133 results found
    1. Genetics and Genomics
    2. Immunology and Inflammation

    Paradoxical dominant negative activity of an immunodeficiency-associated activating PIK3R1 variant

    Patsy R Tomlinson, Rachel G Knox ... Robert K Semple
    PIK3R1 mutations that cause immunodeficiency through PI3-kinase hyperactivation also cause SHORT syndrome, due to PI3-kinase hypofunction, attributable to PI3-kinase destabilisation and outcompetition by mutant PIK3R1.
    1. Biochemistry and Chemical Biology
    2. Cancer Biology

    FER-mediated phosphorylation and PIK3R2 recruitment on IRS4 promotes AKT activation and tumorigenesis in ovarian cancer cells

    Yanchun Zhang, Xuexue Xiong ... Gaofeng Fan
    Beyond its well-accepted function in metastasis, non-receptor tyrosine kinase FER also controls ovarian tumor cell proliferation through FER-IRS4-AKT signaling axis, making itself as a promising druggable target for the disease.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Disease-related mutations in PI3Kγ disrupt regulatory C-terminal dynamics and reveal a path to selective inhibitors

    Manoj K Rathinaswamy, Zied Gaieb ... John E Burke
    The c-terminus of PI3K plays a key role in regulating kinase activity, with c-terminal disease-linked mutations leading to either activation or inhibition, which reveal a path to specific inhibitors.
    1. Neuroscience

    Mouse models of human PIK3CA-related brain overgrowth have acutely treatable epilepsy

    Achira Roy, Jonathan Skibo ... Kathleen J Millen
    Acute one-hour treatment of Pik3ca mutant mice with a novel anti-epilepsy drug suppresses seizures despite continued developmental brain dysmorphology, promising a new therapeutic strategy for patients with intractable pediatric epilepsy.
    1. Biochemistry and Chemical Biology

    Molecular dissection of PI3Kβ synergistic activation by receptor tyrosine kinases, GβGγ, and Rho-family GTPases

    Benjamin R Duewell, Naomi E Wilson ... Scott D Hansen
    Single molecule reconstitution of PI3Kβ synergistic activation reveals mechanism for rapid PI(3,4,5)P3 production during immune cell signaling.
    1. Cell Biology
    2. Medicine

    ErbB signaling is a potential therapeutic target for vascular lesions with fibrous component

    Suvi Jauhiainen, Henna Ilmonen ... Johanna P Laakkonen
    Experimentation on patient biopsies, cell culture, and xenograft models demonstrates involvement of ErbB signaling and fibroblasts in lesion growth, implying that targeting of both stromal and endothelial cells could be a beneficial treatment strategy for patients with venous lesions.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Allosteric activation or inhibition of PI3Kγ mediated through conformational changes in the p110γ helical domain

    Noah J Harris, Meredith L Jenkins ... John E Burke
    Regulation of phosphoinositide 3 kinase (PI3Kγ) is essential in immune function, and stimuli that modulate the dynamics of the PI3Kγ helical domain can activate or inhibit kinase activity.
    1. Cell Biology

    Regulation of the PI3K pathway through a p85α monomer–homodimer equilibrium

    Lydia WT Cheung, Katarzyna W Walkiewicz ... Gordon B Mills
    The p85α homodimer plays a role in the PI3K pathway by regulating PTEN function.
    1. Developmental Biology

    End-of-life targeted degradation of DAF-2 insulin/IGF-1 receptor promotes longevity free from growth-related pathologies

    Richard Venz, Tina Pekec ... Collin Yvès Ewald
    Inducible degradation of the insulin/insulin-like growth factor-1 receptor shows that a doubling in lifespan is possible even at extremely old ages in an organism.
    1. Medicine

    Genomic landscape of lymphatic malformations: a case series and response to the PI3Kα inhibitor alpelisib in an N-of-1 clinical trial

    Montaser F Shaheen, Julie Y Tse ... Wadih Arap
    Pathogenic activating mutations in PIK3CA or NRAS were the most common genetic findings in a lymphatic malformation patient cohort and an N-of-1 trial of the PI3Kα inhibitor alpelisib in a patient with a PIK3CA mutation confirmed these findings are actionable.

Refine your results by:

Type
Research categories