CN112979778B - 介导外源蛋白内吞的多肽和核酸及其应用和在异足新米虾中进行基因编辑的方法 - Google Patents
介导外源蛋白内吞的多肽和核酸及其应用和在异足新米虾中进行基因编辑的方法 Download PDFInfo
- Publication number
- CN112979778B CN112979778B CN201911283525.XA CN201911283525A CN112979778B CN 112979778 B CN112979778 B CN 112979778B CN 201911283525 A CN201911283525 A CN 201911283525A CN 112979778 B CN112979778 B CN 112979778B
- Authority
- CN
- China
- Prior art keywords
- nucleic acid
- protein
- polypeptide
- shrimps
- endocytosis
- 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.)
- Active
Links
- 108090000623 proteins and genes Proteins 0.000 title claims abstract description 82
- 102000004169 proteins and genes Human genes 0.000 title claims abstract description 71
- 108090000765 processed proteins & peptides Proteins 0.000 title claims abstract description 31
- 229920001184 polypeptide Polymers 0.000 title claims abstract description 29
- 102000004196 processed proteins & peptides Human genes 0.000 title claims abstract description 29
- 108020004707 nucleic acids Proteins 0.000 title claims abstract description 26
- 102000039446 nucleic acids Human genes 0.000 title claims abstract description 26
- 150000007523 nucleic acids Chemical class 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000012202 endocytosis Effects 0.000 title claims abstract description 20
- 238000010362 genome editing Methods 0.000 title claims abstract description 15
- 241000143060 Americamysis bahia Species 0.000 title 1
- 108091033409 CRISPR Proteins 0.000 claims abstract description 20
- 241000238557 Decapoda Species 0.000 claims description 49
- 102000037865 fusion proteins Human genes 0.000 claims description 17
- 108020001507 fusion proteins Proteins 0.000 claims description 17
- 210000000287 oocyte Anatomy 0.000 claims description 14
- 239000002773 nucleotide Substances 0.000 claims description 8
- 125000003729 nucleotide group Chemical group 0.000 claims description 8
- 230000006614 vitellogenesis Effects 0.000 claims description 8
- 230000004927 fusion Effects 0.000 claims description 7
- 241000894006 Bacteria Species 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000013613 expression plasmid Substances 0.000 claims description 5
- 108091027544 Subgenomic mRNA Proteins 0.000 claims description 3
- 241000607757 Xenorhabdus Species 0.000 claims description 3
- 241001454399 Metapenaeus Species 0.000 claims 1
- 125000003275 alpha amino acid group Chemical group 0.000 claims 1
- 108010090932 Vitellogenins Proteins 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 210000001161 mammalian embryo Anatomy 0.000 abstract description 4
- 238000000520 microinjection Methods 0.000 abstract description 3
- 241000447803 Neocaridina Species 0.000 abstract description 2
- -1 RNP compound Chemical class 0.000 abstract description 2
- 230000001404 mediated effect Effects 0.000 abstract description 2
- 235000018102 proteins Nutrition 0.000 description 52
- 208000020294 von Willebrand disease 1 Diseases 0.000 description 33
- 208000017129 von Willebrand disease 2 Diseases 0.000 description 23
- 239000000243 solution Substances 0.000 description 20
- 210000002149 gonad Anatomy 0.000 description 18
- 238000005406 washing Methods 0.000 description 18
- 108091032973 (ribonucleotides)n+m Proteins 0.000 description 16
- 238000001514 detection method Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000002347 injection Methods 0.000 description 14
- 239000007924 injection Substances 0.000 description 14
- 108020004414 DNA Proteins 0.000 description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- 239000012528 membrane Substances 0.000 description 12
- 238000001262 western blot Methods 0.000 description 12
- 239000002033 PVDF binder Substances 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 11
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 11
- 210000004027 cell Anatomy 0.000 description 10
- 238000002415 sodium dodecyl sulfate polyacrylamide gel electrophoresis Methods 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 9
- 239000012634 fragment Substances 0.000 description 9
- 241001653769 Heteropoda Species 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 238000000746 purification Methods 0.000 description 8
- 239000006228 supernatant Substances 0.000 description 8
- 238000011534 incubation Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000013612 plasmid Substances 0.000 description 7
- 239000003755 preservative agent Substances 0.000 description 7
- 230000002335 preservative effect Effects 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 241000803964 Neocaridina heteropoda Species 0.000 description 6
- 102000004389 Ribonucleoproteins Human genes 0.000 description 6
- 108010081734 Ribonucleoproteins Proteins 0.000 description 6
- 230000002776 aggregation Effects 0.000 description 6
- 238000004220 aggregation Methods 0.000 description 6
- 239000000499 gel Substances 0.000 description 6
- 238000001502 gel electrophoresis Methods 0.000 description 6
- 230000014509 gene expression Effects 0.000 description 6
- 238000002791 soaking Methods 0.000 description 6
- 238000010354 CRISPR gene editing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 210000002969 egg yolk Anatomy 0.000 description 5
- 238000001962 electrophoresis Methods 0.000 description 5
- 238000001727 in vivo Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000002611 ovarian Effects 0.000 description 5
- 210000001672 ovary Anatomy 0.000 description 5
- 238000004153 renaturation Methods 0.000 description 5
- 239000013598 vector Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 241000238424 Crustacea Species 0.000 description 4
