CN102080098A - 一种真核表达载体以及在制备抑制白血病细胞增殖药物中的应用 - Google Patents
一种真核表达载体以及在制备抑制白血病细胞增殖药物中的应用 Download PDFInfo
- Publication number
- CN102080098A CN102080098A CN 201010576421 CN201010576421A CN102080098A CN 102080098 A CN102080098 A CN 102080098A CN 201010576421 CN201010576421 CN 201010576421 CN 201010576421 A CN201010576421 A CN 201010576421A CN 102080098 A CN102080098 A CN 102080098A
- Authority
- CN
- China
- Prior art keywords
- cells
- expression vector
- cell
- present
- tat
- 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
- 208000032839 leukemia Diseases 0.000 title claims abstract description 19
- 239000003814 drug Substances 0.000 title claims abstract description 16
- 230000004663 cell proliferation Effects 0.000 title claims abstract description 10
- 239000013604 expression vector Substances 0.000 title abstract description 22
- 230000002401 inhibitory effect Effects 0.000 title abstract description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 239000002773 nucleotide Substances 0.000 claims abstract description 5
- 125000003729 nucleotide group Chemical group 0.000 claims abstract description 5
- 230000014509 gene expression Effects 0.000 claims description 18
- 230000005764 inhibitory process Effects 0.000 claims description 4
- 241000699802 Cricetulus griseus Species 0.000 claims description 2
- 206010033128 Ovarian cancer Diseases 0.000 claims description 2
- 206010061535 Ovarian neoplasm Diseases 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 abstract description 77
- 210000004978 chinese hamster ovary cell Anatomy 0.000 abstract description 12
- 210000004940 nucleus Anatomy 0.000 abstract description 12
- 229940079593 drug Drugs 0.000 abstract description 11
- 230000035755 proliferation Effects 0.000 abstract description 11
- 230000004069 differentiation Effects 0.000 abstract description 9
- 208000036762 Acute promyelocytic leukaemia Diseases 0.000 abstract description 8
- 210000003714 granulocyte Anatomy 0.000 abstract description 8
- 108090000765 processed proteins & peptides Proteins 0.000 abstract description 8
- 102000004196 processed proteins & peptides Human genes 0.000 abstract description 7
- 238000012404 In vitro experiment Methods 0.000 abstract description 5
- 210000000170 cell membrane Anatomy 0.000 abstract description 5
- 229920001184 polypeptide Polymers 0.000 abstract description 5
- 210000000633 nuclear envelope Anatomy 0.000 abstract description 4
- 208000031261 Acute myeloid leukaemia Diseases 0.000 abstract description 3
- 208000033776 Myeloid Acute Leukemia Diseases 0.000 abstract description 3
- SHGAZHPCJJPHSC-YCNIQYBTSA-N all-trans-retinoic acid Chemical compound OC(=O)\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C SHGAZHPCJJPHSC-YCNIQYBTSA-N 0.000 abstract description 3
- 238000011254 conventional chemotherapy Methods 0.000 abstract description 3
- 230000035515 penetration Effects 0.000 abstract description 3
- 229930002330 retinoic acid Natural products 0.000 abstract description 3
- 230000008685 targeting Effects 0.000 abstract description 3
- 206010059866 Drug resistance Diseases 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010353 genetic engineering Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 108090000623 proteins and genes Proteins 0.000 description 36
- 108020001507 fusion proteins Proteins 0.000 description 31
- 102000037865 fusion proteins Human genes 0.000 description 30
- 102000004169 proteins and genes Human genes 0.000 description 23
- 102000004058 Leukemia inhibitory factor Human genes 0.000 description 16
- 108090000581 Leukemia inhibitory factor Proteins 0.000 description 16
- 238000000034 method Methods 0.000 description 14
- 239000012634 fragment Substances 0.000 description 13
- 101100239628 Danio rerio myca gene Proteins 0.000 description 10
- 239000006228 supernatant Substances 0.000 description 10
- 239000002609 medium Substances 0.000 description 8
- 150000001413 amino acids Chemical class 0.000 description 7
- 238000010361 transduction Methods 0.000 description 7
- 230000026683 transduction Effects 0.000 description 7
- 239000013598 vector Substances 0.000 description 7
- 238000010166 immunofluorescence Methods 0.000 description 6
- 230000003834 intracellular effect Effects 0.000 description 6
