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<dc:title xml:lang="fr">Étude du mécanisme d’action de la MMP11 dans le cancer du sein</dc:title>
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<dc:subject xml:lang="fr">MMP11</dc:subject>
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<dc:subject xml:lang="fr">Progression tumorale</dc:subject>
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<dc:subject xml:lang="en">, tumor microenvironment</dc:subject>
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<dcterms:abstract xml:lang="fr">Notre équipe a identifié la métalloprotéase matricielle 11 (MMP11) comme étant une protéase qui participe à la progression tumorale par son activité protéolytique. Mes travaux de thèse ont permis d’apporter des éléments de compréhension sur le mécanisme d’action de la MMP11 dans la progression tumorale du cancer du sein par des approches in vitro et in vivo. Une étude d’interaction fonctionnelle a révélé que la MMP11 semble avoir une action protéolytique sur la MMP2, une autre MMP fonctionnellement associée aux phénomènes invasifs rencontrés lors de la progression tumorale. L’étude fonctionnelle de la MMP11 dans le cancer sur différents modèles précliniques de cancérogenèse mammaire a montré que la MMP11 favorise la croissance tumorale en intervenant dans plusieurs voies de signalisation impliquées dans la reprogrammation métabolique des cellules cancéreuses, leur donnant ainsi un avantage de survie et des propriétés prolifératives. Plus précisément, la MMP11 sécrétée par les adipocytes de la glande mammaire favoriserait la croissance tumorale en remodelant le microenvironnement tumoral. A long terme, la compréhension détaillée du mécanisme d’action moléculaire de la MMP11 permettra la mise au point d’une thérapie ciblée contre la MMP11.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Our team had identified matrix metalloproteinase 11 (MMP11) as a protease participating to tumor progression by using its proteolytic activity. My thesis work has provided insights into the mechanism of action of MMP11 in breast cancer tumor progression through in vitro and in vivo approaches. A functional interaction study revealed that MMP11 has a potential proteolytic action on MMP2, another MMP functionally associated with invasive phenomena encountered during tumor progression. The functional study of MMP11 in different preclinical models of breast carcinogenesis has shown that MMP11 promotes tumor growth by acting on several signaling pathways involved in the metabolic reprogramming of cancer cells, thus sustaining survival and proliferation. Specifically, MMP11 secreted by mammary gland adipocytes could promote tumor growth by remodeling the tumor microenvironment. In the long term, a detailed understanding of the molecular mechanism of action of MMP11 will allow the development of a targeted therapy against MMP11.</dcterms:abstract>
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