O Albania Division of Neurosciences, Mario Negri CD11c/Integrin alpha X Proteins site Institute for Pharmacological Research IRCCS, Milan, Italy; bMolecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy; c Department of Clinical Neurosciences, Faculty of Brain Sciences, University College London Institute of Neurology, London, UKacPOSTECH, Pohang, Republic of Korea; Division of Urology, Seoul St. Mary’s Hospital, The Catholic University of Korea, Seoul, Republic of Korea; Division of Laboratory Medicine, Mary’s Hospital, The Catholic University of Korea, Seoul, Republic of Korea, Seoul; dDepartment of Mechanical Engineering, POSTECH, Pohang, Republic of KoreabIntroduction: Analysing extracellular vesicles (EVs) is definitely an desirable indicates in prostate cancer diagnosis. Nonetheless, current methods of EVs isolation have low efficiency, purity and lengthy process time, which induce low diagnostic capacity. To strategy the issues, we adapt a two-phase technique to diagnose prostate cancer by isolating EVs from patients’ urine. Applying the twophase technique, prostate hyperplasia (BPH) patients and prostate cancer (PCA) patients had been diagnosed, and theIntroduction: Extracellular vesicles (EVs) represent an ideal source of biomarkers on account of their function in cellular communication and their capability to carry protein aggregates. By far the most investigated EVs are exosomes, active entities secreted from cells and able to cross the blood brain barrier. Numerous neurodegeneration-involved molecules could undergo intercellular spreading by means of exosome release. In Alzheimer’s disease (AD), just before clinical signs seem, a number of proteins implicated in exo- and endocytic pathways are Gastrin Proteins Species altered. In thisJOURNAL OF EXTRACELLULAR VESICLESscenario, the identification of a correlation in between variations in proteins carried by EVs along with the progression of AD is definitely the major aim of our project. Techniques: We performed exosome isolation and characterization from H4-SW glioma cells (a cell model featuring mutated -amyloid overexpression), as well as in mouse(triple-transgenic mouse model for familial AD) and human-plasma samples (Mild Cognitive Impairment (MCI) and AD subjects). In every case, a differential centrifugation protocol was applied and exosomes were then characterized utilizing Nanoparticle Tracking Evaluation together with the NanoSight. We then explored exosome content material, particularly Amyloid Precursor Protein (APP) and its proteolytic fragments, Microtubule Associated Protein Tau (tau), Progranulin (PGRN protein), Soluble Triggering Receptor Expressed on Myeloid Cells two (sTREM2) and synuclein (-syn), using Western blot and ELISA. L1CAM and CD63 were evaluated to define the neural-derived exosomes amount in human samples. All the samples had been collected after ethical committee approval respecting Helsinki’s declaration. Informed consents have been supplied by all the subjects. Results: Our preliminary outcomes show that APP, PGRN and sTREM2 are carried by H4- and human plasmaderived EVs. H4-SW cell-culture medium and 3Tg mouse plasma had a decrease in the EVs number release (110e8 EVs/mL) in comparison to manage (710e8 EVs/mL). This decrease was not found in human plasma samples. Summary/Conclusion: EVs purified from H4-glioma cellular AD model, 3xTg mouse-, MCI- and ADplasma samples carry proteins relevant for neurodegenerative diseases (NDs). EVs release is lowered in cellular and animal AD-models. Funding: Horizon 2020 Marie Sklodowska-Curie Innovative Instruction Networks Blood Biomarker-ba.