- 239000013612 plasmid Substances 0.000 description 6
- 238000004587 chromatography analysis Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 108010051109 Cell-Penetrating Peptides Proteins 0.000 description 4
- 102000020313 Cell-Penetrating Peptides Human genes 0.000 description 4
- 101000946889 Homo sapiens Monocyte differentiation antigen CD14 Proteins 0.000 description 4
- 102100021747 Leukemia inhibitory factor receptor Human genes 0.000 description 4
- 102100035877 Monocyte differentiation antigen CD14 Human genes 0.000 description 4
- 208000033826 Promyelocytic Acute Leukemia Diseases 0.000 description 4
- 108010076504 Protein Sorting Signals Proteins 0.000 description 4
- 101710149951 Protein Tat Proteins 0.000 description 4
- 230000004071 biological effect Effects 0.000 description 4
- 210000004899 c-terminal region Anatomy 0.000 description 4
- 230000001086 cytosolic effect Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000012163 sequencing technique Methods 0.000 description 4
- 238000010186 staining Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000001262 western blot Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 108020004414 DNA Proteins 0.000 description 3
- 101001046686 Homo sapiens Integrin alpha-M Proteins 0.000 description 3
- 241000713772 Human immunodeficiency virus 1 Species 0.000 description 3
- 102100022338 Integrin alpha-M Human genes 0.000 description 3
- 101710142062 Leukemia inhibitory factor receptor Proteins 0.000 description 3
- 241000699666 Mus <mouse, genus> Species 0.000 description 3
- 108010017324 STAT3 Transcription Factor Proteins 0.000 description 3
- 102000004495 STAT3 Transcription Factor Human genes 0.000 description 3
- 238000004113 cell culture Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- NKLPQNGYXWVELD-UHFFFAOYSA-M coomassie brilliant blue Chemical compound [Na+].C1=CC(OCC)=CC=C1NC1=CC=C(C(=C2C=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C=2C=CC(=CC=2)N(CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C=C1 NKLPQNGYXWVELD-UHFFFAOYSA-M 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000684 flow cytometry Methods 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 230000026731 phosphorylation Effects 0.000 description 3
- 238000006366 phosphorylation reaction Methods 0.000 description 3
- 238000001742 protein purification Methods 0.000 description 3
- 238000003259 recombinant expression Methods 0.000 description 3
- 230000019491 signal transduction Effects 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 108091003079 Bovine Serum Albumin Proteins 0.000 description 2
- 241000283707 Capra Species 0.000 description 2
- 102000004127 Cytokines Human genes 0.000 description 2
- 108090000695 Cytokines Proteins 0.000 description 2
- 108010042407 Endonucleases Proteins 0.000 description 2
- 102000004533 Endonucleases Human genes 0.000 description 2
- 108010017080 Granulocyte Colony-Stimulating Factor Proteins 0.000 description 2
- 102000004269 Granulocyte Colony-Stimulating Factor Human genes 0.000 description 2
- 102000004457 Granulocyte-Macrophage Colony-Stimulating Factor Human genes 0.000 description 2
- 108010017213 Granulocyte-Macrophage Colony-Stimulating Factor Proteins 0.000 description 2
- 108060003951 Immunoglobulin Proteins 0.000 description 2
- 108090001005 Interleukin-6 Proteins 0.000 description 2
- 102000005818 Leukemia Inhibitory Factor Receptor alpha Subunit Human genes 0.000 description 2
- 108010019742 Leukemia Inhibitory Factor Receptor alpha Subunit Proteins 0.000 description 2
- 102000003960 Ligases Human genes 0.000 description 2
- 108090000364 Ligases Proteins 0.000 description 2
- 241000699670 Mus sp. Species 0.000 description 2
- 229930193140 Neomycin Natural products 0.000 description 2
- 239000012980 RPMI-1640 medium Substances 0.000 description 2
- 241000700159 Rattus Species 0.000 description 2
- 102000007056 Recombinant Fusion Proteins Human genes 0.000 description 2
- 108010008281 Recombinant Fusion Proteins Proteins 0.000 description 2
- 102000004142 Trypsin Human genes 0.000 description 2
- 108090000631 Trypsin Proteins 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 230000024245 cell differentiation Effects 0.000 description 2
