Journal
CLINICA CHIMICA ACTA
Volume 551, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cca.2023.117593
Keywords
Biliary tract cancer; Bile; Liquid biopsy; Biomarker
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Biliary tract cancers are heterogeneous in etiology, morphology, and molecular characteristics. Liquid biopsy provides a unique and minimally invasive approach to understand tumor biology, monitor disease progression, and analyze tumor genetic profiles in real-time. Bile, as a promising biological fluid, can be utilized for liquid biopsy by examining various components such as cells, extracellular vesicles, nucleic acids, proteins, and metabolites.
Biliary tract cancers are heterogeneous in etiology, morphology and molecular characteristics thus impacting disease management. Diagnosis is complex and prognosis poor. The advent of liquid biopsy has provided a unique approach to more thoroughly understand tumor biology in general and biliary tract cancers specifically. Due to their minimally invasive nature, liquid biopsy can be used to serially monitor disease progression and allow real-time monitoring of tumor genetic profiles as well as therapeutic response. Due to the unique anatomic location of biliary tract cancer, bile provides a promising biologic fluid for this purpose. This review focuses on the composition of bile and the use of these various components, ie, cells, extracellular vesicles, nucleic acids, proteins and metabolites as potential biomarkers. Based on the disease characteristics and research status of biliary tract cancer, considerable effort should be made to increase understanding of this disease, promote research and development into early diagnosis, develop efficient diagnostic, therapeutic and prognostic markers.
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