This is a request for the continuation of a multi-disciplinary program project to investigate the mechanisms of neurodegeneration and the emergence of inflammation in the aging brain. The project brings together investigators with a track record in the field, history of collaboration and complimentary expertise. The primary program investigators are Drs. Glabe, Lynch, Gall, Cotman, Tenner, LaFerla and Cummings. In the past grant period the primary focus was on the mechanisms causing the deposition of beta-amyloid and its consequences on neuronal and glial function and neurodegeneration. In the proposed continuation, Drs. Glabe and Lynch will evaluate the mechanisms of amyloid accumulation within neurons, examine possible lysosomal dysfunction in neuronal degeneration, and analyze regulatory mechanisms in the uptake of beta-amyloid and the propagation of its deposition. Drs. Gall, Cotman and Tenner will center their efforts on inflammation in the aging brain and the possible role of beta-amyloid and other inflammatory stimuli on the TNFalpha. Cotman will examine the induction of the pro-apoptotic TNF-Fas superfamily of receptors and ligands in the brain and the molecular mechanisms by which non- steroidal anti-inflammatory molecules regulate neurodegeneration. Tenner will study complement activation, particularly the contributions of C1q, and critically evaluate the hypothesis that beta-amyloid immunization can prevent build up of beta-amyloid in the absence of autoimmune responses. In this research and in the field in general, transgenic models offer many opportunities for testing hypothesis on the mechanisms driving age-related neurodegeneration. Dr. LaFerla will focus on the development and characterization of self transgenic animal models. An Administrative Core is proposed to coordinate efforts and a Tissue and Peptide Resources Core directed by Cummings with Co-PI LaFerla will postmortem brain tissues and peptides and assist in maintaining select transgenic animals.

Agency
National Institute of Health (NIH)
Institute
National Institute on Aging (NIA)
Type
Research Program Projects (P01)
Project #
5P01AG000538-28
Application #
6923631
Study Section
Special Emphasis Panel (ZAG1-ZIJ-3 (J1))
Program Officer
Wise, Bradley C
Project Start
1985-09-30
Project End
2008-03-31
Budget Start
2005-08-15
Budget End
2008-03-31
Support Year
28
Fiscal Year
2005
Total Cost
$1,169,211
Indirect Cost
Name
University of California Irvine
Department
Internal Medicine/Medicine
Type
Organized Research Units
DUNS #
046705849
City
Irvine
State
CA
Country
United States
Zip Code
92697
Sosna, Justyna; Philipp, Stephan; Albay 3rd, Ricardo et al. (2018) Early long-term administration of the CSF1R inhibitor PLX3397 ablates microglia and reduces accumulation of intraneuronal amyloid, neuritic plaque deposition and pre-fibrillar oligomers in 5XFAD mouse model of Alzheimer's disease. Mol Neurodegener 13:11
Tong, Liqi; Prieto, G Aleph; Cotman, Carl W (2018) IL-1? suppresses cLTP-induced surface expression of GluA1 and actin polymerization via ceramide-mediated Src activation. J Neuroinflammation 15:127
Hainsworth, A H; Lee, S; Foot, P et al. (2018) Super-resolution imaging of subcortical white matter using stochastic optical reconstruction microscopy (STORM) and super-resolution optical fluctuation imaging (SOFI). Neuropathol Appl Neurobiol 44:417-426
Krotee, Pascal; Griner, Sarah L; Sawaya, Michael R et al. (2018) Common fibrillar spines of amyloid-? and human islet amyloid polypeptide revealed by microelectron diffraction and structure-based inhibitors. J Biol Chem 293:2888-2902
Prieto, G Aleph; Tong, Liqi; Smith, Erica D et al. (2018) TNF? and IL-1? but not IL-18 Suppresses Hippocampal Long-Term Potentiation Directly at the Synapse. Neurochem Res :
Krotee, Pascal; Rodriguez, Jose A; Sawaya, Michael R et al. (2017) Atomic structures of fibrillar segments of hIAPP suggest tightly mated ?-sheets are important for cytotoxicity. Elife 6:
Hernandez, Michael X; Jiang, Shan; Cole, Tracy A et al. (2017) Prevention of C5aR1 signaling delays microglial inflammatory polarization, favors clearance pathways and suppresses cognitive loss. Mol Neurodegener 12:66
Thielens, Nicole M; Tedesco, Francesco; Bohlson, Suzanne S et al. (2017) C1q: A fresh look upon an old molecule. Mol Immunol 89:73-83
Prieto, G Aleph; Trieu, Brian H; Dang, Cindy T et al. (2017) Pharmacological Rescue of Long-Term Potentiation in Alzheimer Diseased Synapses. J Neurosci 37:1197-1212
Carlos, Anthony J; Tong, Liqi; Prieto, G Aleph et al. (2017) IL-1? impairs retrograde flow of BDNF signaling by attenuating endosome trafficking. J Neuroinflammation 14:29

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