{"id":130383,"global_id":"www.bordeaux-neurocampus.fr\/en\/?id=130383","global_id_lineage":["www.bordeaux-neurocampus.fr\/en\/?id=130383"],"author":"108","status":"publish","date":"2021-01-21 15:59:41","date_utc":"2021-01-21 14:59:41","modified":"2021-01-22 12:13:45","modified_utc":"2021-01-22 11:13:45","url":"https:\/\/www.bordeaux-neurocampus.fr\/en\/event\/soutenance-de-these-tomas-jorda-siquier\/","rest_url":"https:\/\/www.bordeaux-neurocampus.fr\/en\/wp-json\/tribe\/events\/v1\/events\/130383","title":"Thesis defense – <\/span>Tomas Jord\u00e0-Siquier","description":"

[vc_row][vc_column width=”2\/3″][vc_column_text]Centre Broca Nouvelle-Aquitaine and via Zoom<\/strong><\/p>\n

Physiological and pathological roles of the amyloid precursor protein at the presynapse.<\/strong><\/p>\n

Thesis supervisor: Ga\u00ebl Barthet<\/a><\/p>\n

Abstract<\/h3>\n

Alzheimer\u2019s disease (AD) is a progressive neurodegenerative disease which affects 47 million people worldwide, being the most prominent type of dementia. The etiology of the disease is unknown but genetic evidence from the familial form of the disease indicates that the amyloid precursor protein (APP) plays a key role in the pathology. The aim of my thesis was to study the physiological and pathological functions of APP related to its location at the presynapse. I studied the consequences on presynaptic mechanisms of the genetic deletion of APP and presenilin, the catalytic subunit of \u03b3-secretase and intramembrane protease which cleaves APP. I then investigated possible alterations of APP, other than the amyloid peptides in AD brain, discovering that APP dramatically accumulates together with presynaptic proteins around dense-core amyloid plaques in human AD brain. Altogether, the data I collected during my thesis supports a role of presynaptic APP in physiology and in AD pathology and highlights APP accumulations as a pathological site where presynaptic proteins are mis-distributed.<\/p>\n

Publications<\/h3>\n

Under review: APP accumulates around dense-core amyloid plaques with presynaptic proteins in Alzheimer\u2019s disease brain
\nTom\u00e0s Jord\u00e0-Siquier, Melina Petrel, Vladimir Kouskoff, Fabrice Cordeli\u00e8res, Susanne Frykman, Ulrike M\u00fcller, Christophe Mulle, Ga\u00ebl Barthet
\ndoi: https:\/\/doi.org\/10.1101\/2020.10.16.342196<\/a><\/p>\n

Under review: Distinctive alteration of presynaptic proteins in the outer molecular layer of the dentate gyrus in Alzheimer\u2019s disease
\nTom\u00e1s Jord\u00e1-Siquier, Hazal Haytural, Bengt Winblad, Christophe Mulle, Lars O. Tjernberg, Ann-Charlotte Granholm, Susanne Frykman, Ga\u00ebl Barthet
\ndoi: https:\/\/doi.org\/10.1101\/2020.10.06.327833<\/a><\/p>\n

Haytural H, Lundgren JL, K\u00f6se TB, Jord\u00e0-Siquier T, Kalcheva M, Seed Ahmed M, Winblad B, Sundstr\u00f6m E, Barthet G, Tjernberg LO, Frykman S. Non-specific Detection of a Major Western Blotting Band in Human Brain Homogenates by a Multitude of Amyloid Precursor Protein Antibodies. Front Aging Neurosci. 2019 Oct 9;11:273<\/p>\n

Presenilin-mediated cleavage of APP regulates synaptotagmin-7 and presynaptic plasticity
\nBarthet G, Jord\u00e0-Siquier T, Rumi-Masante J, Bernadou F, M\u00fcller U, Mulle C. . Nat Commun. 2018 Nov 14;9(1):4780.<\/p>\n

Jury<\/h3>\n

Frederic Checler
\nJochen Herms
\nAntonia Gutierrez
\nEniko Kovari[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_column_text]\"\"<\/a><\/strong><\/p>\n

Tomas Jord\u00e0-Siquier
\n<\/strong>Team Mulle
\nIINS[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","excerpt":"

Physiological and pathological roles of the amyloid precursor protein at the presynapse.<\/p>","slug":"soutenance-de-these-tomas-jorda-siquier","image":false,"all_day":false,"start_date":"2021-02-25 09:30:00","start_date_details":{"year":"2021","month":"02","day":"25","hour":"09","minutes":"30","seconds":"00"},"end_date":"2021-02-25 09:30:00","end_date_details":{"year":"2021","month":"02","day":"25","hour":"09","minutes":"30","seconds":"00"},"utc_start_date":"2021-02-25 08:30:00","utc_start_date_details":{"year":"2021","month":"02","day":"25","hour":"08","minutes":"30","seconds":"00"},"utc_end_date":"2021-02-25 08:30:00","utc_end_date_details":{"year":"2021","month":"02","day":"25","hour":"08","minutes":"30","seconds":"00"},"timezone":"Europe\/Paris","timezone_abbr":"CET","cost":"","cost_details":{"currency_symbol":"","currency_position":"prefix","values":[]},"website":"","show_map":false,"show_map_link":false,"hide_from_listings":false,"sticky":false,"featured":false,"categories":[{"name":"Thesis","slug":"theses-en","term_group":0,"term_taxonomy_id":187,"taxonomy":"tribe_events_cat","description":"","parent":0,"count":254,"filter":"raw","id":187,"urls":{"self":"https:\/\/www.bordeaux-neurocampus.fr\/en\/wp-json\/tribe\/events\/v1\/categories\/187","collection":"https:\/\/www.bordeaux-neurocampus.fr\/en\/wp-json\/tribe\/events\/v1\/categories"}}],"tags":[],"venue":[],"organizer":[],"json_ld":{"@context":"http:\/\/schema.org","@type":"Event","name":"<span>Thesis defense – <\/span>Tomas Jord\u00e0-Siquier","description":"<p>Physiological and pathological roles of the amyloid precursor protein at the presynapse.<\/p>\\n","url":"https:\/\/www.bordeaux-neurocampus.fr\/en\/event\/soutenance-de-these-tomas-jorda-siquier\/","startDate":"2021-02-25T09:30:00+01:00","endDate":"2021-02-25T09:30:00+01:00","performer":"Organization"}}