Porcine nuclear transfer

A - Human Necessities – 01 – K

Patent

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Details

A01K 67/00 (2006.01) A61K 35/54 (2006.01) C12N 15/06 (2006.01) C12N 15/87 (2006.01)

Patent

CA 2324009

A process for the production of nuclear transferred porcine embryonic cells which includes providing a porcine oocyte at the Metaphase II stage of development from which the nucleus is removed, transferring a porcine karyoplast at the G0 or G1 state into the oocyte to give a nuclear transferred porcine embryonic cell and optionally culturing the nuclear transferred cell in vitro to allow one or more cell divisions to give a plurality of nuclear transferred porcine embryonic cells is disclosed. Also disclosed is a process for the clonal generation or propagation of pigs which process includes providing a procine oocyte at the Metaphase II stage of development from which the nucleus is removed, transferring a porcine donor karyoplast at the G0 or G1 state into the oocyte to give a nuclear transferred porcine embryonic cell, and thereafter culturing the nuclear transferred cell in vitro to allow one or more cell divisions to give a plurality of nuclear transferred porcine embryonic cells, and thereafter transferring a plurality of porcine embryonic cells so produced into a pregnancy competent uterus of a female pig which at conclusion of the pregnancy term gives rise to one or more genetically identical off-spring.

L'invention concerne un procédé de production de cellules embryonnaires porcines à noyau transféré, qui comporte les étapes consistant à prévoir un ovocyte porcin au stade de développement métaphase II, duquel on extrait le noyau; transférer un caryoplaste porcin d'état G0 ou G1 dans l'ovocyte de façon à obtenir une cellule embryonnaire porcine à noyau transféré, et éventuellement mettre en culture la cellule à noyau transféré in vitro de façon à obtenir une ou plusieurs divisions cellulaires qui produisent plusieurs cellules embryonnaires porcines à noyau transféré. L'invention concerne également un procédé de génération ou de propagation clonale de porcs, le procédé comportant les étapes consistant à prévoir un ovocyte porcin au stade de développement métaphase II, duquel on extrait le noyau; transférer un caryoplaste de donneur porcin d'état G0 ou G1 dans l'ovocyte de façon à obtenir une cellule embryonnaire porcine à noyau transféré; mettre ensuite en culture la cellule à noyau transféré in vitro de façon à obtenir une ou plusieurs divisions cellulaires qui produisent plusieurs cellules embryonnaires porcines à noyau transféré; puis transférer plusieurs cellules embryonnaires porcines ainsi produites dans un utérus de truie capable de gestation qui, au terme de la gestation, donne naissance à une progéniture identique d'un point de vue génétique.

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