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handle: 10803/666580 , 10261/310290
El càncer de pàncrees representa un dels tumors més agressius, principalment, per la falta de símptomes, la tardana diagnosi i la presència d’un microambient tumoral agressiu. Galectina-1 (Gal-1) exerceix un paper fonamental modulant la interacció tumor-estroma. Concretament, el nostre grup ha demostrat que Gal-1 promou la proliferació tumoral, la metàstasi, l’angiogènesi i l’evasió de l’efecte del sistema immune. Aquesta proteïna es produïda principalment per les cèl·lules estelades del càncer de pàncrees (PSC), tot i així, la seua funció biològica en aquestes cèl·lules continua sent desconeguda. En aquest estudi, hem determinat la importància de Gal-1 en proliferació, migració, invasió, activació i en l’organització de la matriu extracel·lular. Mitjançant anàlisis genètics, hem definit els mecanismes moleculars a través dels quals Gal-1 exerceix les seues funcions. Finalment, considerant que Gal-1 es troba altament expressada en el nucli de les PSC, hem determinat la contribució de Gal-1 nuclear al control de l’expressió gènica.
Pancreatic ductal adenocarcinoma (PDA) is one of the most aggressive tumors; mostly due to its lack of symptoms, resulting in late diagnosis, and also due to the presence of an aggressive tumor microenvironment. Importantly, Galectin-1 (Gal-1) exerts a crucial role in modulating tumor-stroma crosstalk in this disease. In particular, our group has demonstrated that Gal-1 promotes tumor proliferation, metastasis, angiogenesis and immune evasion in PDA. This protein is mainly produced by PDA stellate cells (PSC), however the intrinsic role of this protein in PSC biology is poorly understood. In the present study, we determine the impact of Gal-1 in HPSC proliferation, migration, invasion, activation and extracellular matrix organization. Using high throughput analysis (microarrays) we have defined the molecular mechanisms underlying Gal-1 functions in HPSC. Finally, considering that Gal-1 is highly expressed in HPSC nuclei, we elucidate the involvement of nuclear Gal-1 in the regulation of gene expression in these cells.
Programa de doctorat en Biomedicina
Galectina-1, Pancreatic ductal anedocarcinoma, Galectin-1, Human pancreatic stellate cells, 616.3, Stroma, Extracellular matrix, Estroma, Cèl.lules estelades pancreàtiques humanes, Matriu extracel.lular, Càncer de pàncrees
Galectina-1, Pancreatic ductal anedocarcinoma, Galectin-1, Human pancreatic stellate cells, 616.3, Stroma, Extracellular matrix, Estroma, Cèl.lules estelades pancreàtiques humanes, Matriu extracel.lular, Càncer de pàncrees
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