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Analyzing the role of cancer-associated adipocytes in brest tumor metastasis

Authors: Garrido Jiménez, Laura;

Analyzing the role of cancer-associated adipocytes in brest tumor metastasis

Abstract

El microambient tumoral del càncer de mama inclou adipòcits i fibroblasts. Els adipòcits, en contacte amb les cèl·lules tumorals i fibroblasts, pateixen lipòlisi i desdiferenciació. Aquesta tesi demostra que els adipòcits associats al tumor (CAA) canvien l'expressió gènica cap a fenotips progenitors, macròfags i fibroblasts, alhora que disminueixen l'expressió de gens relacionats amb el metabolisme lipídic i l'adipogènesi. Aquests canvis donen suport a la migració i la invasió de cèl·lules tumorals de mama. Tot i que l'acumulació exògena de lípids no afavoreix la migració, la captació de lípids, la lipòlisi i el catabolisme són essencials. Els adipòcits alteren el metabolisme de les cèl·lules tumorals, augmentant el consum de glucosa i la producció d'espècies reactives d'oxigen, i induint una transició epiteli- mesènquima parcial marcada per l’increment de Snail1. Aquests resultats posen de manifest la diafonia entre els adipòcits i les cèl·lules tumorals de mama, afavorint la progressió del tumor.

In breast cancer, the tumor microenvironment includes adipocytes and fibroblasts. When in contact with breast tumor cells, adipocytes undergo lipolysis and dedifferentiation. This thesis demonstrates that cancer-associated adipocytes (CAAs) shift gene expression towards progenitor, macrophage, and fibroblast phenotypes while decreasing the expression of genes related to lipid metabolism and adipogenesis. These changes support breast tumor cell migration and invasion. Exogenous lipid accumulation in tumor cells does not promote migration, but lipid uptake, lipolysis and catabolism are essential. Adipocytes alter tumor cell metabolism, increasing glucose consumption and reactive oxygen species production, and induce a partial epithelial to mesenchymal transition, with a Snail1 upregulation. Therefore, these findings highlight the crosstalk between adipocytes and breast tumor cells that promotes tumor progression.

Programa de Doctorat en Biomedicina

Country
Spain
Keywords

Epithelial to mesenchymal transition, Invasion, Snail1, 616, Transició epiteli-mesènquima, Adipòcits associats al càncer, Cancer-associated adipocytes, Migració, Migration, Invasió

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green
Related to Research communities
Cancer Research