies that oridonin inhibits the proliferation, migration and invasion of PC-3 cells by up-regulating miR-204-5p expression and blocking NF-kB signal pathway activity. The invention discloses the anti-tumor effect of oridonin on PC-3 cells in vitro, provides possibility for the oridonin as a potential anti-PCa medicament, and provides a new choice for preparing the anti-PCa medicament.
Description
Technical Field
The invention relates to the technical field of prostate cancer treatment, in particular to application of oridonin in preparation of a prostate cancer resistant medicament.
Background
The bone metastasis of Prostate cancer (PCa) is the main cause of death of PCa patients, and the current treatment measures for PCa bone metastasis mainly include surgery, chemotherapy, radiotherapy and the like, wherein chemotherapy is one of the main treatment methods for PCa bone metastasis. However, chemotherapy is easy to cause side effects such as gastrointestinal reaction, neuropathy and the like, so that the exploration of an effective PCa bone metastasis treatment medicament with small toxic and side effects has important clinical significance.
microRNAs are a class of non-coding RNAs widely distributed in eukaryotes that mediate gene degradation or inhibit its translation by binding to the 3' UTR region of the target gene. Researches find that the abnormal expression of the microRNAs is closely related to the occurrence and development of tumors, and can be used as a marker and a therapeutic target for tumor diagnosis.
Oridonin (ORI) is a diterpene active substance isolated from Rabdosia rubescens.
Disclosure of Invention
The invention aims to provide a new choice for treating prostate cancer.
The technical scheme of the invention is the application of oridonin in preparing the anti-prostate cancer medicament.
The invention also provides the application of the oridonin in preparing the medicine for resisting the bone metastasis of the prostate cancer.
The invention also provides a medicament for resisting the prostatic cancer or the prostatic cancer bone metastasis, and the main active component of the medicament is oridonin.
Preferably, the concentration of the oridonin is 5-20 mu M.
More preferably, the concentration of the oridonin is 20 μ M.
The invention further provides application of oridonin in regulation and control of gene miR-204-5p expression and/or NF-kB signal pathway.
Specifically, the expression of the regulatory gene miR-204-5p is the expression of an up-regulated gene miR-204-5 p.
Preferably, the NF- κ B signal pathway is the expression of regulatory genes P65, TRAF1, TAB3 and/or MAP3K 3.
Specifically, the expression of the regulatory gene P65, TRAF1, TAB3 and/or MAP3K3 is the expression of the inhibitory gene P65, TRAF1, TAB3 and/or MAP3K 3.
The invention also provides a composition for regulating and controlling the expression of the gene miR-204-5p and/or the NF-kB signal pathway, and the main active ingredient of the composition is oridonin.
Specifically, in the composition for regulating expression of the gene miR-204-5p, the concentration of oridonin is 5-20 mu M.
Preferably, in the composition for regulating expression of the gene miR-204-5p, the concentration of the oridonin is 10-20 mu M.
Furthermore, in the composition for regulating and controlling the NF-kB signal channel, the concentration of the oridonin is 5-20 mu M.
Preferably, the concentration of the oridonin in the composition for regulating and controlling the NF-kB signal channel is 20 mu M.
The invention has the beneficial effects that: the invention verifies that oridonin inhibits the proliferation, migration and invasion of PC-3 cells by up-regulating miR-204-5p expression and blocking NF-kB signal pathway activity. The invention discloses the anti-tumor effect of oridonin on PC-3 cells in vitro, provides possibility for the oridonin as a potential anti-PCa medicament, and provides a new choice for preparing the anti-PCa medicament.
Drawings
FIG. 1, oridonin inhibits PC-3 cell proliferation; A. the influence of the oridonin solutions with different concentrations on the proliferation capacity of PC-3 cells; B. the effect of oridonin solution on the proliferation ability of PC-3 cells at different times. Wherein, Relative cell promotion (%): relative cell proliferation (%); oridonin (μ M): oridonin (μmol/L); DMSO, DMSO: dimethyl sulfoxide (DMSO).
