Patents by Inventor Leaf Huang

Leaf Huang 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: 7803398
    Abstract: A targeting delivery system. The targeted delivery system includes a carrier for a drug and a targeted ligand modifying the carrier to target the encapsulated drug to a sigma receptor over-expressed cell.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: September 28, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Shyh-Dar Li, Ae-June Wang, Leaf Huang
  • Publication number: 20100184953
    Abstract: Novel stable, concentrated, biologically active and ready-to-use lipid-comprising drug delivery complexes and methods for their production are described. The biological activity of the complexes produced are comparable to the formulations prepared according to the prior art admixture method and upon purification, the complexes produced by the method of this invention are 50 to 500 fold more concentrated than the complexes formed by admixture. The method described herein provides for the large scale production of lipid-comprising drug delivery systems useful for gene therapy and other applications.
    Type: Application
    Filed: December 14, 2009
    Publication date: July 22, 2010
    Applicant: University of Pittsburgh
    Inventors: Leaf HUANG, Xiang GAO, Frank L. SORGI
  • Patent number: 7662793
    Abstract: A nucleic acid is provided comprising an expression cassette which includes transcription control sequences of a member of a class of Pol III-transcribed genes in which no transcribed portion of the Pol III gene is required for transcription of the gene. In the expression cassette, the transcribed 5? hairpin structure of the Pol III gene is deleted. The transcription control sequences are operably linked to a sequence of an EGFR gene in an antisense orientation suitable for decreasing expression of EGFR in the cell when transcribed. Lastly, a method for decreasing expression of EGFR in cells is provided that includes the step of contacting target cells either parenterally or directly into the tumor or tissue adjacent to the tumor cells with the nucleic acid of the present invention.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: February 16, 2010
    Assignee: University of Pittsburgh of the Commonwealth System of Higher Education
    Inventors: Yukai He, Jennifer R. Grandis, Leaf Huang
  • Patent number: 7655468
    Abstract: Novel stable, concentrated, biologically active and ready-to-use lipid-comprising drug delivery complexes and methods for their production are described. The biological activity of the complexes produced are comparable to the formulations prepared according to the prior art admixture method and upon purification, the complexes produced by the method of this invention are 50 to 500 fold more concentrated than the complexes formed by admixture. The method described herein provides for the large scale production of lipid-comprising drug delivery systems useful for gene therapy and other applications.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: February 2, 2010
    Assignee: University of Pittsburgh
    Inventors: Leaf Huang, Xiang Gao, Frank L. Sorgi
  • Publication number: 20090017057
    Abstract: The present invention provides compositions and methods for stimulating an immune response using cationic lipids alone or in combination with antigens.
    Type: Application
    Filed: March 17, 2008
    Publication date: January 15, 2009
    Applicant: PDS BIOTECHNOLOGY CORPORATION
    Inventors: Weihsu Chen, Weili Yan, Kenya Toney, Gregory Conn, Frank Bedu-Addo, Leaf Huang
  • Publication number: 20080153166
    Abstract: Novel stable, concentrated, biologically active and ready-to-use lipid-comprising drug delivery complexes and methods for their production are described. The biological activity of the complexes produced are comparable to the formulations prepared according to the prior art admixture method and upon purification, the complexes produced by the method of this invention are 50 to 500 fold more concentrated than the complexes formed by admixture. The method described herein provides for the large scale production of lipid-comprising drug delivery systems useful for gene therapy and other applications.
    Type: Application
    Filed: November 20, 2007
    Publication date: June 26, 2008
    Inventors: Leaf Huang, Xiang Gao, Frank L. Sorgi
  • Publication number: 20080131455
    Abstract: The present invention provides antigen delivery compositions and methods of using same to prevent or to treat cancers and other infectious diseases.
