CN117535209A - 左旋短乳杆菌及其在女性生殖道健康中的应用 - Google Patents
左旋短乳杆菌及其在女性生殖道健康中的应用 Download PDFInfo
- Publication number
- CN117535209A CN117535209A CN202410011493.2A CN202410011493A CN117535209A CN 117535209 A CN117535209 A CN 117535209A CN 202410011493 A CN202410011493 A CN 202410011493A CN 117535209 A CN117535209 A CN 117535209A
- Authority
- CN
- China
- Prior art keywords
- lactobacillus
- strain
- brevis
- genital tract
- lbrev
- 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.)
- Granted
Links
- 240000001929 Lactobacillus brevis Species 0.000 title claims abstract description 19
- 235000013957 Lactobacillus brevis Nutrition 0.000 title claims abstract description 18
- 210000005002 female reproductive tract Anatomy 0.000 title claims abstract description 14
- 230000036541 health Effects 0.000 title claims abstract description 12
- 229940039696 lactobacillus Drugs 0.000 claims abstract description 47
- 241000186660 Lactobacillus Species 0.000 claims abstract description 34
- 241000207201 Gardnerella vaginalis Species 0.000 claims abstract description 8
- 238000004321 preservation Methods 0.000 claims abstract description 8
- 239000001963 growth medium Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 14
- 239000004480 active ingredient Substances 0.000 claims description 10
- 238000012258 culturing Methods 0.000 claims description 9
- 239000008194 pharmaceutical composition Substances 0.000 claims description 8
- 235000013305 food Nutrition 0.000 claims description 7
- 241000218492 Lactobacillus crispatus Species 0.000 claims description 6
- 241001561398 Lactobacillus jensenii Species 0.000 claims description 6
- 239000002609 medium Substances 0.000 claims description 6
- 241000186673 Lactobacillus delbrueckii Species 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 241001468157 Lactobacillus johnsonii Species 0.000 claims description 3
- 230000002401 inhibitory effect Effects 0.000 claims description 3
- 238000009472 formulation Methods 0.000 claims description 2
- 239000006872 mrs medium Substances 0.000 claims description 2
- 230000035755 proliferation Effects 0.000 claims description 2
- 239000002417 nutraceutical Substances 0.000 claims 4
- 235000021436 nutraceutical agent Nutrition 0.000 claims 4
- 238000012136 culture method Methods 0.000 claims 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 abstract description 12
- 244000005700 microbiome Species 0.000 abstract description 11
- 108090000623 proteins and genes Proteins 0.000 abstract description 8
- 210000005000 reproductive tract Anatomy 0.000 abstract description 7
- 206010018910 Haemolysis Diseases 0.000 abstract description 6
- 230000008588 hemolysis Effects 0.000 abstract description 6
- 239000004310 lactic acid Substances 0.000 abstract description 6
- 235000014655 lactic acid Nutrition 0.000 abstract description 6
- 206010059866 Drug resistance Diseases 0.000 abstract description 5
- 244000052616 bacterial pathogen Species 0.000 abstract description 5
- 239000000304 virulence factor Substances 0.000 abstract description 5
- 230000007923 virulence factor Effects 0.000 abstract description 5
- 208000007313 Reproductive Tract Infections Diseases 0.000 abstract 1
- 210000004392 genitalia Anatomy 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000001580 bacterial effect Effects 0.000 description 13
- 239000007788 liquid Substances 0.000 description 13
- 210000001215 vagina Anatomy 0.000 description 13
- 239000000843 powder Substances 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- 241000894006 Bacteria Species 0.000 description 10
- 230000004071 biological effect Effects 0.000 description 10
- 230000001954 sterilising effect Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000009835 boiling Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 9
