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Lab News

03-02-15 Joe wins 2015 New Vision Award
Joe had a very successful conference last week, and was awarded the 2015 New Vision Award at the Charleston Conference on Alzheimer’s disease. This is a highly selective award (with money!) which involves a first round of selections to attend the conference and then a study section-like discussion of the remaining entries at the conference. Joe’s proposal was selected unanimously.
01-27-15 Tony speaks at World Economic Forum
Tony was invited to Davos to discuss how to tackle brain diseases at the World Economic Forum!
12-02-14 Final round for Breakthrough of the Year!
We made the final round for Science's 2014 Breakthrough of the year!  Let everyone know so they can vote!
11-13-14 Vote for the breakthrough of the year!
Help us win Sciene Breakthrough of 2014 by voting for "Young blood fixes old."
09-23-14 Creative Minds: Tony and Tom are in the news!
Congratulations to Tony and Tom for being in the NIH Director's blog.  You can read it here!

pubmed: wyss-coray

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    CalFluors: A Universal Motif for Fluorogenic Azide Probes Across the Visible Spectrum.

    J Am Chem Soc. 2015 Apr 22;

    Authors: Shieh P, Dien VT, Beahm BJ, Castellano JM, Wyss-Coray T, Bertozzi CR

    Fluorescent bioorthogonal smart probes across the visible spectrum will enable sensitive visualization of metabolically labeled molecules in biological systems. Here we present a unified design, based on the principle of photoinduced electron transfer (PeT), to access a panel of highly fluorogenic azide probes that are activated by conversion to the corresponding triazoles via click chemistry. Termed the CalFluors, these probes possess emission maxima that range from green to far red wavelengths, and enable sensitive biomolecule detection under no-wash conditions. We used the CalFluor probes to image various alkyne-labeled biomolecules (glycans, DNA, RNA and proteins) in cells, developing zebrafish and mouse brain tissue slices.

    PMID: 25902190 [PubMed - as supplied by publisher]

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    Astrocyte-Derived TGF-β1 Accelerates Disease Progression in ALS Mice by Interfering with the Neuroprotective Functions of Microglia and T Cells.

    Cell Rep. 2015 Apr 15;

    Authors: Endo F, Komine O, Fujimori-Tonou N, Katsuno M, Jin S, Watanabe S, Sobue G, Dezawa M, Wyss-Coray T, Yamanaka K

    Neuroinflammation, which includes both neuroprotective and neurotoxic reactions by activated glial cells and infiltrated immune cells, is involved in the pathomechanism of amyotrophic lateral sclerosis (ALS). However, the cytokines that regulate the neuroprotective inflammatory response in ALS are not clear. Here, we identify transforming growth factor-β1 (TGF-β1), which is upregulated in astrocytes of murine and human ALS, as a negative regulator of neuroprotective inflammatory response. We demonstrate that astrocyte-specific overproduction of TGF-β1 in SOD1(G93A) mice accelerates disease progression in a non-cell-autonomous manner, with reduced IGF-I production in deactivated microglia and fewer T cells with an IFN-γ-dominant milieu. Moreover, expression levels of endogenous TGF-β1 in SOD1(G93A) mice negatively correlate with lifespan. Furthermore, pharmacological administration of a TGF-β signaling inhibitor after disease onset extends survival time of SOD1(G93A) mice. These findings indicate that astrocytic TGF-β1 determines disease progression and is critical to the pathomechanism of ALS.

    PMID: 25892237 [PubMed - as supplied by publisher]