Patents by Inventor Hyung-Jun Ahn

Hyung-Jun Ahn 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: 8916685
    Abstract: The present invention relates to a fusion protein comprising small heat shock protein, a cage protein formed thereby, and novel use thereof, more particularly, a fusion protein comprising a small heat shock protein, a recognition site of a protease, and a histidine polymer, wherein the recognition site and the histidine polymer are sequentially linked to a carboxyl terminal of the small heat shock protein, a cage protein formed thereby, and novel use thereof. The fusion protein of the present invention, and a cage protein formed by the self-assembly properties of the fusion protein are not cytotoxic, and emits a fluorescence signal of about 20 to about 50 times higher comparing to a single peptide for the conventional molecular imaging, per unit protein. Additionally, cell permeability is very excellent, thereby to be effectively used as a biosensor or a bioactive material carrier.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: December 23, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Hyung-Jun Ahn, Ick-Chan Kwon, Kul-Won Choi
  • Patent number: 8889647
    Abstract: Recombinant proteins for siRNA delivery and a composition including same. These recombinant proteins include a p19 RNA binding protein and a target oriented peptide and can secure the stability of siRNAs from external attacks such as various degradation enzymes, have selective binding affinity to cancer cells by virtue of target-oriented peptides having various cancer cells as their target, and silence target genes by effectively delivering the siRNAs to cells and biological tissues by the release of the siRNAs to the cytoplasms after the cell penetration thereof. Therefore, they are expected to be effectively employed as siRNA delivery vehicles for siRNA therapeutic agents, cell-based drug screening compositions and research.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: November 18, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Hyung-Jun Ahn, Ick-Chan Kwon, Kui-Won Choi
  • Publication number: 20140045914
    Abstract: This invention relates to a recombinant protein for siRNA delivery and a composition comprising the same. The recombinant proteins for siRNA delivery of the invention can secure the stability of siRNAs from external attacks such as various degradation enzymes, have selective binding affinity to cancer cells by virtue of target-oriented peptides having various cancer cells as their target, and silence target genes by effectively delivering the siRNAs to cells and biological tissues by the release of the siRNAs to the cytoplasms after the cell penetration thereof. Therefore, they are expected to be effectively employed as siRNA delivery vehicles for siRNA therapeutic agents, cell-based drug screening compositions and research.
    Type: Application
    Filed: January 16, 2013
    Publication date: February 13, 2014
    Inventors: Hyung-Jun AHN, Ick-Chan KWON, Kui-Won CHOI
  • Patent number: 8541378
    Abstract: The present invention relates to recombinant albumins fused with poly-cysteine peptide and methods for preparing the same, more precisely recombinant albumins in which cysteines that can be used for drug binding are amplified at N-terminal and C-terminal of the albumin and methods for preparing the same. The recombinant albumin of the present invention demonstrates improved albumin-drug conjugation efficiency when it is used for drug delivery system, indicating that it can effectively deliver a large amount of drug to a target tissue. At the same time, the recombinant albumin of the present invention can be used as an excellent drug deliverer with reduced side effects, compared with the conventional albumin carriers, by regulating the amount of drug conjugated to each unit of albumin by regulating the number of cysteine fused thereto.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: September 24, 2013
    Assignee: Korea Institute of Science and Technology
    Inventors: Hyung Jun Ahn, Ick Chan Kwon, Kuiwon Choi, Kwangmyeng Kim, Inchan Youn, Sehoon Kim
  • Publication number: 20130230562
    Abstract: The present invention relates to a fusion protein comprising small heat shock protein, a cage protein formed thereby, and novel use thereof, more particularly, a fusion protein comprising a small heat shock protein, a recognition site of a protease, and a histidine polymer, wherein the recognition site and the histidine polymer are sequentially linked to a carboxyl terminal of the small heat shock protein, a cage protein formed thereby, and novel use thereof. The fusion protein of the present invention, and a cage protein formed by the self-assembly properties of the fusion protein are not cytotoxic, and emits a fluorescence signal of about 20 to about 50 times higher comparing to a single peptide for the conventional molecular imaging, per unit protein. Additionally, cell permeability is very excellent, thereby to be effectively used as a biosensor or a bioactive material carrier.
