Patents by Inventor Hung-sen Lai

Hung-sen Lai 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: 8513187
    Abstract: The invention provides compounds and methods for inhibiting proteases. One aspect of the invention features pro-soft inhibitors which react with an activating protease to release an active inhibitor moiety in proximity to a target protease. In certain instances, compounds inhibit proteasomes and/or post-proline cleaving enzymes (PPCE), such as dipeptidyl peptidase IV. The compounds of the invention provide a better therapeutic index, owing in part to reduced toxicity and/or improved specificity for the targeted protease. Another aspect of the invention provides for the use of the disclosed compounds for treating Type II diabetes, insulin resistance, glucose intolerance, hyperglycemia, hypoglycemia, hyperinsulinemia, obesity, hyperlipidemia, or hyperlipoproteinemia.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: August 20, 2013
    Assignee: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-sen Lai, Wengen Wu
  • Publication number: 20130150292
    Abstract: The invention provides compounds and methods for inhibiting proteases. One aspect of the invention features pro-soft inhibitors which react with an activating protease to release an active inhibitor moiety in proximity to a target protease. In certain instances, compounds inhibit proteasomes and/or post-proline cleaving enzymes (PPCE), such as dipeptidyl peptidase IV. The compounds of the invention provide a better therapeutic index, owing in part to reduced toxicity and/or improved specificity for the targeted protease.
    Type: Application
    Filed: September 14, 2012
    Publication date: June 13, 2013
    Applicant: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-Sen Lai, Wengen Wu
  • Patent number: 8450316
    Abstract: Disclosed are 6-(morpholinoalkyl)-substituted pyridines, and pharmaceutically acceptable salts and prodrugs thereof, that are active against a range of mammalian therapeutic indications.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: May 28, 2013
    Assignees: Trustees of Tufts College, Arisaph Pharmaceuticals, Inc.
    Inventors: William W. Bachovchin, Hung-sen Lai, Daniel Philip O'Connell, Wengen Wu, Christopher P. Kiritsy
  • Patent number: 8377971
    Abstract: One aspect of the present invention relates to substituted pyridines and pharmaceutically acceptable salts thereof that are active against a range of mammalian maladies. Another aspect of the invention relates to a pharmaceutical composition, comprising a compound of the present invention or a pharmaceutically acceptable salt thereof; and a pharmaceutically acceptable excipient. The present invention also relates to methods of treating a range of mammalian maladies or conditions, including but not limited to hyperlipidemia, hypercholesterolemia, atherosclerosis, coronary artery disease, congestive heart failure, cardiovascular disease, hypertension, coronary heart disease, angina, pellagra, Hartnup's syndrome, carcinoid syndrome, arterial occlusive disease, obesity, hypothyroidism, vasoconstriction, osteoarthritis, rheumatoid arthritis, diabetes, Alzheimer's disease, lipodystrophy, or dyslipidemia, raising serum high-density lipoprotein (HDL) levels, and lowering serum low-density lipoprotein (LDL) levels.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: February 19, 2013
    Assignee: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-Sen Lai
  • Patent number: 8268880
    Abstract: The invention provides compounds and methods for inhibiting proteases. One aspect of the invention features pro-soft inhibitors which react with an activating protease to release an active inhibitor moiety in proximity to a target protease. In certain instances, compounds inhibit proteasomes and/or post-proline cleaving enzymes (PPCE), such as dipeptidyl peptidase IV. The compounds of the invention provide a better therapeutic index, owing in part to reduced toxicity and/or improved specificity for the targeted protease.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: September 18, 2012
    Assignee: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-Sen Lai, Wengen Wu
  • Publication number: 20120178677
    Abstract: The invention provides compounds and methods for inhibiting proteases. One aspect of the invention features pro-soft inhibitors which react with an activating protease to release an active inhibitor moiety in proximity to a target protease. In certain instances, compounds inhibit proteasomes and/or post-proline cleaving enzymes (PPCE), such as dipeptidyl peptidase IV. The compounds of the invention provide a better therapeutic index, owing in part to reduced toxicity and/or improved specificity for the targeted protease. Another aspect of the invention provides for the use of the disclosed compounds for treating Type II diabetes, insulin resistance, glucose intolerance, hyperglycemia, hypoglycemia, hyperinsulinemia, obesity, hyperlipidemia, or hyperlipoproteinemia.