FIG. 2 shows that oridonin inhibits the migration of PC-3 cells; the A-D, Transwell method is used for evaluating the influence of oridonin solution on PC-3 cell migration; E. migration cell rate. Wherein, Relative migration ratio: (ii) cell mobility; oridonin (μ M): oridonin (μmol/L).
FIG. 3 shows that oridonin inhibits the invasion ability of PC-3 cells; A-D, Transwell method for evaluating the effect of oridonin solution on invasion of PC-3 cells; E. the rate of invading cells. Relative invasion ratio: the rate of cell invasion; oridonin (μ M): oridonin (μmol/L).
FIG. 4 shows that oridonin inhibits NF-kB signal pathway expression by up-regulating miR-204-5 p; A-E, qRT-PCR (polymerase chain reaction) is used for detecting mRNA (messenger ribonucleic acid) expression of miR-204-5p and NF-kB signal channel related genes; F. westernblot detects NF-kB signal channel related protein expression, and p85 is an internal reference. Wherein, Relative miR-204-5P mRNA expression level: relative mRNA expression level of miR-204-5P; relative TRAF1 mRNA expression level: relative mRNA expression levels of TRAF1 gene; relative TAB3 mRNA expression level: the relative mRNA expression level of the TAB3 gene; relative P65 mRNA expression level: relative mRNA expression levels of the P65 gene; relative MAP3K3 mRNA expression level: relative mRNA expression levels of the MAP3K3 gene; oridonin (μ M): oridonin (μmol/L); DMSO, DMSO: dimethyl sulfoxide (DMSO). Vector: empty vector group, miR-204-5P: miR-204-5P overexpression group, DMSO: DMSO group, Oridonin: rubescensin A.
FIG. 5, oridonin inhibits the growth of PC-3 cells in vivo; A. the representative immunohistochemical staining result of the PC-3 cells expressing NF-kB signal channel related genes in vivo by the oridonin solution; B. the weight influence of the oridonin solution on the growth of PC-3 cells in vivo; C. the influence of the oridonin solution on the expression level of miR-204-5p in an animal body; the influence of D-F and oridonin solution on the expression of NF-kB signal channel molecules by PC-3 cells. Tumor weight (mg): tumor body weight (mg); relative miR-204-5P mRNA expression level: relative mRNA expression level of miR-204-5P; relative positive cells field (%): relative percentage (%) of positive cells.
Detailed Description
Reagent, biological material, instrument and apparatus
Human prostate cancer PC-3 cells (purchased from american type culture ATCC collection) were cultured using 1640 medium supplemented with 10% fetal bovine serum, 5% penicillin, and streptomycin (purchased from Gibco, usa); rubescensin A (purchased from Wuhan Huichui Chenopout Bio Inc. of China); RPMI 1640 medium, 0.25% trypsin-EDTA (available from Hyclone, USA); fetal bovine serum, penicillin/streptomycin (available from Gibco, usa); p65, P84, TRAF1, TAB3, and MAP3K3 antibodies (available from Cell Signaling Technology, usa); CCK-8 cell activity detection kit (purchased from Beijing Quanzijin Biotechnology Co., Ltd., China); an RNA extraction kit, a reverse transcription kit and a fluorescent quantitative PCR kit (purchased from Takar, Japan); PCR primers (purchased from Gyka Gene medicine science and technology, China); BCA protein concentration determination kit and hypersensitive ECL chemiluminescence kit (purchased from Biyuntian Biotech, China).
CO2Cell incubator, refrigerated high speed centrifuge, ultra clean biosafety bench (Thermo Fisher, usa), fluorescence microscope (Leica, germany), vertical gel transfer system (Biorad, usa), microplate reader (BioTek, usa).
All experiments below were repeated 3 more times and the data are expressed as mean ± standard deviation. SPSS18.0 was used for analysis, and the differences between groups were compared using the t-test, with P <0.05 representing that the differences were statistically significant.
