Method for generating primate cardiovascular progenitor...

C - Chemistry – Metallurgy – 12 – N

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C12N 5/077 (2010.01) C12N 5/073 (2010.01) C12N 5/0735 (2010.01) C12Q 1/04 (2006.01) G01N 33/569 (2006.01)

Patent

CA 2718032

The present invention is directed to a method for the in vitro preparation of cardiovascular progenitors cells from mammalian embryonic stem cells (ES cells) or mammalian embryonic-like state cells, preferably from primate, wherein said method comprises the use of the CD15(SSEAI) marker as a positive cardiovascular progenitors differentiation marker. The present invention also claimed the use of a receptor tyrosine kinase inhibitor, particularly the SU5402 or SU11248 in association with the BMP2 for improving the efficiency of the desired differentiation. The present invention is also directed to the use of platelet lysate as foetal animal serum substitute in a culture medium intended to the proliferation or propagation of primate ES cells maintaining their pluripotency feature. Derived compositions or kits in relation with the claimed methods or product obtainable by the claimed methods form also part of the present invention.

La présente invention concerne un procédé de préparation in vitro de cellules progénitrices cardiovasculaires à partir de cellules embryonnaires souches mammaliennes (cellules ES) ou de cellules mammaliennes à l'état embryonnaire, de préférence primates. Le procédé selon l'invention comprend l'utilisation du marqueur CD15 (SSEAI) en tant que marqueur positif de la différenciation des progéniteurs cardiovasculaires. La présente invention concerne également l'utilisation d'un inhibiteur du récepteur de tyrosine kinase, notamment SU5402 ou SU11248 en association avec BMP2 pour améliorer l'efficacité de la différenciation souhaitée. La présente invention concerne également l'utilisation d'un lysat de plaquettes en substitut d'un sérum foeal animal dans un milieu de culture prévu pour la prolifération ou la propagation de cellules ES primates en conservant leur caractéristique de pluripotence. Des compositions dérivées ou des kits associés aux procédés revendiqués ou au produit qui peut être obtenu par les procédés revendiqués font également partie de la présente invention.

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