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Exosomes

Exosomes are small membrane vesicles of endocytic origin secreted by most cell types in vitro. Cells continuously secrete a large number of microvesicles, exosomes and small molecules into the extracellular space. Exosomes have been shown to contain mRNA and miRNA and they are able to mediate communication between cells, by transport of RNA and proteins which can be functionalized in the recipient cell. The ability to transport bioactive cargoes, gives exosomes innate therapeutic potential as a natural drug carrier. Efficient techniques for loading drugs into exosomes to utilize the natural carrier capabilities of these vesicles remains to be elucidated.

Applications of Exosomes

The presence exosomes in blood, saliva, and urine paves the way for the possible application of exosomes as a diagnostic marker for diseases. Many diseases are difficult to detect by the methods and equipment available today and there is a growing demand for development of new non‐invasive methods to detect diseases in early stages. The use of exosomes as markers of disease is being investigated to cement their potential as a non-invasive diagnostic tool for early detection of many diseases, in particular cancers. This, however, relies on thorough characterisation of exosomes in both healthy and diseased states

An important factor to understanding the roles of exosomes is knowledge of their biodistribution. Currently, the number of publications describing the biodistribution of exosomes is limited. The main reason being the lack of a robust fluorescent label that can be visualised in vivo. Mapping the specific cell type derived exosomes can increase our knowledge on the roles of exosomes in the organism, as well as help to identify natural targeting systems.

Isolation, Characterisation and Fluorescent Labelling

The most common isolation protocol uses a differential centrifugation to fractionate cells, microvesicles, and exosomes, which are pelleted by ultracentrifugation. After vesicles are secreted from cells into the extracellular environment, it difficult to separate the different subpopulations of vesicles to obtain a pure sample. We have developed methods to optimise isolation and thorough characterisation procedures to obtain pure and well-characterised exosomes. Furthermore, we have developed a simple method for labelling of exosomes with a robust fluorescent label that can be visualised in vivo, allowing investigation of the biodistribution of different cell derived exosomes.

Collaborators:

Department of Clinical Medicine, Aarhus University Hospital, Denmark

Dan Peer, Department of Cell Research & Immunology, Tel Aviv University, Israel

Moein Moghimi, school of Medicine, Pharmacy and Health, Durham University, UK

Recent Publications

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Hansen, CS 2015, Opkomsten af det børnehavepædagogiske vidensfelt i Danmark: Frobel som det modern gennembruds pædagogik, 1870-1905. in S Bayer & JE Kristensen (eds), Kald og kundskab: brydninger i børnehavepædagogikken 1870-2015. U Press, København, pp. 31-78.
Madsen, L 2015, Opløsning af selskaber og foreninger mv. og overgang i skattepligt. in A Michelsen, S Askholt, J Bolander, J Engsig, IL Jeppesen, AN Laursen & L Madsen (eds), Lærebog om indkomstskat. 16 edn, Djøf Forlag, Kbh., pp. 997-1012.
Skiveren, T 2015, 'Ø-pokalypsen truer', Jyllands-Posten, pp. 26.
Schuwer, R, Gil-Jaurena, I, Hakan Aydin, C, Costello, E, Dalsgaard, C, Brown, M, Jansen, D & Teixeira, A 2015, 'Opportunities and threats of the MOOC movement for higher education: the European perspective', International Review of Research in Open and Distributed Learning, vol. 16, no. 6, pp. 20-38. https://doi.org/10.19173/irrodl.v16i6.2153
Wendel-Hansen, J 2015, 'Oprør mod københavneriet', Weekendavisen, pp. 12-13.
Rohde, C 2015, Opsigelse. in M Birk, C Rohde & MK Stolt (eds), Lejeloven: med kommentarer. Djøf Forlag, Kbh., pp. 777-825.
Thorup, O & Laursen, K 2015, 'Optællinger af ynglefugle i Vadehavet 2015', 10 p., Notat fra DCE - Nationalt Center for Miljø og Energi (2011-2019).
Hempel, S, Amon, B, Ammon, C, Hoffmann, G, Berg, W, Menz, C, Zhang, G, Halachmi, I, del Prado, A, Estelles, F, Brunsch, R & Amon, T 2015, OptiBarn – Optimized animal specific barn climatisation facing temperature rise and increased climate variability. in I Körner (ed.), RAMIRAN 2015 : 16th International Conference Rural-Urban Symbiosis . TuTech Verlag , Hamburg, pp. 415-420, 16th International Conference Rural-Urban Symbiosis , Hamburg, Germany, 08/09/2015. https://doi.org/10.15480/882.1297
Jain, A, Voulis, N, E. Jung, E, F. R. Doud, D, B. Miller, W, Angenent, L & Erickson, D 2015, 'Optimal intensity and biomass density for biofuel production in a thin light-path photobioreactor', Environmental Science & Technology, vol. 49, no. 10, pp. 6327–6334. https://doi.org/10.1021/es5052777
Du, B, Larsen, C & Scheller-Wolf, A 2015, Optimal inventory decisions in a capacitated online retailing system with customer priorities. in Service Systems and Service Management, ICSSSM 2015. 12th International Conference ., 7170335, IEEE, pp. 1-6, 12th International Conference on Service Systems and Service Management, ICSSSM 2015, Guangzhou, China, 22/06/2015. https://doi.org/10.1109/ICSSSM.2015.7170335
Durkota, K, Lisý, W, Kiekintveld, C & Bosansky, B 2015, Optimal Network Security Hardening Using Attack Graph Games. in N Criado, M Rehak, JM Such & L Vercouter (eds), 2nd International Workshop on Agents and Cybersecurity, ACySE 2015: Workshop Notes at AAMAS 2015. Lancaster University, pp. 7-14, International Workshop on Agents and Cybersecurity , Istanbul, Turkey, 05/05/2015. <http://www.lancaster.ac.uk/staff/suchj/acyse2015-proceedings/ACySE2015_proceedings.pdf#page=14>
Robinius, M, Rodriguez, RA, Kumar, B, Bruun Andresen, G, ter Stein, F, Schiebahn, S & Stolten, D 2015, 'Optimal placement of electrolysers in a German power-to-gas infrastructure', Paper presented at World Hydrogen Energy Conference, Gwangju, Korea, Republic of, 15/06/2014 - 20/06/2014.
Ahmadieh Khanesar, M, Kayacan, E & Kaynak, O 2015, Optimal Sliding Mode Type-2 TSK Fuzzy Control of a 2-DOF Helicopter. in Fuzzy Systems (FUZZ-IEEE), 2015 IEEE International Conference on. IEEE, pp. 1-6, 2015 IEEE International Conference on Fuzzy Systems , Istanbul, Turkey, 02/08/2015. https://doi.org/10.1109/FUZZ-IEEE.2015.7337799
Ottosen, C-O 2015, Optimal styring af fugt kan reducere energiforbruget i væksthusgartnerier. in N Halberg (ed.), Perspektiv - Årsberetning 2014 - DCA – Nationalt Center for Fødevarer og Jordbrug. pp. 12-13.
Jakob, T, Blank, S & Spillner, E 2015, Optimierte Diagnostik der Insektengiftallergie durch rekombinante Allergene. in J Kleine-Tebbe & T Jakob (eds), Molekulare Allergiediagnostik. Springer, pp. 257-275. https://doi.org/10.1007/978-3-662-45221-9_16
Grønbeck, MS, Andersen, BV, Mielby, LH & Byrne, DV 2015, 'Optimisation of Projective Mapping by the use of a panel generated attribute list', Pangborn 2015: "11th Pangborn Sensory Science Symposium", Gothenburg, Sweden, 23/08/2015 - 27/08/2015.
Grønbeck, MS, Andersen, BV, Mielby, LA & Byrne, DV 2015, 'Optimisation of Projective Mapping by the use of a panel generated attribute list', Pangborn 2015: "11th Pangborn Sensory Science Symposium", Gothenburg, Sweden, 23/08/2015 - 27/08/2015.
Nisbeth Jensen, M 2015, Optimising Comprehensibility in Interlingual Translation: The Need for Intralingual Translation. in K Maksymski, S Gutermuth & S Hansen-Schirra (eds), Translation and Comprehensibility. Frank & Timme, Berlin, TransÜD. Arbeiten zur Theorie und Praxis des Übersetzens und Dolmetschens , vol. 72, pp. 163-194.
Köpke, U, Athmann, M, Han, E & Kautz, T 2015, 'Optimising cropping techniques for nutrient and environmental management in organic agriculture', Sustainable Agriculture Research, vol. 4, no. 3.
Tarp, S 2015, 'Optimismo ciego o ceguera optimista', Estudios de Lexicografía, no. 1, pp. 148-149.
Holm, C 2015, 'Optimistic expectations', ASEMagazine, no. 7, pp. 4-7.
Vigna, E & Skibsted, J 2015, Optimization of alkali activated Portland cement – calcined clay blends based on the phase assemblage in the Na2O-CaO-Al2O3-SiO2-H2O system. in K Scrivener & A Favier (eds), Calcined Clays for Sustainable Concrete: Proceedings of the 1st International Conference on Calcined Clays for Sustainable Concrete. Springer, RILEM Bookseries, vol. 10, pp. 101-107, 1st International Conference on Calcined Clay for Sustainable Concrete, Zürich, Switzerland, 23/06/2015. https://doi.org/10.1007/978-94-017-9939-3_13
Pauwels, R, Seynaeve, L, Henriques, JCG, de Oliveira-Santos, C, Souza, PC, Westphalen, FH, Rubira-Bullen, IRF, Ribeiro-Rotta, RF, Rockenbach, MIB, Haiter-Neto, F, Pittayapat, P, Bosmans, H, Bogaerts, R & Jacobs, R 2015, 'Optimization of dental CBCT exposures through mAs reduction', Dentomaxillofacial Radiology, vol. 44, no. 9, 20150108. https://doi.org/10.1259/dmfr.20150108
Weng, PBS & Johansen, P 2015, 'Optimization of Mechanical Heart Valve Cavitation Detection', BMES 2015 Annual Meeting, Tampa, Florida, United States, 07/10/2015 - 10/10/2015. <http://submissions.mirasmart.com/BMESArchive/Browse.aspx?colID=8>