Oligonucleotides related to lipid membrane attachments

C - Chemistry – Metallurgy – 07 – H

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C07H 21/00 (2006.01) C12Q 1/68 (2006.01) G01N 33/543 (2006.01) G01N 33/68 (2006.01)

Patent

CA 2558256

Oligonucleotide structures are provided that are capable of forming more stable bonds to a lipid membrane and thereby generate an improved control of the process whereby oliogonucleotide linkers are introduced to lipid membranes. Methods of forming lipid membrane oligonucleotide attachments are provided including lipid vesicles. The oligonucleotides typically comprise at least two hydrophobic anchoring moieties capable of being attached to a lipid membrane. Said moieties may be attached at the terminalends of an oligonucleotide or, in the case of a first and second strand forming a duplex, at the same terminal end one of the strands other end not being part of the duplex leaving it free to hybridize to additional strands. The lipid vesicles attached with the oligonucleotide can be used in biosensors and may contain membrane proteins.

L'invention concerne des structures oligonucléotides aptes à former des liaisons plus stables avec une membrane lipidique et permettant ainsi un contrôle amélioré du processus d'introduction de lieurs oligonucléotidiques sur une membrane lipidique. L'invention porte également sur des procédés pour générer des attachements oligonucléotidiques sur une membrane lipidique, incluant des vésicules lipidiques. Les oligonucléotides comportent typiquement au moins deux fractions hydrophobes d'ancrage aptes à s'attacher à une membrane lipidique. Lesdites fractions peuvent être attachées aux extrémités terminales d'un oligonucléotide, ou, dans le cas d'un premier et un deuxième brin formant un duplex, à la même extrémité terminale d'un brin, l'autre extrémité ne faisant pas partie du duplex, ladite autre extrémité étant libre de s'hybrider aux brins additionnels. Les vésicules lipidiques attachées à l'oligonucléotide peuvent être utilisées dans des biocapteurs et peuvent comporter des protéines membranaires.

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