CN116200343A - 一种高效合成多巴胺的骨髓间充质干细胞及其制备方法和用途 - Google Patents
一种高效合成多巴胺的骨髓间充质干细胞及其制备方法和用途 Download PDFInfo
- Publication number
- CN116200343A CN116200343A CN202310191162.7A CN202310191162A CN116200343A CN 116200343 A CN116200343 A CN 116200343A CN 202310191162 A CN202310191162 A CN 202310191162A CN 116200343 A CN116200343 A CN 116200343A
- Authority
- CN
- China
- Prior art keywords
- mesenchymal stem
- ddc
- gch1
- bone marrow
- cells
- 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
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 229960003638 dopamine Drugs 0.000 title claims abstract description 53
- 210000002901 mesenchymal stem cell Anatomy 0.000 title claims abstract description 32
- 210000001185 bone marrow Anatomy 0.000 title claims abstract description 21
- 230000002194 synthesizing effect Effects 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- QZAYGJVTTNCVMB-UHFFFAOYSA-N serotonin Chemical compound C1=C(O)C=C2C(CCN)=CNC2=C1 QZAYGJVTTNCVMB-UHFFFAOYSA-N 0.000 claims abstract description 46
- 210000004556 brain Anatomy 0.000 claims abstract description 32
- 101000862581 Homo sapiens GTP cyclohydrolase 1 Proteins 0.000 claims abstract description 23
- 230000004770 neurodegeneration Effects 0.000 claims abstract description 10
- 208000015122 neurodegenerative disease Diseases 0.000 claims abstract description 10
- 210000004027 cell Anatomy 0.000 claims description 62
- 239000013598 vector Substances 0.000 claims description 30
- 108090000623 proteins and genes Proteins 0.000 claims description 27
- 208000018737 Parkinson disease Diseases 0.000 claims description 20
- 241000700605 Viruses Species 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 241000713666 Lentivirus Species 0.000 claims description 14
- 239000013612 plasmid Substances 0.000 claims description 14
- 102100027346 GTP cyclohydrolase 1 Human genes 0.000 claims description 13
- 208000015181 infectious disease Diseases 0.000 claims description 13
- 108020004414 DNA Proteins 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 8
- 208000012902 Nervous system disease Diseases 0.000 claims description 7
- 101150076211 TH gene Proteins 0.000 claims description 7
- 230000004927 fusion Effects 0.000 claims description 7
- 238000001890 transfection Methods 0.000 claims description 6
- 239000003814 drug Substances 0.000 claims description 4
- 229920000209 Hexadimethrine bromide Polymers 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 150000003384 small molecules Chemical class 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims description 2
- 102000053602 DNA Human genes 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 210000000130 stem cell Anatomy 0.000 abstract description 7
- 208000027089 Parkinsonian disease Diseases 0.000 abstract description 6
- 206010034010 Parkinsonism Diseases 0.000 abstract description 6
- 208000024827 Alzheimer disease Diseases 0.000 abstract description 5
- 210000002966 serum Anatomy 0.000 abstract description 4
- 208000012661 Dyskinesia Diseases 0.000 abstract description 2
- 238000011476 stem cell transplantation Methods 0.000 abstract description 2
- 210000004271 bone marrow stromal cell Anatomy 0.000 description 43
- 241000700159 Rattus Species 0.000 description 38
- 239000002609 medium Substances 0.000 description 18
- 230000014509 gene expression Effects 0.000 description 16
- 239000012634 fragment Substances 0.000 description 14
- 210000002569 neuron Anatomy 0.000 description 14
- 238000001514 detection method Methods 0.000 description 13
- 238000002054 transplantation Methods 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 12
- RXWNCPJZOCPEPQ-NVWDDTSBSA-N puromycin Chemical compound C1=CC(OC)=CC=C1C[C@H](N)C(=O)N[C@H]1[C@@H](O)[C@H](N2C3=NC=NC(=C3N=C2)N(C)C)O[C@@H]1CO RXWNCPJZOCPEPQ-NVWDDTSBSA-N 0.000 description 12
- 238000010276 construction Methods 0.000 description 10
- 108090000790 Enzymes Proteins 0.000 description 9
- 238000004128 high performance liquid chromatography Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 102000004190 Enzymes Human genes 0.000 description 8
- 210000005013 brain tissue Anatomy 0.000 description 8
- 229940088598 enzyme Drugs 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 8
- 239000001963 growth medium Substances 0.000 description 8
- 230000002757 inflammatory effect Effects 0.000 description 8
- 239000006228 supernatant Substances 0.000 description 8
- 238000002965 ELISA Methods 0.000 description 7
- VMWNQDUVQKEIOC-CYBMUJFWSA-N apomorphine Chemical compound C([C@H]1N(C)CC2)C3=CC=C(O)C(O)=C3C3=C1C2=CC=C3 VMWNQDUVQKEIOC-CYBMUJFWSA-N 0.000 description 7
- 229960004046 apomorphine Drugs 0.000 description 7
- 230000005012 migration Effects 0.000 description 7
- 238000013508 migration Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 230000004069 differentiation Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 6
- 229950010131 puromycin Drugs 0.000 description 6
- 230000008439 repair process Effects 0.000 description 6
- 108091008146 restriction endonucleases Proteins 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000012228 culture supernatant Substances 0.000 description 5
- LOKCTEFSRHRXRJ-UHFFFAOYSA-I dipotassium trisodium dihydrogen phosphate hydrogen phosphate dichloride Chemical compound P(=O)(O)(O)[O-].[K+].P(=O)(O)([O-])[O-].[Na+].[Na+].[Cl-].[K+].[Cl-].[Na+] LOKCTEFSRHRXRJ-UHFFFAOYSA-I 0.000 description 5
- 238000001727 in vivo Methods 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 230000001537 neural effect Effects 0.000 description 5
- 239000002858 neurotransmitter agent Substances 0.000 description 5
- 239000002773 nucleotide Substances 0.000 description 5
- 125000003729 nucleotide group Chemical group 0.000 description 5
- 239000002953 phosphate buffered saline Substances 0.000 description 5
- 238000012216 screening Methods 0.000 description 5
- 208000024891 symptom Diseases 0.000 description 5
- 102100022464 5'-nucleotidase Human genes 0.000 description 4
- 102100032912 CD44 antigen Human genes 0.000 description 4
- XKMLYUALXHKNFT-UUOKFMHZSA-N Guanosine-5'-triphosphate Chemical compound C1=2NC(N)=NC(=O)C=2N=CN1[C@@H]1O[C@H](COP(O)(=O)OP(O)(=O)OP(O)(O)=O)[C@@H](O)[C@H]1O XKMLYUALXHKNFT-UUOKFMHZSA-N 0.000 description 4
- 102100031573 Hematopoietic progenitor cell antigen CD34 Human genes 0.000 description 4
- 101000678236 Homo sapiens 5'-nucleotidase Proteins 0.000 description 4
- 101000868273 Homo sapiens CD44 antigen Proteins 0.000 description 4
- 101000777663 Homo sapiens Hematopoietic progenitor cell antigen CD34 Proteins 0.000 description 4
- 101000935043 Homo sapiens Integrin beta-1 Proteins 0.000 description 4
- 101000738771 Homo sapiens Receptor-type tyrosine-protein phosphatase C Proteins 0.000 description 4
- 101000800116 Homo sapiens Thy-1 membrane glycoprotein Proteins 0.000 description 4
- 102100025304 Integrin beta-1 Human genes 0.000 description 4
- 108091034057 RNA (poly(A)) Proteins 0.000 description 4
- 102100037422 Receptor-type tyrosine-protein phosphatase C Human genes 0.000 description 4
- 102100033523 Thy-1 membrane glycoprotein Human genes 0.000 description 4
- 108091000117 Tyrosine 3-Monooxygenase Proteins 0.000 description 4
- 102000048218 Tyrosine 3-monooxygenases Human genes 0.000 description 4
- 238000000246 agarose gel electrophoresis Methods 0.000 description 4
- 101150073130 ampR gene Proteins 0.000 description 4
- 230000003321 amplification Effects 0.000 description 4
