185 documents found, page 1 of 19

Genómica funcional – a investigação do RNA mensageiro e da proteína dele result...

Alternative Splicing at the Crossroad of Inflammatory Bowel Diseases and Coliti...

Simple Summary: Patients with ulcerative colitis (UC) face a higher risk of developing colorectal cancer (CRC) due to chronic inflammation, a known promoter of tumour growth. Here, we review the molecular differences between colitis-associated cancer (CAC) and sporadic CRC, with a focus on “alternative splicing”, a mechanism by which the same gene can produce various protein forms. We explore how inflammation t...

Assessing the impact of TiO2 nanomaterials on intestinal cells: New evidence fo...

Understanding the potential impact of nanomaterials (NMs) on human health requires further investigation into the organ-specific nano-bio interplay at the cellular and molecular levels. We showed increased chromosomal damage in intestinal cells exposed to some of in vitro digested Titanium dioxide (TiO2) NMs. The present study aimed to explore possible mechanisms linked to the uptake, epithelial barrier integri...

Análise de coortes genómicas públicas de larga escala revelam BCL6 como marcado...

O cancro da mama (CM) é a neoplasia maligna mais comum entre mulheres a nível mundial, constituindo uma das principais causas de mortalidade oncológica. Representa uma doença heterogénea, agrupada em subtipos moleculares com implicações prognósticas e terapêuticas distintas. O subtipo Luminal A é o mais prevalente e caracteriza-se por elevada expressão de recetores hormonais (estrogénio e progesterona), baixa t...

Efeitos da aflatoxina B1 na integridade e morfologia de células intestinais

YES1 Kinase Mediates the Membrane Removal of Rescued F508del-CFTR in Airway Cel...

Recent developments in CFTR modulator drugs have had a significant transformational effect on the treatment of individuals with Cystic Fibrosis (CF) who carry the most frequent F508del- CFTR mutation in at least one allele. However, the clinical effects of these revolutionary drugs remain limited by their inability to fully restore the plasma membrane (PM) stability of the rescued mutant channels. Here, we shed...

IL-6 induces the overexpression of genes involved in the regulation of apoptosi...

Introduction: An inflammatory microenvironment was identified as a critical tumor-promoting condition for cells harboring tumor-initiating mutations. Cancer cells respond to pro-inflammatory signals with changes in their transcriptome, namely upregulating the expression of pro-tumorigenic transcript variants. A paradigmatic example is the variant RAC1B. We found increased RAC1B levels in samples from inflammato...

Adverse Outcome Pathways Associated with the Ingestion of Titanium Dioxide Nano...

Titanium dioxide nanoparticles (TiO2-NPs) are widely used, and humans are exposed through food (E171), cosmetics (e.g., toothpaste), and pharmaceuticals. The oral and gastrointestinal (GIT) tract are the first contact sites, but it may be systemically distributed. However, a robust adverse outcome pathway (AOP) has not been developed upon GIT exposure to TiO2-NPs. The aim of this review was to provide an integr...

Pro-Inflammatory Cytokines Trigger the Overexpression of Tumour-Related Splice ...

Simple Summary: Tumours are now known to develop more quickly when the tumour cell mass is located in a tissue that shows signs of chronic inflammation. Under such conditions, inflammatory cells from the surrounding tumour microenvironment provide survival signals to which cancer cells respond. We have previously found that some colorectal tumours overexpress the protein RAC1B that sustains tumour cell survival...

Cellular, Molecular and Genotoxic Effects of Digested Titanium Dioxide Nanomate...

Human exposure to titanium dioxide nanomaterials(TiO2NMs) occurs particularly by ingestion, due to food/food contact materials and consumer products. However, the possibility of adverse effects in gastrointestinal tract is unclear. Aiming to study the impact of digestion on the NMs’ properties and their cellular/molecular effects, two human intestinal cell lines were used, Caco-2 and HT29-MTX-E12. After exposur...