Dr Lotten Ragnarsson

Senior Research Officer

Institute for Molecular Bioscience
+61 7 334 62722



  • Doctor of Philosophy, The University of Queensland
  • Master of Science, University of Kalmar


  • Xie, Jing, Robinson, Samuel D., Gilding, Edward K., Jami, Sina, Deuis, Jennifer R., Rehm, Fabian B.H., Yap, Kuok, Ragnarsson, Lotten, Chan, Lai Yue, Hamilton, Brett R., Harvey, Peta J., Craik, David J., Vetter, Irina and Durek, Thomas (2022). Neurotoxic and cytotoxic peptides underlie the painful stings of the tree nettle Urtica ferox. Journal of Biological Chemistry, 298 (8) 102218, 1-12. doi: 10.1016/j.jbc.2022.102218

  • Wang, Dan, Neupane, Pratik, Ragnarsson, Lotten, Capon, Robert and Lewis, Richard (2022). Diindolylmethane derivatives: new selective blockers for T-type calcium channels. Membranes, 12 (8) 749, 1-13. doi: 10.3390/membranes12080749

  • Moral‐Sanz, Javier, Fernandez‐Rojo, Manuel A., Colmenarejo, Gonzalo, Kurdyukov, Sergey, Brust, Andreas, Ragnarsson, Lotten, Andersson, Åsa, Vila, Sabela F., Cabezas‐Sainz, Pablo, Wilhelm, Patrick, Vela‐Sebastian, Ana, Fernández‐Carrasco, Isabel, Chin, Yanni K. Y., López‐ Mancheño, Yaiza, Smallwood, Taylor B., Clark, Richard J., Fry, Bryan G., King, Glenn F., Ramm, Grant A., Alewood, Paul F., Lewis, Richard J., Mulvenna, Jason P., Boyle, Glen M., Sanchez, Laura E., Neely, G. Gregory, Miles, John J. and Ikonomopoulou, Maria P. (2022). The structural conformation of the tachykinin domain drives the anti‐tumoral activity of an octopus peptide in melanoma BRAF V600E. British Journal of Pharmacology, 179 (20), 4878-4896. doi: 10.1111/bph.15923

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Book Chapter

  • Fry, B. G., Undheim, E. A. B., Jackson, T. N. W., Georgieva, D., Vetter, I., Calvete, J. J., Schieb, H., Cribb, B. W., Yang, D. C., Daly, N. L., Manchadi, M. L. Roy, Gutierrez, J. M., Roelants, K., Lomonte, B., Nicholson, G. M., Dziemborowicz, S., Lavergne, V., Ragnarsson, L., Rash, L. D., Mobli, M., Hodgson, W. C., Casewell, N. R., Nouwens, A., Wagstaff, S. C., Ali, S. A., Whitehead, D. L., Herzig, V., Monagle, P., Kurniawan, N. D. ... Sunagar, K. (2015). Research methods. Venomous reptiles and their toxins: evolution, pathophysiology and biodiscovery. (pp. 153-214) New York, NY, United States: Oxford University Press.

  • Ragnarsson, Lotten, Dodd, Peter R. and Hynd, Matthew R. (2014). Role of ionotropic glutamate receptors in neurodegenerative and other disorders. Handbook of neurotoxicity. (pp. 1039-1070) New York, NY, United States: Springer Science+Business Media. doi: 10.1007/978-1-4614-5836-4_144

Journal Article

Conference Publication

  • Hasan, Mahadhi, Abraham, Nikita, Cardoso, Fernanda C., Ragnarsson, Lotten, Starobova, Hana, Mueller, Alexander, Vetter, Irina and Lewis, Richard J. (2021). Subcutaneous analgesic actions and mode of action of binding of ω-conotoxins at Cav2.2. Venom to Drugs, Daydream Island, QLD Australia, 15 - 19 March 2021.

  • Dutt, Mriga, Giacomotto, Jean, Ragnarsson, Lotten, Andersson, Asa, Brust, Andreas, Deakan, Zoltan, Alewood, Paul F. and Lewis, Richard J. (2020). Re-evaluating the nirvana cabal deployed by piscivorous cone snails. 20th World Congress of the International Society on Toxinology, Buenos Aires, Argentina, 8-13 September 2019. Oxford, United Kingdom: Elsevier. doi: 10.1016/j.toxicon.2019.10.044

  • Fernandez-Rojo, Manuel A., Brust, Andreas, Potriquet, Jeremy, Daley, Joshua, Ragnarsson, Lotten, Andersson, Asa, Mukhopadhyay, Pamela, Wilhelm, Patrick, Chin, Yanni, Smallwood, Taylor, Clark, Richard, King, Glenn, Ramm, Grant, Waddell, Nic, Lewis, Richard, Boyle, Glen, Fry, Bryan, Alewood, Paul, Mulvenna, Jason, Miles, John and Ikonomopoulou, Maria P. (2020). The antiproliferative profile of a linear octopus-derived peptide in melanoma of BRAF-mutation. 20th World Congress of the International Society on Toxinology, Buenos Aires, Argentina, 8-13 September 2019. Oxford, United Kingdom: Elsevier. doi: 10.1016/j.toxicon.2019.10.014

  • Hassan, Mahadhi, Abraham, Nikita, Ragnarsson, Lotten K.N., Cardoso, Fernanda C. and Lewis, Richard J. (2017). Defining ω-conotoxin binding site and delineating the role of the α2δ1 subunit in ω-conotoxin binding. Venom to Drugs Conference 2017, Noosa Heads, QLD Australia, 9-14 October 2017.

