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    Genome Biol. 2008;9(12):R180. Epub 2008 Dec 18.

    Singular value decomposition-based regression identifies activation of endogenous signaling pathways in vivo.

    Liu Z, Wang M, Alvarez JV, Bonney ME, Chen CC, D'Cruz C, Pan TC, Tadesse MG, Chodosh LA.

    Source

    Department of Cancer Biology, Abramson Family Cancer Research Institute, University of Pennsylvania, 421 Curie Blvd, BRB II/III 616, Philadelphia, PA 19104, USA. zhandong@mail.med.upenn.edu

    Abstract

    The ability to detect activation of signaling pathways based solely on gene expression data represents an important goal in biological research. We tested the sensitivity of singular value decomposition-based regression by focusing on functional interactions between the Ras and transforming growth factor beta signaling pathways. Our findings demonstrate that this approach is sufficiently sensitive to detect the secondary activation of endogenous signaling pathways as it occurs through crosstalk following ectopic activation of a primary pathway.

    PMID:
    19094238
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2646284
    Free PMC Article

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