Patents by Inventor Kengo Sakaguchi
Kengo Sakaguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Porphyrin compound or salt thereof, cancer therapeutic agent, photosensitizer, and fluorescent probe
Patent number: 11643430Abstract: There is provided with a porphyrin compound represented by Formula (I) or a salt thereof; where A is a linking group represented as —X—NHCO— where X is a C1 to C6 alkylene group, each of R1, R2, R4, R5, R7, R8, R10, and R11 is a hydrogen atom, each of R3, R6, and R9 is a substituent of Formula; R12 is selected from a group of substituents represented by Formulae, R13 is a sulfo group, Ra, Rb, and Rc are substituents independently selected from C1 to C6 alkyl groups, and Rd is a hydrogen atom or a C1 to C6 alkyl group, and Rx is a substituent represented by General Formula. The porphyrin compound is useful as a cancer therapeutic agent, photosensitizer and fluorescent probe.Type: GrantFiled: August 31, 2021Date of Patent: May 9, 2023Assignees: M.T.3, INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Hiroaki Horiuchi, Masahiko Oshige, Ichiro Matsuo, Tetsuo Okutsu, Shinji Katsura, Toshitada Yoshihara, Seiji Tobita, Fumio Sugawara, Kengo Sakaguchi -
Publication number: 20220098227Abstract: There is provided with a compound. The compound is represented by formula or a salt thereof. R1 is an aliphatic hydrocarbon group having 10 to 26 carbon atoms.Type: ApplicationFiled: September 2, 2021Publication date: March 31, 2022Applicants: M.T.3, Inc., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Masahiko OSHIGE, Ichiro MATSUO, Hiroaki HORIUCHI, Shinji KATSURA, Fumio SUGAWARA, Kengo SAKAGUCHI
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Patent number: 11267840Abstract: There is provided with a compound. The compound is represented by formula or a salt thereof. R1 is an aliphatic hydrocarbon group having 10 to 26 carbon atoms.Type: GrantFiled: September 2, 2021Date of Patent: March 8, 2022Assignees: M.T.3, INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Masahiko Oshige, Ichiro Matsuo, Hiroaki Horiuchi, Shinji Katsura, Fumio Sugawara, Kengo Sakaguchi
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Publication number: 20220064203Abstract: There is provided with a compound represented by Formula or a salt thereof; where A is a linking group represented as —X—NHCO— where X is a C1 to C6 alkylene group, each of R1, R2, R4, R5, R7, R8, R10, and R11 is a hydrogen atom, each of R3, R6, and R9 is a substituent of Formula; R12 is selected from a group of substituents represented by Formulae, R13 is a sulfo group, Ra, Rb, and Rc are substituents independently selected from C1 to C6 alkyl groups, and Rd is a hydrogen atom or a C1 to C6 alkyl group, and Rx is a substituent represented by General Formula.Type: ApplicationFiled: August 31, 2021Publication date: March 3, 2022Applicants: M.T.3, Inc., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Hiroaki HORIUCHI, Masahiko OSHIGE, Ichiro MATSUO, Tetsuo OKUTSU, Shinji KATSURA, Toshitada YOSHIHARA, Seiji TOBITA, Fumio SUGAWARA, Kengo SAKAGUCHI
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Patent number: 10316340Abstract: A glucose production method is characterized in that glucose is produced from organisms that hold at least a disaccharide inside the body, which organisms utilize a cellulose source as food or for nutrients, particularly insects, crustaceans, and mushrooms.Type: GrantFiled: June 2, 2014Date of Patent: June 11, 2019Assignees: ACTEIIVE CORPORATIONInventors: Kengo Sakaguchi, Yoshihiro Kanai, Tatsushi Ruike
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Patent number: 10175183Abstract: An agent for searching for protein crystallization conditions, containing a water-swellable layered silicate having a fluorine atom and a hydroxyl group, wherein the fluorine atom is covalently bonded to the silicate by isomorphous substitution with the hydroxyl group. A method of searching for protein crystallization conditions, which comprises a step of mixing the agent for searching for protein crystallization conditions described above and a solution in which a protein is dissolved.Type: GrantFiled: March 29, 2012Date of Patent: January 8, 2019Assignees: KUNIMINE INDUSTRIES CO., LTD., TOKYO UNIVERSITY OF SCIENCE EDUCATIONAL FOUNDATION ADMINISTRATIVE ORGANIZATIONInventors: Keiichi Kurosaka, Munehiro Kubota, Kengo Sakaguchi, Keita Ino, Itsumi Udagawa, Kazuki Iwabata, Yoichi Takakusagi, Yasutaka Seki
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Publication number: 20160108446Abstract: A glucose production method is characterized in that glucose is produced from organisms that hold at least a disaccharide inside the body, which organisms utilize a cellulose source as food or for nutrients, particularly insects, crustaceans, and mushrooms.Type: ApplicationFiled: June 2, 2014Publication date: April 21, 2016Inventors: Kengo SAKAGUCHI, Yoshihiro KANAI, Tatsushi RUIKE
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Publication number: 20130344523Abstract: An agent for searching for protein crystallization conditions, containing a water-swellable layered silicate having a fluorine atom and a hydroxyl group, wherein the fluorine atom is covalently bonded to the silicate by isomorphous substitution with the hydroxyl group. A method of searching for protein crystallization conditions, which comprises a step of mixing the agent for searching for protein crystallization conditions described above and a solution in which a protein is dissolved.Type: ApplicationFiled: March 29, 2012Publication date: December 26, 2013Applicants: TOKYO UNIVERSITY OF SCIENCE EDUCATIONAL FOUNDATION ADMINISTRATIVE ORGANIZATION, KUNIMINE INDUSTRIES CO., LTD.Inventors: Keiichi Kurosaka, Munehiro Kubota, Kengo Sakaguchi, Keita Ino, Itsumi Udagawa, Kazuki Iwabata, Yoichi Takakusagi, Yasutaka Seki
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Patent number: 8394933Abstract: It is an object of the present invention to provide: a protein refolding column filler, which is effective for the refolding, namely, the activation of the function, of an inactive protein with an as yet unformed higher order structure produced in Escherichia coli or the like, or a protein whose conformation has been changed due to a certain cause and which has become inactivated; and a column filled with the aforementioned column filler. The present invention provides a protein refolding column filler, which comprises zeolite with BEA structure (Zeolite Beta) that is granulated into a particle state.Type: GrantFiled: April 4, 2008Date of Patent: March 12, 2013Assignee: FUJIFILM CorporationInventors: Masayuki Kawakami, Tatsuo Tsunoda, Hideaki Togashi, Takayuki Nara, Shun-ichi Matsuura, Chisato Sekikawa, Akiko Kawai, Akiyoshi Kawata, Fujio Mizukami, Kengo Sakaguchi
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Patent number: 7973145Abstract: Sulfoquinovosylacyl propanediol compounds represented by formula (I): wherein R1 is an acyl residue of a fatty acid, Y is a number of 1, 2 or 3, and M represents a cation having a positive charge equal to Y and pharmaceutically acceptable salts thereof are effective for treating tumors.Type: GrantFiled: January 29, 2009Date of Patent: July 5, 2011Assignee: Toyo Suisan Kaisha, Ltd.Inventors: Keisuke Ohta, Masahiko Miura, Kengo Sakaguchi, Fumio Sugawara, Noriyuki Sato, Hiroeki Sahara, Nobuaki Takahashi, Yoko Mori, Takayuki Yamazaki, Kazuyoshi Masaki, Hiroshi Murata
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Publication number: 20110158908Abstract: Disclosed are: a composition and a method for the diagnosis and/or the treatment of a CSABP-related disease, the regulation of the proliferation of an RNA virus and the regulation of an RNA-metabolizing system, which targets a cyclosporin A-binding protein (CSABP); a method for the screening of a component that targets a CSABP; a composition and a method for the detection/inhibition of CsA, NS5B or cyclosphilin B by utilizing a CSABP; a promoter for a CSABP; a method for the screening of a substance capable of regulating the expression of a CSABP by utilizing the promoter; and a method for the determination of the occurrence or clinical stage of a CSABP-related disease.Type: ApplicationFiled: August 22, 2008Publication date: June 30, 2011Applicant: Sapporo Medical UniversityInventors: Hiroeki Sahara, Yoko Mori, Nobuaki Takahashi, Noriyuki Sato, Fumio Sugawara, Kengo Sakaguchi, Kengo Morohashi, Kazuki Iwabata, Koichi Watashi, Kunitada Shimotohno, Kokichi Kikuchi, Wataru Tsutae, Hiroki Miyashita
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Publication number: 20100298246Abstract: Sulfoquinovosylacyl propanediol compounds represented by formula (I): wherein R1 is an acyl residue of a fatty acid, Y is a number of 1, 2 or 3, and M represents a cation having a positive charge equal to Y and pharmaceutically acceptable salts thereof are effective for treating tumors.Type: ApplicationFiled: July 30, 2010Publication date: November 25, 2010Applicant: TOYO SUISAN KAISHA, LTD.Inventors: Keisuke Ohta, Masahiko Miura, Kengo Sakaguchi, Fumio Sugawara, Noriyuki Sato, Hiroeki Sahara, Nobuaki Takahashi, Yoko Mori, Takayuki Yamazaki, Kazuyoshi Masaki, Hiroshi Murata
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Publication number: 20100210820Abstract: It is an object of the present invention to provide: a protein refolding column filler, which is effective for the refolding, namely, the activation of the function, of an inactive protein with an as yet unformed higher order structure produced in Escherichia coli or the like, or a protein whose conformation has been changed due to a certain cause and which has become inactivated; and a column filled with the aforementioned column filler. The present invention provides a protein refolding column filler, which comprises zeolite with BEA structure (Zeolite Beta) that is granulated into a particle state.Type: ApplicationFiled: April 4, 2008Publication date: August 19, 2010Applicants: FUJIFILM CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCEInventors: Masayuki Kawakami, Tatsuo Tsunoda, Hideaki Togashi, Takayuki Nara, Shun-ichi Matsuura, Chisato Sekikawa, Akiko Kawai, Akiyoshi Kawata, Fujio Mizukami, Kengo Sakaguchi
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Publication number: 20100202971Abstract: The problem to be solved of the present invention is to provide a novel compound which specifically resides in a tumor, a method for allowing it to reside in a tumor, and a method for detecting, diagnosing, and treating tumor with use thereof. Means for solving the problem is a compound represented by chemical formula (I) wherein R is an anionic group binding to hydrogen, R1 is OH, OCOH, OCO(CH2)hCH3, or an acting group, h being an integer of 0 or more, R2 is H, OH, OCOH, OCO(CH2)iCH3, or an acting group, i being an integer of 0 or more, R3 is OH, SO3H, or an acting group, R4 is OH, SO3H, or an acting group, and R5 is OH, SO3H, or an acting group, at least one of R1, R2, R3, R4, and R5 containing an acting group, or pharmaceutically acceptable salts thereof.Type: ApplicationFiled: January 15, 2010Publication date: August 12, 2010Inventors: Keisuke OHTA, Masahiko Miura, Kengo Sakaguchi, Fumio Sugawara, Masahiro Ishima, Hiroshi Murata
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Publication number: 20090253644Abstract: A radiosensitizer comprising, as an active ingredient, at least one kind of compound selected from the group consisting of a compound represented by the following general formula (1): (wherein R101 represents an acyl residue of higher fatty acid, and R102 represents a hydrogen atom or an acyl residue of higher fatty acid), and a pharmaceutically acceptable salt thereof.Type: ApplicationFiled: June 8, 2009Publication date: October 8, 2009Applicant: TOYO SUISAN KAISHA, LTD.Inventors: Ippei Sakimoto, Masahiko Miura, Keiko Kataoka, Kengo Sakaguchi, Fumio Sugawara, Keisuke Ohta, Takayuki Yamazaki
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Publication number: 20090209475Abstract: Sulfoquinovosylacyl propanediol compounds represented by formula (I): wherein R1 is an acyl residue of a fatty acid, Y is a number of 1, 2 or 3, and M represents a cation having a positive charge equal to Y and pharmaceutically acceptable salts thereof are effective for treating tumors.Type: ApplicationFiled: January 29, 2009Publication date: August 20, 2009Applicant: TOYO SUISAN KAISHA, LTD.Inventors: Keisuke Ohta, Masahiko Miura, Kengo Sakaguchi, Fumio Sugawara, Noriyuki Sato, Hiroeki Sahara, Nobuaki Takahashi, Yoko Mori, Takayuki Yamazaki, Kazuyoshi Masaki, Hiroshi Murata
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Publication number: 20090005543Abstract: The present invention provides a method for refolding protein produced, for example, by Escherichia coli, that is inactive due to an as yet unformed higher order structure, or protein deactivated due to a change in conformation for some reason. The invention comprises a method, refolding kit, refolding agent, and molding that activate a native function or activity inherent to a protein through treatment with zeolite beta of protein produced, for example, by Escherichia coli, that is inactive due to an as yet unformed higher order structure, or protein deactivated due to a change in conformation for some reason. The invention also comprises a method for producing an active protein that utilizes the same. As compared with conventional methods, the present invention can provide a novel method for activating protein function that is highly versatile and generalizable, that employs a simple and easy protocol, and that is inexpensive and enables repeated use of the function activator.Type: ApplicationFiled: September 4, 2008Publication date: January 1, 2009Applicant: National Inst of Adv Industrial Science and Tech.Inventors: Fujio MIZUKAMI, Yoshimichi Kiyozumi, Takuji Ikeda, Akiko Kawai, Takako Nagase, Kengo Sakaguchi, Hiroyuki Chiku
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Patent number: 7378398Abstract: A method for treating an adenocarcinoma excluding colon cancer, lung cancer and gastric cancer, comprising administering to a subject in need thereof and suffering from adenocarcinoma cancer, a pharmaceutically effective amount of at least one sulfoquinovosylacylglycerol compound represented by formula (1): wherein R101 represents an acyl residue of an unsaturated higher fatty acid, and R102 represents a hydrogen atom, and/or at least one pharmaceutically acceptable salt thereof.Type: GrantFiled: July 3, 2006Date of Patent: May 27, 2008Assignee: Toyo Suisan Kaisha, Ltd.Inventors: Takayuki Yamazaki, Fumio Sugawara, Keisuke Ohta, Kazuyoshi Masaki, Kotaro Nakayama, Kengo Sakaguchi, Noriyuki Sato, Hiroeki Sahara, Tatsuya Fujita
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Publication number: 20070219145Abstract: A radiosensitizer comprising, as an active ingredient, at least one kind of compound selected from the group consisting of a compound represented by the following general formula (1): (wherein R101 represents an acyl residue of higher fatty acid, and R102 represents a hydrogen atom or an acyl residue of higher fatty acid), and a pharmaceutically acceptable salt thereof.Type: ApplicationFiled: June 24, 2005Publication date: September 20, 2007Inventors: Ippei Sakimoto, Masahiko Miura, Keiko Kataoka, Kengo Sakaguchi, Fumio Sugawara, Keisuke Ohta, Takayuki Yamazaki
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Patent number: 7186888Abstract: The invention relates to isolated genes encoding polypeptides that interact with calreticulin (CRT), plants and plant cells transformed with the CRT genes for resistance against cold stress, and methods of producing the transformed plants and cells.Type: GrantFiled: November 25, 2002Date of Patent: March 6, 2007Assignees: National Institute of Agrobiological Sciences, Japan Science and Technology AgencyInventors: Setsuko Komatsu, Arun Sharma, Junji Hashimoto, Kengo Sakaguchi