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Arkhipov AY, Fedorov NS, Nurullin LF, Khabibrakhmanov AN, Mukhamedyarov MA, Samigullin DV, Malomouzh AI. Activation of TRPV1 Channels Inhibits the Release of Acetylcholine and Improves Muscle Contractility in Mice. Cell Mol Neurobiol 2023; 43:4157-4172. [PMID: 37689594 DOI: 10.1007/s10571-023-01403-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 08/22/2023] [Indexed: 09/11/2023]
Abstract
TRPV1 represents a non-selective transient receptor potential cation channel found not only in sensory neurons, but also in motor nerve endings and in skeletal muscle fibers. However, the role of TRPV1 in the functioning of the neuromuscular junction has not yet been fully established. In this study, the Levator Auris Longus muscle preparations were used to assess the effect of pharmacological activation of TRPV1 channels on neuromuscular transmission. The presence of TRPV1 channels in the nerve terminal and in the muscle fiber was confirmed by immunohistochemistry. It was verified by electrophysiology that the TRPV1 channel agonist capsaicin inhibits the acetylcholine release, and this effect was completely absent after preliminary application of the TRPV1 channel blocker SB 366791. Nerve stimulation revealed an increase of amplitude of isometric tetanic contractions upon application of capsaicin which was also eliminated after preliminary application of SB 366791. Similar data were obtained during direct muscle stimulation. Thus, pharmacological activation of TRPV1 channels affects the functioning of both the pre- and postsynaptic compartment of the neuromuscular junction. A moderate decrease in the amount of acetylcholine released from the motor nerve allows to maintain a reserve pool of the mediator to ensure a longer signal transmission process, and an increase in the force of muscle contraction, in its turn, also implies more effective physiological muscle activity in response to prolonged stimulation. This assumption is supported by the fact that when muscle was indirect stimulated with a fatigue protocol, muscle fatigue was attenuated in the presence of capsaicin.
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Affiliation(s)
- Arsenii Y Arkhipov
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, Federal Research Center, Kazan Scientific Center of Russian Academy of Sciences, 2/31 Lobachevsky Street, Box 261, Kazan, Russia, 420111
| | - Nikita S Fedorov
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, Federal Research Center, Kazan Scientific Center of Russian Academy of Sciences, 2/31 Lobachevsky Street, Box 261, Kazan, Russia, 420111
- Kazan Federal University, 18 Kremlyovskaya Street, Kazan, Russia, 420008
| | - Leniz F Nurullin
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, Federal Research Center, Kazan Scientific Center of Russian Academy of Sciences, 2/31 Lobachevsky Street, Box 261, Kazan, Russia, 420111
- Kazan State Medical University, 49 Butlerova Street, Kazan, Russia, 420012
| | | | | | - Dmitry V Samigullin
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, Federal Research Center, Kazan Scientific Center of Russian Academy of Sciences, 2/31 Lobachevsky Street, Box 261, Kazan, Russia, 420111
- A.N. Tupolev Kazan National Research Technical University, 10, K. Marx Street, Kazan, Russia, 420111
| | - Artem I Malomouzh
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, Federal Research Center, Kazan Scientific Center of Russian Academy of Sciences, 2/31 Lobachevsky Street, Box 261, Kazan, Russia, 420111.
- A.N. Tupolev Kazan National Research Technical University, 10, K. Marx Street, Kazan, Russia, 420111.
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Faizullin BA, Dayanova IR, Kurenkov AV, Gubaidullin AT, Saifina AF, Nizameev IR, Kholin KV, Khrizanforov MN, Sirazieva AR, Litvinov IA, Voloshina AD, Lyubina AP, Sibgatullina GV, Samigullin DV, Musina EI, Strelnik ID, Karasik AA, Mustafina AR. ROS-producing nanomaterial engineered from Cu(I) complexes with P 2N 2-ligands for cancer cells treating. Discov Nano 2023; 18:133. [PMID: 37903946 PMCID: PMC10616039 DOI: 10.1186/s11671-023-03912-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/20/2023] [Indexed: 11/01/2023]
Abstract
The work presents core-shell nanoparticles (NPs) built from the novel Cu(I) complexes with cyclic P2N2-ligands (1,5-diaza-3,7-diphosphacyclooctanes) that can visualize their entry into cancer and normal cells using a luminescent signal and treat cells by self-enhancing generation of reactive oxygen species (ROS). Variation of P- and N-substituents in the series of P2N2-ligands allows structure optimization of the Cu(I) complexes for the formation of the luminescent NPs with high chemical stability. The non-covalent modification of the NPs with triblock copolymer F-127 provides their high colloidal stability, followed by efficient cell internalization of the NPs visualized by their blue (⁓450 nm) luminescence. The cytotoxic effects of the NPs toward the normal and some of cancer cells are significantly lower than those of the corresponding molecular complexes, which correlates with the chemical stability of the NPs in the solutions. The ability of the NPs to self-enhanced and H2O2-induced ROS generation is demonstrated in solutions and intracellular space by means of the standard electron spin resonance (ESR) and fluorescence techniques correspondingly. The anticancer specificity of the NPs toward HuTu 80 cancer cells and the apoptotic cell death pathway correlate with the intracellular level of ROS, which agrees well with the self-enhancing ROS generation of the NPs. The enhanced level of ROS revealed in HuTu 80 cells incubated with the NPs can be associated with the significant level of their mitochondrial localization.
