CN116077461A - 一种基于益生菌的肠道内药物递送微胶囊及其制备方法和应用 - Google Patents
一种基于益生菌的肠道内药物递送微胶囊及其制备方法和应用 Download PDFInfo
- Publication number
- CN116077461A CN116077461A CN202211122989.4A CN202211122989A CN116077461A CN 116077461 A CN116077461 A CN 116077461A CN 202211122989 A CN202211122989 A CN 202211122989A CN 116077461 A CN116077461 A CN 116077461A
- Authority
- CN
- China
- Prior art keywords
- probiotics
- dopamine
- drug delivery
- microcapsule
- lipid bilayer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006041 probiotic Substances 0.000 title claims abstract description 48
- 235000018291 probiotics Nutrition 0.000 title claims abstract description 48
- 210000001035 gastrointestinal tract Anatomy 0.000 title claims abstract description 24
- 239000003094 microcapsule Substances 0.000 title claims abstract description 21
- 238000012377 drug delivery Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229960003638 dopamine Drugs 0.000 claims abstract description 30
- 241000894006 Bacteria Species 0.000 claims abstract description 24
- 239000003814 drug Substances 0.000 claims abstract description 8
- 230000000968 intestinal effect Effects 0.000 claims abstract description 5
- 241000186000 Bifidobacterium Species 0.000 claims abstract description 4
- 241000186660 Lactobacillus Species 0.000 claims abstract description 4
- 241000186604 Lactobacillus reuteri Species 0.000 claims abstract description 4
- 241000194036 Lactococcus Species 0.000 claims abstract description 4
- 229940039696 lactobacillus Drugs 0.000 claims abstract description 4
- 229940001882 lactobacillus reuteri Drugs 0.000 claims abstract description 4
- 150000002632 lipids Chemical class 0.000 claims abstract description 3
- GVJHHUAWPYXKBD-UHFFFAOYSA-N (±)-α-Tocopherol Chemical compound OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 claims description 22
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 claims description 22
- 239000000232 Lipid Bilayer Substances 0.000 claims description 20
- 239000007853 buffer solution Substances 0.000 claims description 12
- JLPULHDHAOZNQI-ZTIMHPMXSA-N 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCCCCCC\C=C/C\C=C/CCCCC JLPULHDHAOZNQI-ZTIMHPMXSA-N 0.000 claims description 11
- 229930003427 Vitamin E Natural products 0.000 claims description 11
- 235000012000 cholesterol Nutrition 0.000 claims description 11
- 229940107161 cholesterol Drugs 0.000 claims description 11
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 229940083466 soybean lecithin Drugs 0.000 claims description 11
- 235000019165 vitamin E Nutrition 0.000 claims description 11
- 229940046009 vitamin E Drugs 0.000 claims description 11
- 239000011709 vitamin E Substances 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 10
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000001110 calcium chloride Substances 0.000 claims description 7
