Reversibly immortalised olfactory ensheathing glia and their...

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 5/10 (2006.01) C12N 5/071 (2010.01) C12N 5/0793 (2010.01) A61K 35/12 (2006.01) A61K 35/30 (2006.01) A61K 48/00 (2006.01) A61P 25/00 (2006.01) C12N 15/09 (2006.01) C12N 15/85 (2006.01)

Patent

CA 2531320

The present invention is based on the capacity of the Olfactory Ensheathing Glia (OEG) to foster axonal regeneration in the adult mammalian central nervous system (CNS). This specific capacity is probably due to a combination of several factors, such as the molecular composition of cellular membrane and/or the capacity to secrete some molecules; combined with the capacity to reduce glial scar and accompany new growing axon in the damaged CNS. We have developed immortalised cell lines from primary human OEGs. The cells were cultured from post-mortem human tissue from donors and immortalised using a reversible system. Some of these OEG human clonal cell lines were selected by their ability to promote axonal regeneration from adult rat retinal ganglion neurons in a similar fashion to primary OEGs. These cell lines, alone or in pharmaceutical compositions comprising these cells, may be used to repair neuronal damage in the CNS.

L'invention concerne la capacité de la névroglie enveloppante olfactive (OEG) à promouvoir la régénération axonale dans le système nerveux central (SNC) d'un mammifère adulte. Cette caractéristique est probablement due à une combinaison de facteurs, tels que la composition moléculaire d'une membrane cellulaire et/ou la capacité à sécréter certaines molécules, associés à la capacité à réduire la cicatrice gliale et à accompagner un nouvel axone en croissance dans le SNC endommagé. La présente invention concerne des lignées cellulaires immortalisées issues de névroglies enveloppantes olfactives humaines primaires. Ces cellules ont été cultivées à partir de tissus humains post-mortem provenant de donneurs, et immortalisées au moyen d'un système réversible. Certaines de ces lignées cellulaires clonales humaines d'OEG ont été choisies pour leur capacité à promouvoir la régénération axonale à partir de neurones de cellules ganglionnaires de la rétine de rats adultes à la façon des OEG primaires. Ces lignées cellulaires peuvent être utilisées, seules ou en compositions pharmaceutiques, dans la réparation de lésions neuronales dans le SNC.

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