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001     268513
005     20240403131605.0
024 7 _ |a pmc:PMC10917450
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024 7 _ |a 10.1371/journal.pcbi.1011267
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037 _ _ |a DZNE-2024-00259
041 _ _ |a English
082 _ _ |a 610
100 1 _ |a Groden, Moritz
|0 0000-0002-6851-2868
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245 _ _ |a A biologically inspired repair mechanism for neuronal reconstructions with a focus on human dendrites.
260 _ _ |a San Francisco, Calif.
|c 2024
|b Public Library of Science
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520 _ _ |a Investigating and modelling the functionality of human neurons remains challenging due to the technical limitations, resulting in scarce and incomplete 3D anatomical reconstructions. Here we used a morphological modelling approach based on optimal wiring to repair the parts of a dendritic morphology that were lost due to incomplete tissue samples. In Drosophila, where dendritic regrowth has been studied experimentally using laser ablation, we found that modelling the regrowth reproduced a bimodal distribution between regeneration of cut branches and invasion by neighbouring branches. Interestingly, our repair model followed growth rules similar to those for the generation of a new dendritic tree. To generalise the repair algorithm from Drosophila to mammalian neurons, we artificially sectioned reconstructed dendrites from mouse and human hippocampal pyramidal cell morphologies, and showed that the regrown dendrites were morphologically similar to the original ones. Furthermore, we were able to restore their electrophysiological functionality, as evidenced by the recovery of their firing behaviour. Importantly, we show that such repairs also apply to other neuron types including hippocampal granule cells and cerebellar Purkinje cells. We then extrapolated the repair to incomplete human CA1 pyramidal neurons, where the anatomical boundaries of the particular brain areas innervated by the neurons in question were known. Interestingly, the repair of incomplete human dendrites helped to simulate the recently observed increased synaptic thresholds for dendritic NMDA spikes in human versus mouse dendrites. To make the repair tool available to the neuroscience community, we have developed an intuitive and simple graphical user interface (GUI), which is available in the TREES toolbox (www.treestoolbox.org).
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650 _ 2 |a Humans
|2 MeSH
650 _ 2 |a Mice
|2 MeSH
650 _ 2 |a Animals
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650 _ 2 |a Dendrites: physiology
|2 MeSH
650 _ 2 |a Neurons: physiology
|2 MeSH
650 _ 2 |a Pyramidal Cells: physiology
|2 MeSH
650 _ 2 |a Hippocampus: physiology
|2 MeSH
650 _ 2 |a Drosophila
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650 _ 2 |a Mammals
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700 1 _ |a Moessinger, Hannah M
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700 1 _ |a Schaffran, Barbara
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700 1 _ |a DeFelipe, Javier
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700 1 _ |a Benavides-Piccione, Ruth
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700 1 _ |a Cuntz, Hermann
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700 1 _ |a Jedlicka, Peter
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773 _ _ |a 10.1371/journal.pcbi.1011267
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856 4 _ |y OpenAccess
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