WO2019017713A2 - Ar 유전자 및 mtor 유전자의 발현을 동시에 억제하는 핵산 - Google Patents
Ar 유전자 및 mtor 유전자의 발현을 동시에 억제하는 핵산 Download PDFInfo
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Definitions
- the present invention relates to a nucleic acid molecule which simultaneously inhibits the expression of an AR gene and an mTOR gene, and a pharmaceutical composition for anticancer comprising the same.
- Cancer is one of the most deadly diseases worldwide, and the development of innovative cancer treatments can create high added value while reducing the cost of medical care. According to statistics in 2008, the molecular therapy products that can overcome the existing anticancer drug resistance amounted to $ 17.5 billion in seven major countries (US, Japan, France, Germany, Italy, Spain and UK) It is estimated that the market size of $ 45 billion will grow by 9.5% compared to 2008.
- the treatment of cancer is divided into surgery, radiotherapy, chemotherapy, and biological treatment. Among them, chemotherapy is a chemical substance that suppresses or kills the cancer cell proliferation.
- RNA interference acts on sequence-specific mRNAs in a wide variety of mammalian cells since its discovery (Silence of the transcripts: RNA interference in medicine. J Mol Med (2005) 83: 764773).
- RNAi is a small interfering RNA (hereinafter referred to as " siRNA ”) with a small interfering ribonucleic acid double-stranded structure with a size of 21-25 nucleotides that specifically binds to a mRNA transcript having a complementary sequence And the expression of a specific protein is inhibited by decomposing the transcript.
- siRNA small interfering RNA
- RNA double strand is processed by endonuclease Dicer and converted into siRNA of 21-23 base pairs (bp), and the siRNA is bound to RNA-induced silencing complex (RISC) (Antisense) strand recognizes and degrades the target mRNA, thereby specifically inhibiting the expression of the target gene in a sequence-specific manner (NUCLEIC-ACID THERAPEUTICS: BASIC PRINCIPLES AND RECENT APPLICATIONS, Nature Reviews Drug Discovery 2002. 1, 503 -514).
- RISC RNA-induced silencing complex
- siRNAs against the same target gene are superior to the antisense oligonucleotide (ASO) in inhibiting mRNA expression in vivo / in vitro (in vitro and in vivo) (Comparison of antisense oligonucleotides and siRNAs in cell culture and in vivo. Biochem. Biophys. Res. Commun. 2002. 296: 1000-1004).
- ASO antisense oligonucleotide
- siRNA-based RNAi technology-based therapeutics has been analyzed by the global market size to be more than KRW 12 trillion by 2020, and the number of targets to which the technology can be applied has been dramatically expanded to include existing antibodies and compound-based drugs It is being evaluated as a next-generation gene therapy technology that can treat diseases that are difficult to treat.
- siRNA since the action mechanism of siRNA is complementary to the target mRNA and regulates the expression of the target gene in a sequence-specific manner, it has been known for a long time until the existing antibody-based drug or small molecule drug is optimized for a specific protein target The development period and the development cost of the protein can be significantly extended and the development period can be shortened so that the optimized lead compound can be developed for all the protein targets including the target substance which can not be medicated (Progress Towards in Vivo Use of siRNAs. MOLECULAR THERAPY 2006 13 (4): 664-670).
- siRNA therapeutic agents have the advantage of being able to predict side effects due to their clear targets, unlike conventional anticancer agents.
- these target specificities are not as effective in treating tumors that are diseases caused by various gene problems, It is also a cause.
- the androgen receptor is a type of nuclear receptor that is activated by binding either the androgen hormone, testosterone or dihydrootestosterone to the cytoplasm and then translocating to the nucleus (International Union of Pharmacology. LXV. The pharmacology and classification of 58 (4): 782-97).
- the main function is the DNA-binding transcription factor that regulates gene expression (Biological actions of androgens. Endocrine Reviews 8 (1): 1-28.).
- the androgen receptor is modified by post-translational modification through acetylation, which is known to directly promote AR-mediated transactivation, apoptosis, and contact independent growth of prostate cancer cells (Acetylation 23 (23): 8563-75), an inhibitor targeting the N-terminal domain of a protein is under development, believed to be important for the therapeutic target of prostate cancer .
- mTOR mimmalian Target of Rapamycin
- IL-2 interleukin-2
- mTOR is an important factor for autophagy control, and it targets mTOR which regulates autophosphorylation pathway to target various diseases such as cancer, neurodegenerative disease, heart disease, aging, Diseases, etc. (Immunology, 7: 767-777; Nature 451: 1069-1075, 2008).
- siRNA and shRNA which simultaneously suppress the expression of the AR gene and the mTOR gene were prepared and its anticancer activity and synergistic anticancer activity with the anticancer drug And to utilize cancer prevention and treatment effectively.
- the present invention provides a nucleic acid molecule that simultaneously inhibits the expression of AR gene and mTOR gene.
- the present invention also provides a recombinant expression vector comprising the nucleic acid molecule.
- the present invention provides a transformed cell into which said recombinant expression vector has been introduced.
- the present invention provides a pharmaceutical composition for anticancer comprising the nucleic acid molecule as an active ingredient.
- the present invention also provides a method of preventing and treating cancer, comprising administering a pharmaceutically effective amount of the nucleic acid molecule to a subject.
- the present invention relates to a nucleic acid molecule that simultaneously inhibits expression of an AR gene and an mTOR gene.
- the double-stranded siRNA and shRNA of the present invention are designed to simultaneously inhibit the expression of an AR gene and a mTOR gene associated with cancer.
- the double-stranded siRNA and shRNA of the present invention promotes the killing of cancer cells and synergistically enhances cancer cell death in combination with an anticancer agent, so that various types of cancer can be effectively prevented and treated.
- Figure 1 is a map of a vector for expressing shRNAs comprising the dual target siRNA set 1 of the invention in a cell.
- FIG. 2A shows the effect of inhibiting the expression of the AR gene and the mTOR gene by the double-target siRNA set 1 of the present invention in h460 cell line (NC is a control siRNA, siAR is siRNA for AR, simTOR is siRNA for mTOR si -AT1 is the AR and mTOR dual target siRNA set of the invention 1).
- FIG. 2B shows the inhibitory effect of the double-target siRNA set 1 of the present invention on the expression of the AR gene and the mTOR gene in the pc3 cell line (NC is a control siRNA, siAR is siRNA for AR, simTOR is siRNA for mTOR, si -AT1 is the AR and mTOR dual target siRNA set of the invention 1).
- FIG. 4A is a graph showing the cancer cell killing effect by the combination treatment of the anti-cancer agent of the dual target siRNA set 1 in the DU145 cell line (NC is the control group siRNA, no treat is the group not treated with anticancer agent, si-AT1 is the AR and mTOR dual target siRNA set 1).
- FIG. 4B is a graph showing the effect of the combination treatment of the anti-cancer agent of the double-target siRNA set 1 on the H460 cell line (NC is a control group siRNA, no treat is a group not treated with an anticancer agent, si- mTOR dual target siRNA set 1).
- the invention relates to nucleic acid molecules that simultaneously inhibit the expression of AR and mTOR genes.
- the nucleic acid molecule is selected from the group consisting of SEQ ID NOS: 1 and 2; SEQ ID NOS: 3 and 4; SEQ ID NOS: 5 and 6; SEQ ID NOS: 7 and 8; SEQ ID NOS: 9 and 10; SEQ ID NOS: 11 and 12; SEQ ID NOS: 13 and 14; SEQ ID NOS: 15 and 16; SEQ ID NOS: 17 and 18; SEQ ID NOS: 19 and 20; SEQ ID NOS: 21 and 22; SEQ ID NOS: 23 and 24; And at least 80% of sequence homology with at least one base sequence selected from the group consisting of SEQ ID NOS: 25 and 26.
- sequence identity is 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94% %, 97%, 98%, 99% or 100%.
- a nucleic acid molecule comprising a nucleotide sequence as set forth in SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 or 25, Can be suppressed.
- the nucleic acid molecule comprising the nucleotide sequence represented by SEQ ID NO: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 or 26 suppresses the expression of mTOR gene by RNA interference
- the nucleic acid molecule of the present invention can simultaneously inhibit the expression of the AR gene and the mTOR gene.
- the nucleic acid molecule has a sequence selected from the group consisting of SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5 and SEQ ID NO: 6, SEQ ID NO: SEQ ID NO: 11 is SEQ ID NO: 12, SEQ ID NO: 13 is SEQ ID NO: 14, SEQ ID NO: 15 is SEQ ID NO: 16, SEQ ID NO: 17 is SEQ ID NO: 18, SEQ ID NO: SEQ ID NO: 22 is SEQ ID NO: 23, SEQ ID NO: 24 is SEQ ID NO: 25, and double strand siRNA is partially complementary to SEQ ID NO: 26.
- dual target siRNA sets 1-13 were prepared.
- the 20-mer siRNA set 1 consisting of SEQ ID NOS: 1 and 2 is complementary to 18-mer
- the 19-mer siRNA set 2 consisting of SEQ ID NOS: 3 and 4 is complementary to 17mer
- the siRNA set 3 of the siRNA set 3 of Complement 17 of the siRNA set 4 of SEQ ID NOs: 7 and 8 is complementary to that of the siRNA set 4 of the siRNA set 3 of SEQ ID NOs: 9 and 10
- the 18-mer siRNA set 6 consisting of the numbers 11 and 12 is complementary to the 14mer
- the 17mer siRNA set 7 consisting of SEQ ID NOS: 13 and 14 is complementary to the 13mer
- the 23-mer siRNA set 8 consisting of SEQ ID NOS: 15 and 16 19 mer were complementary to each other
- siRNA (Antisense AR) of SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 or 25 can complementarily bind to the mRNA of AR.
- siRNA (Antisense mTOR) of SEQ ID NO: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 or 26 can complementally bind mRNA of mTOR.
- the dual target siRNA sets 1-13 of the present invention can simultaneously reduce the expression of AR and mTOR genes.
- the nucleic acid molecule may be a short hairpin RNA (shRNA) comprising the nucleotide sequence of SEQ ID NO: 1 and the nucleotide sequence of SEQ ID NO: 2, wherein the shRNA comprises the nucleotide sequence of SEQ ID NO: 29 or SEQ ID NO: Or more sequence identity.
- shRNA short hairpin RNA
- sequence identity is 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94% %, 97%, 98%, 99% or 100%.
- the shRNA may form a hairpin structure by partially complementary binding of the nucleotide sequence of SEQ ID NO: 1 with the nucleotide sequence of SEQ ID NO: 2, and by a loop region to form a hairpin structure.
- TTCAAGAGAG loop shRNA SEQ ID NO: 29
- TTGGATCCAA loop shRNA SEQ ID NO: 30
- the siRNA targeting AR and mTOR may have a sequence complementary to a part of the AR gene or mTOR gene of human ( Homo sapiens ), and may decompose or inhibit translation of the mRNA of the AR gene or mTOR gene.
- inhibition of expression refers to causing expression of a target gene (to mRNA) or degradation of translation (to a protein), and preferably means that the expression of the target gene is undetectable or insignificant As shown in FIG.
- siRNA small interfering RNA
- siRNAi RNA interference
- the siRNA is composed of a sense RNA strand having a sequence homologous to the mRNA of the target gene and an antisense RNA strand having a sequence complementary thereto.
- the sense RNA strand is represented by SEQ ID NOS: 1, 3,
- the antisense RNA strand is an siRNA (antisense strand to the AR gene) consisting of the nucleotide sequence of SEQ ID NOs: 2, 3, 7, 9, 11, 13, 15, 17, 19, 21, 23, (Antisense strand to the mTOR gene) consisting of the nucleotide sequences of SEQ ID NOs: 12, 14, 16, 18, 20, 22, 24 or 26. Therefore, the dual target siRNA sets 1-13 simultaneously express the AR gene and the mTOR gene Or as an efficient gene knock-down method or as a method of gene therapy.
- the nucleic acid molecule of the present invention can be used for the deletion, substitution, or insertion of a functional group of a nucleic acid molecule constituting it, for example, a partial sequence of a nucleic acid molecule that simultaneously inhibits the expression of an AR gene and an mTOR gene insertion of a nucleic acid molecule but variants capable of functionally equivalent to the nucleic acid molecule.
- the gene includes a nucleotide sequence having a sequence homology of 70% or more, more preferably 80% or more, still more preferably 90% or more, and most preferably 95% or more, with the nucleotide sequence of SEQ ID NO: can do.
- &Quot;% of sequence homology to polynucleotides is ascertained by comparing the comparison region with two optimally aligned sequences, and a portion of the polynucleotide sequence in the comparison region is the reference sequence for the optimal alignment of the two sequences (I. E., A gap) relative to the < / RTI >
- the invention relates to a recombinant expression vector comprising a nucleic acid molecule of the invention.
- vector refers to a plasmid vector as a means for expressing a gene of interest in a host cell; Phagemid vector; Cosmeptide vector; And viral vectors such as bacteriophage vectors, adenovirus vectors, retroviral vectors, and adeno-associated viral vectors, and are preferably, but not limited to, adenoviral vectors.
- the vector of the present invention can typically be constructed as a vector for cloning or as a vector for expression.
- the vector of the present invention can be constructed by using prokaryotic cells or eukaryotic cells as hosts.
- a strong promoter capable of promoting transcription such as a tac promoter, lac promoter, lacUV5 promoter, lpp promoter, pL ⁇ promoter, pR ⁇ promoter, rac5 promoter, amp promoter, recA promoter, SP6 promoter, trp promoter, and T7 promoter
- a strong promoter capable of promoting transcription such as a tac promoter, lac promoter, lacUV5 promoter, lpp promoter, pL ⁇ promoter, pR ⁇ promoter, rac5 promoter, amp promoter, recA promoter, SP6 promoter, trp promoter, and T7 promoter
- a ribosome binding site for initiation of detoxification such as a tac promoter, lac promoter, lacUV5
- E. coli tryptophan biosynthetic pathway (Yanofsky, C. (1984), J. Bacteriol., 158: 1018-8), when E. coli (e.g. HB101, BL21, 1024) and the phage leftward promoter (pL? Promoter, Herskowitz, I. and Hagen, D. (1980), Ann. Rev. Genet., 14: 399-445).
- the vectors that can be used in the present invention include plasmids such as pSC101, pGV1106, pACYC177, ColE1, pKT230, pME290, pBR322, pUC8 / 9, pUC6, pBD9, pHC79, pIJ61, pLAFR1, , pGEX series, pET series, and pUC19), phagemid (e.g., pComb3X), phage (M13, etc.) or viruses (e.g., SV40).
- plasmids such as pSC101, pGV1106, pACYC177, ColE1, pKT230, pME290, pBR322, pUC8 / 9, pUC6, pBD9, pHC79, pIJ61, pLAFR1, , pGEX series, pET series, and pUC19
- phagemid e.g., pComb3X
- the vector of the present invention is an expression vector and a eukaryotic cell is used as a host
- a promoter derived from a genome of a mammalian cell for example, a metallothionein promoter
- a mammalian virus Virus late promoter for example, vaccinia virus 7.5K promoter, SV40 promoter, cytomegalovirus promoter and HSV promoter
- the vector of the present invention may be fused with other sequences as necessary in order to facilitate protein purification of the amino acid, and the fused sequence includes, for example, glutathione S-transferase (Pharmacia, USA), maltose binding protein (NEB, USA), FLAG (IBI, USA) and 6x His (hexahistidine; Quiagen, USA).
- the expression vector of the present invention may include an antibiotic resistance gene commonly used in the art as a selection marker. Examples of the expression vector include ampicillin, gentamycin, carbenicillin, chloramphenicol, streptomycin, kanamycin, , Neomycin, and tetracycline.
- the recombinant expression vector of the present invention may comprise an siRNA comprising the nucleotide sequence of SEQ ID NO: 1 and an siRNA comprising the nucleotide sequence of SEQ ID NO: 2, and an shRNA comprising the nucleotide sequence of SEQ ID NO: 29 or And a shRNA comprising the nucleotide sequence of the nucleotide sequence of SEQ ID NO: 30.
- the recombinant vector of the present invention can be prepared by a recombinant DNA method known in the art, and in one embodiment, a pE3.1 vector was used.
- Non-viral vectors useful for delivering siRNA for AR and mTOR in the present invention include all vectors commonly used in gene therapy, for example, various plasmids and liposomes that can be expressed in eukaryotic cells.
- an shRNA comprising the siRNA, in particular, a nucleotide sequence of SEQ ID NO: 29 or an siRNA comprising a nucleotide sequence of SEQ ID NO: 30, Preferably, it is operatively connected.
- Any promoter capable of functioning in eukaryotic cells may be used as the promoter, and the U7 promoter described in SEQ ID NO: 31 is more preferable.
- Additional control sequences including leader sequences, polyadenylation sequences, promoters, enhancers, upstream activation sequences, signal peptide sequences and transcription termination factors, as necessary for efficient transcription of double-stranded siRNAs or shRNAs targeting AR and mTOR .
- Viral or viral vectors useful for delivering siRNA or shRNA to AR and mTOR in the present invention include baculoviridiae, parvoviridiae, picornoviridiae, (herepesviridiae), poxviridiae, adenoviridiae, and the like.
- the present invention relates to a pharmaceutical composition for anticancer therapy comprising the nucleic acid molecule of the present invention as an active ingredient.
- the anticancer pharmaceutical composition of the present invention may further comprise an anticancer agent, wherein the anticancer agent is selected from the group consisting of acibysein, aclarubicin, accordingazole, acornisine, adozelesin, Aminoglutethimide, amaranthin, ampicillin, androgens, anginidine, ampicillin glycinate, asalay, asparaginase, 5- But are not limited to, azacytidine, azathioprine, Bacillus calmette-guerine (BCG), baker's antipol, beta-2-dioxythioguanosine, bisanthrene HCl, bleomycin sulfate, , BWA 773U82, BW 502U83 / HCl, BW 7U85 mesylate, cerasemide, carbethimide, carboline, carmustine, chlorambucil, chloroquinoxaline-sulphonamide, chloro
- the cancer is selected from the group consisting of: colorectal cancer, breast cancer, cervical cancer, cervical cancer, ovarian cancer, prostate cancer, brain tumor, head and neck carcinoma, melanoma, myeloma, leukemia, lymphoma, stomach cancer, pancreatic cancer, Renal cell carcinoma, kidney cell carcinoma, renal pelvic carcinoma, bone cancer, skin cancer, head cancer, endometrial carcinoma, endometrial carcinoma, vulvar carcinoma, Hodgkin's disease, bladder cancer, kidney cancer, Cancer of the central nervous system (CNS), primary CNS lymphoma, spinal cord tumor, cervical cancer, endometrial carcinoma, endometrial carcinoma, thyroid cancer, parathyroid cancer, adrenal cancer, soft tissue sarcoma, Polymorphic glioblastoma, and pituitary adenoma.
- the prostate cancer or lung cancer is a prostate cancer or a lung cancer.
- the kind of cancer that can use the double target siRNA set of the present invention is not limited there
- treatment refers to any action that improves or alters the death or cancer of a cancer cell by administering a composition comprising the nucleic acid of the present invention.
- the pharmaceutical composition may be one or more formulations selected from the group comprising oral formulations, external preparations, suppositories, sterile injectable solutions and sprays.
- the therapeutically effective amount of the composition of the present invention may vary depending on a variety of factors, such as the method of administration, the site of administration, the condition of the patient, and the like. Therefore, when used in the human body, the dosage should be determined in consideration of safety and efficacy. It is also possible to estimate the amount used in humans from the effective amount determined through animal experiments. Such considerations in determining the effective amount are described, for example, in Hardman and Limbird, eds., Goodman and Gilman ' s Pharmacological Basis of Therapeutics, 10th ed. (2001), Pergamon Press; And E.W. Martin ed., Remington ' s Pharmaceutical Sciences, 18th ed. (1990), Mack Publishing Co.
- compositions of the present invention may also include carriers, diluents, excipients, or a combination of two or more thereof commonly used in biological formulations.
- the pharmaceutically acceptable carrier is not particularly limited as long as the composition is suitable for in vivo delivery, for example, Merck Index, 13th ed., Merck & Inc.
- a buffered saline solution, a buffer solution, a dextrose solution, a maltodextrin solution, glycerol, ethanol, and one or more of these components may be mixed and used, and if necessary, an antioxidant, a buffer, Conventional additives may be added.
- diluents such as aqueous solutions, suspensions, emulsions, etc., pills, capsules, granules or tablets.
- main dosage forms such as aqueous solutions, suspensions, emulsions, etc., pills, capsules, granules or tablets.
- it can be suitably formulated according to each disease or ingredient, using the method disclosed in Remington's Pharmaceutical Science (Mack Publishing Company, Easton PA, 18th, 1990) in a suitable manner in the art.
- composition of the present invention may further contain one or more active ingredients showing the same or similar functions.
- the composition of the present invention contains 0.0001 to 10% by weight, preferably 0.001 to 1% by weight of the protein, based on the total weight of the composition.
- the pharmaceutical composition of the present invention may further include a pharmaceutically acceptable additive, wherein the pharmaceutically acceptable additives include starch, gelatinized starch, microcrystalline cellulose, lactose, povidone, colloidal silicon dioxide, calcium hydrogen phosphate, Wherein the starch is selected from the group consisting of lactose, mannitol, sugar, arabic gum, pregelatinized starch, cornstarch, powdered cellulose, hydroxypropyl cellulose, opaques, sodium starch glycolate, carnauba wax, synthetic aluminum silicate, stearic acid, magnesium stearate, Calcium, white sugar, dextrose, sorbitol and talc may be used.
- the pharmaceutically acceptable additives according to the present invention are preferably included in the composition in an amount of 0.1 to 90 parts by weight, but are not limited thereto.
- composition of the present invention may be administered orally or non-orally (for example, intravenously, subcutaneously, intraperitoneally or topically) or orally administered in accordance with a desired method, and the dose may be appropriately determined depending on the patient's body weight, The range varies depending on diet, time of administration, method of administration, excretion rate, and severity of the disease.
- the daily dose of the composition according to the present invention is 0.0001 to 10 mg / ml, preferably 0.0001 to 5 mg / ml, more preferably administered once to several times a day.
- liquid preparation for oral administration of the composition of the present invention examples include suspensions, solutions, emulsions, syrups, and the like.
- various excipients such as wetting agents, sweeteners, Etc. may be included together.
- Formulations for parenteral administration include sterile aqueous solutions, non-aqueous solvents, suspensions, emulsions, freeze-dried preparations, suppositories, and the like.
- the pharmaceutical composition of the present invention can be used for preventing or treating cancer and its complications, and can also be used as an anti-cancer adjuvant.
- the present invention also provides a method of preventing and treating cancer, comprising administering a pharmaceutically effective amount of the nucleic acid molecule to a subject.
- compositions of the present invention are administered in therapeutically effective amounts or in pharmaceutically effective amounts.
- pharmaceutically effective amount means an amount sufficient to treat a disease at a reasonable benefit / risk ratio applicable to medical treatment and the effective dose level will depend on the species and severity, age, sex, The time of administration, the route of administration and the rate of excretion, the duration of the treatment, factors including co-administered drugs, and other factors well known in the medical arts.
- a set of double-stranded siRNAs (double strand) capable of simultaneously inhibiting both AR (androgen receptor) and mTOR (mammalian target of rapamycin) was prepared from the sequence shown in Table 1 (Bioneer, Daejeon, Korea).
- the 20mer siRNA set 1 consisting of SEQ ID NOS: 1 and 2 is complementary to 18mer.
- the 19mer siRNA set 2 consisting of SEQ ID NOS: 3 and 4 is complementary to the 17mer.
- the 18-mer siRNA set 3 of SEQ ID NOS: 5 and 6 is complementary to the 16mer.
- the 17mer siRNA set 4 consisting of SEQ ID NOS: 7 and 8 is complementary to the 15mer.
- the 19-mer siRNA set 5 of SEQ ID NOS: 9 and 10 is complementary to the 15mer.
- the 18-mer siRNA set 6 consisting of SEQ ID NOs: 11 and 12 is complementary to the 14mer.
- the 17mer siRNA set 7 consisting of SEQ ID NOS: 13 and 14 is complementary to the 13mer.
- the 23-mer siRNA set 8 consisting of SEQ ID NOs: 15 and 16 is complementary to the 19mer.
- the 22mer siRNA set 9 consisting of SEQ ID NOS: 17 and 18 is complementary to the 18mer.
- the 22mer siRNA set 10 consisting of SEQ ID NOS: 19 and 20 is complementary to the 18mer.
- the 21mer siRNA set 11 consisting of SEQ ID NOS: 21 and 22 is complementary to the 17mer.
- the 20mer siRNA set 12 consisting of SEQ ID NOS: 23 and 24 is complementary to the 16mer.
- the 21mer siRNA set 13 consisting of SEQ ID NOS: 25 and 26 is complementary to the 17mer.
- siRNA (Antisense AR) of SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 or 25 complementarily binds to AR mRNA.
- An siRNA (Antisense mTOR) of SEQ ID NOS: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 or 26 complementarily binds mRNA of mTOR.
- the siRNA sets 1-13 of the present invention simultaneously reduce the expression of the AR and mTOR genes.
- the DNA conversion sequence (SEQ ID NOs: 27 and 28) of the double target siRNA set 1 (si-AT1) and the shRNA (TTCAAGAGAG loop shRNA and TTGGATCCAA loop shRNA) (Table 2).
- the constructed shRNAs were each placed so as to come after the U7 promoter (SEQ ID NO: 31) at the cleavage sites of the restriction enzymes Pst I and Eco RV of the pE3.1 vector (FIG. 1), to contain the double target siRNA targeting AR and mTOR
- a recombinant expression vector capable of expressing two species of shRNA in the cell was prepared.
- siRNA set 1 (si-AT1)
- PC3 cell line and h460 cell line were dispensed in a 12-well plate, and the cells were cultured in RPMI medium (Hyclone) supplemented with 10% FBS (Hyclone) at 37 ° C under 5% CO 2 until the cell confluent reached 50% Lt; / RTI > Subsequently, the double-target siRNA set 1 (si-AT1) prepared in Example 1 was added to 3 ⁇ l of lipofectamine 3000 (Invitrogen, Carlsbad, CA, USA ) To downsize AR and mTOR simultaneously. In addition, siRNA for AR and siRNA for mTOR described in Table 3 below were each transfected as a positive control for this.
- RNA and mTOR mRNAs of each siRNA and the double-target siRNA set 1 were confirmed.
- siRNA and mTOR mRNAs of each siRNA and the double-target siRNA set 1 were converted into cDNA using the primer set of Table 4 and the reaction mixture of Table 5 below.
- qPCR was performed under the conditions shown in Table 8 by preparing a reaction mixture with the composition shown in the following Table 7 using the reverse transcribed cDNA as a template.
- the probes used were AR (Thermo, Hs00171172_m1), mTOR (Thermo, Hs00234508_m1), GAPDH (Thermo, Hs02786624_g1) and QS3 equipment. All reactions were repeated three times and their mean values were taken. The results were normalized to the mRNA values of the housekeeping gene GAPDH.
- the expression of both AR and mTOR was decreased by the double-target siRNA set 1 (si-AT1) of the present invention in both PC3 and h460 cell lines, and the degree of reduction was similar or superior to that of each siRNA appear.
- the double-target siRNA of the present invention can simultaneously suppress the expression of both genes (FIGS. 2A and 2B).
- DU145 cell line and H460 cell line were cultured in 6-well plates, respectively.
- 50 uM cisplatin, 20 uM etoposide or 1 uM Taxol was treated And incubated for 16 hours.
- cells were treated with 5 mg / mL MTT (Promega, Ltd.) and incubated for 4 hours.
- the medium was removed and treated with 150 sol of solubilization solution and stop solution, And incubated for 4 hours.
- the absorbance of the reaction solution was measured at 570 nm and the cell viability was calculated using the following equation.
- the double-target siRNA of the present invention induces apoptosis alone (anti-cancer agent no treat group) and the double-target siRNA of the present invention even in the cisplatin-treated group which does not exhibit the apoptosis effect to the prostate cancer cell line DU145 cell line Resulting in apoptosis.
- the dual target siRNA set 1 (si-AT1) of the present invention was also used for etoposide and taxol showing a slight anticancer activity, thereby remarkably improving DU145 cell death (Fig. 4A).
- the double-target siRNA of the present invention showed cell killing effect on H460, a lung cancer cell line, and exhibited remarkable anticancer activity when combined with ethofoside and taxol (Fig. 4B) .
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Abstract
Description
Claims (13)
- AR(androgen receptor) 유전자 및 mTOR(mammalian target of rapamycin) 유전자의 발현을 동시에 억제하는 핵산 분자.
- 제1항에 있어서, 상기 핵산 분자는 서열번호 1 및 2; 서열번호 3 및 4; 서열번호 5 및 6; 서열번호 7 및 8; 서열번호 9 및 10; 서열번호 11 및 12; 서열번호 13 및 14; 서열번호 15 및 16; 서열번호 17 및 18; 서열번호 19 및 20; 서열번호 21 및 22; 서열번호 23 및 24; 및 서열번호 25 및 26으로 이루어진 군에서 선택된 1종 이상의 염기서열과 80% 이상의 서열 상동성을 갖는 서열인 것을 특징으로 하는, 핵산 분자.
- 제2항에 있어서, 서열번호 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 또는 25로 표시되는 염기서열을 포함하는 핵산 분자는 RNA 간섭에 의해 AR 유전자 발현을 억제하는 것을 특징으로 하는, 핵산 분자.
- 제2항에 있어서, 서열번호 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 또는 26로 표시되는 염기서열을 포함하는 핵산 분자는 RNA 간섭에 의해 mTOR 유전자의 발현을 억제하는 것을 특징으로 하는, 핵산 분자.
- 제2항에 있어서, 상기 서열번호 1은 서열번호 2와, 서열번호 3은 서열번호 4와, 서열번호 5는 서열번호 6과, 서열번호 7은 서열번호 8과, 서열번호 9는 서열번호 10과, 서열번호 11은 서열번호 12와, 서열번호 13은 서열번호 14와, 서열번호 15는 서열번호 16과, 서열번호 17은 서열번호 18과, 서열번호 19는 서열번호 20과, 서열번호 21는 서열번호 22와, 서열번호 23은 서열번호 24와, 서열번호 25는 서열번호 26과 부분적으로 상보적 결합을 이루고 있는 이중 가닥(double strand) siRNA인 것을 특징으로 하는, 핵산 분자.
- 제2항에 있어서, 서열번호 1의 염기서열과 서열번호 2의 염기서열이 부분적으로 상보적 결합하여 헤어핀 구조를 이루는 것을 특징으로 하는, 핵산 분자.
- 제2항에 있어서, 서열번호 1의 염기서열 및 서열번호 2의 염기서열을 포함하는 shRNA(short hairpin RNA)인 것을 특징으로 하는, 핵산 분자.
- 제7항에 있어서, shRNA는 서열번호 29 또는 서열번호 30의 염기서열과 80% 이상의 서열 상동성을 갖는 서열인 것을 특징으로 하는, 핵산 분자.
- 제1항의 핵산 분자를 포함하는 재조합 발현 벡터.
- 제9항의 재조합 발현 벡터가 도입된 형질전환된 세포.
- 제1항의 핵산 분자를 유효성분으로 포함하는, 항암용 약학적 조성물.
- 제11항에 있어서, 항암제를 추가로 포함하는 것을 특징으로 하는, 항암용 약학적 조성물.
- 약학적으로 유효한 양의 제1항의 핵산분자를 개체에 투여하는 단계를 포함하는 암의 예방 및 치료방법.
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US16/631,995 US10947542B2 (en) | 2017-07-20 | 2018-07-19 | Nucleic acid simultaneously inhibiting expression of AR gene and mTOR gene |
AU2018303104A AU2018303104B2 (en) | 2017-07-20 | 2018-07-19 | Nucleic acid simultaneously inhibiting expression of AR gene and mTOR gene |
JP2020502965A JP6944584B2 (ja) | 2017-07-20 | 2018-07-19 | AR遺伝子及びmTOR遺伝子の発現を同時に抑制する核酸 |
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