CN108210931A - Nanometer diagnosis and treatment agent, preparation method and application - Google Patents

Nanometer diagnosis and treatment agent, preparation method and application Download PDF

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CN108210931A
CN108210931A CN201611159986.2A CN201611159986A CN108210931A CN 108210931 A CN108210931 A CN 108210931A CN 201611159986 A CN201611159986 A CN 201611159986A CN 108210931 A CN108210931 A CN 108210931A
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hmon
gox
nano particle
nanometer
diagnosis
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黄鹏
范文培
汪天富
林静
陈小元
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Shenzhen University
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    • AHUMAN NECESSITIES
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    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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    • A61K49/222Echographic preparations; Ultrasound imaging preparations ; Optoacoustic imaging preparations characterised by a special physical form, e.g. emulsions, liposomes
    • A61K49/225Microparticles, microcapsules

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Abstract

The present invention provides a kind of nanometer of diagnosis and treatment agent, is to load glucose oxidase (GOx) and L arginine simultaneously as carrier material by the use of hollow mesoporous organosilicon nano particle (HMON).The present invention also provides the preparation method and applications of this nanometer of diagnosis and treatment agent.The synergistic treatment that the ultrasonic imaging of tumour and the hungry treatment of tumour are combined with Gases for Treating can be achieved at the same time in this nanometer of diagnosis and treatment agent.Preparation process of the present invention is simple and convenient to operate, the equipment for not needing to complex and expensive, it is easy to accomplish industrialized production, therefore have a good application prospect in the Clinics and Practices field of tumour.

Description

Nanometer diagnosis and treatment agent, preparation method and application
Technical field
The present invention relates to medical nano material field, more particularly, to a kind of for treating the nano material of tumour, specifically It is related to a kind of nanometer of diagnosis and treatment agent, preparation method and application.
Background technology
As a kind of alternative of chemotherapy of tumors, Gases for Treating is widely studied due to its very little side effect, And it is considered as the therapy of a kind of " green ".In numerous gas mediums, nitric oxide (NO) is because of its special physiology It is widely used in the Gases for Treating of tumour with pathological active.On the one hand, high concentration NO (>1 μM) mitochondria can be passed through Cancer cell is directly killed with the nitrosification of DNA;On the other hand, NO can cooperate with enhancing photodynamic therapy and radiotherapy to control Therapeutic effect.During NO Gases for Treating tumours, simultaneously can it is crucial that developing a kind of good NO donors of biocompatibility Continuously discharge NO gases.L-arginine (L-Arg) has excellent bio-compatible as a kind of natural NO donors Property, and under the catalysis of induction NO synzyme and hydrogen peroxide (H can be passed through2O2) decomposition sustained release NO gases.Therefore, when L-Arg is transported to rich in H2O2Tumor microenvironment in when can generate a large amount of NO gases and for tumour Gases for Treating.
The hungry treatment of tumour mainly blocks the nutrition supply of tumor area and inhibits tumour growth by vascular embolization. Since glucose is the main energy sources substance of tumor metabolic, by the metabolic response of glucose, i.e., in glucose oxidase (GOx) under catalysis by convert glucose be gluconic acid and hydrogen peroxide (H2O2), so as to largely consume the glucose in tumour, Play the effect of hungry treatment tumour.In addition, H caused by GOx degradation glucose2O2H in tumour cell can be dramatically increased2O2 Concentration, so as to cause tumour cell in high H2O2Death under concentration.High H2O2Concentration can be used for decomposing L-Arg and discharge big Measure the Gases for Treating that NO gases are used for tumour, but high concentration H at present2O2It is not fully used.
At present, the hungry treatment of single Gases for Treating or tumour has many limitations, and curative effect is not notable enough.
Invention content
A kind of be simple and convenient to operate the purpose of the present invention is to provide preparation process nanometer diagnosis and treatment agent, preparation method And application.
For achieving the above object, the present invention specifically provides a kind of nanometer of diagnosis and treatment agent, with hollow mesoporous organosilicon nanometer Particle loads glucose oxidase and L-arginine simultaneously as carrier material, the carrier material.