- 210000001130 astrocyte Anatomy 0.000 description 4
- 229930189065 blasticidin Natural products 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 210000005064 dopaminergic neuron Anatomy 0.000 description 4
- 239000012091 fetal bovine serum Substances 0.000 description 4
- BTCSSZJGUNDROE-UHFFFAOYSA-N gamma-aminobutyric acid Chemical group NCCCC(O)=O BTCSSZJGUNDROE-UHFFFAOYSA-N 0.000 description 4
- 230000003394 haemopoietic effect Effects 0.000 description 4
- 238000010166 immunofluorescence Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003550 marker Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- WEXRUCMBJFQVBZ-UHFFFAOYSA-N pentobarbital Chemical compound CCCC(C)C1(CC)C(=O)NC(=O)NC1=O WEXRUCMBJFQVBZ-UHFFFAOYSA-N 0.000 description 4
- 238000003757 reverse transcription PCR Methods 0.000 description 4
- 108090000489 Carboxy-Lyases Proteins 0.000 description 3
- 108090001005 Interleukin-6 Proteins 0.000 description 3
- WTDRDQBEARUVNC-LURJTMIESA-N L-DOPA Chemical compound OC(=O)[C@@H](N)CC1=CC=C(O)C(O)=C1 WTDRDQBEARUVNC-LURJTMIESA-N 0.000 description 3
- WTDRDQBEARUVNC-UHFFFAOYSA-N L-Dopa Natural products OC(=O)C(N)CC1=CC=C(O)C(O)=C1 WTDRDQBEARUVNC-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 101100228519 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) gch-1 gene Proteins 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 238000000137 annealing Methods 0.000 description 3
- 230000003110 anti-inflammatory effect Effects 0.000 description 3
- 238000003556 assay Methods 0.000 description 3
- 230000006399 behavior Effects 0.000 description 3
- 230000003115 biocidal effect Effects 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 238000004113 cell culture Methods 0.000 description 3
- 239000006285 cell suspension Substances 0.000 description 3
- 210000004748 cultured cell Anatomy 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229960003692 gamma aminobutyric acid Drugs 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 229960004502 levodopa Drugs 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 210000001259 mesencephalon Anatomy 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 229920001184 polypeptide Polymers 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 102000004196 processed proteins & peptides Human genes 0.000 description 3
- 108090000765 processed proteins & peptides Proteins 0.000 description 3
- 230000000770 proinflammatory effect Effects 0.000 description 3
- 238000012163 sequencing technique Methods 0.000 description 3
- 210000000225 synapse Anatomy 0.000 description 3
- GOZMBJCYMQQACI-UHFFFAOYSA-N 6,7-dimethyl-3-[[methyl-[2-[methyl-[[1-[3-(trifluoromethyl)phenyl]indol-3-yl]methyl]amino]ethyl]amino]methyl]chromen-4-one;dihydrochloride Chemical compound Cl.Cl.C=1OC2=CC(C)=C(C)C=C2C(=O)C=1CN(C)CCN(C)CC(C1=CC=CC=C11)=CN1C1=CC=CC(C(F)(F)F)=C1 GOZMBJCYMQQACI-UHFFFAOYSA-N 0.000 description 2
- 102000038594 Cdh1/Fizzy-related Human genes 0.000 description 2
- 108091007854 Cdh1/Fizzy-related Proteins 0.000 description 2
- 102100033601 Collagen alpha-1(I) chain Human genes 0.000 description 2
- 108090000695 Cytokines Proteins 0.000 description 2
- 102000004127 Cytokines Human genes 0.000 description 2
- 102000047174 Disks Large Homolog 4 Human genes 0.000 description 2
- 108700019745 Disks Large Homolog 4 Proteins 0.000 description 2
- 239000006144 Dulbecco’s modified Eagle's medium Substances 0.000 description 2
- 102000003974 Fibroblast growth factor 2 Human genes 0.000 description 2
- 108090000379 Fibroblast growth factor 2 Proteins 0.000 description 2
- 101150004665 GCH1 gene Proteins 0.000 description 2
- 102100039289 Glial fibrillary acidic protein Human genes 0.000 description 2
- 101710193519 Glial fibrillary acidic protein Proteins 0.000 description 2
- 101001133056 Homo sapiens Mucin-1 Proteins 0.000 description 2
- 101000687905 Homo sapiens Transcription factor SOX-2 Proteins 0.000 description 2
- 241000725303 Human immunodeficiency virus Species 0.000 description 2
- 241000713772 Human immunodeficiency virus 1 Species 0.000 description 2
- OUYCCCASQSFEME-QMMMGPOBSA-N L-tyrosine Chemical compound OC(=O)[C@@H](N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-QMMMGPOBSA-N 0.000 description 2
- 102100034256 Mucin-1 Human genes 0.000 description 2
- 208000025966 Neurological disease Diseases 0.000 description 2
- 238000012408 PCR amplification Methods 0.000 description 2
- 108010019160 Pancreatin Proteins 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 2
- 108010076504 Protein Sorting Signals Proteins 0.000 description 2
- 238000011529 RT qPCR Methods 0.000 description 2
- 102000007460 S100 Calcium-Binding Protein A4 Human genes 0.000 description 2
- 108010085149 S100 Calcium-Binding Protein A4 Proteins 0.000 description 2
- 102100024270 Transcription factor SOX-2 Human genes 0.000 description 2
- 230000001464 adherent effect Effects 0.000 description 2
- 108010029483 alpha 1 Chain Collagen Type I Proteins 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 229960000723 ampicillin Drugs 0.000 description 2
- AVKUERGKIZMTKX-NJBDSQKTSA-N ampicillin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@H]3SC([C@@H](N3C2=O)C(O)=O)(C)C)=CC=CC=C1 AVKUERGKIZMTKX-NJBDSQKTSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000003542 behavioural effect Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 239000013065 commercial product Substances 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 101150102279 ddc gene Proteins 0.000 description 2
- 230000034994 death Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 101150069842 dlg4 gene Proteins 0.000 description 2
- 210000002919 epithelial cell Anatomy 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000000684 flow cytometry Methods 0.000 description 2
- 239000012737 fresh medium Substances 0.000 description 2
- 238000001415 gene therapy Methods 0.000 description 2
- 210000005046 glial fibrillary acidic protein Anatomy 0.000 description 2
- 210000001905 globus pallidus Anatomy 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 238000003125 immunofluorescent labeling Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007928 intraperitoneal injection Substances 0.000 description 2
- 238000001638 lipofection Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 210000005036 nerve Anatomy 0.000 description 2
- 229940055695 pancreatin Drugs 0.000 description 2
- 229920002866 paraformaldehyde Polymers 0.000 description 2
- 230000008506 pathogenesis Effects 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 229960001412 pentobarbital Drugs 0.000 description 2
- 230000001124 posttranscriptional effect Effects 0.000 description 2
- 210000004129 prosencephalon Anatomy 0.000 description 2
- 238000003762 quantitative reverse transcription PCR Methods 0.000 description 2
- 108010054624 red fluorescent protein Proteins 0.000 description 2
- 230000010076 replication Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- FNKQXYHWGSIFBK-RPDRRWSUSA-N sapropterin Chemical compound N1=C(N)NC(=O)C2=C1NC[C@H]([C@@H](O)[C@@H](O)C)N2 FNKQXYHWGSIFBK-RPDRRWSUSA-N 0.000 description 2
- 230000003248 secreting effect Effects 0.000 description 2
- 230000028327 secretion Effects 0.000 description 2
- 229940076279 serotonin Drugs 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 210000004281 subthalamic nucleus Anatomy 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000013603 viral vector Substances 0.000 description 2
