{"id":4894,"date":"2019-01-24T15:48:23","date_gmt":"2019-01-24T20:48:23","guid":{"rendered":"https:\/\/biomol.umontreal.ca\/research\/les-professeurs\/oeffinger-marlene-ph-d\/"},"modified":"2026-02-01T15:54:32","modified_gmt":"2026-02-01T20:54:32","slug":"oeffinger-marlene-ph-d","status":"publish","type":"page","link":"https:\/\/biomol.umontreal.ca\/en\/research\/les-professeurs\/oeffinger-marlene-ph-d\/","title":{"rendered":"Oeffinger, Marlene, Ph.D."},"content":{"rendered":"<h3>Coordonn\u00e9es<\/h3>\n<p>IRCM<br \/>\nT 514 987-5668<br \/>\n<a href=\"mailto:marlene.oeffinger@ircm.qc.ca\">marlene.oeffinger@ircm.qc.ca<\/a><br \/>\n<a href=\"http:\/\/oeffingerlab.org\/\" target=\"_blank\" rel=\"noopener\">http:\/\/oeffingerlab.org\/<\/a><\/p>\n<hr\/>\n<div class=\"one-half first \">\n<h2>Axes de recherche<\/h2>\n<ul>\n<li>Interactions prot\u00e9iques<\/li>\n<li>G\u00e9nomique<\/li>\n<li>Prot\u00e9omique<\/li>\n<li>Biologie des syst\u00e8mes<\/li>\n<\/ul>\n<h2>Description de la recherche<\/h2>\n<p>Les ARN jouent un r\u00f4le bien plus important qu&#8217;on ne le pensait auparavant : ils ne sont pas seulement vecteurs d&#8217;informations g\u00e9n\u00e9tiques mais peuvent aussi \u00eatre des \u00e9l\u00e9ments r\u00e9gulateurs de l&#8217;expression des g\u00e8nes. Apr\u00e8s leur transcription, les mol\u00e9cules d\u2019ARN, toutes esp\u00e8ces confondues, s&#8217;assemblent en complexes ribonucl\u00e9oprot\u00e9iques (RNP) pour \u00eatre modifi\u00e9es, repli\u00e9es et transport\u00e9es vers leur destination finale dans la cellule. Cependant, la maturation de chacune des esp\u00e8ces d&#8217;ARN emprunte une voie diff\u00e9rente d\u00e9finie par des facteurs de traitement tr\u00e8s sp\u00e9cifiques propres \u00e0 une esp\u00e8ce d&#8217;ARN donn\u00e9e. La maturation d\u2019un ARN forme ainsi des r\u00e9seaux d&#8217;interactions ARN-prot\u00e9ine dynamiques impliquant des centaines de prot\u00e9ines d\u00e9finissant, entre autre, l&#8217;ordre des \u00e9v\u00e9nements de maturation. Pour comprendre le processus global et le r\u00f4le des RNPs et des ARNs, il est essentiel de d\u00e9finir comment ces \u00e9v\u00e9nements sont coordonn\u00e9s dans l\u2019espace et dans le temps et comment ils sont li\u00e9s \u00e0 d\u2019autres processus cellulaires physiologiques et pathologiques.<\/p>\n<p>Le laboratoire Oeffinger \u00e9tudie la r\u00e9gulation et la dynamique des voies de maturation des ARNs. L&#8217;objectif principal est de d\u00e9terminer, dans le temps et l\u2019espace, l&#8217;assemblage et la coordination des facteurs de maturation des ARNs, ainsi que d&#8217;identifier les m\u00e9canismes de contr\u00f4lant le traitement, la modification et l&#8217;assemblage de diff\u00e9rents ARNs. Par cons\u00e9quent, nous combinons des approches de prot\u00e9omique, de RNomique, biochimiques et informatiques pour comprendre la dynamique des voies de maturation des ARNs dans diff\u00e9rents contextes cellulaires et dans diff\u00e9rents organismes.<\/p>\n<p>De cette fa\u00e7on, nous apportons une meilleure compr\u00e9hension sur la maturation des ARNs et son incidence sur d&#8217;autres processus cellulaires, notamment les dommages et la r\u00e9paration de l&#8217;ADN, ainsi que sur l&#8217;apparition de diverses maladies neurod\u00e9g\u00e9n\u00e9ratives telles que la maladie d&#8217;Alzheimer et la SLA. Nous nous int\u00e9ressons \u00e9galement \u00e0 l\u2019\u00e9tude de la traduction: comment diff\u00e9rents ARNm peuvent n\u00e9cessiter des ribosomes-niches (\u00abribosomes sp\u00e9cialis\u00e9s\u00bb) pour une traduction optimale, c&#8217;est-\u00e0-dire sp\u00e9cifique d\u2019un tissu.