In a specific embodiment of the invention, the hollow mesoporous organosilicon nano particle a diameter of 180~ 240nm, cavity size are 120~180nm, and pore size is 3~4nm.
In a specific embodiment of the invention, the glucose oxidase (GOx) is grafted on hollow mesoporous organic On nano silicon particles surface;
Preferably, glucose oxidase (GOx) covalence graft is on hollow mesoporous organosilicon nano grain surface.
In a specific embodiment of the invention, the L-arginine (L-Arg) is loaded in hollow mesoporous organosilicon Nano particle cavity inside.
Preferably, glucose oxidase (GOx) is the glucose oxidase (GOx) of amino functional.
In a preferred technical solution of the invention, the present invention provides a kind of nanometer of diagnosis and treatment agent, with hollow mesoporous organic Nano silicon particles (HMON) are used as a kind of carrier material, which loads glucose oxidase (GOx) and L- essence ammonia simultaneously Sour (L-Arg), wherein glucose oxidase (GOx) are grafted on HMON surfaces, and L-arginine (L-Arg) is loaded in HMON cavitys It is internal.
In the above-mentioned technical proposal of the present invention, the preparation method of the hollow mesoporous organosilicon nano particle (HMON) Including:
A) solid SiO is prepared2Nano particle:Organic solvent, water and ammonia spirit are mixed, then add in orthosilicic acid tetrem Ester (TEOS) simultaneously stirs, and solid SiO is made2Nano particle;
B) in solid SiO2Nano grain surface wraps up one layer of mesoporous organosilicon:Pore creating material and amine substance are added to water In, then add in solid SiO prepared by above-mentioned steps a)2Nano particle simultaneously stirs, and adds in coupling agent and stirs, and obtains surface packet It is wrapped with the solid SiO of one layer of mesoporous organosilicon2Nano particle;
C) solid SiO is removed2Nano particle:By the solid of surface one layer of mesoporous organosilicon of package of above-mentioned steps b) preparations SiO2Nano particle is dispersed in Na2CO3In solution, stir 1-3 hours, obtain hollow mesoporous organosilicon nano particle (HMON).
Another aspect of the present invention is to provide the preparation method of a kind of nanometer of diagnosis and treatment agent, specifically comprise the following steps:
A) solid SiO is prepared2Nano particle:Organic solvent, water and ammonia spirit are mixed, then add in orthosilicic acid tetrem Ester (TEOS) simultaneously stirs, and solid SiO is made2Nano particle;
B) in solid SiO2Nano grain surface wraps up one layer of mesoporous organosilicon:Pore creating material and amine substance are added to water In, then add in solid SiO prepared by above-mentioned steps a)2Nano particle simultaneously stirs, and adds in coupling agent and stirs, and obtains surface packet It is wrapped with the solid SiO of one layer of mesoporous organosilicon2Nano particle;
C) solid SiO is removed2Nano particle:Wrap up the reality of one layer of mesoporous organosilicon in surface prepared by above-mentioned steps b) Heart SiO2Nano particle is dispersed in Na2CO3In solution, stir 1-3 hours, obtain hollow mesoporous organosilicon nano particle (HMON);
D) glucose oxidase (GOx) is grafted to hollow mesoporous organosilicon nano particle (HMON) surface:By amine salt and Portugal Grape carbohydrate oxidase (GOx) is dissolved in water, and is then added in coupling agent and is stirred to obtain solution for standby;By hollow mesoporous organosilicon nanometer Particle (HMON), which is dispersed in water and adds in above-mentioned solution, to be continued stirring and obtains within 20-30 hour glucose oxidase (GOx) to be grafted HMON (HMON-GOx) particle;
E) HMON-GOx loads L-Arg:HMON-GOx and L-Arg prepared by step d) is dispersed in water and stirs at room temperature The HMON (L-Arg-HMON-GOx) for being loaded and (being transported altogether) GOx and L-Arg simultaneously in 20-30 hours is mixed, is centrifuged, freezing It is dry, obtain nanometer diagnosis and treatment agent.