    Type: Application
    Filed: November 26, 2007
    Publication date: June 5, 2008
    Applicant: PDS BIOTECHNOLOGY CORPORATION
    Inventors: Leaf Huang, Zhengrong Cui, John Dileo, Su-Ji Han, Dileep P. Vangasseri
  • Patent number: 7361640
    Abstract: Novel stable, concentrated, biologically active and ready-to-use lipid-comprising drug delivery complexes and methods for their production are described. The biological activity of the complexes produced are comparable to the formulations prepared according to the prior art admixture method and upon purification, the complexes produced by the method of this invention are 50 to 500 fold more concentrated than the complexes formed by admixture. The method described herein provides for the large scale production of lipid-comprising drug delivery systems useful for gene therapy and other applications.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: April 22, 2008
    Assignee: University of Pittsburgh
    Inventors: Leaf Huang, Xiang Gao, Frank L. Sorgi
  • Patent number: 7335509
    Abstract: Novel stable, concentrated, biologically active and ready-to-use lipid-comprising drug delivery complexes and methods for their production are described. The biological activity of the complexes produced are comparable to the formulations prepared according to the prior art admixture method and upon purification, the complexes produced by the method of this invention are 50 to 500 fold more concentrated than the complexes formed by admixture. The method described herein provides for the large scale production of lipid-comprising drug delivery systems useful for gene therapy and other applications.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: February 26, 2008
    Assignee: University of Pittsburgh
    Inventors: Leaf Huang, Xiang Gao, Frank L. Sorgi
  • Patent number: 7303881
    Abstract: The present invention provides antigen delivery compositions and methods of using same to prevent or to treat cancers and other infectious diseases.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: December 4, 2007
    Assignee: PDS Biotechnology Corporation
    Inventors: Leaf Huang, Zhengrong Cui, John Dileo, Su-Ji Han, Dileep P. Vangasseri
  • Publication number: 20070122466
    Abstract: The present invention provides pharmaceutical compositions and methods for the instillation of lipid vehicles comprised of liposomes containing sphingomyelin or sphingomyelin metabolites to prevent, manage, ameliorate and/or treat disorders involving neuropathic pain and aberrant muscle contractions, such as what occurs in bladder hyperactivity disorders such as interstitial cystitis (IC) in animals or humans in need thereof. Also provided is a liposome-based delivery of drugs, e.g., antibiotics, pain treatments and anticancer agents, to the bladder, genitourinary tract, gastrointestinal system, pulmonary system and other organs or body systems. In particular, liposome-based delivery of vanilloid compounds, such as resiniferatoxin, capsaicin, or tinyatoxin and toxins, such as botulinum toxin is provided for the treatment of bladder conditions, including pain, inflammation, incontinence and voiding dysftunction.
    Type: Application
    Filed: October 11, 2006
    Publication date: May 31, 2007
    Applicant: University of Pittsburgh
    Inventors: Michael Chancellor, Pradeep Tyagi, Matthew Fraser, Yao-Chi Chuang, William de Groat, Leaf Huang, Naoki Yoshimura
  • Publication number: 20070003610
    Abstract: The present invention relates to compositions and methods for the administration of lipid-based vehicles to treat various disorders, including bladder inflammation, infection, dysfunction, and cancer. In various aspects, the compositions and methods of the invention are useful for prolonged delivery of drugs, e.g., antibiotics, pain treatments, and anticancer agents, to the bladder, genitourinary tract, gastrointestinal system, pulmonary system, and other organs or body systems. In particular, the present invention relates to liposome-based delivery of vanilloid compounds, such as resiniferatoxin, capsaicin, or tinyatoxin, and toxins, such as botulinum toxin, for the treatment of bladder conditions, including pain, inflammation, incontinence, and voiding dysfunction. Further related are methods of using these vehicles alone or in conjunction with antibodies, e.g., uroplakin antibodies, to improve duration of liposome attachment, and provide a long-term intravesical drug delivery platform.
