CN107714724A - A kind of carbon point as antineoplastic and its preparation method and application - Google Patents

A kind of carbon point as antineoplastic and its preparation method and application Download PDF

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CN107714724A
CN107714724A CN201710957649.6A CN201710957649A CN107714724A CN 107714724 A CN107714724 A CN 107714724A CN 201710957649 A CN201710957649 A CN 201710957649A CN 107714724 A CN107714724 A CN 107714724A
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carbon point
arginine
antineoplastic
carbon
ethylenediamine
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CN107714724B (en
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刘学
程佳敏
张国林
吴秋华
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Liaoning University
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K33/00Medicinal preparations containing inorganic active ingredients
    • A61K33/44Elemental carbon, e.g. charcoal, carbon black
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/185Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19Carboxylic acids, e.g. valproic acid
    • A61K31/195Carboxylic acids, e.g. valproic acid having an amino group
    • A61K31/197Carboxylic acids, e.g. valproic acid having an amino group the amino and the carboxyl groups being attached to the same acyclic carbon chain, e.g. gamma-aminobutyric acid [GABA], beta-alanine, epsilon-aminocaproic acid or pantothenic acid
    • A61K31/198Alpha-amino acids, e.g. alanine or edetic acid [EDTA]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00Preparations for testing in vivo
    • A61K49/001Preparation for luminescence or biological staining
    • A61K49/0013Luminescence
    • A61K49/0017Fluorescence in vivo
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00Preparations for testing in vivo
    • A61K49/001Preparation for luminescence or biological staining
    • A61K49/0063Preparation for luminescence or biological staining characterised by a special physical or galenical form, e.g. emulsions, microspheres
    • A61K49/0069Preparation for luminescence or biological staining characterised by a special physical or galenical form, e.g. emulsions, microspheres the agent being in a particular physical galenical form
    • A61K49/0089Particulate, powder, adsorbate, bead, sphere
    • A61K49/0091Microparticle, microcapsule, microbubble, microsphere, microbead, i.e. having a size or diameter higher or equal to 1 micrometer
    • A61K49/0093Nanoparticle, nanocapsule, nanobubble, nanosphere, nanobead, i.e. having a size or diameter smaller than 1 micrometer, e.g. polymeric nanoparticle
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/14Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/141Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers
    • A61K9/145Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers with organic compounds

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Abstract

The present invention relates to a kind of carbon point as antineoplastic and its preparation method and application.Using arginine as carbon source, it is completely dissolved with water, adds appropriate ethylenediamine, ultrasonic dissolution, microwave, which heats, produces target product carbon point.Due to inherently having hydrogen peroxide in cancer cell in organism, so carbon point prepared by the present invention can be used for treating cancer.It can not only fluorescence imaging but also have the characteristics that good biocompatibility, NO burst sizes it is more, effect circulation time it is long, medicine stability is good, cheap and easy to get.

