Abstract
We have shown previously that the polymorphic structure of the limk1 gene in Drosophila leads to changes in LIMK1 content and to defects in courtship behavior, sound production, and learning/memory. The results of the present study of three wild-type strains and mutant agn ts3 with altered limk1 structure demonstrate that long-term memory is normal in Canton-S and Oregon-R but is impaired in Berlin and drastically suppressed in agn ts3. This temperature-sensitive mutant carries the S-element from the Tc1/mariner family insertion near the dlimk1 3′-UTR and, compared to Canton-S, has a reverse pCREB distribution in adult neuromuscular junctions (NMJ) of the second dorsal imago nerve before and after learning. Moreover, only agn ts3 demonstrates amyloid-like aggregate formation in NMJ. This suggests that this impedes pCREb transport and thereby impairs the formation of short- and long-term memory.
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Original Russian Text © A.N. Kaminskaya, E.A. Nikitina, A.V. Medvedeva, M.S. Gerasimenko, D.A. Chernikova, E.V. Savvateeva-Popova, 2015, published in Genetika, 2015, Vol. 51, No. 6, pp. 685–693.
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Kaminskaya, A.N., Nikitina, E.A., Medvedeva, A.V. et al. The influence of the limk1 gene polymorphism on learning acquisition and memory formation, pCREB distribution and aggregate formation in neuromuscular junctions in Drosophila melanogaster . Russ J Genet 51, 582–590 (2015). https://doi.org/10.1134/S1022795415060071
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DOI: https://doi.org/10.1134/S1022795415060071