- 238000011282 treatment Methods 0.000 description 9
- 230000005847 immunogenicity Effects 0.000 description 8
- 230000035772 mutation Effects 0.000 description 8
- 239000006041 probiotic Substances 0.000 description 8
- 235000018291 probiotics Nutrition 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 230000001988 toxicity Effects 0.000 description 8
- 231100000419 toxicity Toxicity 0.000 description 8
- 239000012153 distilled water Substances 0.000 description 7
- 238000005303 weighing Methods 0.000 description 7
- QIJRTFXNRTXDIP-UHFFFAOYSA-N (1-carboxy-2-sulfanylethyl)azanium;chloride;hydrate Chemical compound O.Cl.SCC(N)C(O)=O QIJRTFXNRTXDIP-UHFFFAOYSA-N 0.000 description 6
- 229920001817 Agar Polymers 0.000 description 6
- 239000008186 active pharmaceutical agent Substances 0.000 description 6
- 239000008272 agar Substances 0.000 description 6
- 210000004027 cell Anatomy 0.000 description 6
- 229960001305 cysteine hydrochloride Drugs 0.000 description 6
- BTCSSZJGUNDROE-UHFFFAOYSA-N gamma-aminobutyric acid Chemical compound NCCCC(O)=O BTCSSZJGUNDROE-UHFFFAOYSA-N 0.000 description 6
- 244000000010 microbial pathogen Species 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 208000004926 Bacterial Vaginosis Diseases 0.000 description 5
- 238000009631 Broth culture Methods 0.000 description 5
- 201000008100 Vaginitis Diseases 0.000 description 5
- 208000037009 Vaginitis bacterial Diseases 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 239000003937 drug carrier Substances 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 208000032159 Vaginal inflammation Diseases 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000003242 anti bacterial agent Substances 0.000 description 4
- 229940088710 antibiotic agent Drugs 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000002775 capsule Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000000546 pharmaceutical excipient Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- OGNSCSPNOLGXSM-UHFFFAOYSA-N (+/-)-DABA Natural products NCCC(N)C(O)=O OGNSCSPNOLGXSM-UHFFFAOYSA-N 0.000 description 3
- 108020004414 DNA Proteins 0.000 description 3
- 241000207202 Gardnerella Species 0.000 description 3
- 241001465754 Metazoa Species 0.000 description 3
- 206010046914 Vaginal infection Diseases 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229960003692 gamma aminobutyric acid Drugs 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 238000004811 liquid chromatography Methods 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 229960000282 metronidazole Drugs 0.000 description 3
- VAOCPAMSLUNLGC-UHFFFAOYSA-N metronidazole Chemical compound CC1=NC=C([N+]([O-])=O)N1CCO VAOCPAMSLUNLGC-UHFFFAOYSA-N 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 244000052769 pathogen Species 0.000 description 3
- 230000001717 pathogenic effect Effects 0.000 description 3
- 235000018102 proteins Nutrition 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 3
- 108020004465 16S ribosomal RNA Proteins 0.000 description 2
- 108091026890 Coding region Proteins 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 108010001336 Horseradish Peroxidase Proteins 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 241000186606 Lactobacillus gasseri Species 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 239000007853 buffer solution Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229960002227 clindamycin Drugs 0.000 description 2
- KDLRVYVGXIQJDK-AWPVFWJPSA-N clindamycin Chemical compound CN1C[C@H](CCC)C[C@H]1C(=O)N[C@H]([C@H](C)Cl)[C@@H]1[C@H](O)[C@H](O)[C@@H](O)[C@@H](SC)O1 KDLRVYVGXIQJDK-AWPVFWJPSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- -1 coatings Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000002054 inoculum Substances 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011177 media preparation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 210000004877 mucosa Anatomy 0.000 description 2
