Aberrant Notch signaling is implicated in several cancers, including breast cancer. However, the mechanistic details of the specific receptors and function of ligand-mediated Notch signaling that promote breast cancer remains elusive. In our studies we show that DLL1, a Notch signaling ligand, is significantly overexpressed in ERα+ luminal breast cancer. Intriguingly, DLL1 overexpression correlates with poor pr...
The Notch-signaling ligand DLL1 has emerged as an important player and promising therapeutic target in breast cancer (BC). DLL1-induced Notch activation promotes tumor cell proliferation, survival, migration, angiogenesis and BC stem cell maintenance. In BC, DLL1 overexpression is associated with poor prognosis, particularly in estrogen receptor-positive (ER+) subtypes. Directed therapy in early and advanced BC...
A major challenge in cystic fibrosis (CF) research is applying mutation-specific therapy to individual patients with diverse and rare CF transmembrane conductance regulator (CFTR) genotypes. Read-through agents are currently the most promising approach for Class I mutations that introduce premature termination codons (PTCs) into CFTR mRNA. However, variations in degradation of PTC containing transcripts by nons...
Respiratory infections by bacteria of the Burkholderia cepacia complex (Bcc) remain an important cause of morbidity and mortality among cystic fibrosis patients, highlighting the need for novel therapeutic strategies. In the present work we have studied the B. cenocepacia protein BCAL2958, a member of the OmpA-like family of proteins, demonstrated as highly immunogenic in other pathogens and capable of elicitin...
RESUMO Introdução: Passaram mais de sete décadas desde a primeira descrição da fibrose quística enquanto doença fatal. Desde então, a assistência clínica destes doentes em Centros Especializados, assim como os progressos científicos na investigação, refletiram-se significativamente na melhoria da qualidade de vida e da esperança média de vida e como resultado os doentes atingem a idade adulta, o que inicialment...
Nos últimos anos tem sido descrita, no mundo ocidental, uma redução da incidência da pneumonia aguda da comunidade (PAC) nas crianças, parodoxalmente associada a maior gravidade dos casos internados. O presente estudo pretendeu caracterizar os casos de PAC internados e compará -los com um estudo anterior a 2001. Recolhemos dados referentes a 63 internamentos, durante seis meses. Houve predomínio do grupo dos 0 ...