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  • 1
    Publication Date: 2014-04-12
    Description: Genome-wide characterization of the in vivo cellular response to perturbation is fundamental to understanding how cells survive stress. Identifying the proteins and pathways perturbed by small molecules affects biology and medicine by revealing the mechanisms of drug action. We used a yeast chemogenomics platform that quantifies the requirement for each gene for resistance to a compound in vivo to profile 3250 small molecules in a systematic and unbiased manner. We identified 317 compounds that specifically perturb the function of 121 genes and characterized the mechanism of specific compounds. Global analysis revealed that the cellular response to small molecules is limited and described by a network of 45 major chemogenomic signatures. Our results provide a resource for the discovery of functional interactions among genes, chemicals, and biological processes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4254748/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4254748/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Anna Y -- St Onge, Robert P -- Proctor, Michael J -- Wallace, Iain M -- Nile, Aaron H -- Spagnuolo, Paul A -- Jitkova, Yulia -- Gronda, Marcela -- Wu, Yan -- Kim, Moshe K -- Cheung-Ong, Kahlin -- Torres, Nikko P -- Spear, Eric D -- Han, Mitchell K L -- Schlecht, Ulrich -- Suresh, Sundari -- Duby, Geoffrey -- Heisler, Lawrence E -- Surendra, Anuradha -- Fung, Eula -- Urbanus, Malene L -- Gebbia, Marinella -- Lissina, Elena -- Miranda, Molly -- Chiang, Jennifer H -- Aparicio, Ana Maria -- Zeghouf, Mahel -- Davis, Ronald W -- Cherfils, Jacqueline -- Boutry, Marc -- Kaiser, Chris A -- Cummins, Carolyn L -- Trimble, William S -- Brown, Grant W -- Schimmer, Aaron D -- Bankaitis, Vytas A -- Nislow, Corey -- Bader, Gary D -- Giaever, Guri -- GM103504/GM/NIGMS NIH HHS/ -- GM44530/GM/NIGMS NIH HHS/ -- MOP-700724/Canadian Institutes of Health Research/Canada -- MOP-79368/Canadian Institutes of Health Research/Canada -- MOP-81340/Canadian Institutes of Health Research/Canada -- P01 HG000205/HG/NHGRI NIH HHS/ -- P41 GM103504/GM/NIGMS NIH HHS/ -- R01 003317-07/PHS HHS/ -- R01 CA157456/CA/NCI NIH HHS/ -- R01 GM044530/GM/NIGMS NIH HHS/ -- R01 HG003317/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2014 Apr 11;344(6180):208-11. doi: 10.1126/science.1250217.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Donnelly Centre, University of Toronto, Toronto, Ontario M5S 3E1, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24723613" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line, Tumor ; Cells/*drug effects ; Drug Evaluation, Preclinical/*methods ; Drug Resistance/*genetics ; *Gene Regulatory Networks ; Genome-Wide Association Study/*methods ; Haploinsufficiency ; Humans ; Pharmacogenetics ; Saccharomyces cerevisiae/drug effects/genetics ; Small Molecule Libraries/*pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2018-05-05
    Description: In Drosophila neurons, uniform minus-end-out polarity in dendrites is maintained in part by kinesin-2-mediated steering of growing microtubules at branch points. Apc links the kinesin motor to growing microtubule plus ends and Apc2 recruits Apc to branch points where it functions. Because Apc2 acts to concentrate other steering proteins to branch points, we wished to understand how Apc2 is targeted. From an initial broad candidate RNAi screen, we found Miro (a mitochondrial transport protein), Ank2, Axin, spastin and Rac1 were required to position Apc2-GFP at dendrite branch points. YFP-Ank2-L8, Axin-GFP and mitochondria also localized to branch points suggesting the screen identified relevant proteins. By performing secondary screens, we found that energy production by mitochondria was key for Apc2-GFP positioning and spastin acted upstream of mitochondria. Ank2 seems to act independently from other players, except its membrane partner, Neuroglian (Nrg). Rac1 likely acts through Arp2/3 to generate branched actin to help recruit Apc2-GFP. Axin can function in a variety of wnt signaling pathways, one of which includes heterotrimeric G proteins and Frizzleds. Knockdown of Gαs, Gαo, Fz and Fz2, reduced targeting of Apc2 and Axin to branch points. Overall our data suggest that mitochondrial energy production, Nrg/Ank2, branched actin generated by Arp2/3 and Fz/G proteins/Axin function as four modules that control localization of the microtubule regulator Apc2 to its site of action in dendrite branch points.
    Electronic ISSN: 2160-1836
    Topics: Biology
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