TY  - JOUR
AU  - Satarić, Miljko V.
AU  - Nemeš, Tomas
AU  - Zdravković, Slobodan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11445
AB  - Calcium is one of the most versatile messengers for intracellular signaling. In the case of cilia and flagella calcium has the central role in transfer of communications between extracellular stimuli and intracellular formation of frequency modulated signal and their deciphering by target proteins. In this paper, the diffusion of fluorescently or otherwise tagged and un-tagged Ca2＋ particles is analyzed by solving the system of pertaining reaction–diffusion equations. We used Fourier transform tools to get asymptotic eigenfunctions for tagged (un-tagged) free and buffered Ca2＋ ions. We made some numerical estimations for diffusion coefficients corroborating the fact that messages diffuse faster than Ca2＋ messengers. From the best of our knowledge, this is the first time that Ca2＋ signaling in living cells is biophysically elaborated within the framework of model presented here. We suggest the experimental assay on the basis of radioactive Ca2＋ as tagged probe.
T2  - Biosystems
T1  - Calcium messages in flagella are faster than messenger particles
VL  - 232
SP  - 105003
DO  - 10.1016/j.biosystems.2023.105003
ER  - 

@article{
author = "Satarić, Miljko V. and Nemeš, Tomas and Zdravković, Slobodan",
year = "2023",
abstract = "Calcium is one of the most versatile messengers for intracellular signaling. In the case of cilia and flagella calcium has the central role in transfer of communications between extracellular stimuli and intracellular formation of frequency modulated signal and their deciphering by target proteins. In this paper, the diffusion of fluorescently or otherwise tagged and un-tagged Ca2＋ particles is analyzed by solving the system of pertaining reaction–diffusion equations. We used Fourier transform tools to get asymptotic eigenfunctions for tagged (un-tagged) free and buffered Ca2＋ ions. We made some numerical estimations for diffusion coefficients corroborating the fact that messages diffuse faster than Ca2＋ messengers. From the best of our knowledge, this is the first time that Ca2＋ signaling in living cells is biophysically elaborated within the framework of model presented here. We suggest the experimental assay on the basis of radioactive Ca2＋ as tagged probe.",
journal = "Biosystems",
title = "Calcium messages in flagella are faster than messenger particles",
volume = "232",
pages = "105003",
doi = "10.1016/j.biosystems.2023.105003"
}

Satarić, M. V., Nemeš, T.,& Zdravković, S.. (2023). Calcium messages in flagella are faster than messenger particles. in Biosystems, 232, 105003.
https://doi.org/10.1016/j.biosystems.2023.105003

Satarić MV, Nemeš T, Zdravković S. Calcium messages in flagella are faster than messenger particles. in Biosystems. 2023;232:105003.
doi:10.1016/j.biosystems.2023.105003 .

Satarić, Miljko V., Nemeš, Tomas, Zdravković, Slobodan, "Calcium messages in flagella are faster than messenger particles" in Biosystems, 232 (2023):105003,
https://doi.org/10.1016/j.biosystems.2023.105003 . .

TY  - JOUR
AU  - Satarić, Miljko V.
AU  - Nemeš, Tomas
AU  - Satarić, Bogdan
AU  - Sekulić, Dalibor
AU  - Zdravković, Slobodan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9059
AB  - The cytoskeleton of cilia and flagella is so called axoneme a stable cylindrical architecture of nine microtubule doublets. Axoneme performs periodic bending motion by utilizing specific dynein motor family powered by ATP hydrolysis. It is still unclear how this highly organized “ciliary beat” is being initiated and strongly coordinated by the combined action of hundreds dynein motors. Based on the experimental evidences we here elaborate a plausible scenario in which actually calcium ions play the roles of catalytic activators and coordinators of dynein attachments doing it in superposition with already known mechanical control tools of “ciliary beat”. Polyelectrolyte properties of microtubules incorporated in axoneme doublets enable the formation and propagation of soliton-like “ionic clouds” of Ca2+ ions along these “coaxial nanocables”. The sliding speed of such Ca2+ “clouds” along microtubule doublets is comparable with the speed of propagation of “ciliary beat” itself. We elaborated the interplay between influx of Ca2+ ions in ciliary based body and the sliding of microtubule triplets therein. In second segment we considered how the dynein motors activated by Ca2+ ions contained within solitonic “ionic clouds” in competition with axoneme curvature regulate ciliary and flagellar beating.
T2  - Biosystems
T1  - Calcium ions tune the beats of cilia and flagella
VL  - 196
SP  - 104172
DO  - 10.1016/j.biosystems.2020.104172
ER  - 

@article{
author = "Satarić, Miljko V. and Nemeš, Tomas and Satarić, Bogdan and Sekulić, Dalibor and Zdravković, Slobodan",
year = "2020",
abstract = "The cytoskeleton of cilia and flagella is so called axoneme a stable cylindrical architecture of nine microtubule doublets. Axoneme performs periodic bending motion by utilizing specific dynein motor family powered by ATP hydrolysis. It is still unclear how this highly organized “ciliary beat” is being initiated and strongly coordinated by the combined action of hundreds dynein motors. Based on the experimental evidences we here elaborate a plausible scenario in which actually calcium ions play the roles of catalytic activators and coordinators of dynein attachments doing it in superposition with already known mechanical control tools of “ciliary beat”. Polyelectrolyte properties of microtubules incorporated in axoneme doublets enable the formation and propagation of soliton-like “ionic clouds” of Ca2+ ions along these “coaxial nanocables”. The sliding speed of such Ca2+ “clouds” along microtubule doublets is comparable with the speed of propagation of “ciliary beat” itself. We elaborated the interplay between influx of Ca2+ ions in ciliary based body and the sliding of microtubule triplets therein. In second segment we considered how the dynein motors activated by Ca2+ ions contained within solitonic “ionic clouds” in competition with axoneme curvature regulate ciliary and flagellar beating.",
journal = "Biosystems",
title = "Calcium ions tune the beats of cilia and flagella",
volume = "196",
pages = "104172",
doi = "10.1016/j.biosystems.2020.104172"
}

Satarić, M. V., Nemeš, T., Satarić, B., Sekulić, D.,& Zdravković, S.. (2020). Calcium ions tune the beats of cilia and flagella. in Biosystems, 196, 104172.
https://doi.org/10.1016/j.biosystems.2020.104172

Satarić MV, Nemeš T, Satarić B, Sekulić D, Zdravković S. Calcium ions tune the beats of cilia and flagella. in Biosystems. 2020;196:104172.
doi:10.1016/j.biosystems.2020.104172 .

Satarić, Miljko V., Nemeš, Tomas, Satarić, Bogdan, Sekulić, Dalibor, Zdravković, Slobodan, "Calcium ions tune the beats of cilia and flagella" in Biosystems, 196 (2020):104172,
https://doi.org/10.1016/j.biosystems.2020.104172 . .

TY  - JOUR
AU  - Satarić, Miljko V.
AU  - Zdravković, Slobodan
AU  - Nemeš, Tomas
AU  - Satarić, Bogdan M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9719
AB  - To adapt to changing environments cells must signal and signaling requires messengers whose concentration varies with time in space. We here consider the messenger role of calcium ions implicated in regulation of the wave-like bending dynamics of cilia and flagella. The emphasis is on microtubules as polyelectrolytes serving as transmission lines for the flow of Ca2+ signals in the axoneme. This signaling is superimposed with a geometric clutch mechanism for the regulation of flagella bending dynamics and our modeling produces results in agreement with experimental data.
T2  - European Biophysics Journal
T1  - Calcium signaling modulates the dynamics of cilia and flagella
VL  - 49
IS  - 7
SP  - 619
EP  - 631
DO  - 10.1007/s00249-020-01471-8
ER  - 

@article{
author = "Satarić, Miljko V. and Zdravković, Slobodan and Nemeš, Tomas and Satarić, Bogdan M.",
year = "2020",
abstract = "To adapt to changing environments cells must signal and signaling requires messengers whose concentration varies with time in space. We here consider the messenger role of calcium ions implicated in regulation of the wave-like bending dynamics of cilia and flagella. The emphasis is on microtubules as polyelectrolytes serving as transmission lines for the flow of Ca2+ signals in the axoneme. This signaling is superimposed with a geometric clutch mechanism for the regulation of flagella bending dynamics and our modeling produces results in agreement with experimental data.",
journal = "European Biophysics Journal",
title = "Calcium signaling modulates the dynamics of cilia and flagella",
volume = "49",
number = "7",
pages = "619-631",
doi = "10.1007/s00249-020-01471-8"
}

Satarić, M. V., Zdravković, S., Nemeš, T.,& Satarić, B. M.. (2020). Calcium signaling modulates the dynamics of cilia and flagella. in European Biophysics Journal, 49(7), 619-631.
https://doi.org/10.1007/s00249-020-01471-8

Satarić MV, Zdravković S, Nemeš T, Satarić BM. Calcium signaling modulates the dynamics of cilia and flagella. in European Biophysics Journal. 2020;49(7):619-631.
doi:10.1007/s00249-020-01471-8 .

Satarić, Miljko V., Zdravković, Slobodan, Nemeš, Tomas, Satarić, Bogdan M., "Calcium signaling modulates the dynamics of cilia and flagella" in European Biophysics Journal, 49, no. 7 (2020):619-631,
https://doi.org/10.1007/s00249-020-01471-8 . .