- 230000010261 cell growth Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012091 fetal bovine serum Substances 0.000 description 2
- MHMNJMPURVTYEJ-UHFFFAOYSA-N fluorescein-5-isothiocyanate Chemical compound O1C(=O)C2=CC(N=C=S)=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 MHMNJMPURVTYEJ-UHFFFAOYSA-N 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 102000018358 immunoglobulin Human genes 0.000 description 2
- 238000000338 in vitro Methods 0.000 description 2
- 238000001638 lipofection Methods 0.000 description 2
- 230000001404 mediated effect Effects 0.000 description 2
- 238000010369 molecular cloning Methods 0.000 description 2
- 229960004927 neomycin Drugs 0.000 description 2
- 230000001575 pathological effect Effects 0.000 description 2
- 102000005962 receptors Human genes 0.000 description 2
- 108020003175 receptors Proteins 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 230000003248 secreting effect Effects 0.000 description 2
- UCSJYZPVAKXKNQ-HZYVHMACSA-N streptomycin Chemical compound CN[C@H]1[C@H](O)[C@@H](O)[C@H](CO)O[C@H]1O[C@@H]1[C@](C=O)(O)[C@H](C)O[C@H]1O[C@@H]1[C@@H](NC(N)=N)[C@H](O)[C@@H](NC(N)=N)[C@H](O)[C@H]1O UCSJYZPVAKXKNQ-HZYVHMACSA-N 0.000 description 2
- 238000001890 transfection Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 239000012588 trypsin Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RAVVEEJGALCVIN-AGVBWZICSA-N (2s)-2-[[(2s)-2-[[(2s)-2-[[(2s)-5-amino-2-[[(2s)-2-[[(2s)-2-[[(2s)-6-amino-2-[[(2s)-6-amino-2-[[(2s)-2-[[2-[[(2s)-2-amino-3-(4-hydroxyphenyl)propanoyl]amino]acetyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]hexanoyl]amino]hexanoyl]amino]-5-(diamino Chemical compound NC(N)=NCCC[C@@H](C(O)=O)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCCN=C(N)N)NC(=O)CNC(=O)[C@@H](N)CC1=CC=C(O)C=C1 RAVVEEJGALCVIN-AGVBWZICSA-N 0.000 description 1
- FWMNVWWHGCHHJJ-SKKKGAJSSA-N 4-amino-1-[(2r)-6-amino-2-[[(2r)-2-[[(2r)-2-[[(2r)-2-amino-3-phenylpropanoyl]amino]-3-phenylpropanoyl]amino]-4-methylpentanoyl]amino]hexanoyl]piperidine-4-carboxylic acid Chemical compound C([C@H](C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCCCN)C(=O)N1CCC(N)(CC1)C(O)=O)NC(=O)[C@H](N)CC=1C=CC=CC=1)C1=CC=CC=C1 FWMNVWWHGCHHJJ-SKKKGAJSSA-N 0.000 description 1
- 102100035248 Alpha-(1,3)-fucosyltransferase 4 Human genes 0.000 description 1
- HTAGIZQYGRLQQX-AUUYWEPGSA-N Amurine Chemical compound C1C2=CC=3OCOC=3C=C2[C@]23C=C(OC)C(=O)C=C3[C@@H]1N(C)CC2 HTAGIZQYGRLQQX-AUUYWEPGSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 102000005754 Cytokine Receptor gp130 Human genes 0.000 description 1
- 108010006197 Cytokine Receptor gp130 Proteins 0.000 description 1
- 102000016928 DNA-directed DNA polymerase Human genes 0.000 description 1
- 108010014303 DNA-directed DNA polymerase Proteins 0.000 description 1
- 102000010170 Death domains Human genes 0.000 description 1
- 108050001718 Death domains Proteins 0.000 description 1
- 208000031886 HIV Infections Diseases 0.000 description 1
- 101001022185 Homo sapiens Alpha-(1,3)-fucosyltransferase 4 Proteins 0.000 description 1
- 101000942967 Homo sapiens Leukemia inhibitory factor Proteins 0.000 description 1
- 101000573199 Homo sapiens Protein PML Proteins 0.000 description 1
- 108700000788 Human immunodeficiency virus 1 tat peptide (47-57) Proteins 0.000 description 1
- 101150009057 JAK2 gene Proteins 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 108010064527 OSM-LIF Receptors Proteins 0.000 description 1
- 108091034117 Oligonucleotide Proteins 0.000 description 1
- 108010038807 Oligopeptides Proteins 0.000 description 1
- 102000015636 Oligopeptides Human genes 0.000 description 1
- 241000283973 Oryctolagus cuniculus Species 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
- 206010063837 Reperfusion injury Diseases 0.000 description 1
- 206010039491 Sarcoma Diseases 0.000 description 1
- 102100026185 Syncollin Human genes 0.000 description 1
- 101710168213 Syncollin Proteins 0.000 description 1
- JLCPHMBAVCMARE-UHFFFAOYSA-N [3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methyl [5-(6-aminopurin-9-yl)-2-(hydroxymethyl)oxolan-3-yl] hydrogen phosphate Polymers Cc1cn(C2CC(OP(O)(=O)OCC3OC(CC3OP(O)(=O)OCC3OC(CC3O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c3nc(N)[nH]c4=O)C(COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3CO)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cc(C)c(=O)[nH]c3=O)n3cc(C)c(=O)[nH]c3=O)n3ccc(N)nc3=O)n3cc(C)c(=O)[nH]c3=O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)O2)c(=O)[nH]c1=O JLCPHMBAVCMARE-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 210000001789 adipocyte Anatomy 0.000 description 1