  • Wang, D., Herzig, V., Dekan, Z., Ragnarsson, Lotten K. N., Cardoso, Fernanda C. and Lewis, Richard J. (2017). High-throughput cell-based assays for screening Cav3.2 modulators from venoms. Venom to Drugs Conference 2017, Noosa Heads, QLD, Australia, 9-14 October 2017.

  • Muttenthaler, Markus, Andersson, Asa, Ragnarsson, Lotten, Vetter, Irina, Busnelli, Marta, Chini, Bice, Arrowsmith, Sarah, Wray, Susan, de Araujo, Aline Dantas, Dutertre, Sebastien, Mobli, Mehdi, Lewis, Richard J., Gruber, Christian W. and Alewood, Paul F. (2016). Miklos Bodanszky Award Lecture Probing the Functional Complexity of Ancient Oxytocin in Health and Disease. 34th European Peptide Symposium, Leipzig, Germany, 4‐9 September 2016. Hoboken, NJ United States: Wiley.

  • Sousa, Silmara R., Ragnarsson, Lotten, Vetter, Irina, Herzig, Volker, King, Glenn F. and Lewis, Richard J. (2012). Development of high throughput calcium channel assays to accelerate the discovery of novel toxins targeting human cav2.2 channels. 7th World Congress of the International Society on Toxinology & Venom Week 2012, 4th International Scientific Symposium on All Things Venomous, Honolulu, Hawaii, 8 - 13 July 2012. Oxford, United Kingdom: Pergamon. doi: 10.1016/j.toxicon.2012.04.033

  • Ragnarsson, Lotten, Wang, Ching-I. Anderson, Andersson, Åsa, Fajarningsih, Dewi, Monks, Thea, Brust, Andreas, Rosengren, K. Johan and Lewis, Richard J. (2012). The allosteric binding site for rho-TIA on the extracellular surface of the alpha 1B-Adrenoceptor. 17th World Congress of the International-Society-on-Toxinology (IST)/Venom Week/4th International Scientific Symposium on All Things Venomous, Honolulu, Hawaii, United States, 8-13 July 2012. Kidlington, Oxford, United Kingdom: Pergamon. doi: 10.1016/j.toxicon.2012.04.137

  • Meunier, FA, Ragnarsson, L, Proctor, D, Feng, ZP, Molgo, J, Zamponi, GW and Schiavo, G (2005). Glycerotoxin and the regulation of neurotransmitter release. 20th Biennial Meeting of the International-Society-for-Neurochemistry/European-Society-for-Neurochemistry, Innsbruck Austria, Aug 21-26, 2005. OXFORD: BLACKWELL PUBLISHING.

  • Ragnarsson, L, Yasuda, T, Adams, DJ, Lewis, RJ and Dodd, PR (2004). NMDA receptor variant responses to conantokins. 6th Biennial Meeting of the Asian-Pacific-Society-for-Neurochemistry, Hong Kong Peoples R China, Feb 04-07, 2004.

  • Ragnarsson, L. K., Yasuda, T., Adams, D. J., Lewis, R. J. and Dodd, P. R. (2004). NMDA receptor variant responses to conantokins. 6th Biennial Meeting of Asian-Pacific Society for Neurochemistry, Hong Kong, 4th - 7th February, 2004. Oxford, UK: Blackwell. doi: 10.1046/j.1474-1644.2003.2314p26_01.x

  • Ragnarsson, L, Dodd, P and Lewis, R (2002). Regional variation in the, pharmacology of NMDA receptors in normal and Alzheimer disease human cortex: Interactions with polyamines and conantokins. NEW YORK: ELSEVIER SCIENCE INC.

  • Dodd, P. R., Ragnarsson, L., Eckert, A. L., Alewood, P. F. and Lewis, R. (1999). Effect of conantokins on the spermine modulation of glutamate-NMDA sites in normal and Alzheimer disease human cerebral cortex. Joint meeting of the International Society for Neurochemistry (ISN) and the European Society for Chemistry (ESN), Berlin, Germany, 8 - 14 August, 1999. Hagerstown: Lipponcott-Raven.

  • Ragnarsson, L., Eckert, A. L., Dodd, P. R. and Lewis, R. J. (1999). Spermine modulation of the glutamate NMDA site is differentially responsive to conantokins in normal and ALzheimer disease human cerebral cortex. 19th Annual Meeting of the Australian Neuroscience Society, Hobart Convention Centre, Hobart, 31st January - 3rd February, 1999. Melbourne: Australian Neuroscience Society.

  • Totterman, TH, Gidlof, C, Ragnarsson, L, Hogbom, E, Lindeberg, M, von der Lehr, N, Einarsson, A, Soegaard, M, Kristensson, K, Kalland, T and Dohlsten, M (1998). Targeted superantigens for immunotherapy of haematopoietic tumours. 25th Congress of the International-Society-of-Blood-Transfusion, Oslo Norway, Jun 27-Jul 02, 1998. BASEL: KARGER.

PhD and MPhil Supervision

Completed Supervision