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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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Uggerhøj, LE, Poulsen, TJ, Munk, JK, Fredborg, M, Søndergaard, TE, Frimodt-Møller, N, Hansen, PR & Wimmer, R 2015, 'Rational Design of Alpha-Helical Antimicrobial Peptides: Do's and Don'ts', ChemBioChem, vol. 16, no. 2, pp. 242-253. https://doi.org/10.1002/cbic.201402581
Ferapontova, E 2015, 'Rational design of genosensors and aptasensors for cancer diagnosis', SYLICA Workshop on electrochemical analysis of biomolecules and its applications in diagnostics, Brno, Czech Republic, 19/02/2015 - 20/02/2015.
Pontone, G, Patel, MR, Hlatky, MA, Chiswell, K, Andreini, D, Norgaard, BL, Byrne, RA, Curzen, N, Purcell, I, Gutberlet, M, Rioufol, G, Hink, U, Schuchlenz, HW, Feuchtner, G, Gilard, M, de Bruyne, B, Rogers, C & Douglas, PS 2015, 'Rationale and design of the Prospective LongitudinAl Trial of FFRCT: Outcome and Resource IMpacts study', American Heart Journal, vol. 170, no. 3, pp. 438-446.e44. https://doi.org/10.1016/j.ahj.2015.06.002
Bentley-Lewis, R, Aguilar, D, Riddle, MC, Claggett, B, Diaz, R, Dickstein, K, Gerstein, HC, Johnston, P, Køber, LV, Lawson, F, Lewis, EF, Maggioni, AP, McMurray, JJV, Ping, L, Probstfield, JL, Solomon, SD, Tardif, J-C, Wu, Y, Pfeffer, MA, ELIXA Investigators & Rungby, J 2015, 'Rationale, design, and baseline characteristics in Evaluation of LIXisenatide in Acute Coronary Syndrome, a long-term cardiovascular end point trial of lixisenatide versus placebo', American Heart Journal, vol. 169, no. 5, pp. 631-638.e7. https://doi.org/10.1016/j.ahj.2015.02.002
Ferapontova, E 2015, 'Rationalizing design of genosensors exploiting electric properties of DNA', Next Generation Tools for DNA Diagnostics, Edinburgh, United Kingdom, 26/02/2015 - 26/02/2015.
Knight, C & Albertsen, A 2015, 'Rawlsian Justice and Palliative Care', Bioethics, vol. 29, no. 8, pp. 536–542. https://doi.org/10.1111/bioe.12156
Elm, J, Norman, P & Mikkelsen, KV 2015, 'Rayleigh light scattering properties of atmospheric molecular clusters consisting of sulfuric acid and bases', Physical Chemistry Chemical Physics, vol. 17, no. 24, pp. 15701-15709. https://doi.org/10.1039/c5cp01012h
Jan, S, Schwering, A, Schultz, CPL & Chipofya, M 2015, RCC11: A Finer Topological Representation for the Alignment of Regions in Sketch Maps. in 28th International Workshop on Qualitative Reasoning. 28th International Workshop on Qualitative Reasoning, Minneapolis, Minnesota, United States, 10/08/2015. <https://www.researchgate.net/publication/278685943_RCC11_A_Finer_Topological_Representation_for_the_Alignment_of_Regions_in_Sketch_Maps>
Grigoras, I, Toor, SS & Rosendahl, LA 2015, 'Reaction mechanisms and kinetics of processing glucose, xylose and glucose-xylose mixtures under hot compressed water conditions for predicting bio-crude composition', 4th International Conference on Thermochemical Conversion Science (TcBiomass 2015), Chicago, IL, United States, 02/11/2015 - 05/11/2015.
Bennett, JM, Marks, NA, Miwa, JA, Lopinski, GP, Rosei, F, McKenzie, DR & Warschkow, O 2015, 'Reaction pathways for pyridine adsorption on silicon (001)', Journal of Physics: Condensed Matter, vol. 27, no. 5, 054001. https://doi.org/10.1088/0953-8984/27/5/054001
Gomez, CRSQ & Skibsted, J 2015, Reactivity of heated kaolinite from a combination of chemical methods and solid-state NMR spectroscopy. in ICCC 2015 Beijing : the 14th international congress on the chemistry of cement, 13-16 October, 2015. pp. 310, 14th International Congress on the Chemistry of Cement, Beijing, China, 13/10/2015.
Gomez, CRSQ & Skibsted, J 2015, Reactivity of heated kaolinite from a combination of solid-state NMR and chemical methods. 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. 125-132, 1st International Conference on Calcined Clay for Sustainable Concrete, Zürich, Switzerland, 23/06/2015. https://doi.org/10.1007/978-94-017-9939-3_16
Albrechtslund, A & Albrechtslund, A-MB 2015, 'Reading, Tracking and Intimacy: The dynamics and implications of a digitized culture', Paper presented at Profile, Predict and Prevent, Paris, France, 30/10/2015 - 31/10/2015.
Wahlgren, B & Nistrup, U 2015, 'Realkompetence: hvordan kan kortuddannede få deres praktiske kompetencer anerkendt i en erhvervsuddannelse?', Dansk Pædagogisk Tidsskrift, vol. 63, no. 1, pp. 89-97.
Gulløv, E 2015, Real siblings. in I Winther, C Palludan & MM Rehder (eds), Sibling: practical and sensitive relations . Danish School of Education, Aarhus University, Copenhagen, pp. 23-36. <http://ebooks.au.dk/index.php/aul/catalog/book/114>
Whiting, C, Shtyrov, Y & Marslen-Wilson, W 2015, 'Real-time functional architecture of visual word recognition', Journal of Cognitive Neuroscience (Online), vol. 27, no. 2, pp. 246-65. https://doi.org/10.1162/jocn_a_00699
Zuccaro, L, Tesauro, C, Kurkina, T, Fiorani, P, Ki Yu, H, Knudsen, BR, Kern, K, Desideri, A & Balasubramanian, K 2015, 'Real-Time Label-Free Direct Electronic Monitoring of Topoisomerase Enzyme Binding Kinetics on Graphene', ACS Nano, vol. 9, no. 11, pp. 11166-11176. https://doi.org/10.1021/acsnano.5b05709
Hokland, P & Cotter, F 2015, 'Real world data on acute myeloid leukaemia therapy from the developing world - an eye-opener', British Journal of Haematology, vol. 10.1111, no. 13410, 25855402. https://doi.org/10.1111/bjh.13410
Thomsen, JPF & Birkmose, AE 2015, 'Re-assessing Self-Interest Theory: Can Intergroup Contact Constrain Self-Interested Reactions?', International Journal of Comparative Sociology, vol. 56, no. 2, pp. 98-115. https://doi.org/10.1177/0020715215598351
Arboe, T 2015, Receding idioms in West Danish (Jutlandic). in E Piirainen & A Sherris (eds), Language Endangerment: Disappearing metaphors and shifting conceptualizations. John Benjamins Publishing Company, Amsterdam / Philadelphia, Cognitive Linguistic Studies in Cultural Contexts, vol. 7, pp. 155-174. https://doi.org/10.1075/clscc.7.07arb
Zhang, N-Z, Wang, M, Xu, Y, Petersen, E & Zhu, X-Q 2015, 'Recent advances in developing vaccines against Toxoplasma gondii: an update', Expert Review of Vaccines, vol. 14, no. 12, pp. 1609-21. https://doi.org/10.1586/14760584.2015.1098539
Abbiati, G, Cazzador, E, Lanese, I, Eftekhar Azam, S, S. Bursi, O & Pavese, A 2015, Recent advances on the hybrid simulation of bridges base on partitioned time integration, dynamic identification and model updating. in 6th International Conference on Advances in Experimental Structural Engineering 11th International Workshop on Advanced Smart Materials and Smart Structures Technology . 6th International Conference on Advances in Experimental Structural Engineering 11th International Workshop on Advanced Smart Materials and Smart Structures Technology , Urbana-Champaign , Illinois, United States, 01/08/2015.
Mirzaei, PA 2015, 'Recent challenges in modeling of urban heat island', Sustainable Cities and Society, vol. 19, 266, pp. 200-206. https://doi.org/10.1016/j.scs.2015.04.001
Fox, AD, Christensen, TK, Dalby, L & Nagy, S 2015, 'Recent changes in wintering Eurasian Wigeon numbers in northwest Europe', Pan-European Duck Symposium, Hanko, Finland, 07/04/2015 - 11/04/2015.
Fox, AD 2015, 'Recent shifts in wintering distributions of common dabbling and diving duck species in northwest Europe', Living on a flyway:habitat processes and bird population dynamics from breeding to wintering grounds, Helsinki, Finland, 12/03/2015 - 12/03/2015.
Trip, AK, Stiekema, J, Visser, O, Dikken, JL, Cats, A, Boot, H, van Sandick, JW, Jansen, EPM & Verheij, M 2015, 'Recent trends and predictors of multimodality treatment for oesophageal, oesophagogastric junction, and gastric cancer: A Dutch cohort-study', Acta oncologica (Stockholm, Sweden), vol. 54, no. 10, pp. 1754-62. https://doi.org/10.3109/0284186X.2015.1009638
Læssøe, J & Mochizuki, Y 2015, 'Recent trends in national policy on education for sustainable development and climate change education', Journal of Education for Sustainable Development, vol. 9, no. 1, pp. 27-43. https://doi.org/10.1177/0973408215569112
Bjønness, J & Krøll, LT 2015, 'Receptpligtig medicin bruges også uden recept', STOF - Viden om rusmidler og samfund, no. 25, pp. 89.
Povlsen, KK 2015, 'Recipes for Old Age: Women's magazines and blogs 1920-2015', Paper presented at Food and the life-span in Europe 1800-2000, København, Denmark, 28/09/2015 - 30/09/2015.
Lysgaard, JG & Sund, P 2015, 'Reclaim “Education” in environmental and sustainability education research', Paper presented at World Environmental Education Conference, Gothenbrug, Sweden, 29/06/2015 - 02/07/2015.