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000003960 organic solvent Substances 0.000 claims description 7
- 239000000872 buffer Substances 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- QKNYBSVHEMOAJP-UHFFFAOYSA-N 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydron;chloride Chemical compound Cl.OCC(N)(CO)CO QKNYBSVHEMOAJP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 238000003260 vortexing Methods 0.000 claims description 2
- 201000010099 disease Diseases 0.000 abstract description 6
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 6
- 230000000529 probiotic effect Effects 0.000 abstract description 6
- 229940079593 drug Drugs 0.000 abstract description 3
- 230000003412 degenerative effect Effects 0.000 abstract description 2
- 208000030159 metabolic disease Diseases 0.000 abstract description 2
- 244000005700 microbiome Species 0.000 abstract description 2
- 210000005036 nerve Anatomy 0.000 abstract description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical group ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 8
- 240000006024 Lactobacillus plantarum Species 0.000 description 8
- 235000013965 Lactobacillus plantarum Nutrition 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 229940072205 lactobacillus plantarum Drugs 0.000 description 8
- 239000002502 liposome Substances 0.000 description 5
- 241000186018 Bifidobacterium adolescentis Species 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 241000699670 Mus sp. Species 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004626 scanning electron microscopy Methods 0.000 description 2
- 238000002054 transplantation Methods 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 102000004882 Lipase Human genes 0.000 description 1
- 108090001060 Lipase Proteins 0.000 description 1
- 239000004367 Lipase Substances 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002550 fecal effect Effects 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 210000004211 gastric acid Anatomy 0.000 description 1
- 210000004051 gastric juice Anatomy 0.000 description 1
- 244000005709 gut microbiome Species 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003402 intramolecular cyclocondensation reaction Methods 0.000 description 1
- 235000019421 lipase Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 239000002207 metabolite Substances 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002858 neurotransmitter agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000008055 phosphate buffer solution Substances 0.000 description 1
- 150000003904 phospholipids Chemical class 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000009256 replacement therapy Methods 0.000 description 1
- 150000004666 short chain fatty acids Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/66—Microorganisms or materials therefrom