    Type: Application
    Filed: March 1, 2010
    Publication date: July 12, 2012
    Applicant: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-sen Lai, Wengen Wu
  • Publication number: 20120130044
    Abstract: The present invention relates to compositions of peptide and polypeptide analogs that are resistant to proteolysis, pharmaceutical uses thereof, and methods of preparation thereof.
    Type: Application
    Filed: August 9, 2011
    Publication date: May 24, 2012
    Applicant: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-sen Lai, David George Sanford
  • Publication number: 20120101062
    Abstract: The present invention relates to inhibitors of lipases, such as inhibitors of endothelial lipase, as well as pharmaceutical compositions thereof, and methods for using such inhibitors. The prototype of these inhibitors has lipophilic portion and an electrophilic site.
    Type: Application
    Filed: October 28, 2011
    Publication date: April 26, 2012
    Applicant: Trustees of Tuffs College
    Inventors: William W. Bachovchin, Hung-Sen Lai, Daniel P. O'Connell
  • Publication number: 20120077807
    Abstract: Disclosed are 6-(morpholinoalkyl)-substituted pyridines, and pharmaceutically acceptable salts and prodrugs thereof, that are active against a range of mammalian therapeutic indications.
    Type: Application
    Filed: June 24, 2011
    Publication date: March 29, 2012
    Applicant: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-sen Lai, Daniel P. O'Connell, Wengen Wu, Christopher P. Kiritsy
  • Publication number: 20120077779
    Abstract: Disclosed are peptide-based compounds that include boronic acid or cyano functionality, which efficiently and selectively inhibit fibroblast activation protein alpha. Among other therapeutic utilities, the peptide-based compounds may be useful for the treatment of cancer.
    Type: Application
    Filed: July 6, 2011
    Publication date: March 29, 2012
    Applicant: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-Sen Lai
  • Publication number: 20120077808
    Abstract: Disclosed are heterocyclylalkyl-substituted and heteroaralkyl-substituted pyridines, and pharmaceutically acceptable salts and prodrugs thereof, that are active against a range of mammalian therapeutic indications.
    Type: Application
    Filed: June 24, 2011
    Publication date: March 29, 2012
    Applicant: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-sen Lai, Daniel P. O'Connell, Wengen Wu, Christopher P. Kiritsy
  • Publication number: 20110245173
    Abstract: The present invention generally provides polypeptide analogues of GLP-‘(9-34) and GLP-1 (9-36) that have increased in vivo half-lives resulting from reduced susceptibility to proteolytic enzymes. Other aspects of the invention relate to methods of using the polypeptide analogues described herein for treating cardiac dysfunction and other heart-related maladies. Yet another aspect of the present invention relates lo formulations comprising the polypeptide analogues described herein.
    Type: Application
    Filed: June 3, 2009
    Publication date: October 6, 2011
    Inventors: William W. Bachovchin, Hung-sen Lai, David George Sanford
  • Publication number: 20110218142
    Abstract: The present invention relates to inhibitors of post-proline cleaving enzymes, such as inhibitors of dipeptidyl peptidase IV, as well as pharmaceutical compositions thereof, and methods for using such inhibitors. In particular, the inhibitors of the present invention are improved over those in the prior art by selection of particular classes of sidechains in the P1 and/or P2 position of the inhibitor that contain a carboxylic acid moiety. The compounds of the present invention can have a better therapeutic index, owing in part to reduced toxicity and/or improved specificity for the targeted protease.
