Mise à jour des mécanismes contrôlant l'expression génique du collagène de type I // Revisiting the mechanisms of type I collagen gene expression
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ABG-136301
ADUM-71690 |
Thesis topic | |
| 2026-03-06 | Public funding alone (i.e. government, region, European, international organization research grant) |
Université de Lorraine
Vandoeuvre-lès-Nancy - Grand Est - France
Mise à jour des mécanismes contrôlant l'expression génique du collagène de type I // Revisiting the mechanisms of type I collagen gene expression
facteur transcriptionnel, protéomique, C-BERST, remodelage chromatinien, fibrose
transcriptional factor, proteomics, C-BERST, chromatin remodeling, fibrosis
transcriptional factor, proteomics, C-BERST, chromatin remodeling, fibrosis
Topic description
Le collagène de type I (COL1), principale armature structurale régissant les propriétés mécaniques des tissus chez les vertébrés, a pour bloc élémentaire une protéine hétérotrimèrique codée par deux gènes : col1a1 et col1a2. Sa néosynthèse tient une place centrale dans le métabolisme général, notamment pendant le développement, le vieillissement, mais aussi dans un ensemble de pathologies dégénératives, incluant le cancer, dont le point commun est la fibrose. Les mécanismes régulant la transcription de col1a1/col1a2 n'ont plus été étudié depuis des décennies. Entre temps, des concepts scientifiques et des outils technologiques ont révolutionné la biologie moléculaire. Considérant les premiers, et utilisant les seconds, nous comparerons les localisations sub-nucléaires des loci d'intérêt et identifierons les protéines constituant leur environnement immédiat au sein du noyau, en fonction de l'activité transcriptionnelle. Les méthodes reposent sur des outils moléculaires issus de la technologie Crispr/Cas9, la microscopie de fluorescence et la spectrométrie de masse. Nous pensons révéler de nouveaux acteurs clés de la (co-)régulation transcriptionnelle de col1a1 et col1a2, qui pourraient constituer des cibles thérapeutiques d'avenir.
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Type I collagen (COL1), the main structural framework governing the mechanical properties of connective tissues in vertebrates, is built from of a heterotrimeric protein encoded by two genes: col1a1 and col1a2. Its synthesis plays a central role in general metabolism, particularly during development, ageing, but also in a range of degenerative diseases, including cancer, which share a common feature: fibrosis. The mechanisms regulating the transcription of col1a1/col1a2 have not been studied for decades. Since then, scientific concepts and technological tools have revolutionized molecular biology. Considering the former and using the latter, we will compare the sub-nuclear localizations of loci of interest and identify the proteins that constitute their immediate environment within the nucleus, depending on transcriptional activity. The methods rely on molecular tools derived from CRISPR/Cas9 technology, fluorescence microscopy, local enzymatic labelling and in-depth mass spectrometry. We believe we can reveal new key players and concepts in the transcriptional (co-)regulation of col1a1 and col1a2, which could constitute future therapeutic targets.
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Début de la thèse : 01/10/2026
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Type I collagen (COL1), the main structural framework governing the mechanical properties of connective tissues in vertebrates, is built from of a heterotrimeric protein encoded by two genes: col1a1 and col1a2. Its synthesis plays a central role in general metabolism, particularly during development, ageing, but also in a range of degenerative diseases, including cancer, which share a common feature: fibrosis. The mechanisms regulating the transcription of col1a1/col1a2 have not been studied for decades. Since then, scientific concepts and technological tools have revolutionized molecular biology. Considering the former and using the latter, we will compare the sub-nuclear localizations of loci of interest and identify the proteins that constitute their immediate environment within the nucleus, depending on transcriptional activity. The methods rely on molecular tools derived from CRISPR/Cas9 technology, fluorescence microscopy, local enzymatic labelling and in-depth mass spectrometry. We believe we can reveal new key players and concepts in the transcriptional (co-)regulation of col1a1 and col1a2, which could constitute future therapeutic targets.
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Début de la thèse : 01/10/2026
Funding category
Public funding alone (i.e. government, region, European, international organization research grant)
Funding further details
Concours pour un contrat doctoral
Presentation of host institution and host laboratory
Université de Lorraine
Institution awarding doctoral degree
Université de Lorraine
Graduate school
266 BioSE - Biologie Santé Environnement
Candidate's profile
M2R en biologie, impliquant au minimum la biologie moléculaire ou la culture cellulaire et si possible une expérience de clonage moléculaire et/ou de biologie des ARNs. Idéalement, une expérience concrète en microscopie de fluorescence ou dans l'utilisation de systèmes CRISPR/Cas9 serait bienvenue. Parler anglais sera important pour interagir avec le co-encadrant. Il faudra pour le moins ne pas avoir peur de la bioinformatique.
Master's degree in biology, involving at least molecular biology or cell culture, and ideally experience in molecular cloning and/or RNA biology. Practical experience in fluorescence microscopy or the use of CRISPR/Cas9 systems would be a plus. Speaking English will be essential for communicating with the co-supervisor. At the very least, the candidate should not be afraid of boinformatics.
Master's degree in biology, involving at least molecular biology or cell culture, and ideally experience in molecular cloning and/or RNA biology. Practical experience in fluorescence microscopy or the use of CRISPR/Cas9 systems would be a plus. Speaking English will be essential for communicating with the co-supervisor. At the very least, the candidate should not be afraid of boinformatics.
2026-06-01
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