Expansion mutation within polyglutamine (polyQ) tract proteins is known to underlie a number of severe neurodegenerative disorders such as Huntington’s Disease and Spinocerebellar Ataxia. Using a bioinformatics approach, we have identied a novel protein, FAM171B, that contains a stretch of 14 consecutive glutamines. Using in situ hybridization and immunohistochemistry experiments, our data strongly suggests that FAM171B is widely expressed in the brain with abundant expression in the hippocampus, cortex, and cerebellum. To begin elucidating FAM171B sub-cellular location we are using confocal uorescence imaging of GFP-fusion tagged FAM171B and anti-FAM171B antibodies in vitro. Our ndings indicate that FAM171B displays a punctate/vesicular staining pattern throughout the cytoplasm of human glioblastoma tissue culture cells and primary mouse cortical neurons. FAM171B localization is particularly enriched in the peri-nuclear region and adjacent to the plasma membrane. Current studies are utilizing organelle specic markers to verify sub-cellular locale and live-cell imaging to assay whether FAM171B may trac between intracellular compartments.
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Translocator Protein in Brain Tissue and Neurodegeneration
Neurodegenerative disorders, such as Alzheimer's Disease, effect over 50 million Americans a year, and despite the high prevalence, the pathogenesis of these diseases remains unclear. However, researchers have noticed a dramatic up-regulation of a protein called translocator protein (TSPO) under neurodegenerative and neuro-inflammatory conditions. While TSPO expression is prevalent in the brain, it is still unclear as to what exact types of cells TSPO is expressed in, and what mechanisms result in increased expression. Regulating the expression or function of TSPO is believed to have an impact on neurodegenerative processes, but definitive evidence of this is also limited. To advance our understanding we will examine what cells TSPO is expressed in, and reveal what effects TSPO agonists and antagonists will have on brain activity= patterns using electroencephalography. Some research has found that certain TSPO ligands have potential to be therapeutic agents for neurodegeneration, neuro-inflammation and neurotrauma. Therefore, localization of TSPO in brain tissue and investigation of the mechanism by which it becomes activated, may allow for the development of novel treatments for neurodegenerative issues such as Alzheimer's.
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- Award ID(s):
- 1757316
- PAR ID:
- 10218337
- Date Published:
- Journal Name:
- Journal of health disparities research and practice
- Volume:
- 12
- Issue:
- STEP-UP
- ISSN:
- 2166-5222
- Page Range / eLocation ID:
- 65
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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