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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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Maslim, R, Chaoyi, H, Yixi, Z, Linhao, J, Bahadir Kocer, B & Kayacan, E 2015, Performance evaluation of adaptive and nonadaptive fuzzy structures for 4D trajectory tracking of quadrotors: A comparative study. in Fuzzy Systems (FUZZ-IEEE), 2015 IEEE International Conference on. IEEE, pp. 1-7, 2015 IEEE International Conference on Fuzzy Systems , Istanbul, Turkey, 02/08/2015. https://doi.org/10.1109/FUZZ-IEEE.2015.7337945
Vestergaard, M, Mikkelsen, A, Bjerring, M, Spleth, P & Kargo, M 2015, Performance of cressbred Holstein bulls and heifer calves slaughtered at 12-month of age. in Book of Abstract of the 66th Annual Meeting of the European Federation of Animal Science. vol. 21, The Netherlands, EAAP Book of Abstracts, pp. 241-241, 66th Annual Meeting of the European Federation of Animal Science, Warsaw, Poland, 31/08/2015. https://doi.org/10.3920/978-90-8686-816-2
Guzman, JJ, O. Pehlivaner Kara, M, Frey, MM & Angenent, L 2015, 'Performance of polyacrylonitrile (PAN)-based electrospun materials coated in PEDOT conductive polymer as electrodes for bioelectrochemical systems', ISMET-2015 , Phoenix, United States, 01/10/2015 - 04/10/2015.
Rubæk, GH 2015, Performance of selected soil P tests in proficiency test programmes. in Validity and analytical robustness of the Olsen soil P test and other agronomic soil P tests used in the northern Europe. DCA - Nationalt Center for Fødevarer og Jordbrug, DCA rapport, no. 071.
Nielsen, TR & Vedel, KA 2015, 'Performanceuddannelse i Danmark? Muligheder og Udfordringer', Peripeti - tidsskrift for dramaturgiske studier, no. 23, pp. 121-126.
Jorge, ÉG, Tanomaru-Filho, M, Guerreiro-Tanomaru, JM, Reis, JMDSN, Spin-Neto, R & Gonçalves, M 2015, 'Periapical repair following endodontic surgery: two- and three-dimensional imaging evaluation methods', Brazilian Dental Journal, vol. 26, no. 1, pp. 69-74. https://doi.org/10.1590/0103-6440201300252
Pessoa, R, Sousa, R, Pereira, L, Neves, F, Bezerra, F, Jaecques, S, Sloten, JV, Quirynen, M, Teughels, W & Spin-Neto, R 2015, 'Periimplant bone remodeling around external hexagon and Morse-taper implant connections –prospective randomized controlled split-mouth clinical trial', Clinical Oral Implants Research, vol. 26, no. Supplement S12, pp. 376-376. <http://onlinelibrary.wiley.com/doi/10.1111/clr.367_12679/full>
Schou, S, Koldsland, OC, Saaby, M, Berglundh, T & Isidor, F 2015, Periimplantitis. Et stort klinisk problem? in P Holmstrup (ed.), Aktuel Nordisk Odontologi 2015. 40. årgang edn, Munksgaard , pp. 171-184.
