Abstract
The intricate nature of the human brain and the limitations of existing model systems to study molecular and cellular causes of neuropsychiatric disorders represent a major challenge for basic research. The promising progress in patient-derived stem cell technology and in our knowledge on the role of the brain oxytocin (OXT) system in health and disease offer new possibilities in that direction. In this study, the rat hair follicle stem cells (HFSCs) were isolated and expanded in vitro. The expression of oxytocin receptors (OXTR) was evaluated in these cells. The cellular viability was assessed 12 h post stimulation with OXT. The activation of OXTR-coupled intracellular signaling cascades, following OXT treatment was determined. Also, the influence of OXT on neurite outgrowth and cytoskeletal rearrangement were defined. The assessment of OXTR protein expression revealed this receptor is expressed abundantly in HFSCs. As evidenced by the cell viability assay, no adverse or cytotoxic effects were detected following 12 h treatment with different concentrations of OXT. Moreover, OXTR stimulation by OXT resulted in ERK1/2, CREB, and eEF2 activation, neurite length alterations, and cytoskeletal rearrangements that reveal the functionality of this receptor in HFSCs. Here, we introduced the rat HFSCs as an easy-to-obtain stem cell model that express functional OXTR. This cell-based model can contribute to our understanding of the progression and treatment of neuropsychiatric disorders with oxytocinergic system deficiency.
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Data availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
Abbreviations
- ASD :
-
Autism spectrum disorder
- GAD :
-
Generalized anxiety disorder
- iPSCs :
-
Induced pluripotent stem cells
- HFSCs :
-
Hair follicle-derived stem cells
- OXTR :
-
Oxytocin receptor
- OXT :
-
Oxytocin
- SNP :
-
Single nucleotide polymorphisms
- eEF2a :
-
Eukaryotic elongation factor 2a
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Funding
This study was financially supported by Deutsche Forschungsgemeinschaft (IDN: Ne465/27–1, Ne465/31–1 BJ: JU3039-1), the DFG-GRK 2174 and Iran National Science Foundation (INSF, grant No: 99013300) and Shiraz University of Medical Sciences (Grant No: 27044). Partial support was also provided by International Brain Research Organization (IBRO) Research Fellowship award received by the Mohammad Saied Salehi. The funding body played no role in the design of the study and collection, analysis, and interpretation of data and in writing the manuscript.
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SP, MSS and CPM conceptualized the study, performed experiments, analysed the data, and prepared the manuscript draft. BJ, NA and MD involved in manuscript writing, study design, and reviewed and edited the manuscript. IDN substantially reviewed and edited the manuscript and supervised the study and the manuscript.
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This project entitled “Evaluation of oxytocin effect on hair follicle-derived stem cells” was approved by the Animal Care Committee of Shiraz University of Medical Sciences, Shiraz, Iran (Approval number: IR.SUMS.AEC.1401.111). All eight rats used in this study were euthanized under CO2 inhalation in accordance with Guide for the Care and Use of Laboratory Animals by the National Institutes of Health, Bethesda, MD, USA, and approved by the government of the Oberpfalz, Germany. Hair follicles and cortical tissues were immediately obtained from euthanized animals. No experiment was performed on animals. The study is reported in accordance with ARRIVE guidelines.
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Pandamooz, S., Salehi, M.S., Jurek, B. et al. Oxytocin Receptor Expression in Hair Follicle Stem Cells: A Promising Model for Biological and Therapeutic Discovery in Neuropsychiatric Disorders. Stem Cell Rev and Rep 19, 2510–2524 (2023). https://doi.org/10.1007/s12015-023-10603-4
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DOI: https://doi.org/10.1007/s12015-023-10603-4