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• W2141702291 endingPage "e80829" @default.
• W2141702291 startingPage "e80829" @default.
• W2141702291 abstract "Background Alzheimer's disease (AD) is a debilitating age related progressive neurodegenerative disorder characterized by the loss of cognition, and eventual death of the affected individual. One of the major causes of AD is the accumulation of Amyloid-beta 42 (Aβ42) polypeptides formed by the improper cleavage of amyloid precursor protein (APP) in the brain. These plaques disrupt normal cellular processes through oxidative stress and aberrant signaling resulting in the loss of synaptic activity and death of the neurons. However, the detailed genetic mechanism(s) responsible for this neurodegeneration still remain elusive. Methodology/ Principle Findings We have generated a transgenic Drosophila eye model where high levels of human Aβ42 is misexpressed in the differentiating photoreceptor neurons of the developing eye, which phenocopy Alzheimer's like neuropathology in the neural retina. We have utilized this model for a gain of function screen using members of various signaling pathways involved in the development of the fly eye to identify downstream targets or modifiers of Aβ42 mediated neurodegeneration. We have identified the homeotic gene teashirt (tsh) as a suppressor of the Aβ42 mediated neurodegenerative phenotype. Targeted misexpression of tsh with Aβ42 in the differentiating retina can significantly rescue neurodegeneration by blocking cell death. We found that Tsh protein is absent/ downregulated in the neural retina at this stage. The structure function analysis revealed that the PLDLS domain of Tsh acts as an inhibitor of the neuroprotective function of tsh in the Drosophila eye model. Lastly, we found that the tsh paralog, tiptop (tio) can also rescue Aβ42 mediated neurodegeneration. Conclusions/Significance We have identified tsh and tio as new genetic modifiers of Aβ42 mediated neurodegeneration. Our studies demonstrate a novel neuroprotective function of tsh and its paralog tio in Aβ42 mediated neurodegeneration. The neuroprotective function of tsh is independent of its role in retinal determination." @default.
• W2141702291 created "2016-06-24" @default.
• W2141702291 creator A5022925239 @default.
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• W2141702291 creator A5067603018 @default.
• W2141702291 creator A5071018732 @default.
• W2141702291 date "2013-11-25" @default.
• W2141702291 modified "2023-09-23" @default.
• W2141702291 title "Homeotic Gene teashirt (tsh) Has a Neuroprotective Function in Amyloid-Beta 42 Mediated Neurodegeneration" @default.
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• W2141702291 doi "https://doi.org/10.1371/journal.pone.0080829" @default.
• W2141702291 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3840013" @default.
• W2141702291 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24282556" @default.
• W2141702291 hasPublicationYear "2013" @default.
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