Ozgur, K, Berkkanoglu, M, Bulut, H, Humaidan, P & Coetzee, K 2015, 'Perinatal outcomes after fresh versus vitrified-warmed blastocyst transfer: retrospective analysis', Fertility and Sterility, vol. 104, no. 4, pp. 899-907. https://doi.org/10.1016/j.fertnstert.2015.06.031
López, R & Baelum, V 2015, 'Periodontal disease classifications revisited', European Journal of Oral Sciences, vol. 123, pp. 385-389. https://doi.org/10.1111/eos.12227
Klintebjerg, K, Petersen, E, Pshenichnaya, NY, Ermakova, LA, Nagorny, SA & Larsen, CS 2015, 'Periorbital Dirofilaria repens imported to Denmark: A human case report', IDCases, vol. 2, no. 1, pp. 25-6. https://doi.org/10.1016/j.idcr.2014.12.001
Camargo, LL, Denadai-Souza, A, Yshii, LM, Mesquita, FPN, Soares, AG, Lima, C, Schenka, A, Grant, A, Fernandes, E, Muscará, MN & Costa, SKP 2015, 'Peripheral Neurokinin-1 Receptors Contribute to Kaolin-Induced Acute Monoarthritis in Rats', NeuroImmunoModulation, vol. 22, no. 6, pp. 373-384. https://doi.org/10.1159/000381549
d'Amore, F, Gaulard, P, Trümper, L, Corradini, P, Kim, W-S, Specht, L, Bjerregaard Pedersen, M, Ladetto, M & ESMO Guidelines Committee 2015, 'Peripheral T-cell Lymphomas: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up', Annals of Oncology, vol. 26 Suppl 5, pp. v108-15. https://doi.org/10.1093/annonc/mdv201
Verwaal, V 2015, Peritoneal metastase and peritoneal mesothelioma. in Cancer principles & Practise of Oncology. 10 edn, Wolters Kluwer Health, pp. 1761.
Sonne, O 2015, 'Per Jørgensen: Kiropraktikkens historie i Danmark. Syddansk Universitetsforlag, 2014.', Dansk Medicinhistorisk Årbog, vol. 43, pp. 195-197.
Larsen, AH 2015, Per Kirkeby: Malerier 1978-1989. vol. Bd. 2, 1. udgave edn, Systime, Aarhus.
Hollesen, J, Matthiesen, H, Møller, AB & Elberling, B 2015, 'Permafrost thawing in organic Arctic soils accelerated by ground heat production', Nature Climate Change, vol. 5, no. 6, pp. 574-578. https://doi.org/10.1038/nclimate2590
Croix, S 2015, 'Permanency in Early Medieval Emporia: Reassessing Ribe', European Journal of Archaeology, vol. 18, no. 3, pp. 497-523.
Boix, PP, Agarwala, S, Ming Koh, T, Mathews, N & G. Mhaisalkar, S 2015, 'Perovskite Solar Cells: Beyond Methylammnonium lead iodide', The Journal of Physical Chemistry Letters, vol. 6, no. 5, pp. 898-907. https://doi.org/10.1021/jz502547f
Gorbahn, K 2015, Perpetrators, vicitim, heroes: The Second World War and National Socialism in Danish history magazines. in S Popp, J Schumann & M Hannig (eds), Commercialised History: Popular History Magazines in . Approaches to a Historico-Cultural Phenomenon as a Basis for History Teaching . Peter Lang, pp. 319-334. https://doi.org/10.3726/ 978-3-653-05253-4
Wilkens, R, Wilson, A, Burns, PN, Ghosh, S & Wilson, SR 2015, 'Persistent Enhancement in Contrast Ultrasound Studies of Severe Crohn's Disease: Stuck Bubbles?', Journal of Crohn's and Colitis, vol. 9, P130, pp. S141-S142.
Barré, P, Plante, AF, Cecillon, L, Lutfalla, S, Baudin, F, Bernard, S, Quenea, K, Anquetil, C, Christensen, BT, Houot, S, Kätterer, T, Macdonald, A, van Oort, F & Chenu, C 2015, 'Persistent soil organic carbon is thermally stable low energy organic carbon', 5th International SYMPOSIUM on SOIL ORGANIC MATTER, Göttingen, Germany, 20/09/2015 - 24/09/2015.
Steinle, S, Reis, S, Sabel, CE, Semple, S, Twigg, MM, Braban, CF, Leeson, SR, Heal, MR, Harrison, D, Lin, C & Wu, H 2015, 'Personal exposure monitoring of PM2.5 in indoor and outdoor microenvironments', Science of the Total Environment, vol. 508, pp. 383-394. https://doi.org/10.1016/j.scitotenv.2014.12.003
Ridgway, R 2015, 'Personalisation as Currency', A Peer-Reviewed Journal About, vol. 4, no. 1, pp. 17-28.