Example 1: oridonin can inhibit PC-3 cell proliferation
The CCK8 method is used to detect the effect of oridonin solution with different concentrations on cell proliferation capacity. The specific operation method comprises the following steps: cell suspensions were prepared by digesting PC-3 cells with 0.25% pancreatin at 2X 103The cells were plated at a density of 5 per well in 96-well plates. Adding 0, 0.1, 1, 5, 10, 15, 20, 30 and 40 mu mol/L oridonin solution after the cells adhere to the wall, continuously culturing for 24 hours, adding 10 mu L of CCK8 reagent into each hole, incubating for 2 hours,the absorbance at a wavelength of 450nm was then measured using a microplate reader.
The results show that the oridonin inhibits the proliferation of PC-3 cells in a concentration-dependent manner, and the difference has statistical significance compared with a control group (P <0.05), and the IC50 value is about 10 mu M (figure 1A). On the basis, after 0, 1, 2, 3, 4 and 5 days of treatment of the PC-3 cells by using 10 mu M oridonin solution, the proliferation capacity of the cells is detected by using a CCK8 method. The results show that the oridonin inhibits the activity of PC-3 cells in a time-dependent manner, and the difference has statistical significance (P <0.05) compared with the control group (figure 1B).
Example 2: oridonin can inhibit migration and invasion of PC-3 cell
The Transwell experiment is adopted to detect the influence of the oridonin solutions with different concentrations on the migration and invasion capacity of cells. The specific operation method comprises the following steps: treating PC-3 cells with 0, 5, 10, 20 μmol/L oridonin solution for 24 hr, digesting with 0.25% pancreatin, centrifuging, resuspending cell pellet, and adjusting cell density to 1 × 106one/mL. 100 μ L of the cell resuspension was added to the upper Transwell chamber and the culture continued after 800 μ L of cell culture medium was added to the lower chamber. After 24 hours, the Transwell chamber was removed, fixed with 4% paraformaldehyde for 30 minutes, washed, and then the upper cell was carefully removed with a wet cotton swab, stained with 0.1% crystal violet for 20 minutes, dried in the air, and then photographed and counted in an inverted microscope at random in 5 high power fields, and the average value was calculated. In the detection of cell migration capacity, Matrigel is not added in an upper chamber, while in the detection of cell invasion capacity, a Matrigel diluent (1: 5) is required to coat a basement membrane on the upper chamber surface of a Transwell, and other experimental conditions are the same as the operation steps.
The results show that, after PC-3 cells are treated with 0, 5, 10, 20 μ M oridonin solution for 24 hours, oridonin concentration-dependently inhibited cell migration (FIG. 2) and invasion capacity (FIG. 3), and the difference was statistically significant (P <0.05) compared with the control group.
Example 3: oridonin up-regulates miR-204-5p expression and inhibits NF-kB signal channel
qPCR and Western blot experiments are adopted to detect the expression of miR-204-5p and miR-5 p of oridonin solution on cellsThe influence of NF-. kappa.B signaling pathway molecules. The specific operation method comprises the following steps: qPCR experiment: cells were treated with oridonin solutions of various concentrations 0, 5, 10, 15, 20, 30, 40 μmol/L for 24 hours, total RNA was extracted with RNA extraction kit, reverse transcribed into cDNA according to Takara kit, and then amplified using qantifiest SYBR green mix (Qiagen). Relative expression rates of expressed genes of NF-. kappa.B signaling pathway molecules TRAF1, TAB3, P65 and MAP3K3 were examined using U6 or GAPDH as a control, and 2 was used-ΔΔCtCalculated by the method, the primer sequences are shown in the table 1. (II) Western blot experiment: PC-3 cells were seeded to 100cm2Adding 0 and 10 mu mol/L oridonin solution when the cell density is increased to 80 percent in a culture dish, extracting the total cell protein after the drug treatment by utilizing a mixed lysate of RIPA and PMSF after 24 hours, and carrying out protein quantification by using a BCA standard method. 10-12% SDS-PAGE gel was prepared for electrophoresis, PVDF membrane was electroporated for 2 hours, 2% BSA was blocked for 1 hour, primary antibody was added, and incubation was performed in a refrigerator at 4 ℃ in the dark. After washing 3 times with TBST, secondary antibody was added and incubated for 1 hour, ECL luminescence was added and the strips were exposed in an imaging system.