- 239000002773 nucleotide Substances 0.000 description 2
- 125000003729 nucleotide group Chemical group 0.000 description 2
- 239000013641 positive control Substances 0.000 description 2
- 230000000529 probiotic effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- PKAUICCNAWQPAU-UHFFFAOYSA-N 2-(4-chloro-2-methylphenoxy)acetic acid;n-methylmethanamine Chemical compound CNC.CC1=CC(Cl)=CC=C1OCC(O)=O PKAUICCNAWQPAU-UHFFFAOYSA-N 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- SFAYBQDGCKZKMH-UHFFFAOYSA-N BNCC Chemical compound BNCC SFAYBQDGCKZKMH-UHFFFAOYSA-N 0.000 description 1
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 108020000946 Bacterial DNA Proteins 0.000 description 1
- 241001134770 Bifidobacterium animalis Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- 229930182843 D-Lactic acid Natural products 0.000 description 1
- JVTAAEKCZFNVCJ-UWTATZPHSA-N D-lactic acid Chemical compound C[C@@H](O)C(O)=O JVTAAEKCZFNVCJ-UWTATZPHSA-N 0.000 description 1
- 208000036649 Dysbacteriosis Diseases 0.000 description 1
- 208000027244 Dysbiosis Diseases 0.000 description 1
- 208000004145 Endometritis Diseases 0.000 description 1
- 241000194032 Enterococcus faecalis Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 238000003794 Gram staining Methods 0.000 description 1
- 102000018997 Growth Hormone Human genes 0.000 description 1
- 108010051696 Growth Hormone Proteins 0.000 description 1
- 241000186783 Lactobacillus vaginalis Species 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
- 241000736262 Microbiota Species 0.000 description 1
- 241000219470 Mirabilis Species 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 208000002787 Pregnancy Complications Diseases 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 241000194017 Streptococcus Species 0.000 description 1
- 241000224526 Trichomonas Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000003070 absorption delaying agent Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229940024606 amino acid Drugs 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 125000000539 amino acid group Chemical group 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 210000004381 amniotic fluid Anatomy 0.000 description 1
- 230000003698 anagen phase Effects 0.000 description 1
- 229940124350 antibacterial drug Drugs 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 229940118852 bifidobacterium animalis Drugs 0.000 description 1
- 210000000941 bile Anatomy 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical class [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 description 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Chemical class 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 210000003756 cervix mucus Anatomy 0.000 description 1
- 210000003679 cervix uteri Anatomy 0.000 description 1
- 230000035606 childbirth Effects 0.000 description 1
- 208000035850 clinical syndrome Diseases 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000012050 conventional carrier Substances 0.000 description 1
- 238000012364 cultivation method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000007884 disintegrant Substances 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005782 double-strand break Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000007140 dysbiosis Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229940032049 enterococcus faecalis Drugs 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000013355 food flavoring agent Nutrition 0.000 description 1
