Non-coding RNAs in thoracic disease: Barrett's esophagus and esophageal adenocarcinoma.

Esophageal adenocarcinoma (EAC) is a highly aggressive malignancy with increasing incidence and poor survival rates, primarily due to late-stage diagnosis. This cancer often develops from Barrett's Esophagus (BE), a precancerous condition linked to chronic gastroesophageal reflux disease (GERD). The transition from BE to EAC is a complex multistep process involving numerous genetic, epigenetic, and molecular changes that lead to the malignant transformation of the esophageal epithelium. Despite advancements in understanding the molecular mechanisms underlying EAC, early detection and effective treatment options remain limited, highlighting an urgent need for innovative diagnostic and therapeutic strategies. Recent research has focused on non-coding RNAs (ncRNAs), which play crucial roles in regulating gene expression and cellular processes relevant to cancer progression. Various types of ncRNAs, including microRNAs, long non-coding RNAs, and circular RNAs, have been implicated in the development of BE and EAC by modulating key signaling pathways such as Wnt/β-catenin and NF-κB. Additionally, ncRNAs are stable in biological fluids, presenting opportunities for their use as non-invasive biomarkers for early detection and monitoring of EAC. This review aims to elucidate the involvement of ncRNAs in the progression from BE to EAC, their potential as therapeutic targets, and their emerging roles in intercellular communication. We will also discuss the challenges in translating ncRNA research into clinical applications, emphasizing their promise in revolutionizing early detection and treatment strategies for EAC.