    Type: Application
    Filed: June 7, 2011
    Publication date: September 5, 2013
    Inventors: Hyung-Jun Ahn, Ick-Chan Kwon, Kul-Won Choi
  • Publication number: 20130150287
    Abstract: The present invention relates to a recombinant protein for siRNA delivery, which allows the efficient intracellular and in vivo delivery of siRNA. More particularly, the present invention relates to a recombinant protein that allows a siRNA binding protein to be located in the interior cavity of a capsid protein of HBV (Hepatitis B virus), in which siRNAs of interest bind to the siRNA binding protein to be encapsulated within the capsid shell, thereby providing stability against the external attack such as nucleases and achieving the efficient intracellular and in vivo delivery of siRNA by its release into the cytosolic space after cell uptake.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 13, 2013
    Applicant: Korea Institute of Science and Technology
    Inventors: Hyung-Jun AHN, Ick-Chan Kwon, Kui-Won Choi
  • Publication number: 20100310468
    Abstract: The present invention relates to recombinant albumins fused with poly-cysteine peptide and methods for preparing the same, more precisely recombinant albumins in which cysteines that can be used for drug binding are amplified at N-terminal and C-terminal of the albumin and methods for preparing the same. The recombinant albumin of the present invention demonstrates improved albumin-drug conjugation efficiency when it is used for drug delivery system, indicating that it can effectively deliver a large amount of drug to a target tissue. At the same time, the recombinant albumin of the present invention can be used as an excellent drug deliverer with reduced side effects, compared with the conventional albumin carriers, by regulating the amount of drug conjugated to each unit of albumin by regulating the number of cysteine fused thereto.
    Type: Application
    Filed: June 2, 2010
    Publication date: December 9, 2010
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyung Jun AHN, Ick Chan KWON, Kuiwon CHOI, Kwangmyeng KIM, Inchan YOUN, Sehoon KIM
  • Publication number: 20100184146
    Abstract: The present invention provides a plasmid for expressing a thioredoxin fusion protein comprising thioredoxin as a fusion partner, an E. coli cell transformed with the plasmid, and an efficient method for producing a target protein using the E. coli cell. The method according to the present invention can easily remove thioredoxin from thioredoxin fusion protein, so that can produce a target protein of interest in pure and large quantities in the field of medicine and bioengineering.
    Type: Application
    Filed: August 24, 2009
    Publication date: July 22, 2010
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hee-Chul Ahn, Hyung Jun Ahn, Dong Yun Shin, Jong Soo Lim, Dae-Ro Ahn
  • Patent number: 7422289
    Abstract: The present invention relates to a frame panel having an improved reinforcing pattern. The frame panel includes a panel body having a front plate and a rear plate, which are integrally formed as a single body through a blowing process. The front plate has vertical groove patterns and horizontal groove patterns on the outside area except for the central area thereof, while the rear plate has vertical groove patterns and horizontal groove patterns on each of the central area and the outside area thereof, thus forming rectangular reinforcing groove patterns, with a diagonal groove pattern diagonally extending upwards from the lower end of a side of the rectangular reinforcing groove pattern provided on the outside area of the rear plate such that the diagonal groove pattern passes through the rectangular reinforcing groove pattern provided on the central area of the rear plate.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: September 9, 2008
    Assignee: LG Chem, Ltd.
    Inventors: Hee-Deog Kim, Hyung-Jun Ahn, In-Se Yoon
  • Publication number: 20070046069
    Abstract: The present invention relates to a frame panel having an improved reinforcing pattern. The frame panel includes a panel body having a front plate and a rear plate, which are integrally formed as a single body through a blowing process. The front plate has vertical groove patterns and horizontal groove patterns on the outside area except for the central area thereof, while the rear plate has vertical groove patterns and horizontal groove patterns on each of the central area and the outside area thereof, thus forming rectangular reinforcing groove patterns, with a diagonal groove pattern diagonally extending upwards from the lower end of a side of the rectangular reinforcing groove pattern provided on the outside area of the rear plate such that the diagonal groove pattern passes through the rectangular reinforcing groove pattern provided on the central area of the rear plate.
    Type: Application
    Filed: April 26, 2006
    Publication date: March 1, 2007
    Inventors: Hee-Deog Kim, Hyung-Jun Ahn, In-Se Yoon
  • Publication number: 20060144014
    Abstract: The present invention relates to a plastic panel, and more particularly, to a plastic panel which comprises inner and outer panels wherein a bonding groove to be coated with an adhesive is formed on any one of the inner and outer panels. According to a preferred embodiment of the present invention, the bonding groove is formed on any one of the inner and outer panels, while a protrusion is formed on a bonding surface of the other of the inner and outer panels. Accordingly, since the bonding groove is bonded to the bonding surface of the inner or outer panel, the bonding groove can serve as a guide when the adhesive is applied. Thus, the adhesive can be applied at a uniform thickness to correct positions even though it is manually applied, and even an adhesive with certain fluidity can be prevented from leaking to the outside.
    Type: Application
    Filed: January 5, 2006
    Publication date: July 6, 2006
    Inventors: In-Se Yoon, Hyung-Jun Ahn, Hee-Deog Kim