- 235000003599 food sweetener Nutrition 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000122 growth hormone Substances 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 230000002949 hemolytic effect Effects 0.000 description 1
- 230000003463 hyperproliferative effect Effects 0.000 description 1
- 210000002865 immune cell Anatomy 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007951 isotonicity adjuster Substances 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 238000009630 liquid culture Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000006166 lysate Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- 239000013642 negative control Substances 0.000 description 1
- 239000002858 neurotransmitter agent Substances 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 239000013588 oral product Substances 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 235000013406 prebiotics Nutrition 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000035935 pregnancy Effects 0.000 description 1
- 208000012113 pregnancy disease Diseases 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000001243 protein synthesis Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000009933 reproductive health Effects 0.000 description 1
- 210000004708 ribosome subunit Anatomy 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 230000005783 single-strand break Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008223 sterile water Substances 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000003765 sweetening agent Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical class [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 229940054541 urex Drugs 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000001018 virulence Effects 0.000 description 1
- 238000012070 whole genome sequencing analysis Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
- C12N1/205—Bacterial isolates
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/135—Bacteria or derivatives thereof, e.g. probiotics
-
- 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
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
- A61P15/02—Drugs for genital or sexual disorders; Contraceptives for disorders of the vagina
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
- C12R2001/225—Lactobacillus
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
- C12R2001/225—Lactobacillus
- C12R2001/24—Lactobacillus brevis
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Genetics & Genomics (AREA)
- Microbiology (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Pharmacology & Pharmacy (AREA)
- Veterinary Medicine (AREA)
- Mycology (AREA)
- Biomedical Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biochemistry (AREA)
- Virology (AREA)
- Tropical Medicine & Parasitology (AREA)
- General Chemical & Material Sciences (AREA)
- Reproductive Health (AREA)
- Molecular Biology (AREA)
- Endocrinology (AREA)
- Gynecology & Obstetrics (AREA)
- Epidemiology (AREA)
- Communicable Diseases (AREA)
- Oncology (AREA)
- Nutrition Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Abstract
本发明属于微生物技术领域,具体涉及一种左旋短乳杆菌及其在女性生殖道健康中的应用。所述菌株如保藏号为CCTCC NO:M 20231490的左旋短乳杆菌(Levilactobacillus brevis)Lbrev‑1,不溶血、无毒力因子和耐药基因,安全性较好,能产乳酸和抑制生殖道致病菌阴道加德纳菌,对调节生殖道pH、改善和缓解生殖道感染具有重要作用。
Description
技术领域
本发明涉及微生物技术领域,具体涉及一种左旋短乳杆菌及其在女性生殖道健康中的应用,特别涉及左旋短乳杆菌(Levilactobacillus brevis)菌株Lbrev-1及其应用。
背景技术
女性的生殖道是开放的腔道,寄居着大量不同种类的微生物,是人体微生物的主要分布区之一,与女性生殖健康关系密切。女性生殖道中约有300多种微生物共生,包括细菌、病毒和真菌等,其中细菌是主要的微生物。它们彼此制约、相互制衡,形成动态平衡,多种阴道炎的发生与阴道微生态环境失衡有关。
生殖道不同部位的微生物组成不同,在健康的育龄妇女中,大多数细菌存在于下生殖道(阴道和子宫颈),上生殖道的细菌至今尚未得到很好的表征。阴道微生物群的微生物多样性较低,以乳杆菌为主。不同地域和种族的健康女性,其优势乳杆菌存在差异性。总体上可将阴道菌群分为五种社区群落(community state types,CST)类型。CST-I以卷曲乳杆菌为主,CST-II以格氏乳杆菌为主,CST-III以惰性乳杆菌为主,CST-V以詹氏乳杆菌为主,而CST-IV无优势乳杆菌群,并可进一步细分为CSTⅣ-A和CSTⅣ-B亚型,其中CSTⅣ-B与细菌性阴道病(Bacterial Vaginosis,以下简称“BV”)联系紧密,以厌氧菌为主, 如奇异杆菌、芬戈尔德菌和加德纳菌。
