scholarly journals Perspectives on the Use of Stem Cells for Autism Treatment

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Dario Siniscalco ◽  
James Jeffrey Bradstreet ◽  
Nataliia Sych ◽  
Nicola Antonucci
Keyword(s):  
Stem Cells ◽  
Adult Stem Cells ◽  
Molecular Mechanisms ◽  
Intestinal Inflammation ◽  
Autism Spectrum ◽  
Great Expectations ◽  
Cell Therapies ◽  
Autism Treatment ◽  
Core Symptoms ◽  
Chronic Intestinal Inflammation

Autism and autism spectrum disorders (ASDs) are complex neurodevelopmental disorders. ASDs are clinically defined by deficits in communication, social skills, and repetitive and/or restrictive interests and behaviours. With the prevalence rates for ASDs rapidly increasing, the need for effective therapies for autism is a priority for biomedical research. Currently available medications do not target the core symptoms, can have markedly adverse side-effects, and are mainly palliative for negative behaviours. The development of molecular and regenerative interventions is progressing rapidly, and medicine holds great expectations for stem cell therapies. Cells could be designed to target the observed molecular mechanisms of ASDs, that is, abnormal neurotransmitter regulation, activated microglia, mitochondrial dysfunction, blood-brain barrier disruptions, and chronic intestinal inflammation. Presently, the paracrine, secretome, and immunomodulatory effects of stem cells would appear to be the likely mechanisms of application for ASD therapeutics. This review will focus on the potential use of the various types of stem cells: embryonic, induced pluripotential, fetal, and adult stem cells as targets for ASD therapeutics.

scholarly journals Molecular Mechanisms of Transdifferentiation of Adipose-Derived Stem Cells into Neural Cells: Current Status and Perspectives

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Liang Luo ◽  
Da-Hai Hu ◽  
James Q. Yin ◽  
Ru-Xiang Xu
Keyword(s):  
Stem Cells ◽  
Stem Cell ◽  
Psychological Health ◽  
Adult Stem Cells ◽  
Molecular Mechanisms ◽  
Neurological Diseases ◽  
Current Status ◽  
Neural Cells ◽  
Cell Therapies ◽  
Physical And Psychological Health

Neurological diseases can severely compromise both physical and psychological health. Recently, adult mesenchymal stem cell- (MSC-) based cell transplantation has become a potential therapeutic strategy. However, most studies related to the transdifferentiation of MSCs into neural cells have had disappointing outcomes. Better understanding of the mechanisms underlying MSC transdifferentiation is necessary to make adult stem cells more applicable to treating neurological diseases. Several studies have focused on adipose-derived stromal/stem cell (ADSC) transdifferentiation. The purpose of this review is to outline the molecular characterization of ADSCs, to describe the methods for inducing ADSC transdifferentiation, and to examine factors influencing transdifferentiation, including transcription factors, epigenetics, and signaling pathways. Exploring and understanding the mechanisms are a precondition for developing and applying novel cell therapies.

scholarly journals Area light source‐triggered latent angiogenic molecular mechanisms intensify therapeutic efficacy of adult stem cells

2021 ◽  
Author(s):  
Yu‐Jin Kim ◽  
Sung‐Won Kim ◽  
Gwang‐Bum Im ◽  
Yeong Hwan Kim ◽  
Gun‐Jae Jeong ◽  
...  
Keyword(s):  
Stem Cells ◽  
Light Source ◽  
Therapeutic Efficacy ◽  
Adult Stem Cells ◽  
Molecular Mechanisms

Attempts towards derivation and establishment of bovine embryonic stem cell-like cultures

2005 ◽  
Vol 17 (2) ◽  
pp. 113 ◽  
Author(s):  
Poul Maddox-Hyttel ◽  
Jakob O. Gjørret
Keyword(s):  
Stem Cells ◽  
Adult Stem Cells ◽  
Germ Line ◽  
Current Knowledge ◽  
Mammalian Species ◽  
Embryonic Stem ◽  
Transgenic Animals ◽  
Great Expectations ◽  
Safety Issues ◽  
Germ Line Transmission