- 238000011166 aliquoting Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229960000723 ampicillin Drugs 0.000 description 1
- 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 1
- HTAGIZQYGRLQQX-UHFFFAOYSA-N amurine Natural products C1C2=CC=3OCOC=3C=C2C23C=C(OC)C(=O)C=C3C1N(C)CC2 HTAGIZQYGRLQQX-UHFFFAOYSA-N 0.000 description 1
- 238000010171 animal model Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000008827 biological function Effects 0.000 description 1
- 229920001222 biopolymer Polymers 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000006143 cell culture medium Substances 0.000 description 1
- 230000025084 cell cycle arrest Effects 0.000 description 1
- 230000012292 cell migration Effects 0.000 description 1
- 230000019522 cellular metabolic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229940044683 chemotherapy drug Drugs 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000010367 cloning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002299 complementary DNA Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
- 210000004748 cultured cell Anatomy 0.000 description 1
- 210000000805 cytoplasm Anatomy 0.000 description 1
- 231100000135 cytotoxicity Toxicity 0.000 description 1
- 230000003013 cytotoxicity Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012377 drug delivery Methods 0.000 description 1
- 210000003890 endocrine cell Anatomy 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000001476 gene delivery Methods 0.000 description 1
- 210000004602 germ cell Anatomy 0.000 description 1
- ZDXPYRJPNDTMRX-UHFFFAOYSA-N glutamine Natural products OC(=O)C(N)CCC(N)=O ZDXPYRJPNDTMRX-UHFFFAOYSA-N 0.000 description 1
- 125000000404 glutamine group Chemical group N[C@@H](CCC(N)=O)C(=O)* 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 210000004524 haematopoietic cell Anatomy 0.000 description 1
- 239000000833 heterodimer Substances 0.000 description 1
- 102000046645 human LIF Human genes 0.000 description 1
- 102000054896 human PML Human genes 0.000 description 1
- 210000005260 human cell Anatomy 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000031146 intracellular signal transduction Effects 0.000 description 1
- 208000012947 ischemia reperfusion injury Diseases 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002502 liposome Substances 0.000 description 1
- 210000004962 mammalian cell Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000013028 medium composition Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007479 molecular analysis Methods 0.000 description 1
- 230000004660 morphological change Effects 0.000 description 1
- 208000025113 myeloid leukemia Diseases 0.000 description 1
- 239000002539 nanocarrier Substances 0.000 description 1
- 239000013642 negative control Substances 0.000 description 1
- 210000000440 neutrophil Anatomy 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 108010043655 penetratin Proteins 0.000 description 1
- MCYTYTUNNNZWOK-LCLOTLQISA-N penetratin Chemical compound C([C@H](NC(=O)[C@H](CC=1C2=CC=CC=C2NC=1)NC(=O)[C@H]([C@@H](C)CC)NC(=O)[C@H](CCCCN)NC(=O)[C@@H](NC(=O)[C@H](CCC(N)=O)NC(=O)[C@@H](N)CCCNC(N)=N)[C@@H](C)CC)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCCN)C(N)=O)C1=CC=CC=C1 MCYTYTUNNNZWOK-LCLOTLQISA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229940049954 penicillin Drugs 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001124 posttranscriptional effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009465 prokaryotic expression Effects 0.000 description 1
- 239000012460 protein solution Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 210000005084 renal tissue Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 108091008146 restriction endonucleases Proteins 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 238000003757 reverse transcription PCR Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000007781 signaling event Effects 0.000 description 1
- 238000012409 standard PCR amplification Methods 0.000 description 1
- 229960005322 streptomycin Drugs 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229940124597 therapeutic agent Drugs 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000012096 transfection reagent Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- OUYCCCASQSFEME-UHFFFAOYSA-N tyrosine Natural products OC(=O)C(N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-UHFFFAOYSA-N 0.000 description 1
- 125000001493 tyrosinyl group Chemical group [H]OC1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])(N([H])[H])C(*)=O 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Images
Landscapes
- Peptides Or Proteins (AREA)
Abstract
本发明涉及基因工程技术领域,本发明的目的在于提供一种将LIFRα-CT3与TAT-PTD技术结合起来的真核表达载体以及在制备抑制白血病细胞增殖药物中的应用,本发明提供了一种真核表达载体,它含有如SEQ IDNO:1所示的核苷酸序列,本发明还提供了上述真核表达载体转染的CHO细胞系,本发明还涉及利用上述CHO细胞系生产的多肽190CT3具有很高的稳定性和穿膜性,可以显著改善临床早幼粒白血病治疗中全反式维甲酸+常规化疗带来的靶向性差,易抗药,药物入胞/入核难的问题。体外实验证实,190CT3多肽直接作用于急性粒系白血病细胞,可迅速穿透细胞膜和核膜,进而抑制其增殖,促进朝成熟粒细胞方向分化。
Description
技术领域
本发明属于基因工程技术领域,具体涉及一种真核表达载体,以及该真核表达载体在制备抑制白血病细胞增殖药物中的应用。
背景技术
白血病抑制因子(Leukemia inhibitory factor,LIF)作为的IL-6细胞因子家族的一员,能够抑制白血病细胞,例如人HL-60、U937、小鼠M1系的增殖。然而,白血病细胞增长快速并对LIF感应能力差的特性,使得机体内有限的LIF无法有效抑制白血病细胞的生长[T.Maekawa,D.Metcalf,Clonalsuppression of HL60 and U937 cells by recombinant human leukemia inhibitoryfactor in combination with GM-CSF or G-CSF,Leukemia 3(1989)270-276;D.P.Gearing,N.M.Gough,J.A.King,D.J.Hilton,N.A.Nicola,R.J.Simpson,E.C.Nice,A.Kelso,D.Metcalf,Molecular cloning and expression of cDNA encoding amurine myeloid leukaemia inhibitory factor(LIF),EMBO J 6(1987)3995-4002;T.Maekawa,D.Metcalf,D.P.Gearing,Enhanced suppression of human myeloidleukemic cell lines by combinations of IL-6,LIF,GM-CSF and G-CSF,Int JCancer 45(1990)353-358.]。而外源性、非生理剂量的LIF对脂肪细胞、生殖细胞和内分泌细胞等正常细胞具有显著的细胞毒性,同时干扰了细胞因子间的正常协调作用,所以LIF的药用价值也不能得到有效地体现[D.Metcalf,N.A.Nicola,D.P.Gearing,Effects of injected leukemia inhibitory factor onhematopoietic and other tissues in mice,Blood 76(1990)50-56.]。
LIF是一种多功能、作用广泛的细胞因子。它的广泛生物学效应是通过结合靶细胞膜上的LIF受体(LIFR)来实现的。LIFR包括两个亚基,LIFRα(gp190)和LIFRβ(gp130)。其中,LIFRα含有1239个氨基酸,胞外区由789个氨基酸构成,跨膜区由26个疏水氨基酸组成,胞内去由238个氨基酸构成。LIFRα的胞内区共有三个功能域(Box1、Box2和Box3),这一官能的主要作用结构为YXXQ(Y为酪氨酸,X为任意氨基酸,Q为谷氨酰胺),是激活细胞内信号分子的必须序列,在LIF-LIFR的信号通路激活过程中,LIF首先与LIFRα结合,并使之与另一受体亚基β结合形成异源性二聚体,进而启动细胞内信号转导,引导胞外的信号转入核内,调控特定基因的表达,使细胞产生一系列的生理或病理变化[Y.Zhang,T.Willson,D.Metcalf,D.Cary,D.J.Hilton,R.Clark,N.A.Nicola,The box-1 region of the leukemia inhibitory factor receptoralpha-chain cytoplasmic domain is sufficient for hemopoietic cell proliferation anddifferentiation,J Biol Chem 273(1998)34370-34383.]。
申请人的前期工作中已证实,通过脂质体转染的方式,将LIFRα细胞内区全长序列(LIFRα-CT)和含Box3功能域的C末端序列(LIFRα-CT3)分别富集于人类急性早幼粒白血病细胞HL-60胞质中,可促进该系白血病细胞的粒细胞方向分化,并有效抑制其增殖潜力[H.Liu,J.Dan,S.Tang,S.Wu,Involving of the cytoplasmic region of leukemia inhibitory factor receptor alphasubunit,IL-6 related signal transducer-gp 130 or fas death domain for MAPKp42/44 activation in HL-60 cell with LIF or anti-Fas IgG,Mol Cell Biochem 217(2001)113-120;H.Liu,S.Liu,S.Tang,K.Ji,F.Wang,S.Hu,Molecular analysisof signaling events mediated by the cytoplasmic domain of leukemia inhibitoryfactor receptor alpha subunit,Mol Cell Biochem 258(2004)15-23;L.Yang,S.R.Liu,S.P.Tang,F.M.Wang,H.Q.Liu,[Effects of the box-3 region of theLIFRalpha-chain cytoplasmic domain(gp190CT3)on the proliferation anddifferentiation of HL-60 cells.],Zhonghua Xue Ye Xue Za Zhi 25(2004)679-682.],这与临床目前治疗急性早幼粒白血病经典方案,即全反式维甲酸+常规化疗药物的治疗原则是完全一致的。但脂质体转染的方式只能应用于体外实验,如何将LIFRα-CT3高效能地在病理性白血病细胞内乃至胞核内富集,仍需进一步探索。
蛋白质转导结构域(protein transduction domain,PTD)或称细胞穿膜肽(cellpenetrating peptides,CPPs)是一条以肽为载体的有效运输各种物质进入细胞及细胞核的系统[Y.Wang,H.Lin,S.Lin,J.Qu,J.Xiao,Y.Huang,Y.Xiao,X.Fu,Y.Yang,X.Li,Cell-penetrating peptide TAT-mediated delivery of acidic FGF toretina and protection against ischemia-reperfusion injury in rats,J Cell Mol Med(2009);V.P.Torchilin,Cell penetrating peptide-modified pharmaceuticalnanocarriers for intracellular drug and gene delivery,Biopolymers 90(2008)604-610.]。通过不同途径,可经PTD携带入胞/核的物质有全长蛋白质、DNA、化学药物、寡核苷酸、40nm磁珠和200nm脂质体等[L.N.Johnson,S.M.Cashman,R.Kumar-Singh,Cell-penetrating peptide for enhanced delivery ofnucleic acids and drugs to ocular tissues including retina and cornea,Mol Ther 16(2008)107-114;W.J.Ryves,A.J.Harwood,Use of a penetratin-linked peptide indictyostelium,Mol Biotechnol 33(2006)123-132.]。目前研究中最常用的PTD是人类免疫缺陷I型病毒(HIV-1)来源的TAT蛋白(TAT-PTD)片段,其全长翻译后仅为11个富含酸性氨基酸的寡肽,与其他PTD比较,TAT-PTD具有短小、高效、不影响下游分子生理功能的优良特性[L.Jiang,Y.Ma,J.Wang,X.Tao,D.Wei,The transduction of His-TAT-p53 fusion protein into the humanosteogenic sarcoma cell line(Saos-2)and its influence on cell cycle arrest andapoptosis,Mol Biol Rep 35(2008)1-8.]。
TAT可以有效地介导外源物质进入细胞。1998年,Nagahara等发现TAT-PTD与其他蛋白融合表达的蛋白质(TAT-蛋白质)能够高效地进入体外培养的细胞,并且表现出生物学功能,具有生物学活性[H.Nagahara,A.M.Vocero-Akbani,E.L.Snyder,A.Ho,D.G.Latham,N.A.Lissy,M.Becker-Hapak,S.A.Ezhevsky,S.F.Dowdy,Transduction of full-length TAT fusion proteins intomammalian cells:TAT-p27Kip1 induces cell migration,Nat Med 4(1998)1449-1452.]。近些时候,严世荣、李敬风等将TAT蛋白的PTD区段编码基因与外源蛋白基因连接表达融合蛋白,再将其转入小鼠体内,发现融合蛋白可以快速到达体内各组织,且表现出较强生物活性[严世荣,严洁,等,Tat-β-半乳糖苷酶对小鼠生物膜穿透性的研究,基础医学与临床22(2002)343-345;李敬风,严洁,方峰,陈宝芳,孙万群,严世荣,Tat融合蛋白在sd大鼠肾组织表达的研究,郧阳医学院学报22(2003)197-199.]。作为蛋白转导结构功能域,TAT-PTD全长仅含11个氨基酸(TAT-PTD49-57:YGRKKRRQRRR),却能将与之连接的近100%的融合物高效带入细胞膜和核膜。故其机制虽仍待进一步阐明,TAT-PTD依然得到了广大科研工作者的广泛应用。总体来说,TAT-PTD的生物学应用主要是通过融合蛋白的形式,利用细菌表达载体与靶基因、靶肽、靶氨基酸等连接来实现的。一般来说,TAT的融合蛋白也都含有某种蛋白“标签”,以利于进一步的纯化。纯化后的TAT融合蛋白可直接应用于体外培养的细胞体系内或实验动物体内。以上技术虽然实用、成熟、蛋白产量充足,但费时费力,经济性差[Barka T,Gresik ES,Henderson SC(2004)Production of celllines secreting tat fusion proteins.J Histochem Cytochem 52(4):469-477]。且原核表达体系得到的融合蛋白缺乏转录后的剪切、翻译修饰,很大程度上存在无生物活性的可能性。
申请人已于2004年3月24日就含有gp190CT3基因的重组表达载体申请了中国专利,并获得授权,专利号为ZL200410017156.7,发明名称为:抑制白血病细胞增殖的重组表达载体。
发明内容
本发明的目的在于提供一种将LIFRα-CT3与TAT-PTD技术结合起来的真核表达载体以及在制备抑制白血病细胞增殖药物中的应用,该真核表达载体不仅能够得到高纯度融合蛋白LIFRα-CT3,而且表达的LIFRα-CT3能够高效地在病理性白血病细胞内乃至胞核内富集。
本发明是在申请人的中国专利ZL200410017156.7基础上,根据采用LIFRα-CT3能激活STAT3分子这一事实,将含有LIFRα的Box3基因的LIFRα-CT3与TAT-PTD紧密结合,构建成含有二者的重组真核表达载体;再通过设计相应引物,使用PCR的方法并插入相应的人体免疫球蛋白IgG重链来源的信号肽序列(N端)和cMyc蛋白纯化标签(C端),本发明的pcDNA3.0-ss-TAT-CT3-cMyc重组质粒及插入片段示意如图1所示。
本发明提供了一种真核表达载体,它含有以下序列-自N端至C端分别含有以下基因片段:人体免疫球蛋白IgG重链来源的信号肽增强子及序列、蛋白转导结构功能区HIV-1型病毒来源的TAT-PTD、gp190-CT3基因、cMyc蛋白纯化标签;具体序列如下:
GCCGCCACCATGGATTTTCAGGTGCAGATTTTCAGCTTCCTGCTAATCAGTGCCTCAGTCATAATATCCAGAGGATATGGCAGGAAGAAGCGGAGACAGCGACGAAGAGGCGGTTATCAGCCTCAAGCAAAACCAGAAGAAGAACAAGAAAATGACCCTGTAGGAGGGGCAGGCTATAAGCCACAGATGCACCTCCCCATTAATTCTACTGTGGAAGATATAGCTGCAGAAGAGGACTTAGATAAAACTGCGGGTTACAGACCTCAGGCCAATGTAAATACATGGAATTTAGTGTCTCCAGACTCTCCTAGATCCATAGACAGCAACAGTGAGATTGTCTCATTTGGAAGTCCATGCTCCATTAATTCCCGACAATTTTTGATTCCTCCTAAAGATGAAGACTCTCCTAAATCTAATGGAGGAGGGTGGTCCTTTACAAACTTTTTTCAGAACAAACCAAACGATGAACAAAAACTCATCTCAGAAGAGGATCTGTAG(如SEQ ID NO:1所示);
上述真核表达载体是pcDNA3.0。
本发明还提供了上述真核表达载体转染入CHO细胞所得的细胞株CHO-190CT3。具体技术方案为:将以上重组载体转染入中国仓鼠卵巢癌细胞(CHO细胞)后加G418筛选,挑取单克隆后大量扩增CHO细胞,得到含有融合蛋白细胞培养基上清。该上清经包被有抗cMyc凝胶的蛋白层析柱纯化,即可得到高纯度的190CT3(如图2所示)。
本发明还提供了上述细胞株CHO-190CT3所制备的蛋白190CT3。
本发明还提供了上述真核表达载体在制备抑制白血病细胞增殖药物中的应用。
本发明的技术方案主要包括以下几部分:
分别合成含有信号肽(ss)、cMyc标签(cMyc),TAT-PTD(TAT)和LIFRα-CT3的相应引物;
经典分子生物学方法(参见《分子克隆实验指南》,美国冷泉港出版社)构建含有以上基因的重组真核质粒pcDNA3.0-190CT3;
转染pcDNA3.0-190CT3入CHO细胞并G418加压筛选,建立高表达pcDNA3.0-190CT3的真核表达细胞株。
收集CHO培养基上清,通过针对cMyc蛋白标签的特异性蛋白层析柱纯化得到融合蛋白190CT3。
本发明经体外实验发现,浓度30μg/ml时,190CT3针对人早幼粒白血病细胞HL-60具有高效穿膜性,可在30分钟内穿入透胞膜/核膜;进一步研究发现,190CT3可以替代LIF,启动信号转导,抑制早幼粒白血病细胞的生长,促进其朝粒细胞方向分化,且无明显毒副作用,因而可作为针对早幼粒白血病细胞的特异性蛋白治疗剂(如图3与图4的示)。
本发明公开了表达抑制急性粒细胞白血病(M1和M3)增殖的190CT多肽的真核表达载体以及CHO细胞系,其含有蛋白转导结构功能域(HIV1-TAT)及白血病抑制因子(LIF)受体α亚基胞内区含功能域Box-3的C-末端序列的基因。本发明得到的多肽190CT3具有很高的稳定性和穿膜性,可以显著改善临床早幼粒白血病治疗中全反式维甲酸+常规化疗带来的靶向性差,易抗药,药物入胞/入核难的问题。体外实验证实,190CT3多肽直接作用于急性粒系白血病细胞,可迅速穿透细胞膜和核膜,进而抑制其增殖,促进朝成熟粒细胞方向分化。
附图说明
图1:pcDNA3.0-190CT3重组质粒及插入片段示意图。
图2:转染了pcDNA3.0-190CT3分泌的上清经纯化、浓缩后,考马斯亮蓝染色和免疫印迹染色的结果(其中ss-CT3-cMyc是转染了pcDNA3.0-ss-CT3-cMyc的CHO细胞株所做对照)。
图3:不同时间点下,免疫荧光术检测浓度为30μg/ml的融合蛋白加入HL-60培养基后,入胞和入核的效率对照,
其中A:PBS阴性对照;B:ss-CT3-cMyc组;C:ss-TAT-CT3-cMyc组。图4:同一时间点(1h),免疫荧光术标记不同浓度的融合蛋白190CT3加入HL-60培养基后,入胞/入核量与剂量的对应关系。
具体实施方式
下面结合附图和实施例对本发明作详细描述,但本发明的实施例仅用于说明本发明而不用于限制本发明的保护范围。
实施例1:构建pcDNA3.0-190CT3真核表达载体
1.1所需试剂
限制性内切酶Sal I,Nhe I,Xho I和BamH I均购于上海英骏公司(Invitrogen,上海)。DNA聚合酶、PCR产物纯化试剂盒、胶回收试剂盒购于宝生物工程有限公司(Takara,大连)。真核表达载体pcDNA3.0购于美国Invitrogen公司(Carlsbad,CA,USA)。鼠抗人cMyc表位(标签)单克隆抗体购于Santa Cruz公司(Santa Cruz,CA,USA);FITC标记的荧光山羊抗鼠二抗购于上海康成公司(康成,上海)。以下所有引物合成均由上海英骏(Invitrogen,上海)完成。
1.2真核载体pcDNA3.0-190CT3的构建准备
以真核表达载体pcDNA3.0-gp190CT3为模板(制备方法参见中国专利ZL200410017156.7),采用标准PCR扩增流程(94℃30s,56℃30s,72℃30s,30个循环),和以下引物完成:
上游引物:
5’-CGCGCCGCCACCATGGATTTTCAGGTGCAGATTTTCAGCTTC CTGCTAATCAGTGCCTCAGTCATAATATCCAGAGGA CGC TATCAGCCT-3’(如SEQ ID NO:2所示)
