Patents by Inventor Sung Keun Kang

Sung Keun Kang 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: 11932874
    Abstract: The present invention relates to a method of culturing mesenchymal stem cells using gamma-irradiated serum, and more particularly to a method for culturing mesenchymal stem cells, which can improve the adhesion and proliferation rate of stem cells using a medium containing gamma-irradiated serum and an antioxidant. The method for culturing mesenchymal stem cells according to the present invention can restore the adhesion and proliferation rate of stem cells when culturing the stem cells using gamma-irradiated FBS, which is safe from contamination sources but reduces the efficiency of adhesion and proliferation of the cells. Thus, the inventive method is useful for the production of stem cells for cell therapy.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: March 19, 2024
    Assignees: R BIO CO., LTD., NATURECELL CO., LTD.
    Inventors: Jeong Chan Ra, Sung Keun Kang, Eun-Young Kim
  • Patent number: 11912674
    Abstract: The present invention provides methods for treating or ameliorating metabolic diseases, cholestatic liver diseases, or organ fibrosis, which comprises administering to a subject a therapeutically effective amount of a pharmaceutical composition comprising an isoxazole derivative, a racemate, an enantiomer, or a diastereoisomer thereof, or a pharmaceutically acceptable salt of the derivative, the racemate, the enantiomer, or the diastereoisomer.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: February 27, 2024
    Assignee: IL DONG PHARMACEUTICAL CO., LTD.
    Inventors: Jae-Hoon Kang, Hong-Sub Lee, Yoon-Suk Lee, Jin-Ah Jeong, Sung-Wook Kwon, Jeong-Guen Kim, Kyung-Sun Kim, Dong-Keun Song, Sun-Young Park, Kyeo-Jin Kim, Ji-Hye Choi, Hey-Min Hwang
  • Publication number: 20210040453
    Abstract: The present invention relates to a method for preparing stem cells having a size suitable for intravascular administration, and preferably to a method for preparing stem cells with a diameter ranging from 11-16 ?m. Additionally, the present invention relates to media composition for preparing stem cells having a size suitable for intravascular administration. According to the present invention, stem cells having a size suitable for intravascular administration can be prepared such that stem cells administered into a vein can stably reach a target tissue, and thus can more efficiently increase efficacy displaying activity, thereby innovatively enhancing the efficacy of cell therapy using stem cells.
    Type: Application
    Filed: October 26, 2020
    Publication date: February 11, 2021
    Applicants: K-STEMCELL CO., LTD
    Inventors: Jeong Chan RA, Sung Keun KANG, Il Seob SHIN
  • Patent number: 10815459
    Abstract: The present invention relates to a method for preparing stem cells having a size suitable for intravascular administration, and preferably to a method for preparing stem cells with a diameter ranging from 11-16 ?m. Additionally, the present invention relates to media composition for preparing stem cells having a size suitable for intravascular administration. According to the present invention, stem cells having a size suitable for intravascular administration can be prepared such that stem cells administered into a vein can stably reach a target tissue, and thus can more efficiently increase efficacy displaying activity, thereby innovatively enhancing the efficacy of cell therapy using stem cells.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: October 27, 2020
    Assignees: K-STEMCELL CO., LTD.
    Inventors: Jeong Chan Ra, Sung Keun Kang, Il Seob Shin
  • Publication number: 20190359942
    Abstract: The present invention relates to a method of culturing mesenchymal stem cells using gamma-irradiated serum, and more particularly to a method for culturing mesenchymal stem cells, which can improve the adhesion and proliferation rate of stem cells using a medium containing gamma-irradiated serum and an antioxidant. The method for culturing mesenchymal stem cells according to the present invention can restore the adhesion and proliferation rate of stem cells when culturing the stem cells using gamma-irradiated FBS, which is safe from contamination sources but reduces the efficiency of adhesion and proliferation of the cells. Thus, the inventive method is useful for the production of stem cells for cell therapy.