Both the qRT-PCR and Westernblot experimental results show that, after PC-3 cells are treated by oridonin solutions with different concentrations (0, 5, 10, 15 and 20 mu M) for 24 hours, the oridonin solutions up-regulate the expression of miR-204-5P in a concentration-dependent manner, inhibit the expression of NF-kB signal pathway molecules TRAF1, TAB3, P65 and MAP3K3 (figures 4A-E), and have statistical significance (P <0.05) compared with a control group. In addition, both over-expression of miR-204-5P and oridonin can inhibit the expression of TRAF1, TAB3, P65 and MAP3K3 in PC-3 cells, and the regulation and control effects of the two on NF-kB signal pathways are the same (FIG. 4F).
TABLE 1 qRT-PCR primer sequences
Example 4: oridonin has tumor inhibiting effect on nude mouse transplanted tumor and effects of TRAF1, TAB3 and MAP3K3 expression
Male Balb/c nude mice at 6 weeks of age were purchased from the Experimental animals center of Zhongshan university. Mice were randomly assigned toControl group and oridonin treatment group. 0.2mL (1X 10)6Individual) PC-3 cells were inoculated subcutaneously on the back of nude mice. After the tumor of the nude mice is formed, the nude mice with similar tumor volume are selected and randomly grouped, and each group comprises 6 mice. Wherein the control group was not administered any drug; oridonin treatment group, injection according to 4mg/kg standard, 1/1 day, administration of 3 weeks after sacrifice of mice, tumor tissue collection and weighing, TRAF1, TAB3, MAP3K3 and miRNA-204-5p expression level detection, disease immunohistochemical staining. As shown in FIG. 5, the tumor weight of the control group was (289.33 + -48.58) mg, while the volume of the oridonin (500mg/kg) group was (45.35 + -20.13) mg, and the tumor weights of the two groups had statistical significance (FIG. 5B). The qRT-PCR experiment result shows (figure 5C, D) that oridonin (500mg/kg) up-regulates the expression of miRNA-204-5p in nude mouse transplantable tumor, and simultaneously inhibits the expression of NF-kB signal channel downstream genes TRAF1, TAB3 and MAP3K 3. Immunohistochemistry results (fig. 5A) show: compared with the control group, the oridonin groups TRAF1, TAB3 and MAP3K3 protein expression is obviously reduced. Among them, Tumor weight (mg) in FIG. 5: tumor body weight (mg); relative miR-204-5P mRNA expression level: relative mRNA expression level of miR-204-5P; relative positive cells field (%): relative percentage (%) of positive cells.
The applicant explores whether oridonin can inhibit the proliferation, migration and invasion of PC-3 cells in vitro. Firstly, PC-3 cells are treated by oridonin solutions (0, 0.1, 1, 5, 10, 15, 20, 30 and 40 mu M) with different concentrations, and after 24 hours, the influence of the oridonin solutions on the cell proliferation capacity is detected by CCK8, and the result shows that the oridonin solutions inhibit the proliferation of the PC-3 cells in a concentration-dependent manner and have half-inhibition rate IC (integrated circuit) compared with a control group50The value was 10. mu.M. On the basis, after the cells are treated by the 10 mu M oridonin solution for 1 to 5 days, the CCK8 detection result shows that the oridonin solution inhibits the proliferation of PC-3 cells in a time-dependent manner compared with the control group. Secondly, treating the PC-3 cells for 24 hours by using 0, 5, 10 and 20 mu M oridonin solution, and detecting the change of the migration and invasion capacities of the cells by Transwell, wherein the results show that the oridonin solution is in a concentration gradient to inhibit the migration and invasion capacities of the PC-3 cells, and the concentration gradient is 5, 10 and 20 mu MUnder the action of the M oridonin solution, the number of migrated and invaded cells is obviously reduced compared with that of a control group. The results all show that the oridonin can inhibit the proliferation, migration and invasion of PC-3 cells in vitro.