Description

A kind of carbon point as antineoplastic and its preparation method and application
Technical field
The invention belongs to fluorescent nano material and biomedical sector, and in particular to a kind of carbon as antineoplastic Point and its preparation method and application.
Background technology
NO is a kind of extremely unstable Biological Free Radicals, and molecule is small, simple in construction, is gas under normal temperature, is slightly soluble in water, tool Have fat-soluble, be distributed widely in organism in each tissue, it is a kind of new bio messenger molecule.And adjusted in the heart, the cerebrovascular Section, nerve, immunological regulation etc. have highly important biological action.Therefore, by the most attention of people.It is not required to Any intervening mechanism is wanted quickly to be spread by biomembrane, by information transmission caused by a cell to the cell around it In, NO biological action and its study on mechanism are in the ascendant, and its discovery indicates inorganic molecule in medical domain Research Prospects.
In modern biomedical, research finds hydrogen peroxide in tumour cell be present.If it is therefore contemplated that by toward carefully Arginic method is added in born of the same parents, may be implemented in and NO is produced in tumour cell, so as to kill tumour cell.Although however, smart ammonia Acid can discharge NO with hydroperoxidation, but its burst size is not very big, and arginine belongs to large biological molecule, in body Interior to be played a role into the cell by osmosis entrance, inefficient, this also limits its practical application to a certain degree.
The content of the invention
The purpose of the present invention is improved for deficiency existing for existing arginine reaction generation NO technology, will Arginine, which is made carbon point and imparts its fluorescence property, can carry out fluorescence imaging.And after improveing NO yield it is bigger and can be direct Entering cell by endocytosis improves efficiency.
To achieve these goals, the technical solution adopted by the present invention is:A kind of carbon point as antineoplastic, prepare Method comprises the following steps:Using arginine as carbon source, it is completely dissolved with water, adds appropriate ethylenediamine, ultrasonic dissolution, microwave adds Heat produces target product carbon point.
A kind of above-mentioned carbon point as antineoplastic, described arginine are L arginine.
A kind of above-mentioned carbon point as antineoplastic, in molar ratio, ethylenediamine:Arginine=(1:2)-(1:4);It is excellent Choosing, ethylenediamine:Arginine=1:2.
A kind of above-mentioned carbon point as antineoplastic, microwave power 750W, heat time 4min.
Above-mentioned carbon point is alone or is blended in the application prepared in antineoplastic with other antineoplastics.
Carbon point prepared by the present invention with hydrogen peroxide effect in cancer cell by producing NO to kill cancer cell.Carbon point is Using carbon atom as skeleton structure, size is less than 20nm, has the spherical nano particle of fluorescence property.The invention provides one Kind can produce NO carbon point with hydroperoxidation, can be used as antineoplastic.The medicine be one not through transpassivation or Modified carbon point.The fluorescent carbon point can be that it can give birth to the hydroperoxidation in cancer cell as the reason for treating cancer medicine Into NO, and when the NO contents in cancer cell are higher than 1 μM with regard to that can play a part of killing cancer cell.In addition, the carbon point has Fluorescence property can realize the diagnosis and treatment integration to cancer.
The beneficial effects of the invention are as follows:
1st, carbon point prepared by the present invention, particle diameter 1-5nm, and be equally distributed spherical particle, carbon point surface does not pass through Transpassivation or modification, carbon point does not have toxicity, therefore can be used for biomedical sector, is made by itself and hydrogen peroxide in cancer cell Can effective treating cancer with release NO.
2nd, the antineoplastic based on carbon point of the invention not only can with fluorescence imaging, but also with good biocompatibility, The features such as NO burst sizes are more, effect circulation time is long, medicine stability is good.Such as in terms of bio-imaging:This fluorescent carbon point is made With fluorescence imaging and then it can realize that the diagnosis and treatment of cancer are integrated in organism for antineoplastic.In addition, it can also pass through Endocytosis, which enters cells play effect, makes its therapeutic effect more preferable;Its preparation method technique is simple, easily operated, prepares cost It is low, it is easy to spread.
3rd, it is of the invention, arginine is made into carbon point, intracellular Fluorescence imaging can be realized and caused NO amounts are bigger, more Be advantageous to its killing tumor cell.In addition, osmosis effect of the endocytosis of carbon point than arginine in biological cell in itself Rate is higher, and this is also more conducive to the performance of drug effect.Carbon point prepared by the present invention can as antineoplastic in biomedicine should With.
Brief description of the drawings
Fig. 1 is the transmission electron microscope imaging of L-arginine carbon point.
Fig. 2 is fluorescence spectrum of the L-arginine carbon point in a length of 370nm of optimum excitation wave.
Fig. 3 is 24 hours L-arginine carbon points and arginic NO release profiles.
Fig. 4 is the cell experiment result of L-arginine carbon point.
Embodiment
