CN101671669A - Hepatocellular carcinoma targeting gene expression element AE and applications thereof - Google Patents
Hepatocellular carcinoma targeting gene expression element AE and applications thereof Download PDFInfo
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Abstract
The invention provides a hepatocellular carcinoma targeting gene expression element AE and applications thereof, and the gene expression element AE has a nucleotide sequence indicated in SEQ ID No.1.After the expression element AE is guided into Alpha-fetoprotein positive tumor cells, the artificial microRNA aiming at eukaryotic initiation factor 4E can be expressed in the cell and the expressionof the eukaryotic initiation factor 4E in the cell can be effectively inhibited, the formation of the integrated translation initiation complex in the cell is further affected; and the synthesis of the protein is blocked finally, the growth and multiplication of the AFP positive hepatoma cell are specially inhibited and the expression element AE can be applied to the preparation of the targetinggene curing medicine of AFP positive liver cancer.
Description
Technical field
The invention belongs to biotechnology, relate to gene expression regulation, specifically, relate to a specific specificity at design, the preparation of the targeted gene expression element AE of alph-fetoprotein positive liver cancer and can suppress the expression of eukaryotic cell translation initiation factor 4E in the liver cancer cell after specifically expressing, its transcription product are processed in the liver cancer cell of alph-fetoprotein positive effectively in cell, protein synthesis new in the cell can't be carried out because of complete eukaryotic cell translation initiation complex lacks, thereby reach the effect that suppresses liver cancer cell growth and propagation.The present invention can be used for preparing target therapy of tumor medicine.
Background technology
Malignant tumour is human at present mainly one of " killer ", and along with the change of people life style and environment, its sickness rate is in rising trend in recent years, has become first cause of death in many cities, is at the second place in the rural area.Liver cancer is one of modal very harmful malignant tumour in China, compares with other common cancers such as lung cancer, gastroenteric tumor, breast cancers, and the curative effect and the prognosis of usual manners such as present operation and chemotherapy are all undesirable.
The biotherapy that is called as the oncotherapy new model is just demonstrating more and more good prospects for application at present.In various tumor biotherapy means, gene therapy is a main direction all the time, China development first formally enters the genomic medicine of clinical use, promptly is its representative at adenovirus injection liquid " Gendicine " the cancer suppressor gene p53 that undergos mutation in many tumour cells, that can express wild type p53 in the world.Along with the develop rapidly of Medical Molecular Biology technology and knowledge, various advanced persons' molecular biology method all applies in the genetic treatment of tumor research.But because the generation of tumour development relates to numerous genes, and present research is mostly only at indivedual target genes, therefore, press down the knurl effect though these researchs all demonstrate in the body of the external tumor killing effect of cell levels preferably even tumor animal model, actual effect is unsatisfactory.Therefore, explore, attempt new therapy of tumor means and have crucial meaning.
Normal cell changes under the effect of various carcinogenic factors gradually until last generation canceration, has considerable gene to show the phenomenon of overexpression, and especially some promote the overexpression of malignant phenotypes' such as cell growth, invasion and attack gene.At the gene of unconventionality expression in the tumour, people have designed the method for many targeting gene therapies, and the research that wherein promotes Expression of Related Genes such as tumor growth, invasion and attack with sealing is a quite popular field.In a large amount of in the past research, people utilize sense-rna (antisense RNA) that the tumour cell cance high-expression gene is sealed, but because the restriction that sense-rna itself exists, though this class research has obtained bigger achievement at aspects such as suppressing growth of tumour cell, the migration of control cell invasion, the effect of its sealing genetic expression is still undesirable.
SiRNA (small interfering RNA, siRNA) be found to be that expression of gene provides a strong instrument in the human intervention cell.Utilize the siRNA of the double chain form of chemosynthesis, or drive little hair fastener sample RNA (the small hairpin RNA of the similar transcribe by III type promotor, shRNA), can be by sequence-specific matching principle degraded target gene, thereby target gene expression is effectively suppressed, therefore also attempted being applied to gene therapy.But because the siRNA cost of chemosynthesis is too high, and the expression of shRNA is unfavorable for regulation and control, and these factors have limited this The Application of Technology widely.
Microrna (microRNA) is naturally occurring a kind of microRNA in the cell, it is a kind of important way that level is carried out expression regulation after genetic transcription, target gene mRNA can degrade under the situation that sequence is mated fully, also can under the situation of the non-coupling fully of sequence, suppress the translation of target gene, it is a research focus in the present life science, aspect the relevant microRNA of tumour big quantity research is being arranged also, and mostly concentrating on discovery and the Function Identification of expressing discrepant various natural microRNA between normal cell and the tumour cell.
Because natural microRNA is driven by II type promotor to transcribe, if microRNA molecule like the therefore artificial design class, also should transcribe by the guiding of II type promotor, and being its transcripting starting function, the characteristics of II type promotor can regulate and control, so the expression of the artificial mi RNA in its downstream should be subjected to artificial control, and some nearest bibliographical informations of the mode of action of microRNA have confirmed this imagination.
In the present invention we to select this important step of protein synthesis of cell be target spot, design the sequence of artificial microRNA, the expression of the key protein in the arrestin matter building-up process stops by synthetic cell growth and the propagation of making of blocking protein.Because proteinic synthesizing is the process of a complexity and accurate regulation and control, need be incorporated into rrna by the initiation complex guiding mRNA that tens eukaryotic cell translation initiation factors are formed, start proteinic translation, wherein eukaryotic cell translation initiation factor 4E is responsible for 5 ' cap structure in conjunction with mRNA, has important effect, therefore will effectively block the intracellular protein synthetic to the inhibition of eukaryotic cell translation initiation factor 4E starts, thereby make cell stop new protein synthesis, and then suppress the growth and the propagation of cell because of lacking complete translation initiation complex.
In order to reach target effect to tumour cell, at China occurred frequently, grade malignancy height, curative effect and all relatively poor this knurl kind of liver cancer of prognosis, utilization in normal cell, do not express but in liver cancer cell the liver cancer cell specificity alpha-fetoprotein (alpha-fetoprotein of high expression level, AFP) characteristics, the recombinated expression regulation sequence of AFP upstream region of gene is used for the expression of microRNA of artificial design.This gene expression element does not have any expression after importing normal cell, and after importing AFP male liver cancer cell, can give expression to corresponding microRNA and block the interior protein synthesis of liver cancer cell effectively, thereby reach the growth of target inhibition liver cancer cell.
Based on thinking of the present invention, can also carry out the design of artificial microRNA as target sequence with other site of eukaryotic cell translation initiation factor 4E gene, or carry out the cell protein synthetic with other important gene in the cell protein route of synthesis as target gene and block, and then cell growth inhibiting and propagation.
Summary of the invention
A kind of hepatocellular carcinoma targeting gene expression element AE that the purpose of this invention is to provide is a kind of dna molecular, has the nucleotide sequence shown in the SEQ ID No:1.Wherein the 7th to the 827th is the-4113 to the-3292 of human a-fetoprotein (AFP) genetic transcription starting point upstreams, and a plurality of enhancement factor and hepatocyte neclear factor binding sites of transcribing are contained in this zone; The 831st to the 1012nd is the-182 to the-1 of human a-fetoprotein (AFP) genetic transcription starting point upstreams, and the basic promoter function of AFP is contained in this zone; The AFP positive cell expression regulation sequence of forming reorganization from the 1st to the 1012nd 1012bp fragment; The 1019th to the 1828th is the microRNA at the artificial design of people's eukaryotic cell translation initiation factor 4E gene that 6 series connection connect; The 1829th to the 2177th is bovine growth hormone gene polyadenylic acid signaling zone, for genetic expression provides transcription termination signal.
Another object of the present invention provides the application of this Expression element AE in the target gene therapy medicine of preparation alpha-fetoprotein (AFP) male liver cancer.This Expression element AE is after importing AFP male tumour cell, can in cell, express artificial microRNA at eukaryotic cell translation initiation factor 4E, and effectively suppress the expression of eukaryotic cell translation initiation factor 4E in the cell, and then have influence on the formation of translation initiation complex complete in the cell, final blocking protein is synthetic, cell growth inhibiting and propagation.
This Expression element AE can make up the targeting gene therapy pharmaceutical carrier, is used for the target gene therapy of AFP male liver cancer.Recombinant AFP expression regulation element in this Expression element can be used for regulating and control other expression of gene, can be used for other expression vector at the artificial microRNA sequence of people's eukaryotic cell translation initiation factor 4E reaches the expression purpose that inhibitory phase is answered cell eukaryotic cell translation initiation factor 4E.
The present invention compares with prior art and has the following advantages and effect: the gene therapy medicament that utilizes Expression element provided by the invention to prepare, its characteristics be with the embryonal antigen AFP that liver cancer cell specificity is expressed be tumor cell specific expression regulation means, with tumour cell fast in the required protein synthesis of growth in the required translation initiation complex key protein eukaryotic cell translation initiation factor 4E be that action target spot carries out expression inhibiting, it is synthetic to block intracellular protein effectively, suppresses the growth and the propagation of AFP male liver cancer cell specifically.
Description of drawings
Fig. 1 is that recombinant AFP positive cell expression regulation sequence makes up PCR product electrophorogram.
Fig. 2 is the artificial microRNA structure PCR product electrophorogram at eukaryotic cell translation initiation factor 4E.
Fig. 3 cuts the evaluation electrophorogram for the pDC312-AE enzyme.
Fig. 4 is that Western blot method detects the inhibition that AE expresses eukaryotic cell translation initiation factor 4E.
Fig. 5 is the mtt assay detected result.
Embodiment
The present invention is described further with specific embodiment in conjunction with the accompanying drawings.These embodiment only are used for explanation, but do not limit the present invention.
Embodiment 1:
The clone of recombinant AFP positive cell expression regulation sequence
At first obtain mRNA sequence (the GenBank accession number: NM_001134) of people AFP gene from the GenBank retrieval, and then the online genome compare of analysis method of warp obtains No. 4 chromosomal genome sequence (the GenBank accession number: NT_006216.14) that the people comprises the AFP gene from GenBank, and be benchmark with AFP gene mRNA sequence, with its 5 ' end as AFP genetic transcription starting point, genome sequence design synthetic primer 1:5 '-AGA TCT CAG ATT GAA TTA TTTGCC TGT CA-3 ' according to its upstream, primer 2: 5 '-GGA TCC TAG GAA GTT TTC GCA ATA ATAC-3 ', primer 3:5 '-AGATCT GCC CCA AAG AGC TCT GTG T-3 ' and primer 4:5 '-GGATCC AAA TCA TGC TGA AAT TCT TTT ATA CTC-3 ', utilize polymerase chain reaction technique (Polymerase Chain Reaction, PCR) genomic dna with human liver cancer cell SMMC7721 is a template, carry out nucleic acid amplification (primer 1 and primer 2 with above-mentioned primer, primer 3 and primer 4), obtain amplified production A (821bp) and B (180bp), referring to Fig. 1, wherein swimming lane 1,4 is 1kb DNA Ladder, swimming lane 2 is amplified production A (821bp), and swimming lane 3 is amplified production B (180bp).
Amplified production A, B are cloned into pGEM T-easy carrier (Promega company, the U.S.) respectively in T-A clone's mode, through determined dna sequence and with its exactness of genome sequence (NT_006216.14) check verify.Then A is connected to the Bgl II site of the 5 ' end of B behind restriction enzyme BamH I and Bgl II double digestion, becomes the AFP positive cell expression regulation sequence of reorganization.
Embodiment 2:
Clone at the artificial microRNA of people's eukaryotic cell translation initiation factor 4E
Obtain mRNA sequence (the GenBank accession number: NM_001968) of people's eukaryotic cell translation initiation factor 4E gene from the GenBank retrieval, utilize suitable site on this mRNA sequence of online software analysis, determine the action target spot of artificial microRNA, design synthetic primer 1:5 '-TGC TGT TGA CAGTGA GCG CGG AGC ACT AGT TTG ATT ATT ATA GTG AAG CCA CAG ATGTA-3 ', primer 2: 5 '-TCC GAG GCA GTA GGC ATG GAG CAC TAG TTT GATTAT TAT ACA TCT GTG GCT TCA CTA TA-3 ', primer 3:5 '-AGA TCT GAT CCAAGA AGG TAT ATT GCT GTT GAC AGT GAG CG-3 ' and primer 4:5 '-GGA TCCATC GTA GCC CTT GAA GTC CGA GGC AGT AGG CA-3 '.Earlier primer 1 and primer 2 are carried out overlapping extension PCR, obtain the amplified production C of 97bp, be template with this amplified production C again, carry out pcr amplification with primer 3 and primer 4, obtain the amplified production D of 142bp, referring to Fig. 2, wherein swimming lane 1 is DL2000 DNA Ladder, and swimming lane 2 is amplified production D (142bp).
Mode with the T-A clone is cloned into pGEM T-easy carrier, verifies its exactness through dna sequencing.This is promptly at the artificial microRNA sequence of people's eukaryotic cell translation initiation factor 4E.In order to strengthen its action effect, the BamH I site with reclaiming this artificial microRNA sequence and insert identical carrier again behind restriction enzyme BamH I and the BglII double digestion obtains 6 artificial microRNA sequences that are connected in series.
Embodiment 3:
The structure of hepatocellular carcinoma targeting gene expression element AE and the preparation of adenovirus carrier
At first make up the pDC312-BGHpA carrier: with adenovirus shuttle plasmid pDC312 carrier (Microbix company, the U.S.) open with restriction enzyme Xba I single endonuclease digestion, mend flat with the Klenow enzyme, use restriction enzyme HindIII single endonuclease digestion again, remove Xba I to the part between the HindIII (from HindIII, Sac I, Ecl136II, Acc I, Sal I to Xba I), recovery part one end is a flush end, and the other end is the HindIII sticky end.PcDNA3.1 (+) carrier (Invitrogen company, the U.S.) with restriction enzyme Pvu II and HindIII double digestion, recovery comprises the fragment of HindIII, Asp718, Kpn I, BamH I, BstXI, EcoR I, EcoRV, BstXI, Not I, Xho I, Xba I, Dra II, Apa I and Pme I multiple clone site and ox growth factor gene polyadenylic acid signal (BGHpA), one end is the HindIII sticky end, and the other end is the flush end of PvuII.Above-mentioned two fragments are coupled together, the pDC312-BGHpA carrier, can on multiple clone site, insert promotor and goal gene coding region.
Again the recombinant AFP positive cell expression regulation sequence among the embodiment 1 is reclaimed after with restriction enzyme BamH I and Bgl II double digestion from carrier, and the BamH I site of inserting pDC312-BGHpA, obtain having the adenovirus shuttle plasmid of recombinant AFP positive cell expression regulation sequence and BGHpA.At last with 6 reclaiming after from carrier of being connected in series with restriction enzyme BamH I and Bgl II double digestion at the artificial microRNA sequence of people's eukaryotic cell translation initiation factor 4E, insert the BamH I site of this shuttle plasmid, obtain having the adenovirus shuttle plasmid of complete hepatoma targeting character Expression element AE, enzyme is cut qualification result and is conformed to fully with expection, referring to Fig. 3, wherein swimming lane 1 is 1Kb Plus DNAMarker; Swimming lane 2 is cut through BamH I, Bgl I, EcoR I enzyme for pDC312-AE.
With above-mentioned adenovirus shuttle plasmid and adenovirus skeleton plasmid pBHGlox (delta) E1 that has complete hepatoma targeting character Expression element AE, 3cre (Microbix company, the U.S.) cotransfection adenovirus packaging cell 293 cells obtain having the adenovirus carrier of Expression element AE.
Embodiment 4:
Gene expression element AE is to the target inhibition of AFP masculine liver cancer cell
A, Western blot method detect the inhibition that AE expresses eukaryotic cell translation initiation factor 4E
The AFP male liver cancer cell Hep3B cell of taking the logarithm vegetative period is by 3 * 10
5The density of cells/well is inoculated in 6 orifice plates, cultivates to make it adherent and reach 80% degree of converging in 24 hours.With the above-mentioned adenovirus that has Expression element AE of substratum dilution, with infection multiplicity (multiplicity of infection, MOI) be 100pfu/cell and 10pfu/cell cells infected, termination effect behind the 48hr, extract total protein of cell, carry out SDS-polyacrylamide gel electrophoresis (10% separation gel, 5% concentrates glue), then albumen is gone to pvdf membrane, sealing back and monoclonal antibody (the SantaCruz Biotechnology that dilutes anti-eukaryotic cell translation initiation factor 4E at 1: 1000, Inc., the U.S., eIF4E (P-2): sc-9976) combination, behind the room temperature 2hr, wash film 3 times with TBST, in conjunction with the anti-mouse IgG antibody of HRP mark (Bioisystech Co., Ltd of China fir Golden Bridge in Beijing), wash film once more again, use chemical luminescence reagent kit (Roche company then, the U.S.) develop X-ray sheet exposure.With GAPDH is internal reference, with the same combination of GAPDH antibody (go up the Haikang and become Bioisystech Co., Ltd), development and the exposure of HRP mark.The band green fluorescent protein is established in experiment, and (greenfluorescent protein, adenovirus infection GFP) and the cell of no adenovirus infection compare.The result shows that referring to Fig. 4 the eukaryotic cell translation initiation factor 4E expression among the AFP masculine liver cancer cell Hep3B that infects the adenovirus that has Expression element AE obviously is suppressed.G among the figure: eukaryotic cell translation initiation factor 4E expressed after band AE adenovirus MOI was respectively 100 and 10 infection Hep3B liver cancer cells; GFP: eukaryotic cell translation initiation factor 4E expressed after band GFP adenovirus MOI was respectively 100 and 10 infection Hep3B liver cancer cells; N: do not infect that eukaryotic cell translation initiation factor 4E expresses in the Hep3B liver cancer cell of adenovirus.
B, in-vitro cell growth inhibition test (mtt assay)
Liver cancer cell Hep3B, the HepG2 that takes the logarithm vegetative period, SMMC7721 and breast cancer cell Bcap37 (non-liver cancer cell) are by 2 * 10
3The density of cells/well is inoculated in 96 orifice plates, cultivates to make it adherent in 24 hours.With the adenovirus of band AE is 200pfu/cell, 100pfu/cell, 50pfu/cell, 10pfu/cell, 1pfu/cell and 0pfu/cell cells infected with MOI.After 4 days, every hole adds MTT solution (5mg/ml) 20ul at virus infection, and 37 ℃ are continued to cultivate 4hr, end to cultivate.Discard culture supernatant, every hole adds DMSO 200ul, and vibration 10min fully dissolves crystallisate, measures each hole 570nm wavelength OD value on enzyme-linked immunosorbent assay instrument.Cell survival rate=(not effect group of virus function group OD value/virus OD value) * 100%.Set up 5 multiple holes, repeat 3 times for every group.As can be seen from Figure 5, the adenovirus of the band AE of different MOI all has in various degree inhibition to the growth of different liver cancer cell Hep3B, HepG2 and SMMC7721, and Bcap37 does not then have obvious inhibition to breast cancer cell (non-liver cancer cell).
The sequence that the present invention relates to
＜120〉a kind of hepatocellular carcinoma targeting gene expression element AE and application thereof
<160>9
<210>1
<211>2177
<212>DNA
＜213〉artificial sequence
<220>
＜223〉alph-fetoprotein positive liver cancer cell specificity Expression element AE sequence
<400>1
DNASIS
SEQ
agatctcaga?ttgaattatt?tgcctgtcat?acagctaata?attgaccata?agacaattag?60
atttaaatta?gttttgaatc?tttctaatac?caaagttcag?tttactgttc?catgttgctt?120
ctgagtggct?tcacagactt?atgaaaaagt?aaacggaatc?agaattacat?caatgcaaaa?180
gcattgctgt?gaactctgta?cttaggacta?aactttgagc?aataacacat?atagattgag?240
gattgtttgc?tgttagtata?caaactctgg?ttcaaagctc?ctctttattg?cttgtcttgg?300
aaaatttgct?gttcttcatg?gtttctcttt?tcactgctat?ctatttttct?caaccactca?360
catggctaca?ataactgtct?gcaagcttat?gattcccaaa?tatctatctc?tagcctcaat?420
cttgttccag?aagataaaaa?gtagtattca?aatgcacatc?aacgtctcca?cttggagggc?480
ttaaagacgt?ttcaacatac?aaaccgggga?gttttgcctg?gaatgtttcc?taaaatgtgt?540
cctgtagcac?atagggtcct?cttgttcctt?aaaatctaat?tacttttagc?ccagtgctca?600
tcccacctat?ggggagatga?gagtgaaaag?ggagcctgat?taataattac?actaagtcaa?660
taggcataga?gccaggactg?tttgggtaaa?ctggtcactt?tatcttaaac?taaatatatc?720
caaaactgaa?catgtactta?gttactaagt?ctttgacttt?atctcattca?taccactcag?780
ctttatccag?gccacttatt?tgacagtatt?attgcgaaaa?cttcctagga?tctgccccaa?840
agagctctgt?gtccttgaac?ataaaataca?aataaccgct?atgctgttaa?ttattggcaa?900
atgtcccatt?ttcaacctaa?ggaaatacca?taaagtaaca?gatataccaa?caaaaggtta?960
ctagttaaca?ggcattgcct?gaaaagagta?taaaagaatt?tcagcatgat?ttggatctga?1020
tccaagaagg?tatattgctg?ttgacagtga?gcgcggagca?ctagtttgat?tattatagtg?1080
aagccacaga?tgtataataa?tcaaactagt?gctccatgcc?tactgcctcg?gacttcaagg?1140
gctacgatgg?atctgatcca?agaaggtata?ttgctgttga?cagtgagcgc?ggagcactag?1200
tttgattatt?atagtgaagc?cacagatgta?taataatcaa?actagtgctc?catgcctact?1260
gcctcggact?tcaagggcta?cgatggatct?gatccaagaa?ggtatattgc?tgttgacagt?1320
gagcgcggag?cactagtttg?attattatag?tgaagccaca?gatgtataat?aatcaaacta?1380
gtgctccatg?cctactgcct?cggacttcaa?gggctacgat?ggatctgatc?caagaaggta?1440
tattgctgtt?gacagtgagc?gcggagcact?agtttgatta?ttatagtgaa?gccacagatg?1500
tataataatc?aaactagtgc?tccatgccta?ctgcctcgga?cttcaagggc?tacgatggat?1560
ctgatccaag?aaggtatatt?gctgttgaca?gtgagcgcgg?agcactagtt?tgattattat?1620
agtgaagcca?cagatgtata?ataatcaaac?tagtgctcca?tgcctactgc?ctcggacttc?1680
aagggctacg?atggatctga?tccaagaagg?tatattgctg?ttgacagtga?gcgcggagca?1740
ctagtttgat?tattatagtg?aagccacaga?tgtataataa?tcaaactagt?gctccatgcc?1800
tactgcctcg?gacttcaagg?gctacgatgg?atccactagt?ccagtgtggt?ggaattctgc?1860
agatatccag?cacagtggcg?gccgctcgag?tctagagggc?ccgtttaaac?ccgctgatca?1920
gcctcgactg?tgccttctag?ttgccagcca?tctgttgttt?gcccctcccc?cgtgccttcc?1980
ttgaccctgg?aaggtgccac?tcccactgtc?ctttcctaat?aaaatgagga?aattgcatcg?2040
cattgtctga?gtaggtgtca?ttctattctg?gggggtgggg?tggggcagga?cagcaagggg?2100
gaggattggg?aagacaatag?caggcatgct?ggggatgcgg?tgggctctat?ggcttctgag?2160
gcggaaagaa?ccagctg?2177
<210>2
<211>29
<212>DNA
＜213〉artificial sequence
<220>
＜223〉the AFP upstream expression regulation sequence amplification primers 1 that designs according to the AFP genome sequence
<400>2
agatctcaga?ttgaattatt?tgcctgtca?29
<210>3
<211>28
<212>DNA
＜213〉artificial sequence
<220>
＜223〉the AFP upstream expression regulation sequence amplification primers 2 that designs according to the AFP genome sequence
<400>3
ggatcctagg?aagttttcgc?aataatac?28
<210>4
<211>25
<212>DNA
＜213〉artificial sequence
<220>
＜223〉the AFP upstream expression regulation sequence amplification primers 3 that designs according to the AFP genome sequence
<400>4
agatctgccc?caaagagctc?tgtgt?25
<210>5
<211>33
<212>DNA
＜213〉artificial sequence
<220>
＜223〉the AFP upstream expression regulation sequence amplification primers 4 that designs according to the AFP genome sequence
<400>5
ggatccaaat?catgctgaaa?ttcttttata?ctc?33
<210>6
<211>59
<212>DNA
＜213〉artificial sequence
<220>
＜223〉at the artificial microRNA amplification primers 1 of eukaryotic cell translation initiation factor 4E gene design
<400>6
tgctgttgac?agtgagcgcg?gagcactagt?ttgattatta?tagtgaagcc?acagatgta?59
<210>7
<211>59
<212>DNA
＜213〉artificial sequence
<220>
＜223〉at the artificial microRNA amplification primers 2 of eukaryotic cell translation initiation factor 4E gene design
<400>7
tccgaggcag?taggcatgga?gcactagttt?gattattata?catctgtggc?ttcactata?59
<210>8
<211>41
<212>DNA
＜213〉artificial sequence
<220>
＜223〉at the artificial microRNA amplification primers 3 of eukaryotic cell translation initiation factor 4E gene design
<400>8
agatctgatc?caagaaggta?tattgctgtt?gacagtgagc?g?41
<210>9
<211>38
<212>DNA
＜213〉artificial sequence
<220>
＜223〉at the artificial microRNA amplification primers 4 of eukaryotic cell translation initiation factor 4E gene design
<400>9
ggatccatcg?tagcccttga?agtccgaggc?agtaggca?38
Claims (2)
1. hepatocellular carcinoma targeting gene expression element AE, be a kind of dna molecular, has the nucleotide sequence shown in the SEQ ID No:1, wherein the 7th to the 827th is the-4113 to the-3292 of human a-fetoprotein gene transcripting start point upstreams, a plurality of enhancement factor and hepatocyte neclear factor binding sites of transcribing are contained in this zone, the 831st to the 1012nd is the-182 to the-1 of human a-fetoprotein gene transcripting start point upstreams, the basic promoter function of alpha-fetoprotein is contained in this zone, the alph-fetoprotein positive cell expressing regulating and controlling sequence of forming reorganization from the 1st to the 1012nd 1012bp fragment, the 1019th to the 1828th is the microRNA at the artificial design of people's eukaryotic cell translation initiation factor 4E gene that 6 series connection connect, the 1829th to the 2177th is bovine growth hormone gene polyadenylic acid signaling zone, for genetic expression provides transcription termination signal.
2. the application of a kind of hepatocellular carcinoma targeting gene expression element AE according to claim 1 in the target gene therapy medicine of the liver cancer of preparation alph-fetoprotein positive.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104611334A (en) * | 2015-01-19 | 2015-05-13 | 浙江省医学科学院 | Genetic expression element for inhibiting growth of tumor cell and application of genetic expression element |
| CN104641231A (en) * | 2012-07-20 | 2015-05-20 | 哈佛大学 | Cell based quality control bioassays for nutriceutical and medicinal products |
| CN110312801A (en) * | 2017-02-20 | 2019-10-08 | 阿瑞纳生物公司 | System and method for the cell type specificity translation of RNA molecule in eukaryocyte |
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| NZ545134A (en) * | 2003-09-18 | 2009-06-26 | Lilly Co Eli | Modulation of eIF4E expression |
| CN101855231B (en) * | 2007-06-19 | 2014-06-11 | 路易斯安那州州立大学及农业机械学院管理委员会 | Synthesis and use of anti-reverse phosphorothioate analogs of the messenger RNA cap |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104641231A (en) * | 2012-07-20 | 2015-05-20 | 哈佛大学 | Cell based quality control bioassays for nutriceutical and medicinal products |
| US9952200B2 (en) | 2012-07-20 | 2018-04-24 | President And Fellows Of Harvard College | Cell based quality control bioassays for nutriceutical and medicinal products |
| CN104611334A (en) * | 2015-01-19 | 2015-05-13 | 浙江省医学科学院 | Genetic expression element for inhibiting growth of tumor cell and application of genetic expression element |
| CN110312801A (en) * | 2017-02-20 | 2019-10-08 | 阿瑞纳生物公司 | System and method for the cell type specificity translation of RNA molecule in eukaryocyte |
| CN110312801B (en) * | 2017-02-20 | 2023-11-03 | 阿瑞纳生物科技有限公司 | Systems and methods for cell type specific translation of RNA molecules in eukaryotic cells |
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