Current knowledge on the biology of mammalian embryonic stem cells (ESC) is stunningly sparse in light of their potential value in studies of development, functional genomics, generation of transgenic animals and human medicine. Despite many efforts to derive ESC from other mammalian species, ESC that retain their capacity for germ line transmission have only been verified in the mouse. However, the criterion of germ line transmission may not need to be fulfilled for exploitation of other abilities of these cells. Promising results with human ESC-like cells and adult stem cells have nourished great expectations for their potential use in regenerative medicine. However, such an application is far from reality and substantial research is required to elucidate aspects of the basic biology of pluripotent cells, as well as safety issues associated with the use of such cells in therapy. In this context, methods for the derivation, propagation and differentiation of ESC-like cultures from domestic animals would be highly desirable as biologically relevant models. Here, we review previously published efforts to establish bovine ESC-like cells and describe a procedure used in attempts to derive similar cells from bovine Day 12 embryos.

From fibroblasts and stem cells: implications for cell therapies and somatic cloning

2005 ◽  
Vol 17 (2) ◽  
pp. 125 ◽  
Author(s):  
Wilfried A. Kues ◽  
Joseph W. Carnwath ◽  
Heiner Niemann
Keyword(s):  
Stem Cells ◽  
Adult Stem Cells ◽  
Inner Cell Mass ◽  
Cell Mass ◽  
Embryonic Stem ◽  
Culture Conditions ◽  
Human Embryos ◽  
Somatic Stem Cells ◽  
Primary Fibroblast ◽  
Cell Therapies

Pluripotent embryonic stem cells (ESCs) from the inner cell mass of early murine and human embryos exhibit extensive self-renewal in culture and maintain their ability to differentiate into all cell lineages. These features make ESCs a suitable candidate for cell-replacement therapy. However, the use of early embryos has provoked considerable public debate based on ethical considerations. From this standpoint, stem cells derived from adult tissues are a more easily accepted alternative. Recent results suggest that adult stem cells have a broader range of potency than imagined initially. Although some claims have been called into question by the discovery that fusion between the stem cells and differentiated cells can occur spontaneously, in other cases somatic stem cells have been induced to commit to various lineages by the extra- or intracellular environment. Recent data from our laboratory suggest that changes in culture conditions can expand a subpopulation of cells with a pluripotent phenotype from primary fibroblast cultures. The present paper critically reviews recent data on the potency of somatic stem cells, methods to modify the potency of somatic cells and implications for cell-based therapies.

scholarly journals Differentiation of Mesenchymal Stem Cells to Neuroglia: in the Context of Cell Signalling

2019 ◽  
Vol 15 (6) ◽  
pp. 814-826 ◽  
Author(s):  
Sajan George ◽  
Michael R. Hamblin ◽  
Heidi Abrahamse
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Adult Stem Cells ◽  
Molecular Mechanisms ◽  
Culture Media ◽  
Cell Signalling ◽  
Specific Cell ◽  
Ongoing Research ◽  
Neural Lineage

Abstract The promise of engineering specific cell types from stem cells and rebuilding damaged or diseased tissues has fascinated stem cell researchers and clinicians over last few decades. Mesenchymal Stem Cells (MSCs) have the potential to differentiate into non-mesodermal cells, particularly neural-lineage, consisting of neurons and glia. These multipotent adult stem cells can be used for implementing clinical trials in neural repair. Ongoing research identifies several molecular mechanisms involved in the speciation of neuroglia, which are tightly regulated and interconnected by various components of cell signalling machinery. Growing MSCs with multiple inducers in culture media will initiate changes on intricately interlinked cell signalling pathways and processes. Net result of these signal flow on cellular architecture is also dependent on the type of ligands and stem cells investigated in vitro. However, our understanding about this dynamic signalling machinery is limited and confounding, especially with spheroid structures, neurospheres and organoids. Therefore, the results for differentiating neurons and glia in vitro have been inconclusive, so far. Added to this complication, we have no convincing evidence about the electrical conductivity and functionality status generated in differentiating neurons and glia. This review has taken a step forward to tailor the information on differentiating neuroglia with the common methodologies, in practice.

M1717 Molecular Mechanisms of Compensatory Regulation of Na-Glutamine Co-Transport During Chronic Intestinal Inflammation

2008 ◽  
Vol 134 (4) ◽  
pp. A-404
Author(s):  
Prosenjit Saha ◽  
Ramesh Kekuda ◽  
Subha Arthur ◽  
Jamilur R. Talukder ◽  
Uma Sundaram
Keyword(s):  
Molecular Mechanisms ◽  
Intestinal Inflammation ◽  
Chronic Intestinal Inflammation ◽  
Compensatory Regulation

Realistic Prospects for Stem Cell Therapeutics

Hematology ◽  
2003 ◽  
Vol 2003 (1) ◽  
pp. 398-418 ◽  
Author(s):  
George Q. Daley ◽  
Margaret A. Goodell ◽  
Evan Y. Snyder
Keyword(s):  
Stem Cells ◽  
Stem Cell ◽  
Regenerative Medicine ◽  
Cell Biology ◽  
Adult Stem Cells ◽  
Stem Cell Biology ◽  
Cell Therapies ◽  
The Media ◽  
New Treatment ◽  
Definition Of

Abstract Studies of the regenerating hematopoietic system have led to the definition of many of the fundamental principles of stem cell biology. Therapies based on a range of tissue stem cells have been widely touted as a new treatment modality, presaging an emerging new specialty called regenerative medicine that promises to harness stem cells from embryonic and somatic sources to provide replacement cell therapies for genetic, malignant, and degenerative conditions. Insights borne from stem cell biology also portend development of protein and small molecule therapeutics that act on endogenous stem cells to promote repair and regeneration. Much of the newfound enthusiasm for regenerative medicine stems from the hope that advances in the laboratory will be followed soon thereafter by breakthrough treatments in the clinic. But how does one sort through the hype to judge the true promise? Are stem cell biologists and the media building expectations that cannot be met? Which diseases can be treated, and when can we expect success? In this review, we outline the realms of investigation that are capturing the most attention, and consider the current state of scientific understanding and controversy regarding the properties of embryonic and somatic (adult) stem cells. Our objective is to provide a framework for appreciating the promise while at the same time understanding the challenges behind translating fundamental stem cell biology into novel clinical therapies.

scholarly journals Cell therapies for traumatic brain injury

2008 ◽  
Vol 24 (3-4) ◽  
pp. E18 ◽  
Author(s):  
Matthew T. Harting ◽  
James E. Baumgartner ◽  
Laura L. Worth ◽  
Linda Ewing-Cobbs ◽  
Adrian P. Gee ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Stem Cells ◽  
Clinical Trials ◽  
Brain Injury ◽  
Cell Therapy ◽  
Adult Stem Cells ◽  
Cell Types ◽  
Current Status ◽  
Cell Therapies ◽  
Current Therapies

Preliminary discoveries of the efficacy of cell therapy are currently being translated to clinical trials. Whereas a significant amount of work has been focused on cell therapy applications for a wide array of diseases, including cardiac disease, bone disease, hepatic disease, and cancer, there continues to be extraordinary anticipation that stem cells will advance the current therapeutic regimen for acute neurological disease. Traumatic brain injury is a devastating event for which current therapies are limited. In this report the authors discuss the current status of using adult stem cells to treat traumatic brain injury, including the basic cell types and potential mechanisms of action, preclinical data, and the initiation of clinical trials.

scholarly journals Cytoplasmic labile iron accumulates in aging stem cells perturbing a key rheostat for identity control

