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公开(公告)号:US20160237403A1
公开(公告)日:2016-08-18
申请号:US15028076
申请日:2014-10-09
Applicant: HEALIOS K.K. , RIKEN , OSAKA UNIVERSITY
Inventor: Masanori SAWADA , Masayo TAKAHASHI , Kiyotoshi SEKIGUCHI
CPC classification number: C12N5/0621 , A61K9/0048 , A61K35/30 , C12N2501/727 , C12N2506/45 , C12N2509/00 , C12N2533/52
Abstract: Provided are a production method of retinal pigment epithelial (RPE) cells that improves differentiation induction efficiency of pluripotent stem cells into RPE cells, and can provide highly pure RPE cells by a simple and easy operation in a short period, a culture method of RPE cells that can stably grow and culture a cell, a toxicity/efficacy evaluation method using RPE cells useful for transplantation therapy, and a therapeutic drug for a retinal disease. The invention relates to a production method of RPE cells, comprising adhesion culture of human pluripotent stem cells using a culture substrate coated with a laminin-E8 fragment, a culture method of RPE cells, comprising adhesion culture of RPE cells using a culture substrate coated with a laminin-E8 fragment, a toxicity or efficacy evaluation method using RPE cells obtained by producing or culturing by the method, and a therapeutic drug for a retinal disease, containing the RPE cells.
Abstract translation: 提供了一种提高多能干细胞向RPE细胞分化诱导效率的视网膜色素上皮(RPE)细胞的制备方法,可以通过简单易用的操作在短时间内提供高纯度的RPE细胞,RPE细胞的培养方法 可以稳定地培养细胞,使用可用于移植治疗的RPE细胞的毒性/功效评价方法,以及用于视网膜疾病的治疗药物。 本发明涉及RPE细胞的制备方法,其包括使用包被有层粘连蛋白-E8片段的培养基底的人多能干细胞的粘附培养,RPE细胞的培养方法,包括使用涂覆有 层粘连蛋白E8片段,使用通过该方法生产或培养获得的RPE细胞的毒性或功效评价方法和含有RPE细胞的视网膜疾病治疗药。
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公开(公告)号:US20220249698A1
公开(公告)日:2022-08-11
申请号:US17626042
申请日:2020-07-10
Applicant: RIKEN
Inventor: Masayo TAKAHASHI , Akishi ONISHI , Yuji TSUNEKAWA
IPC: A61K48/00 , A61K38/46 , A61K31/7088 , A61K38/17 , A61P27/02
Abstract: Provided is a novel therapeutic agent for a disease caused by a dominant gene mutation (7). A therapeutic agent of the present invention comprises a donor DNA (20) that contains a polynucleotide having the following sequences (a) to (c): (a) a normal gene (1); (b) a first reverse target sequence (2a) that is located upstream of the normal gene (1) and that is cleaved by a designer nuclease; and (c) a second reverse target sequence (2b) that is located downstream of the normal gene (1) and that is cleaved by the designer nuclease, where the reverse target sequences (2a, 2b) each mean a sequence obtained by inverting a target sequence (6) that is present in the genome and that is cleaved by the designer nuclease.
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公开(公告)号:US20250019652A1
公开(公告)日:2025-01-16
申请号:US18710340
申请日:2022-11-18
Applicant: RIKEN , Sumitomo Pharma Co., Ltd.
Inventor: Michiko MANDAI , Masayo TAKAHASHI , Suguru YAMASAKI , Matsuri HORIUCHI
IPC: C12N5/0793 , C12N5/00
Abstract: The present disclosure provides a method for manufacturing a cell aggregate comprising retinal tissue having a layer structure.
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公开(公告)号:US20200277571A1
公开(公告)日:2020-09-03
申请号:US16647454
申请日:2018-09-14
Inventor: Daiki NUKAYA , Mototsugu EIRAKU , Yuiko KINOSE , Akishi ONISHI , Masayo TAKAHASHI , Yoshiki SASAI (deceased)
Abstract: The present invention aims to provide a retinal tissue rich in cone photoreceptor precursors and/or cone photoreceptors, a retinal tissue rich in rod photoreceptor precursors and/or rod photoreceptors, and a production method thereof and the like. i) A method for increasing a proportion of a cone photoreceptor precursor and a cone photoreceptor in a photoreceptor precursor and a photoreceptor contained in a retinal tissue, including a step of culturing a retinal tissue, in an initial developmental stage to a stage where an emergence rate of a cone photoreceptor precursor reaches maximum, in a medium containing a dorsalization signal transmitter at a concentration sufficient to suppress expression of a ventral marker, or ii) a method for increasing a proportion of a rod photoreceptor precursor and a rod photoreceptor in a photoreceptor precursor and a photoreceptor contained in a retinal tissue, including a step of culturing a retinal tissue, in an initial developmental stage to a stage where an emergence rate of a cone photoreceptor precursor reaches maximum, in a medium containing a ventralization signal transmitter at a concentration sufficient to promote expression of a ventral marker.
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公开(公告)号:US20180171292A1
公开(公告)日:2018-06-21
申请号:US15896699
申请日:2018-02-14
Applicant: RIKEN
Inventor: Masayo TAKAHASHI , Satoshi OKAMOTO , Hiroyuki KAMAO
CPC classification number: C12N5/0621 , A61K35/00 , C12N2506/02 , C12N2506/45 , C12N2509/00 , C12N2533/54 , G01N33/5005
Abstract: The present invention provides a method of producing a cell sheet including the following steps (1) seeding and culturing retinal pigment epithelial cells on a collagen gel to form a cell sheet composed of the retinal pigment epithelial cells, and (2) degrading the collagen gel with collagenase to detach the cell sheet composed of the retinal pigment epithelial cells, and the like.
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公开(公告)号:US20190185799A1
公开(公告)日:2019-06-20
申请号:US16311588
申请日:2017-06-01
Applicant: SANPLATEC CORPORATION LTD. , RIKEN
Inventor: Satoshi KATOU , Junichi KUWABARA , Masayo TAKAHASHI , Naoshi KOIDE
CPC classification number: C12M23/06 , B65D77/06 , C12M1/00 , C12M3/00 , C12M23/22 , C12M23/24 , C12M23/38 , C12M23/52 , C12M37/00 , G01N1/28
Abstract: The invention provides a cell and biotissue transporting container for transporting cells or biotissues while maintaining their cultured state. A cell/biotissue transporting container A10 includes a base member 1 with an opening 110 at an upper end and a first tubular portion 11 extending vertically, a lid body 2 including a top plate portion 21 to close the opening 110 and a second tubular portion 22 extending from a peripheral edge of the top plate portion 21 in the thickness direction to fit onto the first tubular portion 11, and a container body 3, formed separately from the base member 1 using a flexible material, where the container body includes a bottom wall portion 31, a tubular side wall portion 32 rising from a peripheral edge of the bottom wall portion 31 and inserted into the opening 110, and a flange 33 extending outward from an upper edge of the side wall portion 32. At least one of the first and second tubular portions 11 and 22 includes a lock preventing relative movement between the base member 1 and the lid body 2 with the flange 33 being clamped between a peripheral edge portion of the opening 110 of the base member and the top plate portion 21 of the lid body 2.
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公开(公告)号:US20170313976A1
公开(公告)日:2017-11-02
申请号:US15521334
申请日:2015-10-23
Inventor: Atsushi KUWAHARA , Suguru YAMASAKI , Yasushi HIRAMINE , Yoshiki SASAI , Masayo TAKAHASHI
IPC: C12N5/0793 , A61K35/30 , C12N5/079 , G01N33/50 , A61L27/38
CPC classification number: C12N5/062 , A61K35/12 , A61K35/30 , A61L27/00 , A61L27/383 , A61L27/3895 , C12N5/0618 , C12N5/0619 , C12N2500/99 , C12N2501/115 , C12N2501/15 , C12N2501/155 , C12N2501/16 , C12N2501/40 , C12N2501/41 , C12N2501/415 , C12N2501/727 , C12N2506/45 , C12N2533/52 , C12Q1/02 , G01N33/5014
Abstract: The present invention provides a method for producing neural cells or a neural tissue, including the following steps (1)-(3): (1) a first step of culturing pluripotent stem cells in the absence of feeder cells and in a medium containing 1) a TGFβ family signal transduction pathway inhibiting substance and/or a Sonic hedgehog signal transduction pathway activating substance, and 2) a factor for maintaining undifferentiated state, (2) a second step of culturing the cells obtained in the first step in suspension to form a cell aggregate, and (3) a third step of culturing the aggregate obtained in the second step in suspension in the presence or absence of a differentiation-inducing factor to obtain an aggregate containing neural cells or a neural tissue.