    Type: Application
    Filed: May 22, 2006
    Publication date: January 4, 2007
    Applicant: University of Pittsburgh
    Inventors: Michael Chancellor, Matthew Fraser, Yao-Chi Chuang, William de Groat, Leaf Huang, Naoki Yoshimura
  • Patent number: 7063860
    Abstract: The present invention relates to compositions and methods for the administration of lipid-based vehicles to treat various disorders, including bladder inflammation, infection, dysfunction, and cancer. In various aspects, the compositions and methods of the invention are useful for prolonged delivery of drugs, e.g., antibiotics, pain treatments, and anticancer agents, to the bladder, genitourinary tract, gastrointestinal system, pulmonary system, and other organs or body systems. In particular, the present invention relates to liposome-based delivery of vanilloid compounds, such as resiniferatoxin, capsaicin, or tinyatoxin, and toxins, such as botulinum toxin, for the treatment of bladder conditions, including pain, inflammation, incontinence, and voiding dysfunction. Further related are methods of using these vehicles alone or in conjunction with antibodies, e.g., uroplakin antibodies, to improve duration of liposome attachment, and provide a long-term intravesical drug delivery platform.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: June 20, 2006
    Assignee: University of Pittsburgh
    Inventors: Michael B. Chancellor, Matthew O. Fraser, Yao-Chi Chuang, William C. de Groat, Leaf Huang, Naoki Yoshimura
  • Publication number: 20060062841
    Abstract: The present invention provides for liposomal vectors which inhibit inflammation and/or enhance expression of transferred genes. It is based, at least in part, of the discovery that vectors comprising a nucleic acid carrying a gene of interest and a cationic liposome containing an immunosuppressive agent induce lower levels of inflammatory cytokine relative to conventional lipolex vectors, as well as on the discovery that a component may be incorporated into the liposome which enhances expression of the gene of interest.
    Type: Application
    Filed: September 1, 2005
    Publication date: March 23, 2006
    Inventors: Leaf Huang, Feng Liu
  • Publication number: 20060008472
    Abstract: The present invention provides antigen delivery compositions and methods of using same to prevent or to treat cancers and other infectious diseases. More particularly, the present invention provides a lipid-protamine-DNA (LPD) vaccine delivery system and methods of using such LPD vaccine delivery system for the prevention and treatment of cancer and other infectious diseases.
    Type: Application
    Filed: May 2, 2005
    Publication date: January 12, 2006
    Inventors: Leaf Huang, Zhengrong Cui, John Dileo, Su-Ji Han, Dileep Vangasseri
  • Patent number: 6927213
    Abstract: The present invention discloses compounds which are cationic cholesteryl derivatives having a nitrogen-containing ring structure as their polar head group. These compounds are useful for delivering biologically active substances to cells and for transfecting nucleic acids into cells.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: August 9, 2005
    Assignee: University of Pittsburgh
    Inventors: Hemant M. Deshmukh, Leaf Huang
  • Publication number: 20050152964
    Abstract: Novel stable, concentrated, biologically active and ready-to-use lipid-comprising drug delivery complexes and methods for their production are described. The biological activity of the complexes produced are comparable to the formulations prepared according to the prior art admixture method and upon purification, the complexes produced by the method of this invention are 50 to 500 fold more concentrated than the complexes formed by admixture. The method described herein provides for the large scale production of lipid-comprising drug delivery systems useful for gene therapy and other applications.
    Type: Application
    Filed: December 15, 2004
    Publication date: July 14, 2005
    Inventors: Leaf Huang, Xiang Gao, Frank Sorgi, Ralph Paul, David Sloane, Aaron Loomis
  • Publication number: 20050142184
    Abstract: This invention discloses emulsion formulations comprising an aqueous carrier and the following components: triglyceride, cholesterol, phospholipid, at least one charged lipid, at least one hydrophilic biologically active molecule and, optionally, cholesteryl ester, and/or apoprotein; methods of preparing these emulsions; and the use of these emulsions as vehicles for the delivery of hydrophilic biologically active molecules to cells.
    Type: Application
    Filed: March 2, 2005
    Publication date: June 30, 2005
    Inventors: Leaf Huang, Toshifumi Hara
  • Publication number: 20050142181
    Abstract: A targeting delivery system. The targeted delivery system includes a carrier for a drug and a targeted ligand modifying the carrier to target the encapsulated drug to a sigma receptor over-expressed cell.
    Type: Application
    Filed: December 23, 2004
    Publication date: June 30, 2005
    Inventors: Shyh-Dar Li, Ae-June Wang, Leaf Huang
  • Patent number: 6890557
    Abstract: This invention discloses emulsion formulations comprising an aqueous carrier and the following components: triglyceride, cholesterol, phospholipid, at least one charged lipid, at least one hydrophilic biologically active molecule and, optionally, cholesteryl ester, and/or apoprotein; methods of preparing these emulsions; and the use of these emulsions as vehicles for the delivery of hydrophilic biologically active molecules to cells.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: May 10, 2005
    Assignee: University of Pittsburgh
    Inventors: Leaf Huang, Toshifumi Hara