- 150000001413 amino acids Chemical group 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 4
- 239000007853 buffer solution Substances 0.000 description 4
- 238000010828 elution Methods 0.000 description 4
- 239000002609 medium Substances 0.000 description 4
- 239000013641 positive control Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000010839 reverse transcription Methods 0.000 description 4
- 208000012137 von Willebrand disease (hereditary or acquired) Diseases 0.000 description 4
- 238000010356 CRISPR-Cas9 genome editing Methods 0.000 description 3
- 108010000912 Egg Proteins Proteins 0.000 description 3
- 102000002322 Egg Proteins Human genes 0.000 description 3
- 102000004190 Enzymes Human genes 0.000 description 3
- 108090000790 Enzymes Proteins 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 108700026244 Open Reading Frames Proteins 0.000 description 3
- 102000007056 Recombinant Fusion Proteins Human genes 0.000 description 3
- 108010008281 Recombinant Fusion Proteins Proteins 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 239000011543 agarose gel Substances 0.000 description 3
- 238000000246 agarose gel electrophoresis Methods 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 238000010367 cloning Methods 0.000 description 3
- 239000002299 complementary DNA Substances 0.000 description 3
- 238000000502 dialysis Methods 0.000 description 3
- 235000013601 eggs Nutrition 0.000 description 3
- 238000001976 enzyme digestion Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000000799 fluorescence microscopy Methods 0.000 description 3
- 239000001963 growth medium Substances 0.000 description 3
- 210000000087 hemolymph Anatomy 0.000 description 3
- 239000003446 ligand Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 238000012404 In vitro experiment Methods 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000012880 LB liquid culture medium Substances 0.000 description 2
- YBAFDPFAUTYYRW-UHFFFAOYSA-N N-L-alpha-glutamyl-L-leucine Natural products CC(C)CC(C(O)=O)NC(=O)C(N)CCC(O)=O YBAFDPFAUTYYRW-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000013604 expression vector Substances 0.000 description 2
- 238000001917 fluorescence detection Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 235000014304 histidine Nutrition 0.000 description 2
- 150000002411 histidines Chemical class 0.000 description 2
- 229930027917 kanamycin Natural products 0.000 description 2
- 229960000318 kanamycin Drugs 0.000 description 2
- SBUJHOSQTJFQJX-NOAMYHISSA-N kanamycin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N SBUJHOSQTJFQJX-NOAMYHISSA-N 0.000 description 2
- 229930182823 kanamycin A Natural products 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000031787 nutrient reservoir activity Effects 0.000 description 2
- 210000004681 ovum Anatomy 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000751 protein extraction Methods 0.000 description 2
- 239000012460 protein solution Substances 0.000 description 2
- 230000010837 receptor-mediated endocytosis Effects 0.000 description 2
- 102000005962 receptors Human genes 0.000 description 2
- 108020003175 receptors Proteins 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 108091008146 restriction endonucleases Proteins 0.000 description 2
- 235000020183 skimmed milk Nutrition 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000000863 vitellogenic effect Effects 0.000 description 2
- GFBLJMHGHAXGNY-ZLUOBGJFSA-N Ala-Asn-Asp Chemical compound [H]N[C@@H](C)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(O)=O)C(O)=O GFBLJMHGHAXGNY-ZLUOBGJFSA-N 0.000 description 1
- GORKKVHIBWAQHM-GCJQMDKQSA-N Ala-Asn-Thr Chemical compound [H]N[C@@H](C)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H]([C@@H](C)O)C(O)=O GORKKVHIBWAQHM-GCJQMDKQSA-N 0.000 description 1
- DFCIPNHFKOQAME-FXQIFTODSA-N Arg-Ala-Asn Chemical compound [H]N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](C)C(=O)N[C@@H](CC(N)=O)C(O)=O DFCIPNHFKOQAME-FXQIFTODSA-N 0.000 description 1
- FANGHKQYFPYDNB-UBHSHLNASA-N Asn-Asp-Trp Chemical compound C1=CC=C2C(=C1)C(=CN2)C[C@@H](C(=O)O)NC(=O)[C@H](CC(=O)O)NC(=O)[C@H](CC(=O)N)N FANGHKQYFPYDNB-UBHSHLNASA-N 0.000 description 1
- PQAIOUVVZCOLJK-FXQIFTODSA-N Asn-Gln-Gln Chemical compound C(CC(=O)N)[C@@H](C(=O)N[C@@H](CCC(=O)N)C(=O)O)NC(=O)[C@H](CC(=O)N)N PQAIOUVVZCOLJK-FXQIFTODSA-N 0.000 description 1
- MSBDSTRUMZFSEU-PEFMBERDSA-N Asn-Glu-Ile Chemical compound [H]N[C@@H](CC(N)=O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H]([C@@H](C)CC)C(O)=O MSBDSTRUMZFSEU-PEFMBERDSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000510672 Cuminum Species 0.000 description 1
- 102000053602 DNA Human genes 0.000 description 1
- 102000012410 DNA Ligases Human genes 0.000 description 1
- 108010061982 DNA Ligases Proteins 0.000 description 1
- ZWABFSSWTSAMQN-KBIXCLLPSA-N Glu-Ile-Ala Chemical compound [H]N[C@@H](CCC(O)=O)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C)C(O)=O ZWABFSSWTSAMQN-KBIXCLLPSA-N 0.000 description 1
- UHPAZODVFFYEEL-QWRGUYRKSA-N Gly-Leu-Leu Chemical compound CC(C)C[C@@H](C(O)=O)NC(=O)[C@H](CC(C)C)NC(=O)CN UHPAZODVFFYEEL-QWRGUYRKSA-N 0.000 description 1
- YXTFLTJYLIAZQG-FJXKBIBVSA-N Gly-Thr-Arg Chemical compound NCC(=O)N[C@@H]([C@H](O)C)C(=O)N[C@H](C(O)=O)CCCN=C(N)N YXTFLTJYLIAZQG-FJXKBIBVSA-N 0.000 description 1
- 108020005004 Guide RNA Proteins 0.000 description 1
- VXZZUXWAOMWWJH-QTKMDUPCSA-N His-Thr-Val Chemical compound [H]N[C@@H](CC1=CNC=N1)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](C(C)C)C(O)=O VXZZUXWAOMWWJH-QTKMDUPCSA-N 0.000 description 1
- 102100034343 Integrase Human genes 0.000 description 1
