ASAP is committed to accelerating the pace of discovery and informing a path to a cure for Parkinson’s disease through collaboration, research-enabling resources, and data sharing. We’ve created this catalog to showcase the research outputs and tools developed by ASAP-funded programs.
Global ubiquitylation analysis of mitochondria in primary neurons identifies physiological Parkin targets following activation of PINK1
Published: Mutations in PINK1 and Parkin are implicated in PD via abherrant mitophagy. The authors identified ubiquitylated substrates of endogenous Parkin in mouse neurons by proteomic analysis. They identified and validated 22 protein targets of Parkin that are conserved in human neurons providing a functional Parkin landscape in neuronal cells. View original preprint.
Global ubiquitylation analysis of mitochondria in primary neurons identifies endogenous Parkin targets following activation of PINK1
Published: Loss-of-function mutations in Parkin cause disruption of mitophagy and are associated with PD. Yet, much of the biology surrounding Parkin function has taken place in artificial cell systems. The authors used human neurons to identify and validate 22 protein targets of Parkin, providing a functional Parkin landscape in neuronal cells.
In situ structural analysis reveals membrane shape transitions during autophagosome formation
Preprint: A hallmark of PD is the failure of quality control mechanisms in the cell, such as autophagy. The authors combined cell biology with correlative cryo-electron tomography in yeast cells to show a high resolution stepwise structural progression of autophagosome biogenesis. Further, they revealed the organelle interactome for growing autophagosomes.
Immunological detection of APP and proteins of the endolysosomal system
This protocol describes the immunological detection of APP and proteins of the endolysosomal system. Here we present a general protocol for immunological detection by Western blotting of APP and proteins of the endolysosomal system, including EEA1, RAB5, PSEN1, LAMP1, LAMP2, TMEM192, and BACE1.
Proteomics workflow for whole cell lysate, endosome, and lysosome fractions
A protocol for sample preparation for LC-MS analysis of whole cell lysates and for lysosomal and endosomal fractions purified by Lyso-IP and Endo-IP.
Quantitative mapping of autophagic cargo during nutrient stress reveals YIPF3-YIPF4 as membrane receptors for Golgiphagy
Preprint: The authors use orthogonal proteomic strategies to provide a global molecular inventory of autophagic cargo during nutrient stress in mammalian cell lines. Through prioritization of autophagic cargo, we identify a heterodimeric pair of membrane-embedded proteins, YIPF3 and YIPF4, as receptors for Golgiphagy.
Deficiency of the frontotemporal dementia gene GRN results in gangliosidosis
Published: Here, the authors discover that PGRN-deficient human cells and murine brains, as well as human frontal lobes from GRN-mutation FTD patients have increased levels of gangliosides, glycosphingolipids that contain sialic acid. Lysosomal ganglioside accumulation may contribute to neuroinflammation and neurodegeneration susceptibility observed in FTD due to PGRN deficiency and other neurodegenerative diseases.
Design and preparation of synthetic reference peptides for APP/Aβ TOMAHAQ proteomics, version 2
This protocol describes the design and preparation of synthetic reference peptides for APP/Aβ TOMAHAQ proteomics.