2021 ◽  
Author(s):  
Yun-Ruei Kao ◽  
Jiahao Chen ◽  
Rajni Kumari ◽  
Madhuri Tatiparthy ◽  
Yuhong Ma ◽  
...  
Keyword(s):  
Stem Cells ◽  
Stem Cell ◽  
Cell Division ◽  
Adult Stem Cells ◽  
Iron Homeostasis ◽  
Molecular Mechanisms ◽  
Labile Iron Pool ◽  
Wide Range ◽  
Labile Iron ◽  
Iron Pool

Bone marrow resident and rarely dividing haematopoietic stem cells (HSC) harbour an extensive self-renewal capacity to sustain life-long blood formation; albeit their function declines during ageing. Various molecular mechanisms confer stem cell identity, ensure long-term maintenance and are known to be deregulated in aged stem cells. How these programs are coordinated, particularly during cell division, and what triggers their ageing-associated dysfunction has been unknown. Here, we demonstrate that HSC, containing the lowest amount of cytoplasmic chelatable iron (labile iron pool) among hematopoietic cells, activate a limited iron response during mitosis. Engagement of this iron homeostasis pathway elicits mobilization and β-oxidation of arachidonic acid and enhances stem cell-defining transcriptional programs governed by histone acetyl transferase Tip60/KAT5. We further find an age-associated expansion of the labile iron pool, along with loss of Tip60/KAT5-dependent gene regulation to contribute to the functional decline of ageing HSC, which can be mitigated by iron chelation. Together, our work reveals cytoplasmic redox active iron as a novel rheostat in adult stem cells; it demonstrates a role for the intracellular labile iron pool in coordinating a cascade of molecular events which reinforces HSC identity during cell division and to drive stem cell ageing when perturbed. As loss of iron homeostasis is commonly observed in the elderly, we anticipate these findings to trigger further studies into understanding and therapeutic mitigation of labile iron pool-dependent stem cell dysfunction in a wide range of degenerative and malignant pathologies.

scholarly journals Resveratrol in Autism Spectrum Disorders: Behavioral and Molecular Effects

Antioxidants ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 188 ◽  
Author(s):  
Michele Malaguarnera ◽  
Haroon Khan ◽  
Omar Cauli
Keyword(s):  
Oxidative Stress ◽  
Animal Models ◽  
Molecular Mechanisms ◽  
Autism Spectrum ◽  
Immune Alteration ◽  
Stress Markers ◽  
Behavioral Abnormalities ◽  
Spectrum Disorders ◽  
Core Symptoms ◽  
And Oxidative Stress

Resveratrol (RSV) is a polyphenolic stillbenoid with significant anti-oxidative and anti-inflammatory properties recently tested in animal models of several neurological diseases. Altered immune alteration and oxidative stress have also been found in patients with autism spectrum disorders (ASD), and these alterations could add to the pathophysiology associated with ASD. We reviewed the current evidence about the effects of RSV administration in animal models and in patients with ASD. RSV administration improves the core-symptoms (social impairment and stereotyped activity) in animal models and it also displays beneficial effects in other behavioral abnormalities such as hyperactivity, anxiety and cognitive function. The molecular mechanisms by which RSV restores or improves behavioral abnormalities in animal models encompass both normalization of central and peripheral immune alteration and oxidative stress markers and new molecular mechanisms such as expression of cortical gamma-amino butyric acid neurons, certain type of miRNAs that regulate spine growth. One randomized, placebo-controlled clinical trial (RCT) suggested that RSV add-on risperidone therapy improves comorbid hyperactivity/non-compliance, whereas no effects where seen in core symptoms of ASD No RCTs about the effect of RSV as monotherapy have been performed and the results from preclinical studies encourage its feasibility. Further clinical trials should also identify those ASD patients with immune alterations and/or with increased oxidative stress markers that would likely benefit from RSV administration.

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