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公开(公告)号:US20130218293A1
公开(公告)日:2013-08-22
申请号:US13765041
申请日:2013-02-12
Applicant: NIDEK CO., LTD. , RIKEN INSTITUTE
Inventor: Osamu MITA , Tsuguo NANJO , Yoshihisa HARADA , Toshifumi SUMIYA , Koji OSAWA , Susumu OSHIMA , Masayo TAKAHASHI , Hiroyuki KAMAO
IPC: A61F9/007
CPC classification number: A61F9/007 , A61F9/00727 , A61M1/0009 , A61M1/0041 , A61M1/0062 , A61M5/178 , A61M5/31511 , A61M2210/0612
Abstract: A medical instrument includes a handpiece, a tank portion configured to house a fluid, a suction/discharge unit configured to change a volume or pressure of an inside of the tank portion to suction the fluid into the tank portion or discharge the fluid from the tank portion, and an operating unit providing a member different from the suction/discharge unit and configured to operate the suction/discharge unit.
Abstract translation: 医疗器械包括手持件,构造成容纳流体的罐部分,吸入/排出单元,其构造成改变罐部分的内部的体积或压力以将流体吸入罐部分或从罐中排出流体 以及操作单元,其提供与吸入/排出单元不同的构件,并且构造成操作吸入/排出单元。
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公开(公告)号:US20240399026A1
公开(公告)日:2024-12-05
申请号:US18805131
申请日:2024-08-14
Applicant: RIKEN , SUMITOMO PHARMA CO., LTD.
Inventor: Daiki NUKAYA , Mototsugu EIRAKU , Yuiko KINOSE , Akishi ONISHI , Masayo TAKAHASHI , Yoshiki SASAI (deceased)
IPC: A61L27/38 , C12N5/0793 , G01N33/50
Abstract: The present invention aims to provide a method for suppressing differentiation of ganglion cell, amacrine cell, horizontal cell and/or bipolar cell in a neural retina tissue containing photoreceptor precursor and/or photoreceptor, and the like. A method for suppressing differentiation of a ganglion cell, an amacrine cell, a horizontal cell and/or a bipolar cell in a neural retinal tissue containing a photoreceptor precursor and/or a photoreceptor, including a step of culturing a retinal tissue comprising a neural retinal progenitor cell and in any stage between a differentiation stage immediately after emergence of a ganglion cell and a differentiation stage where emergence rate of a cone photoreceptor precursor reaches maximum in a medium containing a thyroid gland hormone signal transduction pathway agonist.
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10.
公开(公告)号:US20220295782A1
公开(公告)日:2022-09-22
申请号:US17639565
申请日:2020-09-02
Applicant: NICHIREI BIOSCIENCE INC. , RIKEN
Inventor: Ayaka INADA , Junko HOSOI , Masayo TAKAHASHI , Naoshi KOIDE
Abstract: The present disclosure provides a method for producing a frozen body of a three-dimensional tissue aggregate of retinal pigment epithelial cells, the method including a step of preparing the three-dimensional tissue aggregate of the retinal pigment epithelial cells, and a step of subjecting the three-dimensional tissue aggregate of the retinal pigment epithelial cells to a freezing treatment at a predetermined freezing temperature set in advance using, as an index, the occurrence rate of a linear aggregate of dead cells in the three-dimensional tissue aggregate of the retinal pigment epithelial cells after thawing, thus obtaining the frozen body.
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