在疾病状态下,微生物组成和生物量负荷变化很大,多种病原体过度生长。阴道微生态环境进入一个脆弱的状态,不容易抵御致病菌的繁殖、侵犯,出现各种阴道炎症。细菌性阴道病是一种常见的妇科疾病,感染率在15%-52%,是以阴道加德纳菌和其他厌氧菌为主过度繁殖取代乳杆菌,造成阴道内菌群失调而出现的临床症候群的一种阴道感染性疾病。据资料报道,BV是导致组织性绒毛膜炎、羊水感染、剖腹产后子宫内膜炎及其他妊娠不良和妊娠并发症的危险因素。
针对BV,临床治疗方法是采用甲硝唑或克林霉素,甲硝唑是一种前体药,在无氧环境中,细菌胞内酶促还原将甲硝唑的硝基还原成氨基,从而将抗生素转化为活性形式,然后通过与病原体DNA共价结合破坏其螺旋结构并导致单链和双链断裂,进而使病原体DNA降解并死亡;克林霉素能够与细菌核糖体上的50S核糖体亚基结合,阻止肽链的延长,从而抑制细菌细胞的蛋白质合成,导致细菌死亡。采用抗生素治疗虽然见效快,但也存在很大缺陷,有以下两方面:(1)对阴道微环境中所有抗生素敏感微生物均有抑制作用,因此,治疗后阴道微生态没有恢复到一个健康的、能抵御致病菌侵袭的平衡状态,被抑制或杀灭的病原微生物或者外来的病原微生物还会再度繁殖甚至致病而出现复发或新的阴道炎症;(2)微生物产生耐药性、且抗生素无法使得阴道微生态环境平衡,导致了难治性BV。因而,抗生素治疗虽然见效快,但复发率高,3月内复发率高达30%。
阴道微生态失衡的治疗包括杀菌、黏膜修复、恢复阴道微生态平衡三步。杀菌是治疗阴道炎症的第一步,抑制或灭杀病原微生物,包括过度增殖的需氧菌和厌氧菌、芽生孢子或者菌丝、滴虫等。病原微生物被抑制或灭杀后,阴道黏膜的免疫修复和优势乳杆菌的恢复才是治疗阴道炎症的最终目标。在这期间,如果阴道黏膜的修复、乳杆菌的恢复过程被影响、阴道内理化环境未恢复至正常,被抑制的病原微生物或者外来的病原微生物还会再度繁殖甚至致病而出现复发或新的阴道炎症。而益生菌在阴道内可以迅速占据阴道上皮的受体,产生对阴道的保护作用,从而促使阴道恢复至正常微环境,减少阴道炎症的复发。因此,采用益生菌微生态制剂治疗BV是更为优选的一种方式。
目前国内仅有2款阴道微生态药物上市,其中一款活性成分为肠链球菌(Streptococcus faecalis);另一款的活性成分是德氏乳杆菌(Lactobacillus delbrueckii)。此外,还有一些药物管线处于临床开发阶段,如欧赛微科含卷曲乳杆菌Lc262-1的活菌胶囊最近刚完成3期临床试验,四川厌氧生物含4种优势乳杆菌的KAL-001活菌胶囊正处于2期研究中。除了药品外,本领域还出现一些口服益生菌,比如科汉森开发的UREX和ASTARTE,已经被广泛应用在各种女性生殖道健康口服产品中,据报道,其原理是益生菌经口腔-肠道-肛门的途径传播至阴道。
中国专利文件CN102851248A公开了一种用于防治细菌性阴道病的詹氏乳杆菌。中国专利文件CN107794236A公开的一种卷曲乳杆菌及其应用。中国专利文件CN108004187A公开了一种格氏乳杆菌及其用于制备阴道抑菌药物的应用。
由于人体阴道内乳杆菌多样性丰富,不同乳杆菌表现出不同的益生能力,在阴道微环境协同发挥作用。且存在个体差异,不同女性阴道内优势菌株略有区别,因此在选择对应的阴道用乳杆菌益生菌时,需要综合考虑乳杆菌的种类及不同菌种的益生能力。
研究发现育龄健康妇女阴道中存在大量的左旋短乳杆菌。有文献报道,在正常分娩中,新生儿从母亲阴道获得的左旋短乳杆菌有助于保护肠道免受各种胆汁和酸的侵害。还有文献报道左旋短乳杆菌是一种常见的具有产GABA(γ-氨基丁酸)能力的乳杆菌,GABA是一种非蛋白质氨基酸,是哺乳动物中枢神经系统中重要的抑制性神经递质,具有降血压、抗焦虑、保护肾脏、促进生长激素分泌、增强免疫力等生理功能。
但至今未发现有关于左旋短乳杆菌对女性生殖道健康方面的报道。
发明内容
本发明的第一目的在于提供一种左旋短乳杆菌(Levilactobacillus brevis)菌株,所述菌株选自保藏号为CCTCC NO: M 20231490的左旋短乳杆菌Lbrev-1。
在一些具体实施方式中,所述菌株的16S rDNA序列如SEQ ID NO.1所示。
本发明的第二目的在于提供前述左旋短乳杆菌菌株的培养方法,所述方法包括将左旋短乳杆菌菌株接种至培养基,进行增殖培养,得到增殖的左旋短乳杆菌菌株。
在一些具体实施方式中,所述培养基为MRS培养基。
本发明的第三目的在于提供一种食品、保健品或药物组合物,其活性成分含有前述的左旋短乳杆菌菌株或前述培养方法得到的左旋短乳杆菌菌株。
在一些具体实施方式中,所述组合物的活性成分还包括选自卷曲乳杆菌、詹氏乳杆菌、约氏乳杆菌、德氏乳杆菌和格氏乳杆菌中的一种或多种。
在一些具体实施方式中,所述左旋短乳杆菌菌株作为唯一活性成分。
在一些具体实施方式中,所述组合物的单个制剂中含有106~1015 CFU的动物双歧杆菌(Levilactobacillus brevis)菌株。
本发明的第四目的在于提供前述左旋短乳杆菌菌株在制备女性生殖道健康产品中的应用。
在一些具体实施方式中,所述女性生殖道健康产品作为抑菌剂或杀菌剂。
在一些具体实施方式中,所述女性生殖道健康产品用于抑制或杀灭阴道加德纳菌。
在一些具体实施方式中,本发明所述的左旋短乳杆菌Lbrev-1具有以下形态特征:
1、显微镜检为革兰氏阳性,棒状杆菌;
2、在MRS固体培养基中菌落边缘规则,不透明,正面白色,中间凸起,表面光滑湿润。
本发明的左旋短乳杆菌Lbrev-1无毒力因子、无耐药基因,不溶血,具有良好的安全性。且具有产乳酸能力,能够降低pH,抑制致病菌阴道加德纳菌的生长。为开发满足微生物多样性的女性生殖道健康产品提供了选择。
本发明的菌株保藏信息如下:
1、菌株名称:左旋短乳杆菌(Levilactobacillus brevis)Lbrev-1;
2、保藏日期:2023年08月17日;
3、鉴定存活日期:2023年08月24日;
4、保藏单位:中国典型培养物保藏中心(China Center for Type CultureCollection,CCTCC),地址:湖北省武汉市武汉大学,邮编:430072,电话:027-68754052;
5、保藏编号:CCTCC NO: M 20231490。
附图说明
图1为左旋短乳杆菌Lbrev-1菌落形态正面照片。
图2为左旋短乳杆菌Lbrev-1革兰氏染色照片。
具体实施方式
定义与说明
本发明所请求保护的特定保藏编号的左旋短乳杆菌菌株,其涵义包括但不限于:
1、存放于保藏中心的微生物保藏号为CCTCC NO: M 20231490的左旋短乳杆菌(Levilactobacillus brevis)Lbrev-1株;
2、与Lbrev-1株具有相同基因组的左旋短乳杆菌菌株;
3、基于前述1或2的没有突变的传代菌株;
4、基于前述1、2或3的在传代中积累微小突变的,但毒性、免疫原性与生物活性没有实质变化的传代菌株;以及
5、基于前述1-4任一所述菌株的活菌或灭活形式,其可是完整的菌体或裂解物或发酵产物等衍生物。
如本领域所知,菌株经传代应用不可避免会引入微小突变,当突变发生在非编码序列区或者编码区的同义突变或者不影响菌株毒性、免疫原性与生物活性的突变(比如,可能是两个结构域之间的连接氨基酸残基,或者位于蛋白质高级结构内部因不与免疫细胞接触而不影响毒性、免疫原性与生物活性的微小突变的残基),可以合理预期,当这些微小变化没有明显影响后代毒株的毒性、免疫原性与生物活性的情况下,仍然能实现本发明的目的,且其源于本发明贡献的菌株,因此仍在本发明的实质技术贡献范围内。这些微小的突变仍属于非实质性突变,应当视为毒性、免疫原性与生物活性没有变化的突变菌株。
毒性、免疫原性与生物活性没有实质变化,包括担不限于,在检测灵敏度、检测限等检测技术的局限性和可接受或不可避免误差的范围内视为毒性、免疫原性与生物活性是相同的。用细胞、动物等测定Lbrev-1株后代的毒性、免疫原性与生物活性,由于细胞品系、动物品种、年龄、性别、健康状况、培养条件等体现的差别以及可预期或不可避免的系统误差属于没有实质性变化。
本发明所述的组合物含有活性成分Lbrev-1株,以及其他成分,比如不具有生理功效的辅料成分,或者其他功效性成分。功效性成分包括但不限于其他功效菌株,或益生元、后生元成分等。
作为一种较优的方式,本发明的组合物含有其他活性乳杆菌,如选自卷曲乳杆菌、詹氏乳杆菌、约氏乳杆菌、德氏乳杆菌和格氏乳杆菌中的一种或多种。
辅料成分包括添加剂、药物载体和赋型剂。药物载体是指不对受试者引起显著刺激且不消除所施用的益生菌的生物活性及特性的药学载体。药学上可接受的载体可增强或稳定组合物,或可用于促进组合物的制备。药学上可接受的载体可包括溶剂、分散介质、涂层、表面活性剂、抗氧化剂、等渗剂、吸收延迟剂、盐、药物稳定剂、结合剂、赋形剂、崩解剂、润滑剂、甜味剂、调味剂、染料等及其组合,正如本领域技术人员已知的(参见例如Remington's Pharmaceutical Sciences,第18版MackPrinting Company,1990,第1289-1329页)。除非常规载体与活性成分不相容,否则考虑将其用于治疗性或药物组合物中。载体可经选择以使受试者的不利副作用降至最低和/或使活性成分的失活降至最低。
赋型剂是指添加至药物组合物中以使药物具有一定形状或一定浓度的物质。例如无菌水、生理盐水、聚亚烷基二醇(诸如聚乙二醇)、植物油或氢化萘、碳酸氢钙、磷酸钙、多种糖、各种类型淀粉、纤维素衍生物、明胶等。
本发明所述的组合物可以制备成任一种便于使用的形式,例如临床或食品中常见的粉剂、片剂、颗粒剂、凝胶剂、胶囊或液体剂。
本发明所述的组合物以能发挥功效的含量(如治疗有效量)和频率给予使用对象,推荐单次使用剂量中含有106~1015 CFU、107~1013 CFU或107~1012 CFU的左旋短乳杆菌。
本发明中的特定温度参数,如无特殊说明,应理解为恒温处理,并允许在一定温度区间内存在变动。如在±5℃、±4℃、±3℃、±2℃、±1℃的范围内波动。
下面将结合附图对本发明实施例中的技术方案进行清楚、完整地描述。显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例,基于本发明中的实施例,本领域技术人员在没有做出创造性劳动的前提下所获得的所有其它实施例,均应属于本发明保护的范围。
以下实施例中所用到的材料的配制方法或商业渠道如下:
PYG固体培养基制备:称量PYG成品培养基(青岛高科技工业园海博生物技术有限公司,HB0398)粉末36.08 g,琼脂粉15.0 g,溶解至1 L蒸馏水中,加热煮沸,沸腾后加入0.55 g半胱氨酸盐酸盐,调节pH值至6.5,118 ℃高温湿热灭菌20 min,阴凉、避光存放、备用。
MRS肉汤制备:称量MRS成品培养基(Thermo Scientific™ ,CM0359B)粉末52.0g,溶解至1 L蒸馏水中;加热煮沸,凉至室温加入0.55 g半胱氨酸盐酸盐,搅拌溶解后调节pH值至6.5;装上定量分液器并通N2,加热至沸腾,在微沸状态下煮20 min,冷却后分装至10mL厌氧管中,118 ℃高温湿热灭菌20 min,阴凉、避光存放、备用。
MRS固体培养基制备:称量MRS成品培养基(Thermo Scientific™ ,CM0359B)粉末52.0 g,琼脂粉15.0 g,溶解至1 L蒸馏水中,加热煮沸,沸腾后加入0.55 g半胱氨酸盐酸盐,调节pH值至6.5,118 ℃高温湿热灭菌20 min,阴凉、避光存放、备用。
过氧化氢半定量培养基制备:称量MRS成品培养基(Thermo Scientific™CM0359B)粉末52.0 g,琼脂粉15.0 g,溶解至1 L蒸馏水中,调节pH值至6.5,118 ℃高温湿热灭菌20 min,灭菌结束后放入50 ℃水浴锅保温30 min,加入3,3',5,5'-四甲基联苯胺(TMB)(终浓度为0.25 mg/mL)和辣根过氧化物酶(HRP)(终浓度为0.01 mg/mL)混匀;冷却凝固后,放于4℃冰箱待用。
无氧PBS的配制:称量磷酸二氢钾0.27 g,磷酸氢二钠1.42 g,氯化钠8 g,氯化钾0.2 g,溶解至1 L的蒸馏水中,加热煮沸,凉至室温加入0.55 g半胱氨酸盐酸盐,搅拌溶解后调节pH值至6.5,装上定量分液器并通N2,加热至沸腾,在微沸状态下煮30 min,冷却后分装至10 mL厌氧管中,121℃高温湿热灭菌30 min,阴凉、避光存放、备用。
无氧BHI液体培养基配制:称量BHI成品培养基(Thermo Scientific™, CM1135B)粉末37.0 g,溶解至1 L蒸馏水中,加热煮沸,凉至室温加入0.55 g半胱氨酸盐酸盐,搅拌溶解后调节pH值至6.5,装上定量分液器并通N2,加热至沸腾,在微沸状态下煮20 min,冷却和分装过程中通入N2和CO2(1:1比例),分装至10 mL厌氧管中,118 ℃高温湿热灭菌20 min,阴凉、避光存放、备用。
无氧BHI半固体培养基配制:称量BHI成品培养基(Thermo Scientific™ ,CM1135B)粉末37.0 g,溶解至1 L蒸馏水中;加热煮沸,凉至室温加入6 g琼脂粉,0.55 g半胱氨酸盐酸盐,搅拌溶解后调节pH值至6.5,装上定量分液器并通N2,加热至沸腾,在微沸状态下煮20 min,稍稍冷却,冷却和分装过程中通入N2和CO2(1:1比例),及时分装至10 mL厌氧管中,118 ℃高温湿热灭菌20 min,阴凉、避光存放。
实施例1 菌株的分离与鉴定
用阴道棉拭子采集20-40岁中国健康女性的阴道分泌物样品;取2 mL无菌无氧的PBS缓冲液于装有上述棉拭子的厌氧管中,充分震荡混匀,并以其为原液连续十倍梯度稀释;取100 μL稀释10000倍的液体涂布于PYG固体培养基,置于厌氧培养箱中37℃培养48 h后,挑取若干单菌落分别在MRS肉汤培养基中培养24 h,并将培养后得到菌液的一部分转接继续培养,菌液的另一部分进行细菌DNA提取并送至北京擎科生物科技有限公司成都分公司测序,PCR结果经BLAST比对,最终确定5株左旋短乳杆菌(Levilactobacillus brevis),分别命名为Lbrev-1、B2、B3、B4和B5。
取左旋短乳杆菌Lbrev-1菌株PCR验证后菌液划线至MRS固体培养基,37℃厌氧培养24~48 h,其菌落边缘规则,不透明,正面白色,中间凸起,表面光滑湿润,正面照片见图1。
取1环菌落于载玻片,滴加适量无菌ddH2O涂布为稀薄菌液层,载玻片置于酒精灯上加热至水分蒸发,并在火焰快速通过2-3次以固定菌体。随后按照革兰氏染色试剂盒说明书(广东环凯微生物科技有限公司,029010)操作染色。显微镜检观察拍照,菌体染色镜检为革兰氏阳性棒状杆菌,见图2。
实施例2 菌株全基因组及新颖性分析
将左旋短乳杆菌Lbrev-1菌株接种至5 mL的厌氧配置的MRS肉汤中,培养至对数生长后期,提取菌株全基因组DNA,同时进行二代和三代全基因组测序。组装及注释后,将蛋白序列输入毒力基因库Virulence Factor Databases(VFDB)及The ComprehensiveAntibiotic Resistance Database(CARD)分别进行毒力因子和耐药基因分析。结果显示,该菌不具有毒力因子和耐药基因。
利用平均核苷酸相似度(Average Nucleotide Identity,ANI)进行菌株的新颖性分析。通过在Genbank中进行搜索,找到了157个已公开的Levilactobacillus brevis全基因组,通过fastANI(v1.33)比较发现,2个菌株与短乳杆菌Lbrev-1全基因组最相近并低于99.9%,分别为GCA_003813165.1(ANI=99.6548%)和GCA_027692245.1(ANI=99.6103%)。故可认为左旋短乳杆菌Lbrev-1为新菌株,其16S rDNA序列如SEQ ID NO.1所示。
实施例3 低pH生长耐受实验
将保藏的左旋短乳杆菌Lbrev-1菌株在pH值6.5的MRS肉汤活化,37℃过夜培养;将活化菌液按照10%接种量转接至pH值4-5的MRS肉汤培养基中,每2-3 h测量一次OD600值。
结果显示:左旋短乳杆菌Lbrev-1能在低pH环境(pH值4-5)生长,培养结束后培养液的pH值为3.5,具有耐酸产酸的特性。
实施例4 产乳酸试验
左旋短乳杆菌Lbrev-1菌株经活化后,转接至MRS肉汤培养基中,设置2个平行,37℃条件下培养48 h,用pH 0.5-5.0试纸测定并记录培养48 h的乳杆菌菌液的pH值,按以下两个条件选择菌株进行液相色谱。将上清液稀释5倍,加入浓硫酸进行前处理,上样前用0.22 μm针头滤器过滤。液相色谱相关参数如下:
仪器型号:Agilent,分析型液相色谱1200
色谱柱型号:伯乐,Aminex HPX-87H
流动相:0.005 M H2SO4,速度0.6 mL/min
检测器及检测波长:DAD,207 nm;RID,示差折光信号
进样量:20 μL。
结果显示:左旋短乳杆菌Lbrev-1具有产乳酸的特性。
表1 左旋短乳杆菌Lbrev-1产乳酸能力
微生物 | 乳酸含量平均值(mg/L) |
Lbrev-1 | 4228.81 |
实施例5 对氧气的耐受能力
为了说明Lbrev-1的独有特性,本发明还提供了从商品“阴道用乳杆菌活菌胶囊”(“定君生”)中分离的德氏乳杆菌DS在部分试验中做对照说明。
按照10%的接种量,在好氧环境中分别转接Lbrev-1和DS到96孔板分装的好氧的MRS肉汤培养基中,每株菌三个平行,在密封容器中加入除氧袋培养48 h后进行OD600监测。以DS为对照,计作2,比DS耐受性好计作3,比DS耐受性略弱计作1,在含氧培养基(加入除氧袋)生长困难计作0。
结果显示:Lbrev-1与DS氧耐受能力相当,均记为2。说明左旋短乳杆菌Lbrev-1属于兼性厌氧菌,对于左旋短乳杆菌的培养操作不必全程在厌氧环境中进行,培养基的配制也无需严格除氧。