The present invention is further described below by way of non-limiting example.
Embodiment 1
11.5mmol L-arginines are weighed respectively, are separately added into 5.7mmol urea and 5.7mmol ethylenediamines, are dissolved in 15mL In ultra-pure water, after being completely dissolved, the 750W in micro-wave oven, heating is taken out after 4 minutes, respectively obtains L-arginine urea carbon point And L-arginine ethylenediamine carbon point (LACD) (URCD).
URCD and LACD are respectively added in 90mL pH=6.5 PBS cushioning liquid and dissolved.Take 80mL above-mentioned molten respectively again Liquid after solution, it is each to add 100 μ L H2O2.Two systems are measured respectively with Griess reagents reacts releasing for NO in 15 hours solution To one's heart's content condition.As a result it is as shown in table 5.
Table 5
React 15 hours NO burst sizes (μM)
LACD 6.5
URCD 6.3
Table 5 be LACD and URCD respectively with H2O2React the statistical result of 15 hours NO burst sizes.LACD ratios as seen from Table 5 The NO amounts of URCD releases are more.The NO amounts that release measures LACD releases for 15 hours are 6.5 μM, and the NO amounts of URCD releases are 6.3 μM. So preferred ethylenediamine of the present invention.
Embodiment 2
Weigh 2g L-arginines and be dissolved in 15mL with 0.173g, 0.230g, 0.345g, 0.690g, 1.38g ethylenediamine respectively (ratio of the amount of the material of ethylenediamine and L-arginine is respectively 1 in ultra-pure water:4,1:3,1:2,1:1,2:1), in micro-wave oven 750W takes out after heating 4 minutes, obtains the L-arginine carbon point (LACD) of different ratio.
Five kinds of LACD are dissolved in 40mL pH=6.5 PBS cushioning liquid respectively by more than, then respectively take 20mL again, then divide 200 μ L H are not added thereto2O2Reaction 12 hours.It is measured respectively with Griess reagents reacts 12 hours NO burst size, knot Fruit is as shown in table 6.
Table 6
The amount ratio of ethylenediamine and L-arginine material React 12 hours NO burst sizes (μM)
1:4 24.68
1:3 23.46
1:2 28.44
1:1 6.74
2:1 8.28
As seen from Table 6, ethylenediamine and the ratio of the amount of L-arginine material are 1:The NO amounts discharged when 2 are most, and burst size is 28.44μM。
The L-arginine carbon point of embodiment 3
2g (11.5mmol) L-arginine is weighed, 0.345g (5.7mmol), is dissolved in 15mL ultra-pure waters, after being completely dissolved, The 750W in micro-wave oven, heating are taken out after 4 minutes, obtain L-arginine carbon point (LACD).
The L-arginine carbon point (LACD) of preparation is subjected to electron-microscope scanning, as a result as shown in figure 1, it can be seen from figure 1 that preparing L-arginine carbon point (LACD) average grain diameter is 3nm, and is evenly distributed, into equally distributed spheric granules.
The application of the L-arginine carbon point of embodiment 4
The L-arginine carbon point prepared in embodiment 3 is diluted with water near colourless, be fitted into cuvette, with fluorescence light Spectrometer measures the carbon point a length of 370nm of optimum excitation wave, is then that 370nm adjusts carbon dots solution in wavelength with ultraviolet specrophotometer Absorbance to 0.1.Just it is that its is measured at 370nm is glimmering in excitation wavelength with the carbon dots solution of this concentration with sepectrophotofluorometer Light spectrum, it is identical with this that quinine sulfate fluorescence spectrum measures method, as a result as shown in Fig. 2 due to quinine sulfate standard items quantum Yield is 54%, so by integrating as can be seen from Figure 2, the quantum yield of L-arginine carbon point (LACD) is 6.88%.
The L-arginine carbon point extracorporeal simulating experiment of embodiment 5
The L-arginine carbon point (LACD) and L-arginine that are prepared in 0.89g embodiments 3 are respectively added into 80mLpH respectively It is each to add 100 μ L H in=6.5 PBS cushioning liquid2O2, constant temperature stirs at 37 DEG C.Two are measured respectively with Griess reagents NO release conditions in individual system different time solution.As a result it is as shown in Figure 3.
Fig. 3 is reaction generation NO kinetic release curves.The NO amounts that LACD is discharged than L-arginine as seen from Figure 3 are more It is more.The NO amounts that release in vitro measures LACD releases for 24 hours are 13.38 μM, and the NO amounts of L-arginine release are 11.12 μM.
The L-arginine carbon point cell experiment of embodiment 6
Take respectively L-arginine carbon point (LACD) prepared by 0.5,1,10,20,50,100,200mg/mL embodiment 3 and The μ L of L-arginine solution 100 are cultivated 48 hours altogether with BGC823 stomach cancer cells, measure cell survival rate, as a result as shown in Figure 4.From The visible LACD of Fig. 4 have higher lethality to cancer cell than L-arginine.When drug concentration is 20mg/mL, LACD makes cancer thin Born of the same parents' survival rate is reduced to 43.1%, and L-arginine carbon point can make cell survival rate bring up to 148.6% on the contrary.
As fully visible, from the point of view of preparation process, method of the invention, low in raw material price, method is simple and easy, and need not Complicated reaction condition, and carbon point prepared by the present invention can be used for treating cancer.It can not only fluorescence imaging but also Have the characteristics that good biocompatibility, NO burst sizes are more, effect circulation time is long, medicine stability is good, cheap and easy to get.In view of this A little outstanding performances, this New Type of Carbon point are expected to carry out application study in the diagnosis and treatment integration field of cancer.

Claims (6)

1. a kind of carbon point as antineoplastic, it is characterised in that preparation method comprises the following steps:Carbon is used as using arginine Source, it is completely dissolved with water, adds appropriate ethylenediamine, ultrasonic dissolution, microwave, which heats, produces target product carbon point.
2. a kind of carbon point as antineoplastic according to claim 1, it is characterised in that described arginine is L Arginine.
A kind of 3. carbon point as antineoplastic according to claim 1, it is characterised in that in molar ratio, ethylenediamine: Arginine=(1:2)-(1:4).
A kind of 4. carbon point as antineoplastic according to claim 3, it is characterised in that in molar ratio, ethylenediamine: Arginine=1:2.
A kind of 5. carbon point as antineoplastic according to claim 1, it is characterised in that microwave power 750W, Heat time 4min.
6. the carbon point described in claim any one of 1-4 is alone or is blended in and is prepared in antineoplastic with other antineoplastics Application.
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Cited By (5)

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CN110095448A (en) * 2019-06-12 2019-08-06 辽宁大学 A kind of method and its application being overexpressed based on namo fluorescence probe detection epicyte protein
CN112442362A (en) * 2021-01-22 2021-03-05 暨南大学 High-nitric oxide-loading fluorescent carbon dot and preparation method and application thereof
CN112546223A (en) * 2020-12-22 2021-03-26 福州大学 Photocatalyst for treating hypoxia tumor nitric oxide and preparation method thereof
CN113548656A (en) * 2020-06-16 2021-10-26 哈尔滨成程生命与物质研究所 Carbon dots with anticancer bioactivity and preparation method thereof
CN115252596A (en) * 2022-07-27 2022-11-01 辽宁大学 Manganese dioxide modified carbon quantum dot composite nano-microsphere and preparation method and application thereof

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110095448A (en) * 2019-06-12 2019-08-06 辽宁大学 A kind of method and its application being overexpressed based on namo fluorescence probe detection epicyte protein
CN113548656A (en) * 2020-06-16 2021-10-26 哈尔滨成程生命与物质研究所 Carbon dots with anticancer bioactivity and preparation method thereof
CN113548656B (en) * 2020-06-16 2023-02-21 哈尔滨成程生命与物质研究所 Carbon dots with anticancer bioactivity and preparation method thereof
CN112546223A (en) * 2020-12-22 2021-03-26 福州大学 Photocatalyst for treating hypoxia tumor nitric oxide and preparation method thereof
CN112546223B (en) * 2020-12-22 2022-01-18 福州大学 Photocatalyst for treating hypoxia tumor nitric oxide and preparation method thereof
CN112442362A (en) * 2021-01-22 2021-03-05 暨南大学 High-nitric oxide-loading fluorescent carbon dot and preparation method and application thereof
CN115252596A (en) * 2022-07-27 2022-11-01 辽宁大学 Manganese dioxide modified carbon quantum dot composite nano-microsphere and preparation method and application thereof

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