下游引物:
其中上游引物含有BamH I,Nhe I,Sal I三个酶切位点(方框)和人IgG重链来源的信号肽序列(下划线);下游引物含有Xho I酶切位点(方框内)和cMyc蛋白纯化标签全长(下划线)。以上PCR产物约含492个碱基对(bp)
(序列为:CGCGGATCCGCCGCCACCATGGATTTTCAGGTGCAGATTTTCAGCTTCCTGCTAATCAGTGCCTCAGTCATAATATCCAGAGGAGCTAGCCGCGTCGACTATCAGCCTCAAGCAAAACCAGAAGAAGAACAAGAAAATGACCCTGTAGGAGGGGCAGGCTATAAGCCACAGATGCACCTCCCCATTAATTCTACTGTGGAAGATATAGCTGCAGAAGAGGACTTAGATAAAACTGCGGGTTACAGACCTCAGGCCAATGTAAATACATGGAATTTAGTGTCTCCAGACTCTCCTAGATCCATAGACAGCAACAGTGAGATTGTCTCATTTGGAAGTCCATGCTCCATTAATTCCCGACAATTTTTGATTCCTCCTAAAGATGAAGACTCTCCTAAATCTAATGGAGGAGGGTGGTCCTTTACAAACTTTTTTCAGAACAAACCAAACGATGAACAAAAACTCATCTCAGAAGAGGATCTGTAGCTCGAGCGG),经常规电泳,胶回收后,测序正确率为100%。
针对TAT-PTD的插入片段(Genbank Accession No.AAT48070;TATGGCAGGAAGAAGCGGAGACAGCGACGAAGA),首先,由Invitrogen公司合成两条核苷酸链,序列分别为
上游:5’-CTAGCTATGGCAGGAAGAAGCGGAGACAGCGACGAAGAG-3’(如SEQ ID NO:4所示);
下游:5’-TCGACTCTTCGTCGCTGTCTCCGCTTCTTCGTGCCATAG-3’(如SEQ ID NO:5所示)。
此两条核苷酸链含有互补的TAT-PTD序列(下划线),并在两端分别设计有针对Nhe I和Sal I的粘性末端。经常规去火程序(等体积混合两核苷酸链,95℃2min后在45min内冷却至25℃)后直接放入4℃保存。
1.3真核载体pcDNA3.0-190CT3的构建
按常规流程,用BamH I和Xho I内切酶分别酶切以上PCR产物和载体pcDNA3.0,用胶回收试剂盒回收酶切后的DNA片段,然后以基因片段与载体片段摩尔比约3∶1进行连接反应。反应体系(10μl)包括:T4连接酶缓冲液1μl,载体片段50ng,基因片段20ng,T4连接酶1μl,余用去离子水补足。反应混合物置于16℃连接过夜,然后取全部连接产物置于100μl的DH5α感受态细菌中,0℃冰浴30min,43℃热休克90s,二次冰浴2min,加入LB培养基800μl,37℃培养1h,5000rpm离心5min,弃掉800μl上清,将菌体均匀涂布于50μg/ml氨苄青霉素的LB平板上,37℃倒置培养18h。从转化的平皿中挑去若干独立菌落接种于3ml含相应抗性的LB培养基中,37℃震摇12h后送上海英骏公司测序。经测序鉴定,获得pcDNA3.0-ss-CT3-cMyc重组质粒。对真核载体pcDNA3.0-190CT3,则用Nhe I和Sal I内切酶酶切以上载体pcDNA3.0-ss-CT3-cMyc,用胶回收试剂盒回收酶切后的DNA片段,然后将以上去火后的TAT-PTD插入片段片段与载体片段以摩尔比约3∶1进行连接反应。连接后转化、涂板、挑克隆、测序操作与前述相同。经最终测序鉴定,可得pcDNA3.0-ss-TAT-CT3-cMyc(pcDNA3.0-190CT3)重组质粒。
实施例2:建立稳定的pcDNA3.0-190CT3重组CHO细胞株
首先确定筛选培养基中合适的G418(Invitrogen)浓度,方法如下:24孔细胞培养板接种每孔1000个CHO细胞,并加G418使其浓度分别为500、1000、2000、3000μg/ml,选择能在10~14天把细胞彻底杀死的孔作为G418的筛选浓度。
参照转染试剂Fugene 6操作说明书转染pcDNA3.0-190CT3至CHO细胞。转染后24小时,按1∶10比例进行细胞传代,用含有3000μg/ml G418的压力筛选培养液筛选培养细胞,10~14天后,用克隆环圈住具有新霉素抗性的细胞克隆集落,胰酶消化下后依次于96孔、24孔和6孔细胞培养板扩大培养。筛选出的不同细胞克隆按照0.5×106个细胞接种于6孔板中生长至密度为90%左右时,胰酶消化下细胞后,使用RT-PCR方法检测相关基因的表达,所用引物如下:
上游:5’-GGAGACAGCGACGAA-3’;
下游:5’-TTGTAAAGGACCACCC-3’;
所用内参为Hirp3,引物序列如下:
上游:5’-CGTTATATTCGGGCTTGTGG-3’;
下游:5’-GGTCGACCTGAACTGCTGAT-3’。
选择表达水平最高的克隆扩增并按常规方法冻存细胞,命名为CHO-190CT3。
实施例3:融合蛋白190CT3的分离与纯化
将以上CHO-190CT3细胞株按照以下培养基成分,在75cm2培养瓶中进行扩大培养:90%RPMI 1640培养基,9%胎牛血清(FBS),1%青链霉素,并在传代细胞贴壁后添加3000μg/ml G418新霉素。培养条件为37℃+5%CO2。待细胞融合至70~80%时,将培养基更换15ml 100%RPMI 1640培养基。72小时后回收上清,10000rpm离心20min去除细胞碎片,将剩余上清马上置于-20℃保存。重复以上上清回收程序直至回收量达到1L。在使用蛋白层析柱纯化相关蛋白前,将上清置于4℃,使其缓慢融化,然后通过0.45μm滤器去除可能的杂质、死细胞及细胞碎片,准备上样至蛋白层析柱。
使用Sigma-Aldrich公司生产的针对cMyc蛋白标签的凝胶(ANTI-c-MycAGAROSE CONJUGATE,A7470,Sigma Aldrich,USA)包被蛋白层析柱。包被完成后严格按照说明书冰上操作。得到的溶于氨水的融合蛋白溶液使用1N醋酸进行中和,使其pH值维持在约7.0。然后,使用4℃离心机和3000MWCO超滤管(Millipore,上海),3500rpm离心浓缩至约2ml,分装后-80℃冻存备用。
融合蛋白的浓度测定使用上海生工公司的BCA蛋白浓度测定试剂盒进行。
转染了pcDNA3.0-190CT3及其对照质粒pcDNA3.0-ss-CT3-cMyc的CHO分泌的上清经纯化、浓缩后,考马斯亮蓝染色和免疫印迹染色的结果显示,与空白对照PBS相比,pcDNA3.0-ss-CT3-cMyc与pcDNA3.0-190CT3组均在18kDa左右出现了明显蛋白条带;从左至右,第1~第4泳道,考马斯亮蓝染色;第5~第7泳道,使用cMyc标签特异性抗体标记的免疫印迹实验。
实施例4:急性早幼粒白血病细胞HL-60实验(体外实验)
利用免疫荧光、细胞计数、流式细胞仪、免疫印迹等分子生物学实验方法,从形态学、相关蛋白表达量、融合蛋白入胞/入核情况及磷酸化水平等方面分析细胞形态变化;STAT3分子磷酸化、Jak2分子磷酸化水平及粒细胞表明标志物CD14和CD15来分析融合蛋白对HL-60细胞分化与增殖的影响。
具体方法如下:
1)细胞生长状态的比较
按照30μg/ml的终浓度将以上纯化后的融合蛋白加入标准HL-60细胞培养体系中,用倒置相差显微镜观察按照不同时间点(1~7天)排列的HL-60细胞及野生型HL-60细胞(每24小时补充添加融合蛋白一次),7天内可见加入融合蛋白后的HL-60细胞组与野生型HL-60细胞相比,细胞密度偏小,将2组分别计数后绘制细胞生长曲线。结果显示:添加有融合蛋白190CT3的HL-60细胞组增殖明显趋缓。
2)细胞分化水平的比较
将以上实验组和对照组HL-60细胞在7天时,通过流式细胞仪检测粒细胞表面分化抗原CD14和CD11b的表达差异。使用BD公司提供的(BectonDickinson,Franklin Lakes,NJ,USA)流式细胞仪和CD14,CD11b抗体,严格按照说明书操作,结果使用FACSCalibur和CELLQuest 3.0版本的软件进行分析处理(Becton Dickson,San Jose,CA,USA)。结果显示,与野生型HL-60细胞比较,实验组HL-60细胞的CD14与CD11b均显著提高,证实融合蛋白190CT3可在短时间内促进急性早幼粒白血病细胞朝粒细胞方向分化。
3)免疫荧光检测融合蛋白190CT3的入胞/入核情况
制备以上实验组与对照组HL-60的细胞图片,方法记述于(J.P.Bach,H.Borta,W.Ackermann,F.Faust,O.Borchers,M.Schrader,The secretory granuleprotein syncollin localizes to HL-60 cells and neutrophils,J Histochem Cytochem54(2006)877-888.)一文中。用免疫荧光术检测LIFRα的表达情况。一抗为兔抗人LIFRα抗体(Santa Cruz,USA);二抗为FITC标记的山羊抗兔IgG(北京中山生物技术有限公司)。结果:经融合蛋白190CT3刺激后的HL-60细胞与野生型HL-60(LIFRα阴性)相比,30分钟内即可在1.0×105个早幼粒白血病HL-60细胞、胞核内均显示LIFRα强阳性,且此阳性结果在8h后仍可检测到(图3)。而在同一时间点(1h)上,免疫荧光术标记不同浓度的融合蛋白190CT3加入HL-60培养基后,入胞/入核量与剂量的对应关系如下:随着融合蛋白浓度的不断增加,进入HL-60细胞的蛋白量(以荧光强度示)在30μg/ml 190CT3时达到顶峰,与之相比,即使190CT3量增至50μg/ml时亦未见荧光强度明显增强(图4)。这说明融合蛋白190CT3可高效进入HL-60细胞,并参与细胞的代谢和细胞通路变化。
上述实验证实:本发明的重组融合蛋白表达载体pcDNA3.0-190CT3通过真核表达体系CHO细胞的高效表达,可分泌重组融合蛋白190CT3;该重组融合蛋白在经过cMyc蛋白层析柱纯化后能在短时间内高效率的进入白血病细胞,并最终导致其增殖受抑制,粒系分化程度增高。这说明190CT3融合蛋白可代替LIF启动STAT3信号通路,抑制白血病细胞的增殖并促进其向粒细胞方向分化。
因而,本发明重组表达载体可用于制备抑制白血病细胞增殖的靶向性蛋白药物。
Claims (8)
1.一种真核表达载体,它含有如SEQ ID NO:1所示的核苷酸序列。
2.根据权利要求1所述的真核表达载体,其特征在于该真核表达载体是pcDNA3.0。
3.用权利要求1或2所述的真核表达载体转染入中国仓鼠卵巢癌细胞所得的细胞株。
4.根据权利要求3所述的细胞株制备的蛋白。
5.权利要求1或2所述的真核表达载体制备的蛋白。
6.权利要求4所述的蛋白在制备抑制白血病细胞增殖药物中的应用。
7.权利要求5所述的蛋白在制备抑制白血病细胞增殖药物中的应用。
8.权利要求1或2所述的真核表达载体在制备抑制白血病细胞增殖药物中的应用。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010576421A CN102080098B (zh) | 2010-12-07 | 2010-12-07 | 一种真核表达载体以及在制备抑制白血病细胞增殖药物中的应用 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010576421A CN102080098B (zh) | 2010-12-07 | 2010-12-07 | 一种真核表达载体以及在制备抑制白血病细胞增殖药物中的应用 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102080098A true CN102080098A (zh) | 2011-06-01 |
| CN102080098B CN102080098B (zh) | 2012-10-17 |
Family
ID=44086288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010576421A Expired - Fee Related CN102080098B (zh) | 2010-12-07 | 2010-12-07 | 一种真核表达载体以及在制备抑制白血病细胞增殖药物中的应用 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102080098B (zh) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563391A (zh) * | 2004-03-24 | 2005-01-12 | 中国人民解放军第二军医大学 | 抑制白血病细胞增殖的重组表达载体 |
| CN1760208A (zh) * | 2004-10-15 | 2006-04-19 | 苏先狮 | 一种人野生型p53融合蛋白 |
-
2010
- 2010-12-07 CN CN201010576421A patent/CN102080098B/zh not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563391A (zh) * | 2004-03-24 | 2005-01-12 | 中国人民解放军第二军医大学 | 抑制白血病细胞增殖的重组表达载体 |
| CN1760208A (zh) * | 2004-10-15 | 2006-04-19 | 苏先狮 | 一种人野生型p53融合蛋白 |
Non-Patent Citations (2)
| Title |
|---|
| 《TRENDS in Molecular Medicine》 20071004 Jacob M. Gump and Steven F. Dowdy TAT transduction: the molecular mechanism and therapeutic prospects 第443-448页 1-8 第13卷, 第10期 2 * |
| 《万方数据资源系统--中国学位论文全文库》 20081231 姚云 190CT3多肽调节白血病细胞增殖分化 第1-85页 1-8 , 2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102080098B (zh) | 2012-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US12286632B2 (en) | Rationally-designed synthetic peptide shuttle agents for delivering polypeptide cargos from an extracellular space to the cytosol and/or nucleus of a target eukaryotic cell, uses thereof, methods and kits relating to same | |
| DK2970512T3 (en) | IMMUNO MODULATOR FUSION PROTEINS AND PROCEDURES FOR PRODUCING THEREOF | |
| US10640570B2 (en) | Chimeric antigen receptors, compositions, and methods | |
| CN102250245B (zh) | 抗b细胞淋巴瘤的双特异性抗体及其用途 | |
| EP2930188A1 (en) | Trifunctional antigen-binding molecule | |
| CN106255699B (zh) | 细胞穿透肽和使用其输送生物活性物质的方法 | |
| CN104704126A (zh) | 在酵母表达系统中利用人内质网分子伴侣蛋白天然信号序列产生天然重组的分泌的人内质网分子伴侣蛋白 | |
| KR101778244B1 (ko) | 세포 투과성 펩티드 및 이를 이용한 생물학적 활성 물질의 전달방법 | |
| CN110022907A (zh) | 非细胞毒性的修饰细胞及其用途 | |
| AU2022487460A1 (en) | Fusion gene containing encoding gene of chimeric antigen receptor and encoding gene of chimeric switch receptor and use thereof | |
| CN104974262A (zh) | 新型重组双功能融合蛋白及其制法和用途 | |
| JP7542830B2 (ja) | 分子の細胞内送達のための複合体 | |
| US20250388695A1 (en) | Epcam-cd3 epsilon bispecific antibodies | |
| CN101914161B (zh) | 抑制肿瘤生长的融合蛋白HGFα-Fc及其用途 | |
| CN102080098B (zh) | 一种真核表达载体以及在制备抑制白血病细胞增殖药物中的应用 | |
| US20230226157A1 (en) | Anti-tumor fusion protein, preparation method therefor and application thereof | |
| KR101636538B1 (ko) | 인간 NLBP 유래의 NP2 폴리펩티드 또는 dNP2 폴리펩티드를 포함하는 세포 투과 펩티드 및 이를 이용한 카고 전달 시스템 | |
| EP4653455A1 (en) | Mutated pd1 ectodomain fragment and car containing same, and nk cell | |
| WO2018109771A1 (en) | Fusion proteins for treatment of cancer | |
| WO2018154584A1 (en) | Chimeras of soluble dr3 and pro-tace domain and use thereof | |
| EP1605964B1 (en) | TARGETED PROTEIN DEGRADATION VEHICLES (TPDVs), NUCLEIC ACID CONSTRUCTS ENCODING THEM AND THEIR USE | |
| KR101461750B1 (ko) | 인간 lpin3 단백질 유래의 세포 투과 펩티드 및 이를 이용한 카고 전달 시스템 | |
| KR102201154B1 (ko) | 폴리글루타메이트-TAT-Cre 융합 단백질의 제조방법 | |
| CN108342405A (zh) | Il21融合蛋白及其制备方法和在制备靶向治疗肿瘤药物中的用途 | |
| KR20140046996A (ko) | 인간 nlbp 유래의 np12 폴리펩티드 또는 np21 폴리펩티드를 포함하는 세포 투과 펩티드 및 이를 이용한 카고 전달 시스템 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20151207 |
|
| EXPY | Termination of patent right or utility model |