- 230000003612 virological effect Effects 0.000 description 2
- 238000001262 western blot Methods 0.000 description 2
- OGNSCSPNOLGXSM-UHFFFAOYSA-N (+/-)-DABA Natural products NCCC(N)C(O)=O OGNSCSPNOLGXSM-UHFFFAOYSA-N 0.000 description 1
- MZOFCQQQCNRIBI-VMXHOPILSA-N (3s)-4-[[(2s)-1-[[(2s)-1-[[(1s)-1-carboxy-2-hydroxyethyl]amino]-4-methyl-1-oxopentan-2-yl]amino]-5-(diaminomethylideneamino)-1-oxopentan-2-yl]amino]-3-[[2-[[(2s)-2,6-diaminohexanoyl]amino]acetyl]amino]-4-oxobutanoic acid Chemical compound OC[C@@H](C(O)=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@@H](N)CCCCN MZOFCQQQCNRIBI-VMXHOPILSA-N 0.000 description 1
- FWBHETKCLVMNFS-UHFFFAOYSA-N 4',6-Diamino-2-phenylindol Chemical compound C1=CC(C(=N)N)=CC=C1C1=CC2=CC=C(C(N)=N)C=C2N1 FWBHETKCLVMNFS-UHFFFAOYSA-N 0.000 description 1
- 210000002348 5-ht neuron Anatomy 0.000 description 1
- HJCMDXDYPOUFDY-WHFBIAKZSA-N Ala-Gln Chemical compound C[C@H](N)C(=O)N[C@H](C(O)=O)CCC(N)=O HJCMDXDYPOUFDY-WHFBIAKZSA-N 0.000 description 1
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 208000000103 Anorexia Nervosa Diseases 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 108091003079 Bovine Serum Albumin Proteins 0.000 description 1
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 1
- 102000004144 Green Fluorescent Proteins Human genes 0.000 description 1
- 101000884046 Homo sapiens Aromatic-L-amino-acid decarboxylase Proteins 0.000 description 1
- 101000606113 Homo sapiens Tyrosine 3-monooxygenase Proteins 0.000 description 1
- ZDXPYRJPNDTMRX-VKHMYHEASA-N L-glutamine Chemical compound OC(=O)[C@@H](N)CCC(N)=O ZDXPYRJPNDTMRX-VKHMYHEASA-N 0.000 description 1
- 229930182816 L-glutamine Natural products 0.000 description 1
- 241000078511 Microtome Species 0.000 description 1
- 208000019695 Migraine disease Diseases 0.000 description 1
- 208000006670 Multiple fractures Diseases 0.000 description 1
- 108091028043 Nucleic acid sequence Proteins 0.000 description 1
- 229930182555 Penicillin Natural products 0.000 description 1
- JGSARLDLIJGVTE-MBNYWOFBSA-N Penicillin G Chemical compound N([C@H]1[C@H]2SC([C@@H](N2C1=O)C(O)=O)(C)C)C(=O)CC1=CC=CC=C1 JGSARLDLIJGVTE-MBNYWOFBSA-N 0.000 description 1
- 208000006735 Periostitis Diseases 0.000 description 1
- 101000702488 Rattus norvegicus High affinity cationic amino acid transporter 1 Proteins 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 102000001435 Synapsin Human genes 0.000 description 1
- 108050009621 Synapsin Proteins 0.000 description 1
- 206010043276 Teratoma Diseases 0.000 description 1
- 108060008682 Tumor Necrosis Factor Proteins 0.000 description 1
- 102000000852 Tumor Necrosis Factor-alpha Human genes 0.000 description 1
- 210000000683 abdominal cavity Anatomy 0.000 description 1
- 238000004115 adherent culture Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 238000010171 animal model Methods 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000006909 anti-apoptosis Effects 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 210000002376 aorta thoracic Anatomy 0.000 description 1
- 230000001640 apoptogenic effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003149 assay kit Methods 0.000 description 1
- 238000009227 behaviour therapy Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 210000000133 brain stem Anatomy 0.000 description 1
- 210000000845 cartilage Anatomy 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000010367 cloning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001149 cognitive effect Effects 0.000 description 1
- 230000003931 cognitive performance Effects 0.000 description 1
- 230000001332 colony forming effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 235000018417 cysteine Nutrition 0.000 description 1
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 239000003136 dopamine receptor stimulating agent Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000002651 drug therapy Methods 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000008451 emotion Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 206010015037 epilepsy Diseases 0.000 description 1
- 239000003797 essential amino acid Substances 0.000 description 1
- 235000020776 essential amino acid Nutrition 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000013604 expression vector Substances 0.000 description 1
- 230000004634 feeding behavior Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 210000002950 fibroblast Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 108091006047 fluorescent proteins Proteins 0.000 description 1
- 102000034287 fluorescent proteins Human genes 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 235000012631 food intake Nutrition 0.000 description 1
- 230000000848 glutamatergic effect Effects 0.000 description 1
- 210000001362 glutamatergic neuron Anatomy 0.000 description 1
- 239000005090 green fluorescent protein Substances 0.000 description 1
- 210000003958 hematopoietic stem cell Anatomy 0.000 description 1
- 238000007490 hematoxylin and eosin (H&E) staining Methods 0.000 description 1
- 230000006801 homologous recombination Effects 0.000 description 1
- 238000002744 homologous recombination Methods 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 238000012151 immunohistochemical method Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 210000005240 left ventricle Anatomy 0.000 description 1
- 231100000225 lethality Toxicity 0.000 description 1
- 210000004558 lewy body Anatomy 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 206010027599 migraine Diseases 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 210000003061 neural cell Anatomy 0.000 description 1
- 210000002241 neurite Anatomy 0.000 description 1
- 230000001722 neurochemical effect Effects 0.000 description 1
- 230000004693 neuron damage Effects 0.000 description 1
- 230000007171 neuropathology Effects 0.000 description 1
- 230000002018 overexpression Effects 0.000 description 1
- DIVDFFZHCJEHGG-UHFFFAOYSA-N oxidopamine Chemical compound NCCC1=CC(O)=C(O)C=C1O DIVDFFZHCJEHGG-UHFFFAOYSA-N 0.000 description 1
- 230000003076 paracrine Effects 0.000 description 1
- 230000001936 parietal effect Effects 0.000 description 1
- 229940049954 penicillin Drugs 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 210000003460 periosteum Anatomy 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 230000001242 postsynaptic effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 210000001609 raphe nuclei Anatomy 0.000 description 1
- 238000011552 rat model Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000005245 right atrium Anatomy 0.000 description 1
- 229960004617 sapropterin Drugs 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 230000007958 sleep Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 229960005322 streptomycin Drugs 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000000946 synaptic effect Effects 0.000 description 1
- 230000005062 synaptic transmission Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 210000002303 tibia Anatomy 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 229960004441 tyrosine Drugs 0.000 description 1
- 241000701161 unidentified adenovirus Species 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 230000003827 upregulation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/0004—Oxidoreductases (1.)
