WO2006064813A1 - 核酸構築物及びそれを利用した標的領域への変異導入方法 - Google Patents
核酸構築物及びそれを利用した標的領域への変異導入方法 Download PDFInfo
- Publication number
- WO2006064813A1 WO2006064813A1 PCT/JP2005/022890 JP2005022890W WO2006064813A1 WO 2006064813 A1 WO2006064813 A1 WO 2006064813A1 JP 2005022890 W JP2005022890 W JP 2005022890W WO 2006064813 A1 WO2006064813 A1 WO 2006064813A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base sequence
- nucleic acid
- stranded dna
- acid construct
- stranded
- 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.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K48/00—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy
- A61K48/005—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy characterised by an aspect of the 'active' part of the composition delivered, i.e. the nucleic acid delivered
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- 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
- C12N15/10—Processes for the isolation, preparation or purification of DNA or RNA
- C12N15/102—Mutagenizing nucleic acids
Definitions
- the present invention relates to a nucleic acid construct having a single-stranded DNA and a single-stranded nucleic acid annealed to the single-stranded DNA, a method for introducing a mutation into a target region using the nucleic acid construct, and the like.
- the Small Fragment Homologous Replacement (SFHR) method converts a mutant gene into a normal form by introducing a heat-denatured PCR product containing a normal sequence into a cell. (Non-Patent Documents 1 to 3).
- Rad51 which is involved in homologous recombination in mammalian cells, is known as an indispensable protein for repairing errors in DNA replication that occur during cell division because the knockout animal is lethal to embryos.
- Rad51 prefers single-stranded DNA as a substrate rather than double-stranded in in vitro homologous recombination reaction (Non-patent Documents 6 and 7). ).
- Rad51 is known to use Tailed Duplex, which has a double-stranded structure in a part of single-stranded DNA, as a substrate for better homologous recombination reaction compared to normal single-stranded DNA (non-patented). Reference 7).
- Non-Patent Document 1 Kunzelmann K. et al., “Gene targeting of CFTR DNA in CF epitherial cells. J, Gene Ther., 1996, III, pages 859-867
- Non-Patent Document 2 Goncz K et al., "Targeted replacement of normal and mutant CFTR seq uences in human airway epithelial cells using DNA fragments.” Hum Mol Genet., 19 1998, pp. 713-1919
- Non-Patent Document 3 Colosimo A et al., "Targeted correction of a defective selectable marker gene in human epithelial cells by small DNA fragments.”, Mol Ther "2001, III, pp. 178-185
- Non-Patent Document 4 West SC., “Molecular views of recombination proteins and their controls. J, Nature Rev. Mol. Cell Biol., 2003, IV, pp. 435-445
- Patent Document 5 Bertrand P et al., “P53's double life: transactivation-indipendent repressi on of homologous recombination.”, Trends Genet., 2004, Vol. 20, pp 235-243
- Non-Patent Document 6 Baumann P et al, ⁇ Human rad51 protein promotes ATP-dependent horn ologous pairing and strand transfer reactions in vitro. ", Cell, 1996, 87 ⁇ , 757-766.
- Non-Patent Document 7 Mazin AV et al., “Tailed duplex DNA is the preferred substrate for prote in-mediated homologous pairing.”, EMBO J., 2000, No. 19, pages 1148-1156 Disclosure of the Invention
- the present invention relates to a nucleic acid construct capable of introducing a mutation into a target region of double-stranded DNA in a cell, a method for introducing a mutation into a target region using the nucleic acid construct, and the nucleic acid construct introduced It is an object of the present invention to provide an isolated cell, an individual organism having the cell, and the like.
- the present invention relates to a base sequence of a sense strand side region or an antisense strand side region of a target region existing in a double stranded DNA in a cell.
- a single nucleotide comprising a nucleotide sequence in which a plurality of bases are deleted, substituted, inserted or added, and has a homology of 90% or more with the nucleotide sequence of the sense strand side region or the antisense strand side region.
- a nucleic acid construct comprising a strand DNA and a single-stranded nucleic acid comprising a base sequence complementary to a part of the single-stranded DNA and annealed to the single-stranded DNA.
- the present invention provides a therapeutic agent for a disease caused by an abnormal base sequence contained in a target region present in intracellular double-stranded DNA, comprising the nucleic acid construct of the present invention. provide.
- the present invention comprises a cell individual or non-human organism individual that does not constitute an organism individual.
- a method for introducing a mutation into a base sequence of a target region present in a double-stranded DNA in a cell comprising the step of introducing the nucleic acid construct of the present invention into the cell.
- the present invention provides a cell into which the nucleic acid construct of the present invention has been introduced.
- the present invention provides a non-human organism individual having the cell of the present invention.
- the number of bases of the single-stranded DNA is preferably 300 to 3000, and the number of bases of the single-stranded nucleic acid is preferably 15 to 100.
- the single-stranded nucleic acid is deleted, substituted, inserted or added to the sense strand side region or the antisense strand side region of the single-stranded DNA.
- the single-stranded nucleic acid is deleted, substituted, inserted or added to the sense strand side region or the antisense strand side region of the single-stranded DNA. It is preferable to anneal to a portion located 5 ′ or 3 ′ from any of the bases.
- the single-stranded nucleic acid comprises a base sequence complementary to the base sequence of the 5 'end side portion or 3' end side portion of the single stranded DNA, and the single strand It is preferable to anneal to the 5 'end part or 3' end part of DNA.
- nucleic acid construct of the present invention the single-stranded nucleic acid is represented by the following formula (I):
- A represents a base sequence composed of two or more arbitrary bases
- B represents a salt represented by A.
- the single-stranded nucleic acid has the following formula (II):
- A represents a base sequence composed of two or more arbitrary bases
- B represents a base sequence complementary to the base sequence represented by A, consisting of three or more arbitrary bases
- C represents a base sequence complementary to the base sequence represented by A
- D represents the single-stranded D
- a partial force consisting of the base sequence represented by A and a partial force consisting of the base sequence represented by A are annealed to form a hairpin structure.
- any one of the bases deleted, substituted, inserted or added to the sense strand side region or the antisense strand side region is 5% of the single-stranded DNA. It is preferred that it is not present in the 'terminal part or 3' terminal part.
- the nucleic acid construct of the present invention has a plurality of single-stranded nucleic acids annealed to the single-stranded DNA, and each of the plurality of single-stranded nucleic acids has a base sequence of a different part of the single-stranded DNA. It is preferable to include a complementary base sequence.
- the target region contains an abnormal base sequence causing a disease
- the single-stranded DNA is a sense strand side region or an antisense strand side region of the target region.
- the base sequence comprises a base sequence in which one or more bases are deleted, substituted, inserted or added so that the abnormal base sequence becomes a normal base sequence.
- FIG. 1 is a schematic view showing an embodiment of the nucleic acid construct of the present invention.
- FIG. 2 is a schematic diagram showing the configuration of pTENHEX.
- FIG. 3 Nucleic acid construct Sl consisting of fragment 1 alone, fragment 2 annealed to fragment 1 and fragment 2, nucleic acid construct S2 consisting of fragment 3 annealed to fragment 1 and fragment 1, and fragment 1 annealed to fragment 1 and fragment 1.
- FIG. 4 is a diagram showing the repair efficiency of the HygEGFP gene.
- the nucleic acid construct of the present invention has one or more bases in the base sequence of the sense strand side region or the antisense strand side region of the target region present in the double stranded DNA in the cell.
- a single-stranded DNA consisting of a base sequence that has been deleted, substituted, inserted or added, and whose homology with the base sequence of the sense strand side region or antisense strand side region is 90% or more, and A single-stranded nucleic acid containing a base sequence complementary to a part of the base sequence and annealed to single-stranded DNA.
- the region containing the base sequence to be mutated is the target region. Since double-stranded DNA is composed of a sense strand and an antisense strand, the target region is composed of a sense strand side region and an antisense strand side region.
- the base sequence of the sense strand side region and the base sequence of the antisense strand side region are complementary, and the number of bases in the sense strand side region and the antisense strand side region is the same, usually 300 to 3000, preferably 300 to 1500. More preferably, it is 300-900.
- the double-stranded DNA in which the target region exists may be an endogenous double-stranded DNA (genomic DNA), or an exogenous double-stranded DNA (foreign DNA introduced into the cell). ), but preferably it is endogenous double-stranded DNA (genomic DNA).
- the target region may be any region of the intracellular double-stranded DNA, but is preferably a region containing an abnormal base sequence that causes a disease.
- An abnormal base sequence is a base in which one or more bases are deleted, substituted, inserted or added in the normal base sequence. Is an array. Examples of mutations that cause disease include Huntington's disease
- Examples include long-chain insertion mutations due to CAG repeats, long-chain deletion mutations in the dystrophin gene of muscular dystrophy, and single nucleotide substitutions in the factor 9 gene of hemophilia.
- the target region for example, a region including part or all of a structural gene region, a regulatory gene region and the like can be selected.
- the structural gene region is a region that defines the amino acid sequence of a protein, and the eukaryotic structural gene region includes both exons and introns.
- Examples of the regulatory gene region include an operator region, a promoter region, and a attenuation region.
- the number of bases deleted, substituted, inserted or added to the base sequence of the sense strand side region or antisense strand side region is the base sequence of the sense strand side region or antisense strand side region.
- the number is not particularly limited, but is usually 1 to 10, preferably 1 to 5, and more preferably 1 to 3.
- Single-stranded DNA is linear and its ends are unmodified. That is, single-stranded DNA is natural DNA and does not include non-natural DNA with modified ends, such as phosphorothioate DNA.
- the position of the base that is deleted, substituted, inserted or added to the base sequence of the sense strand side region or the antisense strand side region is not particularly limited, but the target region is the source of the disease. If the base sequence in the sense strand side region or the antisense strand side region is included, one or more bases are missing so that the abnormal base sequence becomes a normal base sequence. It is preferably deleted, substituted, inserted or added.
- the homology between the nucleotide sequence of the single-stranded DNA and the nucleotide sequence of the sense strand side region or the antisense strand side region is 90% or more, preferably 95% or more, more preferably 99% or more. is there. If the base sequence of the single-stranded DNA has 90% or more homology with the base sequence of the sense strand side region, the single-stranded DNA is considered to be capable of homologous substitution with the sense strand side region. If the base sequence of the strand DNA has 90% or more homology with the base sequence of the antisense strand side region, the single-stranded DNA is considered to be capable of homologous substitution with the antisense strand side region. Homologous substitution with the sense strand side region or antisense strand side region of single-stranded DNA is one of the mechanisms for introducing a mutation into the base sequence of the target region by the nucleic acid construct of the present invention. Can be considered.
- the number of bases of single-stranded DNA varies depending on the mutation added to the base sequence of the sense strand side region or antisense strand side region. Usually 300 to 3000, preferably 300 to 1500, more preferably Is 300-900.
- the single-stranded nucleic acid may be any of DNA, RNA, nucleic acid derivatives, nucleic acid analogs and the like.
- nucleic acid derivatives or analogs include phosphorothioate DNA, phosphoroate RNA, 2'-0_Me-RNA, LNA (Locked nucleic acid), PNA (peptide nucleic acid), ENA (Ethylene-bridged nucleic acid), etc. Be bald.
- the single-stranded nucleic acid may contain a base sequence 1J complementary to the base sequence of any part of the single-stranded DNA as long as it can be annealed to the single-stranded DNA.
- the mutation to the target region Introduction efficiency can be improved.
- the 5 'end portion of the single-stranded DNA is a portion comprising a base sequence containing a base located at the 5' end of the single-stranded DNA, and the 3 'end portion of the single-stranded DNA is This part consists of a base sequence containing a base located at the 3 'end of the double-stranded DNA.
- the single-stranded DNA In the single-stranded DNA, the relationship between the position of the base deleted, substituted, inserted or added to the sense-strand region or the antisense-strand region and the position where the single-stranded nucleic acid anneals.
- the single-stranded nucleic acid has been deleted, substituted, inserted or added to the sense strand region or the antisense strand region of the single-stranded DNA. It contains a base sequence that is complementary to the base sequence of the part that does not contain any of the bases, and is deleted, substituted, inserted, or added to the sense strand side region or antisense strand side region of single-stranded DNA. It is recommended to anneal the part, and not to include any deviations.
- the single-stranded nucleic acid is 5 'from the base that is deleted, substituted, inserted, or added to the sense strand side region or the antisense strand side region of the single strand DNA or
- the single-stranded nucleic acid is deleted, substituted, inserted, or inserted into the sense strand side region or the antisense strand side region of the single strand DNA. Is annealed to a portion that does not contain any of the added bases, such a nucleic acid construct can improve the efficiency of introducing a mutation into the target region.
- the single-stranded nucleic acid is located 3 ′ of any single-stranded DNA that is deleted, substituted, inserted, or added to the sense strand side region or the antisense strand side region. According to the nucleic acid construct annealed to the portion to be converted, the efficiency of introducing a mutation into the target region can be improved.
- the single-stranded nucleic acid anneals to the 5 'end side portion or 3' end side portion of the single-stranded DNA, and the nucleic acid construct has a sense strand side region or an anti-antigenic region. If any base deleted, substituted, inserted or added to the sense strand side region is not present in the 5 ′ end portion or 3 ′ end portion of the single stranded DNA, the single stranded nucleic acid In such a single-stranded DNA, it will anneal to a portion that does not contain any bases deleted, substituted, inserted or added to the sense strand side region or the antisense strand side region. According to the nucleic acid construct, the efficiency of introducing a mutation into the target region can be improved.
- the base number of the base sequence complementary to a part of the base sequence of the single-stranded DNA contained in the single-stranded nucleic acid is usually 15 to 100, preferably 20 to 70, more preferably 20 to 50. .
- the single-stranded nucleic acid may consist only of a base sequence complementary to a part of the base sequence of the single-stranded DNA, or any arbitrary sequence at the 5 'end and / or 3' end of the base sequence. It may consist of a base sequence with a base sequence attached.
- the single-stranded nucleic acid consists of a base sequence that has a base sequence complementary to a part of the base sequence of single-stranded DNA and an arbitrary base sequence added to the Z or 3 'end
- the single-stranded nucleic acid Among nucleic acids, a part consisting of a base sequence complementary to a part of the base sequence of single-stranded DNA is annealed to the corresponding part of single-stranded DNA.
- Nucleotide base sequence is usually 25 to 130, preferably 25 to 100, more preferably 25 to 80.
- a single-stranded nucleic acid consists of a base sequence complementary to a part of the base sequence of single-stranded DNA
- the nucleic acid construct 10a is composed of a single-stranded DNA 20 and a base sequence complementary to the 5 'terminal portion 21 of the single-stranded DNA 20, and is a single-stranded DNA.
- a single-stranded nucleic acid 30a annealed to the 5 'end portion 21 of DNA 20.
- the nucleic acid construct 10b is composed of a single-stranded DNA 20 and a base sequence complementary to the 3 'terminal portion 22 of the single-stranded DNA 20, And a single-stranded nucleic acid 30b annealed to 20 '3' terminal portion 22.
- A represents an arbitrary base sequence composed of two or more bases. Represented by A
- the upper limit of the number of bases in the base sequence is not particularly limited, but is usually 30, preferably 20, and more preferably 10.
- the base sequence represented by A is not particularly limited
- the CG content is usually 70% or more, preferably 80% or more, more preferably 90% or more.
- B is a group that does not include a base sequence complementary to the base sequence represented by A, 3
- the limit value is not particularly limited, but is usually 10, preferably 7, and more preferably 5.
- the base sequence represented by B does not include a base sequence complementary to the base sequence represented by A.
- the base sequence is not particularly limited, but can form a thermally stable loop.
- the single-stranded nucleic acid is DNA
- it is preferably gaa, gxya, gxay (x and y represent arbitrary bases) and the like.
- C represents a base sequence complementary to the base sequence represented by A.
- D is a base sequence complementary to the base sequence of the 5 ′ end portion of the single-stranded DNA.
- the base sequence represented by D usually has 15 bases.
- Fig. 1 (c) shows an embodiment of the nucleic acid construct of the present invention in the case where the single-stranded nucleic acid consists of a base sequence represented by the formula (I).
- the nucleic acid construct 10c is composed of a single-stranded DNA 20 and a base sequence represented by the formula (I) annealed to the single-stranded DNA 20.
- the hairpin structure is formed by annealing the portion consisting of the sequence.
- An example is a single-stranded nucleic acid that anneals to a base sequence portion to form a hairpin structure.
- A represents an arbitrary base sequence composed of two or more bases. Represented by A
- the upper limit of the number of bases in the base sequence is not particularly limited, but is usually 30, preferably 20, and more preferably 10.
- the base sequence represented by A is not particularly limited
- the CG content is usually 70% or more, preferably 80% or more, more preferably 90% or more.
- B does not include a base sequence complementary to the base sequence represented by A, 3
- the upper limit is not particularly limited, but is usually 10, preferably 7, and more preferably 5.
- the base sequence represented by B includes a base sequence complementary to the base sequence represented by A.
- the base sequence is not particularly limited as long as it is not limited, but can form a thermally stable loop.
- ⁇ IJ for example, gaa, gxya, gxay (x and y represent any base) when the single-stranded nucleic acid is DNA is preferable.
- C represents a base sequence complementary to the base sequence represented by A.
- D represents a base sequence complementary to the base sequence of the 3 ′ end portion of the single-stranded DNA.
- the number of bases of the base sequence represented by D is usually 15-100, preferably 20-70, and more preferably 20-50.
- Fig. 1 (d) shows an embodiment of the nucleic acid construct of the present invention in the case where the single-stranded nucleic acid has a base sequence represented by the formula (II).
- the nucleic acid construct 10d has a single-stranded DNA 20 and a single-stranded nucleic acid 30d comprising a base sequence represented by the formula ( ⁇ ), and is single-stranded.
- nucleic acid 30d the portion consisting of base sequence IJ represented by D is annealed to the 3 ′ end side portion 24 of single-stranded DNA 20, and the portion consisting of the base sequence represented by A is C
- the hairpin structure is formed by annealing the portion consisting of the base sequence represented by
- the number of single-stranded nucleic acids annealed to single-stranded DNA is not particularly limited, and may be singular or plural.
- each of the multiple single-stranded nucleic acids contains a base sequence complementary to the base sequence of a different part of the single-stranded DNA. Annealing to a different part of chain DN A.
- the region of single-stranded DNA that is annealed by one single-stranded nucleic acid and the region that is annealed by another single-stranded nucleic acid are continuous. It can be discontinuous.
- FIGS. 1 (e) and 1 (f) are schematic diagrams showing one embodiment of the nucleic acid construct of the present invention when two single-stranded nucleic acids are annealed to single-stranded DNA.
- the nucleic acid construct 10e is composed of a single-stranded DNA 20 and a base sequence complementary to the 5'-end portion 25 of the single-stranded DNA 20, It consists of a single-stranded DNA that is complementary to the single-stranded nucleic acid 30e annealed to the 5'-end portion 25 of the DNA and the portion 26 adjacent to the 5'-end portion 25 of the single-stranded DNA 20. Part 26 of the single-stranded nucleic acid 31e annealed. Of the single-stranded DNA, the 5 ′ end portion 25 and the 5 ′ end portion 25 The part 26 adjacent to is continuous.
- the nucleic acid construct 10f is composed of a single-stranded DNA 20 and a base sequence complementary to the 5 'terminal portion 27 of the single-stranded DNA 20, and is a single-stranded DNA. It consists of a single-stranded nucleic acid 30f annealed to the 5'-end part 27 of DNA and a base sequence complementary to the part 28 located in the vicinity of the 5'-end part 27 of single-stranded DNA 20. A single-stranded nucleic acid 31f annealed to portion 28 of the strand DNA. In the single-stranded DNA, the 5 ′ end portion 27 and the portion 28 located in the vicinity of the 5 ′ end portion 27 are discontinuous.
- Single-stranded DNA and single-stranded nucleic acid can be prepared using a known chemical synthesis method. At this time, it is possible to synthesize a plurality of short strands (for example, about 100 bases in length) and connect them by a known ligation method to produce single-stranded DNA and single-stranded nucleic acid of the desired base length. it can.
- Single-stranded DNA is prepared by restriction enzyme treatment of phage or phagemid DNA prepared by a mutagenesis-type PCR using a double-stranded DNA having a target region as a cage or a commercially available mutagenesis kit. be able to.
- the therapeutic agent of the present invention is a therapeutic agent for a disease caused by an abnormal base sequence contained in a sense strand side region or an antisense strand side region in a target region present in intracellular double-stranded DNA.
- a therapeutic agent comprising the nucleic acid construct of the present invention.
- the therapeutic agent of the present invention preferably contains the nucleic acid construct in a form capable of being introduced into cells.
- a form capable of being introduced into cells include a form dispersed in an appropriate solvent (for example, water), a form encapsulated inside a hollow nanoparticle, a ribosome, and a complex with a cationic polymer.
- the method of the present invention is a method for introducing a mutation into the base sequence of a target region present in double-stranded DNA in a cell, the method comprising introducing the nucleic acid construct of the present invention into a cell. is there.
- the cell may be either a cell that does not constitute an organism individual or a cell that constitutes an organism individual.
- the species of cells from which the cells can be eukaryotic or prokaryotic.
- the biological species from which the cells are derived may be, for example, mammals, animals such as birds, insects, plants, microorganisms, etc., but mammals that are preferably animals are more preferable. .
- mammals for example Examples include humans, monkeys, rabbits, hidges, goats, horses, pigs, rabbits, dogs, cats, rats, mice, guinea pigs, and the like.
- prokaryotic microorganisms that can be either prokaryotic microorganisms or eukaryotic microorganisms include, for example, Gram-positive bacteria (for example, Micrococcus genus, Staphylo coccus j3 ⁇ 4, Bacillus genus, Clostridium genus, Lactobacillus ⁇ , and orynebactermmj3 ⁇ 4, Strepto myces moths), ghhum negative moths (eg, Rhodopseudomonas moth, Pseudomonas moth, Esheri chia genus, Salmonella genus, Nitrobacter genus, Thiobacillus genus, Neisseria genus etc.) Examples thereof include fungi such as filamentous fungi (molds) and yeast.
- Gram-positive bacteria for example, Micrococcus genus, Staphylo coccus j3 ⁇ 4, Bacillus genus, Clostridium genus
- the type of cell is not particularly limited, and examples include somatic cells, germ cells, stem cells, or cultured cells thereof.
- somatic cells include neurological tissues such as the brain and spinal cord; sensory organs such as retinal cells and olfactory cells; digestive organs such as the esophagus, stomach, small intestine, and large intestine; respiratory organs such as the lung and trachea; Genital organs such as testis, ovary, uterus and placenta; urinary organs such as kidney and bladder; hematopoietic organs such as bone marrow cells and blood cells; muscle tissues such as skeletal muscle, smooth muscle and heart muscle; osteoblasts and osteoclasts Bone tissue; various tissues such as skin tissues such as skin and hair root cells; living cells isolated from organs thereof or cultured cells thereof can be mentioned.
- germ cells include eggs, sperm or cultured cells thereof.
- stem cells include embryonic stem cells (ES cells), embryonic germ cells (EG cells), trophoblast
- nucleic acid construct of the present invention As a method for introducing the nucleic acid construct of the present invention into a cell, for example, it is possible to use an electoporation method, a calcium phosphate method, a lipofusion method, a microinjection method and the like.
- the sense strand side region or the antisense strand side region of the target region present in the double stranded DNA in the cell is included in the nucleic acid construct of the present invention. Mutation similar to that of homologous substitution with single-stranded DNA (deletion, substitution, insertion or addition of one or more bases) occurs in one of the sense strand and antisense strand regions.
- the other region is modified to be complementary to the other region, and as a result, mutations are introduced into both the sense strand side region and the antisense strand side region.
- the target region contains an abnormal base sequence causing a disease
- the target region is changed to an abnormal base sequence.
- a disease caused by the abnormal base sequence can be treated.
- Cells into which mutations have been introduced into the target region and individual organisms that possess the cells are useful as screening systems, disease models, and the like that differ from normal types in sensitivity to specific compounds.
- the individual organism having the nucleic acid construct of the present invention may be an individual organism into which the nucleic acid construct of the present invention has been introduced into cells constituting the individual organism, or the nucleic acid construct of the present invention is introduced. It may be an individual organism transplanted with the transplanted cells.
- HygEGFP is a fusion gene of a hygromycin resistance gene (Hyg) and a green fluorescent protein (EGFP) gene.
- oligonucleotide Xho (5 cggcacctcgagcacgcggat: SEQ ID NO:
- the Xhol site was introduced using 1) to prepare pALHEX. At this time, the codon 195 of the normal HygEGFP gene did not affect the force S changing from Val to Glu and the quantification of the gene repair reaction.
- a PmaCI site serving as a gene marker was introduced into codon 34 of the normal HygEGFP gene using oligonucleotide Silent (5'-gcgaagaatcacgtgctttca-3 ': SEQ ID NO: 2) to prepare pALHEXP.
- an opal mutation was introduced into codon 34 of the normal HygEGFP gene using oligonucleotide Opal (5′-ggcgaagaatgacgtgctttc-3 ′: SEQ ID NO: 3) to pALHEXP to prepare pALHEXB.
- the previously introduced PmaCI site is removed, and a BmgBI site is introduced instead as a marker for the mutant HygEGFP gene.
- the phagemids pBSHES / AntiSense and pBSHES / Sense were prepared by introducing the Xhol fragment of pTENHES into the Xhol site of pBluescript II SK + (Stratagene).
- the Xhol fragment is inserted in the opposite direction to the p Bluescript II SK + fl ori, and the single-stranded circular DNA obtained from pBSHES / AntiSense and pBSHES / Sense is the normal type, respectively. It contains the antisense strand and the sense strand of the HygEGFP gene. Each insertion direction was confirmed by restriction enzymes Nael and PmaCI.
- the phagemid is introduced into E. coli strain JM105, cultured in 2 X YT medium (containing 50 ig / mL ampicillin (Amp)) and then transferred to 5 mL of 500 mL of 2 X YT medium (containing 50 ⁇ g / mL Amp). The cells were cultured at 37 ° C with vigorous stirring. After 1 hour, kanamycin was added to 25 ⁇ g / mL, and the culture was continued again. After 23 hours, phagemid was separated from E. coli by centrifugation (2.15 ⁇ 10 3 g, 15 minutes).
- the circular single-stranded DNA lpmol (l. l ⁇ g) obtained from pBSHES / Sense was digested with 5 U of Xhol, and the 606 ⁇ fragment was separated on a 3.5% low melting point agarose gel. Recovered by Rum extraction.
- an oligonucleotide S5 ⁇ — ccccctcgaggtgccg— 3: complementary to the 5 ′ and 3 ′ Xhol sites of pBSHES / Sense is used to make the double strand around the Xhol site.
- the recovered fragment was purified by gel filtration (NAP5 column, manufactured by Amersham Biosciences).
- SEQ ID NO: 8 shows the base sequence of the single-stranded DNA (fragment 1) comprising the sense sequence thus prepared.
- the base for introducing mutation into the target region (hereinafter referred to as “mutant introduction base”) is the 126th 128th base (tea) in SEQ ID NO: 8.
- Fragment 2 consisting of a base sequence complementary to the 5 ′ end portion of fragment 1 (SEQ ID NO: 9)
- Fragment 3 consisting of a base sequence complementary to the 3 ′ end portion of fragment 1 (SEQ ID NO: 10)
- fragment 6 SEQ ID NO: 16
- base sequence portion consisting of the 286 320th base in SEQ ID NO: 8
- Fragment 4 (SEQ ID NO: 11) containing a base sequence complementary to the 5 'end portion of fragment 1 and fragment 5 (SEQ ID NO: 12) containing a base sequence complementary to the 3' end portion of fragment 1 Made by chemical synthesis. Chemical synthesis was outsourced to Hokkaido System Science.
- Fragment 4 has the following formula:
- FD is ggcggctccggggatctcga (base sequence complementary to the base sequence at the 5 ′ end of fragment 1)
- FC is gc
- FB is gaaa
- FA is gc.
- the FA part can anneal to the FC part to form a hairpin structure.
- Fragment 5 has the following formula: 5 '-FA FB— FC— FD— 3'
- FA is gc
- FB is gaaa
- FC is gc
- FD is ggtgccggacttcggggca
- lOpmol fragment 1 10 times the amount (lOOpmol) of each fragment was mixed in 20 ⁇ L of TE buffer in consideration of annealing efficiency.
- the DNA was denatured by heating at 95 ° C for 5 minutes and then rapidly cooled in ice for 5 minutes. After further heating at 80 ° C for 5 minutes, it is gradually cooled.
- the cells cultured for 48 hours were trypsinized, washed with lmL PBS, and then collected by centrifugation. Suspend this in 100 / i L TEG (25 mM Tris-HCl, lOmM EDTA, 5 OmM Glc, pH 8.0), and after adding 200 ⁇ L 0.2N NaOH / 1% SDS, gently agitate And left at room temperature for 5 minutes. Add 150 ⁇ L of 8M AcONH and cool at 4 ° C for 15 minutes.
- Plasmid DNA was dissolved in 20 ⁇ L of water and stored at ⁇ 20 ° C. until use.
- the recovered plasmid DNA was introduced into Escherichia coli DH-5 strain using the electopore position method.
- Gene Pulser II manufactured by Bio-Rad laboratories
- C 1.8 kV, 25 ⁇ F, 200 ⁇ .
- the DH-5a strain was cultured in ImL SOC medium for 1 hour, diluted with LB medium supplemented with 50 ⁇ g / mL Amp, and cultured overnight. At this time, a part of the E.
- coli DH_5 ct strain was taken and seeded on LB agar medium, and the force S measured for the erect mouth position efficiency by the number of colonies, no significant difference was observed. The next day, the E. coli DH-5 ⁇ strain was recovered by centrifugation and resuspended in 100 ⁇ L of TEG. To this was added 200 x L of 0.2N NaOH / 1% SDS, and after gently stirring, 150 ⁇ l of this was added, and Sol III (3M potassium acetate, 11.5% acetic acid) was added, and left on ice for 5 minutes. The centrifuged supernatant was treated with phenol / chloroform (1/1), and plasmid DNA was recovered by ethanol precipitation.
- E. coli BL21 (DE3) strain using the electopore position method.
- transformation into E. coli BL21 (DE) was carried out by the same procedure as for E. coli DH-5 strain. After transformation, add ImL of SOC medium, incubate at 37 ° C for 1 hour, take 50 ⁇ L, and use ImL of LB medium containing 50 ⁇ g / mL Amp and 10 ⁇ M IPTG at 37 ° C. For 3 hours.
- HygO 50 ig / mL Amp, 10 / i M IPTG
- the configuration of pTENHEX is shown in FIG. 2, and the nucleotide sequence of the mutant HygEGFP gene contained in pTENHEX and the amino acid sequence encoded by it are shown in SEQ ID NO: 13.
- the base sequence consisting of the 1st to 36th bases in the base sequence shown in SEQ ID NO: 13 is the base sequence added when the mutant HygEGFP gene is introduced into pTENHEX, and the base sequence of the mutant HygEGFP gene is In fact, it starts with the 37th base.
- Codon 34 of normal HygEGFP gene is tea and coding for Ser Mutant HygEGFP gene codon 34 has a termination mutation (TGA) introduced, so the HygEGFP gene can be expressed normally. I can't.
- TGA termination mutation
- Figure 3 shows fragment 1 alone ("Tailed_Duplex 1" in the figure), nucleic acid construct S1 consisting of fragment 1 and fragment 2 annealed to fragment 1 ("Tailed-Duplex 2" in the figure), annealing to fragment 1 and fragment 1
- nucleic acid construct S2 fragment-Duplex 3 in the figure
- fragment 6 fragment-Duplex 6
- nucleic acid constructs Sl, S2 and S5 showed 1.3, 1.8 and 1.8 times higher repair efficiency than fragment 1 alone (repair efficiency of nucleic acid construct S1 2.6). %, Nucleic acid construct S2 repair efficiency 3.7%, nucleic acid construct S5 repair efficiency 3.7%). The repair efficiency of the nucleic acid constructs S2 and S5 was significantly higher than the repair efficiency of the nucleic acid construct S1.
- Fig. 4 shows fragment 1 alone ("Looped-Duplex 1" in the figure), nucleic acid construct S3 consisting of fragment 1 and fragment 4 annealed to fragment 1 ("Looped_Duplex 4" in the figure), and fragment 1 and fragment 1 shows the repair efficiency of the mutant HygEG FP gene contained in pTENHEX when the nucleic acid construct S4 consisting of fragment 5 annealed in 1 (“Looped_Duplex 5” in the figure) is used.
- nucleic acid constructs S3 and S4 showed a repair efficiency that was 1.4 times and 1.9 times higher than that of fragment 1 alone (repair efficiency of nucleic acid construct S3, 2.7%, nucleic acid construct, respectively). S4 repair efficiency 3.7%).
- nucleic acid construct S4 showed high repair efficiency although it was not significant, compared to the repair efficiency of the nucleic acid construct S3.
- Nucleic acid constructs S3 and S4, in which fragments 4 and 5 form a hairpin structure showed the same gene repair efficiency as nucleic acid constructs S1 and S2, which form a more stable 35-base pair duplex.
- nucleic acid analogs such as 2'-0_Me-RNA and PNA that are resistant to intracellular nucleases and can be efficiently annealed to DNA It can be expected that the efficiency of gene repair is further improved by using.
- the mutant HygEG FP gene was repaired by the conventional SFHR method using PCR products. As a result, the conversion efficiency was 0.16%.
- the PCR product was amplified using primer 1 (5-gagatccccggagccg-3: item K number ⁇ 4) and Huima 1 (o-gaggtgccggacttcgg ⁇ ⁇ ': SEQ ID NO: 15) and Taq polymerase (manufactured by Tokyobo).
- the 3 ′ end was blunted with Blunting High Kit (manufactured by Tokyobo) and purified by 3.5% low melting point agarose electrophoresis.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Genetics & Genomics (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- General Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Wood Science & Technology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Zoology (AREA)
- Molecular Biology (AREA)
- Medicinal Chemistry (AREA)
- Epidemiology (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Biophysics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plant Pathology (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biochemistry (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006548859A JP4883447B2 (ja) | 2004-12-13 | 2005-12-13 | 核酸構築物及びそれを利用した標的領域への変異導入方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-360632 | 2004-12-13 | ||
| JP2004360632 | 2004-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006064813A1 true WO2006064813A1 (ja) | 2006-06-22 |
Family
ID=36587868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/022890 Ceased WO2006064813A1 (ja) | 2004-12-13 | 2005-12-13 | 核酸構築物及びそれを利用した標的領域への変異導入方法 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4883447B2 (ja) |
| WO (1) | WO2006064813A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014500727A (ja) * | 2010-12-02 | 2014-01-16 | キージーン・エン・フェー | Dnaの標的改変 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005075657A1 (ja) * | 2004-02-10 | 2005-08-18 | Japan Science And Technology Agency | Dna配列の塩基変換方法 |
-
2005
- 2005-12-13 WO PCT/JP2005/022890 patent/WO2006064813A1/ja not_active Ceased
- 2005-12-13 JP JP2006548859A patent/JP4883447B2/ja not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005075657A1 (ja) * | 2004-02-10 | 2005-08-18 | Japan Science And Technology Agency | Dna配列の塩基変換方法 |
Non-Patent Citations (5)
| Title |
|---|
| LIANG L. ET AL.: "Optimizing the delivery systems of chimeric RNA.DNA oligonucleotides. Beyong general oligonucleotide transfer", EUR. J. BIOCHEM., vol. 269, 2002, pages 5753 - 5758, XP003000442 * |
| MAZIN A.V. ET AL.: "Tailed duplex DNA is the preferred substrate for Rad51 protein-mediated homologous pairing", EMBO J., vol. 19, no. 5, 2000, pages 1148 - 1156, XP003000441 * |
| TSUCHIYA H. ET AL.: "Increased SFHR gene correction efficiency with sense single-stranded DNA", J. GENE MED., vol. 7, no. 4, April 2005 (2005-04-01), pages 486 - 493, XP003000444 * |
| TSUCHIYA H. ET AL.: "Ipponsa DNA Danpen ni yoru Idenshi Shufuku Koritsu ni Eikyo o Ataeru Inshi", ANNUAL MEETING OF THE MOLECULAR BIOLOGY SCIENTY OF JAPAN KOEN YOSHISHU, vol. 28TH, 25 November 2005 (2005-11-25), pages 755, 3P-1146, XP003000443 * |
| TSUCHIYA H. ET AL.: "Phagemid Plasmid kara Chosei shita DNA Danpen ni yoru Idenshi Shufuku Koritsu no Kojo", ANNUAL MEETING OF THE MOLECULAR BIOLOGY SCIENTY OF JAPAN PROGRAM KOEN YOSHISHU, vol. 27TH, 25 November 2004 (2004-11-25), pages 884, 3PA-367, XP003000440 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014500727A (ja) * | 2010-12-02 | 2014-01-16 | キージーン・エン・フェー | Dnaの標的改変 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2006064813A1 (ja) | 2008-06-12 |
| JP4883447B2 (ja) | 2012-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US12371713B2 (en) | Method for producing DNA-edited eukaryotic cell, and kit used in the same | |
| CA2382120C (en) | Single-stranded oligodeoxynucleotide mutational vectors | |
| AU2003218382B2 (en) | Methods and compositions for using zinc finger endonucleases to enhance homologous recombination | |
| WO2021084533A1 (en) | Pam-reduced and pam-abolished cas derivatives compositions and uses thereof in genetic modulation | |
| JP2019122390A (ja) | 大型家畜の接合体における標的化ゲノム編集 | |
| EP3263708B1 (en) | Protein with recombinase activity for site-specific dna-recombination | |
| KR20190012229A (ko) | 유전자 조작을 위한 하이브리드 핵산 서열 | |
| WO2016080399A1 (ja) | 哺乳動物の標的ゲノム領域にdnaをノックインする方法及び細胞 | |
| WO2024235293A1 (zh) | 基于环状rna的引导编辑系统 | |
| Bharati et al. | Genome editing in animals: an overview | |
| US20050260585A1 (en) | Poison/antidote genetic systems for the selection of genetically modified eucaryote cells or organisms | |
| JP4883447B2 (ja) | 核酸構築物及びそれを利用した標的領域への変異導入方法 | |
| WO2025199358A1 (en) | Nuclease system for genome editing | |
| CN100540664C (zh) | 将突变转移到靶核酸中的方法 | |
| KR20180037602A (ko) | Park2 유전자 넉아웃 파킨슨 질환 모델용 돼지 및 이의 용도 | |
| WO2021171688A1 (ja) | 遺伝子ノックイン方法、遺伝子ノックイン細胞作製方法、遺伝子ノックイン細胞、がん化リスク評価方法、がん細胞製造方法、及びこれらに用いるためのキット | |
| JP4707561B2 (ja) | Dna配列の塩基変換方法 | |
| CN121628933A (zh) | 反向引导编辑系统 | |
| Chi et al. | Long range regulatory sequences delimited by progressive deletions of a mouse Nkx2-5-GFP-BAC clone: A new approach to identify distal gene regulators in evolutionarily conserved non-coding sequences | |
| WO2003104405A2 (en) | Methods for promoting homologous recombination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KN KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 2006548859 Country of ref document: JP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 05816730 Country of ref document: EP Kind code of ref document: A1 |