MODULATION OF PTP1B SIGNAL TRANSDUCTION BY RNA INTERFERENCE

摘要

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.