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Tong Z, Yin Z. Distribution, contribution and regulation of nestin + cells. J Adv Res 2024; 61:47-63. [PMID: 37648021 PMCID: PMC11258671 DOI: 10.1016/j.jare.2023.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 08/17/2023] [Accepted: 08/21/2023] [Indexed: 09/01/2023] Open
Abstract
BACKGROUND Nestin is an intermediate filament first reported in neuroepithelial stem cells. Nestin expression could be found in a variety of tissues throughout all systems of the body, especially during tissue development and tissue regeneration processes. AIM OF REVIEW This review aimed to summarize and discuss current studies on the distribution, contribution and regulation of nestin+ cells in different systems of the body, to discuss the feasibility ofusing nestin as a marker of multilineage stem/progenitor cells, and better understand the potential roles of nestin+ cells in tissue development, regeneration and pathological processes. KEY SCIENTIFIC CONCEPTS OF REVIEW This review highlights the potential of nestin as a marker of multilineage stem/progenitor cells, and as a key factor in tissue development and tissue regeneration. The article discussed the current findings, limitations, and potential clinical implications or applications of nestin+ cells. Additionally, it included the relationship of nestin+ cells to other cell populations. We propose potential future research directions to encourage further investigation in the field.
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Affiliation(s)
- Ziyang Tong
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Department of Orthopedic Surgery of Sir Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou, China
| | - Zi Yin
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Department of Orthopedic Surgery of Sir Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou, China; China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, China.
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2
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Kalmanson O, Takeda H, Anderson SR, Dondzillo A, Gubbels S. Nestin-expressing cells are mitotically active in the mammalian inner ear. Hear Res 2024; 443:108962. [PMID: 38295585 PMCID: PMC10922748 DOI: 10.1016/j.heares.2024.108962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 01/11/2024] [Accepted: 01/20/2024] [Indexed: 02/02/2024]
Abstract
Nestin expression is associated with pluripotency. Growing evidence suggests nestin is involved in hair cell development. The objective of this study was to investigate the morphology and role of nestin-expressing cells residing in the early postnatal murine inner ear. A lineage-tracing nestin reporter mouse line was used to further characterize these cells. Their cochleae and vestibular organs were immunostained and whole-mounted for cell counting. We found Nestin-expressing cells present in low numbers throughout the inner ear. Three morphotypes were observed: bipolar, unipolar, and globular. Mitotic activity was noted in nestin-expressing cells in the cochlea, utricle, saccule, and crista. Nestin-expressing cell characteristics were then observed after hair cell ablation in two mouse models. First, a reporter model demonstrated nestin expression in a significantly higher proportion of hair cells after hair cell ablation than in control cochleae. However, in a lineage tracing nestin reporter mouse, none of the new hair cells which repopulated the organ of Corti after hair cell ablation expressed nestin, nor did the nestin-expressing cells change in morphotype. In conclusion, Nestin-expressing cells were identified in the cochlea and vestibular organs. After hair cell ablation, nestin-expressing cells did not react to the insult. However, a small number of nestin-expressing cells in all inner ear tissues exhibited mitotic activity, supporting progenitor cell potential, though perhaps not involved in hair cell regeneration.
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Affiliation(s)
- Olivia Kalmanson
- University of Colorado School of Medicine, Dept of Otolaryngology - Head and Neck Surgery, 12631 E 17th Avenue, Aurora, CO 80045, USA.
| | - Hiroki Takeda
- Kumamoto University Graduate School of Medicine, Dept of Otolaryngology - Head and Neck Surgery, Kumamoto University Graduate School of Medicine, Kumamoto City, Japan
| | - Sean R Anderson
- University of Colorado School of Medicine, Dept of Biophysics & Physiology, Aurora, CO 80045, USA
| | - Anna Dondzillo
- University of Colorado School of Medicine, Dept of Otolaryngology - Head and Neck Surgery, 12631 E 17th Avenue, Aurora, CO 80045, USA
| | - Samuel Gubbels
- University of Colorado School of Medicine, Dept of Otolaryngology - Head and Neck Surgery, 12631 E 17th Avenue, Aurora, CO 80045, USA
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3
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Cras A, Larghero J, Rossi E, Blandinières A, Gaussem P, Smadja DM. Nestin is a New Partner in Endothelial Colony Forming Cell Angiogenic Potential. Stem Cell Rev Rep 2023; 19:2541-2550. [PMID: 37452965 DOI: 10.1007/s12015-023-10587-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2023] [Indexed: 07/18/2023]
Abstract
Nestin, an intermediate filament protein expressed by progenitor cells, is associated with tissue regeneration. Although nestin expression has been reported in poorly differentiated and newly formed blood vessels, its role in endothelial cells remains unclear. In this study, we investigated the involvement of nestin in the angiogenic properties of endothelial colony-forming cells (ECFCs) derived from human umbilical cord blood. Our results demonstrate that ECFCs express high levels of nestin, and that its inhibition by small interfering RNAs decreased ECFC proliferation, migration in response to SDF-1 and VEGF-A, tubulogenesis, and adhesion on collagen. These effects are associated with modulation of focal adhesion kinase phosphorylation. Furthermore, nestin silencing resulted in reduced revascularization in a mouse hindlimb ischemia model. In conclusion, these findings provide evidence that nestin more than being a structural protein, is an active player in ECFC angiogenic properties.
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Affiliation(s)
- Audrey Cras
- Université de Paris Cité, INSERM, Innovative Therapies in Hemostasis, F-75006, Paris, France
- Cell therapy unit, AP-HP, Saint Louis Hospital, F-75010, Paris, France
| | - Jérôme Larghero
- Cell therapy unit, AP-HP, Saint Louis Hospital, F-75010, Paris, France
- Université de Paris Cité, INSERM, U976, CIC-BT, F-75010, Paris, France
| | - Elisa Rossi
- Université de Paris Cité, INSERM, Innovative Therapies in Hemostasis, F-75006, Paris, France
| | - Adeline Blandinières
- Université de Paris Cité, INSERM, Innovative Therapies in Hemostasis, F-75006, Paris, France
- Hematology department, AP-HP, Georges Pompidou European Hospital, F-75015, Paris, France
| | - Pascale Gaussem
- Université de Paris Cité, INSERM, Innovative Therapies in Hemostasis, F-75006, Paris, France
- Hematology department, AP-HP, Georges Pompidou European Hospital, F-75015, Paris, France
| | - David M Smadja
- Université de Paris Cité, INSERM, Innovative Therapies in Hemostasis, F-75006, Paris, France.
- Hematology department, AP-HP, Georges Pompidou European Hospital, F-75015, Paris, France.
- Inserm Innovative Therapies in Haemostasis, 56 rue Leblanc, F-75015, Paris, France.
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4
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Doganyigit Z, Eroglu E, Okan A. Intermediate filament proteins are reliable immunohistological biomarkers to help diagnose multiple tissue-specific diseases. Anat Histol Embryol 2023; 52:655-672. [PMID: 37329162 DOI: 10.1111/ahe.12937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 05/18/2023] [Accepted: 05/31/2023] [Indexed: 06/18/2023]
Abstract
Cytoskeletal networks are proteins that effectively maintain cell integrity and provide mechanical support to cells by actively transmitting mechanical signals. Intermediate filaments, which are from the cytoskeleton family and are 10 nanometres in diameter, are unlike actin and microtubules, which are highly dynamic cytoskeletal elements. Intermediate filaments are flexible at low strain, harden at high strain and resist breaking. For this reason, these filaments fulfil structural functions by providing mechanical support to the cells through their different strain-hardening properties. Intermediate filaments are suitable in that cells both cope with mechanical forces and modulate signal transmission. These filaments are composed of fibrous proteins that exhibit a central α-helical rod domain with a conserved substructure. Intermediate filament proteins are divided into six groups. Type I and type II include acidic and basic keratins, type III, vimentin, desmin, peripheralin and glial fibrillary acidic protein (GFAP), respectively. Type IV intermediate filament group includes neurofilament proteins and a fourth neurofilament subunit, α-internexin proteins. Type V consists of lamins located in the nucleus, and the type VI group consists of lens-specific intermediate filaments, CP49/phakinin and filen. Intermediate filament proteins show specific immunoreactivity in differentiating cells and mature cells of various types. Various carcinomas such as colorectal, urothelial and ovarian, diseases such as chronic pancreatitis, cirrhosis, hepatitis and cataract have been associated with intermediate filaments. Accordingly, this section reviews available immunohistochemical antibodies to intermediate filament proteins. Identification of intermediate filament proteins by methodological methods may contribute to the understanding of complex diseases.
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Affiliation(s)
- Zuleyha Doganyigit
- Faculty of Medicine, Histology and Embryology, Yozgat Bozok University, Yozgat, Turkey
| | - Ece Eroglu
- Faculty of Medicine, Yozgat Bozok University, Yozgat, Turkey
| | - Aslı Okan
- Faculty of Medicine, Histology and Embryology, Yozgat Bozok University, Yozgat, Turkey
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Makrygianni EA, Chrousos GP. Neural Progenitor Cells and the Hypothalamus. Cells 2023; 12:1822. [PMID: 37508487 PMCID: PMC10378393 DOI: 10.3390/cells12141822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/22/2023] [Accepted: 06/02/2023] [Indexed: 07/30/2023] Open
Abstract
Neural progenitor cells (NPCs) are multipotent neural stem cells (NSCs) capable of self-renewing and differentiating into neurons, astrocytes and oligodendrocytes. In the postnatal/adult brain, NPCs are primarily located in the subventricular zone (SVZ) of the lateral ventricles (LVs) and subgranular zone (SGZ) of the hippocampal dentate gyrus (DG). There is evidence that NPCs are also present in the postnatal/adult hypothalamus, a highly conserved brain region involved in the regulation of core homeostatic processes, such as feeding, metabolism, reproduction, neuroendocrine integration and autonomic output. In the rodent postnatal/adult hypothalamus, NPCs mainly comprise different subtypes of tanycytes lining the wall of the 3rd ventricle. In the postnatal/adult human hypothalamus, the neurogenic niche is constituted by tanycytes at the floor of the 3rd ventricle, ependymal cells and ribbon cells (showing a gap-and-ribbon organization similar to that in the SVZ), as well as suprachiasmatic cells. We speculate that in the postnatal/adult human hypothalamus, neurogenesis occurs in a highly complex, exquisitely sophisticated neurogenic niche consisting of at least four subniches; this structure has a key role in the regulation of extrahypothalamic neurogenesis, and hypothalamic and extrahypothalamic neural circuits, partly through the release of neurotransmitters, neuropeptides, extracellular vesicles (EVs) and non-coding RNAs (ncRNAs).
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Affiliation(s)
- Evanthia A Makrygianni
- University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - George P Chrousos
- University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
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6
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Arrindell J, Desnues B. Vimentin: from a cytoskeletal protein to a critical modulator of immune response and a target for infection. Front Immunol 2023; 14:1224352. [PMID: 37475865 PMCID: PMC10354447 DOI: 10.3389/fimmu.2023.1224352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 06/20/2023] [Indexed: 07/22/2023] Open
Abstract
Vimentin is an intermediate filament protein that plays a role in cell processes, including cell migration, cell shape and plasticity, or organelle anchorage. However, studies from over the last quarter-century revealed that vimentin can be expressed at the cell surface and even secreted and that its implications in cell physiology largely exceed structural and cytoskeletal functions. Consequently, vimentin contributes to several pathophysiological conditions such as cancer, autoimmune and inflammatory diseases, or infection. In this review, we aimed at covering these various roles and highlighting vimentin implications in the immune response. We also provide an overview of how some microbes including bacteria and viruses have acquired the ability to circumvent vimentin functions in order to interfere with host responses and promote their uptake, persistence, and egress from host cells. Lastly, we discuss the therapeutic approaches associated with vimentin targeting, leading to several beneficial effects such as preventing infection, limiting inflammatory responses, or the progression of cancerous events.
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Affiliation(s)
- Jeffrey Arrindell
- Aix Marseille Univ, Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (AP-HM), Microbes Evolution Phylogeny and Infections (MEPHI), Marseille, France
- Institut Hospitalo-Universitaire (IHU)-Méditerranée Infection, Marseille, France
| | - Benoit Desnues
- Aix Marseille Univ, Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (AP-HM), Microbes Evolution Phylogeny and Infections (MEPHI), Marseille, France
- Institut Hospitalo-Universitaire (IHU)-Méditerranée Infection, Marseille, France
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7
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Kuburich NA, den Hollander P, Pietz JT, Mani SA. Vimentin and cytokeratin: Good alone, bad together. Semin Cancer Biol 2022; 86:816-826. [PMID: 34953942 PMCID: PMC9213573 DOI: 10.1016/j.semcancer.2021.12.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/26/2021] [Accepted: 12/14/2021] [Indexed: 01/27/2023]
Abstract
The cytoskeleton plays an integral role in maintaining the integrity of epithelial cells. Epithelial cells primarily employ cytokeratin in their cytoskeleton, whereas mesenchymal cells use vimentin. During the epithelial-mesenchymal transition (EMT), cytokeratin-positive epithelial cells begin to express vimentin. EMT induces stem cell properties and drives metastasis, chemoresistance, and tumor relapse. Most studies of the functions of cytokeratin and vimentin have relied on the use of either epithelial or mesenchymal cell types. However, it is important to understand how these two cytoskeleton intermediate filaments function when co-expressed in cells undergoing EMT. Here, we discuss the individual and shared functions of cytokeratin and vimentin that coalesce during EMT and how alterations in intermediate filament expression influence carcinoma progression.
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Affiliation(s)
- Nick A Kuburich
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States
| | - Petra den Hollander
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States
| | - Jordan T Pietz
- Department of Creative Services, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States
| | - Sendurai A Mani
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States.
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Duskey JT, Rinaldi A, Ottonelli I, Caraffi R, De Benedictis CA, Sauer AK, Tosi G, Vandelli MA, Ruozi B, Grabrucker AM. Glioblastoma Multiforme Selective Nanomedicines for Improved Anti-Cancer Treatments. Pharmaceutics 2022; 14:pharmaceutics14071450. [PMID: 35890345 PMCID: PMC9325049 DOI: 10.3390/pharmaceutics14071450] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/04/2022] [Accepted: 07/08/2022] [Indexed: 02/01/2023] Open
Abstract
Glioblastoma Multiforme (GBM) is a devastating disease with a low survival rate and few efficacious treatment options. The fast growth, late diagnostics, and off-target toxicity of currently used drugs represent major barriers that need to be overcome to provide a viable cure. Nanomedicines (NMeds) offer a way to overcome these pitfalls by protecting and loading drugs, increasing blood half-life, and being targetable with specific ligands on their surface. In this study, the FDA-approved polymer poly (lactic-co-glycolic) acid was used to optimise NMeds that were surface modified with a series of potential GBM-specific ligands. The NMeds were fully characterised for their physical and chemical properties, and then in vitro testing was performed to evaluate cell uptake and GBM cell specificity. While all targeted NMeds showed improved uptake, only those decorated with the-cell surface vimentin antibody M08 showed specificity for GBM over healthy cells. Finally, the most promising targeted NMed candidate was loaded with the well-known chemotherapeutic, paclitaxel, to confirm targeting and therapeutic effects in C6 GBM cells. These results demonstrate the importance of using well-optimised NMeds targeted with novel ligands to advance delivery and pharmaceutical effects against diseased cells while minimising the risk for nearby healthy cells.
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Affiliation(s)
- Jason Thomas Duskey
- Nanotech Lab, Te.Far.T.I., Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (J.T.D.); (A.R.); (I.O.); (R.C.); (G.T.); (M.A.V.)
| | - Arianna Rinaldi
- Nanotech Lab, Te.Far.T.I., Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (J.T.D.); (A.R.); (I.O.); (R.C.); (G.T.); (M.A.V.)
- Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Ilaria Ottonelli
- Nanotech Lab, Te.Far.T.I., Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (J.T.D.); (A.R.); (I.O.); (R.C.); (G.T.); (M.A.V.)
- Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Riccardo Caraffi
- Nanotech Lab, Te.Far.T.I., Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (J.T.D.); (A.R.); (I.O.); (R.C.); (G.T.); (M.A.V.)
| | | | - Ann Katrin Sauer
- Department of Biological Sciences, University of Limerick, V94 T9PX Limerick, Ireland; (C.A.D.B.); (A.K.S.)
- Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland
- Health Research Institute (HRI), University of Limerick, V94 T9PX Limerick, Ireland
| | - Giovanni Tosi
- Nanotech Lab, Te.Far.T.I., Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (J.T.D.); (A.R.); (I.O.); (R.C.); (G.T.); (M.A.V.)
| | - Maria Angela Vandelli
- Nanotech Lab, Te.Far.T.I., Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (J.T.D.); (A.R.); (I.O.); (R.C.); (G.T.); (M.A.V.)
| | - Barbara Ruozi
- Nanotech Lab, Te.Far.T.I., Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (J.T.D.); (A.R.); (I.O.); (R.C.); (G.T.); (M.A.V.)
- Correspondence: (B.R.); (A.M.G.)
| | - Andreas Martin Grabrucker
- Department of Biological Sciences, University of Limerick, V94 T9PX Limerick, Ireland; (C.A.D.B.); (A.K.S.)
- Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland
- Health Research Institute (HRI), University of Limerick, V94 T9PX Limerick, Ireland
- Correspondence: (B.R.); (A.M.G.)
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Lois-Bermejo I, González-Jiménez P, Duarte S, Pajares MA, Pérez-Sala D. Vimentin Tail Segments Are Differentially Exposed at Distinct Cellular Locations and in Response to Stress. Front Cell Dev Biol 2022; 10:908263. [PMID: 35769261 PMCID: PMC9235546 DOI: 10.3389/fcell.2022.908263] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/17/2022] [Indexed: 01/13/2023] Open
Abstract
The intermediate filament protein vimentin plays a key role in cell signaling and stress sensing, as well as an integrator of cytoskeletal dynamics. The vimentin monomer consists of a central rod-like domain and intrinsically disordered head and tail domains. Although the organization of vimentin oligomers in filaments is beginning to be understood, the precise disposition of the tail region remains to be elucidated. Here we observed that electrophilic stress-induced condensation shielded vimentin from recognition by antibodies against specific segments of the tail domain. A detailed characterization revealed that vimentin tail segments are differentially exposed at distinct subcellular locations, both in basal and stress conditions. The 411–423 segment appeared accessible in all cell areas, correlating with vimentin abundance. In contrast, the 419–438 segment was more scantily recognized in perinuclear vimentin and lipoxidative stress-induced bundles, and better detected in peripheral filaments, where it appeared to protrude further from the filament core. These differences persisted in mitotic cells. Interestingly, both tail segments showed closer accessibility in calyculin A-treated cells and phosphomimetic mutants of the C-terminal region. Our results lead us to hypothesize the presence of at least two distinct arrangements of vimentin tail in cells: an “extended” conformation (accessible 419–438 segment), preferentially detected in peripheral areas with looser filaments, and a “packed” conformation (shielded 419–438 segment), preferentially detected at the cell center in robust filaments and lipoxidative stress-induced bundles. These different arrangements could be putatively interconverted by posttranslational modifications, contributing to the versatility of vimentin functions and/or interactions.
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10
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Hypothalamic remodeling of thyroid hormone signaling during hibernation in the arctic ground squirrel. Commun Biol 2022; 5:492. [PMID: 35606540 PMCID: PMC9126913 DOI: 10.1038/s42003-022-03431-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 04/29/2022] [Indexed: 12/16/2022] Open
Abstract
Hibernation involves prolonged intervals of profound metabolic suppression periodically interrupted by brief arousals to euthermy, the function of which is unknown. Annual cycles in mammals are timed by a photoperiodically-regulated thyroid-hormone-dependent mechanism in hypothalamic tanycytes, driven by thyrotropin (TSH) in the pars tuberalis (PT), which regulates local TH-converting deiodinases and triggers remodeling of neuroendocrine pathways. We demonstrate that over the course of hibernation in continuous darkness, arctic ground squirrels (Urocitellus parryii) up-regulate the retrograde TSH/Deiodinase/TH pathway, remodel hypothalamic tanycytes, and activate the reproductive axis. Forcing the premature termination of hibernation by warming animals induced hypothalamic deiodinase expression and the accumulation of secretory granules in PT thyrotrophs and pituitary gonadotrophs, but did not further activate the reproductive axis. We suggest that periodic arousals may allow for the transient activation of hypothalamic thyroid hormone signaling, cellular remodeling, and re-programming of brain circuits in preparation for the short Arctic summer. Arctic ground squirrels hibernating in darkness activate the pars tuberalis - hypothalamus thyroid hormone signaling pathway, remodel hypothalamic tanycytes, and activate the reproductive axis.
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Intermediate Filaments from Tissue Integrity to Single Molecule Mechanics. Cells 2021; 10:cells10081905. [PMID: 34440673 PMCID: PMC8392029 DOI: 10.3390/cells10081905] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 07/20/2021] [Accepted: 07/22/2021] [Indexed: 12/22/2022] Open
Abstract
Cytoplasmic intermediate filaments (IFs), which together with actin and microtubules form the cytoskeleton, are composed of a large and diverse family of proteins. Efforts to elucidate the molecular mechanisms responsible for IF-associated diseases increasingly point towards a major contribution of IFs to the cell’s ability to adapt, resist and respond to mechanical challenges. From these observations, which echo the impressive resilience of IFs in vitro, we here discuss the role of IFs as master integrators of cell and tissue mechanics. In this review, we summarize our current understanding of the contribution of IFs to cell and tissue mechanics and explain these results in light of recent in vitro studies that have investigated physical properties of single IFs and IF networks. Finally, we highlight how changes in IF gene expression, network assembly dynamics, and post-translational modifications can tune IF properties to adapt cell and tissue mechanics to changing environments.
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12
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Yoshimura H, Moriya M, Yoshida A, Yamamoto M, Machida Y, Ochiai K, Michishita M, Nakagawa T, Matsuda Y, Takahashi K, Kamiya S, Ishiwata T. Involvement of Nestin in the Progression of Canine Mammary Carcinoma. Vet Pathol 2021; 58:994-1003. [PMID: 34056976 DOI: 10.1177/03009858211018656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Nestin, a class VI intermediate filament protein, is known to be expressed in various types of human neoplasms, including breast cancer, and is associated with their progression. However, its expression and role in canine mammary tumors remain unknown. We analyzed nestin expression in canine mammary tumors using in situ hybridization and immunohistochemistry. We also investigated its role in a canine mammary carcinoma cell line using RNA interference. Nestin expression was not observed in luminal epithelial cells of any of the 62 cases of benign mammary lesions examined, although myoepithelial cells showed its expression in most cases. In 16/50 (32%) primary mammary carcinomas and 6/15 (40%) metastases of mammary carcinomas, cytoplasmic nestin expression was detected in luminal epithelial cells. In luminal cells of primary mammary carcinomas, its expression was positively related to several pathological parameters that indicate high-grade malignancy, including histological grading (P < .01), vascular/lymphatic invasion (P < .01), Ki-67 index (P < .01), and metastasis (P < .05). Immunohistochemistry revealed that nestin expression was related to vimentin expression in mammary carcinomas (P < .01). This relationship was confirmed using reverse transcription-quantitative polymerase chain reaction using 9 cell lines derived from canine mammary carcinoma (P < .01). Finally, nestin knockdown in canine mammary carcinoma cells using small interfering RNA inhibited cell proliferation and migration based on WST-8, Boyden chamber, and cell-tracking assays. These findings suggest that nestin may at least partially mediate these behaviors of canine mammary carcinoma cells.
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Affiliation(s)
| | - Maiko Moriya
- 12989Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Ayaka Yoshida
- 12989Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Masami Yamamoto
- 12989Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Yukino Machida
- 12989Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Kazuhiko Ochiai
- 12989Nippon Veterinary and Life Science University, Tokyo, Japan
| | | | | | | | | | - Shinji Kamiya
- 12989Nippon Veterinary and Life Science University, Tokyo, Japan
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Li Y, Zhang LN, Chong L, Liu Y, Xi FY, Zhang H, Duan XL. Prenatal ethanol exposure impairs the formation of radial glial fibers and promotes the transformation of GFAPδ‑positive radial glial cells into astrocytes. Mol Med Rep 2021; 23:274. [PMID: 33576465 PMCID: PMC7893684 DOI: 10.3892/mmr.2021.11913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 01/12/2021] [Indexed: 12/19/2022] Open
Abstract
During embryonic cortical development, radial glial cells (RGCs) are the major source of neurons, and these also serve as a supportive scaffold to guide neuronal migration. Similar to Vimentin, glial fibrillary acidic protein (GFAP) is one of the major intermediate filament proteins present in glial cells. Previous studies confirmed that prenatal ethanol exposure (PEE) significantly affected the levels of GFAP and increased the disassembly of radial glial fibers. GFAPδ is a variant of GFAP that is specifically expressed in RGCs; however, to the best of our knowledge, there are no reports regarding how PEE influences its expression during cortical development. In the present study, the effects of PEE on the expression and distribution of GFAPδ during early cortical development were assessed. It was found that PEE significantly decreased the expression levels of GFAP and GFAPδ. Using double immunostaining, GFAPδ was identified to be specifically expressed in apical and basal RGCs, and was co‑localized with other intermediate filament proteins, such as GFAP, Nestin and Vimentin. Additionally, PEE significantly affected the morphology of radial glial fibers and altered the behavior of RGCs. The loss of GFAPδ accelerated the transformation of RGCs into astrocytes. Using co‑immunostaining with Ki67 or phospho‑histone H3, GFAPδ+ cells were observed to be proliferative or mitotic cells, and ethanol treatment significantly decreased the proliferative or mitotic activities of GFAPδ+ RGCs. Taken together, the results suggested that PEE altered the expression patterns of GFAPδ and impaired the development of radial glial fibers and RGC behavior. The results of the present study provided evidence that GFAPδ may be a promising target to rescue the damage induced by PEE.
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Affiliation(s)
- Yu Li
- Department of Infectious Diseases, Shaanxi Provincial People's Hospital and The Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710068, P.R. China
- Shaanxi Center for Models of Clinical Medicine in International Cooperation of Science and Technology, Shaanxi Provincial People's Hospital and The Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710068, P.R. China
| | - Li-Na Zhang
- The Third Department of Neurology, Shaanxi Provincial People's Hospital and The Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710068, P.R. China
| | - Li Chong
- The Third Department of Neurology, Shaanxi Provincial People's Hospital and The Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710068, P.R. China
| | - Yue Liu
- The Third Department of Neurology, Shaanxi Provincial People's Hospital and The Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710068, P.R. China
| | - Feng-Yu Xi
- Department of Clinical Laboratory, Shaanxi Provincial People's Hospital and The Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710068, P.R. China
| | - Hong Zhang
- Department of Infectious Diseases, Shaanxi Provincial People's Hospital and The Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710068, P.R. China
| | - Xiang-Long Duan
- Shaanxi Center for Models of Clinical Medicine in International Cooperation of Science and Technology, Shaanxi Provincial People's Hospital and The Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710068, P.R. China
- The Second Department of General Surgery, Shaanxi Provincial People's Hospital and The Third Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710068, P.R. China
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14
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Cibelli A, Veronica Lopez-Quintero S, Mccutcheon S, Scemes E, Spray DC, Stout RF, Suadicani SO, Thi MM, Urban-Maldonado M. Generation and Characterization of Immortalized Mouse Cortical Astrocytes From Wildtype and Connexin43 Knockout Mice. Front Cell Neurosci 2021; 15:647109. [PMID: 33790744 PMCID: PMC8005635 DOI: 10.3389/fncel.2021.647109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/18/2021] [Indexed: 11/17/2022] Open
Abstract
We transduced mouse cortical astrocytes cultured from four litters of embryonic wildtype (WT) and connexin43 (Cx43) null mouse pups with lentiviral vector encoding hTERT and measured expression of astrocyte-specific markers up to passage 10 (p10). The immortalized cell lines thus generated (designated IWCA and IKOCA, respectively) expressed biomarkers consistent with those of neonatal astrocytes, including Cx43 from wildtype but not from Cx43-null mice, lack of Cx30, and presence of Cx26. AQP4, the water channel that is found in high abundance in astrocyte end-feet, was expressed at moderately high levels in early passages, and its mRNA and protein declined to low but still detectable levels by p10. The mRNA levels of the astrocyte biomarkers aldehyde dehydrogenase 1L1 (ALDH1L1), glutamine synthetase (GS) and glial fibrillary acidic protein (GFAP) remained relatively constant during successive passages. GS protein expression was maintained while GFAP declined with cell passaging but was still detectable at p10. Both mRNA and protein levels of glutamate transporter 1 (GLT-1) declined with passage number. Immunostaining at corresponding times was consistent with the data from Western blots and provided evidence that these proteins were expressed at appropriate intracellular locations. Consistent with our goal of generating immortalized cell lines in which Cx43 was either functionally expressed or absent, IWCA cells were found to be well coupled with respect to intercellular dye transfer and similar to primary astrocyte cultures in terms of time course of junction formation, electrical coupling strength and voltage sensitivity. Moreover, barrier function was enhanced in co-culture of the IWCA cell line with bEnd.3 microvascular endothelial cells. In addition, immunostaining revealed oblate endogenous Cx43 gap junction plaques in IWCA that were similar in appearance to those plaques obtained following transfection of IKOCA cells with fluorescent protein tagged Cx43. Re-expression of Cx43 in IKOCA cells allows experimental manipulation of connexins and live imaging of interactions between connexins and other proteins. We conclude that properties of these cell lines resemble those of primary cultured astrocytes, and they may provide useful tools in functional studies by facilitating genetic and pharmacological manipulations in the context of an astrocyte-appropriate cellular environment.
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Affiliation(s)
- Antonio Cibelli
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, New York, NY, United States
| | | | - Sean Mccutcheon
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, New York, NY, United States
| | - Eliana Scemes
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, New York, NY, United States
| | - David C. Spray
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, New York, NY, United States,Department of Medicine (Cardiology), Albert Einstein College of Medicine, New York, NY, United States,*Correspondence: David C. Spray,
| | - Randy F. Stout
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, New York, NY, United States,Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, New York, NY, United States,Randy J. Stout Jr.,
| | - Sylvia O. Suadicani
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, New York, NY, United States,Department of Urology, Albert Einstein College of Medicine, New York, NY, United States,Department of Molecular Pharmacology, Albert Einstein College of Medicine, New York, NY, United States
| | - Mia M. Thi
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, New York, NY, United States,Department of Molecular Pharmacology, Albert Einstein College of Medicine, New York, NY, United States,Department of Orthopaedic Surgery, Albert Einstein College of Medicine, New York, NY, United States
| | - Marcia Urban-Maldonado
- Department of Urology, Albert Einstein College of Medicine, New York, NY, United States,Department of Orthopaedic Surgery, Albert Einstein College of Medicine, New York, NY, United States
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15
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Patteson AE, Carroll RJ, Iwamoto DV, Janmey PA. The vimentin cytoskeleton: when polymer physics meets cell biology. Phys Biol 2020; 18:011001. [PMID: 32992303 PMCID: PMC8240483 DOI: 10.1088/1478-3975/abbcc2] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The proper functions of tissues depend on the ability of cells to withstand stress and maintain shape. Central to this process is the cytoskeleton, comprised of three polymeric networks: F-actin, microtubules, and intermediate filaments (IFs). IF proteins are among the most abundant cytoskeletal proteins in cells; yet they remain some of the least understood. Their structure and function deviate from those of their cytoskeletal partners, F-actin and microtubules. IF networks show a unique combination of extensibility, flexibility and toughness that confers mechanical resilience to the cell. Vimentin is an IF protein expressed in mesenchymal cells. This review highlights exciting new results on the physical biology of vimentin intermediate filaments and their role in allowing whole cells and tissues to cope with stress.
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Affiliation(s)
- Alison E Patteson
- Physics Department, Syracuse University, Syracuse, NY 13244, USA
- BioInspired Institute, Syracuse University, Syracuse, NY 13244, USA
| | - Robert J Carroll
- Physics Department, Syracuse University, Syracuse, NY 13244, USA
- BioInspired Institute, Syracuse University, Syracuse, NY 13244, USA
| | - Daniel V Iwamoto
- Institute for Medicine and Engineering, Department of Physiology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Paul A Janmey
- Institute for Medicine and Engineering, Department of Physiology, University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
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16
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Bozic I, Savic D, Lavrnja I. Astrocyte phenotypes: Emphasis on potential markers in neuroinflammation. Histol Histopathol 2020; 36:267-290. [PMID: 33226087 DOI: 10.14670/hh-18-284] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Astrocytes, the most abundant glial cells in the central nervous system (CNS), have numerous integral roles in all CNS functions. They are essential for synaptic transmission and support neurons by providing metabolic substrates, secreting growth factors and regulating extracellular concentrations of ions and neurotransmitters. Astrocytes respond to CNS insults through reactive astrogliosis, in which they go through many functional and molecular changes. In neuroinflammatory conditions reactive astrocytes exert both beneficial and detrimental functions, depending on the context and heterogeneity of astrocytic populations. In this review we profile astrocytic diversity in the context of neuroinflammation; with a specific focus on multiple sclerosis (MS) and its best-described animal model experimental autoimmune encephalomyelitis (EAE). We characterize two main subtypes, protoplasmic and fibrous astrocytes and describe the role of intermediate filaments in the physiology and pathology of these cells. Additionally, we outline a variety of markers that are emerging as important in investigating astrocytic biology in both physiological conditions and neuroinflammation.
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Affiliation(s)
- Iva Bozic
- Institute for Biological Research "Sinisa Stankovic", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Danijela Savic
- Institute for Biological Research "Sinisa Stankovic", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Irena Lavrnja
- Institute for Biological Research "Sinisa Stankovic", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia.
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17
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Liu Y, Xiao F, Hu X, Tang Z, Fu Z, Liang X, Zeng G, Zeng W, Liao Y, Ren Y, Liu Z, Peng H, Mei Q, Liu M. Recovery and maintenance of NESTIN expression in umbilical cord-MSC using a novel culture medium. AMB Express 2020; 10:132. [PMID: 32725504 PMCID: PMC7387401 DOI: 10.1186/s13568-020-01067-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 07/18/2020] [Indexed: 12/24/2022] Open
Abstract
Mesenchymal stem cells (MSC) are a popular candidate in cellular therapy for many diseases. MSCs are well known by their feature of self-renewal and their differentiation potential. NESTIN is a cytoskeletal protein expressed in MSC that functions directly in cell proliferation and differentiation. Here, we demonstrated that adding UltraGRO, a medium supplement, could maintain and partially recover the expression of NESTIN in human umbilical cord derived MSCs (UC-MSCs). Furthermore, the UC-MSCs cultured with UltraGRO showed a better immunomodulation ability in a colitis mouse model compared with those cultured in other types of media. This indicates that the use of novel culture medium benefits the maintenance of NESTIN expression and NESTIN may be one of the vital factors that regulates the performance of MSCs.
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18
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Type III intermediate filaments as targets and effectors of electrophiles and oxidants. Redox Biol 2020; 36:101582. [PMID: 32711378 PMCID: PMC7381704 DOI: 10.1016/j.redox.2020.101582] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 05/05/2020] [Accepted: 05/13/2020] [Indexed: 12/20/2022] Open
Abstract
Intermediate filaments (IFs) play key roles in cell mechanics, signaling and homeostasis. Their assembly and dynamics are finely regulated by posttranslational modifications. The type III IFs, vimentin, desmin, peripherin and glial fibrillary acidic protein (GFAP), are targets for diverse modifications by oxidants and electrophiles, for which their conserved cysteine residue emerges as a hot spot. Pathophysiological examples of these modifications include lipoxidation in cell senescence and rheumatoid arthritis, disulfide formation in cataracts and nitrosation in endothelial shear stress, although some oxidative modifications can also be detected under basal conditions. We previously proposed that cysteine residues of vimentin and GFAP act as sensors for oxidative and electrophilic stress, and as hinges influencing filament assembly. Accumulating evidence indicates that the structurally diverse cysteine modifications, either per se or in combination with other posttranslational modifications, elicit specific functional outcomes inducing distinct assemblies or network rearrangements, including filament stabilization, bundling or fragmentation. Cysteine-deficient mutants are protected from these alterations but show compromised cellular performance in network assembly and expansion, organelle positioning and aggresome formation, revealing the importance of this residue. Therefore, the high susceptibility to modification of the conserved cysteine of type III IFs and its cornerstone position in filament architecture sustains their role in redox sensing and integration of cellular responses. This has deep pathophysiological implications and supports the potential of this residue as a drug target. Type III intermediate filaments can be modified by many oxidants and electrophiles. Oxidative modifications of type III IFs occur in normal and pathological conditions. The conserved cysteine residue acts as a hub for redox/electrophilic modifications. Cysteine modifications elicit structure-dependent type III IF rearrangements. Type III intermediate filaments act as sensors for oxidative and electrophilic stress.
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19
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Potokar M, Morita M, Wiche G, Jorgačevski J. The Diversity of Intermediate Filaments in Astrocytes. Cells 2020; 9:E1604. [PMID: 32630739 PMCID: PMC7408014 DOI: 10.3390/cells9071604] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/26/2020] [Accepted: 07/01/2020] [Indexed: 01/02/2023] Open
Abstract
Despite the remarkable complexity of the individual neuron and of neuronal circuits, it has been clear for quite a while that, in order to understand the functioning of the brain, the contribution of other cell types in the brain have to be accounted for. Among glial cells, astrocytes have multiple roles in orchestrating neuronal functions. Their communication with neurons by exchanging signaling molecules and removing molecules from extracellular space takes place at several levels and is governed by different cellular processes, supported by multiple cellular structures, including the cytoskeleton. Intermediate filaments in astrocytes are emerging as important integrators of cellular processes. Astrocytes express five types of intermediate filaments: glial fibrillary acidic protein (GFAP); vimentin; nestin; synemin; lamins. Variability, interactions with different cellular structures and the particular roles of individual intermediate filaments in astrocytes have been studied extensively in the case of GFAP and vimentin, but far less attention has been given to nestin, synemin and lamins. Similarly, the interplay between different types of cytoskeleton and the interaction between the cytoskeleton and membranous structures, which is mediated by cytolinker proteins, are understudied in astrocytes. The present review summarizes the basic properties of astrocytic intermediate filaments and of other cytoskeletal macromolecules, such as cytolinker proteins, and describes the current knowledge of their roles in normal physiological and pathological conditions.
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Affiliation(s)
- Maja Potokar
- Laboratory of Neuroendocrinology – Molecular Cell Physiology, Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia;
- Celica BIOMEDICAL, 1000 Ljubljana, Slovenia;
| | - Mitsuhiro Morita
- Department of Biology, Kobe University Graduate School of Science, Kobe 657-8501, Japan;
| | - Gerhard Wiche
- Celica BIOMEDICAL, 1000 Ljubljana, Slovenia;
- Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories, University of Vienna, 1030 Vienna, Austria
| | - Jernej Jorgačevski
- Laboratory of Neuroendocrinology – Molecular Cell Physiology, Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia;
- Celica BIOMEDICAL, 1000 Ljubljana, Slovenia;
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20
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Grasso R, Pellitteri R, Caravella SA, Musumeci F, Raciti G, Scordino A, Sposito G, Triglia A, Campisi A. Dynamic changes in cytoskeleton proteins of olfactory ensheathing cells induced by radiofrequency electromagnetic fields. J Exp Biol 2020; 223:jeb217190. [PMID: 32041804 DOI: 10.1242/jeb.217190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 02/02/2020] [Indexed: 01/13/2023]
Abstract
Several evidences have suggested the ability of radiofrequency electromagnetic fields to influence biological systems, even if the action mechanisms are not well understood. There are few data on the effect of radiofrequency electromagnetic fields on self-renewal of neural progenitor cells. A particular glial type that shows characteristics of stem cells is olfactory ensheathing cells (OECs). Herein, we assessed the non-thermal effects induced on OECs through radiofrequency electromagnetic fields changing the envelope of the electromagnetic wave. Primary OEC cultures were exposed to continuous or amplitude-modulated 900 MHz electromagnetic fields, in the far-field condition and at different exposure times (10, 15, 20 min). The expression of OEC markers (S-100 and nestin), cytoskeletal proteins (GFAP and vimentin), apoptotic pathway activation by caspase-3 cleavage and cell viability were evaluated. Our results highlight that 20 min of exposure to continuous or amplitude-modulated 900 MHz electromagnetic fields induced a different and significant decrease in cell viability. In addition, according to the electromagnetic field waveform, diverse dynamic changes in the expression of the analysed markers in OECs and activation of the apoptotic pathway were observed. The data suggest that radiofrequency electromagnetic fields might play different and important roles in the self-renewal of OEC stem cells, which are involved in nervous system repair.
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Affiliation(s)
- Rosaria Grasso
- Department of Physics and Astronomy 'Ettore Majorana', University of Catania, 95123 Catania, Italy
- Laboratori Nazionali del Sud, National Institute for Nuclear Physics, 95123 Catania, Italy
| | - Rosalia Pellitteri
- Institute for Biomedical Research and Innovation, Italian National Research Council, 95126 Catania, Italy
| | | | - Francesco Musumeci
- Department of Physics and Astronomy 'Ettore Majorana', University of Catania, 95123 Catania, Italy
- Laboratori Nazionali del Sud, National Institute for Nuclear Physics, 95123 Catania, Italy
| | - Giuseppina Raciti
- Department of Drug Sciences, Section of Biochemistry, University of Catania, 95125 Catania, Italy
| | - Agata Scordino
- Department of Physics and Astronomy 'Ettore Majorana', University of Catania, 95123 Catania, Italy
- Laboratori Nazionali del Sud, National Institute for Nuclear Physics, 95123 Catania, Italy
| | - Giovanni Sposito
- Department of Drug Sciences, Section of Biochemistry, University of Catania, 95125 Catania, Italy
| | - Antonio Triglia
- Department of Physics and Astronomy 'Ettore Majorana', University of Catania, 95123 Catania, Italy
| | - Agata Campisi
- Department of Drug Sciences, Section of Biochemistry, University of Catania, 95125 Catania, Italy
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21
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Bott CJ, Winckler B. Intermediate filaments in developing neurons: Beyond structure. Cytoskeleton (Hoboken) 2020; 77:110-128. [PMID: 31970897 DOI: 10.1002/cm.21597] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/06/2020] [Accepted: 01/08/2020] [Indexed: 12/20/2022]
Abstract
Neuronal development relies on a highly choreographed progression of dynamic cellular processes by which newborn neurons migrate, extend axons and dendrites, innervate their targets, and make functional synapses. Many of these dynamic processes require coordinated changes in morphology, powered by the cell's cytoskeleton. Intermediate filaments (IFs) are the third major cytoskeletal elements in vertebrate cells, but are rarely considered when it comes to understanding axon and dendrite growth, pathfinding and synapse formation. In this review, we first introduce the many new and exciting concepts of IF function, discovered mostly in non-neuronal cells. These roles include dynamic rearrangements, crosstalk with microtubules and actin filaments, mechano-sensing and -transduction, and regulation of signaling cascades. We then discuss the understudied roles of neuronally expressed IFs, with a particular focus on IFs expressed during development, such as nestin, vimentin and α-internexin. Lastly, we illustrate how signaling modulation by the unconventional IF nestin shapes neuronal morphogenesis in unexpected and novel ways. Even though the first IF knockout mice were made over 20 years ago, the study of the cell biological functions of IFs in the brain still has much room for exciting new discoveries.
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Affiliation(s)
- Christopher J Bott
- Department of Cell Biology, University of Virginia, Charlottesville, Virginia
| | - Bettina Winckler
- Department of Cell Biology, University of Virginia, Charlottesville, Virginia
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22
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Quantitative SUMO proteomics identifies PIAS1 substrates involved in cell migration and motility. Nat Commun 2020; 11:834. [PMID: 32047143 PMCID: PMC7012886 DOI: 10.1038/s41467-020-14581-w] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 01/07/2020] [Indexed: 01/09/2023] Open
Abstract
The protein inhibitor of activated STAT1 (PIAS1) is an E3 SUMO ligase that plays important roles in various cellular pathways. Increasing evidence shows that PIAS1 is overexpressed in various human malignancies, including prostate and lung cancers. Here we used quantitative SUMO proteomics to identify potential substrates of PIAS1 in a system-wide manner. We identified 983 SUMO sites on 544 proteins, of which 62 proteins were assigned as putative PIAS1 substrates. In particular, vimentin (VIM), a type III intermediate filament protein involved in cytoskeleton organization and cell motility, was SUMOylated by PIAS1 at Lys-439 and Lys-445 residues. VIM SUMOylation was necessary for its dynamic disassembly and cells expressing a non-SUMOylatable VIM mutant showed a reduced level of migration. Our approach not only enables the identification of E3 SUMO ligase substrates but also yields valuable biological insights into the unsuspected role of PIAS1 and VIM SUMOylation on cell motility. PIAS1 is an E3 SUMO ligase involved in various cellular processes. Here, the authors use quantitative proteomics to identify potential PIAS1 substrates in human cells and elucidate the biological consequences of PIAS1-mediated SUMOylation of vimentin.
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23
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Serres MP, Samwer M, Truong Quang BA, Lavoie G, Perera U, Görlich D, Charras G, Petronczki M, Roux PP, Paluch EK. F-Actin Interactome Reveals Vimentin as a Key Regulator of Actin Organization and Cell Mechanics in Mitosis. Dev Cell 2020; 52:210-222.e7. [PMID: 31928973 PMCID: PMC6983945 DOI: 10.1016/j.devcel.2019.12.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 09/23/2019] [Accepted: 12/12/2019] [Indexed: 01/27/2023]
Abstract
Most metazoan cells entering mitosis undergo characteristic rounding, which is important for accurate spindle positioning and chromosome separation. Rounding is driven by contractile tension generated by myosin motors in the sub-membranous actin cortex. Recent studies highlight that alongside myosin activity, cortical actin organization is a key regulator of cortex tension. Yet, how mitotic actin organization is controlled remains poorly understood. To address this, we characterized the F-actin interactome in spread interphase and round mitotic cells. Using super-resolution microscopy, we then screened for regulators of cortex architecture and identified the intermediate filament vimentin and the actin-vimentin linker plectin as unexpected candidates. We found that vimentin is recruited to the mitotic cortex in a plectin-dependent manner. We then showed that cortical vimentin controls actin network organization and mechanics in mitosis and is required for successful cell division in confinement. Together, our study highlights crucial interactions between cytoskeletal networks during cell division. Comparison of the F-actin interactome in spread interphase and round mitotic cells Proteomics identifies vimentin and plectin as key regulators of the mitotic cortex Vimentin intermediate filaments localize under the actin cortex in mitosis Sub-cortical vimentin regulates actin cortex organization and mechanics in mitosis
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Affiliation(s)
- Murielle P Serres
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK; Cancer Research UK London Research Institute, Clare Hall Laboratories, South Mimms, Hertfordshire, EN6 3LD, UK
| | - Matthias Samwer
- Department of Cellular Logistics, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Binh An Truong Quang
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
| | - Geneviève Lavoie
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal QC, H3T 1J4, Canada
| | - Upamali Perera
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
| | - Dirk Görlich
- Department of Cellular Logistics, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Guillaume Charras
- London Centre for Nanotechnology, University College London, London WC1H 0AH, UK; Department of Cell and Developmental Biology, University College London, London WC1E 6BT, UK
| | - Mark Petronczki
- Cancer Research UK London Research Institute, Clare Hall Laboratories, South Mimms, Hertfordshire, EN6 3LD, UK
| | - Philippe P Roux
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal QC, H3T 1J4, Canada; Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montreal, QC, H3T 1J4, Canada.
| | - Ewa K Paluch
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK.
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24
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Singh KN, Ramadas MN, Veeran V, Naidu MR, Dhanaraj TS, Chandrasekaran K. Expression Pattern of the Cancer Stem Cell Marker "Nestin" in Leukoplakia and Oral Squamous Cell Carcinoma. Rambam Maimonides Med J 2019; 10:RMMJ.10378. [PMID: 31675305 PMCID: PMC6824828 DOI: 10.5041/rmmj.10378] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE The aim of the present study was to determine and compare the expression pattern and localization of nestin, in an attempt to explore its role in oral carcinogenesis. METHODS Western blot and immunohistochemistry analysis were performed to study the expression pattern of nestin in normal mucosa, leukoplakia, and oral squamous cell carcinoma samples. Nestin expression was evaluated in the keratinocytes and blood vessels of all the samples and compared with various clinico-pathological parameters. RESULTS Nestin expression was increased in samples of leukoplakia and oral squamous cell carcinoma when compared with normal mucosa. Among leukoplakia samples, the expression was increased in cases without dysplasia compared to cases with dysplastic features. In cases of oral squamous cell carcinoma, the expression of nestin was found to be decreased with the loss of differentiation. Neoangiogenesis status determined by nestin expression showed an increasing expression from normal mucosa through leukoplakia, to oral squamous cell carcinoma. CONCLUSION This study has two major findings: (1) identification of nestin as an effective indicator of neoangiogenesis, and (2) nestin may be used as a marker in predicting the early changes in oral carcinogenesis.
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Fukui M, Katayama S, Ikeya Y, Inazu T. Yokukansan, a Kampo medicine, enhances the level of neuronal lineage markers in differentiated P19 embryonic carcinoma cells. Heliyon 2019; 5:e02662. [PMID: 31692643 PMCID: PMC6806406 DOI: 10.1016/j.heliyon.2019.e02662] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 09/11/2019] [Accepted: 10/11/2019] [Indexed: 02/01/2023] Open
Abstract
Yokukansan (YKS), a traditional Japanese Kampo medicine, affects neurological and psychiatric disorders. It ameliorates hippocampal neurogenesis in animals. However, its effect on neuronal cell differentiation remains unclear. Therefore, we investigated the effects of YKS on pluripotent P19 embryonic carcinoma cells as neuronal differentiation model cells. Western blotting and immunocytochemistry revealed that 10 μg/mL YKS treatment during embryoid body formation or neuronal differentiation increased the expression of the neuronal stem cell marker, Nestin, by 1.9-fold and 1.7-fold, respectively, and of the mature neuron marker, NeuN, by 1.5-fold and 1.4-fold, respectively. We examined the effect of YKS on intracellular signaling pathways in P19 cells and found significant elevation in phospho-PDK1 and phospho-mTOR expression (1.1-fold and 1.2-fold, respectively). Therefore, we investigated the effect of PDK1 and mTOR inhibitors on the level of neuronal lineage markers. We found that the mTOR inhibitor significantly abolished the YKS effect on the level of neuronal lineage markers. Moreover, to identify the target(s) of YKS, antibody array analysis that simultaneously detects 16 phosphorylated proteins was performed. YKS significantly upregulated 10 phosphorylated proteins including PDK1, Akt, AMPK, PRAS40, mTOR, p70 S6 kinase, GSK-3α, Bad and ERK1/2 under cell proliferation conditions. These results suggest that YKS simultaneously activates multiple signaling pathways. Thus, we concluded that YKS enhances the level of neuronal lineage markers in differentiated P19 cells, however it does not induce neuronal differentiation. Furthermore, mTOR is the predominant mediator of the YKS effect on these cells.
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Affiliation(s)
- Makoto Fukui
- Department of Pharmacy, College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Syouichi Katayama
- Department of Pharmacy, College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Yukinobu Ikeya
- Center for Supporting Pharmaceutical Education, Daiichi University of Pharmacy, Minami, Fukuoka, 815-8511, Japan
| | - Tetsuya Inazu
- Department of Pharmacy, College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
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Duarte S, Viedma-Poyatos Á, Navarro-Carrasco E, Martínez AE, Pajares MA, Pérez-Sala D. Vimentin filaments interact with the actin cortex in mitosis allowing normal cell division. Nat Commun 2019; 10:4200. [PMID: 31519880 PMCID: PMC6744490 DOI: 10.1038/s41467-019-12029-4] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 08/09/2019] [Indexed: 01/27/2023] Open
Abstract
The vimentin network displays remarkable plasticity to support basic cellular functions and reorganizes during cell division. Here, we show that in several cell types vimentin filaments redistribute to the cell cortex during mitosis, forming a robust framework interwoven with cortical actin and affecting its organization. Importantly, the intrinsically disordered tail domain of vimentin is essential for this redistribution, which allows normal mitotic progression. A tailless vimentin mutant forms curly bundles, which remain entangled with dividing chromosomes leading to mitotic catastrophes or asymmetric partitions. Serial deletions of vimentin tail domain gradually impair cortical association and mitosis progression. Disruption of f-actin, but not of microtubules, causes vimentin bundling near the chromosomes. Pathophysiological stimuli, including HIV-protease and lipoxidation, induce similar alterations. Interestingly, full filament formation is dispensable for cortical association, which also occurs in vimentin particles. These results unveil implications of vimentin dynamics in cell division through its interplay with the actin cortex. The intermediate filament vimentin reorganizes during mitosis, but its molecular regulation and impact on the cell during cell division is unclear. Here, the authors show that vimentin filaments redistribute to the cell cortex during mitosis intertwining with and affecting actin organization.
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Affiliation(s)
- Sofia Duarte
- Department of Structural and Chemical Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Álvaro Viedma-Poyatos
- Department of Structural and Chemical Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Elena Navarro-Carrasco
- Department of Structural and Chemical Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Alma E Martínez
- Department of Structural and Chemical Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - María A Pajares
- Department of Structural and Chemical Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Dolores Pérez-Sala
- Department of Structural and Chemical Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, 28040, Madrid, Spain.
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Volonté YA, Vallese-Maurizi H, Dibo MJ, Ayala-Peña VB, Garelli A, Zanetti SR, Turpaud A, Craft CM, Rotstein NP, Politi LE, German OL. A Defective Crosstalk Between Neurons and Müller Glial Cells in the rd1 Retina Impairs the Regenerative Potential of Glial Stem Cells. Front Cell Neurosci 2019; 13:334. [PMID: 31402853 PMCID: PMC6670004 DOI: 10.3389/fncel.2019.00334] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 07/08/2019] [Indexed: 01/02/2023] Open
Abstract
Müller glial cells (MGC) are stem cells in the retina. Although their regenerative capacity is very low in mammals, the use of MGC as stem cells to regenerate photoreceptors (PHRs) during retina degenerations, such as in retinitis pigmentosa, is being intensely studied. Changes affecting PHRs in diseased retinas have been thoroughly investigated; however, whether MGC are also affected is still unclear. We here investigated whether MGC in retinal degeneration 1 (rd1) mouse, an animal model of retinitis pigmentosa, have impaired stem cell properties or structure. rd1 MGC showed an altered morphology, both in culture and in the whole retina. Using mixed neuron-glial cultures obtained from newborn mice retinas, we determined that proliferation was significantly lower in rd1 than in wild type (wt) MGC. Levels of stem cell markers, such as Nestin and Sox2, were also markedly reduced in rd1 MGC compared to wt MGC in neuron-glial cultures and in retina cryosections, even before the onset of PHR degeneration. We then investigated whether neuron-glial crosstalk was involved in these changes. Noteworthy, Nestin expression was restored in rd1 MGC in co-culture with wt neurons. Conversely, Nestin expression decreased in wt MGC in co-culture with rd1 neurons, as occurred in rd1 MGC in rd1 neuron-glial mixed cultures. These results imply that MGC proliferation and stem cell markers are reduced in rd1 retinas and might be restored by their interaction with “healthy” PHRs, suggesting that alterations in rd1 PHRs lead to a disruption in neuron-glial crosstalk affecting the regenerative potential of MGC.
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Affiliation(s)
- Yanel A Volonté
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur - National Research Council of Argentina (CONICET), Bahía Blanca, Argentina
| | - Harmonie Vallese-Maurizi
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur - National Research Council of Argentina (CONICET), Bahía Blanca, Argentina
| | - Marcos J Dibo
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur - National Research Council of Argentina (CONICET), Bahía Blanca, Argentina
| | - Victoria B Ayala-Peña
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur - National Research Council of Argentina (CONICET), Bahía Blanca, Argentina
| | - Andrés Garelli
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur - National Research Council of Argentina (CONICET), Bahía Blanca, Argentina
| | - Samanta R Zanetti
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur - National Research Council of Argentina (CONICET), Bahía Blanca, Argentina
| | - Axel Turpaud
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur - National Research Council of Argentina (CONICET), Bahía Blanca, Argentina
| | - Cheryl Mae Craft
- Department of Ophthalmology, USC Roski Eye Institute, Keck School of Medicine of the University of Southern California, Los Angeles, CA, United States.,Department of Integrative Anatomical Sciences, Keck School of Medicine of the University of Southern California, Los Angeles, CA, United States
| | - Nora P Rotstein
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur - National Research Council of Argentina (CONICET), Bahía Blanca, Argentina
| | - Luis E Politi
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur - National Research Council of Argentina (CONICET), Bahía Blanca, Argentina
| | - Olga L German
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur - National Research Council of Argentina (CONICET), Bahía Blanca, Argentina
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Mónico A, Duarte S, Pajares MA, Pérez-Sala D. Vimentin disruption by lipoxidation and electrophiles: Role of the cysteine residue and filament dynamics. Redox Biol 2019; 23:101098. [PMID: 30658903 PMCID: PMC6859561 DOI: 10.1016/j.redox.2019.101098] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 12/28/2018] [Accepted: 01/05/2019] [Indexed: 12/17/2022] Open
Abstract
The intermediate filament protein vimentin constitutes a critical sensor for electrophilic and oxidative stress, which induce extensive reorganization of the vimentin cytoskeletal network. Here, we have investigated the mechanisms underlying these effects. In vitro, electrophilic lipids, including 15-deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2) and 4-hydroxynonenal (HNE), directly bind to vimentin, whereas the oxidant diamide induces disulfide bond formation. Mutation of the single vimentin cysteine residue (Cys328) blunts disulfide formation and reduces lipoxidation by 15d-PGJ2, but not HNE. Preincubation with these agents differentially hinders NaCl-induced filament formation by wild-type vimentin, with effects ranging from delayed elongation and increased filament diameter to severe impairment of assembly or aggregation. Conversely, the morphology of vimentin Cys328Ser filaments is mildly or not affected. Interestingly, preformed vimentin filaments are more resistant to electrophile-induced disruption, although chemical modification is not diminished, showing that vimentin (lip)oxidation prior to assembly is more deleterious. In cells, electrophiles, particularly diamide, induce a fast and drastic disruption of existing filaments, which requires the presence of Cys328. As the cellular vimentin network is under continuous remodeling, we hypothesized that vimentin exchange on filaments would be necessary for diamide-induced disruption. We confirmed that strategies reducing vimentin dynamics, as monitored by FRAP, including cysteine crosslinking and ATP synthesis inhibition, prevent diamide effect. In turn, phosphorylation may promote vimentin disassembly. Indeed, treatment with the phosphatase inhibitor calyculin A to prevent dephosphorylation intensifies electrophile-induced wild-type vimentin filament disruption. However, whereas a phosphorylation-deficient vimentin mutant is only partially protected from disorganization, Cys328Ser vimentin is virtually resistant, even in the presence of calyculin A. Together, these results indicate that modification of Cys328 and vimentin exchange are critical for electrophile-induced network disruption.
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Affiliation(s)
- Andreia Mónico
- Department of Structural and Chemical Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Sofia Duarte
- Department of Structural and Chemical Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - María A Pajares
- Department of Structural and Chemical Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; Molecular Hepatology Group, Instituto de Investigación Sanitaria del Hospital Universitario La Paz (IdiPAZ), Paseo de la Castellana 261, 28046 Madrid, Spain
| | - Dolores Pérez-Sala
- Department of Structural and Chemical Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain.
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Matsuda Y, Tanaka M, Sawabe M, Mori S, Muramatsu M, Mieno MN, Ishiwata T, Arai T. The stem cell-specific intermediate filament nestin missense variation p.A1199P is associated with pancreatic cancer. Oncol Lett 2019; 17:4647-4654. [PMID: 30988821 DOI: 10.3892/ol.2019.10106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 02/21/2019] [Indexed: 11/06/2022] Open
Abstract
The intermediate filament nestin is upregulated in stem/progenitor cells and cancers, and regulates cell proliferation, migration, invasion and stemness. The present study comparatively analyzed serial autopsies of Japanese patients (n=2,206; males, 1,225; females, 981; median, 80.7 years old; range, 33-104 years old) with malignant tumors of whole organs, with respect to the clinical information, and 5 single nucleotide polymorphisms of the nestin gene. p.A1199P associated with pancreatic cancer (odds ratio, 4.4; 95% confidence interval, 1.9-10.0, P=0.001) while it did not associate with malignant neoplasms in other organs. p.A1199P did not associate with precancerous lesions of the pancreas. Single nucleotide polymorphisms of nestin were not associated with sex, drinking, smoking, or body weight. In conclusion, the amino acid 1,199 of nestin is localized in the tail structure of the filament and polymerizes with other intermediate filament proteins. The present results suggest that missense variations of nestin affect pancreatic carcinogenesis in Japanese patients.
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Affiliation(s)
- Yoko Matsuda
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Tokyo 173-0015, Japan
| | - Masashi Tanaka
- Department of Genomics for Longevity and Health, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka 567-0085, Japan
| | - Motoji Sawabe
- Department of Molecular Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
| | - Seijiro Mori
- Center for Promotion of Clinical Investigation, Tokyo Metropolitan Geriatric Hospital, Tokyo 173-0015, Japan
| | - Masaaki Muramatsu
- Department of Molecular Epidemiology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
| | - Makiko Naka Mieno
- Department of Medical Informatics, Center for Information, Jichi Medical University, Tochigi 329-0498, Japan
| | - Toshiyuki Ishiwata
- Research Team for Geriatric Pathology, Tokyo Metropolitan Institute of Gerontology, Tokyo 173-0015, Japan
| | - Tomio Arai
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Tokyo 173-0015, Japan
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Sánchez-Maldonado B, Galicia MDL, Rojo C, González-Gil A, Flor-García M, Picazo RA. Spheroids Spontaneously Generated In Vitro from Sheep Ovarian Cortical Cells Contain Integrating Cells That Exhibit Hallmarks of Neural Stem/Progenitor Cells. Stem Cells Dev 2018; 27:1557-1576. [PMID: 30251912 DOI: 10.1089/scd.2017.0141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Cell spheroids are inducible or spontaneously generated cell aggregates produced in vitro that can provide a valuable model for developmental biology, stem cell biology, and cancer therapy research. This investigation aimed to define the cellular identity of spheroids spontaneously generated in vitro from sheep ovarian cortical cells cultured under specific serum-free conditions. Spheroids were characterized during 21 days of culture by morphometric evaluation, detection of alkaline phosphatase (AP) activity, gene expression analyses of stemness transcription factors and several lineage markers, immunolocalization analyses, as well as assessment of self-renewal and differentiation potential. Cell aggregation, evidenced from day 3 of culture onward, resulted in efficient generation of 65-75 spheroids for every 500,000 cells seeded. The spheroids reached maximum diameter (187 ± 15.9 μm) during the second week of culture and exhibited AP activity. Sox2, Oct4, and Nanog were expressed throughout the culture period, with upregulation of Sox2. Neural lineage specification genes (eg, nestin, vimentin, Pax6, and p75NTR) were expressed from day 10 onward at levels above that of Oct4, Nanog and those for endoderm [alpha-fetoprotein (AFP)], and mesoderm (brachyury) specification. Neural stem cell (NSC)/neural progenitor cell (NPC) markers, nestin, Pax6, p75NTR, and vimentin, were extensively localized in cells on day 10, 15 (44.75% ± 5.84%; 93.54% ± 1.35%; 78.90% ± 4.80%; 73.82% ± 3.40%, respectively), and 21 (49.98% ± 5.30%; 91.84% ± 1.9%; 76.74% ± 11.0%; 95.80% ± 3.60%, respectively). Spheroid cell self-renewal was evidenced by cell proliferation and the generation of new spheroids during two consecutive expansion periods. Culture of spheroid cells under differentiation conditions gave rise to cells showing immunolocalization of the neuron-specific antigen NeuN and the astroglial antigen GFAP (glial fibrillary acidic protein). Our results indicate that spheroids spontaneously generated in this culture system were comprised of cells with molecular characteristics of NSC/NPC that can self-renew and differentiate into neurons and glia, supporting the identity of spheroids as neurospheres.
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Affiliation(s)
- Belén Sánchez-Maldonado
- 1 Departamento de Medicina y Cirugía, Facultad de Veterinaria, Universidad Complutense de Madrid , Madrid, España
| | - María de Lourdes Galicia
- 2 Sección Departamental de Fisiología, Facultad de Veterinaria, Universidad Complutense de Madrid , Madrid, España
| | - Concepción Rojo
- 3 Sección Departamental de Anatomía y Embriología, Facultad de Veterinaria, Universidad Complutense de Madrid , Madrid, España
| | - Alfredo González-Gil
- 2 Sección Departamental de Fisiología, Facultad de Veterinaria, Universidad Complutense de Madrid , Madrid, España
| | - Miguel Flor-García
- 4 Departamento de Neuropatología Molecular, Centro de Biología Molecular "Severo Ochoa" (CBMSO), CSIC-UAM , Madrid, España.,5 Departamento de Biología Molecular, Facultad de Ciencias, Universidad Autónoma de Madrid , Madrid, España
| | - Rosa A Picazo
- 2 Sección Departamental de Fisiología, Facultad de Veterinaria, Universidad Complutense de Madrid , Madrid, España
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Lee H, Lee HJ, Jung JH, Shin EA, Kim SH. Melatonin disturbs SUMOylation-mediated crosstalk between c-Myc and nestin via MT1 activation and promotes the sensitivity of paclitaxel in brain cancer stem cells. J Pineal Res 2018; 65:e12496. [PMID: 29654697 DOI: 10.1111/jpi.12496] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 04/03/2018] [Indexed: 02/06/2023]
Abstract
Here the underlying antitumor mechanism of melatonin and its potency as a sensitizer of paclitaxel was investigated in X02 cancer stem cells. Melatonin suppressed sphere formation and induced G2/M arrest in X02 cells expressing nestin, CD133, CXCR4, and SOX-2 as biomarkers of stemness. Furthermore, melatonin reduced the expression of CDK2, CDK4, cyclin D1, cyclin E, and c-Myc and upregulated cyclin B1 in X02 cells. Notably, genes of c-Myc related mRNAs were differentially expressed in melatonin-treated X02 cells by microarray analysis. Consistently, melatonin reduced the expression of c-Myc at mRNA and protein levels, which was blocked by MG132. Of note, overexpression of c-Myc increased the expression of nestin, while overexpression of nestin enhanced c-Myc through crosstalk despite different locations, nucleus, and cytoplasm. Interestingly, melatonin attenuated small ubiquitin-related modifier-1 (SUMO-1) more than SUMO-2 or SUMO-3 and disturbed nuclear translocation of nestin for direct binding to c-Myc by SUMOylation of SUMO-1 protein by immunofluorescence and immunoprecipitation. Also, melatonin reduced trimethylated histone H3K4me3 and H3K36me3 more than dimethylation in X02 cells by Western blotting and chromatin immunoprecipitation assay. Notably, melatonin upregulated MT1, not MT2, in X02 cells and melatonin receptor inhibitor luzindole blocked the ability of melatonin to decrease the expression of nestin, p-c-Myc(S62), and c-Myc. Furthermore, melatonin promoted cytotoxicity, sub-G1 accumulation, and apoptotic body formation by Paclitaxcel in X02 cells. Taken together, these findings suggest that melatonin inhibits stemness via suppression of c-Myc, nestin, and histone methylation via MT1 activation and promotes anticancer effect of Paclitaxcel in brain cancer stem cells.
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Affiliation(s)
- Hyemin Lee
- College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Hyo-Jung Lee
- College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Ji Hoon Jung
- College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Eun Ah Shin
- College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Sung-Hoon Kim
- College of Korean Medicine, Kyung Hee University, Seoul, Korea
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Giakoumettis D, Kritis A, Foroglou N. C6 cell line: the gold standard in glioma research. Hippokratia 2018; 22:105-112. [PMID: 31641331 PMCID: PMC6801124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
BACKGROUND Glioblastoma multiforme is the most aggressive brain tumor with poor prognosis and an average survival of 1-2 years. Animal models that simulate the features of human glioma are the key to newer agents or therapeutic strategies. In order to establish such models, the C6 glioma cell line has been mostly used in neuro-oncology research. METHODS In this narrative review, we systematically reviewed the international literature in order to retrieve and present the most important biological and molecular features of C6 cell line. RESULTS Even though many cell lines have been developed, each cell line presents with slight differences from human glioma behavior. C6 cancer cell line is a rat glioma cell line, which can simulate in overall the high growth rate, the high vascularization, and the highly infiltrative character of glioblastoma multiforme. CONCLUSIONS Most of the C6 glioma research has been focused on testing a wide diversity of agents for their tumoricidal activity. C6 cell line is considered to be a safe and popular glioma model in the literature, providing a good simulation of glioblastoma multiforme. HIPPOKRATIA 2018, 22(3): 105-112.
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Affiliation(s)
- D Giakoumettis
- First Department of Neurosurgery, University of Athens Medical School, "Evangelismos" General Hospital, Athens
- First Department of Neurosurgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - A Kritis
- Laboratory of Physiology, Faculty of Medicine, School of Health Sciences
- cGMP Regenerative Medicine facility, Department of Physiology and Pharmacology, Faculty of Medicine, School of Health Sciences
| | - N Foroglou
- First Department of Neurosurgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Nowak A, Dziegiel P. Implications of nestin in breast cancer pathogenesis (Review). Int J Oncol 2018; 53:477-487. [PMID: 29901100 DOI: 10.3892/ijo.2018.4441] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 05/14/2018] [Indexed: 11/06/2022] Open
Abstract
The aim of the present review was to summarize the current knowledge of the involvement of nestin in breast cancer (BC) pathogenesis. Nestin is a member of the class VI family of intermediate filament proteins, originally identified as a marker of neural stem cells and subsequently demonstrated to be expressed in BC and other cancer types. In normal breast tissue, nestin is expressed in the basal/myoepithelial cells of the mammary gland. In BC, nestin identifies basal-like tumours and predicts aggressive behaviour and poor prognosis. Nestin expression has also been detected in BC stem cells and newly-formed tumour vessels, being a factor in promoting invasion and metastasis. The present review provides an up-to-date overview of the involvement of nestin in processes facilitating BC pathogenesis and progression.
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Affiliation(s)
- Aleksandra Nowak
- Department of Human Morphology and Embryology, Division of Histology and Embryology, Wroclaw Medical University, 50-368 Wroclaw, Poland
| | - Piotr Dziegiel
- Department of Human Morphology and Embryology, Division of Histology and Embryology, Wroclaw Medical University, 50-368 Wroclaw, Poland
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Bernal A, Arranz L. Nestin-expressing progenitor cells: function, identity and therapeutic implications. Cell Mol Life Sci 2018; 75:2177-2195. [PMID: 29541793 PMCID: PMC5948302 DOI: 10.1007/s00018-018-2794-z] [Citation(s) in RCA: 215] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 02/28/2018] [Accepted: 03/07/2018] [Indexed: 02/06/2023]
Abstract
The neuroepithelial stem cell protein, or Nestin, is a cytoskeletal intermediate filament initially characterized in neural stem cells. However, current extensive evidence obtained in in vivo models and humans shows presence of Nestin+ cells with progenitor and/or regulatory functions in a number of additional tissues, remarkably bone marrow. This review presents the current knowledge on the role of Nestin in essential stem cell functions, including self-renewal/proliferation, differentiation and migration, in the context of the cytoskeleton. We further discuss the available in vivo models for the study of Nestin+ cells and their progeny, their function and elusive nature in nervous system and bone marrow, and their potential mechanistic role and promising therapeutic value in preclinical models of disease. Future improved in vivo models and detection methods will allow to determine the true essence of Nestin+ cells and confirm their potential application as therapeutic target in a range of diseases.
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Affiliation(s)
- Aurora Bernal
- Stem Cell Aging and Cancer Research Group, Department of Medical Biology, Faculty of Health Sciences, UiT, The Arctic University of Norway, MH Building Level 6, 9019, Tromsø, Norway
| | - Lorena Arranz
- Stem Cell Aging and Cancer Research Group, Department of Medical Biology, Faculty of Health Sciences, UiT, The Arctic University of Norway, MH Building Level 6, 9019, Tromsø, Norway.
- Department of Hematology, University Hospital of North Norway, Tromsø, Norway.
- Young Associate Investigator, Norwegian Center for Molecular Medicine (NCMM), Oslo, Norway.
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35
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Laminin β2 Chain Regulates Retinal Progenitor Cell Mitotic Spindle Orientation via Dystroglycan. J Neurosci 2018; 38:5996-6010. [PMID: 29853630 DOI: 10.1523/jneurosci.0551-18.2018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/10/2018] [Accepted: 05/18/2018] [Indexed: 01/27/2023] Open
Abstract
Vertebrate retinal development follows a pattern during which retinal progenitor cells (RPCs) give rise to all retinal cell types in a highly conserved temporal sequence. RPC proliferation and cell cycle exit are tightly coordinated to ensure proper and timely production of each of the retinal cell types. Extracellular matrix (ECM) plays an important role in eye development, influencing RPC proliferation and differentiation. In this study, we demonstrate that laminins, key ECM components, in the inner limiting membrane, control mitotic spindle orientation by providing environmental cues to the RPCs. In vivo deletion of laminin β2 in mice of both sexes results in a loss RPC basal processes and contact with the ECM, leading to a shift of the mitotic spindle pole orientation toward asymmetric cell divisions. This leads to decreased proliferation and premature RPC pool depletion, resulting in overproduction of rod photoreceptors at the expense of bipolar cells and Müller glia. Moreover, we show that deletion of laminin β2 leads to disruption and mislocalization of its receptors: dystroglycan and β1-integrin. Addition of exogenous β2-containing laminins to laminin β2-deficient retinal explants stabilizes the RPC basal processes and directs their mitotic spindle orientation toward symmetric divisions, leading to increased RPC proliferation, as well as restores proper receptor localization at the retinal surface. Finally, functional blocking of dystroglycan in wild-type retinal explants phenocopies laminin β2 ablation. Our data suggest that dystroglycan-mediated signaling between RPCs and the ECM is of key importance in controlling critical developmental events during retinogenesis.SIGNIFICANCE STATEMENT The mechanisms governing retinogenesis are subject to both intrinsic and extrinsic signaling cues. Although the role of intrinsic signaling has been the subject of many studies, our understanding of the role of the microenvironment in retinal development remains unclear. Using a combination of in vivo and ex vivo approaches, we demonstrate that laminins, key extracellular matrix components, provide signaling cues that control retinal progenitor cell attachment to the basement membrane, mitotic axis, proliferation, and fate adoption. Moreover, we identify, for the first time, dystroglycan as the receptor responsible for directing retinal progenitor cell mitotic spindle orientation. Our data suggest a mechanism where dystroglycan-mediated signaling between the cell and the extracellular matrix controls the proliferative potential of progenitors in the developing CNS.
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Motor Improvement of Skilled Forelimb Use Induced by Treatment with Growth Hormone and Rehabilitation Is Dependent on the Onset of the Treatment after Cortical Ablation. Neural Plast 2018; 2018:6125901. [PMID: 29755514 PMCID: PMC5883990 DOI: 10.1155/2018/6125901] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 12/20/2017] [Accepted: 01/08/2018] [Indexed: 01/04/2023] Open
Abstract
We previously demonstrated that the administration of GH immediately after severe motor cortex injury, in rats, followed by rehabilitation, improved the functionality of the affected limb and reexpressed nestin in the contralateral motor cortex. Here, we analyze whether these GH effects depend on a time window after the injury and on the reexpression of nestin and actin. Injured animals were treated with GH (0.15 mg/kg/day) or vehicle, at days 7, 14, and 35 after cortical ablation. Rehabilitation was applied at short and long term (LTR) after the lesion and then sacrificed. Nestin and actin were analyzed by immunoblotting in the contralateral motor cortex. Giving GH at days 7 or 35 after the lesion, but not 14 days after it, led to a remarkable improvement in the functionality of the affected paw. Contralateral nestin and actin reexpression was clearly higher in GH-treated animals, probably because compensatory brain plasticity was established. GH and immediate rehabilitation are key for repairing brain injuries, with the exception of a critical time period: GH treatment starting 14 days after the lesion. Our data also indicate that there is not a clear plateau in the recovery from a brain injury in agreement with our data in human patients.
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Hendrickson ML, Zutshi I, Wield A, Kalil RE. Nestin expression and in vivo proliferative potential of tanycytes and ependymal cells lining the walls of the third ventricle in the adult rat brain. Eur J Neurosci 2018; 47:284-293. [PMID: 29359828 DOI: 10.1111/ejn.13834] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 12/10/2017] [Accepted: 12/19/2017] [Indexed: 12/13/2022]
Abstract
There is a disagreement in the literature concerning the degree of proliferation of cells in the walls of the third ventricle (3rdV) under normal conditions in the adult mammalian brain. To address this issue, we mapped the cells expressing the neural stem/progenitor cell marker nestin along the entire rostrocaudal extent of the 3rdV in adult male rats and observed a complex distribution. Abundant nestin was present in tanycyte cell bodies and processes and also was observed in patches of ependymal cells as well as in isolated ependymal cells throughout the walls of the 3rdV. However, we observed very limited ependymal cell or tanycyte proliferation in normal adult rats as determined by bromodeoxyuridine (BrdU) incorporation or the expression of Ki-67. Moreover, fewer than 13% of the cells that were BrdU-positive (BrdU+) or Ki-67-positive (Ki-67+) expressed nestin. These observations stand in contrast to those made in the subventricular zone of the lateral ventricle (SVZ) and subgranular zone of the hippocampal formation (SGZ), where cell proliferation measured by BrdU incorporation or Ki-67 expression is observed frequently in cells that also express nestin. Thus, while ependymal cell or tanycyte cell proliferation can be promoted by the addition of mitogens, dietary modifications or other in vivo manipulations, the proliferation of ependymal cells and tanycytes in the walls of the 3rdV is very limited in the normal adult male rat brain.
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Affiliation(s)
- Michael L Hendrickson
- School of Medicine and Public Health, University of Wisconsin-Madison, 1300 University Avenue, Madison, WI, USA
| | - Ipshita Zutshi
- Graduate Program in Biological Sciences, University of California, San Diego, La Jolla, CA, USA
| | - Alyssa Wield
- Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
| | - Ronald E Kalil
- School of Medicine and Public Health, University of Wisconsin-Madison, 1300 University Avenue, Madison, WI, USA
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Chen J, Guan L, Zhu H, Xiong S, Zeng L, Jiang H. Transplantation of mouse-induced pluripotent stem cells into the cochlea for the treatment of sensorineural hearing loss. Acta Otolaryngol 2017. [PMID: 28643534 DOI: 10.1080/00016489.2017.1342045] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
CONCLUSION Mouse-induced pluripotent stem cells (iPSCs) could differentiate into hair cell-like cells and spiral ganglion-like cells after transplantation into mouse cochleae, but it cannot improve the auditory brain response (ABR) thresholds in short term. OBJECTIVE To evaluate the potential of iPSCs for use as a source of transplants for the treatment of sensorineural hearing loss (SNHL). METHODS Establishing SNHL mice model, then injecting the iPSCs or equal volume DMEM basic medium into the cochleae, respectively. Immunofluorescence staining and reverse transcription-polymerase chain reaction (RT-PCR) were used to assess the survival, migration, differentiation of the transplanted iPSCs in cochleae and then recorded the ABR threshold in different time. Hematoxylin-eosin (HE) staining was used to observe the teratoma formation. RESULTS Four weeks after transplantation, CM-Di1-labeled iPSCs could be found in the modiolus and Rosenthal's canal (RC), and some of them could expressed auditory hair cell markers or spiral ganglion neuron makers in group A, but not found in group B and C. As to the ABR threshold, no significance differences were found between pre- with postoperative in group A or B. In our study, no teratoma was observed in the cochleae.
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Affiliation(s)
- Jing Chen
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Lina Guan
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hengtao Zhu
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Shan Xiong
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Liang Zeng
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hongqun Jiang
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Nanchang University, Nanchang, China
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Qiao YY, Chu P. Expression of nestin in embryonic tissues and its effects on clinicopathological characteristics of patients with placenta previa. J Cell Biochem 2017; 119:2061-2072. [PMID: 28833496 DOI: 10.1002/jcb.26368] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 08/17/2017] [Indexed: 01/19/2023]
Abstract
In this study, we examined expression of nestin in the spinal cord, lung, kidney, stomach, colon, and intestine tissues at different stages of embryos in patients with placenta previa. Fetuses of 75 patients with placenta previa were assigned to case group and 80 fetuses from healthy pregnant women with normal placenta who voluntarily terminated pregnancy to control group. Clinical data of pregnant women were collected at the time of admission. Blood from elbow vein was collected to determine expression of serum nestin. Tissues from spinal cord, lung, kidney, stomach, colon, and intestine in 3-7 months fetuses of the two groups were extracted. Expression of nestin in tissues was detected by immunohistochemistry, Western blotting and RT-qPCR. The mRNA expression of nestin in the case group was increased. Nestin expression was correlated with the gestational age, age of foetus, and type of placenta previa in patients with placenta previa. Positive nestin expression was detected in the spinal cord, lung, kidney, stomach, intestine, and colon tissues in normal and placenta previa embryo at Stage I. The positive cell density and nestin expression decreased at Stage II, and further decreased at Stage III. The case group had higher nestin mRNA and protein levels throughout human fetal development. Findings of this study suggested that, nestin, as a specific marker of neural precursor cells, was expressed in various tissues of the embryo in patients with placenta previa and nestin expression was lower with increased maturation of the embryo.
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Affiliation(s)
- Yan-Yan Qiao
- Department of Obstetrics and Gynecology, School of Clinical Medicine, Jining Medical University, Jining, China
| | - Ping Chu
- Department of Obstetrics and Gynecology, Jining No.1 People's Hospital, Jining, China
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Krüger K, Wik E, Knutsvik G, Nalwoga H, Klingen TA, Arnes JB, Chen Y, Mannelqvist M, Dimitrakopoulou K, Stefansson IM, Birkeland E, Aas T, Tobin NP, Jonassen I, Bergh J, Foulkes WD, Akslen LA. Expression of Nestin associates with BRCA1 mutations, a basal-like phenotype and aggressive breast cancer. Sci Rep 2017; 7:1089. [PMID: 28439082 PMCID: PMC5430803 DOI: 10.1038/s41598-017-00862-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/15/2017] [Indexed: 12/28/2022] Open
Abstract
We here examined whether Nestin, by protein and mRNA levels, could be a predictor of BRCA1 related breast cancer, a basal-like phenotype, and aggressive tumours. Immunohistochemical staining of Nestin was done in independent breast cancer hospital cohorts (Series I-V, total 1257 cases). Also, TCGA proteomic data (n = 103), mRNA microarray data from TCGA (n = 520), METABRIC (n = 1992), and 6 open access breast cancer datasets (n = 1908) were analysed. Patients with Nestin protein expression in tumour cells more often had BRCA1 germline mutations (OR 8.7, p < 0.0005, Series III), especially among younger patients (<40 years at diagnosis) (OR 16.5, p = 0.003). Nestin protein positivity, observed in 9–28% of our hospital cases (Series I-IV), was independently associated with reduced breast cancer specific survival (HR = 2.0, p = 0.035) and was consistently related to basal-like differentiation (by Cytokeratin 5, OR 8.7–13.8, p < 0.0005; P-cadherin OR 7.0–8.9, p < 0.0005; EGFR staining, OR 3.7–8.2, p ≤ 0.05). Nestin mRNA correlated significantly with Nestin protein expression (ρ = 0.6, p < 0.0005), and high levels were seen in the basal-like intrinsic subtype. Gene expression signalling pathways linked to high Nestin were explored, and revealed associations with stem-like tumour features. In summary, Nestin was strongly associated with germline BRCA1 related breast cancer, a basal-like phenotype, reduced survival, and stemness characteristics.
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Affiliation(s)
- Kristi Krüger
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen, Bergen, Norway
| | - Elisabeth Wik
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen, Bergen, Norway.,Department of Pathology, Haukeland University Hospital, Bergen, Norway
| | - Gøril Knutsvik
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen, Bergen, Norway.,Department of Pathology, Haukeland University Hospital, Bergen, Norway
| | - Hawa Nalwoga
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen, Bergen, Norway.,Department of Pathology, Makerere University College of Health Sciences, P. O. Box 7072, Kampala, Uganda
| | - Tor A Klingen
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen, Bergen, Norway.,Department of Pathology, Vestfold Hospital, Tønsberg, Norway
| | - Jarle B Arnes
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen, Bergen, Norway.,Department of Pathology, Haukeland University Hospital, Bergen, Norway
| | - Ying Chen
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen, Bergen, Norway.,Department of Pathology, Vestfold Hospital, Tønsberg, Norway.,Department of Pathology, Akershus University Hospital, Lørenskog, Norway
| | - Monica Mannelqvist
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen, Bergen, Norway
| | - Konstantina Dimitrakopoulou
- Centre for Cancer Biomarkers CCBIO and Computational Biology Unit, Department of Informatics, University of, Bergen, Norway
| | - Ingunn M Stefansson
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen, Bergen, Norway.,Department of Pathology, Haukeland University Hospital, Bergen, Norway
| | - Even Birkeland
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen, Bergen, Norway
| | - Turid Aas
- Department of Surgery, Haukeland University Hospital, Bergen, Norway
| | - Nicholas P Tobin
- Department of Oncology and Pathology, Karolinska Institute and University Hospital, Stockholm, Sweden
| | - Inge Jonassen
- Centre for Cancer Biomarkers CCBIO and Computational Biology Unit, Department of Informatics, University of, Bergen, Norway
| | - Jonas Bergh
- Department of Oncology and Pathology, Karolinska Institute and University Hospital, Stockholm, Sweden
| | - William D Foulkes
- Program in Cancer Genetics, Departments of Oncology and Human Genetics, McGill University, 546 Pine Avenue West, Montreal, QC, H2W 1S6, Canada
| | - Lars A Akslen
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, Section for Pathology, University of Bergen, Bergen, Norway. .,Department of Pathology, Haukeland University Hospital, Bergen, Norway.
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Yang J, Wu C, Stefanescu I, Horowitz A. Analysis of Retinoic Acid-induced Neural Differentiation of Mouse Embryonic Stem Cells in Two and Three-dimensional Embryoid Bodies. J Vis Exp 2017. [PMID: 28518115 DOI: 10.3791/55621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Mouse embryonic stem cells (ESCs) isolated from the inner mass of the blastocyst (typically at day E3.5), can be used as in vitro model system for studying early embryonic development. In the absence of leukemia inhibitory factor (LIF), ESCs differentiate by default into neural precursor cells. They can be amassed into a three dimensional (3D) spherical aggregate termed embryoid body (EB) due to its similarity to the early stage embryo. EBs can be seeded on fibronectin-coated coverslips, where they expand by growing two dimensional (2D) extensions, or implanted in 3D collagen matrices where they continue growing as spheroids, and differentiate into the three germ layers: endodermal, mesodermal, and ectodermal. The 3D collagen culture mimics the in vivo environment more closely than the 2D EBs. The 2D EB culture facilitates analysis by immunofluorescence and immunoblotting to track differentiation. We have developed a two-step neural differentiation protocol. In the first step, EBs are generated by the hanging-drop technique, and, simultaneously, are induced to differentiate by exposure to retinoic acid (RA). In the second step, neural differentiation proceeds in a 2D or 3D format in the absence of RA.
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Affiliation(s)
- Junning Yang
- Department of Medicine, Cardeza Vascular Research Center, Sidney Kimmel Medical College, Thomas Jefferson University
| | - Chuanshen Wu
- Department of Molecular Cardiology, Cleveland Clinic Foundation
| | - Ioana Stefanescu
- Department of Medicine, Cardeza Vascular Research Center, Sidney Kimmel Medical College, Thomas Jefferson University
| | - Arie Horowitz
- Department of Medicine, Cardeza Vascular Research Center, Sidney Kimmel Medical College, Thomas Jefferson University; Department of Cancer Biology, Cardeza Vascular Research Center, Sidney Kimmel Medical College, Thomas Jefferson University;
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Matsuda Y, Ishiwata T, Yoshimura H, Yamahatsu K, Minamoto T, Arai T. Nestin phosphorylation at threonines 315 and 1299 correlates with proliferation and metastasis of human pancreatic cancer. Cancer Sci 2017; 108:354-361. [PMID: 28002641 PMCID: PMC5378226 DOI: 10.1111/cas.13139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 12/06/2016] [Accepted: 12/17/2016] [Indexed: 01/05/2023] Open
Abstract
The neuroepithelial stem cell marker nestin is a cytoskeletal protein that regulates cell proliferation, invasion, and stemness in various tumors, including pancreatic tumors. In the present study, we examined the expression and roles of phosphorylated nestin in pancreatic cancer cells. Nestin phosphorylation at threonines 315 (Thr315) and 1299 (Thr1299) was observed during mitosis in human pancreatic cancer cells. Nestin phosphorylation was positively correlated with a cell proliferation marker, MIB-1 expression in human pancreatic cancer samples. Transfection of MIA PaCa-2 cells with nestin mutated at Thr315 and/or Thr1299 (to suppress phosphorylation) resulted in lower proliferation rates than those in control groups. Transfecting MIA PaCa-2 cells with wild-type nestin or with nestin mutated at Thr315 increased migration and invasion. In contrast, transfection with nestin mutated at both phosphorylation sites (Thr315 and Thr1299) did not enhance cell migration or invasion. In an intra-splenic xenograft experiment using MIA PaCa-2 cells, tumors expressing the nestin double mutant formed fewer liver metastases than tumors expressing wild-type nestin. Nestin phosphorylation at these two sites was decreased upon treatment with inhibitors for cyclin dependent kinases, AKT, and Aurora in PANC-1 cells, which express a high baseline level of phosphorylated nestin. These findings suggest that phosphorylation of nestin at Thr315 and/or Thr1299 affects cell proliferation, and inhibition of both phosphorylation sites suppresses invasion and metastasis of human pancreatic cancer. Inhibiting nestin phosphorylation at these two sites may represent a novel therapeutic strategy for pancreatic cancer.
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Affiliation(s)
- Yoko Matsuda
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan
| | - Toshiyuki Ishiwata
- Department of Aging and Carcinogenesis, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Hisashi Yoshimura
- Division of Physiological Pathology, Department of Applied Science, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Kazuya Yamahatsu
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Toshinari Minamoto
- Divisions of Translational and Clinical Oncology and Surgical Oncology, Cancer Research Institute, Kanazawa University and Hospital, Kanazawa, Japan
| | - Tomio Arai
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan
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Fazeli Z, Omrani MD, Ghaderian SMH. Down-regulation of nestin in mesenchymal stem cells derived from peripheral blood through blocking bone morphogenesis pathway. J Cell Commun Signal 2016; 10:273-282. [PMID: 27287702 PMCID: PMC5143318 DOI: 10.1007/s12079-016-0334-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 06/06/2016] [Indexed: 12/31/2022] Open
Abstract
Different signaling pathways are implicated in proliferation and differentiation of stem cells. Bone Morphogenesis Pathway (BMP) signaling was known to display an important function in osteogenic and adipogenic differentiation of mesenchymal stem cells (MSCs). In the present study, the authors investigated whether blocking BMP signaling was associated with down regulation of Nestin expression as neural stem cell marker in peripheral blood derived mesenchymal stem cells (PB-MSCs). At first, MSCs were isolated from peripheral blood by plastic adherent ability and flow cytometry analysis. After reaching the confluence, the cells were treated with medium containing Noggin as antagonist of BMP signaling upon 8 days. Real time PCR analysis indicated that the expression of Nestin was diminished in PB-MSCs by attenuating BMP signaling. The obtained results suggested that BMP signaling might have a regulatory function on the Nestin expression in mesenchymal stem cells.
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Affiliation(s)
- Zahra Fazeli
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mir Davood Omrani
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, No 23, Shahid Labbafi Nejad Educational Hospital, Amir Ebrahimi St, Pasdaran Ave, Tehran, Iran.
| | - Sayyed Mohammad Hossein Ghaderian
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, No 23, Shahid Labbafi Nejad Educational Hospital, Amir Ebrahimi St, Pasdaran Ave, Tehran, Iran.
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Abstract
Cellular membranes display a diversity of functions that are conferred by the unique composition and organization of their proteins and lipids. One important aspect of lipid organization is the asymmetric distribution of phospholipids (PLs) across the plasma membrane. The unequal distribution of key PLs between the cytofacial and exofacial leaflets of the bilayer creates physical surface tension that can be used to bend the membrane; and like Ca2+, a chemical gradient that can be used to transduce biochemical signals. PL flippases in the type IV P-type ATPase (P4-ATPase) family are the principle transporters used to set and repair this PL gradient and the asymmetric organization of these membranes are encoded by the substrate specificity of these enzymes. Thus, understanding the mechanisms of P4-ATPase substrate specificity will help reveal their role in membrane organization and cell biology. Further, decoding the structural determinants of substrate specificity provides investigators the opportunity to mutationally tune this specificity to explore the role of particular PL substrates in P4-ATPase cellular functions. This work reviews the role of P4-ATPases in membrane biology, presents our current understanding of P4-ATPase substrate specificity, and discusses how these fundamental aspects of P4-ATPase enzymology may be used to enhance our knowledge of cellular membrane biology.
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Affiliation(s)
- Bartholomew P. Roland
- Vanderbilt University, Department of Biological Sciences, 1161 21st Ave South, Nashville, TN 37235
| | - Todd R. Graham
- Vanderbilt University, Department of Biological Sciences, 1161 21st Ave South, Nashville, TN 37235
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Meus MA, Hertig V, Villeneuve L, Jasmin JF, Calderone A. Nestin Expressed by Pre-Existing Cardiomyocytes Recapitulated in Part an Embryonic Phenotype; Suppressive Role of p38 MAPK. J Cell Physiol 2016; 232:1717-1727. [DOI: 10.1002/jcp.25496] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 07/19/2016] [Indexed: 01/18/2023]
Affiliation(s)
- Marc-Andre Meus
- Montreal Heart Institute; Université de Montréal; Montréal Québec Canada
- Département de Physiologie Moléculaire et Intégrative; Université de Montréal; Montréal Québec Canada
| | - Vanessa Hertig
- Montreal Heart Institute; Université de Montréal; Montréal Québec Canada
- Département de Physiologie Moléculaire et Intégrative; Université de Montréal; Montréal Québec Canada
| | - Louis Villeneuve
- Montreal Heart Institute; Université de Montréal; Montréal Québec Canada
| | - Jean-Francois Jasmin
- Department of Pharmaceutical Sciences; University of the Sciences in Philadelphia; Philadelphia Pennsylvania
| | - Angelino Calderone
- Montreal Heart Institute; Université de Montréal; Montréal Québec Canada
- Département de Physiologie Moléculaire et Intégrative; Université de Montréal; Montréal Québec Canada
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Impact of maternal diabetes type 1 on proliferative potential, differentiation and apoptotic activity in villous capillaries of term placenta. Placenta 2016; 40:1-7. [DOI: 10.1016/j.placenta.2016.02.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 02/05/2016] [Accepted: 02/08/2016] [Indexed: 12/29/2022]
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47
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Robert A, Hookway C, Gelfand VI. Intermediate filament dynamics: What we can see now and why it matters. Bioessays 2016; 38:232-43. [PMID: 26763143 DOI: 10.1002/bies.201500142] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The mechanical properties of vertebrate cells are largely defined by the system of intermediate filaments (IF). As part of a dense network, IF polymers are constantly rearranged and relocalized in the cell to fulfill their duty as cells change shape, migrate, or divide. With the development of new imaging technologies, such as photoconvertible proteins and super-resolution microscopy, a new appreciation for the complexity of IF dynamics has emerged. This review highlights new findings about the transport of IF, the remodeling of filaments by a process of severing and re-annealing, and the subunit exchange that occurs between filament precursors and a soluble pool of IF. We will also discuss the unique dynamic features of the keratin IF network. Finally, we will speculate about how the dynamic properties of IF are related to their functions.
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Affiliation(s)
- Amélie Robert
- Department of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Caroline Hookway
- Department of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Vladimir I Gelfand
- Department of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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Matsuda Y, Ishiwata T, Yoshimura H, Yamashita S, Ushijima T, Arai T. Systemic Administration of Small Interfering RNA Targeting Human Nestin Inhibits Pancreatic Cancer Cell Proliferation and Metastasis. Pancreas 2016; 45:93-100. [PMID: 26335012 DOI: 10.1097/mpa.0000000000000427] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVES Nestin, a progenitor/stem cell marker, is expressed in human pancreatic cancer, where its expression correlates positively with invasiveness and metastasis. Here, we investigated the inhibition of nestin expression and the regulation of nestin expression. METHODS We analyzed the effects of small interfering RNA (siRNA) targeting nestin using pancreatic cancer cell lines. RESULTS Nestin siRNA inhibited the growth, migration, invasion, and sphere-forming ability of the pancreatic cancer cell lines. Pancreatic cancer cells cotreated with gemcitabine and nestin siRNA exhibited lower cell viability than cells treated with a control siRNA, gemcitabine alone, or nestin siRNA alone. Cells derived from the metastatic nodules of mice showed higher nestin expression than the parental cells, and nestin expression in pancreatic cancer cells was regulated by methylation of the nestin gene. In an orthotopic implantation model using mice, administration of nestin siRNA significantly decreased primary and metastatic tumor formation by human pancreatic cancer cells compared to tumor formation in control siRNA-treated mice. CONCLUSIONS Nestin plays a key role in pancreatic cancer cell metastasis and stemness and that administration of nestin siRNA may offer a novel therapeutic strategy for pancreatic cancer.
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Affiliation(s)
- Yoko Matsuda
- From the *Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Itabashi-ku; †Departments of Pathology and Integrative Oncological Pathology, Nippon Medical School, Bunkyo-ku; and ‡Division of Epigenomics, National Cancer Center Research Institute, Chuo-ku, Tokyo, Japan
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Lindqvist J, Wistbacka N, Eriksson JE. Studying Nestin and its Interrelationship with Cdk5. Methods Enzymol 2015; 568:509-35. [PMID: 26795482 DOI: 10.1016/bs.mie.2015.09.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Current research utilizes the specific expression pattern of intermediate filaments (IF) for identifying cellular state and origin, as well as for the purpose of disease diagnosis. Nestin is commonly utilized as a specific marker and driver for CNS progenitor cell types, but in addition, nestin can be found in several mesenchymal progenitor cells, and it is constitutively expressed in a few restricted locations, such as muscle neuromuscular junctions and kidney podocytes. Alike most other members of the IF protein family, nestin filaments are dynamic, constantly being remodeled through posttranslational modifications, which alter the solubility, protein levels, and signaling capacity of the nestin filaments. Through its interactions with kinases and other signaling executors, resulting in a complex and bidirectional regulation of cell signaling events, nestin has the potential to determine whether cells divide, differentiate, migrate, or stay in place. In this review, the broad and similar roles of IFs as dynamic signaling scaffolds, is exemplified by observations of nestin functions and its interaction with the cyclin- dependent kinase 5, the atypical kinase in the family of cyclin-dependent kinases.
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Affiliation(s)
- Julia Lindqvist
- Cell Biology, Biosciences, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland; Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland
| | - Num Wistbacka
- Cell Biology, Biosciences, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland; Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland
| | - John E Eriksson
- Cell Biology, Biosciences, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland; Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland.
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Lestanova Z, Bacova Z, Kiss A, Havranek T, Strbak V, Bakos J. Oxytocin Increases Neurite Length and Expression of Cytoskeletal Proteins Associated with Neuronal Growth. J Mol Neurosci 2015; 59:184-92. [DOI: 10.1007/s12031-015-0664-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 10/05/2015] [Indexed: 12/13/2022]
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