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 description 1
- KSZCCRIGNVSHFH-UWVGGRQHSA-N Leu-Arg-Gly Chemical compound [H]N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)NCC(O)=O KSZCCRIGNVSHFH-UWVGGRQHSA-N 0.000 description 1
- ZTLGVASZOIKNIX-DCAQKATOSA-N Leu-Gln-Glu Chemical compound CC(C)C[C@@H](C(=O)N[C@@H](CCC(=O)N)C(=O)N[C@@H](CCC(=O)O)C(=O)O)N ZTLGVASZOIKNIX-DCAQKATOSA-N 0.000 description 1
- HYMLKESRWLZDBR-WEDXCCLWSA-N Leu-Gly-Thr Chemical compound CC(C)C[C@H](N)C(=O)NCC(=O)N[C@@H]([C@@H](C)O)C(O)=O HYMLKESRWLZDBR-WEDXCCLWSA-N 0.000 description 1
- FBNPMTNBFFAMMH-AVGNSLFASA-N Leu-Val-Arg Chemical compound CC(C)C[C@H](N)C(=O)N[C@@H](C(C)C)C(=O)N[C@H](C(O)=O)CCCN=C(N)N FBNPMTNBFFAMMH-AVGNSLFASA-N 0.000 description 1
- 101710085938 Matrix protein Proteins 0.000 description 1
- 101710127721 Membrane protein Proteins 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241001529936 Murinae Species 0.000 description 1
- 101710163270 Nuclease Proteins 0.000 description 1
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 238000002944 PCR assay Methods 0.000 description 1
- 238000002123 RNA extraction Methods 0.000 description 1
- 108010092799 RNA-directed DNA polymerase Proteins 0.000 description 1
- 102000006382 Ribonucleases Human genes 0.000 description 1
- 108010083644 Ribonucleases Proteins 0.000 description 1
- 241001052560 Thallis Species 0.000 description 1
- YSXYEJWDHBCTDJ-DVJZZOLTSA-N Thr-Gly-Trp Chemical compound C[C@H]([C@@H](C(=O)NCC(=O)N[C@@H](CC1=CNC2=CC=CC=C21)C(=O)O)N)O YSXYEJWDHBCTDJ-DVJZZOLTSA-N 0.000 description 1
- AMXMBCAXAZUCFA-RHYQMDGZSA-N Thr-Leu-Arg Chemical compound [H]N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(O)=O AMXMBCAXAZUCFA-RHYQMDGZSA-N 0.000 description 1
- HOVLHEKTGVIKAP-WDCWCFNPSA-N Thr-Leu-Gln Chemical compound [H]N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(N)=O)C(O)=O HOVLHEKTGVIKAP-WDCWCFNPSA-N 0.000 description 1
- BIBYEFRASCNLAA-CDMKHQONSA-N Thr-Phe-Gly Chemical compound C[C@@H](O)[C@H](N)C(=O)N[C@H](C(=O)NCC(O)=O)CC1=CC=CC=C1 BIBYEFRASCNLAA-CDMKHQONSA-N 0.000 description 1
- BZTSQFWJNJYZSX-JRQIVUDYSA-N Thr-Tyr-Asp Chemical compound [H]N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC1=CC=C(O)C=C1)C(=O)N[C@@H](CC(O)=O)C(O)=O BZTSQFWJNJYZSX-JRQIVUDYSA-N 0.000 description 1
- VTHNLRXALGUDBS-BPUTZDHNSA-N Trp-Gln-Glu Chemical compound C1=CC=C2C(=C1)C(=CN2)C[C@@H](C(=O)N[C@@H](CCC(=O)N)C(=O)N[C@@H](CCC(=O)O)C(=O)O)N VTHNLRXALGUDBS-BPUTZDHNSA-N 0.000 description 1
- UKWSFUSPGPBJGU-VFAJRCTISA-N Trp-Leu-Thr Chemical compound C[C@H]([C@@H](C(=O)O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CC1=CNC2=CC=CC=C21)N)O UKWSFUSPGPBJGU-VFAJRCTISA-N 0.000 description 1
- DANHCMVVXDXOHN-SRVKXCTJSA-N Tyr-Asp-Asn Chemical compound NC(=O)C[C@@H](C(O)=O)NC(=O)[C@H](CC(O)=O)NC(=O)[C@@H](N)CC1=CC=C(O)C=C1 DANHCMVVXDXOHN-SRVKXCTJSA-N 0.000 description 1
- SCBITHMBEJNRHC-LSJOCFKGSA-N Val-Asp-Val Chemical compound CC(C)[C@@H](C(=O)N[C@@H](CC(=O)O)C(=O)N[C@@H](C(C)C)C(=O)O)N SCBITHMBEJNRHC-LSJOCFKGSA-N 0.000 description 1
- URIRWLJVWHYLET-ONGXEEELSA-N Val-Gly-Leu Chemical compound CC(C)C[C@@H](C(O)=O)NC(=O)CNC(=O)[C@@H](N)C(C)C URIRWLJVWHYLET-ONGXEEELSA-N 0.000 description 1
- 108010017596 Vitellins Proteins 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000007605 air drying Methods 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
- 238000003149 assay kit Methods 0.000 description 1
- 238000003766 bioinformatics method Methods 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 210000005242 cardiac chamber Anatomy 0.000 description 1
- 101150038500 cas9 gene Proteins 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 235000013345 egg yolk Nutrition 0.000 description 1
- 230000013020 embryo development Effects 0.000 description 1
- 210000002257 embryonic structure Anatomy 0.000 description 1
- 108010048367 enhanced green fluorescent protein Proteins 0.000 description 1
- 235000020774 essential nutrients Nutrition 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 108091006047 fluorescent proteins Proteins 0.000 description 1
- 102000034287 fluorescent proteins Human genes 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000012215 gene cloning Methods 0.000 description 1
- 108010089804 glycyl-threonine Proteins 0.000 description 1
- 108010020688 glycylhistidine Proteins 0.000 description 1
- 108010050848 glycylleucine Proteins 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000005462 in vivo assay Methods 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- BPHPUYQFMNQIOC-NXRLNHOXSA-N isopropyl beta-D-thiogalactopyranoside Chemical compound CC(C)S[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O BPHPUYQFMNQIOC-NXRLNHOXSA-N 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 239000012160 loading buffer Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 210000000496 pancreas Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009465 prokaryotic expression Effects 0.000 description 1
- 230000006337 proteolytic cleavage Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 108091092562 ribozyme Proteins 0.000 description 1
- 229920002477 rna polymer Polymers 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 108010080629 tryptophan-leucine Proteins 0.000 description 1
- 239000011534 wash buffer Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/43504—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from invertebrates
- C07K14/43509—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from invertebrates from crustaceans
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K67/00—Rearing or breeding animals, not otherwise provided for; New or modified breeds of animals
- A01K67/033—Rearing or breeding invertebrates; New breeds of invertebrates
- A01K67/0333—Genetically modified invertebrates, e.g. transgenic, polyploid
- A01K67/0337—Genetically modified Arthropods
- A01K67/0338—Genetically modified Crustaceans
-
- 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
- C12N15/87—Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation
- C12N15/90—Stable introduction of foreign DNA into chromosome
- C12N15/902—Stable introduction of foreign DNA into chromosome using homologous recombination
-
- 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)
- C12N9/16—Hydrolases (3) acting on ester bonds (3.1)
- C12N9/22—Ribonucleases RNAses, DNAses
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2207/00—Modified animals
- A01K2207/10—Animals modified by protein administration, for non-therapeutic purpose
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2217/00—Genetically modified animals
- A01K2217/07—Animals genetically altered by homologous recombination
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2227/00—Animals characterised by species
- A01K2227/70—Invertebrates
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Biotechnology (AREA)
- Molecular Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Biomedical Technology (AREA)
- General Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Microbiology (AREA)
- Biophysics (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Mycology (AREA)
- Insects & Arthropods (AREA)
- Tropical Medicine & Parasitology (AREA)
- Toxicology (AREA)
- Gastroenterology & Hepatology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Animal Behavior & Ethology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Plant Pathology (AREA)
- Peptides Or Proteins (AREA)
Abstract
本发明公开了介导外源蛋白内吞的多肽和核酸及其应用和在异足新米虾中进行基因编辑的方法,本发明从异足新米虾(Neocaridina heteropoda)卵黄蛋白原中找到了一段长度仅为40aa的多肽,该多肽具有出乎意料的介导外源蛋白内吞的效果,从而易于表达、纯化、形成RNP复合物和被内吞,在异足新米虾的基因编辑中具有良好的应用前景。该技术的可被广泛应用于对胚胎显微注射技术尚不纯熟的非模式生物,对于Cas9介导的基因编辑具有重要意义。
Description
技术领域
本发明属于生物技术领域,具体来说涉及介导外源蛋白内吞的多肽和核酸及其应用和在异足新米虾中进行基因编辑的方法。
背景技术
CRISPR/Cas9(Clustered regulatory interspaced short palindromicrepeat/Cas9)系统是目前基因组编辑领域最受欢迎的方法。CRISPR是一个特殊的DNA重复序列家族,广泛分布于细菌和古细菌基因组中,CRISPR的酶切位点通常由高度保守的重复序列组成,其长度为21-48bp,重复序列之间被26-72bp间隔序列隔开,这些间隔序列是CRISPR与靶基因进行识别的标记。Cas9存在于CRISPR位点附近,是一种双链DNA核酸酶,能在sgRNA(small guide RNA)引导下对靶位点邻近的PAM(protospacer adjacent motif)序列进行识别并在其附近切割。
在使用CRISPR-Cas9系统进行位点特异性基因编辑以来,该技术已被用于各种物种。成功应用CRISPR-Cas9进行基因编辑依赖于胚胎显微注射。然而对于非专业实验室而言,它需要昂贵的设备和培训才能实施。同时,许多非模型生物对该技术尚不纯熟,而且它们的卵在注射过程容易受损,这些极大地限制了CRISPR-Cas9技术在甲壳动物中的应用。
大多数雌性卵生动物通过卵巢和卵子成熟的保守过程将蛋白质物质传递给它们正在发育的卵巢,称为卵黄发生。在无脊椎动物中,卵黄蛋白前体(YPPs)在脂肪体或肝胰腺中合成,分泌到血淋巴中,并通过受体介导的内吞作用(RME)摄取到卵巢中。在卵黄发生过程中,卵母细胞膜中的多种受体结合YPP配体,内化,积累在内体囊泡中,并分选成卵黄颗粒,用于发育胚胎的营养储存。
假设来自甲壳动物YPPs的配体可以与Cas9核糖核蛋白(RNP)复合物融合,并且将该融合蛋白注射到卵黄发生的雌性卵生动物血淋巴中,从而进入卵母细胞在胚胎中实现基因编辑。但是甲壳动物YPPs的分子量高达300kDa左右,将其整体作为YPP配体与Cas9融合后所形成的融合蛋白分子量过大,难于表达、纯化、形成RNP复合物和被内吞,因此不具有实际应用价值。
发明内容
本发明的目的在于克服现有技术的不足,提供一种能够高效介导外源蛋白内吞的多肽。
本发明的发明人在异足新米虾卵黄蛋白原的全长氨基酸序列中找到了一段长度仅为40aa的多肽,该多肽具有出乎意料的介导外源蛋白内吞的效果,从而易于表达、纯化、形成RNP复合物和被内吞,在异足新米虾的基因编辑中具有良好的应用前景,由此得到了本发明。
本发明提供了一种多肽,该多肽能够介导外源蛋白的内吞该多肽的氨基酸序列如SEQ ID NO.1所示。
可选地,所述外源蛋白为Cas9,所述内吞发生在异足新米虾卵母细胞中。
本发明还提供了一种核酸,该核酸编码如上所述的多肽。
可选地,该核酸的核苷酸序列如SEQ ID NO.2所示。
本发明还提供了一种如上所述的多肽或如上所述的核酸在介导外源蛋白内吞中的应用。
可选地,所述外源蛋白为Cas9,所述内吞发生在异足新米虾卵母细胞中。
可选地,该应用包括如下步骤:将融合核酸构建进表达质粒,并导入至工程菌,通过工程菌表达收集目标蛋白,将目标蛋白通过显微注射仪注射入卵黄发生前期的米虾心腔附近;所述融合核酸含有融合在同一核酸链中的编码Cas9蛋白的核酸和如上所述的核酸。
可选地,所述融合核酸的核苷酸序列如SEQ ID NO.3所示。
本发明还提供了一种在异足新米虾中进行基因编辑的方法,该方法包括:将sgRNA和融合蛋白混合以形成RNP复合物,并且将RNP复合物通过显微注射仪注射入卵黄发生前期的米虾心腔附近;所述融合蛋白含有融合在同一肽链中的Cas9多肽和如上所述的多肽。
可选地,该方法还包括:向卵黄发生前期的米虾中导入外源基因模版。
本发明从异足新米虾(Neocaridina heteropoda)卵黄蛋白原中找出一段可以介导外源蛋白Cas9内吞入卵母细胞的多肽,该多肽相对于其它多肽具有出乎意料的介导外源蛋白内吞的效果。该技术的可被广泛应用于对胚胎显微注射技术尚不纯熟的非模式生物,对于Cas9介导的基因编辑具有重要意义。
附图说明
图1为异足新米虾卵黄蛋白原结构域琼脂糖凝胶电泳结果图。
图2为异足新米虾VWD1/VWD2-EGFP融合蛋白表达纯化后SDS-PAGE凝胶电泳结果图。
图3为异足新米虾VWD1-EGFP融合蛋白-卵巢体外孵育实验Western Blot检测结果图(泳道1-3:VWD1-EGFP-卵巢孵育3h 5h 7h;泳道4.5:VWD2-EGFP-卵巢孵育3h 7h;泳道7:对照;泳道9:阳性对照P2C-EGFP蛋白)。
图4为注射VWD1-EGFP和VWD2-EGFP融合蛋白不同时间点米虾性腺荧光检测结果图。
图5为注射VWD1-EGFP融合蛋白米虾性腺Western Blot检测结果图(泳道1:Marker;泳道3:对照;泳道5:注射VWD1-EGFP蛋白3h;泳道7:VWD1-EGFP蛋白)。
图6为VWD1-cas9-GFP融合蛋白表达纯化后SDS-PAGE凝胶电泳结果图(M蛋白分子量标准泳道1.VWD2-cas-GFP蛋白;2:VWD1-cas-GFP蛋白)。
图7为注射VWD1-cas9-GFP和VWD2-cas9-GFP融合蛋白米虾性腺荧光检测图。
对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,可以根据以上附图获得其他的相关附图。
具体实施方式
为了使本技术领域的人员更好地理解本发明方案,下面结合具体实施例进一步说明本发明的技术方案。
下述实施例中的实验方法,如无特殊说明,均为常规方法。下述实施例中所用的试验材料,如无特殊说明,均为常规生化试剂商店购买得到。下述实施例中的%,如无特殊说明,均为质量百分含量。实施例中所使用的生物材料异足新米虾购买于浙江水产市场,体长约2cm,健康有活力。米虾购回后养在实验室中。淡水曝气,温度约26-28℃。每日投喂一次虾粮,每隔两周更换新鲜的曝气水。
步骤1.异足新米虾卵黄蛋白原结构域生物信息学分析
通过异足新米虾转录组数据,我们分析出异足新米虾卵黄蛋白原具有8607bp的全长序列,开放阅读框(ORF)为7674bp。
步骤2.Trizol法提取总RNA
(1)提前将研钵等器皿置于烘箱中180℃烘烤至少4h,以防RNA酶污染。烘烤好的研钵在室温冷却后倒入适量液氮降温,此时将冷冻的组织置于预冷好研钵中。用研磨棒快速将其研磨成粉末状;
(2)将研磨好的粉末转入到已加入1mL TRIzol的无酶EP管中。用振荡器充分混匀后,在室温静置10min,4℃,12000g,离心10min;
(3)离心后取上清到一个新的1.5mL无酶EP管中,室温静置5min后加入200μL氯仿,振荡器震荡15s,室温静置10min;
(4)4℃,12000g,离心15min后EP管中液体分为三层:上层无色含有RNA,中间层白色絮状含有DNA,下层粉红色含有蛋白质;
(5)吸取无色上层溶液于新的EP管中,吸取时要尽量小心以防吸到DNA,之后加入500μL异丙醇,用手上下颠倒混匀后,室温静置10min。若RNA含量较少,可以将其置于-20℃冰箱放置0.5h-1h;
(6)将含有RNA的EP管从冰箱中取出,4℃,12000g,离心10min,倒掉上清,残留液体用枪吸尽;
(7)加入配置好的75﹪乙醇1mL,用枪将RNA重悬,洗去杂质;
(8)4℃,7500g,离心5min,弃上清,用枪吸取管中的残留液体后置于滤纸上倒置空干,尽量使乙醇挥发完全。一般为5-10min,时间过长会导致RNA降解;
(9)根据提取到的RNA量的多少加入10-30μL的无酶水溶解RNA。若RNA没有完全溶解,可用55℃的水浴5min促进其溶解;
(10)用超微量分光光度计(Thermo Fisher Scientific)检测RNA的浓度。取1μLRNA用1%琼脂糖凝胶电泳检测RNA的提取质量。RNA冻存于-80℃冰箱中备用。
步骤3.合成cDNA第一条链
参考反转录试剂盒(PrimeScriptTMRT Master Mix)使用说明书,反转录获得cDNA第一条链:
按下列组份配制RT反应液(反应液配制在冰上进行)。
Component | Volume(μL) |
5×PrimeScript RT Master Mix(Perfect Real Time) | 2μl |
Total RNA | 500ng |
RNase Free dH2O | up to 10μl |
轻柔混匀后进行反转录反应,条件如下:
37℃ 15min(反转录反应)
85℃ 5s(反转录酶的失活反应)
4℃ ∞
步骤4.基因克隆
1.根据异足新米虾转录组提示利用软件Primer5.0设计卵黄蛋白原ORF区结构域的特异性引物。
表1本研究所用的引物序列
Tab.1 Primers used in the study
2.使用PCR技术对cDNA模板进行检测,反应体系如下:
PCR反应程序如下:
PCR产物用1%琼脂糖凝胶电泳检测。
3.连接:1%琼脂糖凝胶电泳对PCR产物进行检测后,参照琼脂糖凝胶DNA回收试剂盒使用说明书,将目的片段切胶回收纯化。用超微量分光光度计检测胶回收后的DNA浓度,将目的片段连接到pMDTM-18-T Vector上,16℃下过夜连接,连接体系如下:
4.转化:采用热激法将上述连接产物转入DH5α感受态中具体步骤为:
①将DH5α菌株接种与6ml的LB培养基中并与次日复摇至OD值为0.6,取1ml DH5α菌株于1.5ml的EP管中并加入100μl 0.1M的CaCl2进行处理,置于冰上3-5h后可用。
②将连接产物全部分别加入到DH5α感受态细胞中,轻轻吸打混匀后冰浴30min。
③将混合物在水浴锅中42℃热激90s后迅速转移到冰上2-3min。
④加LB液体培养基至1mL,37℃,150r/min培养45min-60min。
⑤3000rpm离心5min后,吸取900μl上清,剩下的菌液均匀后涂布于的LB固体培养基上(培养基加有氨苄青霉素),37℃条件下过夜培养。
5.挑单克隆:次日用灭过菌的枪头挑取多个单菌落于100μl有氨苄抗性的LB液体培养基中,菌体在37℃,220r/min条件下培养3h。以菌液为模板进行PCR检测,阳性克隆菌液送至金唯智生物科技有限公司完成测序。
步骤5.构建Neo-VWD1/VWD2-EGFP-Pet28a表达载体
(1)以提取的质粒pMDTM-18T-VWD1/VWD2为模板,用PCR扩增目的基因片段,反应体系如下:
PCR反应程序如下:
(2)参照质粒提取试剂盒说明书,提取pET-28a-EGFP质粒(质粒保存在DH5α菌中)。
(3)双酶切:PCR产物电泳检测后,扩大PCR体系,将目的片段切胶回收纯化并测定回收后的DNA浓度。用限制性内切酶BamH I和ASC I酶切目的基因片段以及pET-28a-EGFP质粒。
酶切体系如下:
酶切完成后,分别回收纯化目的片段以及载体的大片段。测其浓度后电泳检测目的基因和质粒片段的回收质量。
(4)连接:用T4DNA连接酶连接酶切好的目的片段及载体,反应条件为16℃。连接体系如下:
(5)转化:制备大肠杆菌DH5α感受态并转化。将含有转化产物的菌体涂布在含有卡那霉素的LB固体培养基上,37℃条件下过夜培养。
(6)挑单克隆:用枪头挑取单菌落,PCR检测后进行测序。
步骤6.蛋白表达
(1)制备BL21(DE3)感受态细胞,提取表达质粒pET-28a-VWD1/VWD2转入BL21(DE3)感受态细胞细胞中。将含有转化产物的菌体涂布在含有卡那霉素的LB固体培养基上,37℃条件下过夜培养。同样用PCR检测进行挑克隆检测。
(2)将检测正确的成功导入pET-28a-VWD1/VWD2质粒的BL21(DE3)表达菌分别接种于6ml的LB培养基中,并于次日复摇到600ml的LB培养基中大量培养,培养条件为培养条件为37℃,220rpm。测得OD值为0.6时,加入IPTG在37℃下进行诱导(终浓度为1mM),6h后4℃,10000rpm,离心10min,收集菌体。
(3)破碎菌体:每300ml离心得到的菌体加30ml破碎缓冲液BufferA。先加入15mLBufferA重悬菌体,之后再将BufferA补到30ml。每管破碎3次,每次破碎完之后要置于冰上降温。破碎完成后4℃,10000rpm,离心10min,上清倒入一个新的离心管中。
(4)洗涤杂蛋白:沉淀用15mL洗涤缓冲液BufferB重悬,之后再将BufferB补到30ml。双手剧烈震荡10-15min后4℃,10000rpm,离心10min,弃去清。
(5)溶解目的蛋白:向沉淀中加入15mL WashI重悬菌体,之后再将Wash I补到30ml。双手剧烈震荡20-25min后4℃,10000rpm,离心10min,目的蛋白溶解上清中。
(6)溶解在BufferA、BufferB和Wash I中的蛋白用还原性SDS-PAGE凝胶电泳进行检测。
步骤7.蛋白的纯化
(1)配制Wash Ⅰ、Wash Ⅱ、Elution、20%乙醇溶液。上述溶液、去离子水以及目的蛋白均用0.22μm的滤膜抽滤。
(2)目的蛋白上含有六个组氨酸而镍柱可以与其特异性的结合,所以选用Ni-NTA纯化目的蛋白。
具体操作步骤如下:
依次打开开电脑、纯化仪、软件Biotech。设计参数:流速1ml/min,进样Load状态,进样100%,压强0.45MPa
(3)目的蛋白纯化后进行还原性SDS-PAGE凝胶电泳检测。
步骤8.蛋白复性
先用尿素梯度透析复性纯化后的蛋白,在透析袋中装入10ml左右蛋白溶液置于的复性液中(已用0.22μm的滤膜抽滤)进行透析。复性液成分为:50mmol/L Tris-Cl,2mmol/L半胱氨酸,尿素浓度分别为8、6、4、3、2、1mol/L。每个浓度的尿素至少透析4h。最后将蛋白透析到1×PBS溶液中。重组蛋白复性完毕后进行还原性SDS-PAGE电泳检测。
步骤9.体外实验(目的蛋白和组织孵育实验-Western Blot检测)
1.解剖卵巢早期发育的米虾,取其卵巢组织置于等渗PBS中,用提前消毒、灭菌处理过的剪刀对卵巢组织进行修建,等渗PBS清洗三次;
2.将组织平均分到48孔板培养皿中,每孔的卵巢组织量约100mg(两只米虾卵巢重量);
3.实验分为:VWD1-EGFP实验组,VWD2-EGFPS实验组以及对照组,孵育时间分别是3h5h7h,每个实验组均设计三个平行实验组,培养条件为20℃;实验浓度:每孔终浓度300ng/ul。
4.对应时间取出来之后,等渗PBS冲洗3次,为下一步组织提取做好准备(组织蛋白提取)。(1)组织样品制备:取100-200mg组织加入500ul蛋白提取液(已加蛋白酶抑制剂),将组织样本充分匀浆,冰上静置30min(每10min振荡裂解);(2)上柱,10000×g4℃离心5min,收集上清,冻存-80℃;(3)蛋白的定量:使用BCA蛋白浓度测定试剂盒(康为世纪);
(4)取蛋白溶液中加入2×loading buffer,一般是按1:1,煮沸10min后室温冷却,冻存-20℃;
5.Western Blot
(1)SDS-聚丙烯酰胺凝胶电泳(SDS-PAGE)
(2)电转:1.剪PVDF膜和两张8层滤纸(注:PVDF膜略大于滤纸,PVDF膜可适当修剪以便分清正反面);2.PVDF膜在甲醇中浸泡20s,在SDW中浸泡2min,在转膜缓冲液中浸泡15min;3.8层滤纸在转膜缓冲液中泡15min,从胶板取下凝胶,去掉浓缩胶后,在转膜缓冲液中浸泡15min;4.用转膜缓冲液润湿机器底盘;5.按如下图方式组装好,12V恒压开始转膜,50-55min;6.封闭(block):转膜完成后,将PVDF膜泡入5%脱脂奶粉封闭(4℃过夜或室温1h);7.洗涤:取出PVDF膜,在T-TBS中洗三次,每次15min;8.孵育一抗:用1%封闭液(脱脂奶粉)稀释抗体,鼠源抗体(1:10000),兔源抗体(1:5000)。将PVDF膜装入塑料密封袋中,加入一抗,封口,摇床室温2h(注:要分别做好标记);9.洗涤:取出PVDF膜,在T-TBS中洗两次,每次10min,用2.5%封闭液,封闭40min;10.孵育二抗:将PVDF膜装入塑料密封袋中,根据一抗配制二抗1:5000稀释,封口,摇床室温2h;11.洗涤:取出PVDF膜,在T-TBS中洗两次,每次10min;
暗室显影(HRP酶)(1)先配置显影液和定影液。(可重复使用),准备红色的灯。(2)准备三个搪瓷盘,分别倒入显影液,水,定影液。(3)准备保鲜膜,剪适合大小,放在压片盒内,保证不能起皱。(4)用发光液处理PVDF膜,处理好的膜放入压片盒内的保鲜膜上,保鲜膜大小适当,然后把保鲜膜多余的部分盖在膜上,防止膜变干。(5)放入胶片,盖上压片盒,适当的时间后拿出胶片,一次放入显影液(看见条带后),水,定影液。(6)在定影液中泡至胶片变色。(7)结束后先收胶片,再开灯,回收显影液定影液。胶片放入水中清洗,使用晾衣夹夹住晾干,或者37度烤干,注意不要把胶片磨花。最后结果用扫描仪扫出来。挑选合适的显影图片保存,结束实验。
步骤10.体内实验(虾体内注射目的蛋白-荧光显微镜观察检测/Western Blot检测)
1.使用显微注射仪分别注射VWD1-EGFP蛋白、VWD2-EGFP蛋白及PBS于10只卵黄发生前期的米虾中(一只米虾血流量预计20ul),注射量及部位:心腔附近注射10ug(5ul),12h之后重复注射。
2.检测方法:(1)荧光显微镜观察:3h 5h 7h 12h后分别解剖3只米虾性腺进行观察。拍照记录。(2)Western Blot检测:3h 5h 7h 12h解剖的米虾性腺进行蛋白提取,酶标仪侧蛋白浓度,GFP抗体检测(实验组VWD1-EGFP蛋白注射3h空白对照阳性对照)。
步骤11,米虾VWD1卵黄蛋白-cas9-GFP及VWD2卵黄蛋白-cas9-EGFP载体构建(材料方法同步骤5参考无缝克隆说明书-北京全式金)
所述表达载体采用Cas9-GFP-1EA,目标序列位于该载体的HindIII和Bmt I两限制性内切酶位点之间。所述VWD1卵黄蛋白-cas9-GFP,如SEQ ID NO.3所示,所述VWD2卵黄蛋白-cas9-EGFP,如SEQ ID NO.6所示。
步骤12米虾VWD1卵黄蛋白-cas9-GFP及VWD2卵黄蛋白-cas9-EGFP表达纯化(材料方法同步骤7)
步骤13体内实验(材料方法同步骤10)
向虾体内注射VWD1卵黄蛋白-cas9-GFP及VWD2卵黄蛋白-cas9-EGFP,与对照组(注射PBS)进行荧光显微镜下的观察比较。
实验结果
1.异足新米虾卵黄蛋白原结构域基因克隆结果
将溶解在无酶水中的DNA进行琼脂糖凝胶电泳检测。结果发现与预期大小一致的目的条带(图1)。图1中,1为标准DNA Marker,从上至下大小依次为2000bp、1000bp、750bp、500bp、250bp和100bp。克隆出来的目的基因分别是LPD_N结构域、DUF1943结构域和VWD结构域,VWD1,VWD2。
所述VWD1蛋白氨基酸序列如SEQ ID NO.1所示;
所述VWD1基因核苷酸序列如SEQ ID NO.2所示;
所述VWD1卵黄蛋白-cas9-GFP核苷酸序列如SEQ ID NO.3所示;
所述VWD2蛋白氨基酸序列如SEQ ID NO.4所示;
所述VWD2基因核苷酸序列如SEQ ID NO.5所示;
所述VWD2卵黄蛋白-cas9-GFP核苷酸序列如SEQ ID NO.6所示。
2.异足新米虾卵黄蛋白原-EGFP融合蛋白表达及纯化结果
重组蛋白的相对分子量大小约36kD。同时进行还原性SDS-PAGE凝胶电泳发现目的条带VWD1-EGFP(图2A)和VWD2-EGFP(图2B)。
3.异足新米虾卵黄蛋白原内吞入卵母细胞体外实验(目的蛋白和组织孵育实验-WesternBlot检测)
根据Western Blot检测,图3中与对照组相比,在排除蛋白与性腺物理吸附的条件下,实验组在与VWD1-EGFP蛋白孵育3h,7h的米虾性腺总蛋白中检测出了与阳性对照(VWD1-EGFP1蛋白)大小相似的蛋白,而与VWD2蛋白孵育3h,7h的米虾性腺总蛋白中并未检出与阳性对照(VWD2-EGFP蛋白)大小相似的蛋白。
4.异足新米虾卵黄蛋白原内吞入卵母细胞体内实验(虾体内注射目的蛋白-荧光显微镜观察检测/Western Blot检测)
通过荧光显微镜观察,在图4中,可以观察到与未经蛋白注射过的米虾性腺相比,实验组在VWD1-EGFP蛋白注射3h,12h后能在米虾性腺中观察到有荧光集聚的现象出现,而在进行VWD2-EGFP蛋白注射后3h,12h后未能在米虾性腺中观察到有荧光集聚的现象,说明VWD1能够携带EGFP被卵细胞内吞。
通过Western Blot检测验证,根据图五,进一步得出结论:该蛋白能被米虾性腺卵母细胞表面所内吞。
5.异足新米虾卵黄蛋白原-EGFP-cas9融合蛋白表达及纯化结果
如图6所示,重组蛋白的相对分子量大小约196kD。同时进行还原性SDS-PAGE凝胶电泳发现目的条带。
6.异足新米虾卵黄蛋白原携带cas9蛋白内吞入卵母细胞体内实验(虾体内注射目的蛋白-荧光显微镜观察检测/Western Blot检测)
如图7所示,通过荧光显微镜观察,可以观察到与未经蛋白注射过的米虾性腺相比,实验组在VWD1-cas9-EGFP蛋白注射12h后能在米虾性腺中观察到有荧光集聚的现象出现,而VWD2-cas9-EGFP蛋白注射后12h未能观察到米虾性腺中荧光聚集。证实VWD1-cas9-EGFP融合蛋白被卵母细胞表面内吞。
讨论
通过荧光显微镜观察,可以观察到与未经蛋白注射过的米虾性腺相比,注射卵黄蛋白原-EGFP融合蛋白的实验组能在米虾性腺中观察到有荧光集聚的现象出现,而且通过Western Blot再次验证VWD1-EGFP融合蛋白能被卵母细胞表面内吞。卵黄蛋白原(Vitellogenin,Vg)是卵黄蛋白的前体,为卵生动物胚胎发育提供必需的营养物质。在卵黄发育期,在激素的诱导下,Vg经过修饰及蛋白酶剪切后,形成Vg聚合体,分泌到血淋巴中并运输至卵巢,由卵巢上的Vg受体识别,通过内吞作用入卵,并在卵内进一步加工成为成熟的卵黄蛋白。VG有营养运输功能,同时能携带部分外源物质一同被摄入卵母细胞中。本发明构建了卵黄蛋白-cas9-GFP载体体系,使用原核表达的方式将蛋白表达并进行了荧光蛋白注射和荧光检测,在蛋白注射12h后能在米虾性腺中观察到有荧光集聚的现象出现,实验证实VWD1-cas9融合蛋白被卵母细胞表面内吞。
以上对本发明做了示例性的描述,应该说明的是,在不脱离本发明的核心的情况下,任何简单的变形、修改或者其他本领域技术人员能够不花费创造性劳动的等同替换均落入本发明的保护。
SEQUENCE LISTING
<110> 天津师范大学
<120> 介导外源蛋白内吞的多肽和核酸及其应用和在异足新米虾中进行基因编辑的
方法
<130> 1
<160> 6
<170> PatentIn version 3.5
<210> 1
<211> 40
<212> PRT
<213> Neocaridina heteropoda
<400> 1
Val Asp Val Thr Gly Trp Thr Phe Gly His Thr Val Gly Leu Leu Gly
1 5 10 15
Thr Tyr Asp Asn Glu Ile Ala Asn Asp Trp Leu Thr Leu Arg Gly Thr
20 25 30
Arg Ala Asn Thr Leu Gln Glu Leu
35 40
<210> 2
<211> 120
<212> DNA
<213> Neocaridina heteropoda
<400> 2
gtggatgtca caggatggac ctttgggcac actgtcggac tccttggtac ttatgataat 60
gaaattgcaa acgactggtt gacactgaga gggaccaggg ctaataccct tcaggaattg 120
<210> 3
<211> 5067
<212> DNA
<213> Neocaridina heteropoda
<400> 3
aagcttgtgg atgtcacagg atggaccttt gggcacactg tcggactcct tggtacttat 60
gataatgaaa ttgcaaacga ctggttgaca ctgagaggga ccagggctaa tacccttcag 120
gaattgaggc gcgccaagct agccgccacc atggacaaga agtacagcat cggcctggac 180
atcggcacca actctgtggg ctgggccgtg atcaccgacg agtacaaggt gcccagcaag 240
aaattcaagg tgctgggcaa caccgaccgg cacagcatca agaagaacct gatcggcgcc 300
ctgctgttcg acagcggaga aacagccgag gccacccggc tgaagagaac cgccagaaga 360
agatacacca gacggaagaa ccggatctgc tatctgcaag agattttcag caacgagatg 420
gccaaggtgg acgacagctt cttccacaga ctggaagagt ccttcctggt ggaagaggat 480
aagaagcacg agcggcaccc catcttcggc aacatcgtgg acgaggtggc ctaccacgag 540
aagtacccca ccatctacca cctgagaaag aaactggtgg acagcaccga caaggccgac 600
ctgcggctga tctatctggc cctggcccac atgatcaagt tccggggcca cttcctgatc 660
gagggcgacc tgaaccccga caacagcgac gtggacaagc tgttcatcca gctggtgcag 720
acctacaacc agctgttcga ggaaaacccc atcaacgcca gcggcgtgga cgccaaggcc 780
atcctgtctg ccagactgag caagagcaga cggctggaaa atctgatcgc ccagctgccc 840
ggcgagaaga agaatggcct gttcggcaac ctgattgccc tgagcctggg cctgaccccc 900
aacttcaaga gcaacttcga cctggccgag gatgccaaac tgcagctgag caaggacacc 960
tacgacgacg acctggacaa cctgctggcc cagatcggcg accagtacgc cgacctgttt 1020
ctggccgcca agaacctgtc cgacgccatc ctgctgagcg acatcctgag agtgaacacc 1080
gagatcacca aggcccccct gagcgcctct atgatcaaga gatacgacga gcaccaccag 1140
gacctgaccc tgctgaaagc tctcgtgcgg cagcagctgc ctgagaagta caaagaaatc 1200
ttcttcgacc agagcaagaa cggctacgcc ggctacatcg atggcggagc cagccaggaa 1260
gagttctaca agttcatcaa gcccatcctg gaaaagatgg acggcaccga ggaactgctc 1320
gtgaagctga acagagagga cctgctgcgg aagcagcgga ccttcgacaa cggcagcatc 1380
ccccaccaga tccacctggg agagctgcac gccattctgc ggcggcagga agatttttac 1440
ccattcctga aggacaaccg ggaaaagatc gagaagatcc tgaccttccg catcccctac 1500
tacgtgggcc ctctggccag gggaaacagc agattcgcct ggatgaccag aaagagcgag 1560
gaaaccatca ccccctggaa cttcgaggaa gtggtggaca agggcgccag cgcccagagc 1620
ttcatcgagc ggatgaccaa cttcgataag aacctgccca acgagaaggt gctgcccaag 1680
cacagcctgc tgtacgagta cttcaccgtg tacaacgagc tgaccaaagt gaaatacgtg 1740
accgagggaa tgagaaagcc cgccttcctg agcggcgagc agaaaaaggc catcgtggac 1800
ctgctgttca agaccaaccg gaaagtgacc gtgaagcagc tgaaagagga ctacttcaag 1860
aaaatcgagt gcttcgactc cgtggaaatc tccggcgtgg aagatcggtt caacgcctcc 1920
ctgggcacat accacgacct gctgaagatt atcaaggaca aggacttcct ggacaatgag 1980
gaaaacgagg acattctgga agatatcgtg ctgaccctga cactgtttga ggacagagag 2040
atgatcgagg aacggctgaa aacctatgcc cacctgttcg acgacaaagt gatgaagcag 2100
ctgaagcggc ggagatacac cggctggggc aggctgagcc ggaagctgat caacggcatc 2160
cgggacaagc agtccggcaa gacaatcctg gatttcctga agtccgacgg cttcgccaac 2220
agaaacttca tgcagctgat ccacgacgac agcctgacct ttaaagagga catccagaaa 2280
gcccaggtgt ccggccaggg cgatagcctg cacgagcaca ttgccaatct ggccggatcc 2340
cccgccatta agaagggcat cctgcagaca gtgaagattg tggacgagct cgtgaaagtg 2400
atgggccaca agcccgagaa catcgtgatc gaaatggcca gagagaacca gaccacccag 2460
aagggacaga agaacagccg cgagagaatg aagcggatcg aagagggcat caaagagctg 2520
ggcagccaga tcctgaaaga acaccccgtg gaaaacaccc agctgcagaa cgagaagctg 2580
tacctgtact acctgcagaa tgggcgggat atgtacgtgg accaggaact ggacatcaac 2640
cggctgtccg actacgatgt ggaccacatt gtgccccagt ccttcatcaa ggacgactcc 2700
atcgataaca aagtgctgac tcggagcgac aagaaccggg gcaagagcga caacgtgccc 2760
tccgaagagg tcgtgaagaa gatgaagaac tactggcgcc agctgctgaa tgccaagctg 2820
attacccaga ggaagttcga caatctgacc aaggccgaga gaggcggcct gagcgaactg 2880
gataaggccg gcttcattaa gcggcagctg gtggaaaccc ggcagatcac aaagcacgtg 2940
gcacagatcc tggactcccg gatgaacact aagtacgacg agaacgacaa actgatccgg 3000
gaagtgaaag tgatcaccct gaagtccaag ctggtgtccg acttcagaaa ggatttccag 3060
ttttacaaag tgcgcgagat caacaactac caccacgccc acgacgccta cctgaacgcc 3120
gtcgtgggaa ccgccctgat caaaaagtac cctaagctgg aaagcgagtt cgtgtacggc 3180
gattacaagg tgtacgacgt gcggaagatg atcgccaaga gcgagcagga aatcggcaag 3240
gctaccgcca agtacttctt ctacagcaac atcatgaact ttttcaagac cgagatcaca 3300
ctggccaacg gcgagatcag aaagcggcct ctgatcgaga caaacggcga aaccggggag 3360
atcgtgtggg ataagggccg ggattttgcc acagtgcgga aagtgctgtc catgccccaa 3420
gtgaatatcg tgaaaaagac cgaggtgcag accggcggct tcagcaaaga gtctatcctg 3480
cccaagagga actccgacaa gctgatcgcc agaaagaagg attgggaccc taagaagtac 3540
ggcggctttg acagccccac cgtggcctac tctgtgctgg tggtggccaa agtggaaaag 3600
ggcaagtcca agaaactgaa gagtgtgaaa gagctgctgg ggatcaccat catggaaaga 3660
agcagcttcg agaagaatcc catcgacttt ctggaagcca agggctacaa agaagtgaaa 3720
aaggacctga tcatcaagct gcctaagtac tccctgttcg agctggaaaa cggccggaag 3780
cggatgctgg cttctgccgg cgaactgcag aagggaaacg agctggccct gccctccaaa 3840
tatgtgaact tcctgtacct ggccagccac tatgagaagc tgaagggctc ccccgaggat 3900
aatgagcaga aacagctgtt tgtggaacag cacaagcact acctggacga gatcatcgag 3960
cagattagcg agttctccaa gcgcgtgatc ctggccgatg ccaacctgga caaggtgctg 4020
agcgcctaca acaagcaccg ggataagccc atcagagagc aggccgagaa tatcatccac 4080
ctgtttaccc tgaccaacct gggagcccct gccgccttca agtactttga caccaccatc 4140
gaccggaaga ggtacaccag caccaaagag gtgctggacg ccaccctgat ccaccagagc 4200
atcaccggcc tgtacgagac acggatcgac ctgtctcagc tgggaggcga ccccaagaaa 4260
aagcgcaaag tgctcgagag aagcggcagc ggagagggca gaggaagtct tctaacatgc 4320
ggtgacgtgg aggagaatcc cggccctagg atgagcgggg gcgaggagct gttcgccggc 4380
atcgtgcccg tgctgatcga gctggacggc gacgtgcacg gccacaagtt cagcgtgcgc 4440
ggcgagggcg agggcgacgc cgactacggc aagctggaga tcaagttcat ctgcaccacc 4500
ggcaagctgc ccgtgccctg gcccaccctg gtgaccaccc tctgctacgg catccagtgc 4560
ttcgcccgct accccgagca catgaagatg aacgacttct tcaagagcgc catgcccgag 4620
ggctacatcc aggagcgcac catccagttc caggacgacg gcaagtacaa gacccgcggc 4680
gaggtgaagt tcgagggcga caccctggtg aaccgcatcg agctgaaggg caaggacttc 4740
aaggaggacg gcaacatcct gggccacaag ctggagtaca gcttcaacag ccacaacgtg 4800
tacatccgcc ccgacaaggc caacaacggc ctggaggcta acttcaagac ccgccacaac 4860
atcgagggcg gcggcgtgca gctggccgac cactaccaga ccaacgtgcc cctgggcgac 4920
ggccccgtgc tgatccccat caaccactac ctgagcactc agaccaagat cagcaaggac 4980
cgcaacgagg cccgcgacca catggtgctc ctggagtcct tcagcgcctg ctgccacacc 5040
cacggcatgg acgagctgta caggtga 5067
<210> 4
<211> 40
<212> PRT
<213> Neocaridina heteropoda
<400> 4
Val Gly Leu Leu Gly Thr Tyr Asp Asn Glu Ile Ala Asn Asp Trp Leu
1 5 10 15
Thr Leu Arg Gly Thr Arg Ala Asn Thr Leu Gln Glu Leu Val Arg Ser
20 25 30
Trp Gln Glu Asn Gln Gln Cys Glu
35 40
<210> 5
<211> 120
<212> DNA
<213> Neocaridina heteropoda
<400> 5
gtcggactcc ttggtactta tgataatgaa attgcaaacg actggttgac actgagaggg 60
accagggcta atacccttca ggaattggtg agatcatggc aggaaaatca gcaatgtgaa 120
<210> 6
<211> 5067
<212> DNA
<213> Neocaridina heteropoda
<400> 6
aagcttgtcg gactccttgg tacttatgat aatgaaattg caaacgactg gttgacactg 60
agagggacca gggctaatac ccttcaggaa ttggtgagat catggcagga aaatcagcaa 120
tgtgaaaggc gcgccaagct agccgccacc atggacaaga agtacagcat cggcctggac 180
atcggcacca actctgtggg ctgggccgtg atcaccgacg agtacaaggt gcccagcaag 240
aaattcaagg tgctgggcaa caccgaccgg cacagcatca agaagaacct gatcggcgcc 300
ctgctgttcg acagcggaga aacagccgag gccacccggc tgaagagaac cgccagaaga 360
agatacacca gacggaagaa ccggatctgc tatctgcaag agattttcag caacgagatg 420
gccaaggtgg acgacagctt cttccacaga ctggaagagt ccttcctggt ggaagaggat 480
aagaagcacg agcggcaccc catcttcggc aacatcgtgg acgaggtggc ctaccacgag 540
aagtacccca ccatctacca cctgagaaag aaactggtgg acagcaccga caaggccgac 600
ctgcggctga tctatctggc cctggcccac atgatcaagt tccggggcca cttcctgatc 660
gagggcgacc tgaaccccga caacagcgac gtggacaagc tgttcatcca gctggtgcag 720
acctacaacc agctgttcga ggaaaacccc atcaacgcca gcggcgtgga cgccaaggcc 780
atcctgtctg ccagactgag caagagcaga cggctggaaa atctgatcgc ccagctgccc 840
ggcgagaaga agaatggcct gttcggcaac ctgattgccc tgagcctggg cctgaccccc 900
aacttcaaga gcaacttcga cctggccgag gatgccaaac tgcagctgag caaggacacc 960
tacgacgacg acctggacaa cctgctggcc cagatcggcg accagtacgc cgacctgttt 1020
ctggccgcca agaacctgtc cgacgccatc ctgctgagcg acatcctgag agtgaacacc 1080
gagatcacca aggcccccct gagcgcctct atgatcaaga gatacgacga gcaccaccag 1140
gacctgaccc tgctgaaagc tctcgtgcgg cagcagctgc ctgagaagta caaagaaatc 1200
ttcttcgacc agagcaagaa cggctacgcc ggctacatcg atggcggagc cagccaggaa 1260
gagttctaca agttcatcaa gcccatcctg gaaaagatgg acggcaccga ggaactgctc 1320
gtgaagctga acagagagga cctgctgcgg aagcagcgga ccttcgacaa cggcagcatc 1380
ccccaccaga tccacctggg agagctgcac gccattctgc ggcggcagga agatttttac 1440
ccattcctga aggacaaccg ggaaaagatc gagaagatcc tgaccttccg catcccctac 1500
tacgtgggcc ctctggccag gggaaacagc agattcgcct ggatgaccag aaagagcgag 1560
gaaaccatca ccccctggaa cttcgaggaa gtggtggaca agggcgccag cgcccagagc 1620
ttcatcgagc ggatgaccaa cttcgataag aacctgccca acgagaaggt gctgcccaag 1680
cacagcctgc tgtacgagta cttcaccgtg tacaacgagc tgaccaaagt gaaatacgtg 1740
accgagggaa tgagaaagcc cgccttcctg agcggcgagc agaaaaaggc catcgtggac 1800
ctgctgttca agaccaaccg gaaagtgacc gtgaagcagc tgaaagagga ctacttcaag 1860
aaaatcgagt gcttcgactc cgtggaaatc tccggcgtgg aagatcggtt caacgcctcc 1920
ctgggcacat accacgacct gctgaagatt atcaaggaca aggacttcct ggacaatgag 1980
gaaaacgagg acattctgga agatatcgtg ctgaccctga cactgtttga ggacagagag 2040
atgatcgagg aacggctgaa aacctatgcc cacctgttcg acgacaaagt gatgaagcag 2100
ctgaagcggc ggagatacac cggctggggc aggctgagcc ggaagctgat caacggcatc 2160
cgggacaagc agtccggcaa gacaatcctg gatttcctga agtccgacgg cttcgccaac 2220
agaaacttca tgcagctgat ccacgacgac agcctgacct ttaaagagga catccagaaa 2280
gcccaggtgt ccggccaggg cgatagcctg cacgagcaca ttgccaatct ggccggatcc 2340
cccgccatta agaagggcat cctgcagaca gtgaagattg tggacgagct cgtgaaagtg 2400
atgggccaca agcccgagaa catcgtgatc gaaatggcca gagagaacca gaccacccag 2460
aagggacaga agaacagccg cgagagaatg aagcggatcg aagagggcat caaagagctg 2520
ggcagccaga tcctgaaaga acaccccgtg gaaaacaccc agctgcagaa cgagaagctg 2580
tacctgtact acctgcagaa tgggcgggat atgtacgtgg accaggaact ggacatcaac 2640
cggctgtccg actacgatgt ggaccacatt gtgccccagt ccttcatcaa ggacgactcc 2700
atcgataaca aagtgctgac tcggagcgac aagaaccggg gcaagagcga caacgtgccc 2760
tccgaagagg tcgtgaagaa gatgaagaac tactggcgcc agctgctgaa tgccaagctg 2820
attacccaga ggaagttcga caatctgacc aaggccgaga gaggcggcct gagcgaactg 2880
gataaggccg gcttcattaa gcggcagctg gtggaaaccc ggcagatcac aaagcacgtg 2940
gcacagatcc tggactcccg gatgaacact aagtacgacg agaacgacaa actgatccgg 3000
gaagtgaaag tgatcaccct gaagtccaag ctggtgtccg acttcagaaa ggatttccag 3060
ttttacaaag tgcgcgagat caacaactac caccacgccc acgacgccta cctgaacgcc 3120
gtcgtgggaa ccgccctgat caaaaagtac cctaagctgg aaagcgagtt cgtgtacggc 3180
gattacaagg tgtacgacgt gcggaagatg atcgccaaga gcgagcagga aatcggcaag 3240
gctaccgcca agtacttctt ctacagcaac atcatgaact ttttcaagac cgagatcaca 3300
ctggccaacg gcgagatcag aaagcggcct ctgatcgaga caaacggcga aaccggggag 3360
atcgtgtggg ataagggccg ggattttgcc acagtgcgga aagtgctgtc catgccccaa 3420
gtgaatatcg tgaaaaagac cgaggtgcag accggcggct tcagcaaaga gtctatcctg 3480
cccaagagga actccgacaa gctgatcgcc agaaagaagg attgggaccc taagaagtac 3540
ggcggctttg acagccccac cgtggcctac tctgtgctgg tggtggccaa agtggaaaag 3600
ggcaagtcca agaaactgaa gagtgtgaaa gagctgctgg ggatcaccat catggaaaga 3660
agcagcttcg agaagaatcc catcgacttt ctggaagcca agggctacaa agaagtgaaa 3720
aaggacctga tcatcaagct gcctaagtac tccctgttcg agctggaaaa cggccggaag 3780
cggatgctgg cttctgccgg cgaactgcag aagggaaacg agctggccct gccctccaaa 3840
tatgtgaact tcctgtacct ggccagccac tatgagaagc tgaagggctc ccccgaggat 3900
aatgagcaga aacagctgtt tgtggaacag cacaagcact acctggacga gatcatcgag 3960
cagattagcg agttctccaa gcgcgtgatc ctggccgatg ccaacctgga caaggtgctg 4020
agcgcctaca acaagcaccg ggataagccc atcagagagc aggccgagaa tatcatccac 4080
ctgtttaccc tgaccaacct gggagcccct gccgccttca agtactttga caccaccatc 4140
gaccggaaga ggtacaccag caccaaagag gtgctggacg ccaccctgat ccaccagagc 4200
atcaccggcc tgtacgagac acggatcgac ctgtctcagc tgggaggcga ccccaagaaa 4260
aagcgcaaag tgctcgagag aagcggcagc ggagagggca gaggaagtct tctaacatgc 4320
ggtgacgtgg aggagaatcc cggccctagg atgagcgggg gcgaggagct gttcgccggc 4380
atcgtgcccg tgctgatcga gctggacggc gacgtgcacg gccacaagtt cagcgtgcgc 4440
ggcgagggcg agggcgacgc cgactacggc aagctggaga tcaagttcat ctgcaccacc 4500
ggcaagctgc ccgtgccctg gcccaccctg gtgaccaccc tctgctacgg catccagtgc 4560
ttcgcccgct accccgagca catgaagatg aacgacttct tcaagagcgc catgcccgag 4620
ggctacatcc aggagcgcac catccagttc caggacgacg gcaagtacaa gacccgcggc 4680
gaggtgaagt tcgagggcga caccctggtg aaccgcatcg agctgaaggg caaggacttc 4740
aaggaggacg gcaacatcct gggccacaag ctggagtaca gcttcaacag ccacaacgtg 4800
tacatccgcc ccgacaaggc caacaacggc ctggaggcta acttcaagac ccgccacaac 4860
atcgagggcg gcggcgtgca gctggccgac cactaccaga ccaacgtgcc cctgggcgac 4920
ggccccgtgc tgatccccat caaccactac ctgagcactc agaccaagat cagcaaggac 4980
cgcaacgagg cccgcgacca catggtgctc ctggagtcct tcagcgcctg ctgccacacc 5040
cacggcatgg acgagctgta caggtga 5067
Claims (8)
1.一种多肽,该多肽能够介导外源蛋白的内吞,其特征在于:该多肽的氨基酸序列如SEQ ID NO.1所示。
2.一种核酸,其特征在于:该核酸编码权利要求1所述的多肽。
3.如权利要求2所述的核酸,其特征在于:该核酸的核苷酸序列如SEQ ID NO.2所示。
4.一种如权利要求1所述的多肽或权利要求2或3所述的核酸在介导外源蛋白内吞中的应用,其特征在于:所述外源蛋白为Cas9,所述内吞发生在异足新米虾卵母细胞中。
5.如权利要求4所述的应用,其特征在于,包括如下步骤:将融合核酸构建进表达质粒,并导入至工程菌,通过工程菌表达收集目标蛋白,将目标蛋白通过显微注射仪注射入卵黄发生前期的米虾心腔附近;所述融合核酸含有融合在同一核酸链中的编码Cas9蛋白的核酸和权利要求2或3所述的核酸。
6.如权利要求5所述的应用,其特征在于:所述融合核酸的核苷酸序列如SEQ ID NO.3所示。
7.一种在异足新米虾中进行基因编辑的方法,其特征在于,该方法包括:将sgRNA和融合蛋白混合以形成RNP复合物,并且将RNP复合物通过显微注射仪注射入卵黄发生前期的米虾心腔附近;所述融合蛋白含有融合在同一肽链中的Cas9多肽和权利要求1所述的多肽。
8.根据权利要求7所述的方法,其特征在于,该方法还包括:向卵黄发生前期的米虾中导入外源基因模版。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911283525.XA CN112979778B (zh) | 2019-12-13 | 2019-12-13 | 介导外源蛋白内吞的多肽和核酸及其应用和在异足新米虾中进行基因编辑的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911283525.XA CN112979778B (zh) | 2019-12-13 | 2019-12-13 | 介导外源蛋白内吞的多肽和核酸及其应用和在异足新米虾中进行基因编辑的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN112979778A CN112979778A (zh) | 2021-06-18 |
CN112979778B true CN112979778B (zh) | 2022-04-22 |
Family
ID=76341729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201911283525.XA Active CN112979778B (zh) | 2019-12-13 | 2019-12-13 | 介导外源蛋白内吞的多肽和核酸及其应用和在异足新米虾中进行基因编辑的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112979778B (zh) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104193814A (zh) * | 2014-09-09 | 2014-12-10 | 中国水产科学研究院淡水渔业研究中心 | 青虾卵黄蛋白原Vg基因、编码蛋白及应用 |
CN108048468A (zh) * | 2017-12-27 | 2018-05-18 | 中国水产科学研究院淡水渔业研究中心 | 青虾视蛋白基因及其编码的蛋白和应用 |
CN109400690A (zh) * | 2018-10-30 | 2019-03-01 | 天津师范大学 | 促进米虾抗菌肽增多的重组bursicon蛋白及其应用 |
-
2019
- 2019-12-13 CN CN201911283525.XA patent/CN112979778B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104193814A (zh) * | 2014-09-09 | 2014-12-10 | 中国水产科学研究院淡水渔业研究中心 | 青虾卵黄蛋白原Vg基因、编码蛋白及应用 |
CN108048468A (zh) * | 2017-12-27 | 2018-05-18 | 中国水产科学研究院淡水渔业研究中心 | 青虾视蛋白基因及其编码的蛋白和应用 |
CN109400690A (zh) * | 2018-10-30 | 2019-03-01 | 天津师范大学 | 促进米虾抗菌肽增多的重组bursicon蛋白及其应用 |
Also Published As
Publication number | Publication date |
---|---|
CN112979778A (zh) | 2021-06-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3250968B2 (ja) | オリゴペプチド反復単位を有する大ポリペプチド | |
JPH09509313A (ja) | 医薬品等級プラスミドdnaの製造方法 | |
CN111607613A (zh) | 一种表达细胞免疫疫苗mRNA的质粒载体及其构建方法和应用 | |
CN111647089A (zh) | 一种重组类人弹性蛋白及其组合物 | |
US11325953B2 (en) | Protein of ‘dangshan suli’ having function of promoting growth of pollen tube, encoding gene PBRTTS1 and use thereof | |
CN111171131A (zh) | 具有卵巢靶向功能的褐飞虱卵黄原蛋白n端肽段及其用途 | |
CN112979778B (zh) | 介导外源蛋白内吞的多肽和核酸及其应用和在异足新米虾中进行基因编辑的方法 | |
CN107058363B (zh) | 基于淀粉样蛋白实现小分子肽类高效分泌表达的方法及其应用 | |
CN108841793B (zh) | 抗鸭Mx-A单克隆抗体及其在检测鸭Mx蛋白的应用 | |
CN114276417B (zh) | 一种在植物正常生理条件下鉴定全基因组dna鸟嘌呤四联体位点的方法 | |
CN105861530B (zh) | 承载GAD65 p271-284肽段的I-Ag7果蝇细胞高表达基因序列和构建的Tetramer | |
CN108486115B (zh) | 一种用于淡水螯虾细胞外源基因表达的转染方法及其应用 | |
CN114107176A (zh) | 一种稳定表达非洲猪瘟CD2v蛋白的CHO细胞系及其构建方法和应用 | |
CN114106196A (zh) | 抗体-转座酶融合蛋白及其制备方法和应用 | |
CN109777807B (zh) | 一种在线粒体中定位表达外源蛋白的方法 | |
CN110257409B (zh) | 一种红螯螯虾孵化酶基因及其应用 | |
Lee et al. | A novel technique for the effective production of short peptide analogs from concatameric short peptide multimers | |
CN110590909A (zh) | 一种穿透肽及其在敲除金黄色葡萄球菌黏附因子中的应用 | |
CN111575315A (zh) | 一种兔病毒性出血症病毒ⅱ型vlp疫苗 | |
CN107400719B (zh) | 一组柞蚕微孢子虫检测引物及其应用 | |
CN111850022A (zh) | 一种快速添加或替换目的基因的蛋白标签的方法 | |
CN111607612A (zh) | 一种表达体液免疫疫苗mRNA的质粒载体及其构建方法和应用 | |
CN113789341B (zh) | BmSPI38的同型串联多聚体及其构建方法和应用 | |
CN112391367A (zh) | 一种可用于人原代细胞基因编辑的Cas9蛋白的制备方法 | |
CN113788898B (zh) | BmSPI39的同型串联多聚体及其构建方法和应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |