Patents by Inventor Yih-Huang Hsieh
Yih-Huang Hsieh 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).
-
Patent number: 11773118Abstract: A new process to synthesis of compound OBI-3424 R-form and S-form products is provided. The “R-form” compound OBI-3423 was first synthesized with 48% overall yield from compound OBI-3424-5 by installation of the labile phosphate motif at later stage. The stereo chemistry is established by 5 steps chemo-enzyme combination synthesis to afford 99% optical purity. After then, the “S-form” compound OBI-3424 is prepared with improving overall yield of 54% from compound OBI-3424-5. The stereo chemistry is established by 4 steps combination of chemo-enzyme synthesis with excellent optical purity of 99%.Type: GrantFiled: February 21, 2020Date of Patent: October 3, 2023Assignee: OBI PHARMA, INC.Inventors: Cheng-Der Tony Yu, Yih-Huang Hsieh, Shu-Yi Lin, Chin-Sheng Chao, Yin-Cheng Hsieh, Ming-Tain Lai
-
Patent number: 11752204Abstract: The present invention provides vaccines comprising carbohydrate antigen conjugated to a diphtheria toxin (DT) as a carrier protein, wherein the ratio of the number of carbohydrate antigen molecule to the carrier protein molecule is higher than 5:1. Also disclosed herein is a novel saponin adjuvant and methods to inhibit cancer cells, by administering an effective amount of the vaccine disclose herein.Type: GrantFiled: November 1, 2019Date of Patent: September 12, 2023Assignee: OBI PHARMA INC.Inventors: Wei-Han Lee, Nan-Hsuan Wang, Chung-Hao Chang, Yih-Huang Hsieh, Cheng-Der Tony Yu, Cheng-Chi Wang, Yu-Hsin Lin, Yu-Chen Lin, I-Ju Chen
-
Patent number: 11642400Abstract: The present disclosure encompasses immunogenic/therapeutic compositions including Globo series antigens (SSEA-4, Globo H or SSEA-3) glycoconjugates and therapeutic adjuvants (OBI-821 or OBI-834) as well as methods of making and using the same to treat proliferative diseases such as cancer. The therapeutic conjugates include an antigen linked to a carrier. In particular, the therapeutic conjugates include a SSEA-4, Globo H or SSEA-3 moiety and a KLH moiety subunit linked via a linker. The therapeutic compositions are in part envisaged to act as cancer vaccines (single valent, bi-valent or tri-valent vaccines) for boosting the body's natural ability to protect itself, through the immune system from dangers posed by damaged or abnormal cells such as cancer cells. Exemplary immune response can be characterized by reduction of the severity of disease, including but not limited to, prevention of disease, delay in onset of disease, decreased severity of symptoms, decreased morbidity and delayed mortality.Type: GrantFiled: July 27, 2017Date of Patent: May 9, 2023Assignee: OBI PHARMA, INC.Inventors: Cheng-Der Tony Yu, Peiwen Yu, Kuo-Pao Lai, Wei-Han Lee, I-Ju Chen, Shu-Yi Lin, Yih-Huang Hsieh
-
Publication number: 20220106339Abstract: A new process to synthesis of compound OBI-3424 R-form and S-form products is provided. The “R-form” compound OBI-3423 was first synthesized with 48% overall yield from compound OBI-3424-5 by installation of the labile phosphate motif at later stage. The stereo chemistry is established by 5 steps chemo-enzyme combination synthesis to afford 99% optical purity. After then, the “S-form” compound OBI-3424 is prepared with improving overall yield of 54% from compound OBI-3424-5. The stereo chemistry is established by 4 steps combination of chemo-enzyme synthesis with excellent optical purity of 99%.Type: ApplicationFiled: February 21, 2020Publication date: April 7, 2022Applicant: OBI PHARMA, INC.Inventors: Cheng-Der Tony Yu, Yih-Huang Hsieh, Shu-Yi Lin, Chin-Sheng Chao, Yin-Cheng Hsieh, Ming-Tain Lai
-
Patent number: 11203645Abstract: The present disclosure relates to novel glycosynthase enzymes for glycoprotein engineering and/or homogeneous antibody remodeling. The enzyme variants, termed EndoSd-D232M and EndoSz-D234M, contain the glycan conjugation and/or modification activity at the conserved N297 glycosylation site of Fc region of an exemplary antibody. It has been demonstrated that the glycosynthase activities of EndoSd-D232M and EndoSz-D234M can be applied to various mAbs targeting different receptors, including, but not limited to, Globo H, SSEA-4, SSEA-3 series of receptors (OBI-888; Globo H ganglioside), Herceptin (Her 2 receptor), Perj eta (Her 2 receptor) and Vectibix (EGFR receptor). It has been found that both mAb-GlcNAc and mAb-GlucNAc(F) were suitable substrates for both EndoSd-D232M and EndoSz-D234M. The ADCC assay of related products, OBI-888-G2S2 and Herceptin-G2S2, showed that the remodeled homogeneous antibody, mAb-G2S2, has an increased relative activity ranging from 3 to 26 folds.Type: GrantFiled: June 27, 2019Date of Patent: December 21, 2021Assignee: OBI PHARMA, INC.Inventors: Cheng-Der Tony Yu, Yih Huang Hsieh, Yin-Cheng Hsieh, Teng-Yi Huang, Yi-Chien Tsai, Nan-Hsuan Wang, Pu-Ling Hu
-
Publication number: 20210024569Abstract: The present disclosure is related to the six isomer structures (OBI-821-1990-V1A, OBI-821-1990-V1B, OBI-821-1990-V2A, OBI-821-1990-V2B, OBI-821-1858-A, and OBI-821-1858-B) of isolated OBI-821 adjuvant and the method for evaluating the quality thereof. The method of the present disclosure adopts hydrophilic interaction liquid chromatography (HILIC) and reverse phase high performance liquid chromatography (RP-HPLC) either alone or in tandem and is able to separate the isomers of OBI-821 adjuvant in the consequent chromatography. Accordingly, the quality of OBI-821 adjuvant can be further evaluated.Type: ApplicationFiled: March 27, 2019Publication date: January 28, 2021Applicant: OBI PHARMA, INC.Inventors: Cheng-Der Tony Yu, Yih-Huang Hsieh, Wei Han Lee, Yu Chen Lin, Nan Hsuan Wang
-
Publication number: 20200062861Abstract: The present disclosure relates to novel glycosynthase enzymes for glycoprotein engineering and/or homogeneous antibody remodeling. The enzyme variants, termed EndoSd-D232M and EndoSz-D234M, contain the glycan conjugation and/or modification activity at the conserved N297 glycosylation site of Fc region of an exemplary antibody. It has been demonstrated that the glycosynthase activities of EndoSd-D232M and EndoSz-D234M can be applied to various mAbs targeting different receptors, including, but not limited to, Globo H, SSEA-4, SSEA-3 series of receptors (OBI-888; Globo H ganglioside), Herceptin (Her 2 receptor), Perjeta (Her 2 receptor) and Vectibix (EGFR receptor). It has been found that both mAb-GlcNAc and mAb-GlucNAc(F) were suitable substrates for both EndoSd-D232M and EndoSz-D234M. The ADCC assay of related products, OBI-888-G2S2 and Herceptin-G2S2, showed that the remodeled homogeneous antibody, mAb-G2S2, has an increased relative activity ranging from 3 to 26 folds.Type: ApplicationFiled: June 27, 2019Publication date: February 27, 2020Inventors: Cheng-Der Tony YU, Yih Huang HSIEH, Yin-Cheng HSIEH, Teng-Yi HUANG, Yi-Chien TSAI, Nan-Hsuan WANG, Pu-Ling HU
-
Publication number: 20200061169Abstract: The present invention provides vaccines comprising carbohydrate antigen conjugated to a diphtheria toxin (DT) as a carrier protein, wherein the ratio of the number of carbohydrate antigen molecule to the carrier protein molecule is higher than 5:1. Also disclosed herein is a novel saponin adjuvant and methods to inhibit cancer cells, by administering an effective amount of the vaccine disclose herein.Type: ApplicationFiled: November 1, 2019Publication date: February 27, 2020Inventors: Wei Han LEE, NAN-HSUAN WANG, CHUNG HAO CHANG, YIH-HUANG HSIEH, CHENG DER TONY YU, CHENG-CHI WANG, YU-HSIN LIN, YU-CHEN LIN, I-JU CHEN