- C12N9/0071—Oxidoreductases (1.) acting on paired donors with incorporation of molecular oxygen (1.14)
-
- 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
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/28—Bone marrow; Haematopoietic stem cells; Mesenchymal stem cells of any origin, e.g. adipose-derived stem cells
-
- 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
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/14—Drugs for disorders of the nervous system for treating abnormal movements, e.g. chorea, dyskinesia
- A61P25/16—Anti-Parkinson drugs
-
- 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
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
-
- 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
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/85—Vectors or expression systems specially adapted for eukaryotic hosts for animal cells
- C12N15/86—Viral vectors
-
- 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
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/78—Hydrolases (3) acting on carbon to nitrogen bonds other than peptide bonds (3.5)
-
- 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
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/88—Lyases (4.)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y114/00—Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14)
- C12Y114/16—Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14) with reduced pteridine as one donor, and incorporation of one atom of oxygen (1.14.16)
- C12Y114/16002—Tyrosine 3-monooxygenase (1.14.16.2)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y305/00—Hydrolases acting on carbon-nitrogen bonds, other than peptide bonds (3.5)
- C12Y305/04—Hydrolases acting on carbon-nitrogen bonds, other than peptide bonds (3.5) in cyclic amidines (3.5.4)
- C12Y305/04016—GTP cyclohydrolase I (3.5.4.16)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y401/00—Carbon-carbon lyases (4.1)
- C12Y401/01—Carboxy-lyases (4.1.1)
- C12Y401/01028—Aromatic-L-amino-acid decarboxylase (4.1.1.28), i.e. tryptophane-decarboxylase
-
- 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
- C12N2510/00—Genetically modified cells
-
- 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
- C12N2740/00—Reverse transcribing RNA viruses
- C12N2740/00011—Details
- C12N2740/10011—Retroviridae
- C12N2740/15011—Lentivirus, not HIV, e.g. FIV, SIV
- C12N2740/15041—Use of virus, viral particle or viral elements as a vector
- C12N2740/15043—Use of virus, viral particle or viral elements as a vector viral genome or elements thereof as genetic vector
-
- 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)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Genetics & Genomics (AREA)
- Zoology (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- General Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Neurology (AREA)
- Neurosurgery (AREA)
- Animal Behavior & Ethology (AREA)
- Microbiology (AREA)
- Pharmacology & Pharmacy (AREA)
- Molecular Biology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cell Biology (AREA)
- Developmental Biology & Embryology (AREA)
- Immunology (AREA)
- Virology (AREA)
- Hematology (AREA)
- Hospice & Palliative Care (AREA)
- Epidemiology (AREA)
- Psychiatry (AREA)
- Physics & Mathematics (AREA)
- Plant Pathology (AREA)
- Biophysics (AREA)
- Psychology (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
本发明涉及基因工程改造干细胞的技术领域,具体涉及一种高效合成多巴胺的骨髓间充质干细胞及其制备方法和用途。所述骨髓间充质干细胞特异性表达TH和DDC以及GCH1基因,所述TH、DDC以及GCH1基因的NCBI登录号依次为NM_199292、NM_001082971和NM_001024024。本发明提供的骨髓间充质干细胞在帕金森大鼠脑微环境中可长期存活,可显著上调脑移植区域和血清中的多巴胺和5‑羟色胺水平,并对大鼠运动功能障碍具有明显的修复效应,为用干细胞移植治疗如帕金森病和阿尔茨海默症等神经退行性疾病奠定了基础。
Description
技术领域
本发明涉及基因工程改造干细胞的技术领域,具体涉及一种高效合成多巴胺的骨髓间充质干细胞及其制备方法和用途。
背景技术
帕金森病(Parkinson's disease,PD)是一类重要的中枢神经系统退行性疾病,因脑中路易小体的聚集引起中脑黑质-纹状体通路的多巴胺能神经元变性大量死亡,导致脑内多巴胺(Dopamine,DA)神经递质释放的下降而引起的一系列神经功能障碍,现已成为神经系统疾病治疗的热点之一。目前,临床上以左旋多巴(L-DOPA)为代表的常规药物治疗手段,或辅以多巴胺受体激动剂,多是通过补充左旋多巴在剩余的多巴胺神经元中生成多巴胺发挥作用。然而,这类以消耗剩余的多巴胺神经元的治疗方式只能在一定时间内延缓症状,不能彻底治愈病症,且后期副作用大。而手术治疗的神经核毁损术(针对间接通路亢奋,丘脑底核或苍白球内侧投射纤维)和脑深部电刺激术(丘脑底核或苍白球)虽能缓解症状,但无法使受损的神经元再生,也就无法从根本上上治疗PD。作为PD治疗研究方向之一的细胞移植治疗,主要是通过移植干细胞或者干细胞来源的神经前体细胞替代凋亡的多巴胺能神经元以恢复神经传递发挥功能,同时保护剩余的DA神经元,已成为治疗PD的重要途径。
随着PD致病机制深入研究,通过基因治疗重建缺失的多巴胺神经元并提升DA的合成功能来根治PD成为可能。作为脑内重要神经递质的多巴胺,其合成主要由酪氨酸羟化酶(tyrosine hydroxylase,TH)、多巴胺脱羧酶(dopamine decarboxylase,DDC)和三磷酸鸟苷环化水解酶1(GTP cyclihydrolase l,GCH1)这3种限速酶所调控。多巴胺神经元内的TH在四氢生物蝶呤(tetrahydrobiopterin,BH4)辅助因子的作用下催化脑内的游离L-酪氨酸转化为左旋多巴,左旋多巴又可被DDC催化为神经递质多巴胺释放到体内,而辅助因子BH4是由GTP经GCH1催化生成的。因此,过表达TH、DDC、GCH1这3种DA合成的关键酶被认为能增加DA递质的合成,而且携带人TH、DDC和GCH1基因的腺病毒对帕金森动物模型和临床患者均取得明显的治疗效果。
间充质干细胞(mesenchymal stem cells,MSCs)具有低免疫排斥反应,无畸胎瘤和伦理问题,易于获取等优点,并且MSCs还具有旁分泌作用和抗凋亡作用,能够释放细胞因子,改善周围微环境,迁移到损伤区域并参与修复能力,因此,MSCs已成为干细胞治疗帕金森病的热点细胞之一。然而,MSCs虽然具有分化为神经细胞的能力,却无法大量定向分化为能够合成和分泌DA的多巴胺神经元,并在体内发挥功能。通过基因治疗联合MSCs,获得大量稳定合成和分泌DA的MSCs细胞,可能从根本上治疗PD产生积极疗效。
发明内容
鉴于以上技术问题,本发明提供以下技术方案:
第一方面,本发明提供一种高效合成多巴胺的骨髓间充质干细胞,所述骨髓间充质干细胞特异性表达TH和DDC以及GCH1基因。
进一步的,所述TH和DDC以及GCH1基因的NCBI登录号依次为NM_199292、NM_001082971和NM_001024024。
更进一步的,所述骨髓间充质干细胞选自大鼠骨髓间充质干细胞。
第二方面,本发明提供所述骨髓间充质干细胞的制备方法,包括以下步骤:
S1、分别构建携带有TH基因的重组慢病毒载体LV-TH-mCherry、携带有DDC和GCH1的重组慢病毒载体LV-DDC-GCH1-ZsGreen;
S2、将所述慢病毒载体分别联合病毒包装辅助质粒pSPAX2和pMD2G共转染293T细胞,获得重组慢病毒LV-TH和LV-DDC-GCH1;
S3、利用构建的重组慢病毒对骨髓间充质干细胞进行转染改造,获得所述骨髓间充质干细胞。
进一步的,所述携带有TH基因的重组慢病毒载体是将慢病毒载体质粒pHBLV-CMV-MCS-3flag-EF1-mCherry-T2A-puro的EcoR I和BamH I之间的DNA小分子替换成所述TH基因获得;
所述携带有DDC和GCH1的重组慢病毒载体是将慢病毒载体质粒pHBLV-CMV-EF1-ZsGreen-P2A-BSD的Xho I和BamH I之间的DNA小分子替换成融合基因获得,所述融合基因的序列如SEQ ID NO.2所示。
更进一步的,所述转染是在6μg/mL助转剂Polybrene的作用下,将LV-TH和LV-DDC-GCH1感染骨髓间充质干细胞,所述LV-TH和LV-DDC-GCH1的感染复数分别为7.5和5.0。
第三方面,本发明提供所述骨髓间充质干细胞所述骨髓间充质干细胞在制备治疗神经退行性疾病的药物中的用途。
进一步的,所述神经退行性疾病是由脑中神经元缺失引发。
更进一步的,所述神经退行性疾病为帕金森病。
第四方面,本发明提供所述骨髓间充质干细胞在制备治疗神经紊乱的药物中的用途,所述神经紊乱是由5-羟色胺水平降低引起。
对比现有技术,本发明的有益效果为:
1、本发明成功构建了一种能稳定高效合成DA递质的BMSCs细胞系,该细胞系不仅具有普通BMSCs的特征,如分化为神经元,分泌细胞因子,改善局部微环境的作用,向受损部位迁移参与修复作用等功能,还具有稳定合成和分泌多巴胺神经递质的能力。
2、本发明提供的构建稳定合成DA递质的BMSCs细胞系的方法,为神经元损伤缺失后的补充来源提供了保障,获得的细胞系可用于治疗帕金森病效应的评价。
3、本发明通过脑切片HE染色、免疫组化法检测酪氨酸羟化酶表达,有效验证了移植的DA-BMSCs在宿主脑内存活、迁移和分化;使用阿扑吗啡(APO)诱导旋转实验、旷场实验、和疲劳转棒实验,有效表明移植的DA-BMSCs对帕金森病大鼠具有显著疗效。通过ELISA检测了移植区域的炎症因子,有效证明了BMSCs参与炎症修复效应;HPLC检测表明移植的DA-BMSCs显著上调脑移植区域和血清中的DA和5-羟色胺(5-HT)水平。帕金森病大鼠体内的利用本发明提供的方法得到的神经前体细胞在帕金森大鼠脑微环境中可长期存活,并对大鼠运动功能障碍具有明显的修复效应,为用干细胞移植治疗如帕金森病和阿尔茨海默症等神经退行性疾病奠定了基础。
附图说明
图1为本发明实施例中过表达TH慢病毒载体构建示意图;CMV promoter:CMV启动子;EcoRI:EcoRI限制性内切酶识别序列;LV-h-TH:h-TH基因序列;BamHI:BamHI限制性内切酶识别序列;3xFLAG:3xFLAG标签序列;EF1promoter:EF1启动子;mCherry:mCherry荧光基因序列;T2A:T2A自剪切多肽基因序列PuroR:嘌呤霉素耐药基因序列;WRPE:转录后调控元件;3’dLTR:3’长末端重复序列;SV40 poly(A)signal:SV40 poly(A)signal加尾信号序列;ori:ori的复制区序列;AmpR:氨苄抗性基因序列;AmpR promoter:AmpR启动子;5’dLTR:5’长末端重复序列HIV-1Ψ:HIV长末端重复序列;RRE:RRE元件。
图2为本实验实施例中过表达DDC和GCH1慢病毒载体构建示意图;CMV promoter:CMV启动子;XhoI:XhoI限制性内切酶识别序列;LV-h-DDC-T2A-GCH1:LV-h-DDC-T2A-GCH1基因序列;T2A:T2A自剪切多肽基因序列;BamHI:BamHI限制性内切酶识别序列;3xFLAG:3xFLAG标签序列;EF1promoter:EF1启动子;ZsGreen:ZsGreen荧光基因序列;P2A:P2A自剪切多肽基因序列;Blast:灭瘟素耐药基因序列;WRPE:转录后调控元件;3’dLTR:3’长末端重复序列;SV40 poly(A)signal:SV40 poly(A)signal加尾信号序列;ori:ori的复制区序列;AmpR:氨苄抗性基因序列;AmpR promoter:AmpR启动子;5’dLTR:5’长末端重复序列HIV-1Ψ:HIV长末端重复序列;RRE:RRE元件。
图3为构建的慢病毒载体的琼脂糖凝胶电泳图;左图为构建的过表达DDC和GCH1慢病毒载体和对应空载病毒载体,右图为构建的过表达TH基因慢病毒载体和对应空载病毒载体。
图4为构建稳定表达DA递质的BMSCs细胞系的时间流程图。
图5为BMSCs的分离培养和标志物鉴定;A1为原代培养的BMSCs;A2为培养的第三代BMSCs;A3为培养的第六代BMSCs(A1-A3为100×明场细胞形态);A4为第四代BMSCs形成的克隆团结晶紫染色(200×);B为流式细胞术检测BMSCs表面标志物CD29、CD44、CD73、CD90以及造血谱系细胞标志物CD34和CD45;C为RT-PCR检测BMSCs表面标志物CD29、CD44、CD73、CD90、S100A4和COL1A1,造血谱系细胞标志物CD34和CD45以及上皮细胞标志物CDH1和MUC1;D为免疫荧光检测BMSCs表面标志物CD29、CD44、CD73、CD90,干细胞标志物SOX2和OCT4,以及造血谱系细胞标志物CD34和CD45。
图6为经抗生素筛选后的双慢病毒感染的BMSCs;A为BMSCs表达慢病毒携带的红色荧光蛋白图;B为BMSCs表达慢病毒携带的绿色荧光蛋白图;C为DAPI标记细胞核;D为前三图的叠加。
图7为经慢病毒感染后的BMSCs中TH,DDC和GCH1的表达情况;A为Westernblotting检测感染细胞的TH,DDC和GCH1蛋白表达情况;B为RT-PCR检测感染细胞的TH,DDC和GCH1基因表达情况;C为RT-qPCR检测感染细胞的TH,DDC和GCH1基因相对表达情况。
图8为感染细胞的培养上清液DA水平检测;A为ELISA法检测感染细胞培养上清液DA水平;B为HPLC法检测感染细胞培养上清液DA水平。
图9为DA-BMSCs立体定位移植PD大鼠和行为学检测;A为矢状面和冠状面的细胞移植的两个位点坐标图(①AP-4.4mm,ML-1.2mm,DV-7.8mm;②AP-4.0mm,ML-0.8mm,DV-8.0mm);B为大鼠固定于脑立体定位仪进行脑定位损伤或移植;C为移植大鼠疲劳转棒试验;D为移植大鼠APO-诱导旋转试验;E为旷场实验。
图10为各组大鼠行为学检测统计图;A为APO-诱导旋转试验统计图;B为旷场实验统计图;C为疲劳转棒试验统计图。
图11为在宿主移植区域检测DA-BMSCs分化能力的免疫荧光图(200×);第一列和第二列分别为DA-BMSCs中mCherry、ZsGreen的荧光;第一排为移植物中的TH(多巴胺能神经元标志物)表达情况;第二排为移植物中的GABA(γ氨基丁酸能神经元标志物)表达情况;第三排为移植物中的GFAP(星形胶质细胞标志物)表达情况;第四排为移植物中的PSD95(谷氨酸能神经元标志物)表达情况。
图12为移植细胞在宿主脑内迁移以及突触联系的检测;A为移植细胞在移植4周(200×)和8周(100×)时的迁移情况(白色虚线为迁移方向);B为移植细胞的Synapsin(突触蛋白标志物)表达情况,并与周围的宿主细胞发生突触联系(第一排为100×荧光染色细胞形态;第二排为第一排的放大图,200×荧光染色细胞形态),白色箭头所指的方向为移植细胞迁移到周围区域,分化为神经元样细胞,并与周围宿主细胞或移植细胞发生突触联系。
图13为移植8周后,脑移植区域的炎症因子检测;从左到右分别为ELISA检测的脑移植区域的抗炎因子IL-10,促炎因子IL-6和TNF-α水平的统计图;
图14为移植8周后,分别在脑移植区域和血浆中DA和5-HT水平;A为HPLC检测脑移植区域和血浆中的DA水平统计图;B为HPLC检测脑移植区域和血浆中的5-HT水平统计图;C为DA和5-HT的HPLC色谱图。
具体实施方式
下面结合附图和具体实施例对本发明进行详细说明,但不应理解为本发明的限制。如未特殊说明,下述实施例中所用的技术手段为本领域技术人员所熟知的常规手段,下述实施例中所用的材料、试剂等,如无特殊说明,均可从商业途径得到。
以下实施例中涉及的慢病毒载体信息:
pHBLV-CMV-MCS-3flag-EF1-mCherry-T2A-Puro,商品货号:LV006,购自汉恒生物科技(上海)有限公司。
pHBLV-CMV-EF1-ZsGreen-P2A-BSD,商品货号:LV-060,购自汉恒生物科技(上海)有限公司。
实施例1:过表达TH基因的慢病毒和过表达DDC和GCH1基因的慢病毒的构建
参考NCBI基因库中的人源的酪氨酸羟化酶TH的全长RNA序列(Gene ID:NM_199292),全序列长度为1587bp,将编码TH的核苷酸序列(SEQ ID NO.1所示)插入到慢病毒载体质粒pHBLV-CMV-MCS-3flag-EF1-mCherry-T2A-puro的CMV启动子之后,构建好的载体pHBLV-CMV-TH-3flag-EF1-mCherry-T2A-puro(LV-TH),如图1所示。
参考NCBI基因库中的人源的多巴胺脱羧酶(DDC)和三磷酸鸟苷环化水解酶1(GCH1)的全长RNA序列(Gene ID:NM_001082971和NM_001024024),将编码DDC(1443bp)的核苷酸序列的尾端通过T2A(60bp)与GCH1(753bp)的编码核苷酸序列相连,构成h-DDC-T2A-GCH1融合基因,该融合基因全序列长度为2319bp,其核苷酸序列如SEQ ID NO.2所示,将该序列插入pHBLV-CMV-EF1-ZsGreen-P2A-BSD的CMV启动子之后,构建好的载体pHBLV-CMV-DDC-T2A-GCH1-3xflag-ZsGreen-P2A-BSD(LV-DDC-GCH1),如图2所示。
慢病毒构建流程分为两个阶段:
第一阶段是慢病毒载体的构建:确定目的基因序列信息;表达载体酶切后进行琼脂糖凝胶电泳回收载体片段;引物设计;PCR扩增目的片段;目的基因与载体片段同源重组后转化DH5ɑ感受态细胞;用菌落PCR鉴定转化子,阳性克隆送测序;测序无误的克隆进行质粒抽提。
第二阶段是慢病毒的包装:慢病毒包装、浓缩纯化和滴度检测。
第一阶段所用到的主要试剂与仪器设备见表1和表2。
表1实验试剂
表2实验仪器
具体构建流程如下:
1、根据NCBI的基因数据库,确定目的基因序列信息。
2、用相应的限制性内切酶对工具载体上的酶切位点进行酶切,酶切结束后进行琼脂糖凝胶电泳,回收目的片段;
表3载体酶体系
注:限制性内切酶使用的量及酶切的时间可根据酶活性进行调整;若是单酶切,则进行相应体系的调整。
3、设计引物用于扩增h-TH的序列,引物序列设计如下:
h-TH-E/B-F(SEQ ID NO.3):TAGAGGATCTATTTCCGGTGAATTCGCCACCATGCCCACCCCCGACGC;
h-TH-R(SEQ ID NO.4):CTTAAGCTTGGTACCGAGGATCCGCCAATG GCACTCAGCGCATGGGC;
设计引物用于扩增h-DDC-T2A-GCH1的序列,扩增的模板为人工合成的h-DDC-T2A-GCH1核苷酸序列,引物设计如下:
h-DDC-T2A-GCH1-X/B-F(SEQ ID NO.5):GATCTATTTCCGGTGAATTCCTCGAGGCCACCATGAACGCAAGTGAATT;
h-DDC-T2A-GCH1-X/B-R(SEQ ID NO.6):GAATTCGAAGCTTGTCCGGATCCTTATTTGTCGTCATCATCCTTATAGT。
4、PCR扩增目的片段配制片段PCR扩增体系,轻轻混匀,置于PCR仪中进行反应;
表4PCR扩增体系
表5反应程序
注:1)退火温度为引物Tm值,退火温度直接决定扩增特异性;2)如果发现扩增特异性差,可适当提高退火温度,每次+2℃;2)适当延长延伸时间有助于提高扩增产量。
5、将扩增的目的片段进行琼脂糖凝胶电泳,回收目的DNA片段,并与回收的线性化载体进行重组连接反应,使用HB infusionTM一步克隆连接体系,于冰水浴中配制反应体系,连接反应液在50℃反应30min后,置于冰上5min,立即转化。
表6连接反应体系
注:1)建议2-3个片段连接时,DNA片段的使用总量为0.02~0.5pmols(一般使用时,加入的片段量在100-150ng,载体量在50-100ng),4~6片段连接时加入的DNA总量为0.2~1.0pmols。DNA拼接效率随着拼接片段的数量增加或者拼接片段长度的增加逐渐降低。
取一支感受态细胞(每管50μL,-80℃保存)于冰上,待溶解后加入5μL连接液,轻轻旋转以混匀内容物,在冰中放置30分钟;将管放到预加温到42℃的恒温水浴锅中热激90秒(这个时间非常严格);热激完快速将管转移至冰浴中冰浴2-3min;每管加入500μL无抗的LB培养基,轻柔上下颠倒3-5次,置于37℃摇床230rpm震荡60min;取适量菌液均匀涂于含有相应抗生素的固体平板上,倒置平板37℃恒温培养箱培养16h。
7、挑取平板上的菌落重悬于10μL LB培养基,取1μL做为模板进行菌落PCR鉴定。
表7PCR反应体系
表8PCR反应程序
8、将筛选出来的阳性克隆,选择两个克隆进行测序,测序结果与预期的目的基因序列一致,表明该目的质粒构建成功。安排菌液扩增,进行质粒抽提纯化(图3)。
第二阶段所需的实验材料和仪器
实验材料:293T细胞,生长培养基为DMEM(含10%FBS),大肠杆菌菌株DH5-α,三质粒系统:pSPAX2(病毒包装辅助质粒)、pMD2G(病毒包装辅助质粒)和穿梭质粒(上述构建的慢病毒载体)。
表9实验试剂
表10实验仪器
具体包装流程如下:
提前准备好用于转染的293T细胞,置于37℃,5% CO2培养箱中培养,当细胞密度达70-80%进行转染,配制脂质体转染complex,,混匀后在室温静置15min后缓慢滴加至293T细胞中,继续培养箱培养,16h更换新鲜培养基。转染后48h和72h分别收集两次病毒上清(48h收集后置换新鲜完全培养基)。将收集的病毒上清,4℃,2000×g,离心10min,收集上清,再次置于超速离心管中,4℃,82700×g,离心120min,完全培养基重悬沉淀,最后将超离重悬液分装到灭菌处理的病毒管中,-80℃冰箱保存。
表11脂质体转染complex反应体系
获得的病毒液进行滴度检测,采用稀释计数测定法,将293T细胞稀释至1×105/mL,加入96孔板培养,100μL/孔,为每个病毒准备6个孔。第二天,准备6个1.5mL EP管,第一个EP管中加入10μL病毒液,然后做3倍梯度稀释,共6个稀释度。第三天,先吸去含病毒培养基,加入100μL含1.5μg/mL puromycin或1μg/mL Blasticidin的10%FBS完全培养基筛选两天。第五天,吸取80μL培养基,加入80μL新鲜培养基继续培养,6h后荧光显微镜下计算病毒滴度。滴度(TU/mL)=细胞数×阳性克隆百分比×MOI(1)×病毒稀释倍数×103TU/mL,测定LV-TH的滴度为1×108TU/mL,LV-DDC-GCH1的滴度为1×108TU/mL。
实施例2:稳定合成多巴胺递质的骨髓间充质干细胞系的构建
本发明所述的通过基因改造大鼠BMSCs的方法得到的稳定合成DA递质的BMSCs细胞系是临床级别的,可用于临床研究及未来的临床治疗,整个构建过程如图4所示。
骨髓间充质干细的DF-12培养基组成为:基础培养基DMEM:F12(Gibco)+10%胎牛血清(FBS,Gibco)+1% L-谷氨酰胺(Glutamax,Gibco)+1%非必需氨基酸(NEAA,Gibco)+20ng/mL碱性成纤维细胞生长因子(FGF2,R&D)+1%青霉素-链霉素(Penicillin-Streptomycin Solution,Gibco),百分比为体积百分比。