实施例6 溶血实验
将保藏的左旋短乳杆菌接种至5 mL的MRS肉汤培养基中,以粪肠球菌(β溶血,CICC23658,购自至中国工业微生物菌种保藏管理中心)作为阳性对照,以空白培养基作为阴性对照。在MRS肉汤培养基体培养基中37℃厌氧培养12 h,得到活化菌株。取2.5 μL活化菌株接种至哥伦比亚血平板(上海科玛嘉微生物技术有限公司)上,每组设置3 个平行。于37℃厌氧培养48 h后进行观察。
结果显示:阳性对照菌株菌落周围形成界限明显、完全透明的溶血环,为β溶血。左旋短乳杆菌Lbrev-1菌落周围的培养基没有变化,为γ溶血,即不溶血,说明左旋短乳杆菌Lbrev-1比较安全。
实施例7 抑制阴道加德纳菌试验
菌株经活化后,取0.1 mL菌液与MRS固体培养基混匀,倾注入6 cm平皿内,完全凝固后37 ℃培养48 h,取出平皿,用内径6 mm的打孔器在琼脂培养基上打孔,获得菌饼;阴道加德纳菌(购买自北京北纳创联生物技术研究院,BNCC337545)经活化转接后,用无氧无菌PBS缓冲液以10倍梯度,取10-1稀释液0.5 mL含5%马血清的BHI固体培养基混匀,倾注入9 cm平皿内,完全凝固后,将乳酸菌菌饼轻放在BHI琼脂表面,每皿对称放4个菌饼,每株菌2个平行,放入厌氧的密封罐中,加厌氧产气袋,平皿正置培养48 h,用游标卡尺测量抑菌圈大小。
结果显示:左旋短乳杆菌Lbrev-1对阴道加德纳菌具有抑菌作用,且效果优于其他4种同种属菌株。
表2 抑制阴道加德纳菌能力
微生物 | 抑菌圈直径(mm)-平均值 |
Lbrev-1 | 10.09 |
左旋短乳杆菌B2 | 7.82 |
左旋短乳杆菌B3 | 8.78 |
左旋短乳杆菌B4 | 8.98 |
左旋短乳杆菌B5 | 8.95 |
综上所述,左旋短乳杆菌Lbrev-1菌株能耐酸且产乳酸,可适应并能维持生殖道的偏酸性环境;该菌株对氧气还有较好的耐受性,在生产发酵或定殖于生殖道时耐受性较强;对阴道主要致病菌加德纳菌具有很好的抑菌活性,能预防或/和治疗加德纳菌相关的生殖道疾病。
Claims (9)
1.一种左旋短乳杆菌(Levilactobacillus brevis)菌株,所述菌株如保藏号为CCTCCNO: M 20231490的左旋短乳杆菌Lbrev-1所示。
2.如权利要求1所述的左旋短乳杆菌(Levilactobacillus brevis)菌株的培养方法,包括将左旋短乳杆菌菌株接种至培养基,进行增殖培养,得到增殖的左旋短乳杆菌菌株。
3.根据权利要求2所述的培养方法,其特征在于,所述培养基为MRS培养基。
4.一种食品、保健品或药物组合物,其特征在于,其活性成分含有权利要求1所述的左旋短乳杆菌(Levilactobacillus brevis)菌株或权利要求2所述的培养方法得到的左旋短乳杆菌菌株。
5.根据权利要求4所述的食品、保健品或药物组合物,其特征在于,所述组合物的活性成分还包括选自卷曲乳杆菌、詹氏乳杆菌、约氏乳杆菌、德氏乳杆菌和格氏乳杆菌中的一种或多种。
6.根据权利要求4所述的食品、保健品或药物组合物,其特征在于,所述左旋短乳杆菌菌株作为唯一活性成分。
7.根据权利要求4所述的食品、保健品或药物组合物,其特征在于,所述组合物的单个制剂中含有106~1015 CFU的左旋短乳杆菌。
8.权利要求4所述的食品、保健品或药物组合物在制备女性生殖道健康产品中的应用。
9.根据权利要求8所述的应用,其特征在于,所述女性生殖道健康产品用于抑制或杀灭阴道加德纳菌。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202410011493.2A CN117535209B (zh) | 2024-01-04 | 2024-01-04 | 左旋短乳杆菌及其在女性生殖道健康中的应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202410011493.2A CN117535209B (zh) | 2024-01-04 | 2024-01-04 | 左旋短乳杆菌及其在女性生殖道健康中的应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN117535209A true CN117535209A (zh) | 2024-02-09 |
CN117535209B CN117535209B (zh) | 2024-03-29 |
Family
ID=89786475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202410011493.2A Active CN117535209B (zh) | 2024-01-04 | 2024-01-04 | 左旋短乳杆菌及其在女性生殖道健康中的应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN117535209B (zh) |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1357038A (zh) * | 1999-06-21 | 2002-07-03 | Vsl制药有限公司 | 乳酸细菌的组合及其用于预防和/或治疗感染和炎症的用途 |
CN112980980A (zh) * | 2021-04-23 | 2021-06-18 | 江南大学 | 一种用于特异性定量金山醋酸乳杆菌的分子标记和试剂盒以及应用 |
EP3944766A2 (fr) * | 2020-07-31 | 2022-02-02 | Savencia Sa | Produit alimentaire végétal fermenté et son procédé de préparation |
CN114052233A (zh) * | 2020-07-31 | 2022-02-18 | 赛文西亚公司 | 可切片固体 |
CN114437991A (zh) * | 2022-03-02 | 2022-05-06 | 青海省畜牧兽医科学院 | 一种植物乳杆菌160及其应用 |
CN114891659A (zh) * | 2022-03-02 | 2022-08-12 | 西南民族大学 | 一种短乳杆菌248及其应用 |
WO2022184637A1 (en) * | 2021-03-01 | 2022-09-09 | Evonik Operations Gmbh | Preparations comprising probiotic strains and l-tryptophan |
WO2022212716A1 (en) * | 2021-03-31 | 2022-10-06 | Ohio State Innovation Foundation | Lgg-derived peptides and methods of use thereof |
EP4140311A1 (en) * | 2021-08-25 | 2023-03-01 | Technische Universität Berlin | Method to produce a non-kefir grain based synthetic kefir-like fermented product and method for kefir-grain free cultivation of kefir microorganism cultures |
CN115873752A (zh) * | 2022-09-16 | 2023-03-31 | 广东省科学院微生物研究所(广东省微生物分析检测中心) | 具有抗乙型肝炎病毒功能的德氏乳杆菌q80和短乳杆菌sr52-2及其应用 |
WO2023057385A1 (en) * | 2021-10-05 | 2023-04-13 | Dupont Nutrition Biosciences Aps | Effect of a probiotic composition on vaginal lactobacillus species |
US20230129072A1 (en) * | 2021-10-22 | 2023-04-27 | Vaginal Biome Science, Inc. | System, product and method for maintaining the vaginal microbiome |
CN116555074A (zh) * | 2023-03-13 | 2023-08-08 | 广东悦创生物科技有限公司 | 一株短乳杆菌jt1及其在制备降血糖食品药品中的应用 |
-
2024
- 2024-01-04 CN CN202410011493.2A patent/CN117535209B/zh active Active