In a specific embodiment of the invention, the organic solvent described in step a) is alcohols, ketone, ethers, Preferred alcohol, methanol, propyl alcohol, glycerine.
In a specific embodiment of the invention, the pore creating material described in step b) is pore-creating commonly used in the art Agent, preferably hexadecyltrimethylammonium chloride (CTAC).
In a specific embodiment of the invention, amine substance is triethanolamine (TEA) in step b).
In a specific embodiment of the invention, coupling agent is silane coupling agent in step b), preferably bis- [3- (three Triethoxysilyl) propyl] tetrasulfide (BTES).
In a specific embodiment of the invention, amine salt is 1- (3- dimethylamino-propyls) -3- ethyls in step d) Carbodiimide hydrochloride (EDC), n-hydroxysuccinimide (NHS) or combination;It is preferred that combination, matches Than being 1:1~1:2.
In a specific embodiment of the invention, coupling agent is silane coupling agent, preferably 3- aminopropyls in step d) Triethoxysilane (APTES).
In a specific embodiment of the invention, used water is ultra-pure water.
In a specific embodiment of the invention, further included after wherein step c):It is more using NaCl methanol solutions Secondary extraction removes remaining pore creating material in hollow mesoporous organosilicon nano particle (HMON).
Heretofore described room temperature refers to the indoor temperature in laboratory, and range is at 20-25 degrees Celsius.
In a specific technical solution of the invention, specifically comprise the following steps:
A) solid SiO is prepared2Nano particle:By 74mL ethyl alcohol, 10mL ultra-pure waters and 3.14mL ammonia in 30 DEG C of water-bath Aqueous solution is mixed and stirred for 5 minutes, is then quickly added into 6mL tetraethyl orthosilicates (TEOS) and is continued stirring and obtains reality in 1 hour Heart SiO2Nano particle centrifuges, and is dispersed in 60mL ultra-pure waters after ethyl alcohol washing, for use;
B) in solid SiO2Nano grain surface wraps up one layer of mesoporous organosilicon:2g hexadecyltrimethylammonium chlorides (CTAC) it is added in 90mL ultra-pure waters and stirs 1.5 hours with 0.04g triethanolamines (TEA), then add in the above-mentioned systems of 30mL Standby solid SiO2Nanoparticles solution is simultaneously again stirring for 1.5 hours;Then bis- [3- (the triethoxy first silicon of 1.8mL are added dropwise Alkyl) propyl] tetrasulfide (BTES) and being stirred under 80 ° obtains being coated with the solid of one layer of mesoporous organosilicon for 1 hour SiO2Nano particle centrifuges, and is dispersed in 30mL ultra-pure waters after ethyl alcohol washing, for use;
C) solid SiO is removed2Nano particle:The surface of above-mentioned preparation is wrapped up to the solid SiO of one layer of mesoporous organosilicon2It receives Rice grain is dispersed in the Na of 0.6 mol/L2CO3It stirs 1 hour, centrifuges in solution and at 80 DEG C, after milli-Q water Obtain HMON;
D) remaining CTAC in removal HMON is repeatedly extracted using NaCl methanol solutions;
E) the GOx covalence grafts of amino functional are to HMON surfaces:38mg 1- (3- dimethylamino-propyls) -3- ethyl carbon Diimmonium salt hydrochlorate (EDC), 57mg n-hydroxysuccinimides (NHS) and a certain amount of GOx are dissolved in 6
In mL ultra-pure waters, then add in 45 μ L 3- aminopropyl triethoxysilanes (APTES) and at room temperature stirring it is 8 small When, 20mg HMON, which are dispersed in 4mL ultra-pure waters and add in above-mentioned solution, continues the HMON that stirring obtains GOx grafting for 24 hours (HMON-GOx) particle centrifuges, and is dispersed in 5mL ultra-pure waters after milli-Q water, for use.
F) HMON-GOx loads L-Arg:20mg HMON-GOx and 200mg L-Arg be dispersed in 10mL ultra-pure waters and The HMON (L-Arg-HMON-GOx) for being loaded and (being transported altogether) GOx and L-Arg simultaneously in 24 hours, centrifugation point are stirred at room temperature From freeze-drying.
Third aspect present invention is to provide application of the nanometer diagnosis and treatment agent in the preparation for preparing treatment tumour, together When the diagnosis and treatment agent also be used as acoustic contrast agent.
Preferably, the treatment of the tumour is simultaneously using hungry treatment and Gases for Treating.
The invention has the advantages that:The nanometer diagnosis and treatment agent prepared by preparation method of the present invention can be achieved at the same time swollen The synergistic treatment that the ultrasonic imaging of knurl and the hungry treatment of tumour are combined with Gases for Treating, thus tumour diagnosis with controlling Treatment field will have a good application prospect.Meanwhile preparation process of the invention is simple and convenient to operate, and does not need to complex and expensive Equipment, it is easy to accomplish industrialized production.
Description of the drawings
Fig. 1 is that the route map of hollow mesoporous organosilicon nano particle (HMON) and corresponding TEM figures are synthesized in embodiment 1;
Fig. 2 is that synthesis HMON loads (transport altogether) simultaneously the route map of GOx and L-Arg and corresponding TEM in embodiment 2 Figure;
Fig. 3 is fragmentation effect of evaluation starvation in the embodiment 3/gas associating treatment to U87MG tumour cells;
Fig. 4 is that HMON-GOx is evaluated in embodiment 4 to U87MG tumours blood oxygen saturation and H2O2The influence of content;
Inhibition of the starvation/gas associating treatment to U87MG tumour growths is evaluated in Fig. 5 embodiments 5.
Specific embodiment
With reference to specific embodiment, the present invention is further explained.It should be understood that these embodiments are merely to illustrate the present invention Rather than it limits the scope of the invention.
Embodiment 1 synthesizes hollow mesoporous organosilicon nano particle (HMON)
74mL ethyl alcohol, 10mL ultra-pure waters and 3.14mL ammonia spirits are mixed and stirred for 5 points first in 30 DEG C of water-bath Clock is then quickly added into 6mL tetraethyl orthosilicates (TEOS) and continues stirring 1 hour, obtains solid SiO2Nano particle.By 2g CTAC and 0.04g triethanolamines (TEA) are added in 90mL ultra-pure waters and stir 1.5 hours, add in the reality of the above-mentioned preparations of 30mL Heart SiO2Nanoparticles solution stirs 1.5 hours.To above-mentioned solution be added dropwise 1.8mL BTES and at 80 DEG C stirring it is 1 small When obtain surface wrap up one layer of mesoporous organosilicon solid SiO2Nano particle.It is finally that one layer prepared of surface package is mesoporous The solid SiO of organosilicon2Nano particle is dispersed in the Na of 0.6 mol/L2CO3It stirs 1 hour, centrifuges in solution and at 80 DEG C It detaches, HMON is obtained after milli-Q water.Remaining CTAC then repeatedly extracts removal using NaCl methanol solutions in HMON, obtains Hollow mesoporous organosilicon nano particle (HMON).
A diameter of 180~240nm of the hollow mesoporous organosilicon nano particle, cavity size be 120~180nm, hole Size is 3~4nm.
Route map and the corresponding TEM figures for synthesizing hollow mesoporous organosilicon nano particle (HMON) are as shown in Figure 1.
(a) represents to synthesize the route map of hollow mesoporous organosilicon nano particle (HMON) in Fig. 1, and wherein CTAC represents 16 Alkyl trimethyl ammonium chloride, TEA represent triethanolamine, and BTES represents bis- [3- (triethoxysilyl) propyl] four vulcanization Object, Na2CO3Represent sodium carbonate;(b), (c), (d) represent solid SiO respectively2Nano particle (SiO2), be coated with one layer of Jie The solid SiO of hole organosilicon2Nano particle (SiO2@MON), the TEM of hollow mesoporous organosilicon nano particle (HMON) figure.
Embodiment 2 synthesizes L-Arg-HMON-GOx
First 38mg EDC, 57mg NHS and a certain amount of GOx are dissolved in 6mL ultra-pure waters, and add in 45 μ L APTES After be stirred at room temperature 8 hours and obtain amidized GOx.Then 20mg HMON are dispersed in 4mL ultra-pure waters and added in above-mentioned Solution continues HMON (HMON-GOx) particle that stirring obtains GOx grafting for 24 hours.Finally by 20mg HMON-GOx and 200mg L-Arg is dispersed in 10mL ultra-pure waters and (stirring) is stirred at room temperature 24 hours, is transported GOx's and L-Arg altogether HMON (L-Arg-HMON-GOx) multifunctional nano diagnosis and treatment agent.Synthesis HMON loads (transport altogether) simultaneously GOx and L-Arg route maps It is as shown in Figure 2 with TEM figures.
(a) represents that synthesis HMON loads (transport altogether) simultaneously GOx and L-Arg route maps in Fig. 2, and wherein APTES represents 3- Aminopropyl triethoxysilane, NHS represent n-hydroxysuccinimide, and EDC represents 1- (3- dimethylamino-propyls) -3- ethyl carbon Diimmonium salt hydrochlorate, GOx represent glucose oxidase, and L-Arg represents L-arginine;(b), (c), (d) represent hollow Jie respectively Hole organic silicon nano particle (HMON), GOx grafting HMON (HMON-GOx) while the HMON for loading and (transporting altogether) GOx and L-Arg (L-Arg-HMON-GOx) TEM figures.
The weight proportion of glucose oxidase and L-arginine is 1:1-1:2, preferably 1:1.3.
Embodiment 3
Using the mtt assay of standard, starvation/influence of the Gases for Treating synergistic therapeutic action to U87MG cell survival rates is evaluated. U87MG cells are with every hole 1 × 104Density is inoculated into 96 orifice plates, is placed in 37 DEG C, 5%CO2Under the conditions of cultivate for 24 hours.Then, it inhales Go out the old culture medium in 96 orifice plates, be separately added into containing 200 μ g/mL HMON-GOx, HMON-L-Arg and L-Arg-HMON-GOx Sugar-free DMEM culture mediums (no glucose) and have sugared (100 μ g/mL glucose) DMEM culture mediums.Continue culture for 24 hours Afterwards, the old culture medium in 96 orifice plates is sucked out, the culture medium solution of 100 μ L MTT is added in each hole, and (0.8mg/mL continues to train Support 4h.The residual media in 96 orifice plates is sucked out, 100 μ L DMSO solutions are added in each hole, after jiggling, in Bio- OD value (Detection wavelength 570nm) of the detection per hole in the type microplate reader of TelEL × 800 calculates cell survival rate with equation below. Cell survival rate (cell viability) (%)=(the OD570 values of sample/blank OD570 values) × 100%, experimental result is shown in Fig. 3.
As shown in figure 3, in sugar-free DMEM culture mediums (no glucose), L-Arg-HMON-GOx can be significantly reduced U87MG cell survival rates (cell viability);And the fragmentation effect to cell of L-Arg-HMON-GOx is significantly better than HMON-GOx, HMON-L-Arg are to the fragmentation effect of cell;In having sugared (100 μ g/mL glucose) DMEM culture mediums, L- Arg-HMON-GOx can significantly reduce U87MG cell survival rates (cell viability), and pair of L-Arg-HMON-GOx The fragmentation effect of cell is significantly better than the fragmentation effect of HMON-GOx, HMON-L-Arg to cell.
Embodiment 4
All experimental implementations according to the clinical center animal health of National Institutes of Health and use the committee By animal use and health care system.Female athymic nude mice (six weeks, 20-25g), nude mice foreleg be subcutaneously injected 2 × 106The PBS solution of U87MG tumour cells establishes mouse tumor model.When gross tumor volume reaches 60mm3When, by 150 μ L 10mg/mL The PBS solution of HMON-GOx by way of intratumor injection, is directly injected into U87MG tumours, utilizes toy photoacoustic imaging system " Oxyhemo " pattern of (VisualSonics Vevo LAZR system) detects the blood oxygen saturation of tumor area (average sO2(%)), variation of the observation tumour blood oxygen saturation after HMON-GOx injections in 2h.In addition, utilize sulphur The H of tumor area after sour titanium detection HMON-GOx injections 4h2O2Concentration (H2O2concentration).Experimental result is shown in Fig. 4.
(a) (b) (c) represents tumour the blood oxygen of 2h is satisfied after 1h and injection before HMON-GOx injections, after injection respectively in Fig. 4 With concentration schematic diagram, (d) represents blood oxygen saturation (average sO2(%)) variation after HMON-GOx injections in 2h Figure, (e) represent the H of tumor area after HMON-GOx injections 4h2O2Concentration (H2O2Concentration) change;It is as shown in figure 4, swollen Knurl blood oxygen saturation (average sO2(%)) it can be significantly reduced in 2h, while HMON-GOx is noted after HMON-GOx injections Enter the H of tumor area after 4h2O2Concentration (H2O2Concentration it) significantly improves.
Embodiment 5
Female athymic nude mice (six weeks, 20-25g) is subcutaneously injected 2 × 10 in nude mice foreleg6U87MG tumour cells PBS solution establishes mouse tumor model.When gross tumor volume reaches 60mm3When, carry out Experiment on therapy.U87MG tumor-bearing mices divide at random It is five groups:(1) blank group (control);(2) HMON groups are injected;(3) HMON-L-Arg groups are injected;(4) HMON-GOx groups are injected; (5) L-Arg-HMON-GOx groups are injected.Vernier caliper measurement gross tumor volume is every other day used, and according to formula V=AB2/ 2 calculate Gross tumor volume (relative volume), wherein A are the major diameters of tumour, and B is the minor axis (mm) of tumour.Each measurement result is equal It is normalized, and observe the life cycle (survival) of every group of mouse by the starting tumor volume of before processing.Experimental result See Fig. 5.
(f) represents the situation of change of different treatment group tumors volumes (relative volume) (Day) at any time in Fig. 5, As shown in figure 5, injection L-Arg-HMON-GOx groups can significantly inhibit the growth of tumour, the effect of L-Arg-HMON-GOx groups is injected Fruit is significantly better than injection HMON-GOx groups, injection HMON-L-Arg groups, injection HMON groups and blank group (control);(g) table Show the situation of change of the life cycle (survival) of different treatment group mouse (Day) at any time, as shown in figure 5, injection L- Arg-HMON-GOx groups significantly improve the life cycle of mouse, and the significant effect of injection L-Arg-HMON-GOx groups is better than injection HMON-GOx groups, injection HMON-L-Arg groups, injection HMON groups and blank group (control).
The ultrasonic imaging of tumour can be achieved at the same time in diagnosis and treatment agent of the present invention and the hungry treatment of tumour is controlled with gas Treat the synergistic treatment being combined.
In the present invention, the HMON has good biocompatibility, cell survival rate after being co-cultured 24 hours with cell More than 95%;The HMON has good biodegradability, degradable complete in 30 days.The HMON can be used as super Sound contrast agent is used for tumour ultrasonic imaging.
The GOx of HMON surfaces covalence graft for gluconic acid and can have intracellular convert glucose cytotoxic Hydrogen peroxide (H2O2), so as to largely consume intracellular energy source and nutriment, play the effect of hungry treatment tumour.
L-Arg is in acidic environment caused by GOx and H2O2Lower decomposable asymmetric choice net generates a large amount of nitric oxide gas, so as to real The Gases for Treating of existing tumour.
First, HMON has good biocompatibility and biodegradability, and HMON can be used as acoustic contrast agent For the ultrasonic imaging of tumour.Secondly, intracellular convert glucose for gluconic acid and is had cytotoxic using GOx Hydrogen peroxide so as to largely consume intracellular energy source and nutriment, plays the effect of hungry treatment tumour.The opposing party Face efficient-decomposition L-arginine and can generate a large amount of nitric oxide gas using acidic environment caused by GOx and hydrogen peroxide, So as to fulfill the Gases for Treating of tumour.
The invention has the advantages that:The nanometer diagnosis and treatment agent prepared by preparation method of the present invention can be achieved at the same time swollen The synergistic treatment that the ultrasonic imaging of knurl and the hungry treatment of tumour are combined with Gases for Treating, thus tumour diagnosis with controlling Treatment field will have a good application prospect.Meanwhile preparation process of the invention is simple and convenient to operate, and does not need to complex and expensive Equipment, it is easy to accomplish industrialized production.
It is it is necessary to described herein finally:Above example is served only for making technical scheme of the present invention further detailed Ground explanation, it is impossible to be interpreted as limiting the scope of the invention, those skilled in the art's the above according to the present invention Some the nonessential modifications and adaptations made all belong to the scope of protection of the present invention.

Claims (10)

1. a kind of nanometer of diagnosis and treatment agent, it is characterised in that:Using hollow mesoporous organosilicon nano particle as carrier material, the carrier material Material loads glucose oxidase and L-arginine simultaneously.
2. according to claim 1 nanometer of diagnosis and treatment agent, which is characterized in that the diameter of the hollow mesoporous organosilicon nano particle For 180~240nm, cavity size is 120~180nm, and pore size is 3~4nm.
3. according to claim 1 nanometer of diagnosis and treatment agent, which is characterized in that the glucose oxidase (GOx) is grafted on the sky On the surface of heart mesoporous organosilicon nano particle.
4. according to claim 1 nanometer of diagnosis and treatment agent, which is characterized in that it is hollow that the L-arginine (L-Arg) is loaded in this The cavity inside of mesoporous organosilicon nano particle.
5. according to claim 1 nanometer of diagnosis and treatment agent, which is characterized in that the glucose oxidase (GOx) is amino functional The glucose oxidase (GOx) of change.
6. the preparation method of claim 1-5 any one of them nanometer diagnosis and treatment agent, which is characterized in that specifically include following step Suddenly:
A) solid silica (SiO is prepared2) nano particle:Organic solvent, water and ammonia spirit are mixed, then add in former silicon Sour tetra-ethyl ester (TEOS) is simultaneously stirred, and obtains solid SiO2Nano particle;
B) in solid SiO2Nano grain surface wraps up one layer of mesoporous organosilicon:Pore creating material and amine substance are added to the water, so Solid SiO prepared by above-mentioned steps a) is added in afterwards2Nano particle simultaneously stirs, and adds in coupling agent and stirs, is coated with The solid SiO of one layer of mesoporous organosilicon2Nano particle;
C) solid SiO is removed2Nano particle:The solid of one layer of mesoporous organosilicon is coated with by prepared by above-mentioned steps b) SiO2Nano particle is dispersed in Na2CO3In solution, stir 1-3 hours, obtain hollow mesoporous organosilicon nano particle (HMON);
D) glucose oxidase (GOx) is grafted to the surface of hollow mesoporous organosilicon nano particle (HMON):By amine salt and grape Carbohydrate oxidase (GOx) is dissolved in water, and is then added in coupling agent and is stirred to obtain solution for standby;By hollow mesoporous organosilicon nanometer Grain (HMON), which is dispersed in water and adds in above-mentioned solution and continue stirring, obtains what glucose oxidase (GOx) was grafted for 20-30 hour HMON (HMON-GOx) particle;
E) HMON-GOx loads L-Arg:HMON-GOx and L-Arg prepared by step d) is dispersed in water and is stirred at room temperature The HMON (L-Arg-HMON-GOx) for being loaded GOx and L-Arg simultaneously in 20-30 hours is centrifuged, and is freeze-dried, and is obtained Nanometer diagnosis and treatment agent.
7. the preparation method of according to claim 6 nanometer of diagnosis and treatment agent, which is characterized in that further included after step c):Profit Remaining pore creating material in the hollow mesoporous organosilicon nano particle (HMON) of removal is repeatedly extracted with NaCl methanol solutions.
8. according to application of the claim 1-5 any one of them nanometer diagnosis and treatment agent in the preparation for preparing treatment tumour.
9. application according to claim 8, which is characterized in that the nanometer diagnosis and treatment agent is also used as acoustic contrast agent simultaneously.
10. application according to claim 8, which is characterized in that the treatment is controls using hungry treatment and gas simultaneously It treats.
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