高纯度的稳定合成DA递质的BMSCs细胞系的制备过程分为三部分:
1、大鼠原代BMSCs培养
颈椎脱臼法处死4周龄大小的SD大鼠,完整剥离大鼠股骨和胫骨,经PBS清洗去除碎骨和碎肉后,剪去两端软骨,5mL注射器吸取DF-12培养基从骨中缓慢冲洗出细胞悬液,直至骨腔发白。细胞悬液经200目筛网过滤后转入T25培养瓶中,置于37℃,5% CO2的培养箱中贴壁培养。
2、慢病毒感染BMSCs
采用半量体积感染法进行感染。将培养至P3-P4代的大鼠BMSCs作为被感染细胞,将生长状态良好的待感染的BMSCs以5×104接种于24孔板,保证第二天感染时细胞汇合率为40-50%。感染前从冰箱取出病毒在冰上慢慢融化,在添加有6μg/mL助转剂聚凝胺的DF-12培养基,加入LV-TH(感染复数MOI:7.5)和LV-DDC-GCH1(感染复数MOI:5.0)的过表达慢病毒,吸去旧培养基,加入半量培养体积的含慢病毒培养基感染4h,然后补足培养基至培养体积继续培养,感染24小时后吸去含慢病毒培养基,换新鲜培养基继续培养2天。
3、抗生素筛选慢病毒感染的BMSCs
将上述细胞在含有2μg/mL的嘌呤霉素(PURO)的DF-12培养基进行筛选培养2天,换成1μg/mL的嘌呤霉素(PURO)的DF-12培养基继续筛选培养2天,随后换成新鲜DF-12培养基稳定培养3天。接着继续在含有1.5μg/mL的灭瘟素(BSD)的DF-12培养基进行筛选培养2天,在0.75μg/mL的灭瘟素(BSD)的DF-12培养基进行筛选培养2天,最后在新鲜DF-12培养基稳定培养3天,即可获得纯化的稳定合成DA递质的BMSCs细胞系。
原代培养的BMSCs经过一夜贴壁培养,粘附于培养瓶底部,将未粘附的骨髓造血系统细胞洗去,贴壁细胞呈成纤维细胞样的短梭形或者双极状,部分呈旋涡状(图5A1),旁边还残存一些其他细胞。经过连续传代,可获得纯化的BMSCs(图5A2,图5A3),具有较强的克隆团形成能力(图5A4)。
流式细胞术,免疫荧光和RT-PCR检测表明(图5B-5D),培养的细胞显著表达间充质干细胞表面标志物CD29、CD44、CD73、CD90,而不表达造血谱系细胞标志物CD34和CD45。同时细胞还表达干细胞标志物SOX2和OCT4,间充质干细胞标志物S100A4和COL1A1,不表达上皮细胞标志物CDH1和MUC1,证实分离培养的细胞是纯化的BMSCs。
慢病毒感染BMSCs,48h后开始出现荧光,72h达到荧光表达高峰,感染效率达到50%左右。经过抗生素筛选2周,几乎所有细胞均强烈表达慢病毒携带的荧光蛋白(图6)。Western blotting结果表明(图7A),在双病毒感染的细胞中(LV-TH+DDC-GCH1)强烈表达TH,DDC和GCH1蛋白,RT-PCR和RT-qPCR分析(图7B,7C)也证实了TH,DDC和GCH1基因在感染细胞中显著过表达,而在未改造的BMSCs中未发现TH,DDC和GCH1的表达。
为了检测慢病毒感染的BMSCs的DA合成功能,采用ELISA和HPLC法对细胞培养上清液中的DA浓度进行分析(图8A,8B)。收集培养3d的细胞培养上清液,转移至无菌离心管中,4℃、3 000r/min离心20min,收集上清。考虑到培养基中可能存在血清等干扰成分,我们对所有样本数据去除培养基背景值处理。结果表明,相对于未改造的BMSCs,双病毒感染的BMSCs的DA水平上升11倍以上,并在传代后依旧保持稳定高表达状态。综上所述,本发明成功构建能稳定过表达DA递质的BMSCs细胞系(DA-BMSCs)。
实施例3:DA-BMSCs的体内功能检测
1、PD模型的构建
3%戊巴比妥腹腔注射麻醉180~220g左右的SPF级的SD大鼠,待充分麻醉后,固定于立体定位仪平台上,对脑部皮肤常规消毒,切开皮肤,剥离骨膜暴露大鼠颅骨,通过脑立体定向仪确定注射位置(图9B)。参考Paxinos等人所著的第六版大鼠脑定位图谱,以前囟为标准参考点,确定右侧前脑内侧束注射位点(图9A):①AP-4.4mm,ML-1.2mm,DV-7.8mm;②AP-4.0mm,ML-0.8mm,DV-8.0mm。使用牙科颅骨钻孔,Hamilton微量注射器在每点以1μL/2min缓慢注射4μL的4μg/μL的6-OHDA,注射时间为8min,留针8min,缓慢退针,缝合颅顶伤口,术后连续3天腹腔注射30kU青霉素,预防感染,并每天观察恢复情况。
2、行为学检测
(1)APO诱导旋转实验:脑立体定位建模两周后腹腔注射阿朴吗啡(0.5mg/kg),注射后的建模大鼠表现出嗅探、压尾巴、僵硬和以健侧后肢作为支撑点,身体向健侧弯曲和头尾相接的旋转行为(图9D),旋转圈数超过210r/30min视为建模成功。
(2)疲劳转棒实验
设置转棒速度为10r/min,时间为30min,系统测试记录大鼠在30min内的在棒时间(图9C)。每只大鼠测试3次以确保实验数据准确。
(3)旷场实验:旷场箱100×100×40(长×宽×高,cm),在正中格上方安置摄像头。启动电脑,打开旷场实验追踪记录系统,将待测大鼠放置于旷场箱正中,摄像头会自动捕获并记录大鼠在旷场箱内5min内的活动情况(图9E)。
3、DA-BMSCs立体定向移植帕金森模型大鼠治疗
DA-BMSCs移植前处理:生长状态良好的细胞加胰酶消化后,血清中止消化,收集细胞至离心管中,离心去除胰酶溶液,加入PBS溶液吹打单细胞后计数,确保细胞悬液的细胞浓度为1.25x104-1.5x104/μL,模型组大鼠以PBS溶液代替。
DA-BMSCs立体定向移植帕金森模型大鼠治疗:选取建模成功的PD大鼠模型,采用与建模相同的方法,将细胞移植入PD大鼠脑前脑内侧束(MFB)区。
4、组织取材
细胞移植治疗8周后,用3%戊巴比妥腹腔注射麻醉PD大鼠,固定于大鼠解剖板上,常规消毒后打开腹腔、胸腔,用止血钳扩大手术空间,完全暴露心脏,用灌注针从左心室插入主动脉弓,迅速剪开右心房,出口尽可能大,不可破坏主动脉,灌注生理盐水200mL左右,再用约200mL 4%多聚甲醛灌注固定,大鼠逐渐进入僵硬状态。在冰上剥离完整脑组织,4%多聚甲醛内继续固定约4h,25%蔗糖4℃充分脱水,-80℃环境冻存。使用OCT包埋剂(Sakura)包埋脑组织,冰冻切片机在12-20μm切片厚度连续冠状切片,-20℃保存。
5、免疫荧光
将切片在室温复温10min。然后进行免疫荧光染色(自带红绿色荧光的细胞)观察移植细胞在体内存活、分化和迁移能力。
6、ELISA检测炎症因子
使用多巴胺酶联免疫吸附测定(ELISA)测定试剂盒(Bioss)检测抗炎因子IL-10和促炎因子IL-6,TNF-α水平。将细胞移植8周的大鼠脱颈椎致死,剥离脑组织,取移植区域脑组织称重,加入9倍体积的PBS溶液,冷冻研磨机进行破碎研磨,4℃、14 000r/min离心10min,留取上清进行检测。
7、HPLC检测DA和5-HT
使用HPLC检测大鼠脑移植区域和血浆中的DA和5-HT,将细胞移植8周的大鼠脱颈椎致死,剥离脑组织,取移植区域脑组织50mg,加入250μL的高氯酸沉淀剂(含0.35M高氯酸和1.5mM半胱氨酸),冷冻研磨机进行破碎研磨,4℃、14 000r/min离心10min,留取上清经0.22μm过滤器过滤。收集的血浆样本50μL中加入250μL高氯酸沉淀剂,充分混匀后静置10min,18 000r/min,离心10min,吸取上清再次离心,取上清待测。流动相由50mM KH2PO4和0.08mM EDTA组成的A相,以及甲醇组成B相构成。C18柱(YMC-Triart,4.6×100mm,5μm)为色谱柱,柱温箱温度40℃。采用15%B相,1mL/mL的等量洗脱程序。每个样本进样量20μL,分析10min。高效液相分析仪为岛津LC-20。
8、结果
移植的DA-BMSCs显著改善了帕金森模型大鼠的认知与运动行为障碍。移植DA-BMSCs后第8周,APO诱导旋转行为学检测结果显示,移植组大鼠的转圈行为明显减少(P<0.05)(图10A)。而且,移植组大鼠比模型组大鼠旷场运动总距离明显增加,而且更活跃、更兴奋(P<0.05,图10B及图9E)。此外,与模型组相比,在疲劳转棒实验中,移植组大鼠在棒时间明显增加(P<0.05,图10C及图9D)。
免疫荧光染色发现,移植的DA-BMSCs细胞可以在宿主脑内分化出多种功能性神经元,表达多巴胺神经元标志物TH、GABA能神经元标志物GABA、谷氨酸能神经元突触后膜标志物PSD95和星型胶质细胞标志物GFAP,得到神经前体细胞体内分化能力鉴定图(图11)。以上结果表明移植的DA-BMSCs可以在宿主脑内分化为多种功能性神经元和星形胶质细胞发挥损伤修复作用。
移植细胞能在宿主脑内存活并发生远距离迁移(图12A),且移植4周后发生明显的迁移,8周后从移植部位可迁移2.5-3.0mm;表达神经突触前膜标记蛋白Synapsin(图12B),并与自体神经元产生突触连接并发挥作用,并在白色箭头所指能明显发现迁移分化的呈神经元样细胞,相互连接产生联系。
在移植8周时,与模型组相比,移植组PD大鼠脑移植区域炎症因子包括抗炎因子IL-10和促炎因子IL-6,TNF-α水平明显下调(P<0.05,图13),表明DA-BMSCs保留了BMSCs修复的能力,抑制炎症因子表达,并对创伤后的炎症过程发挥了良好的功效。
HPLC分析结果表明,相对于模型组,移植细胞组在宿主体内能显著上调中脑和血浆中DA和5-HT水平(图14A,14B)。
上述结果显示本发明成功构建过表达TH,DDC和GCH1这三个多巴胺合成路径关键酶基因的慢病毒载体,进而获得表达TH,DDC和GCH1基因的BMSCs细胞系,这种细胞系能够稳定大量合成DA递质,移植体内能大量存活,并迁移到周围损伤区域分化为功能性神经元和星形胶质细胞,抑制炎症因子的产生,参与创伤后的炎症修复过程,此外,还显著上调体内的DA和5-HT水平,促进神经系统退行性疾病的修复和行为学的改善。
本发明的潜在应用说明:
DA-BMSCs体内可明显促进5-羟色胺(5-Hydroxy Tryptamine,5-HT)分泌,而5-羟色胺对于神经系统疾病治疗具有重要的应用潜能。5-羟色胺,又称血清素(Serotonin),是一种主要来源于脑干中缝背核(Dorsal Raphe Nucleus,DRN)的抑制性单胺类神经递质,可参与调节情感、摄食、体温和睡眠等一系列中枢神经系统行为。5-HT可在抑郁症的发病机制中发挥抗抑郁的关键作用而备受关注,而且对其他的神经系统疾病也有重要作用,如帕金森病、阿尔兹海默病、脑卒中、癫痫和偏头痛等伴随的抑郁焦虑症状,提高中枢5-HT水平能有效改善这些神经系统疾病的伴随症状。此外,5-HT递质系统紊乱是阿尔兹海默病的显著神经化学变化,上调5-HT水平可以显著缓解阿尔兹海默病的脑神经病理学以及认知行为等临床症状。位于中脑腹侧被盖区(VTA)的多巴胺能神经元还能通过与5-HT神经元组成的神经环路调控进食行为以及神经性厌食症。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。
Claims (10)
1.一种高效合成多巴胺的骨髓间充质干细胞,其特征在于,所述骨髓间充质干细胞特异性表达TH、DDC以及GCH1基因。
2.根据权利要求1所述的骨髓间充质干细胞,其特征在于,所述TH、DDC以及GCH1基因的NCBI登录号依次为NM_199292、NM_001082971和NM_001024024。
3.根据权利要求2所述的骨髓间充质干细胞,其特征在于,所述骨髓间充质干细胞选自大鼠骨髓间充质干细胞。
4.权利要求3所述骨髓间充质干细胞的制备方法,其特征在于,包括以下步骤:
S1、分别构建携带有TH基因的重组慢病毒载体LV-TH-mCherry、携带有DDC和GCH1的重组慢病毒载体LV-DDC-GCH1-ZsGreen;
S2、将所述慢病毒载体分别联合病毒包装辅助质粒pSPAX2和pMD2G共转染293T细胞,获得重组慢病毒LV-TH和LV-DDC-GCH1;
S3、利用构建的重组慢病毒对骨髓间充质干细胞进行转染改造,获得所述骨髓间充质干细胞。
5.根据权利要求4所述的制备方法,其特征在于,所述携带有TH基因的重组慢病毒载体是将慢病毒载体质粒pHBLV-CMV-MCS-3flag-EF1-mCherry-T2A-puro的EcoR I和BamH I之间的DNA小分子替换成所述TH基因获得;
所述携带有DDC和GCH1的重组慢病毒载体是将慢病毒载体质粒pHBLV-CMV-EF1-ZsGreen-P2A-BSD的Xho I和BamH I之间的DNA小分子替换成融合基因获得,所述融合基因的序列如SEQ ID NO.2所示。
6.根据权利要求5所述的制备方法,其特征在于,所述转染是在6μg/mL助转剂Polybrene的作用下,将LV-TH和LV-DDC-GCH1感染骨髓间充质干细胞,所述LV-TH和LV-DDC-GCH1的感染复数分别为7.5和5.0。
7.权利要求1所述骨髓间充质干细胞在制备治疗神经退行性疾病的药物中的用途。
8.根据权利要求7所述的用途,其特征在于,所述神经退行性疾病是由脑中神经元缺失引发。
9.根据权利要求8所述的用途,其特征在于,所述神经退行性疾病为帕金森病。
10.权利要求1所述骨髓间充质干细胞在制备治疗神经紊乱的药物中的用途,其特征在于,所述神经紊乱是由5-羟色胺水平降低引起。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310191162.7A CN116200343A (zh) | 2023-03-02 | 2023-03-02 | 一种高效合成多巴胺的骨髓间充质干细胞及其制备方法和用途 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310191162.7A CN116200343A (zh) | 2023-03-02 | 2023-03-02 | 一种高效合成多巴胺的骨髓间充质干细胞及其制备方法和用途 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN116200343A true CN116200343A (zh) | 2023-06-02 |
Family
ID=86518925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202310191162.7A Pending CN116200343A (zh) | 2023-03-02 | 2023-03-02 | 一种高效合成多巴胺的骨髓间充质干细胞及其制备方法和用途 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN116200343A (zh) |
-
2023
- 2023-03-02 CN CN202310191162.7A patent/CN116200343A/zh active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10905722B2 (en) | Induced pacemaker and Purkinje cells from adult stem cells | |
US20060247195A1 (en) | Method of altering cell properties by administering rna | |
CN112194717B (zh) | 一种促进耳蜗毛细胞再生的肽段Tr及其应用 | |
WO2018030630A1 (ko) | Sox 유전자가 이입된 비바이러스성 미니써클 벡터 및 이의 제조방법 | |
CN111484977B (zh) | 重编程产生功能性去甲肾上腺素能神经元的方法 | |
CN111484978A (zh) | miR-140-5p过表达修饰的人脐带间充质干细胞、其治疗制剂、制备方法和应用 | |
CN111518774B (zh) | 一种提高滑膜间充质干细胞逆境耐受性的方法及其试剂 | |
CN116200343A (zh) | 一种高效合成多巴胺的骨髓间充质干细胞及其制备方法和用途 | |
CN111718898B (zh) | 提高滑膜间充质干细胞逆境耐受性的方法及其试剂 | |
CN116693626A (zh) | 订书肽及其用途和在体外扩增干细胞的方法 | |
US20220370507A1 (en) | Endothelial and smooth muscle like tissue produced from urine cells and uses related thereto | |
CN114615985A (zh) | 包含修饰mRNA的分子的组合物及其使用方法 | |
CN115094090B (zh) | 特定硫酸肝素修饰酶基因修饰的细胞及其构建方法和应用 | |
CN114181915B (zh) | 基于kdm2b序列合成的生物活性多肽在间充质干细胞神经分化和再生修复中的应用 | |
CN114958767B (zh) | 基于hiPSC细胞构建的神经干细胞制剂的制备方法 | |
KR102249776B1 (ko) | 개선된 생체 내 리프로그래밍 시스템 및 이를 이용한 세포 전환 방법 | |
KR102051403B1 (ko) | 개선된 생체 내 리프로그래밍 시스템 및 이를 이용한 스크리닝방법 | |
CN108265029A (zh) | 人类多能干细胞来源的人类心室肌细胞的筛选及制备方法 | |
JP2017063669A (ja) | 合成ペプチドを用いた神経幹細胞の生産方法 | |
JP6654323B2 (ja) | 重層上皮組織形成能を有する細胞、及びその製造方法 | |
CN115820743A (zh) | 帕金森基因编辑猪神经干细胞模型、构建方法及应用 | |
CN114807233A (zh) | 一种巨噬细胞特异性usp13过表达的重组腺相关病毒及其应用 | |
CN116926002A (zh) | 脐带间充质干细胞株MSC-puro-MYOG及其的应用 | |
CN115845030A (zh) | 神经生长因子诱导蛋白或其基因的应用 | |
Flanagan | Identification of genes responsible for maintenance of differentiation capability in dental pulp stem cells |
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 |