1. Genetic variation across RNA metabolism and cell death gene networks is implicated in the semantic variant of primary progressive aphasia
- Author
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Bonham, L.W., Steele, N.Z.R., Karch, C.M., Broce, I., Geier, E.G., Wen, N.L., Momeni, P., Hardy, J., Miller, Z.A., Gorno-Tempini, M.L., Hess, C.P., Lewis, P., Miller, B.L., Seeley, W.W., Manzoni, C., Desikan, R.S., Baranzini, S.E., Ferrari, R., Yokoyama, J.S., Hernandez, D.G., Nalls, M.A., Rohrer, J.D., Ramasamy, A., Kwok, J.B.J., Dobson-Stone, C., Schofield, P.R., Halliday, G.M., Hodges, J.R., Piguet, O., Bartley, L., Thompson, E., Haan, E., Hernández, Isabel, Ruiz, A., Boada, M., Borroni, B., Padovani, A., Cruchaga, C., Cairns, N.J., Benussi, L., Binetti, G., Ghidoni, R., Forloni, G., Albani, Diego, Galimberti, D., Fenoglio, C., Serpente, M., Scarpini, E., Clarimón, J., Lleó, Alberto, Blesa, R., Landqvist Waldö, M., Nilsson, K., Nilsson, C., Mackenzie, I.R.A., Hsiung, G.Y.R., Mann, D.M.A., Grafman, J., Morris, C.M., Attems, J., Griffiths, T.D., McKeith, I.G., Thomas, A.J., Pietrini, P., Huey, E.D., Wassermann, E.M., Baborie, A., Jaros, E., Tierney, M.C., Pastor, Pau, Razquin, C., Ortega-Cubero, S., Alonso, E., Perneczky, R., Diehl-Schmid, J., Alexopoulos, P., Kurz, A., Rainero, I., Rubino, E., Pinessi, L., Rogaeva, E., St George-Hyslop, P., Rossi, G., Tagliavini, F., Giaccone, G., Rowe, J.B., Schlachetzki, J.C.M., Uphill, J., Collinge, J., Mead, S., Danek, A., Van Deerlin, V.M., Grossman, M., Trojanowski, J.Q., van der Zee, J., Cruts, M., Van Broeckhoven, C., Cappa, S.F., Leber, I., Hannequin, D., Golfier, V., Vercelletto, M., Brice, A., Nacmias, B., Sorbi, Sandro, Bagnoli, S., Piaceri, I., Nielsen, J.E., Hjermind, L.E., Riemenschneider, M., Mayhaus, M., Ibach, B., Gasparoni, G., Pichler, S., Gu, W., Rossor, M.N., Fox, N.C., Warren, J.D., Spillantini, M.G., Morris, H.R., Rizzu, P., Heutink, P., Snowden, J.S., Rollinson, S., Richardson, A., Gerhard, A., Bruni, A.C., Maletta, R., Frangipane, F., Cupidi, C., Bernardi, L., Anfossi, M., Gallo, M., Conidi, M.E., Smirne, N., Rademakers, R., Baker, M., Dickson, Dennis W., Graff-Radford, N.R., Petersen, R.C., Knopman, D., Josephs, K.A., Boeve, B.F., Parisi, J.E., Karydas, A.M., Rosen, H., van Swieten, J.C., Dopper, E.G.P., Seelaar, H., Pijnenburg, Y.A.L., Scheltens, Philip, Logroscino, G., Capozzo, R., Novelli, V., Puca, A.A., Franceschi, M., Postiglione, A., Milan, G., Sorrentino, P., Kristiansen, M., Chiang, H.H., Graff, C., Pasquier, F., Rollin, A., Deramecourt, V., Lebouvier, T., Kapogiannis, D., Ferrucci, L., Pickering-Brown, S., Singleton, A.B., Universitat Autònoma de Barcelona, Broce, Iris [0000-0003-4932-1430], Miller, Zachary A. [0000-0002-5991-3053], Lewis, Patrick [0000-0003-4537-0489], Baranzini, Sergio E. [0000-0003-0067-194X], Apollo - University of Cambridge Repository, Int FTD-Genomics Consortium, Neurology, Amsterdam Neuroscience - Neurodegeneration, Divisions, and CCA - Imaging and biomarkers
- Subjects
0301 basic medicine ,Aging ,Transcription, Genetic ,Gene regulatory network ,lcsh:Medicine ,Genome-wide association study ,Apoptosis ,Neurodegenerative ,Primary progressive aphasia ,Cohort Studies ,0302 clinical medicine ,692/617/375/132 ,Risk Factors ,Databases, Genetic ,2.1 Biological and endogenous factors ,Gene Regulatory Networks ,Protein Interaction Maps ,Aetiology ,lcsh:Science ,Multidisciplinary ,Neurodegeneration ,Neurodegenerative diseases ,article ,Frontotemporal lobar degeneration ,631/208/205 ,Single Nucleotide ,Phenotype ,ddc ,3. Good health ,DNA-Binding Proteins ,Frontotemporal Dementia (FTD) ,692/617/375/365 ,Neurological ,Medical genetics ,38/39 ,Engineering sciences. Technology ,Transcription ,Biotechnology ,medicine.medical_specialty ,Computational biology ,Biology ,Polymorphism, Single Nucleotide ,03 medical and health sciences ,Databases ,Rare Diseases ,Genetic ,medicine ,Aphasia ,Acquired Cognitive Impairment ,Genetics ,Humans ,Primary Progressive Nonfluent Aphasia ,Polymorphism ,Gene ,Genetic association study ,International FTD-Genomics Consortium ,lcsh:R ,Human Genome ,Neurosciences ,medicine.disease ,Brain Disorders ,631/208/199 ,030104 developmental biology ,Gene Expression Regulation ,RNA ,lcsh:Q ,Dementia ,Gene expression ,030217 neurology & neurosurgery ,Genome-Wide Association Study - Abstract
The semantic variant of primary progressive aphasia (svPPA) is a clinical syndrome characterized by neurodegeneration and progressive loss of semantic knowledge. Unlike many other forms of frontotemporal lobar degeneration (FTLD), svPPA has a highly consistent underlying pathology composed of TDP-43 (a regulator of RNA and DNA transcription metabolism). Previous genetic studies of svPPA are limited by small sample sizes and a paucity of common risk variants. Despite this, svPPA’s relatively homogenous clinicopathologic phenotype makes it an ideal investigative model to examine genetic processes that may drive neurodegenerative disease. In this study, we used GWAS metadata, tissue samples from pathologically confirmed frontotemporal lobar degeneration, and in silico techniques to identify and characterize protein interaction networks associated with svPPA risk. We identified 64 svPPA risk genes that interact at the protein level. The protein pathways represented in this svPPA gene network are critical regulators of RNA metabolism and cell death, such as SMAD proteins and NOTCH1. Many of the genes in this network are involved in TDP-43 metabolism. Contrary to the conventional notion that svPPA is a clinical syndrome with few genetic risk factors, our analyses show that svPPA risk is complex and polygenic in nature. Risk for svPPA is likely driven by multiple common variants in genes interacting with TDP-43, along with cell death,x` working in combination to promote neurodegeneration.
- Published
- 2019