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Affiliation(s)
- Bulat A Faizullin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088.
| | - Irina R Dayanova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
| | - Alexey V Kurenkov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
| | - Aidar T Gubaidullin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
| | - Alina F Saifina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
| | - Irek R Nizameev
- Department of Physics, Kazan National Research Technological University, 68 Karl Marx Str., Kazan, Russia, 420015
| | - Kirill V Kholin
- Department of Nanotechnology in Electronics, Kazan National Research Technical University Named After A.N. Tupolev-KAI, 10 K. Marx Street, Kazan, Russia, 420111
| | - Mikhail N Khrizanforov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
- Aleksander Butlerov Institute of Chemistry, Kazan Federal University, 1/29 Lobachevski Str., Kazan, Russia, 420008
| | - Aisylu R Sirazieva
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
| | - Igor A Litvinov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
| | - Alexandra D Voloshina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
| | - Anna P Lyubina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
| | - Guzel V Sibgatullina
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevski Str., Kazan, Russia, 420111
| | - Dmitry V Samigullin
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevski Str., Kazan, Russia, 420111
- Institute for Radio-Electronics and Telecommunications, Kazan National Research Technical University Named After A.N. Tupolev-KAI, 10 K. Marx Street, Kazan, Russia, 420111
| | - Elvira I Musina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
| | - Igor D Strelnik
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
- Aleksander Butlerov Institute of Chemistry, Kazan Federal University, 1/29 Lobachevski Str., Kazan, Russia, 420008
| | - Andrey A Karasik
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
| | - Asiya R Mustafina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Str., Kazan, Russia, 420088
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Mukhamedyarov MA, Khabibrakhmanov AN, Khuzakhmetova VF, Giniatullin AR, Zakirjanova GF, Zhilyakov NV, Mukhutdinova KA, Samigullin DV, Grigoryev PN, Zakharov AV, Zefirov AL, Petrov AM. Early Alterations in Structural and Functional Properties in the Neuromuscular Junctions of Mutant FUS Mice. Int J Mol Sci 2023; 24:9022. [PMID: 37240370 PMCID: PMC10218837 DOI: 10.3390/ijms24109022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/16/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is manifested as skeletal muscle denervation, loss of motor neurons and finally severe respiratory failure. Mutations of RNA-binding protein FUS are one of the common genetic reasons of ALS accompanied by a 'dying back' type of degeneration. Using fluorescent approaches and microelectrode recordings, the early structural and functional alterations in diaphragm neuromuscular junctions (NMJs) were studied in mutant FUS mice at the pre-onset stage. Lipid peroxidation and decreased staining with a lipid raft marker were found in the mutant mice. Despite the preservation of the end-plate structure, immunolabeling revealed an increase in levels of presynaptic proteins, SNAP-25 and synapsin 1. The latter can restrain Ca2+-dependent synaptic vesicle mobilization. Indeed, neurotransmitter release upon intense nerve stimulation and its recovery after tetanus and compensatory synaptic vesicle endocytosis were markedly depressed in FUS mice. There was a trend to attenuation of axonal [Ca2+]in increase upon nerve stimulation at 20 Hz. However, no changes in neurotransmitter release and the intraterminal Ca2+ transient in response to low frequency stimulation or in quantal content and the synchrony of neurotransmitter release at low levels of external Ca2+ were detected. At a later stage, shrinking and fragmentation of end plates together with a decrease in presynaptic protein expression and disturbance of the neurotransmitter release timing occurred. Overall, suppression of synaptic vesicle exo-endocytosis upon intense activity probably due to alterations in membrane properties, synapsin 1 levels and Ca2+ kinetics could be an early sign of nascent NMJ pathology, which leads to neuromuscular contact disorganization.
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Affiliation(s)
- Marat A. Mukhamedyarov
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
| | - Aydar N. Khabibrakhmanov
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
| | - Venera F. Khuzakhmetova
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
| | - Arthur R. Giniatullin
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
| | - Guzalia F. Zakirjanova
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
| | - Nikita V. Zhilyakov
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
| | - Kamilla A. Mukhutdinova
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
| | - Dmitry V. Samigullin
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
- Department of Radiophotonics and Microwave Technologies, Kazan National Research Technical University, 10 K. Marx St., Kazan 420111, Russia
| | - Pavel N. Grigoryev
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
| | - Andrey V. Zakharov
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
- Laboratory of Neurobiology, Kazan Federal University, Kazan 420008, Russia
| | - Andrey L. Zefirov
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
| | - Alexey M. Petrov
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
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Bukharaeva EA, Skorinkin AI, Samigullin DV, Petrov AM. Presynaptic Acetylcholine Receptors Modulate the Time Course of Action Potential-Evoked Acetylcholine Quanta Secretion at Neuromuscular Junctions. Biomedicines 2022; 10:biomedicines10081771. [PMID: 35892671 PMCID: PMC9332499 DOI: 10.3390/biomedicines10081771] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/17/2022] [Accepted: 07/18/2022] [Indexed: 11/16/2022] Open
Abstract
For effective transmission of excitation in neuromuscular junctions, the postsynaptic response amplitude must exceed a critical level of depolarization to trigger action potential spreading along the muscle-fiber membrane. At the presynaptic level, the end-plate potential amplitude depends not only on the acetylcholine quanta number released from the nerve terminals in response to the nerve impulse but also on a degree of synchronicity of quanta releases. The time course of stimulus-phasic synchronous quanta secretion is modulated by many extra- and intracellular factors. One of the pathways to regulate the neurosecretion kinetics of acetylcholine quanta is an activation of presynaptic autoreceptors. This review discusses the contribution of acetylcholine presynaptic receptors to the control of the kinetics of evoked acetylcholine release from nerve terminals at the neuromuscular junctions. The timing characteristics of neurotransmitter release is nowadays considered an essential factor determining the plasticity and efficacy of synaptic transmission.
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Affiliation(s)
- Ellya A. Bukharaeva
- Kazan Institute of Biochemistry and Biophysics, Kazan Federal Scientific Centre “Kazan Scientific Centre of Russian Academy of Sciences”, 2/31 Lobatchevsky Street, 420111 Kazan, Russia; (A.I.S.); (D.V.S.); (A.M.P.)
- Correspondence:
| | - Andrey I. Skorinkin
- Kazan Institute of Biochemistry and Biophysics, Kazan Federal Scientific Centre “Kazan Scientific Centre of Russian Academy of Sciences”, 2/31 Lobatchevsky Street, 420111 Kazan, Russia; (A.I.S.); (D.V.S.); (A.M.P.)
| | - Dmitry V. Samigullin
- Kazan Institute of Biochemistry and Biophysics, Kazan Federal Scientific Centre “Kazan Scientific Centre of Russian Academy of Sciences”, 2/31 Lobatchevsky Street, 420111 Kazan, Russia; (A.I.S.); (D.V.S.); (A.M.P.)
- Department of Radiophotonics and Microwave Technologies, Kazan National Research Technical University named after A.N. Tupolev, 420111 Kazan, Russia
| | - Alexey M. Petrov
- Kazan Institute of Biochemistry and Biophysics, Kazan Federal Scientific Centre “Kazan Scientific Centre of Russian Academy of Sciences”, 2/31 Lobatchevsky Street, 420111 Kazan, Russia; (A.I.S.); (D.V.S.); (A.M.P.)
- Institute of Neuroscience, Kazan State Medical University, 49 Butlerova Street, 420012 Kazan, Russia
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Zhilyakov NV, Arkhipov AY, Khaziev EF, Mukhamedyarov MA, Samigullin DV. Registration of Calcium Transients in Mouse Neuromuscular Junction with High Temporal Resolution using Confocal Microscopy. J Vis Exp 2021. [PMID: 34927611 DOI: 10.3791/63308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Estimation of the presynaptic calcium level is a key task in studying synaptic transmission since calcium entry into the presynaptic cell triggers a cascade of events leading to neurotransmitter release. Moreover, changes in presynaptic calcium levels mediate the activity of many intracellular proteins and play an important role in synaptic plasticity. Studying calcium signaling is also important for finding ways to treat neurodegenerative diseases. The neuromuscular junction is a suitable model for studying synaptic plasticity, as it has only one type of neurotransmitter. This article describes the method for loading a calcium-sensitive dye through the cut nerve bundle into the mice's motor nerve endings. This method allows the estimation of all parameters related to intracellular calcium changes, such as basal calcium level and calcium transient. Since the influx of calcium from the cell exterior into the nerve terminals and its binding/unbinding to the calcium-sensitive dye occur within the range of a few milliseconds, a speedy imaging system is required to record these events. Indeed, high-speed cameras are commonly used for the registration of fast calcium changes, but they have low image resolution parameters. The protocol presented here for recording calcium transient allows extremely good spatial-temporal resolution provided by confocal microscopy.
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Affiliation(s)
- Nikita V Zhilyakov
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS
| | - Arsenii Y Arkhipov
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS
| | - Eduard F Khaziev
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS; Department of Radiophotonics and Microwave Technologies, Kazan National Research Technical University named after A.N. Tupolev
| | | | - Dmitry V Samigullin
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS; Department of Radiophotonics and Microwave Technologies, Kazan National Research Technical University named after A.N. Tupolev;
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Faizullin BA, Strelnik ID, Dayanova IR, Gerasimova TP, Kholin KV, Nizameev IR, Voloshina AD, Gubaidullin AT, Fedosimova SV, Mikhailov MA, Sokolov MN, Sibgatullina GV, Samigullin DV, Petrov KA, Karasik AA, Mustafina AR. Structure impact on photodynamic therapy and cellular contrasting functions of colloids constructed from dimeric Au(I) complex and hexamolybdenum clusters. Mater Sci Eng C Mater Biol Appl 2021; 128:112355. [PMID: 34474903 DOI: 10.1016/j.msec.2021.112355] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/23/2021] [Accepted: 07/29/2021] [Indexed: 01/11/2023]
Abstract
Electrostatically driven self-assembly of [Au2L2]2+ (L is cyclic PNNP ligand) with [{Mo6I8}(L')6]2- (L' = I-, CH3COO-) in aqueous solutions is introduced as facile route for combination of therapeutic and cellular contrasting functions within heterometallic colloids (Mo6-Au2). The nature of L' affects the size and aggregation behavior of crystalline Mo6-Au2 aggregates, which in turn affect the luminescence of the cluster units incorporated into Mo6-Au2 colloids. The spin trap facilitated electron spin resonance spectroscopy technique indicates that the level of ROS generated by Mo6-Au2 colloids is also affected by their size. Both (L' = I-, CH3COO-) Mo6-Au2 colloids undergo cell internalization, which is enhanced by their assembly with poly-DL-lysine (PL) for L' = CH3COO-, but remains unchanged for L' = I-. The colloids PL-Mo6-Au2 (L' = CH3COO-) are visualized as huge crystalline aggregates both outside and inside the cell cytoplasm by confocal microscopy imaging of the incubated cells, while the smaller sized (30-50 nm) PL-Mo6-Au2 (L' = I-) efficiently stain the cell nuclei. Quantitative colocalization analysis of PL-Mo6-Au2 (L' = CH3COO-) in lysosomal compartments points to the fast endo-lysosomal escape of the colloids followed by their intracellular aggregation. The cytotoxicity of PL-Mo6-Au2 differs from that of Mo6 and Au2 blocks, predominantly acting through apoptotic pathway. The photodynamic therapeutic effect of the PL-Mo6-Au2 colloids on the cancer cells correlates with their intracellular trafficking and aggregation.
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Affiliation(s)
- Bulat A Faizullin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., 420088 Kazan, Russian Federation; Kazan (Volga region) Federal University, 18 Kremlyovskaya str., 420008 Kazan, Russian Federation.
| | - Igor D Strelnik
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - Irina R Dayanova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - Tatyana P Gerasimova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - Kirill V Kholin
- Kazan National Research Technical University named after A.N. Tupolev - KAI, 10 K. Marx str., 420111 Kazan, Russian Federation
| | - Irek R Nizameev
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - Alexandra D Voloshina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - Aidar T Gubaidullin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - Svetlana V Fedosimova
- Kazan (Volga region) Federal University, 18 Kremlyovskaya str., 420008 Kazan, Russian Federation
| | - Maxim A Mikhailov
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., 630090 Novosibirsk, Russian Federation
| | - Maxim N Sokolov
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., 630090 Novosibirsk, Russian Federation
| | - Guzel V Sibgatullina
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevski str., 420111 Kazan, Russian Federation
| | - Dmitry V Samigullin
- Kazan National Research Technical University named after A.N. Tupolev - KAI, 10 K. Marx str., 420111 Kazan, Russian Federation; Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevski str., 420111 Kazan, Russian Federation
| | - Konstantin A Petrov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - Andrey A Karasik
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - Asiya R Mustafina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., 420088 Kazan, Russian Federation
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7
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Ibragimova AR, Gabdrakhmanov DR, Valeeva FG, Vasileva LA, Sapunova AS, Voloshina AD, Saifina AF, Gubaidullin AT, Danilaev MP, Egorova SR, Tyryshkina AA, Lamberov AA, Khamatgalimov AR, Sibgatullina GV, Samigullin DV, Petrov KA, Zakharova LY, Sinyashin OG. Mitochondria-targeted mesoporous silica nanoparticles noncovalently modified with triphenylphosphonium cation: Physicochemical characteristics, cytotoxicity and intracellular uptake. Int J Pharm 2021; 604:120776. [PMID: 34098055 DOI: 10.1016/j.ijpharm.2021.120776] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 06/01/2021] [Accepted: 06/02/2021] [Indexed: 12/22/2022]
Abstract
Novel nanocomposite system based on mesoporous silica nanoparticles (MSNs) noncovalently modified with hexadecyltriphenylphosphonium bromide (HTPPB) has been prepared, thoroughly characterized and used for encapsulation of model cargo Rhodamine B (RhB). The high encapsulation efficacy of this dye by HTPPB-modified mesoporous particles was demonstrated by spectrophotometry and thermography techniques. The bioavailability of MSN@HTPPB was testified. Cytotoxicity assay revealed that a marked suppression of M-HeLa cancer cells (epithelioid carcinoma of the cervix) occurs at concentration of 0.06 μg/mL, while the higher viability of Chang liver normal cell line was preserved in the concentration range of 0.98-0.06 μg/mL. Hemolysis assay demonstrated that only 2% of red blood cells are destructed at ~ 30 μg/mL concentration. This allows us to select the most harmless compositions based on MSN@HTPPB with minimal side effects toward normal cells and recommend them for the development of antitumor formulations. Fluorescence microscopy technique testified satisfactory penetration of HTPPB-modified carriers into M-HeLa cells. Importantly, modification of the MSN with HTPPB is shown to promote efficient delivery to mitochondria. To the best of our knowledge, it is one of the first successful examples of noncovalent surface modification of the MSNs with lipophilic phosphonium cation that improves targeted delivery of loads to mitochondria.
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Affiliation(s)
- Alsu R Ibragimova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
| | - Dinar R Gabdrakhmanov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation.
| | - Farida G Valeeva
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
| | - Leysan A Vasileva
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
| | - Anastasiia S Sapunova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
| | - Alexandra D Voloshina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
| | - Alina F Saifina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
| | - Aidar T Gubaidullin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
| | - Maxim P Danilaev
- Kazan National Research Technical University Named After A. N. Tupolev - KAI, Kazan 420111, Russian Federation
| | - Svetlana R Egorova
- Kazan (Volga Region) Federal University, Kazan 420008, Russian Federation
| | - Anna A Tyryshkina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
| | | | - Ayrat R Khamatgalimov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
| | - Gusel V Sibgatullina
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan 420111, Russian Federation
| | - Dmitry V Samigullin
- Kazan National Research Technical University Named After A. N. Tupolev - KAI, Kazan 420111, Russian Federation; Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan 420111, Russian Federation
| | - Konstantin A Petrov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
| | - Lucia Ya Zakharova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
| | - Oleg G Sinyashin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Kazan 420088, Russian Federation
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8
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Kuznetsova DA, Vasileva LA, Gaynanova GA, Pavlov RV, Sapunova AS, Voloshina AD, Sibgatullina GV, Samigullin DV, Petrov KA, Zakharova LY, Sinyashin OG. Comparative study of cationic liposomes modified with triphenylphosphonium and imidazolium surfactants for mitochondrial delivery. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115703] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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9
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Kuznetsova DA, Gabdrakhmanov DR, Gaynanova GA, Vasileva LA, Kuznetsov DM, Lukashenko SS, Voloshina AD, Sapunova AS, Nizameev IR, Sibgatullina GV, Samigullin DV, Kadirov MK, Petrov KA, Zakharova LY. Novel biocompatible liposomal formulations for encapsulation of hydrophilic drugs – Chloramphenicol and cisplatin. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125673] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Arkhipov AY, Khaziev EF, Skorinkin AI, Bukharaeva EA, Samigullin DV. Enhancement of the Temporal Resolution of Fluorescent Signals Acquired by the Confocal Microscope. Microsc Microanal 2020; 26:204-210. [PMID: 32115011 DOI: 10.1017/s1431927620000148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Here, we describe a method of acquisition of fast fluorescent signals with the help of the laser scanning confocal microscope (LSCM). Our method permits an increase in the temporal resolution of acquired signals. The method is based on LSCM recordings of fast fluorescent signals with the shortest achievable time sweep, which are performed with the help of a proprietary algorithm. A series of recordings is made in multiple steps; at each step, the fluorescent signal is incremented by a time interval smaller than the time sweep of the frame of LSCM. The size of the increment determines the achievable time resolution. The convolution of the recorded images results in a signal with the temporal resolution determined by the chosen time increment. This method was applied to register the change in fluorescence (calcium transient) of calcium dye preloaded into peripheral nerve endings by electrical stimulation of the motor nerve. Calculated parameters of the calcium transient were identical to the parameters obtained earlier with the help of a high-speed camera and photodiode. We conclude that the method described here can be applied for the registration of fast fluorescent signals by LSCM with a high spatial and temporal resolution.