    Type: Application
    Filed: May 24, 2019
    Publication date: November 28, 2019
    Inventors: Jeong Chan RA, Sung Keun KANG, Eun-Young KIM
  • Patent number: 10287551
    Abstract: The present disclosure relates to a medium composition for culturing stem cells, and more specifically, to a medium composition for culturing mesenchymal stem cells, in which the medium composition includes a basic medium in which various quasi-completed mediums (DMEM, ?-MEM, IMDM, F12, and DMEM/F12) are mixed, L-ascorbic acid 2-phosphate, fetal bovine serum, basic fibroblast growth factors (b-FGF), insulin, N-acetyl-L-cysteine, calcium chloride, and hydrocortisone. According to the present disclosure, it is capable of improving proliferation ability and differentiation ability of the mesenchymal stem cells, and is capable of producing cell therapy products more economically using the mesenchymal stem cells by enabling the mesenchymal stem cells to be cultured at a low price compared to the existing culturing methods.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: May 14, 2019
    Assignee: R BIO CO., LTD.
    Inventors: Jeong Chan Ra, Sung Keun Kang, Sung-Min Kim, Mi Sook Lee, Jin Hwa Lee, Soon Ae Kwon
  • Patent number: 9982234
    Abstract: The present invention relates to a medium composition for enhancing the self-renewal ability of stem cells, which contains apelin, and a method of culturing stem cells using the medium composition. According to the present invention, stem cells can be effectively cultured to proliferate without changing the characteristics of the cells, and the telomerase activity of stem cells can be increased. Thus, the efficacy of cell therapy based on stem cells can be significantly improved.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: May 29, 2018
    Assignees: R BIO CO., LTD
    Inventors: Jeong-Chan Ra, Sung Keun Kang, Jung Youn Jo
  • Publication number: 20170313986
    Abstract: The present disclosure relates to a medium composition for culturing stem cells, and more specifically, to a medium composition for culturing mesenchymal stem cells, in which the medium composition includes a basic medium in which various quasi-completed mediums (DMEM, ?-MEM, IMDM, F12, and DMEM/F12) are mixed, L-ascorbic acid 2-phosphate, fetal bovine serum, basic fibroblast growth factors (b-FGF), insulin, N-acetyl-L-cysteine, calcium chloride, and hydrocortisone. According to the present disclosure, it is capable of improving proliferation ability and differentiation ability of the mesenchymal stem cells, and is capable of producing cell therapy products more economically using the mesenchymal stem cells by enabling the mesenchymal stem cells to be cultured at a low price compared to the existing culturing methods.
    Type: Application
    Filed: October 28, 2015
    Publication date: November 2, 2017
    Inventors: Jeong Chan RA, Sung Keun KANG, Sung-Min KIM, Mi Sook LEE, Jin Hwa LEE, Soon Ae KWON
  • Patent number: 9708584
    Abstract: The present invention relates to a medium composition for transforming stem cells from an aged person into young stem cells, and more particularly to a medium composition for culturing stem cells, which is used to rejuvenate stem cells from an aged person so as to have characteristics similar to those of the stem cells of young people, and to a method for rejuvenating stem cells, which comprises culturing stem cells from an aged person in the medium composition. According to the present invention, even mesenchymal stem cells collected from over 60 years old patients can be transformed into young mesenchymal stem cells having high differentiation ability, high telomerase activity, and high ability to express stem cell markers. Thus, the present invention can significantly increase the efficacy of cell therapy employing mesenchymal stem cells.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: July 18, 2017
    Assignee: R BIO CO., LTD.
    Inventors: Sung Keun Kang, Jeong Chan Ra, Hyeong Geun Park, Hang Young Lee
  • Patent number: 9476064
    Abstract: An embryonic stem cell line derived from a nucleus-transferred oocyte prepared by transferring a nucleus of a human somatic cell into an enucleated human oocyte may differentiate into various desired cell types.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: October 25, 2016
    Assignee: H BION CO., LTD.
