Abstract—
Perisynaptic astrocytic processes involved in the tripartite synapse functioning respond to its activation by local depolarization with calcium ions release from the intracellular stores inside nodes of astrocytic processes and develop local or generalized calcium events. However, based on the first electron microscopy studies the opinion was formed that terminal astrocytic lamellae are devoid of any organelles, including the main astrocytic calcium store – the cisternae of the smooth endoplasmic reticulum. Indeed, the analysis of smooth endoplasmic reticulum cisternae could be limited by their weak electron contrast, the studying of astrocytic processes on single sections, and insufficient optical resolution of the equipment used. Here, using serial section transmission electron microscopy and 3D reconstructions, we analyzed astrocytic processes in murine hippocampal and cortical synapses. As a result of unit membranes contrast enhancement, it was shown for the first time that perisynaptic processes of astrocytes with a morphology of thin branchlets contained two types of smooth endoplasmic reticulum cisternae and microvesicles. Unlike branchlets, membranous organelles inside terminal lamellae were comprised by only short fragments of thin smooth endoplasmic reticulum cisternae and microvesicles, whose groups tended to be located in close proximity to active zones of the most active synapses. This paper discusses both the reliability of alternative electron microscopy methods while studying astrocytic microenvironment of synapses and structure-function aspects of smooth endoplasmic reticulum cisternae compartmentalization inside the perisynaptic processes of astrocytes.
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1134%2FS0006350923020215/MediaObjects/11439_2023_9645_Fig1_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1134%2FS0006350923020215/MediaObjects/11439_2023_9645_Fig2_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1134%2FS0006350923020215/MediaObjects/11439_2023_9645_Fig3_HTML.png)
REFERENCES
A. Reichenbach, A. Derouiche, and F. Kirchhoff, Brain Res. Rev. 63, 11 (2010).
B. S. Khakh and M. V. Sofroniew, Nat. Neurosci. 18, 942 (2015).
M. Arizono, V. V. G. K. Inavalli, A. Panatier, et al., Nat. Commun. 11, 1906 (2020).
M. Armbruster, S. Naskar, J. P. Garcia, et al., Nat. Neurosci. 25, 607 (2022).
J. Špaček and A. R. Lieberman, J. Cell Sci. 46, 129 (1980).
J. Špaček and K. M. Harris, J. Neurosci. 17, 190 (1997).
Y. Wu, C. Whiteus, C. S. Xue, et al., Proc. Natl. Acad. Sci. U. S. A. 114, E4859 (2017).
J. Špaček, Anat. Embryol. 171, 235 (1985).
J. Špaček and K. M. Harris, J. Comp. Neurol. 393, 58 (1998).
R. Ventura and K. M. Harris, J. Neurosci. 19, 6897 (1999).
M. A. Xu-Friedman, K. M. Harris, and W. G. Regehr, J. Neurosci. 21, 6666 (2001).
C. Genoud, C. Quairiaux, and P. Steiner, PLoS Biol. 4, e343 (2006).
M. R. Witcher, S. A. Kirov, and K. M. Harris, Glia 55, 13 (2007).
K. Chounlamountry and J.-P. Kessler, Glia 59, 655 (2011).
M. Bellesi, L. de Vivo, G. Tononi, et al., BMC Biol. 13, 66 (2015).
P. Bezzi, V. Gundersen, J. L. Galbete, et al., Nat. Neurosci. 7, 613 (2004).
L. H. Bergersen, C. Morland, L. Ormel, et al., Cereb. Cortex 22, 1690 (2012).
I. Patrushev, N. Gavrilov, V. Turlapov, et al., Cell Calcium 54, 343 (2013).
M. J. Karnovsky, In Proceedings of the 11th Annual Meeting of the American Society for Cell Biology, (1971), Vol. 284, p. 146.
A. M. Seligman, H. L. Wasserkrug, and J. S. Hanker, J. Cell Biol. 30, 424 (1966).
B. Fernandez, I. Suarez, and G. Gonzalez, Anat. Anz. 156, 31 (1984).
A. Semyanov and A. Verkhratsky, Trends Neurosci. 44, 781 (2021).
Y. Oe, O. Baba, H. Ashida, et al., Glia 64, 1532 (2016).
N. Benmeradi, B. Payre, and S. L. Goodman, Microsc. Microanal. 21 (3), 721 (2015).
T. Hanaichi, T. Sato, T. Iwamoto, et al., J. Electron Microsc. (Tokyo) 35, 304 (1986).
S. Saalfeld, R. Fetter, A. Cardona, et al., Nat. Methods 9, 717 (2012).
J. C. Fiala, K. M. Harris, J. Microsc. 202, Pt 3, 468 (2001).
J. C. Fiala, J. Microsc. 218 (1), 52 (2005).
W. C. De Bruijn, J. Ultrastruct. Res. 42, 29 (1973).
L. A. Langford and R. E. Coggeshall, Anat. Rec. 197, 297 (1980).
E. A. Shishkova, I. V. Kraev, and V. V. Rogachevsky, Biophysics 67, 5, 752 (2022).
P. Drochmans, J. Ultrastruct. Res. 6, 141 (1962).
J. P. Revel, J. Histochem. Cytochem. 12, 104 (1964).
L.-E. Thornell, J. Ultrastruct. Res. 49, 157 (1974).
C. Prats, T. E. Graham, and J. Shearer, J. Biol. Chem. 293, 19, 7089 (2018).
K. K. Rybicka, Tissue Cell, 28, 3, 253 (1996).
M. L. Entman, S. S. Keslensky, A. Chu, et al., J. Biol. Chem. 255, 13, 6245 (1980).
Y. Hirata, M. Atsumi, Y. Ohizumi, et al., Biochem. J. 371, 81 (2003).
C. Lavoie, L. Roy, J. Lanoix, et al., Prog. Histochem. Cytochem. 46, 1 (2011).
M. S. Muller, R. Fox, A. Schousboe, et al., Glia 62, 526 (2014).
S. P. J. Brooks, B. J. Lampi, and C. G. Bihun, Contemp. Top. Lab. Anim. Sci. 38, 19 (1999).
C. W. Scouten, R. O’Connor, and M. Cunningham, J. Microsc. Today 14, 3, 26 (2006).
R. Kasukurthi, M. J. Brenner, Amy M. Moore, et al., J. Neurosci. Methods 184, 303 (2009).
S. R. Nelson, D. W. Schulz, J V. Passonneau, et al., J. Neurochem. 15, 1271 (1968).
F. D. Morgenthaler, D. M. Koski, R. Kraftsik, et al., Neurochem. Int. 48, 616 (2006).
L. F. Obel, M. S. Muller, A. B. Walls, et al., Front. Neuroenergetics 4, 3, 1 (2012).
J. S. Coggan, D. Keller, C. Calo, et al., PLoS Comput. Biol. 14, 8, e1006392 (2018).
O. H. Lowry, J. V. Passonneau, F. X. Hasselberger, et al., J. Biol. Chem. 239, 18 (1964).
H. Watanabe and J. V. Passonneau, Brain Res. 66, 147 (1974).
R. A. Swanson, S. M. Sagar, and F. R. Sharp, Neurol. Res. 11, 24 (1989).
R. A. Swanson, M. M. Morton, S. M. Sagar, et al., Neuroscience 51, 2, 451 (1992).
T. Matsui, T. Ishikawa, H. Ito, et al., J. Physiol. 590, 607 (2012).
M. K. Brewer and M. S. Gentry, in Advances in Neurobiology, 23: Brain Glycogen Metabolism (Springer Nat., Cham, 2019), pp. 17–81.
J. Hirrlinger, S. Hulsmann, and F. Kirchhoff, Eur. J. Neurosci. 20, 2235 (2004).
Y. Bernardinelli, J. Randall, E. Janett, et al., Curr. Biol. 24, 1679 (2014).
G. R. Login and A. M. Dvorak, Histochem. J. 20, 373 (1988).
G. R. Login and A. M. Dvorak, The Microwave Tool Book (Beth Israel Hospital, 1994).
F.E. Jensen and K.M. Harris, J. Neurosci. Methods 29, 217 (1989).
M. A. Sullivan, S. T. N. Aroney, S. Li, et al., Biomacromolecules 15, 660 (2014).
T. Satoh, C. A. Ross, A. Villa, et al., J. Cell Biol. 111, 615 (1990).
N. Holbro, A. Grunditz, and T. G. Oertner, Proc. Natl. Acad. Sci. U. S. A. 106, 15055 (2009).
P. Jedlicka, A. Vlachos, S. W. Schwarzacher, et al., Behav. Brain Res. 192, 12 (2008).
K. Takei, H. Stukenbrok, A. Metcalf, et al., J. Neurosci. 12, 489 (1992).
A. H. Sharp, P. S. McPherson, T. M. Dawson, et al., J. Neurosci. 13, 3051 (1993).
H. Shimizu, M. Fukaya, and M. Yamasaki, Proc. Natl. Acad. Sci. U. S. A. 105, 11998 (2008).
R. Barzan, F. Pfeiffer, and M. Kukley, Front. Neurosci. 10, 135 (2016).
J.-P. Mothet, L. Pollegioni, G. Ouanounou, et al., Proc. Natl. Acad. Sci. U. S. A. 102, 5606 (2005).
Y. Du, S. Ferro-Novick, and P. Novick, J. Cell Sci. 117, 2871 (2004).
J. Espadas, D. Pendin, R. Bocanegra, et al., Nat. Commun. 10, 5327 (2019).
S. Wang, H. Tukachinsky, F. B. Romano, et al., eLife 5, e18605 (2016).
J. D. Lindsey and M. H. Ellisman, J. Neurosci. 5, 12, 3135 (1985).
N. Rismanchi, C. Soderblom, J. Stadler, et al., Hum. Mol. Genet. 17, 11, 1591 (2008).
X. Hu and F. Wu, Prot. Cell, 6, 4, 307 (2015).
M. Krzisch, S. G. Temprana, L. A. Mongiat, et al., Brain Struct. Funct. 220, 4, 2027 (2015).
G. Mattews, Neuron 44, 223 (2004).
R. G. Parton and K. Simons, Nat. Rev. Mol. Cell Biol. 8, 185 (2007).
N. J. Willmott, K. Wong, and A. J. Strong, J. Neurosci. 20, 5, 1767 (2000).
X. Hua, E. B. Malarkey, V. Sunjara, et al., J. Neurosci. Res. 76, 86 (2004).
M. W. Sherwood, M. Arizono, C. Hisatsune, et al., Glia 65, 3, 502 (2017).
E. Shigetomi, S. Patel, and B. S. Khakh, Trends Cell Biol. 26, 4, 300 (2016).
J. Meldolesi and T. Pozzan, J. Cell Biol. 21, 142, 1395 (1998).
Y. Takumi, V. Ramirez-Leon, P. Laake, et al., Nat. Neurosci. 2, 7, 618 (1999).
M. G. Stewart, N. I. Medvedev, V. I. Popov, et al., Eur. J. Neurosci. 21, 3368 (2005).
V. I. Popov, N. I. Medvedev, I. V. Patrushev, et al., Neuroscience 149, 549 (2007).
A. Plata, A. Lebedeva, P. Denisov, et al., Front. Mol. Neurosci. 11, 215 (2018).
A. Matus, Curr. Opin. Neurobiol. 15, 76 (2005).
A. J. G. D. Holtmaat, J. T. Trachtenberg, L. Wilbrecht, et al., Neuron 45, 279 (2005).
A. H. Cornell-Bell, P. G. Thomas, and S. J. Smith, Glia 3, 322 (1990).
M. E. Brown and P. C. Bridgman, J. Neurobiol. 58, 1, 118 (2004).
S. J. Stachelek, R. A. Tuft, and L. M. Lifschitz, J. Biol. Chem. 276, 35652 (2001).
C. Cali, J. Baghabra, D.J. Boges, et al., J. Comp. Neurol. 524, 23 (2016).
M. Bellesi, L. de Vivo, S. Koebe, et al., Front. Cell Neurosci. 12, 308 (2018).
ACKNOWLEDGMENTS
The work was performed on the equipment of the Shared Core Facilities of the Pushchino Scientific Center for Biological Research (No. 670266, http://www.ckprf.ru/ckp/670266/).
Funding
The study was conducted within the framework of the State Task of the PSC RAS, project no. 075-00957-23-01; with the financial support of the Russian Foundation for Basic Research, project no. 20-34-90068.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
The authors declare that they have no conflicts of interest.
Experiments on anesthetized and unanesthetized animals were carried out in accordance with the requirements of the European Convention for the Protection of Animals 2010/63/EU. All applicable international, national and institutional principles for the care and use of animals in the performance of work have been observed.
Rights and permissions
About this article
Cite this article
Shishkova, E.A., Rogachevsky, V.V. Two Subcompartments of the Smooth Endoplasmic Reticulum in Perisynaptic Astrocytic Processes: Ultrastructure and Distribution in Hippocampal and Neocortical Synapses. BIOPHYSICS 68, 246–258 (2023). https://doi.org/10.1134/S0006350923020215
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0006350923020215