    Type: Application
    Filed: May 16, 2011
    Publication date: September 8, 2011
    Applicant: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-sen Lai, Wengen Wu
  • Patent number: 7998997
    Abstract: Disclosed are peptide-based compounds that include boronic acid or cyano functionality, which efficiently and selectively inhibit fibroblast activation protein alpha. Among other therapeutic utilities, the peptide-based compounds may be useful for the treatment of cancer.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: August 16, 2011
    Assignee: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-Sen Lai
  • Patent number: 7994121
    Abstract: The present invention relates to compositions of peptide and polypeptide analogs that are resistant to proteolysis, pharmaceutical uses thereof, and methods of preparation thereof.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: August 9, 2011
    Assignee: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-Sen Lai, David George Sanford
  • Publication number: 20100184706
    Abstract: One aspect of the present invention relates to compounds for delivering chemotherapeutic agents to cancerous cells to reduce discomfort and deleterious side effects associated with systemic administration of such agents. Another aspect of the invention relates to methods of treating a subject with cancer by administering a therapeutically effective amount of a chemotherapeutic agent that predominately targets cancerous cells over healthy cells. Additionally, one aspect of the present invention relates to methods of inhibiting the life-cycle of a cancerous cell, as well preparing a chemotherapeutic prodrug.
    Type: Application
    Filed: March 20, 2008
    Publication date: July 22, 2010
    Inventors: William W. Bachovchin, Hung-Sen Lai
  • Publication number: 20100105629
    Abstract: One aspect of the present invention relates to inhibitors of post-pro line protease enzymes, such as inhibitors of dipeptidyl peptidase IV (DPIV). Other aspects of the invention relate to pharmaceutical compositions and methods of use thereof. In certain embodiments, a DPIV inhibitor comprises a carboxylic acid-containing side chain moiety at the P1 or P2 position or both. The inhibitors of the invention should possess improved specificity for the targeted protease and low toxicity.
    Type: Application
    Filed: March 24, 2008
    Publication date: April 29, 2010
    Inventors: William W. Bachovchin, Hung-Sen Lai
  • Publication number: 20100105753
    Abstract: One aspect of the present invention relates to synthetic peptide derivatives that inhibit fibroblast activation protein ? (FAP) activity. Another aspect of the invention relates to methods for treating a mammal suffering from cancer by administering a therapeutically effective amount of synthetic peptides derivatives that inhibit FAP activity.
    Type: Application
    Filed: March 20, 2008
    Publication date: April 29, 2010
    Applicant: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-Sen Lai
  • Publication number: 20090312355
    Abstract: One aspect of the present invention relates to substituted pyridines and pharmaceutically acceptable salts thereof that are active against a range of mammalian maladies. Another aspect of the invention relates to a pharmaceutical composition, comprising a compound of the present invention or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable excipient. The present invention also relates to methods of treating a range of mammalian maladies or conditions, including but not limited to hyperlipidemia, hypercholesterolemia, atherosclerosis, coronary artery disease, congestive heart failure, cardiovascular disease, hypertension, coronary heart disease, angina, pellagra, Hartnup's syndrome, carcinoid syndrome, arterial occlusive disease, obesity, hypothyroidism, vasoconstriction, osteoarthritis, rheumatoid arthritis, diabetes, Alzheimer's disease, lipodystrophy, or dyslipidemia, raising serum high-density lipoprotein (HDL) levels, and lowering serum low-density lipoprotein (LDL) levels.
    Type: Application
    Filed: August 1, 2007
    Publication date: December 17, 2009
    Applicant: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-Sen Lai
  • Publication number: 20090221818
    Abstract: Disclosed are peptide-based compounds that include boronic acid or cyano functionality, which efficiently and selectively inhibit fibroblast activation protein alpha. Among other therapeutic utilities, the peptide-based compounds may be useful for the treatment of cancer.
    Type: Application
    Filed: July 5, 2006
    Publication date: September 3, 2009
    Applicant: Trustees of Tufts College
    Inventors: William W. Bachovchin, Hung-Sen Lai