Brain organoids derived from iPSCs of patients are a powerful avenue to investigate the pathophysiological processes. Scientists generated iPSC-derived cerebral organoids from monozygotic twins discordant for psychosis.
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Sawada, T., Chater, T. E., Sasagawa, Y., Yoshimura, M., Fujimori-Tonou, N., Tanaka, K., Benjamin, K. J. M., Paquola, A. C. M., Erwin, J. A., Goda, Y., Nikaido, I., & Kato, T. (2020). Developmental excitation-inhibition imbalance underlying psychoses revealed by single-cell analyses of discordant twins-derived cerebral organoids. Molecular Psychiatry, 1–17. https://doi.org/10.1038/s41380-020-0844-z Cite
Investigators established anti-AQP4 recombinant autoantibodies from plasmablasts in neuromyelitis optica spectrum disorder patient’s cereberospinal fluid.
Scientists present an experimental system based on 3D scaffold-based cortical neuron cultures in which they expressed the genetically encoded calcium indicator GCaMP6f to record neuronal activity at the millimeter-scale.
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Functional characterization of three-dimensional cortical cultures for in vitro modeling of brain networks: iScience. (n.d.). Retrieved August 6, 2020, from https://www.cell.com/iscience/fulltext/S2589-0042(20)30624-6 Cite
Researchers generated distinct imageable syngeneic mouse glioblastoma-tumor models and utilized RNA-sequencing, CyTOF and correlative immunohistochemistry to assess immune-profiles in these models.
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Scientists showed that notch signaling-deficient astrocytes could generate new neurons after injury. Using single-cell RNA sequencing, they found that, when notch signaling was blocked, astrocytes transitioned to a neural stem cell-like state.
[Cell Stem Cell]
Researchers used single-cell RNA sequencing to characterize neurogenesis by notch-depleted striatal astrocytes in vivo.
Research conducted over the past 10 years has revealed that cortical GABAergic projection neurons are highly diverse in terms of molecular marker expression, synaptic targeting, activity pattern during distinct behavioural states and precise temporal recruitment relative to ongoing neuronal network oscillations.
[Nature Reviews Neuroscience]
The authors investigated the role of V1G1 in glioma stem cell small extracellular vesicles and their effects on primary brain cultures.
[Molecular Cancer Research]
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Bertolini, I., Storaci, A. M., Terrasi, A., Cristofori, A. D., Locatelli, M., Caroli, M., Ferrero, S., Altieri, D. C., & Vaira, V. (2020). Interplay between V-ATPase G1 and small EV-miRNAs modulates ERK1/2 activation in GBM stem cells and non-neoplastic milieu. Molecular Cancer Research. https://doi.org/10.1158/1541-7786.MCR-20-0078 Cite
Investigators demonstrated that human midbrain organoids showed essential neuronal functional properties as spontaneous electrophysiological activity of different neuronal subtypes, including dopaminergic, GABAergic, glutamatergic and serotonergic neurons.
[Cell and Tissue Research]
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Smits, L. M., Magni, S., Kinugawa, K., Grzyb, K., Luginbühl, J., Sabate-Soler, S., Bolognin, S., Shin, J. W., Mori, E., Skupin, A., & Schwamborn, J. C. (2020). Single-cell transcriptomics reveals multiple neuronal cell types in human midbrain-specific organoids. Cell and Tissue Research. https://doi.org/10.1007/s00441-020-03249-y Cite
Neural ribbons offer multifunctionality in vitro including co-encapsulation of the injury site ESM modifier chondroitinase ABC, tested in glial scar models, and ability of cervically-patterned spinal cord neural stem cells to differentiate within neural ribbons and project axons for integration with 3D external matrices.
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Olmsted, Z. T., Stigliano, C., Badri, A., Zhang, F., Williams, A., Koffas, M. A. G., Xie, Y., Linhardt, R. J., Cibelli, J., Horner, P. J., & Paluh, J. L. (2020). Fabrication of homotypic neural ribbons as a multiplex platform optimized for spinal cord delivery. Scientific Reports, 10(1), 12939. https://doi.org/10.1038/s41598-020-69274-7 Cite
Scientists investigated immunomodulatory potential of human Wharton’s jelly mesenchymal stem cells derived extracellular vesicles on inflammasome activity one week after spinal cord injury in rats.
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Noori, L., Arabzadeh, S., Mohamadi, Y., Mojaverrostami, S., Mokhtari, T., Akbari, M., & Hassanzadeh, G. (2020). Intrathecal administration of the extracellular vesicles derived from human Wharton’s jelly stem cells inhibit inflammation and attenuate the activity of inflammasome complexes after spinal cord injury in rats. Neuroscience Research. https://doi.org/10.1016/j.neures.2020.07.011 Cite
Continue reading “Intrathecal Administration of the Extracellular Vesicles Derived from Human Wharton’s Jelly Stem Cells Inhibit Inflammation and Attenuate the Activity of Inflammasome Complexes after Spinal Cord Injury in Rats”
The authors report the directed self-organization of human induced pluripotent stem cells in a collagen hydrogel towards a highly interconnected neuronal network at a macroscale tissue format.
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Zafeiriou, M.-P., Bao, G., Hudson, J., Halder, R., Blenkle, A., Schreiber, M.-K., Fischer, A., Schild, D., & Zimmermann, W.-H. (2020). Developmental GABA polarity switch and neuronal plasticity in Bioengineered Neuronal Organoids. Nature Communications, 11(1), 3791. https://doi.org/10.1038/s41467-020-17521-w Cite