miR-204-5p has an important regulation and control effect in the PCa bone metastasis process, but whether oridonin can influence the transfer capacity of PCa cells by regulating miR-204-5p expression is not clear. Therefore, the invention mainly explores whether oridonin is related to miR-204-5p in inhibiting the proliferation, migration and invasion of PC-3 cells. Firstly, treating PC-3 cells with oridonin solutions with different concentrations (0, 5, 10, 15 and 20 mu M) for 24 hours, and then detecting mRNA expression of miR-204-5p by PCR (polymerase chain reaction), wherein the result shows that the oridonin can up-regulate the expression of miR-204-5p in the PC-3 cells compared with a control group, and the up-regulation effect is most obvious at 10 mu M.
NF- κ B is a key regulator of tumorigenesis, development and metastatic processes. In the invention, PCR results show that oridonin solutions with different concentrations can not only up-regulate miR-204-5P, but also inhibit the expression of genes P65, TRAF1, TAB3 and MAP3K3 downstream of an NF-kB signal channel. In addition, Western blot results show that the oridonin solution treatment group is consistent with the result of over-expression of miR-204-5P, and the expression of molecules P65, TRAF1, TAB3 and MAP3K3 at the downstream of an NF-kB signal channel in a PC-3 cell is obviously reduced compared with a control group. Therefore, the results show that oridonin can up-regulate miR-204-5p to block NF-kB signal pathway molecule expression and participate in regulating the transfer capacity of PC-3 cells.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. Application of oridonin in preparing medicine for treating prostatic cancer is provided.
2. Application of oridonin in preparing medicine for resisting bone metastasis of prostatic cancer is provided.
3. A medicine for resisting prostatic cancer or bone metastasis of prostatic cancer comprises oridonin as main active ingredient;
the concentration of the oridonin is 5-20 mu M.
4. The application of oridonin in regulating gene miR-204-5p expression and/or NF-kB signal pathway.
5. The use of claim 4, wherein the regulatory gene miR-204-5p expression is an up-regulated gene miR-204-5p expression.
6. The use of claim 4, wherein the modulating NF- κ B signaling pathway is modulating expression of genes P65, TRAF1, TAB3 and/or MAP3K 3.
7. Use according to claim 6, wherein the expression of the regulatory gene P65, TRAF1, TAB3 and/or MAP3K3 is the expression of the suppressor gene P65, TRAF1, TAB3 and/or MAP3K 3.
8. The composition for regulating and controlling gene miR-204-5p expression and/or NF-kB signal pathway is characterized in that the main active component is oridonin;
in the composition for regulating the expression of the gene miR-204-5p, the concentration of the oridonin is 5-20 mu M.
9. The composition of claim 8, wherein the concentration of oridonin in the composition for regulating expression of gene miR-204-5p is 10-20 μ M.
10. The composition of claim 9, wherein the concentration of oridonin in the composition for modulating the NF- κ B signaling pathway is 5-20 μ Μ.
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CN115887428A (en) * | 2022-12-16 | 2023-04-04 | 遵义医科大学第二附属医院 | Application of cinnamaldehyde in preparing medicine for resisting bone metastasis of prostate cancer |
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CN105713006A (en) * | 2014-12-05 | 2016-06-29 | 鲁艳清 | Preparation method of oridonin |
CN108938660A (en) * | 2018-07-09 | 2018-12-07 | 广州医科大学附属第二医院 | MiR-204-5p is preparing the application in NF- kB inhibitor and prostate cancer transfer prevention and treatment |
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CN105713006A (en) * | 2014-12-05 | 2016-06-29 | 鲁艳清 | Preparation method of oridonin |
CN108938660A (en) * | 2018-07-09 | 2018-12-07 | 广州医科大学附属第二医院 | MiR-204-5p is preparing the application in NF- kB inhibitor and prostate cancer transfer prevention and treatment |
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