- A61K35/74—Bacteria
- A61K35/741—Probiotics
- A61K35/744—Lactic acid bacteria, e.g. enterococci, pediococci, lactococci, streptococci or leuconostocs
- A61K35/747—Lactobacilli, e.g. L. acidophilus or L. brevis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/66—Microorganisms or materials therefrom
- A61K35/74—Bacteria
- A61K35/741—Probiotics
- A61K35/744—Lactic acid bacteria, e.g. enterococci, pediococci, lactococci, streptococci or leuconostocs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/66—Microorganisms or materials therefrom
- A61K35/74—Bacteria
- A61K35/741—Probiotics
- A61K35/744—Lactic acid bacteria, e.g. enterococci, pediococci, lactococci, streptococci or leuconostocs
- A61K35/745—Bifidobacteria
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5005—Wall or coating material
- A61K9/5015—Organic compounds, e.g. fats, sugars
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5073—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals having two or more different coatings optionally including drug-containing subcoatings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Mycology (AREA)
- Epidemiology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Neurology (AREA)
- Diabetes (AREA)
- Hematology (AREA)
- Obesity (AREA)
- Biomedical Technology (AREA)
- Medicinal Preparation (AREA)
- Neurosurgery (AREA)
Abstract
本发明提供了一种基于益生菌的肠道内药物递送微胶囊及其制备方法和应用,属于微生物技术领域。将多巴胺和脂质双分子依次包裹益生菌后,得到;所述益生菌包括乳杆菌、乳球菌、双歧杆菌以及罗伊氏菌中的一种或多种。益生菌生物利用率高;作为肠道内共生的益生菌,安全性高;益生菌黏附于肠道内,源源不断产生药物的方式使药物浓度更加恒定;可通过改变益生菌的种类控制不同药物的递送;有望实现在退行性神经性疾病,代谢类疾病等多种疾病中的应用。
Description
技术领域
本发明涉及微生物技术领域,尤其涉及一种基于益生菌的肠道内药物递送微胶囊及其制备方法和应用。
背景技术
益生菌已被广泛用作口服制剂和食品添加剂,它们通过合成和释放神经递质并调节肠道内益生菌的丰度而使宿主受益。它们被认为是多种疾病的替代疗法,具有公认的安全性。然而,由于胃液的强酸和活性酶环境,益生菌将被严重破坏,导致结构损伤和生物活性丧失。因此,到达肠道后,大多数细菌死亡或严重受伤,其代谢能力严重受损,这对于药物的递送效果并不理想。粪菌移植和抗生素治疗可以主要通过提高产生有益代谢产物的细菌的丰度来改善疾病。然而,粪菌移植存在一些问题,例如操作复杂、供体要求严格、来源有限、不稳定以及患者接受度差。使用抗生素可能引发抗生素耐药性和肠道微生物群紊乱等副作用。
发明内容
有鉴于此,本发明的目的在于提供一种基于益生菌的肠道内药物递送微胶囊及其制备方法和应用,采用本发明提供的微胶囊能够实现将益生菌在肠道内递送,不受肠道环境的损伤。
为了实现上述发明目的,本发明提供以下技术方案:
本发明提供了一种基于益生菌的肠道内药物递送微胶囊,将多巴胺和脂质双分子依次包裹益生菌后,得到;
所述益生菌包括乳杆菌、乳球菌、双歧杆菌以及罗伊氏菌中的一种或多种。
优选的,所述脂质双分子的原料包括大豆卵磷脂、胆固醇和维生素E。
优选的,所述大豆卵磷脂、胆固醇和维生素E的质量比为4:2:1。
本发明还提供了上述技术方案所述的肠道内药物递送微胶囊的制备方法,包括以下步骤:
1)将所述益生菌与缓冲液、多巴胺混合,旋涡、离心后,得到多巴胺包裹菌;
2)将所述脂质双分子与步骤1)得到的多巴胺包裹菌、氯化钙混合,旋涡、离心后,得到的沉淀为肠道内药物递送微胶囊。
优选的,所述缓冲液包括Tris-HCl或PBS溶液,所述缓冲液的pH值为5~8。
优选的,所述步骤1)益生菌与缓冲液、多巴胺混合,得到混合物,所述混合物中多巴胺的浓度为0.01~1000mg/ml;
所述混合物中益生菌的数量为1×102~1×108CFU。
优选的,所述步骤1)旋涡的条件包括:先旋涡1~10min,再每10~100min旋涡1~10min,10~1000min后进行洗涤;
所述步骤2)旋涡的时间为10~100min。
优选的,所述步骤2)脂质双分子的制备方法包括:
将所述大豆卵磷脂、胆固醇和维生素E溶于易挥发的有机溶剂中,除去有机溶剂后,与盐缓冲液混合、超声处理,经无菌微孔滤膜过滤,得到的滤液中含有脂质双分子。
本发明提供的微胶囊中的益生菌免受肠道内环境影响的机理为:
选取植物乳杆菌、青春双歧杆菌作为短链脂肪酸药物产生活细胞工厂,具有双层胶囊外衣,第一涂层为多巴胺涂层包裹,多巴胺在碱性溶液中具有氧化自聚合能力的特性能够保证其在益生菌表明的涂层包裹,自聚合后的聚多巴胺含有大量氨基分子内环化形成的DHI结构可以赋予益生菌在肠道内的黏附功能;第二涂层为脂质体双分子层,脂质双分子层通过反向蒸发法合成,然后通过简单的涡旋实现磷脂双分子层重排,从而包裹在益生菌表面,脂质在胃酸中可以保持稳定,到达肠道后才会在脂肪酶的水解下壳层破裂,脂质双分子层赋予益生菌抵抗恶劣微环境的能力,保护益生菌免受胃肠道环境的损伤。
本发明的有效果为:
(1)益生菌生物利用率高;
(2)作为肠道内共生的益生菌,安全性高;
(3)益生菌黏附于肠道内,源源不断产生药物的方式使药物浓度更加恒定;
(4)可通过改变益生菌的种类控制不同药物的递送;
(5)有望实现在退行性神经性疾病,代谢类疾病等多种疾病中的应用。
附图说明
图1为植物乳杆菌的多巴胺涂层包裹图;
图2为植物乳杆菌的脂质双分子层包裹图;
图3为益生菌在肠道内黏附增加图。
具体实施方式
本发明提供了一种基于益生菌的肠道内药物递送微胶囊,将多巴胺和脂质双分子依次包裹益生菌后,得到;所述益生菌包括乳杆菌、乳球菌、双歧杆菌以及罗伊氏菌中的一种或多种。在本发明中,所述益生菌优选为植物乳杆菌和/或青春双歧杆菌。
在本发明中,所述脂质双分子的原料优选包括大豆卵磷脂、胆固醇和维生素E。在本发明中,所述大豆卵磷脂、胆固醇和维生素E的质量比优选为4:2:1。在本发明中,所述脂质双分子的制备方法优选包括:将所述大豆卵磷脂、胆固醇和维生素E溶于易挥发的有机溶剂中,除去有机溶剂后,与盐缓冲液混合、超声处理,经无菌微孔滤膜过滤,得到的滤液中含有脂质双分子。,在本发明中,所述有机溶剂优选为氯仿,本发明优选采用在减压下蒸发除去氯仿。在本发明中,所述盐缓冲液的pH值为5~8。在本发明中,所述超声处理的条件优选包括:时间为5min,功率为500w。
在本发明中,在菌表面形成涂层,因此是单个微胶囊,含有一个菌。
在本发明中,所述肠道内药物递送微胶囊的使用方法优选包括:口服菌的数量为108CFU。
本发明还提供了上述技术方案所述的肠道内药物递送微胶囊的制备方法,包括以下步骤:
1)将所述益生菌与缓冲液、多巴胺混合,旋涡、离心后,得到多巴胺包裹菌;
2)将所述脂质双分子与步骤1)得到的多巴胺包裹菌、氯化钙混合,旋涡、离心后,得到的沉淀为肠道内药物递送微胶囊。
本发明将所述益生菌与缓冲液、多巴胺混合、旋涡,得到多巴胺包裹菌。在本发明中,所述缓冲液优选包括Tris-HCl或PBS溶液,所述缓冲液的pH值优选为5~8。在本发明中,所述益生菌与缓冲液、多巴胺混合,得到混合物,所述混合物中多巴胺的浓度优选为0.01~1000mg/ml,更优选为2mg/ml。在本发明中,所述混合物中益生菌的数量优选为1×102~1×108CFU/ml。
在本发明中,所述步骤1)旋涡的条件优选包括:先旋涡1~10min,再每10~100min旋涡1~10min,10~1000min后进行洗涤。在本发明中,所述步骤2)旋涡的时间优选为10~100min。
本发明将所述脂质双分子与得到的多巴胺包裹菌、氯化钙混合,旋涡、离心后,得到的沉淀为肠道内药物递送微胶囊。在本发明中,所述脂质双分子优选以滤液形式与多巴胺包裹菌、氯化钙混合。在本发明中,所述氯化钙优选以氯化钙溶液的形式与多巴胺包裹菌、脂质双分子混合,所述氯化钙溶液的浓度为12.5mM。在本发明中,所述滤液的体积与多巴胺包裹菌的数量、氯化钙溶液的体积比优选为1ml:1×108CFU:200μl。
为了进一步说明本发明,下面结合实例对本发明进行详细地描述,但不能将它们理解为对本发明保护范围的限定。
实施例1
(1)多巴胺涂层的包裹
选取植物乳杆菌或青春双歧杆菌传代培养溶液(1×108CFU/ml),860g离心后加入1ml Tris-HCl(Ph=6.8)溶液,然后加入多巴胺,多巴胺终浓度为2mg/ml,涡旋5min,每半小时涡旋5min,2h后洗涤细菌,去除未包裹的多巴胺。通过扫描电子显微镜观察细菌表面,结果见图1,为植物乳杆菌的结果。
(2)脂质双分子层的包裹
称取大豆卵磷脂、胆固醇、维生素E按质量比例4:2:1,置于氯仿溶剂中,室温搅拌至混合物完全溶解。将溶液转移到圆底烧瓶中,并在减压下蒸发以除去氯仿。将磷酸盐缓冲溶液加入烧瓶中并超声处理5分钟。空白脂质体通过用0.22μm无菌微孔膜过滤溶液而获得。取步骤(1)中多巴胺包裹细菌,并在860g下离心。将沉淀物溶(菌数量为1×108CFU)解在1mL空白脂质体溶液中加入。200μL氯化钙(12.5mM),涡旋15分钟。通过扫描电子显微镜观察细菌表面,结果见图2,为植物乳杆菌的结果。
实施例2
给小鼠口服上述制备的益生菌(植物乳杆菌)微胶囊,菌数量为108CFU,6h后解剖小鼠,分离肠道,通过小动物成像观察益生菌的黏附。可以看到,包裹后的菌在肠道内荧光信号增强,表明更多的菌黏附于肠道,包裹方法提高了菌在肠道内的粘附性,结果见图3。
以上所述仅是本发明的优选实施方式,并非对本发明作任何形式上的限制。应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (8)
1.一种基于益生菌的肠道内药物递送微胶囊,其特征在于,将多巴胺和脂质双分子依次包裹益生菌后,得到;
所述益生菌包括乳杆菌、乳球菌、双歧杆菌以及罗伊氏菌中的一种或多种。
2.根据权利要求1所述的肠道内药物递送微胶囊,其特征在于,所述脂质双分子的原料包括大豆卵磷脂、胆固醇和维生素E。
3.根据权利要求2所述的肠道内药物递送微胶囊,其特征在于,所述大豆卵磷脂、胆固醇和维生素E的质量比为4:2:1。
4.权利要求1~3任一项所述的肠道内药物递送微胶囊的制备方法,其特征在于,包括以下步骤:
1)将所述益生菌与缓冲液、多巴胺混合,旋涡、离心后,得到多巴胺包裹菌;
2)将所述脂质双分子与步骤1)得到的多巴胺包裹菌、氯化钙混合,旋涡、离心后,得到的沉淀为肠道内药物递送微胶囊。
5.根据权利要求4所述的制备方法,其特征在于,所述缓冲液包括Tris-HCl或PBS溶液,所述缓冲液的pH值为5~8。
6.根据权利要求4所述的制备方法,其特征在于,所述步骤1)益生菌与缓冲液、多巴胺混合,得到混合物,所述混合物中多巴胺的浓度为0.01~1000mg/ml;
所述混合物中益生菌的数量为1×102~1×108CFU/ml。
7.根据权利要求4所述的制备方法,其特征在于,所述步骤1)旋涡的条件包括:先旋涡1~10min,再每10~100min旋涡1~10min,10~1000min后进行洗涤;
所述步骤2)旋涡的时间为10~100min。
8.根据权利要求4所述的制备方法,其特征在于,所述步骤2)脂质双分子的制备方法包括:
将所述大豆卵磷脂、胆固醇和维生素E溶于易挥发的有机溶剂中,除去有机溶剂后,与缓冲液混合、超声处理,经无菌微孔滤膜过滤,得到的滤液中含有脂质双分子。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211122989.4A CN116077461A (zh) | 2022-09-15 | 2022-09-15 | 一种基于益生菌的肠道内药物递送微胶囊及其制备方法和应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211122989.4A CN116077461A (zh) | 2022-09-15 | 2022-09-15 | 一种基于益生菌的肠道内药物递送微胶囊及其制备方法和应用 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN116077461A true CN116077461A (zh) | 2023-05-09 |
Family
ID=86208920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202211122989.4A Pending CN116077461A (zh) | 2022-09-15 | 2022-09-15 | 一种基于益生菌的肠道内药物递送微胶囊及其制备方法和应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN116077461A (zh) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113559129A (zh) * | 2021-08-18 | 2021-10-29 | 唐颐控股(深圳)有限公司 | 通过细菌治疗帕金森病的纳米装甲防护单细胞制品及其制备方法 |
CN114181847A (zh) * | 2021-10-29 | 2022-03-15 | 上海交通大学医学院附属仁济医院 | 一种表面被生物活性药物修饰的细菌及其应用 |
-
2022
- 2022-09-15 CN CN202211122989.4A patent/CN116077461A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113559129A (zh) * | 2021-08-18 | 2021-10-29 | 唐颐控股(深圳)有限公司 | 通过细菌治疗帕金森病的纳米装甲防护单细胞制品及其制备方法 |
CN114181847A (zh) * | 2021-10-29 | 2022-03-15 | 上海交通大学医学院附属仁济医院 | 一种表面被生物活性药物修饰的细菌及其应用 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101902035B1 (ko) | 산성 분해로부터 미생물 세포의 보호 | |
Rao et al. | Survival of microencapsulated Bifidobacterium pseudolongum in simulated gastric and intestinal juices | |
Prakash et al. | Artificial cell therapy: New strategies for the therapeutic delivery of live bacteria | |
EP0753303B1 (en) | Use of a physiologically functional food for improving and/or enhancing brain function, learning ability and memory functions | |
CN100386427C (zh) | 双歧杆菌和含有它们的制品 | |
CN113559129B (zh) | 通过细菌治疗帕金森病的纳米装甲防护单细胞制品及其制备方法 | |
Lin et al. | In vitro and in vivo characterization of alginate-chitosan-alginate artificial microcapsules for therapeutic oral delivery of live bacterial cells | |
AU2012210575A1 (en) | Protection of microbial cells from acidic degradation | |
CN113230280B (zh) | 一种结肠靶向的益生菌多层包埋微胶囊及其制备方法与应用 | |
US20170304374A1 (en) | Capsule for the oral administration of biopharmaceuticals | |
CN106974262A (zh) | 肠道益生杆菌在治疗和预防肥胖及其相关疾病中的应用 | |
WO2022266840A1 (zh) | 益生菌微胶囊及其制备方法和用途 | |
Li et al. | Intestinal delivery of probiotics: Materials, strategies, and applications | |
CN113892650B (zh) | 一种益生菌脂质体及其制备方法 | |
CN116077461A (zh) | 一种基于益生菌的肠道内药物递送微胶囊及其制备方法和应用 | |
CN111529511B (zh) | 一种益生菌微胶囊及其制备方法与应用 | |
CN113230284A (zh) | 一种基于多维交联的合生素微囊化制剂及其制备方法和应用 | |
CN116270523B (zh) | 一种耐酸的口服双层胶囊及其制备方法 | |
WO2022160540A1 (zh) | 一种益生菌微囊及其制备方法 | |
CN100402042C (zh) | 增强肾功能的组合物及方法 | |
CN114747769A (zh) | 一种益生菌制品及其制备方法 | |
US20180185297A1 (en) | Serum Specific Drug Transport System | |
KR102289556B1 (ko) | 이산화 타이타늄 다공성 비드에 유산균이 함침된 유산균-비드 복합체 및 이의 제조 방법 | |
Bu et al. | Encapsulation method of probiotic embedded delivery system and its application in food | |
CN116270529A (zh) | 一种靶向治疗幽门螺杆菌的类人体纳米微囊制剂及其制备方法和应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |