WO2018048046A2 - mTOR 저해제를 함유하는 황반변성 치료용 의약조성물 - Google Patents
mTOR 저해제를 함유하는 황반변성 치료용 의약조성물 Download PDFInfo
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- WO2018048046A2 WO2018048046A2 PCT/KR2017/002943 KR2017002943W WO2018048046A2 WO 2018048046 A2 WO2018048046 A2 WO 2018048046A2 KR 2017002943 W KR2017002943 W KR 2017002943W WO 2018048046 A2 WO2018048046 A2 WO 2018048046A2
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- the present invention relates to a pharmaceutical composition for treating macular degeneration, and more particularly, to a pharmaceutical composition for treating macular degeneration containing an inhibitor that inhibits the expression of the mTOR gene.
- Age-Related Macular Degeneration has become the most important disease that causes blindness in people over 65 years of age in developed countries. This disease is associated with a decline in the function and age of Retinal Pigment Epithelium (RPE), which plays a critical role in maintaining homeostasis and physiological function of the retina, which plays a key role in visual function in all types of animals. Atrophy caused by atrophy is known to be the most important cause, and abnormal changes due to age-related changes of Bruch's Membrane, which serves as the basement membrane of RPE, and are located on the outermost side of RPE and neural retina. The degeneration of choriocapillaris, which plays a role of supplying nutrients and oxygen to photoreceptor cells in which) occurs.
- RPE Retinal Pigment Epithelium
- the age-related macular degeneration can be classified into two types according to the phenotype resulting from such changes.
- Choroidal membranes in dry AMD and dry AMD are characterized by degeneration of RPE, Bruch's membrane, and Choriocapillaris. It is classified as wet AMD, accompanied by Choroidal neovascularization (CNV).
- Dry AMD is characterized by the development of drusen, the accumulation of complementary and apolipoprotein proteins between RPE and choriocapillaries, presumably their presence impeding the transport of oxygen and nutrients in the choriocapillaries.
- drusen itself reflects the deterioration of RPE cells, which in turn leads to the lack of oxygen, obstruction of mass transfer, and the occurrence of inflammation, which in turn leads to the death of RPE cells.
- G geographic atrophy
- Wet AMD occurs in 5-10% of dry AMD patients and, unlike dry AMD, where vision deterioration occurs over a period of years or decades to twenty years, blindness occurs within months if not treated. It shows an acute phenotype that can result.
- widespread oxygen partial pressure and nutrient depletion across the subretinal and subRPE spaces, i.e., tissue ischemia and the accompanying inflammatory response play an important role.
- the complement system which plays an important role in oxidative stress and immunological mechanisms, also acts, causing choroidal neovascularization (CNV) to characteristically occur in the subretinal space or subretinal pigment epithelial space. This results in serous leakage and bleeding.
- CNV choroidal neovascularization
- Choroidal neovascularization is known to occur in endothelial cells, RPE cells, and inflammatory cells such as monocytes and macrophages. Treatment for Wet AMD has reduced blindness in many patients with the use of anti-VEGF antibodies that began around 2005. This is because VEGF plays a major role in the development of choroidal neovascularization.
- the use of anti-VEGF antibodies does not completely inhibit the formation and growth of choroidal neovascularization.
- photoreceptor cells in the central and central areas of the retina where choroidal neovascularization occurs develop disruption of underlying RPE tissue. Eventually, after several years, the function will be lost.
- the anti-VEGF antibody acts only on the endothelial cells on the surface of the neovascularized blood vessels, so the size of the neovascularized blood vessels continues to increase without decreasing.
- mTOR mimmalian target of rapamycin
- the present inventors have diligently tried to develop a new mechanism of drug development target that is not expected to be effective by anti-VEGF antibody in treating macular degeneration.
- the present inventors have treated mTOR inhibitors in a laser-induced choroidal neovascular macular degeneration model. In this case, it was confirmed that the lesion size of the macular degeneration was reduced, thereby completing the present invention.
- An object of the present invention to provide a pharmaceutical composition for treating macular degeneration having a novel mechanism of drug mechanism target.
- the present invention provides a pharmaceutical composition for treating or preventing macular degeneration containing an siRNA represented by the nucleotide sequence of SEQ ID NO: 1.
- the present invention also provides a pharmaceutical composition for treating or preventing macular degeneration containing a recombinant vector into which shRNA (shRNA-mTOR) having mTOR inhibitory ability represented by the nucleotide sequence of SEQ ID NO: 1 is introduced.
- shRNA shRNA-mTOR
- the present invention also provides a method for treating macular degeneration, characterized in that the patient is treated with siRNA represented by the nucleotide sequence of SEQ ID NO: 1.
- the present invention also provides a method for treating macular degeneration, characterized in that the patient is treated with a recombinant vector having shRNA (shRNA-mTOR) having mTOR inhibitory ability represented by any one of SEQ ID NO: 1.
- shRNA-mTOR a recombinant vector having shRNA (shRNA-mTOR) having mTOR inhibitory ability represented by any one of SEQ ID NO: 1.
- Figure 1 shows that after administration of the shRNA in the laser-induced choroidal neovascular macular degeneration model, choroidal neovascular fluorescence leakage was reduced by fluorescein angiography
- A is induction of macular degeneration, administration of shRNA and fluorescent fundus vessels The contrast schedule is shown
- BD shows the fluorescein angiography results before shRNA administration
- EG shows the fluorescein angiography results after shRNA administration.
- Figure 2 is a picture showing the expression of mTOR and the expression of cells introduced into the vector after the injection of the scAAV vector into the vitreous, (a) shows a cell into which the vector is introduced, (b) is a change in the expression of mTOR It is shown.
- Figure 3 shows the change in the expression of CD31 after administration of shRNA in the laser-induced choroidal neovascular macular degeneration model
- (a) and (b) is a photograph (a) and graphs confirmed in retinal pigment epithelial-choroid complex tissue specimens
- (b) and (c) are photographs obtained from a neural retinal-retinal pigment epithelial-choroid complex tissue specimen.
- Figure 4 is a graph confirming the change of inflammatory cells after administration of shRNA in the laser-induced choroidal neovascular macular degeneration model, (a) shows CD11b positive cells, (b) shows F4 / 80 positive cells. .
- FIG. 5 is a photograph showing the change in autophagy after administration of shRNA in the laser-induced choroidal neovascular macular degeneration model, (a) shows LC3B positive cells, and (b) shows ATG7 positive cells.
- Figure 6 is a photograph (a) and graph (b) confirming the change in apoptosis after administration of shRNA in the laser-induced choroidal neovascular macular degeneration model.
- the age-related macular degeneration caused by a decrease in the function of the retinal pigment epithelial cell layer and atrophy due to aging was to be treated by a mechanism other than angiogenesis-inhibitory mechanism by the conventional method using anti-VEGF antibody.
- a mechanism other than angiogenesis-inhibitory mechanism by the conventional method using anti-VEGF antibody.
- the shRNA-based mTOR inhibitor was treated in a laser-induced macular degeneration animal model, significant decreases in the size of lesions were identified in the treatment group.
- the present invention relates to a pharmaceutical composition for treating or preventing macular degeneration containing an siRNA represented by the nucleotide sequence of SEQ ID NO: 1.
- the siRNA represented by the nucleotide sequence of SEQ ID NO: 1 is an siRNA that acts as an inhibitor of mTOR, and the inhibition of mTOR is involved in the formation of choroidal neovascularization (CNV) in age-related macular degeneration (AMD). It is thought to be able to block the influx and proliferation of inflammatory cells, which can not be shown by the anti-VEGF antibody, and can be a target of new mechanism development. mTOR inhibition inhibits proliferation of endothelial cells, another major member of choroidal neovascularization, and activates autophagy. It also improves apoptosis of nerve cells in neural retinal tissue.
- siRNA used in the present invention is as follows.
- the shRNA-based mTOR inhibitor used in the present invention was known to mediate autophagy activation in malignant tumor cells at the time of initial development, and in the present invention the activation and activation of autophagy through macular degeneration animal model Check around.
- SiRNA used in the present invention can be prepared according to the production method of RNA molecules known in the art.
- a method for preparing RNA molecules chemical synthesis methods and enzymatic methods can be used.
- the chemical synthesis of RNA molecules can use the methods described in the literature (Verma and Eckstein, Annu. Rev. Biochem. 67, 99-134, 1999), and the enzymatic synthesis of RNA molecules is T7, T3.
- phage RNA polymerases such as SP6 RNA polymerase are disclosed in the literature (Milligan and Uhlenbeck, Methods Enzymol. 180: 51-62, 1989).
- Viral or viral vectors useful for delivering siRNA for mTOR in the present invention include baculoviridae, parvoviridae, picornoviridae, herpesviridae, Poxviridae, adenoviridae, and the like, but are not limited thereto.
- the mTOR target siRNA according to the present invention when used as a pharmaceutical composition, it may further include a suitable carrier, excipient or diluent commonly used in the preparation of the pharmaceutical composition.
- Carriers, excipients or diluents usable in the present invention include lactose, dextrose, sucrose, sorbitol, mannitol, xylitol, erythritol, maltitol, starch, acacia rubber, alginate, gelatin, calcium phosphate, calcium silicate, cellulose, Methyl cellulose, microcrystalline cellulose, polyvinyl pyrrolidone, water, methylhydroxybenzoate, propylhydroxybenzoate, talc, magnesium stearate, mineral oil, and the like.
- compositions can be used in the form of powders, granules, tablets, capsules, suspensions, emulsions, syrups, aerosols and the like, oral formulations, suppositories, and sterile injectable solutions, respectively, according to conventional methods.
- Solid preparations for oral administration include tablets, pills, powders, granules, capsules, and the like, and the solid preparations may include at least one excipient, for example, starch, calcium carbonate, sucrose ( Prepare by mixing sucrose or lactose, gelatin, etc.
- Oral liquid preparations include suspensions, solvents, emulsions, and syrups, and may include various excipients, such as wetting agents, sweeteners, fragrances, and preservatives, in addition to commonly used simple diluents such as water and liquid paraffin. .
- Formulations for parenteral administration include sterile aqueous solutions, non-aqueous solvents, suspensions, emulsions, lyophilized preparations, suppositories.
- non-aqueous solvent and suspending agent propylene glycol, polyethylene glycol, vegetable oil such as olive oil, injectable ester such as ethyl oleate, and the like can be used.
- base of the suppository witepsol, macrogol, tween 61, cacao butter, laurin butter, glycerogelatin and the like can be used.
- the amount of the composition may vary depending on the age, sex, and weight of the patient, but the amount of 0.1 to 2.0 mg / kg may be administered once to several times daily.
- the dosage of such a composition can be increased or decreased depending on the route of administration, the severity of the disease, sex, weight, age, and the like. Therefore, the above dosage does not limit the scope of the present invention in any aspect.
- composition can be administered to mammals such as mice, mice, livestock, humans, and the like by various routes. All modes of administration can be expected, for example, by oral, rectal or intravenous, intramuscular, subcutaneous, intrauterine dural or intracerebroventricular injection.
- the present invention relates to a pharmaceutical composition for treating or preventing macular degeneration with a recombinant vector into which shRNA (shRNA-mTOR) having mTOR inhibitory ability represented by the nucleotide sequence of SEQ ID NO: 1 is introduced.
- shRNA shRNA-mTOR
- the present invention provides a method of treating a patient with a recombinant vector having a siRNA represented by the nucleotide sequence of SEQ ID NO: 1 or shRNA (shRNA-mTOR) having an mTOR inhibitory ability represented by the nucleotide sequence of SEQ ID NO: 1 introduced. It relates to a method for treating macular degeneration characterized by.
- Adeno Associated Virus AAV
- Adenoviruses rarely cause immune responses and cytotoxicity.
- adeno-associated virus serotype 2 can efficiently deliver genes to neurons of the CNS, and can also efficiently express transgenes in the nervous system for a long time.
- non-viral vectors useful for delivering siRNA for mTOR in the present invention include all vectors commonly used for gene therapy, except for the aforementioned viral vectors, for example, various plasmids and liposomes that can be expressed in eukaryotic cells. Etc.
- siRNA targeting mTOR is preferably operably linked to at least a promoter in order to be properly transcribed in delivered cells.
- the promoter may be any promoter capable of functioning in eukaryotic cells, but a human H1 polymerase-III promoter is more preferable.
- it may further comprise regulatory sequences, including leader sequence, polyadenylation sequence, promoter, enhancer, upstream activation sequence, signal peptide sequence and transcription terminator.
- choroidal neovascularization was induced by laser treatment on the eye of the animal.
- 8-week-old male C57 / BL6 mice were anesthetized with 40 mg / kg zolazepam / tiletamine and 5 mg / kg xylazine, followed by dilated pupils with 0.5% tropicamide and 2.5% phenylephrine.
- Laser photocoagulation in the right eye of the mouse using a PASCAL diode ophthalmic laser system (Nd: YAG, 532nm, Topcon Medical Laser Systems, Inc., Santa Clara, CA, USA) to induce choroidal neovascularization (CNV). laser photoagulation (LP).
- PASCAL diode ophthalmic laser system Nd: YAG, 532nm, Topcon Medical Laser Systems, Inc., Santa Clara, CA, USA
- a vector derived from a self-complementary adeno-associated virus serotype 2 vector (scAAV2) was used.
- Laser photocoagulation was induced in anesthesia and 6 days later, the pupils of the right eye of the mouse were dilated and the vector was injected into the vitreous body.
- Vector injection was performed using a nanofill syringe with a blunt needle with a 35 gauge thickness, and 1 ⁇ l was injected at a concentration of 5.0 ⁇ 10 10 viral genomes (vg) / ml.
- mice were divided into three groups of 15 rats, and physiological saline, non-specific shRNA, or mTOR shRNA of SEQ ID NO: 1 were injected into the vitreous. Five mice were treated as negative controls without choroidal neovascularization and intravitreal injection.
- Subject group 1 (shRNA-mTOR experimental group) Laser-induced choroidal neovascularization + AAV-mTOR shRNA / GFP injection
- Subject 2 (shRNA-nonspecific control) Laser-induced choroidal neovascularization + AAV-specific shRNA / GFP injection Target group 3 (physiological saline control group) Laser-induced choroidal neovascularization + physiological saline injection Target group 4 (voice control) No treatment
- the scAAV vector injected into the vitreous was introduced, the scAAV vector into which the gene encoding GFP was inserted was used. Cryosection samples were prepared as described in Example 2-3, and GFP expression was examined using anti-GFP antibodies (abcam, Cambridge, MA). As a result, they were expressed in CD31 positive vascular endothelial cells as well as inner retinal cells. It was found (FIG. 2A).
- the scAAV vector is known to be introduced into inner retinal cells in the wild-type mouse retina, including cells located in the retinal ganglion cell and the inner nuclear layer (Lee SH).
- Tissue specimen preparation for immunofluorescence staining was carried out as follows. After anesthetizing the animals, 0.1 M PBS containing 150 U / ml heparin was perfused through the heart, followed by 4% paraformaldehyde / 0.1 M PB. After fixing the fixed eyeball, the anterior segment containing the cornea and lens was removed. The neural retinal-retinal pigment epithelial-choroid complex tissue specimens thus prepared were further fixed in 4% parafomaldehyde / 0.1 M PB. To prepare frozen sections, fixed tissues were transferred to 30% sucrose / PBS and left overnight. Subsequently, sagittal sections having a thickness of 10 ⁇ m were made in a frozen state in which OCT compounds (Sakura Finetek, Torrance, CA) were attached to the microscope slide.
- OCT compounds Sakura Finetek, Torrance, CA
- the mTOR shRNA inserted with the mTOR shRNA of SEQ ID NO: 1 was injected into the vitreous and mTOR expression was examined.
- Expression of mTOR was immunofluorescent stained using an anti-mTOR antibody (1: 200; R & D Systems, Minneapois, MN, AF15371) on frozen sections prepared as described in Example 2-3.
- the expression of mTOR was not observed in the negative control group, which was not irradiated with laser. However, in the case of choroidal neovascularization by laser irradiation, the expression was increased in the neural retina and subretinal regions.
- This mTOR expression was not changed by physiological saline or nonspecific shRNA, but was shown to be reduced by mTOR shRNA, confirming that the sequence was effective in inhibiting mTOR expression (FIG. 2).
- the scAAV vector containing the mTOR shRNA inserted into the vitreous is injected into the shRNA as described in Example 2 in the choroidal neovascular macular degeneration animal model. Treatment effect was confirmed in Examples 3-1 to 3-5.
- Fluorescent leakage of choroidal neovascularization was measured using fluorescein angiography (FFA). Fluorescein angiography was performed using a Scanning laser ophthalmoscope (Heidelberg Retina Angiograph 2; Heidelberg Engineering, Heidelberg, Germany). 0.1 ml of 2% fluorescein sodium was injected intraperitoneally into the mice in anesthesia, wait 3 to 5 minutes, and the pupils were shaken to obtain an FFA image. Proper choroidal neovascularization was confirmed after 5 days of laser irradiation, and then, as described in Example 2-1, scAAV-mTOR shRNA was injected into the vitreous body and 7 days later (after 13 days of laser irradiation). .
- FFA fluorescein angiography
- mTOR shRNA was treated with anti-CD31 antibody (1: 200; BD Pharmingen, Inc., San Diego, CA, 550274), which can selectively identify vascular endothelial cells. Endothelial cells were observed.
- Tissue specimen preparation for immunofluorescence staining was carried out as follows. After anesthetizing the animals, 0.1 M PBS containing 150 U / ml heparin was perfused through the heart, followed by 4% paraformaldehyde / 0.1 M PB. After fixing the fixed eyeball, the anterior segment containing the cornea and lens was removed.
- neural retina was further removed to make retinal pigment epithelial choroid complex and further fixed in 4% paraformaldehyde / 0.1 M PB.
- the eyeball was removed and further fixed in 4% parafomaldehyde / 0.1 M PB with neural retina attached.
- the retinal pigment epithelial-choroid complex or neural retinal pigment epithelial-choroid complex thus prepared was transferred to 30% sucrose / PBS and submerged overnight to produce a frozen section specimen, followed by an OCT compound (Sakura Finetek, Torrance, CA). 10 ⁇ m thick sagittal sections were made in the frozen state and attached to the microscope slide.
- Retinal pigment epithelial-choroid complex fragments were stained with anti-CD31 antibody and phalloidin (Thermo Fisher Scientific, Waltham, MA, A22287), and the choroidal neovascular region was expressed by mTOR shRNA as compared with physiological saline or non-specific shRNA injection. This was shown to be significantly reduced (Fig. 3) and the result of examining the retinal-retinal pigment epithelial-choroid complex fragments showed that the mTOR shRNA was introduced to reduce the CD31 positive cells among the cells expressing GFP (Fig. 3). ).
- mTOR shRNA acts on vascular endothelial cells, inhibits vascular growth and shows macular degeneration.
- the numerical value is arithmetic with the mean ⁇ standard error of the mean, and statistical analysis (Kruskal-wallis test, posthoc analysis, Bonferroni's mehtod) using SPSS software (ver. 20.0 for Windows; SPSS, Inc., Chicago, IL, USA) , p ⁇ 0.05 was considered as a significant level.
- the number of CD11b and F4 / 80 positive staining cells observed in the subretinal and retina was measured, indicating that the mTOR shRNA was significantly reduced compared to the physiological saline or non-specific shRNA injection. That is, the number of F4 / 30 positive inflammatory cells introduced into the retina was reduced to 84.4 ⁇ 17 or 82.8 ⁇ 10.0 when injected with saline or non-specific shRNA or 42.4 ⁇ 10.4 when injected with mTOR shRNA. , 123.8 ⁇ 13.0 or 127.6 ⁇ 14.4 was found to decrease to 90.0 ⁇ 11.6 (Fig. 4).
- mTOR inhibition by mTOR shRNA has a therapeutic effect on macular degeneration by reducing the retinal influx and proliferation of inflammatory cells.
- anti-LC3 antibodies (1: 200; Novus Biologicals, Littleton, CO, NB110-2220), which can selectively identify autophagy to determine whether choroidal neovascular lesions are reduced by mTOR shRNA; Immunofluorescence staining was performed using anti-ATG7 antibody. Tissue specimen preparation for immunofluorescence staining followed the preparation of neural retinal-retinal pigment epithelial-choroid complex tissue specimens described in Example 3-2. As a result, LC3B or ATG7 positive cells were not observed when physiological saline or non-specific shRNA was injected, but when mTOR shRNA was injected, it was observed at the lesion site and around, indicating that autophagy was increased by mTOR shRNA (FIG. 5). ).
- mTOR inhibition by mTOR shRNA has a therapeutic effect on macular degeneration by increasing autophagy.
- TUNEL terminal dUTP nick-end labeling
- the number of TUNEL positive cells was found to be reduced to 17.8 ⁇ 4.8 or 19.4 ⁇ 4.0 when injected with saline or non-specific shRNA or 8.4 ⁇ 3.0 when injected with mTOR shRNA (Figure 6).
- mTOR inhibition by mTOR shRNA decreases the cells located in the outer nuclera layer and thus has a therapeutic effect on macular degeneration.
- age-related macular degeneration which is a representative retinal disease causing adult blindness.
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Abstract
Description
그룹 | 처치내용 |
대상군 1(shRNA-mTOR 실험군) | 레이저유발 맥락막신생혈관 형성+AAV-mTOR shRNA/GFP 주사 |
대상군 2(shRNA-비특이 대조군) | 레이저유발 맥락막신생혈관 형성+AAV-비특이 shRNA/GFP 주사 |
대상군 3(생리식염수 대조군) | 레이저유발 맥락막신생혈관 형성+생리식염수 주사 |
대상군 4(음성대조군) | 처치 없음 |
Claims (3)
- 서열번호 1의 염기서열로 표시되는 siRNA를 함유하는 황반변성 치료 또는 예방용 약학조성물.
- 서열번호 1의 염기서열로 표시되는 mTOR 저해능을 가지는 shRNA(shRNA-mTOR)가 도입되어 있는 재조합벡터를 함유하는 황반변성 치료 또는 예방용 약학조성물.
- 제2항에 있어서, 상기 재조합벡터는 AAV인 것을 특징으로 하는 황반변성 치료 또는 예방용 약학조성물.
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AU2017323898A AU2017323898B2 (en) | 2016-09-09 | 2017-03-17 | Pharmaceutical composition containing mTOR inhibitor for treating macular degeneration |
US16/327,850 US10583150B2 (en) | 2016-09-09 | 2017-03-17 | Pharmaceutical composition containing mTOR inhibitor for treating macular degeneration |
EP17848931.6A EP3517133B1 (en) | 2016-09-09 | 2017-03-17 | Pharmaceutical composition containing mtor inhibitor for treating macular degeneration |
JP2019514034A JP6931046B2 (ja) | 2016-09-09 | 2017-03-17 | mTOR阻害剤を含有する黄斑変性治療用薬学組成物 |
CA3035675A CA3035675C (en) | 2016-09-09 | 2017-03-17 | Pharmaceutical composition containing mtor inhibitor for treating macular degeneration |
CN201780062349.XA CN109937053B (zh) | 2016-09-09 | 2017-03-17 | 用于治疗黄斑变性的含有mTOR抑制剂的药物组合物 |
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KR1020170033986A KR101951787B1 (ko) | 2016-09-09 | 2017-03-17 | mTOR 저해제를 함유하는 황반변성 치료용 의약조성물 |
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WO2009143371A2 (en) * | 2008-05-21 | 2009-11-26 | Intradigm Corporation | COMPOSITIONS COMPRISING mTOR SIRNA AND METHODS OF USE THEREOF |
WO2010064851A2 (ko) * | 2008-12-02 | 2010-06-10 | 울산대학교 산학협력단 | 종간 교차활성을 지닌 mTOR을 표적으로 하는 siRNA, 이를 포함하는 재조합벡터 및 이를 함유하는 약학조성물 |
WO2010129622A1 (en) * | 2009-05-04 | 2010-11-11 | Macusight, Inc. | Mtor pathway inhibitors for treating ocular disorders |
WO2013056105A2 (en) * | 2011-10-13 | 2013-04-18 | The Johns Hopkins University | INHIBITION OF SPINAL MAMMALIAN TARGET OF RAPAMYCIN (mTOR) REDUCES CANCER PAIN, OPIOID TOLERANCE, AND HYPERALGESIA |
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