Effets combinés de l'hypoxie et de la mécanique matricielle sur la physiopathologie de la fibrose pulmonaire // Impact of hypoxia and matrix stiffness on lung fibrosis pathophysiology
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ABG-138599
ADUM-73903 |
Thesis topic | |
| 2026-04-21 | Public funding alone (i.e. government, region, European, international organization research grant) |
Université Grenoble Alpes
Grenoble Cedex 9 - Auvergne-Rhône-Alpes - France
Effets combinés de l'hypoxie et de la mécanique matricielle sur la physiopathologie de la fibrose pulmonaire // Impact of hypoxia and matrix stiffness on lung fibrosis pathophysiology
- Biology
Fibrose pulmonaire, protéomique basée sur la spectrométrie de masse, mécanotransduction, communication cellulaire
Lung fibrosis, MS-based proteomic, mecanotransduction, cell communication
Lung fibrosis, MS-based proteomic, mecanotransduction, cell communication
Topic description
La fibrose pulmonaire idiopathique (FPI) est une maladie chronique, incurable et mortelle, caractérisée par une altération de la barrière alvéolo-capillaire, un dépôt excessif de matrice extracellulaire (MEC), une hypoxie locale et une rigidité accrue du tissu pulmonaire. Ces modifications perturbent les interactions cellulaires et favorisent la transition vers un état pro-fibrosant. Ce projet de thèse vise à comprendre comment l'environnement mécanique (rigidité tissulaire) et chimique (hypoxie) influence le comportement des cellules pulmonaires (plasticité, phénotype) et leurs communications intercellulaires (paracrines et juxtacrines), en conditions in vitro contrôlées. Pour cela, des supports biomimétiques à rigidité variable seront développés, adaptés à la co-culture des principaux types cellulaires de la barrière alvéolo-capillaire. L'étude portera sur la réponse cellulaire à la rigidité et à l'hypoxie, l'analyse du sécrétome, du protéome et l'impact de la communication cellulaire. L'objectif est d'identifier des facteurs pro-fibrosants mécano- et chimio-dépendants, afin de mieux comprendre les mécanismes de progression de la FPI et de proposer de nouvelles cibles thérapeutiques et approches régénératives.
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Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive, and fatal lung disease characterized by excessive extracellular matrix (ECM) deposition, increased tissue stiffness, and localized hypoxia. These alterations disrupt cell–cell interactions within the alveolo-capillary barrier and drive fibrotic progression. This project aims to investigate, under controlled in vitro conditions, the combined impact of mechanical stiffness and hypoxic stress on the fate and phenotype of pulmonary cell types and their intercellular communication. To achieve this, biomimetic polyacrylamide hydrogels with tunable stiffness and specific ECM protein coatings will be developed to support the co-culture of alveolar epithelial cells, endothelial cells, fibroblasts, and macrophages. Cellular responses will be assessed through proteomics, imaging, and secretome profiling. The goal is to identify key mechano- and chemo-dependent pro-fibrotic factors, providing new insights into IPF pathogenesis and opening avenues for targeted therapeutic strategies and lung tissue regeneration.
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Début de la thèse : 01/10/2026
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Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive, and fatal lung disease characterized by excessive extracellular matrix (ECM) deposition, increased tissue stiffness, and localized hypoxia. These alterations disrupt cell–cell interactions within the alveolo-capillary barrier and drive fibrotic progression. This project aims to investigate, under controlled in vitro conditions, the combined impact of mechanical stiffness and hypoxic stress on the fate and phenotype of pulmonary cell types and their intercellular communication. To achieve this, biomimetic polyacrylamide hydrogels with tunable stiffness and specific ECM protein coatings will be developed to support the co-culture of alveolar epithelial cells, endothelial cells, fibroblasts, and macrophages. Cellular responses will be assessed through proteomics, imaging, and secretome profiling. The goal is to identify key mechano- and chemo-dependent pro-fibrotic factors, providing new insights into IPF pathogenesis and opening avenues for targeted therapeutic strategies and lung tissue regeneration.
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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 Grenoble Alpes
Institution awarding doctoral degree
Université Grenoble Alpes
Graduate school
216 ISCE - Ingénierie pour la Santé la Cognition et l'Environnement
Candidate's profile
Etudiant de formation biomédicale, biotechnologie, biologiste/médecin/bioinformaticien/biostatisticien/traitement des données ayant un fort intérêt pour les pathologies humaines et la signalisation cellulaire. Les candidats doivent envoyer leur Cv a emilie.boncoeur@cea.fr, ainsi que les documents associés (diplômes, lettres de recommandations et de motivation, etc..). En outre, ils doivent remplir une candidature en ligne sur le site de l'ADUM.
Biomedical student, biotehcnologist, biologist/physician/bioinformatician/biostatistician/data analyst with a strong interest in human diseases and cellular signaling. Candidates must send their CV to emilie.boncoeur@cea.fr, along with supporting documents (degrees, letters of recommendation and motivation, etc.). In addition, they must complete an online application on the ADUM website.
Biomedical student, biotehcnologist, biologist/physician/bioinformatician/biostatistician/data analyst with a strong interest in human diseases and cellular signaling. Candidates must send their CV to emilie.boncoeur@cea.fr, along with supporting documents (degrees, letters of recommendation and motivation, etc.). In addition, they must complete an online application on the ADUM website.
2026-05-19
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