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Advances in the Epigenetic Regulation of Stem Cells in Health...
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Advances in the Epigenetic Regulation of Stem Cells in Health and Disease

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

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 2819

Special Issue Editors

Dr. Pasquale Bandiera

E-Mail Website
Guest Editor
Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy
Interests: cell morphology; cell biology; ultrastructure; transmission electron microscopy; scanning electron microscopy; developmental biology
Dr. Sara Cruciani

E-Mail Website
Guest Editor
Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy
Interests: stem cell biology; cell differentiation; cellular mechanisms; cell senescence; stress response; gene and protein expression
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

Stem cells have peculiar properties, such as differentiation and self-renewal, which can be strongly influenced by epigenetic changes and environmental stressors. Molecular biology and cell morphology studies, through fluorescence and electron microscopy methods, have allowed for the highlighting of alterations, at the mitochondrial level, associated with several diseases. Unraveling epigenetic factors and their roles in influencing pluripotency as well as stem cell differentiation capabilities could pave the way for new therapeutic approaches in regenerative medicine. This Special Issue will include a selection of research papers and reviews concerning various aspects of the molecular and epigenetic regulation of stem cell behavior. In addition, clinical studies evaluating epigenetics and stem cells in regenerative medicine are suitable to be submitted to this Special Issue.

Dr. Pasquale Bandiera
Dr. Sara Cruciani
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • stem cells
  • cell differentiation
  • epigenetic mechanism
  • cell morphology
  • regenerative medicine

Published Papers (2 papers)

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Research

15 pages, 2756 KiB  
Article
Epigenetic and Transcriptional Shifts in Human Neural Stem Cells after Reprogramming into Induced Pluripotent Stem Cells and Subsequent Redifferentiation
by Carolin Haubenreich, Michael Lenz, Andreas Schuppert, Michael Peitz, Philipp Koch, Martin Zenke and Oliver Brüstle
Int. J. Mol. Sci. 2024, 25(6), 3214; https://doi.org/10.3390/ijms25063214 - 12 Mar 2024
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Abstract
Induced pluripotent stem cells (iPSCs) and their derivatives have been described to display epigenetic memory of their founder cells, as well as de novo reprogramming-associated alterations. In order to selectively explore changes due to the reprogramming process and not to heterologous somatic memory, [...] Read more.
Induced pluripotent stem cells (iPSCs) and their derivatives have been described to display epigenetic memory of their founder cells, as well as de novo reprogramming-associated alterations. In order to selectively explore changes due to the reprogramming process and not to heterologous somatic memory, we devised a circular reprogramming approach where somatic stem cells are used to generate iPSCs, which are subsequently re-differentiated into their original fate. As somatic founder cells, we employed human embryonic stem cell-derived neural stem cells (NSCs) and compared them to iPSC-derived NSCs derived thereof. Global transcription profiling of this isogenic circular system revealed remarkably similar transcriptomes of both NSC populations, with the exception of 36 transcripts. Amongst these we detected a disproportionately large fraction of X chromosomal genes, all of which were upregulated in iPSC-NSCs. Concurrently, we detected differential methylation of X chromosomal sites spatially coinciding with regions harboring differentially expressed genes. While our data point to a pronounced overall reinstallation of autosomal transcriptomic and methylation signatures when a defined somatic lineage is propagated through pluripotency, they also indicate that X chromosomal genes may partially escape this reinstallation process. Considering the broad application of iPSCs in disease modeling and regenerative approaches, such reprogramming-associated alterations in X chromosomal gene expression and DNA methylation deserve particular attention. Full article
(This article belongs to the Special Issue Advances in the Epigenetic Regulation of Stem Cells in Health and Disease)
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13 pages, 8418 KiB  
Article
Embryonic Stem Cells Can Generate Oral Epithelia under Matrix Instruction
by Ridhima Das, Lisa Harper, Kayoko Kitajima, Tarig Al-Hadi Osman, Mihaela Roxana Cimpan, Anne Chr. Johannssen, Salwa Suliman, Ian C. Mackenzie and Daniela-Elena Costea
Int. J. Mol. Sci. 2023, 24(9), 7694; https://doi.org/10.3390/ijms24097694 - 22 Apr 2023
Cited by 1 | Viewed by 1418
Abstract
We aimed to investigate whether molecular clues from the extracellular matrix (ECM) can induce oral epithelial differentiation of pluripotent stem cells. Mouse embryonic stem cells (ESC) of the feeder-independent cell line E14 were used as a model for pluripotent stem cells. They were [...] Read more.
We aimed to investigate whether molecular clues from the extracellular matrix (ECM) can induce oral epithelial differentiation of pluripotent stem cells. Mouse embryonic stem cells (ESC) of the feeder-independent cell line E14 were used as a model for pluripotent stem cells. They were first grown in 2D on various matrices in media containing vitamin C and without leukemia inhibitory factor (LIF). Matrices investigated were gelatin, laminin, and extracellular matrices (ECM) synthesized by primary normal oral fibroblasts and keratinocytes in culture. Differentiation into epithelial lineages was assessed by light microscopy, immunocytochemistry, and flow cytometry for cytokeratins and stem cell markers. ESC grown in 2D on various matrices were afterwards grown in 3D organotypic cultures with or without oral fibroblasts in the collagen matrix and examined histologically and by immunohistochemistry for epithelial (keratin pairs 1/10 and 4/13 to distinguish epidermal from oral epithelia and keratins 8,18,19 to phenotype simple epithelia) and mesenchymal (vimentin) phenotypes. ECM synthesized by either oral fibroblasts or keratinocytes was able to induce, in 2D cultures, the expression of cytokeratins of the stratified epithelial phenotype. When grown in 3D, all ESC developed into two morphologically distinct cell populations on collagen gels: (i) epithelial-like cells organized in islands with occasional cyst- or duct-like structures and (ii) spindle-shaped cells suggestive of mesenchymal differentiation. The 3D culture on oral fibroblast-populated collagen matrices was necessary for further differentiation into oral epithelia. Only ESC initially grown on 2D keratinocyte or fibroblast-synthesized matrices reached full epithelial maturation. In conclusion, ESC can generate oral epithelia under matrix instruction. Full article
(This article belongs to the Special Issue Advances in the Epigenetic Regulation of Stem Cells in Health and Disease)
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