Modulation of ptp1b signal transduction by rna interference

C - Chemistry – Metallurgy – 12 – Q

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C12Q 1/68 (2006.01) A01N 43/04 (2006.01) C07H 21/02 (2006.01) C07H 21/04 (2006.01) C12N 15/63 (2006.01) C12P 19/34 (2006.01)

Patent

CA 2525976

Compositions and methods relating to small interfering RNA (siRNA) polynucleotides are provided as pertains to modulation of biological signal transduction. Shown are siRNA polynucleotides that interfere with expression of PTP1B, a member of the protein tyrosine phosphatase (PTP) class of enzymes that mediate signal transduction. In certain preferred embodiments siRNA modulate signal transduction pathways comprising human or murine PTP-1B and, in certain further embodiments, insulin receptor and/or Jak2. Modulation of PTP1B-mediated biological signal transduction has uses in diseases associated with defects in cell proliferation, cell differentiation and/or cell survival, such as metabolic disorders (including diabetes and obesity), cancer, autoimmune disease, infectious and inflammatory disorders and other conditions.

Cette invention se rapporte à des compositions et à des procédés relatifs à des polynucléotides d'ARN à faible interférence (ARNsi), pour la modulation de la transduction de signaux biologiques. Ces polynucléotides d'ARNsi interfèrent avec l'expression de l'enzyme PTP1B qui est un membre de la classe des enzymes protéine-tyrosine-phosphatases (PTP) servant de médiateurs dans la transduction des signaux. Dans certains modes de réalisation préférés, l'ARNsi module les voies de transduction de signaux comprend l'enzyme PTP-1B humaine ou murine et, dans d'autres modes de réalisation, le récepteur de l'insuline et/ou la protéine Jak2. La modulation de la transduction de signaux biologiques à médiation par l'enzyme PTP1B est utile dans des maladies associées à des défaillances de la prolifération cellulaire, de la différenciation cellulaire et/ou de la survie des cellules telles que les troubles métaboliques (y compris le diabète et l'obésité), le cancer, les maladies auto-immunitaires, les troubles infectieux et inflammatoires et d'autres états pathologiques.

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