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The Brain’s Regeneration Potential: The Role of Neural Progenitor Cells in Neuropsychiatric Therapy

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Neurobiology".

Deadline for manuscript submissions: 20 January 2026 | Viewed by 571

Special Issue Editors


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Department of Morphology and Cellular Biology, Universidad de Oviedo, 33006 Oviedo, Spain
Interests: mitochondria; TSPO (the 18-kDa translocator protein); neurodegeneration; neurogenesis; melatonin; stem cells
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Special Issue Information

Dear Colleagues,

Neural stem and progenitor cells play a crucial role in neurogenesis and neuroplasticity, processes that persist significantly even in the adult brain. These multipotent cells have the capacity to proliferate, differentiate into various nervous tissue cell types (neurons and glia), and migrate and mature into a specific adult neuronal type, with neurites and axons allowing the renewal or recovery of cerebral synaptic connections. The main neurogenic niches of the adult brain are found in the dentate gyrus of the hippocampus (the subgranular zone) and in the lateral ventricles (the subventricular zone). The olfactory neuroepithelium harbors neuronal progenitors capable of the continuous proliferation, differentiation, and renewal of olfactory sensory neurons. However, this regenerative capacity can be altered throughout brain aging, as well as being a consequence of various neurodegenerative and neuropsychiatric diseases. For this reason, ongoing research is being conducted with a focus on increasing the brain's regeneration potential, which is particularly important in recovering cognitive and/or motor function, such as after a traumatic brain injury. Moreover, brain regeneration is also particularly important in dealing with neurodegenerative diseases or neuropsychiatric conditions. There are several natural and synthetic compounds, including melatonin and psychoactive drugs such as psilocybin, that may regulate neurogenesis and neuroplasticity by acting on neural stem and progenitor cells at the cellular and molecular levels in order to improve regenerative brain potential, thus offering promising therapeutic strategies in neuropsychiatry. This Special Issue will focus on advances in the field of neural stem and progenitor cells and their therapeutic potential in neurodegenerative and neuropsychiatric conditions. IJMS is a journal of molecular science; therefore, we welcome not only pre-clinical and clinical studies but also biomolecular experimental studies.  

Dr. Beatriz Caballero
Dr. Yaiza Potes
Guest Editors

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Keywords

  • neural stem cells
  • neural progenitor cells
  • neuropsychiatric disorders
  • neurodegeneration
  • neurogenesis
  • neuroplasticity
  • melatonin
  • psychoactive drugs

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Published Papers (1 paper)

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Research

43 pages, 50632 KB  
Article
Immunohistochemical and Ultrastructural Analysis of Adult Neurogenesis Involving Glial and Non-Glial Progenitors in the Cerebellum of Juvenile Chum Salmon Oncorhynchus keta
by Evgeniya V. Pushchina, Mariya E. Bykova, Evgeniya E. Vekhova and Evgeniya A. Pimenova
Int. J. Mol. Sci. 2025, 26(19), 9267; https://doi.org/10.3390/ijms26199267 - 23 Sep 2025
Viewed by 295
Abstract
The ultrastructural organization of different cell types involved in homeostatic growth in the cerebellum of juvenile chum salmon (Oncorhynchus keta) was investigated using transmission and scanning electron microscopy. The organization of astrocytes, oligodendrocytes, dark cells, adult-type glial and non-glial progenitors, stellate [...] Read more.
The ultrastructural organization of different cell types involved in homeostatic growth in the cerebellum of juvenile chum salmon (Oncorhynchus keta) was investigated using transmission and scanning electron microscopy. The organization of astrocytes, oligodendrocytes, dark cells, adult-type glial and non-glial progenitors, stellate neurons, and eurydendroid cells (EDCs) in the molecular and granular layers and granular eminences was characterized. The organization of dendritic bouquets of Purkinje cells and climbing fibers was studied for the first time at the ultrastructural level, and the ultrastructural features of mossy fibers and the rosettes they form were characterized. Scanning electron microscopy (SEM) revealed the presence of single and paired adult-type neural stem/progenitor cells (aNSPCs) on the cerebellar surface and stromal clusters of aNSPCs outside the dorsal matrix zone (DMZ). Immunohistochemical (IHC) verification of proliferating cell nuclear antigen (PCNA) revealed five types of proliferating cells in the cerebellum of juvenile chum salmon: neuroepithelial cells (NECs), glial aNSPCs, and non-glial aNSPCs. A glial fibrillary acidic protein-positive (GFAP) complex consisting of radial glial fibers and aNSPCs was detected in the DMZ. At the same time, a complex of GFAP+ cerebellar afferents, consisting of differentiating mossy and climbing fibers, was found to develop in the cerebellum of juvenile chum salmon. Nestin+ non-glial aNSPCs and small nestin+ resident cells were detected in the dorsal, lateral, and basal areas, as well as in the granular layer (GrL) and granular eminences (GrEm). These cell types may contribute to the homeostatic growth of the cerebellum by acting as both active participants (PCNA+) and resident (silent) aNSPCs. Studying vimentin-positive systems in the cerebellum revealed a widespread presence of proliferating glial aNSPCs that actively contribute to homeostatic growth, as well as small resident immunopositive cells throughout the cerebellum of juvenile chum salmon. Immunolocalization of the neuronal RNA-binding protein marker (HuCD) was detected in numerous molecular layer (ML) cells at the early stages of neuronal differentiation in the dorsal and lateral regions of the cerebellum of juvenile chum salmon. HuCD + EDCs were detected for the first time in the dorsal (DZ) and basal (BZ) zones, forming broad axonal arborization. Immunolabeling of HuCD in combination with transmission electron microscopy (TEM) allowed EDCs to be characterized in the cerebellum of juvenile chum salmon for the first time. Full article
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