-
Patent number: 10517936Abstract: The present invention provides vaccines comprising carbohydrate antigen conjugated to a diphtheria toxin (DT) as a carrier protein, wherein the ratio of the number of carbohydrate antigen molecule to the carrier protein molecule is higher than 5:1. Also disclosed herein is a novel saponin adjuvant and methods to inhibit cancer cells, by administering an effective amount of the vaccine disclose herein.Type: GrantFiled: January 6, 2014Date of Patent: December 31, 2019Assignee: OBI Pharma., Inc.Inventors: Wei Han Lee, Nan-Hsuan Wang, Chung Hao Chang, Yih-Huang Hsieh, Cheng Der Tony Yu, Cheng-Chi Wang, Yu-Hsin Lin, Yu-Chen Lin, I-Ju Chen
-
Publication number: 20180028629Abstract: The present disclosure encompasses immunogenic/therapeutic compositions including Globo series antigens (SSEA-4, Globo H or SSEA-3) glycoconjugates and therapeutic adjuvants (OBI-821 or OBI-834) as well as methods of making and using the same to treat proliferative diseases such as cancer. The therapeutic conjugates include an antigen linked to a carrier. In particular, the therapeutic conjugates include a SSEA-4, Globo H or SSEA-3 moiety and a KLH moiety subunit linked via a linker. The therapeutic compositions are in part envisaged to act as cancer vaccines (single valent, bi-valent or tri-valent vaccines) for boosting the body's natural ability to protect itself, through the immune system from dangers posed by damaged or abnormal cells such as cancer cells. Exemplary immune response can be characterized by reduction of the severity of disease, including but not limited to, prevention of disease, delay in onset of disease, decreased severity of symptoms, decreased morbidity and delayed mortality.Type: ApplicationFiled: July 27, 2017Publication date: February 1, 2018Inventors: Cheng-Der Tony YU, Peiwen YU, Kuo-Pao LAI, Wei-Han LEE, I-Ju CHEN, Shu-Yi LIN, Yih-Huang HSIEH
-
Publication number: 20160339089Abstract: The present disclosure encompasses immunogenic/therapeutic compositions including Globo H-KLH glycoconjugates (OBI-822) and/or therapeutic adjuvants (OBI-821/OBI-834) as well as methods of making and using the same to treat proliferative diseases such as cancer. The therapeutic conjugates include an antigen linked to a carrier. In particular the therapeutic conjugates include a Globo H moiety and a KLH moiety and/or a derivatized KLH moiety subunit optionally linked via a linker. The therapeutic compositions are in part envisaged to act as cancer vaccines for boosting the body's natural ability to protect itself, through the immune system from dangers posed by damaged or abnormal cells such as cancer cells. Exemplary immune response can be characterized by reduction of the severity of disease, including but not limited to, prevention of disease, delay in onset of disease, decreased severity of symptoms, decreased morbidity and delayed mortality.Type: ApplicationFiled: September 15, 2015Publication date: November 24, 2016Inventors: Cheng-Der Tony YU, Yih Huang HSIEH, I-Ju CHEN, Wei-Han LEE, Nan-Hsuan WANG
-
Publication number: 20150328299Abstract: The present invention provides vaccines comprising carbohydrate antigen conjugated to a diphtheria toxin (DT) as a carrier protein, wherein the ratio of the number of carbohydrate antigen molecule to the carrier protein molecule is higher than 5:1. Also disclosed herein is a novel saponin adjuvant and methods to inhibit cancer cells, by administering an effective amount of the vaccine disclose herein.Type: ApplicationFiled: January 6, 2014Publication date: November 19, 2015Inventors: WEI HAN LEE, NAN-HSUAN WANG, CHUNG HAO CHANG, Yih-Huang Hsieh, CHENG DER TONY YU, Cheng-Chi Wang, Yu-Hsin Lin, Yu-Chen Lin, I-Ju Chen