000009098 001__ 9098 000009098 005__ 20240124114317.0 000009098 0247_ $$2DOI$$a10.6083/xs55mc819 000009098 037__ $$aETD 000009098 245__ $$aDiscovery of early cancer signatures in circulating RNA and extracellular vesicles 000009098 260__ $$bOregon Health and Science University 000009098 269__ $$a2021 000009098 336__ $$aDissertation 000009098 502__ $$bPh.D. 000009098 520__ $$aThis thesis work highlights development and applications for both circulating extracellular vesicles (EV) and cell-free RNA (cf-RNA) toward liquid biopsy based early cancer detection methodologies. Effective detection and monitoring for signatures of oncological disease in a noninvasive manner are urgently needed to reduce the morbidity and mortality caused by cancer. Circulating EVs and cf-RNA are intensely sought after biomarkers in liquid biopsy. Their roles in cell-to-cell communication, ability to reflect phenotypic changes from cells, and tissues of origin are becoming better understood. Despite this, current literatures present key challenges which limit the promise of liquid biopsy based early cancer detection: i) there is a lack of standardized blood processing for multi-omics which minimizes ex-vivo processing artefacts via discerning true in-vivo signatures from ex-vivo artefacts; ii) daily fluctuations and the influence of meal consumption on EV and cf-RNA levels are not clear; iii) a comprehensive study of cf-RNA for cancer detection, pan cancer discernment, and high risk group identification has not been conducted; and iv) the selective packaging of cf-RNA carriers and its association with cancer are unknown. 000009098 542__ $$fIn copyright - single owner 000009098 650__ $$aExtracellular Vesicles$$011111 000009098 650__ $$aNeoplasms$$022758 000009098 650__ $$aBiomarkers$$028395 000009098 650__ $$aLiquid Biopsy$$012229 000009098 650__ $$aCell-Free Nucleic Acids$$012228 000009098 6531_ $$amessenger rna 000009098 691__ $$aSchool of Medicine$$041369 000009098 692__ $$aDepartment of Biomedical Engineering$$041397 000009098 7001_ $$aKim, Hyun J. 000009098 8564_ $$98b4f80b7-dc14-46a4-8be0-58a15cf0b33b$$s11591713$$uhttps://digitalcollections.ohsu.edu/record/9098/files/Kim.Hyun.Ji.2021.pdf 000009098 905__ $$a/rest/prod/xs/55/mc/81/xs55mc819 000009098 909CO $$ooai:digitalcollections.ohsu.edu:9098$$pstudent-work 000009098 980__ $$aTheses and Dissertations