Global Patent Index - EP 1117763 A4

EP 1117763 A4 20041201 - METHOD FOR PRODUCING CLONED TIGERS BY EMPLOYING INTER-SPECIES NUCLEAR TRANSPLANTATION TECHNIQUE

Title (en)

METHOD FOR PRODUCING CLONED TIGERS BY EMPLOYING INTER-SPECIES NUCLEAR TRANSPLANTATION TECHNIQUE

Title (de)

VERFAHREN ZUR PRODUKTION VON GEKLONTEN TIGERN MITTELS EINER INTERSPEZIES-KERNTRANSPLANTATIONSTECHNIK

Title (fr)

PROCEDE DE PRODUCTION DE TIGRES CLONES UTILISANT UNE TECHNIQUE DE TRANSPLANTATION DE NOYAU INTER-ESPECES

Publication

EP 1117763 A4 20041201 (EN)

Application

EP 00941006 A 20000630

Priority

  • KR 0000706 W 20000630
  • KR 19990026163 A 19990630
  • KR 19990026164 A 19990630
  • KR 19990026165 A 19990630
  • KR 19990026166 A 19990630
  • KR 19990036373 A 19990830
  • KR 20000004381 A 20000128
  • KR 20000004382 A 20000128

Abstract (en)

[origin: WO0100794A1] The present invention provides a method for producing cloned tigers by employing inter-species nuclear transplantation technique. The method for producing cloned tigers of the invention comprises the steps of: preparing donor somatic cell lines collected from tiger; maturing oocytes collected from ovary of cow or cat in vitro; removing the cumulus cells surrounding the oocytes; cutting a portion of zona pellucida of the matured oocytes to make a slit, and squeezing out a portion of cytoplasm including the first polar body through the slit to give enucleated recipient oocytes; transferring a nucleus to the recipient oocyte by injection of the donor cells to the enucleated recipient oocytes, followed by the subsequent electrofusion and activation of the electrofused cells to give embryos; postactivating and culturing the embryos in vitro; and, transferring the cultured embryos into surrogate mothers to produce cloned tigers. The present invention can be widely applied in preservation of genetic characters of rare or endangered species permanently in the form of nuclear transferred embryos.

IPC 1-7

A01K 67/027; C12N 15/00

IPC 8 full level

A01K 67/027 (2006.01); C12N 5/10 (2006.01); C12N 15/02 (2006.01); C12N 15/873 (2010.01)

CPC (source: EP)

C12N 15/873 (2013.01)

Citation (search report)

  • [A] WO 9901163 A1 19990114 - UNIV MASSACHUSETTS [US]
  • [A] WO 9905266 A2 19990204 - WISCONSIN ALUMNI RES FOUND [US], et al
  • [T] WO 0228164 A2 20020411 - ADVANCED CELL TECH INC [US], et al
  • [PX] ANONYMOUS: "Scientists aim to clone Tiger", INTERNET ARTICLE, 24 July 2000 (2000-07-24), XP002295956, Retrieved from the Internet <URL:www.ruhr-uni-bochum.de/kbe/Koreadossier/12.html> [retrieved on 20040903]
  • [PA] ROH S, SHIM H, HWANG WS, YOON JT: "In vitro development of green fluorescent protein (GFP) transgenic bovine embryos after nuclear transfer using different cell cycles and passages of fetal fibroblasts.", REPROD FERTIL DEV., vol. 12, no. 1-2, 2000, pages 1 - 6, XP008034971
  • [T] KIM JI-HO: "Second Mt. Paektu tiger arrives in South for cloning reproduction", THE KOREA HERALD, 17 April 2001 (2001-04-17), XP002295957, Retrieved from the Internet <URL:http://offnature.roshd.ir/tiger/news/2001/April/01_4_17w1.htm> [retrieved on 20040921]
  • [T] SHIN S J; LEE B C; PARK J I; LIM J M; HWANG W S: "A separate procedure of fusion and activation in an ear fibroblast nuclear transfer program improves preimplantation development of bovine reconstituted oocytes", THERIOGENOLOGY, vol. 55, 1 May 2001 (2001-05-01), pages 1697 - 1704, XP002294950
  • [T] TORCHIA CHRISTOPHER: "POLITICAL FRICTION KEEPS KOREAN TIGER FROM PROCREATIVE PROSPECTS", INTERNET ARTICLE, 13 May 2001 (2001-05-13), XP002295958, Retrieved from the Internet <URL:http://www.savechinastigers.org/t-news/korea-gwacheon.htm> [retrieved on 20040913]
  • [T] REGELADO A. ET AL: "Life Science: Cross-Species Cloning", THE WALL STREET JOURNAL, 19 March 2002 (2002-03-19), XP002295959, Retrieved from the Internet <URL:http://loper.org/~george/trends/2002/Mar/78.html> [retrieved on 20040910]
  • [T] HWANG DOO-HYONG: "North Korea Offers Paekdu Mountain Tiger Couple for Cloning", YONHAP NEWS AGENCY, 20 November 2002 (2002-11-20), XP002295960, Retrieved from the Internet <URL:http://www.5tigers.org/news/2002/November/02_11_20w1.htm> [retrieved on 20040910]
  • [T] AHN YONG-HYEON ET AL.: "'Baekdu Tiger Cloning Project' - First Step to Ecological Cooperation", INTERNET ARTICLE, 29 July 2002 (2002-07-29), XP002296001, Retrieved from the Internet <URL:nk.chosun.com/english/news/ news.html?ACT=detail&res_id=6903> [retrieved on 20040910]
  • See references of WO 0100794A1

Designated contracting state (EPC)

DE DK FR GB IT NL

DOCDB simple family (publication)

WO 0100794 A1 20010104; AU 5577700 A 20010131; AU 753209 B2 20021010; CA 2334954 A1 20010104; CN 1304445 A 20010718; EP 1117763 A1 20010725; EP 1117763 A4 20041201; JP 2003503045 A 20030128; NZ 508739 A 20021126

DOCDB simple family (application)

KR 0000706 W 20000630; AU 5577700 A 20000630; CA 2334954 A 20000630; CN 00800651 A 20000630; EP 00941006 A 20000630; JP 2001506788 A 20000630; NZ 50873900 A 20000630