<\/p>\n<\/div>\n<div class=\"one-half  \">\n<h2>Research axis<\/h2>\n<ul>\n<li>Protein Interactions<\/li>\n<li>Genomics<\/li>\n<li>Proteomics<\/li>\n<li>Systems Biology<\/li>\n<\/ul>\n<h2>Research description<\/h2>\n<p>RNAs play an even more significant role within cells than previously thought; they are not only the conveyer of genetic information but can themselves be regulators of gene expression. All RNA species share the fact that, after transcription, they assemble into ribonucleoprotein (RNP) complexes to get modified, processed and transported to their final destination within the cell. However, for each of these RNA species, this maturation occurs by a different pathway defined by very specific processing factors, forming dynamic RNA-protein interaction networks that implicate hundreds of proteins and define the order of maturation events. Critical to our understanding of the overall process and role of RNPs and RNAs is to know how these events are coordinated in space and time, and how they are linked to other cellular processes in health and disease.<\/p>\n<p>The Oeffinger laboratory studies the regulation and dynamics of RNA maturation pathways. The main focus is to determine the temporal and spatial assembly and coordination of RNA maturation factors, as well as to identify the underlying control mechanisms that drive the processing, modification, and assembly of different RNAs. We, therefore, combine proteomic, RNomic, biochemical and computational approaches to build a dynamic picture of RNA maturation pathways in different cellular contexts and organisms to yield important information on how RNA maturation is linked to other cellular processes including DNA damage and repair, development as well as onset of various neurodegenerative diseases such as Alzheimer\u2019s Disease and ALS, and how different mRNAs may require niche-ribosomes (\u2019specialized ribosomes\u2019) for their optimal, i.e. tissue-specific, translation.<\/p>\n<\/div>\n<hr\/>\n<h3>Publications<\/h3>\n<ul>\n<li>Lessard F, Igelmann S, <u>Trahan C<\/u>, Huot G, Saint-Germain E, Mignacca L, Del Toro N, Lopes-Paciencia S, Le Calv\u00e9 B, Montero M, Desch\u00eanes-Simard X, Bury M, Moiseeva O, Rowell MC, Zorca CE, Zenklusen D, Brakier-Gingras L, Bourdeau V, <strong>Oeffinger M<\/strong> and Ferbeyre G. (2018) Ribosome biogenesis defects in senescence reveal a novel checkpoint to control CDK4. <em>Nat Cell Biology<\/em> June 25.<\/li>\n<li><u>Scott DD<\/u>, <em><u>Trahan C<\/u><\/em>, <u>Zindy PJ<\/u>, <u>Aguilar LC<\/u>, <u>Delubac<\/u> M, Van Nostrand EL, Adivarahan S, <u>Wei KE<\/u>, Zenklusen D, Yeo GW and <strong>Oeffinger M.<\/strong> (2017) Nol12 is a multifunctional endonuclease at the nexus of RNA and DNA metabolism. <em> Acids Res. <\/em>EPub Oct 23. doi: 10.1093\/nar\/gkx963<\/li>\n<li>Burlacu E, Lackmann F, <u>Aguilar LC<\/u>, Berlikoc S, van Nues R, <u>Trahan C<\/u>, Hector RD, Whiteley ND, Cockroft SL, Wieslander L, <strong>Oeffinger M<\/strong> and Granneman S. (2017) High through-put RNA structure probing reveals critical folding events during early stages of ribosome biogenesis in yeast. <em>Nat Comm. <\/em>Sep 28;8(1):714.<\/li>\n<\/ul>\n<hr\/>\n<h3><a href=\"https:\/\/www.ircm.qc.ca\/en\/researchers\/marlene-oeffinger\" target=\"_blank\" rel=\"noopener\">Consultez le site web institutionnel du chercheur<\/a><\/h3>\n<hr\/>\n<ul><\/ul>\n<ol start=\"4\"><\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Coordonn\u00e9es IRCM T 514 987-5668 marlene.oeffinger@ircm.qc.ca http:\/\/oeffingerlab.org\/ Publications Lessard F, Igelmann S, Trahan C, Huot G, Saint-Germain E, Mignacca L, Del Toro N, Lopes-Paciencia S, Le Calv\u00e9 B, Montero M, [&hellip;]<\/p>\n","protected":false},"author":216,"featured_media":0,"parent":3557,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-4894","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.0 - 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