    Inventors: Sung-Il Roh, Woo-Suk Hwang, Byeong-Chun Lee, Sung-Keun Kang, Young-June Ryu, Eu-Gene Lee, Soon-Woong Kim, Dae-Kee Kwon, Hee-Sun Kwon, Ja-Min Koo, Eul-Soon Park, Youn-Young Hwang, Hyun-Soo Yoon, Jong-Hyuk Park, Sun-Jong Kim
  • Patent number: 9433645
    Abstract: There is provided a method for preventing disruption and aggregation of stem cells. In addition, there is provided a stem cell composition for intravascular administration, in which stem cells are suspended in a solution containing aspirin. Further, there is provided a composition for preventing disruption or aggregation of stem cells, in which stem cells are suspended in a solution containing aspirin. According to the present invention, disruption and aggregation of cells may be prevented during transport or storage, such that the administered stem cells may stably reach the target tissue and exhibit the activity thereof in a more efficient manner, thereby remarkably increasing the effect of cell therapy using stem cells.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: September 6, 2016
    Assignees: R BIO CO., LTD.
    Inventors: Jeong Chan Ra, Sung Keun Kang, Il Seob Shin
  • Publication number: 20160090573
    Abstract: The present invention relates to a medium composition for enhancing the self-renewal ability of stem cells, which contains apelin, and a method of culturing stem cells using the medium composition. According to the present invention, stem cells can be effectively cultured to proliferate without changing the characteristics of the cells, and the telomerase activity of stem cells can be increased. Thus, the efficacy of cell therapy based on stem cells can be significantly improved.
    Type: Application
    Filed: February 6, 2014
    Publication date: March 31, 2016
    Inventors: Jeong-Chan Ra, Sung Keun Kang, Jung Youn Jo
  • Publication number: 20160081917
    Abstract: The present invention relates to a stem cell composition for intravenous administration, which contains stem cells at a concentration of 1×107 to 5×108 cells/ml, in which the stem cells have a diameter of 10-20 ?m and are present as single cells. The stem cell composition according to the present invention is suitable for intravenous administration, and enables the stem cells to securely reach a target tissue after intravascular administration so as to exhibit their activity in the target tissue. Thus, it can significantly increase the therapeutic effects of the stem cells.
    Type: Application
    Filed: February 6, 2014
    Publication date: March 24, 2016
    Inventors: Jeong-Chan Ra, Sung Keun Kang, Jung Youn Jo
  • Publication number: 20150118748
    Abstract: The present invention relates to a method for preparing stem cells in high concentration. The present invention makes it possible to grow stem cells in an amount sufficient to be clinically usable in a short time, and makes it possible to relatively efficiently enhance the ability of administered stem cells to efficaciously reach target tissue and exhibit an action in a stable fashion and can therefore dramatically increase the efficacy of cell therapy using stem cells.
    Type: Application
    Filed: May 23, 2013
    Publication date: April 30, 2015
    Applicants: K-STEMCELL CO., LTD.
    Inventors: Jeong Chan Ra, Sung Keun Kang, Jung Youn Jo
  • Publication number: 20150118194
    Abstract: There is provided a method for preventing disruption and aggregation of stem cells. In addition, there is provided a stem cell composition for intravascular administration, in which stem cells are suspended in a solution containing aspirin. Further, there is provided a composition for preventing disruption or aggregation of stem cells, in which stem cells are suspended in a solution containing aspirin. According to the present invention, disruption and aggregation of cells may be prevented during transport or storage, such that the administered stem cells may stably reach the target tissue and exhibit the activity thereof in a more efficient manner, thereby remarkably increasing the effect of cell therapy using stem cells.
    Type: Application
    Filed: April 15, 2013
    Publication date: April 30, 2015
    Applicants: K-STEMCELL CO., LTD.
    Inventors: Jeong Chan Ra, Sung Keun Kang, Il Seob Shin
  • Publication number: 20150072421
    Abstract: The present invention relates to a method for preparing stem cells having a size suitable for intravascular administration, and preferably to a method for preparing stem cells with a diameter ranging from 11-16 ?m. Additionally, the present invention relates to media composition for preparing stem cells having a size suitable for intravascular administration. According to the present invention, stem cells having a size suitable for intravascular administration can be prepared such that stem cells administered into a vein can stably reach a target tissue, and thus can more efficiently increase efficacy displaying activity, thereby innovatively enhancing the efficacy of cell therapy using stem cells.
    Type: Application
    Filed: April 17, 2013
    Publication date: March 12, 2015
    Applicants: K-STEMCELL CO., LTD.
    Inventors: Jeong Chan Ra, Sung Keun Kang, Il Seob Shin
  • Publication number: 20140322811
    Abstract: The present invention relates to a medium composition for transforming stem cells from an aged person into young stem cells, and more particularly to a medium composition for culturing stem cells, which is used to rejuvenate stem cells from an aged person so as to have characteristics similar to those of the stem cells of young people, and to a method for rejuvenating stem cells, which comprises culturing stem cells from an aged person in the medium composition. According to the present invention, even mesenchymal stem cells collected from over 60 years old patients can be transformed into young mesenchymal stem cells having high differentiation ability, high telomerase activity, and high ability to express stem cell markers. Thus, the present invention can significantly increase the efficacy of cell therapy employing mesenchymal stem cells.
    Type: Application
    Filed: December 3, 2012
    Publication date: October 30, 2014
    Inventors: Sung Keun Kang, Jeong Chan Ra, Hyeong Geun Park, Hang Young Lee
  • Patent number: 8871513
    Abstract: The present invention relates to a medium for culturing mesenchymal stem cells, and more particularly to a medium composition for culturing mesenchymal stem cells, which contains basal medium, L-ascorbic acid 2-phosphate, fetal bovine serum, basic fibroblast growth factor (b-FGF), non-essential amino acids (NEAAs), insulin, N-acetyl-L-cysteine, calcium chloride, and hydrocortisone, and a method of culturing mesenchymal stem cells using the same. According to the present invention, a number of mesenchymal stem cells required for stem cell therapy can be obtained in a short time, and the ability of mesenchymal stem cells to differentiate is improved so that they are useful for stem cell therapy.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: October 28, 2014
    Assignee: RNL Bio Co., Ltd.
    Inventors: Jeong Chan Ra, Sung Keun Kang, Ju Yeon Seo, Hyoeun Kim
  • Patent number: 8808682
    Abstract: The present invention relates to the ability of adipose tissue-derived adult stem cells to migrate, and more particularly to the novel use of adipose tissue-derived adult stem cells primed with a specific chemokine or growth factor and their specific secretory products, which more effectively migrate to a disease site in vivo. The inventive composition containing either adipose-derived adult stem cells or adipose tissue-derived adult stem cells primed with a specific chemokine or growth factor can be administered by a simple method such as intravenous administration and are able to induce the targeting of the stem cells to a disease site. Thus, the composition is useful as a cell therapeutic agent.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: August 19, 2014
    Assignee: RNL Bio Co., Ltd
    Inventors: Jeong Chan Ra, Sung Keun Kang, Sun Jin Baek
  • Publication number: 20140154800
    Abstract: An embryonic stem cell line derived from a nucleus-transferred oocyte prepared by transferring a nucleus of a human somatic cell into an enucleated human oocyte may differentiate into various desired cell types.
    Type: Application
    Filed: November 26, 2013
    Publication date: June 5, 2014
    Applicant: H. Bion Co., Ltd.
    Inventors: Sung-Il ROH, Woo-Suk HWANG, Byeong-Chun LEE, Sung-Keun KANG, Young-June RYU, Eu-Gene LEE, Soon-Woong KIM, Dae-Kee KWON, Hee-Sun KWON, Ja-Min KOO, Eul-Soon PARK, Youn-Young HWANG, Hyun-SOO YOON, Jong-Hyuk PARK, Sun-Jong KIM