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1357038A (zh) * | 1999-06-21 | 2002-07-03 | Vsl制药有限公司 | 乳酸细菌的组合及其用于预防和/或治疗感染和炎症的用途 |
CN114052233A (zh) * | 2020-07-31 | 2022-02-18 | 赛文西亚公司 | 可切片固体 |
EP3944766A2 (fr) * | 2020-07-31 | 2022-02-02 | Savencia Sa | Produit alimentaire végétal fermenté et son procédé de préparation |
WO2022184637A1 (en) * | 2021-03-01 | 2022-09-09 | Evonik Operations Gmbh | Preparations comprising probiotic strains and l-tryptophan |
WO2022212716A1 (en) * | 2021-03-31 | 2022-10-06 | Ohio State Innovation Foundation | Lgg-derived peptides and methods of use thereof |
CN112980980A (zh) * | 2021-04-23 | 2021-06-18 | 江南大学 | 一种用于特异性定量金山醋酸乳杆菌的分子标记和试剂盒以及应用 |
EP4140311A1 (en) * | 2021-08-25 | 2023-03-01 | Technische Universität Berlin | Method to produce a non-kefir grain based synthetic kefir-like fermented product and method for kefir-grain free cultivation of kefir microorganism cultures |
WO2023057385A1 (en) * | 2021-10-05 | 2023-04-13 | Dupont Nutrition Biosciences Aps | Effect of a probiotic composition on vaginal lactobacillus species |
US20230129072A1 (en) * | 2021-10-22 | 2023-04-27 | Vaginal Biome Science, Inc. | System, product and method for maintaining the vaginal microbiome |
US20230129935A1 (en) * | 2021-10-22 | 2023-04-27 | Vaginal Biome Science, Inc. | System, product and method for maintaining the vaginal microbiome |
CN114437991A (zh) * | 2022-03-02 | 2022-05-06 | 青海省畜牧兽医科学院 | 一种植物乳杆菌160及其应用 |
CN114891659A (zh) * | 2022-03-02 | 2022-08-12 | 西南民族大学 | 一种短乳杆菌248及其应用 |
CN115873752A (zh) * | 2022-09-16 | 2023-03-31 | 广东省科学院微生物研究所(广东省微生物分析检测中心) | 具有抗乙型肝炎病毒功能的德氏乳杆菌q80和短乳杆菌sr52-2及其应用 |
CN116555074A (zh) * | 2023-03-13 | 2023-08-08 | 广东悦创生物科技有限公司 | 一株短乳杆菌jt1及其在制备降血糖食品药品中的应用 |
Non-Patent Citations (4)
Title |
---|
JULIANA MANDHA 等: "Evaluation of the composition and quality of watermelon and mango juices fermented by Levilactobacillus brevis, Lacticaseibacillus casei and Pediococcus pentosaceus and subsequent simulated digestion and storage", 《INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY》, 29 May 2022 (2022-05-29) * |
UNIV FED MINAS GERAIS 等: "Anti-inflammatory effect of two Lactobacillus strains during infection with Gardnerella vaginalis and Candida albicans in a HeLa cell culture model", 《MICROBIOLOGY》, 15 September 2020 (2020-09-15) * |
于学健;胡海蓉;曹艳花;程坤;辛亮;张哲;姚粟;: "乳杆菌属分类学地位变迁后菌种名称英解汉译检索表(三)", 食品与发酵工业, no. 17, 15 September 2020 (2020-09-15) * |
黄华 主编: "《新编实用临床检验指南 第4版》", 30 June 2021, 汕头大学出版社, pages: 111 * |
Also Published As
Publication number | Publication date |
---|---|
CN117535209B (zh) | 2024-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI652343B (zh) | 一種捲曲乳桿菌(lactobacillus crispatus)及其應用 | |
CN110656060B (zh) | 多联乳杆菌组合物及其在女性阴道健康中的应用 | |
CN107299065B (zh) | 一种植物乳杆菌及其用于制备阴道抑菌药物的应用 | |
CN108004187A (zh) | 一种格氏乳杆菌及其用于制备阴道抑菌药物的应用 | |
CN110777087B (zh) | 一种约氏乳杆菌及其应用 | |
CN110982726B (zh) | 一种卷曲乳杆菌及其应用 | |
US11083761B2 (en) | High potency stable formulations of vaginal Lactobacillus | |
CN107267415B (zh) | 一种罗伊氏乳杆菌及其用于制备阴道抑菌药物的应用 | |
CN108004188A (zh) | 一种鼠李糖乳杆菌及其用于制备阴道抑菌药物的应用 | |
WO2018112741A1 (zh) | 一种嗜酸乳杆菌及其培养方法和应用 | |
CN112708578A (zh) | 一种卷曲乳杆菌及其应用 | |
CN117535209B (zh) | 左旋短乳杆菌及其在女性生殖道健康中的应用 | |
CN116751705A (zh) | 一种具有改善阴道炎症的罗伊氏乳杆菌及其应用 | |
CN117535208B (zh) | 一种卷曲乳杆菌及其在女性生殖道健康中的应用 | |
CN117535206B (zh) | 一种尿路粘液乳杆菌及其应用 | |
CN117511826B (zh) | 尿路粘液乳杆菌及其应用 | |
CN117535207A (zh) | 一种格氏乳杆菌及其应用 | |
CN117402794B (zh) | 一种加氏乳杆菌及其应用 | |
CN117305187B (zh) | 一种改善肠道健康状况的乳酸片球菌及其应用 | |
CN110538201A (zh) | 一种乳杆菌组合物及其用途 | |
CN117286078B (zh) | 一种改善胃肠道健康的植物乳植杆菌及其应用 | |
CN117343880B (zh) | 一种唾液宿主关联乳杆菌及其应用 | |
CN116790402B (zh) | 一株具有抗炎特性的单形拟杆菌菌株、培养方法及应用 | |
CN117683691A (zh) | 一株罗伊氏粘液乳杆菌及其在制备用于防治阴道炎药物中的应用 |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant |