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Kutuzov N, Gulin A, Lyaskovskiy V, Nadtochenko V, Maksimov G. ATP-Mediated Compositional Change in Peripheral Myelin Membranes: A Comparative Raman Spectroscopy and Time-Of-Flight Secondary Ion Mass Spectrometry Study. PLoS One 2015; 10:e0142084. [PMID: 26544552 PMCID: PMC4636249 DOI: 10.1371/journal.pone.0142084] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 10/16/2015] [Indexed: 12/20/2022] Open
Abstract
In the present paper we addressed a mechanism of the myelin reorganization initiated by extracellular ATP and adenosine in sciatic nerves of the frog Rana temporaria. In combination with Raman microspectroscopy, allowing noninvasive live-cell measurements, we employed time-of-flight secondary ion mass spectrometry (TOF-SIMS) to follow the underlying changes in chemical composition of myelin membranes triggered by the purinergic agents. The simultaneous increase in lipid ordering degree, decrease in membrane fluidity and the degree of fatty acid unsaturation were induced by both ATP and adenosine. Mass spectrometry measurements revealed that ATP administration also led to the marked elevation of membrane cholesterol and decrease of phosphotidylcholine amounts. Vesicular lipid transport pathways are considered as possible mechanisms of compositional and structural changes of myelin.
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Affiliation(s)
- Nikolay Kutuzov
- Biophysics Department, Biological Faculty, Moscow State University, Leninskie gory 1/12, Moscow, Russian Federation, 119991
- * E-mail:
| | - Alexander Gulin
- N.N. Semenov Institute of Chemical Physics, RAS, Kosigin str. 4, Moscow, Russian Federation, 119991
- Chemistry Faculty, Moscow State University, Leninskie Gory 1–3, Moscow, Russian Federation, 119991
| | - Vladimir Lyaskovskiy
- All-Russian Research Institute for Optical and Physical Measurements, Ozernaya 46, Moscow, Russian Federation, 119361
| | - Victor Nadtochenko
- N.N. Semenov Institute of Chemical Physics, RAS, Kosigin str. 4, Moscow, Russian Federation, 119991
- Chemistry Faculty, Moscow State University, Leninskie Gory 1–3, Moscow, Russian Federation, 119991
- Moscow Institute of Physics and Technology State University, Institutskiy per. 9, Dolgoprudny, Moscow Region, Russian Federation, 141700
- Institute of Problems of Chemical Physics RAS, Academician Semenov avenue 1, Chernogolovka, Moscow region, Russian Federation, 142432
| | - Georgy Maksimov
- Biophysics Department, Biological Faculty, Moscow State University, Leninskie gory 1/12, Moscow, Russian Federation, 119991
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