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Structure, interaction and nervous connectivity of beta cell primary cilia

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Item Type:Article
Title:Structure, interaction and nervous connectivity of beta cell primary cilia
Creators Name:Müller, A., Klena, N., Pang, S., Garcia, L.E.G., Topcheva, O., Aurrecoechea Duran, S., Sulaymankhil, D., Seliskar, M., Mziaut, H., Schöniger, E., Friedland, D., Kipke, N., Kretschmar, S., Münster, C., Weitz, J., Distler, M., Kurth, T., Schmidt, D., Hess, H.F., Xu, C.S., Pigino, G. and Solimena, M.
Abstract:Primary cilia are sensory organelles present in many cell types, partaking in various signaling processes. Primary cilia of pancreatic beta cells play pivotal roles in paracrine signaling and their dysfunction is linked to diabetes. Yet, the structural basis for their functions is unclear. We present three-dimensional reconstructions of beta cell primary cilia by electron and expansion microscopy. These cilia are spatially confined within deep ciliary pockets or narrow spaces between cells, lack motility components and display an unstructured axoneme organization. Furthermore, we observe a plethora of beta cell cilia-cilia and cilia-cell interactions with other islet and non-islet cells. Most remarkably, we have identified and characterized axo-ciliary synapses between beta cell cilia and the cholinergic islet innervation. These findings highlight the beta cell cilia’s role in islet connectivity, pointing at their function in integrating islet intrinsic and extrinsic signals and contribute to understanding their significance in health and diabetes.
Keywords:Axoneme, Cilia, Inbred C57BL Mice, Insulin-Secreting Cells, Synapses, Animals, Mice
Source:Nature Communications
ISSN:2041-1723
Publisher:Nature Publishing Group
Volume:15
Number:1
Page Range:9168
Date:24 October 2024
Official Publication:https://doi.org/10.1038/s41467-024-53348-5
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