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Affiliation(s)
- Arsenii Y Arkhipov
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 420111Kazan, Russia
- Department of Radiophotonics and Microwave Technologies, Kazan National Research Technical University named after A.N. Tupolev, 420111Kazan, Russia
| | - Eduard F Khaziev
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 420111Kazan, Russia
- Department of Radiophotonics and Microwave Technologies, Kazan National Research Technical University named after A.N. Tupolev, 420111Kazan, Russia
- Open Laboratory of Neuropharmacology, Kazan Federal University, 420111Kazan, Russia
| | - Andrey I Skorinkin
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 420111Kazan, Russia
| | - Ellya A Bukharaeva
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 420111Kazan, Russia
| | - Dmitry V Samigullin
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 420111Kazan, Russia
- Department of Radiophotonics and Microwave Technologies, Kazan National Research Technical University named after A.N. Tupolev, 420111Kazan, Russia
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11
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Kuznetsova DA, Gaynanova GA, Vasileva LA, Sibgatullina GV, Samigullin DV, Sapunova AS, Voloshina AD, Galkina IV, Petrov KA, Zakharova LY. Mitochondria-targeted cationic liposomes modified with alkyltriphenylphosphonium bromides loaded with hydrophilic drugs: preparation, cytotoxicity and colocalization assay. J Mater Chem B 2019; 7:7351-7362. [PMID: 31696196 DOI: 10.1039/c9tb01853k] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The purpose of this work was to obtain cationic liposomes based on 1,2-dipalmitoyl-sn-glycero-3-phosphocholine noncovalently modified using alkyltriphenylphosphonium bromides (TPPB-n) with different lengths of hydrocarbon tail for targeted delivery to mitochondria. The hydrodynamic diameter and electrokinetic potential of hybrid liposomes depending on the lipid/surfactant ratio were monitored in time with the aim to optimize the composition with sufficient stability and positive charge for mitochondria-targeted delivery. It was found that increasing the alkyl tail length of the surfactant (up to TPPB-14) leads to an increase in the positive charge of the liposomes. The most optimal results of stability were obtained for hybrid liposomes based on 1,2-dipalmitoyl-sn-glycero-3-phosphocholine and TPPB-12, TPPB-14. The obtained modified liposomes were loaded with hydrophilic substrates (a model probe Rhodamine B and medicines metronidazole and doxorubicin). This is one of the first examples of fabrication of liposomes noncovalently modified using an amphiphilic TPP cation, with the alkyl tail length of surfactant and TPP/lipid ratio optimized in terms of stability of the liposomes and the binding/release behavior of hydrophilic probes. Using the confocal microscopy method, it was shown that modification of liposomes with a triphenylphosphonium cation results in targeted delivery of encapsulated compounds to mitochondria.
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Affiliation(s)
- Darya A Kuznetsova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., Kazan, 420088, Russian Federation.
| | - Gulnara A Gaynanova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., Kazan, 420088, Russian Federation.
| | - Leysan A Vasileva
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., Kazan, 420088, Russian Federation. and Kazan National Research Technological University, 68 Karl Marx str., Kazan, 420015, Russian Federation
| | - Guzel V Sibgatullina
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevski str., Kazan, 420111, Russian Federation
| | - Dmitry V Samigullin
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevski str., Kazan, 420111, Russian Federation
| | - Anastasiia S Sapunova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., Kazan, 420088, Russian Federation.
| | - Alexandra D Voloshina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., Kazan, 420088, Russian Federation.
| | - Irina V Galkina
- Kazan Federal University, 18 Kremlyovskaya str., Kazan, 420008, Russian Federation
| | - Konstantin A Petrov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., Kazan, 420088, Russian Federation. and Kazan Federal University, 18 Kremlyovskaya str., Kazan, 420008, Russian Federation
| | - Lucia Ya Zakharova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., Kazan, 420088, Russian Federation.
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12
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Diuba AV, Samigullin DV, Kaszas A, Zonfrillo F, Malkov A, Petukhova E, Casini A, Arosio D, Esclapez M, Gross CT, Bregestovski P. CLARITY analysis of the Cl/pH sensor expression in the brain of transgenic mice. Neuroscience 2019; 439:181-194. [PMID: 31302264 DOI: 10.1016/j.neuroscience.2019.07.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 07/01/2019] [Accepted: 07/02/2019] [Indexed: 10/26/2022]
Abstract
Genetically encoded biosensors are widely used in cell biology for the non-invasive imaging of concentrations of ions or the activity of enzymes, to evaluate the distribution of small molecules, proteins and organelles, and to image protein interactions in living cells. These fluorescent molecules can be used either by transient expression in cultured cells or in entire organisms or through stable expression by producing transgenic animals characterized by genetically encoded and heritable biosensors. Using the mouse Thy1 mini-promoter, we generated a line of transgenic mice expressing a genetically encoded sensor for the simultaneous measurements of intracellular Cl- and pH. This construct, called ClopHensor, consists of a H+- and Cl--sensitive variant of the enhanced green fluorescent protein (E2GFP) fused with a red fluorescent protein (DsRedm). Stimulation of hippocampal Schaffer collaterals proved that the sensor is functionally active. To reveal the expression pattern of ClopHensor across the brain of Thy1::ClopHensor mice, we obtained transparent brain samples using the CLARITY method and imaged them with confocal and light-sheet microscopy. We then developed a semi-quantitative approach to identify brain structures with high intrinsic sensor fluorescence. This approach allowed us to assess cell morphology and track axonal projection, as well as to confirm E2GFP and DsRedm fluorescence colocalization. This analysis also provides a map of the brain areas suitable for non-invasive monitoring of intracellular Cl-/pH in normal and pathological conditions. This article is part of a Special Issue entitled: Honoring Ricardo Miledi - outstanding neuroscientist of XX-XXI centuries.
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Affiliation(s)
- Artem V Diuba
- Aix-Marseille University, INSERM, INS, Institut of System Neurosciences, 13005 Marseille, France; A.N. Belozersky Institute of Physico-Chemical Biology, M.V. Lomonosov Moscow State University, 119992, Moscow, Russia
| | - Dmitry V Samigullin
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 420111, Kazan, Russia; Department of Radiophotonics and microwave technologies, Kazan National Research Technical University named after A.N.Tupolev, 420111, Kazan, Russia; Open Laboratory of Neuropharmacology, Kazan Federal University,420111, Kazan, Russia
| | - Attila Kaszas
- Aix-Marseille University, INSERM, INS, Institut of System Neurosciences, 13005 Marseille, France; Institut de Neurosciences de la Timone, CNRS UMR 7289 & Aix- Marseille Université, 13005 Marseille, France
| | - Francesca Zonfrillo
- Epigenetics and Neurobiology Unit, European Molecular Biology Laboratory, EMBL-Rome, Via Ramarini 32, 00015 Monterotondo, ITALY
| | - Anton Malkov
- Aix-Marseille University, INSERM, INS, Institut of System Neurosciences, 13005 Marseille, France; Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290, Pushchino, Russia
| | - Elena Petukhova
- Institute of Neurosciences, Kazan Medical State University, Kazan, Russia
| | | | - Daniele Arosio
- Institute of Biophysics, National Research Council of Italy, 38123 Trento, Italy
| | - Monique Esclapez
- Aix-Marseille University, INSERM, INS, Institut of System Neurosciences, 13005 Marseille, France
| | - Cornelius T Gross
- Epigenetics and Neurobiology Unit, European Molecular Biology Laboratory, EMBL-Rome, Via Ramarini 32, 00015 Monterotondo, ITALY
| | - Piotr Bregestovski
- Aix-Marseille University, INSERM, INS, Institut of System Neurosciences, 13005 Marseille, France; Institute of Neurosciences, Kazan Medical State University, Kazan, Russia.
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Samigullin DV, Zhilyakov NV, Khaziev EF, Bukharaeva EA, Nikolsky EE. Calcium Transient and Quantal Release in Mouse Neuromuscular Junction Under Extracellular Calcium Concentration Change. BioNanoSci 2018. [DOI: 10.1007/s12668-018-0558-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Samigullin DV, Khaziev EF, Zhilyakov NV, Bukharaeva EA, Nikolsky EE. Loading a Calcium Dye into Frog Nerve Endings Through the Nerve Stump: Calcium Transient Registration in the Frog Neuromuscular Junction. J Vis Exp 2017. [PMID: 28715368 PMCID: PMC5609652 DOI: 10.3791/55122] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
One of the most feasible methods of measuring presynaptic calcium levels in presynaptic nerve terminals is optical recording. It is based on using calcium-sensitive fluorescent dyes that change their emission intensity or wavelength depending on the concentration of free calcium in the cell. There are several methods used to stain cells with calcium dyes. Most common are the processes of loading the dyes through a micropipette or pre-incubating with the acetoxymethyl ester forms of the dyes. However, these methods are not quite applicable to neuromuscular junctions (NMJs) due to methodological issues that arise. In this article, we present a method for loading a calcium-sensitive dye through the frog nerve stump of the frog nerve into the nerve endings. Since entry of external calcium into nerve terminals and the subsequent binding to the calcium dye occur within the millisecond time-scale, it is necessary to use a fast imaging system to record these interactions. Here, we describe a protocol for recording the calcium transient with a fast CCD camera.
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Affiliation(s)
- Dmitry V Samigullin
- Laboratory of Biophysics of Synaptic Processes, Kazan Scientific Centre, Kazan Institute of Biochemistry and Biophysics, Russian Academy of Sciences; Open Laboratory of Neuropharmacology, Kazan Federal University; Department of Radiophotonics and Microwave Technologies, A.N. Tupolev Kazan National Research Technical University;
| | - Eduard F Khaziev
- Laboratory of Biophysics of Synaptic Processes, Kazan Scientific Centre, Kazan Institute of Biochemistry and Biophysics, Russian Academy of Sciences; Open Laboratory of Neuropharmacology, Kazan Federal University; Department of Radiophotonics and Microwave Technologies, A.N. Tupolev Kazan National Research Technical University
| | - Nikita V Zhilyakov
- Laboratory of Biophysics of Synaptic Processes, Kazan Scientific Centre, Kazan Institute of Biochemistry and Biophysics, Russian Academy of Sciences; Open Laboratory of Neuropharmacology, Kazan Federal University
| | - Ellya A Bukharaeva
- Laboratory of Biophysics of Synaptic Processes, Kazan Scientific Centre, Kazan Institute of Biochemistry and Biophysics, Russian Academy of Sciences; Open Laboratory of Neuropharmacology, Kazan Federal University
| | - Eugeny E Nikolsky
- Laboratory of Biophysics of Synaptic Processes, Kazan Scientific Centre, Kazan Institute of Biochemistry and Biophysics, Russian Academy of Sciences; Open Laboratory of Neuropharmacology, Kazan Federal University; Department of Medical and Biological Physics, Kazan State Medical University
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Samigullin DV, Khaziev EF, Zhilyakov NV, Sudakov IA, Bukharaeva EA, Nikolsky EE. Calcium Transient Registration in Response to Single Stimulation and During Train of Pulses in Mouse Neuromuscular Junction. BioNanoSci 2016. [DOI: 10.1007/s12668-016-0318-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Islamov RR, Samigullin DV, Rizvanov AA, Bondarenko NI, Nikolskiy EE. Synaptosome-associated protein 25 (SNAP25) synthesis in terminal buttons of mouse motor neuron. DOKL BIOCHEM BIOPHYS 2015; 464:272-4. [PMID: 26518545 DOI: 10.1134/s1607672915050026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Indexed: 11/23/2022]
Abstract
Previously, we formulated the hypothesis of compartmentalized protein synthesis in axons of motor neurons. In the axon hillock, along the entire length of the axon and in its ending, specific proteins are locally synthesized, which ensure the function of each compartment. In support of this hypothesis, in this work we studied the local protein synthesis in mouse motor nerve ending.
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Affiliation(s)
- R R Islamov
- Kazan State Medical University, ul. Butlerova 49, Kazan, 420012, Tatarstan, Russia
| | - D V Samigullin
- Kazan Institute of Biochemistry and Biophysics, Kazan Scientific Center, Russian Academy of Sciences, ul. Lobachevskogo 2/31, Kazan, 420111, Russia. .,Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, Kazan, 420008, Tatarstan, Russia.
| | - A A Rizvanov
- Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, Kazan, 420008, Tatarstan, Russia
| | - N I Bondarenko
- Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, Kazan, 420008, Tatarstan, Russia
| | - E E Nikolskiy
- Kazan State Medical University, ul. Butlerova 49, Kazan, 420012, Tatarstan, Russia.,Kazan Institute of Biochemistry and Biophysics, Kazan Scientific Center, Russian Academy of Sciences, ul. Lobachevskogo 2/31, Kazan, 420111, Russia.,Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, Kazan, 420008, Tatarstan, Russia
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17
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Khuzakhmetova BF, Samigullin DV, Nurullin LF, Nikol'skiĭ EE, Bukhareva ÉA. [Neuromuscular synaptic transmission at different stages of postnatal development in rats]. Ross Fiziol Zh Im I M Sechenova 2012; 98:1544-1554. [PMID: 23461198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
On the nerve-muscle preparation of rats diaphragm muscle on different stages of postnatal development, the comparison of morphological features and functions of synaptic apparatus, including induced secretion time parameters was carried out. It was found that, along with the reduced, compared to the adult animals, area of nerve endings in the newborn the speed of the motor nerve excitation was slower, intensity of spontaneous and induced secretion of quantum fluctuations was reduced and real synaptic delays in the end plate were intense. Severe degree of acetylcholine quanta asynchronous secretion with longer open state of the ion channel in newborns synapses can compensate reduction in reliability of synaptic transmission due to a decrease of the quantal content of the postsynaptic response.
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Khaziev EF, Fatikhov NF, Samigullin DV, Barrett GL, Bukharaeva EA, Nikolsky EE. Decreased entry of calcium into motor nerve endings upon activation of presynaptic cholinergic receptors. Dokl Biol Sci 2012; 446:283-285. [PMID: 23129273 DOI: 10.1134/s0012496612050080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Indexed: 06/01/2023]
Affiliation(s)
- E F Khaziev
- Kazan Institute of Biochemistry and Biophysics, Russian Academy of Sciences, Kazan, Russia
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19
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Nurullin LF, Mukhitov AR, Tsentsevytsky AN, Petrova NV, Samigullin DV, Malomouzh AI, Bukharaeva EA, Vyskočil F, Nikolsky EE. Voltage-dependent P/Q-type calcium channels at the frog neuromuscular junction. Physiol Res 2011; 60:815-23. [PMID: 21812515 DOI: 10.33549/physiolres.932219] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
It is well known that antagonists of N-type voltage-gated calcium channels inhibit the evoked quantal release of acetylcholine in amphibian neuromuscular synapses. This, however, does not exclude the functional expression of other types of voltage-gated calcium channels in these nerve terminals. Using immunocytochemistry, we detected the expression of the alpha1A subunit of P/Q-type calcium channels (that is otherwise typical of mammalian motor nerve endings) in the frog neuromuscular junction. In addition, we demonstrated that the P/Q-type channel blocker omega-agatoxin IVA (20 nM) reduced the action potential-induced calcium transient and significantly decreased both spontaneous and evoked mediator release. Our data indicates the functional expression of P/Q-type calcium channels in the frog motor nerve ending which participate in acetylcholine release.
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Affiliation(s)
- L F Nurullin
- Kazan Institute of Biochemistry and Biophysics, Russian Academy of Sciences, Kazan, Russia
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20
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Samigullin DV, Vasin AL, Bukharaeva EA, Nikolsky EE. Characteristics of calcium transient in different parts of frog nerve terminal in response to nerve impulse. Dokl Biol Sci 2010; 431:83-85. [PMID: 20506840 DOI: 10.1134/s0012496610020043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Affiliation(s)
- D V Samigullin
- Kazan Institute of Biochemistry and Biophysics, Kazan Research Center, Russian Academy of Sciences, POB 30, Kazan 420111, Republic of Tatarstan, Russia
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Giniatullin RA, Samigullin DV, Grishin SN, Bukharaeva EA. The effects of carbachol on the proximal and distal parts of frog motor nerve endings. Neurosci Behav Physiol 2002; 32:589-93. [PMID: 12469885 DOI: 10.1023/a:1020401509774] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Cholinomimetics not only activate postsynaptic cholinoreceptors in neuromuscular synapses, but also alter the process of acetylcholine secretion from nerve endings. However, the mechanism of action of cholinomimetics on the secretory process remains unidentified. We approached the question of the mechanism of the presynaptic action of cholinomimetics in the present study by investigating the effects of the n,m-cholinomimetic carbachol on nerve ending currents and postsynaptic membrane currents. Carbachol induced decreases in the postsynaptic response, without affecting the duration and amplitude of the nerve ending current in both the central and distal part of the nerve ending. However, carbachol increased the time between the arrival of the presynaptic action potential and the start of transmitter secretion. This effect on synaptic delay was more marked in the distal parts of the ending. The action of another potential modulator, extracellular potassium, was accompanied by decreases in presynaptic currents and also by increases in synaptic delay. These data provide evidence for the suppressive effect of carbachol on acetylcholine secretion acting via presynaptic metabotropic cholinoreceptors which control the level and time course of secretion of neurotransmitter quanta.
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Affiliation(s)
- R A Giniatullin
- Kazan' State Medical University, 49 Butlerov Street, 420012 Kazan', Russia
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22
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Nikol'kii EE, Bukharaeva EA, Samigullin DV, Gainulo RK. Characteristics of the time course of evoked secretion of transmitter quanta in different parts of the motor nerve ending in the frog. Neurosci Behav Physiol 2002; 32:265-74. [PMID: 12135340 DOI: 10.1023/a:1015010307181] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Experiments were performed on neuromuscular preparations from frogs, in which three extracellular microelectrodes were used to record nerve ending currents and single-quantum endplate currents simultaneously from the proximal, central, and distal parts of single synaptic contacts. The rate of propagation of excitation across terminals was measured. along with the minimum synaptic delay, the intensity. and the degree of synchronicity of the secretion of transmitter quanta in different parts of the nerve ending, and the relationships between these factors and the calcium ion concentration in the medium. These studies showed that along with gradients in the rate of conduction of excitation and the intensity of secretion in different parts of the ending. there were also differences in the kinetics of the release of transmitter quanta. As the distance from the end of the myelinated part of the axon increased, the rate of conduction of the nerve impulse and the duration of the synaptic delay decreased, while the synchronicity of the release of quanta increased. Increases in the calcium concentration in the medium produced greater increases in the synchronicity of transmitter quantum release in the distal parts of the synapse than in the proximal parts. Mathematical modeling of multiple-quantum endplate currents showed that the characteristics of the kinetics of the secretion process observed here in different parts of the nerve ending represent a factor which partially compensates for the decrease in the amplitude and extending of the duration of the leading front of the multiple-quantum endplate current which are associated with the low rate of conduction of excitation across the nerve ending. The contribution of this compensation increases as the intensity of secretion of transmitter quanta increases in the distal parts of the synaptic contact.
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Affiliation(s)
- E E Nikol'kii
- Kazan' Institute of Biochemistry and Biophysics, Russian Academy of Sciences
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23
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Bukharaeva EA, Samigullin DV, Nikol'skii EE, Vyskochil F. The role of intracellular cAMP in mediating the synchronizing action of noradrenaline on the evoked release of quanta of mediator in the frog synapse. Neuroscience and Behavioral Physiology 2001; 31:473-80. [PMID: 11693470 DOI: 10.1023/a:1010414612669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Experiments on frog neuromuscular junction preparations with extracellular recording of action currents in nerve endings and single-quantum currents from endplates were used to assess the time course of evoked quantum mediator secretion by analyzing histograms showing the distribution of true synaptic delays. Studies using the cyclic AMP analog dibutyryl-cAMP (db-cAMP), the adenylate cyclase activator forskolin, and the nucleotide-dependent phosphodiesterase inhibitor isobutylmethylxanthine, showed that these agents, like noradrenaline, altered the kinetics of secretion of quanta, leading to synchronization of the release of mediator. After preliminary treatment of the neuromuscular preparation with db-cAMP, forskolin, or isobutylmethylxanthine, noradrenaline did not induce the synchronization of mediator release in quanta. It was concluded that the action of noradrenaline on the time course of secretion is mediated by activation of presynaptic beta receptors, increased adenylate cyclase activity, and increases in intracellular cAMP levels.
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Affiliation(s)
- E A Bukharaeva
- Kazan' State Medical University, and Kazan' Institute of Biochemistry and Biophysics, Russia
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Giniatullin RA, Samigullin DV, Grishin SN, Bukharaeva EA. [Effect of carbacholine on proximal and distal regions of motor nerve terminals in the frog]. Ross Fiziol Zh Im I M Sechenova 2001; 87:507-13. [PMID: 11449978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
Carbacholine depressed postsynaptic currents in the frog m. sartorius leaving intact presynaptic currents in proximal and distal portions of the motor nerve ending. The carbacholine depressing action was followed by an increase in the time gap between the beginning of presynaptic depolarisation and subsequent quantal release. This effect was considerably more obvious in the distal portions of the nerve endings. Effect of extracellular potassium was evident in a diminishing of presynaptic currents due to membrane depolarisation. The data obtained suggest that carbacholine presynaptically depresses synaptic transmission via metabotropic cholinergic receptors controlling the time course of the transmitter release.
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Affiliation(s)
- R A Giniatullin
- Kazan State Medical University, Kazan, Butlerov St., 49, 420012
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Nikol'skiĭ EE, Bukharaeva EA, Samigullin DV, Gaĭnulov RK. [The time course of the evoked secretion of the mediator quanta in various regions of the frog motor nerve ending]. Ross Fiziol Zh Im I M Sechenova 2000; 86:1195-209. [PMID: 11081225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Apart from the fact that the gradient of the velocity of the AP propagation along the nerve terminal and the intensity of secretion do exist, the kinetics of a quanta transmitter release may also be revealed in different parts of the terminal. The velocity of the propagation and the minimum sympatric delay tend to diminish along with moving away from the myelinated part of axon, whereas the synchronicity of the quanta release rises. The distinctions in the time course of secretion in different parts of the terminal were amplified when the calcium ion concentration in the medium was enhanced. The observed peculiarities of the secretion kinetics in different regions of nerve ending seem to compensate for diminishing of the amplitude of multiquantal endplate current.
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Affiliation(s)
- E E Nikol'skiĭ
- Kazan Institute of Biochemistry and Biophysics, Russian Acad. Sci., Russia
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Bukharaeva EA, Samigullin DV, Nikol'skiĭ EE, Vyskocil F. [Intracellular cAMP involvement in the synchronized activity of noradrenaline in response to evoked release of the transmitter quanta in the frog synapses]. Ross Fiziol Zh Im I M Sechenova 2000; 86:379-91. [PMID: 10870213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
An analogue of cyclic AMP (db-cAMP) penetrating into the frog neuromuscular junction's cell, as well as the adenylyl cyclase activator forskolin, and inhibitor of nucleotide-depending phosphodiesterase isobutilmethylxantine alter the kinetics of the quanta secretion resulting in synchronizing of the process of the transmitter release. Following a db-cAMP preliminary action, no such synchronizing of the transmitter release occurred. Action of noradrenaline on the time course of the secretion seems to be realised through activation of presynaptic beta-adrenoreceptors, augmentation of the adenylyl cyclase activity, and the rise of the intracellular cAMP.
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