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PubMed Journals Articles About "Researchers Find Efficient Produce Neurons From Pluripotent Stem" RSS

16:37 EST 12th December 2018 | BioPortfolio

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Showing "Researchers find efficient produce neurons from pluripotent stem" PubMed Articles 1–25 of 17,000+

Induction of pluripotent stem cells by reprogramming human ocular fibroblasts under xeno-free conditions.

To develop an efficient and xeno-free standard eye-derived induced pluripotent stem cell reprogramming protocol for use during induced pluripotent stem cell-based cell therapies in treating retinal degenerative diseases and to compare the relative effectiveness of both animal- and non-animal-derived culture systems in the generation of induced pluripotent stem cells.


Human Pluripotent Stem-Cell-Derived Cortical Neurons Integrate Functionally into the Lesioned Adult Murine Visual Cortex in an Area-Specific Way.

The transplantation of pluripotent stem-cell-derived neurons constitutes a promising avenue for the treatment of several brain diseases. However, their potential for the repair of the cerebral cortex remains unclear, given its complexity and neuronal diversity. Here, we show that human visual cortical cells differentiated from embryonic stem cells can be transplanted and can integrate successfully into the lesioned mouse adult visual cortex. The transplanted human neurons expressed the appropriate repertoir...

A Comprehensive Analysis of Protocols for Deriving Dopaminergic Neurons from Human Pluripotent Stem Cells.

The potential applications of human embryonic and induced pluripotent stem cells has led to immense interest in developing new protocols to differentiate specific cell types or modifying existing protocols. To investigate to what extent and why new protocols for the same cell types are developed and adopted, we systematically evaluated 158 publications (2004-2017) that differentiated human stem cells into dopaminergic neurons. We categorized each article by degree of novelty and recorded motivations for pro...


Efficient derivation of extended pluripotent stem cells from NOD-scid Il2rg mice.

Recently we have established a new culture condition enabling the derivation of extended pluripotent stem (EPS) cells, which, compared to conventional pluripotent stem cells, possess superior developmental potential and germline competence. However, it remains unclear whether this condition permits derivation of EPS cells from mouse strains that are refractory or non-permissive to pluripotent cell establishment. Here, we show that EPS cells can be robustly generated from non-permissive NOD-scid Il2rg mice t...

Defined Conditions for Differentiation of Functional Retinal Ganglion Cells From Human Pluripotent Stem Cells.

We aimed to establish an efficient method for retinal ganglion cell (RGC) differentiation from human pluripotent stem cells (hPSCs) using defined factors.

Beating Heart Cells from Hair-Follicle-Associated Pluripotent (HAP) Stem Cells.

The neural stem-cell marker nestin is expressed in hair follicle stem cells located in the bulge area which are termed hair-follicle-associated pluripotent (HAP) stem cells. HAP stem cells can differentiate into neurons, glia, keratinocytes, smooth muscle cells, and melanocytes in vitro. Subsequently, we demonstrated that HAP stem cells could affect nerve and spinal cord regeneration in mouse models. We subsequently demonstrated that HAP stem cells differentiated into beating cardiac muscle cells. The diff...

Establishment of an integration-free induced pluripotent stem cell line (MUSIi005-A) from exfoliated renal epithelial cells.

Human induced pluripotent stem cells (iPSCs) were generated from exfoliated renal epithelial cells isolated from a urine sample of a 31-year-old healthy woman. Epithelial cells were characterized for the expression of E-cadherin and reprogrammed using non-integrating Sendai viral vectors. The urine-derived iPSC line (designated as MUSIi005-A) was karyotypically normal, expressed pluripotent markers, differentiated into cells of three embryonic germ layers, and showed no viral and transgene expressions at pa...

Pluripotent stem cell replacement approaches to treat type 1 diabetes.

Stem cells represent a potential candidate for β cell replacement in type 1 diabetes. Pluripotent stem cells are able to differentiate in vitro into functional insulin producing cells, that can restore normoglycemia in diabetic mice. Clinical trials with embryonic stem cell-derived pancreatic progenitors are ongoing. Besides, induced pluripotent stem cells offer the chance of personalized cell therapy. So far, transition to the clinic still needs to face critical issues, such as immunogenicity and safety o...

Synaptic Microcircuit Modeling with 3D Cocultures of Astrocytes and Neurons from Human Pluripotent Stem Cells.

A barrier to our understanding of how various cell types and signals contribute to synaptic circuit function is the lack of relevant models for studying the human brain. One emerging technology to address this issue is the use of three dimensional (3D) neural cell cultures, termed 'organoids' or 'spheroids', for long term preservation of intercellular interactions including extracellular adhesion molecules. However, these culture systems are time consuming and not systematically generated. Here, we detail a...

Sequential Application of Discrete Topographical Patterns Enhances Derivation of Functional Mesencephalic Dopaminergic Neurons from Human Induced Pluripotent Stem Cells.

Parkinson's Disease is a progressive neurodegenerative disorder attributed to death of mesencephalic dopaminergic (DA) neurons. Pluripotent stem cells have great potential in the study for this late-onset disease, but acquirement of cells that are robust in quantity and quality is still technically demanding. Biophysical cues have been shown to direct stem cell fate, but the effect of different topographies in the lineage commitment and subsequent maturation stages of cells have been less examined. Using hu...

Modelling the Dorsal Root Ganglia using Human Pluripotent Stem Cells: A Platform to Study Peripheral Neuropathies.

Sensory neurons of the dorsal root ganglia (DRG) are the primary responders to stimuli inducing feelings of touch, pain, temperature, vibration, pressure and muscle tension. They consist of multiple subpopulations based on their morphology, molecular and functional properties. Our understanding of DRG sensory neurons has been predominantly driven by rodent studies and using transformed cell lines, whereas less is known about human sensory DRG neurons simply because of limited availability of human tissue. A...

Hair-Follicle-Associated Pluripotent (HAP) Stem Cells Encapsulated on Polyvinylidene Fluoride Membranes (PFM) Promote Functional Recovery from Spinal Cord Injury.

Our previous studies showed that nestin-expressing hair follicle-associated-pluripotent (HAP) stem cells, which reside in the bulge area of the hair follicle, could restore injured nerve and spinal cord and differentiate into cardiac muscle cells. Here we transplanted mouse green fluorescent protein (GFP)-expressing HAP stem-cell colonies enclosed on polyvinylidene fluoride membranes (PFM) into the severed thoracic spinal cord of nude mice. After seven weeks of implantation, we found the differentiation of ...

20 Years of Human Pluripotent Stem Cell Research: It All Started with Five Lines.

November 2018 marks the 20 anniversary of the seminal human embryonic stem cell (hESC) publication, which reported the initial hESC derivations and launched the field of human pluripotent stem cell research. To commemorate this significant milestone, we reflect on the scientific, economic, and clinically relevant impact of this groundbreaking achievement.

A Simplified and Efficient Protocol for Derivation and Maintenance of High-Quality Mouse Primed Pluripotent Stem Cells Using Wnt Inhibition.

Epiblast stem cells (EpiSCs) are primed pluripotent stem cells (PSCs) derived from mouse postimplantation embryos. Interestingly, EpiSCs share many characteristics with human PSCs such as human embryonic stem cells (hESCs) and human induced PSCs (hiPSC). Thus, EpiSCs can serve as a model for studying primed states of pluripotency. This article describes a simple yet highly efficient protocol for EpiSC derivation and maintenance of homogenous EpiSCs using an inhibitor of WNT secretion. Using this method, Epi...

Application of pluripotent stem cells for treatment of human neuroendocrine disorders.

The neuroendocrine system is composed of many types of functional cells. Matured cells are generally irreversible to progenitor cells and it is difficult to obtain enough from our body. Therefore, studying specific subtypes of human neuroendocrine cells in vitro has not been feasible. One of the solutions is pluripotent stem cells, such as embryonic stem (ES) cells and induced pluripotent stem (iPS) cells. These are unlimited sources and, in theory, are able to give rise to all cell types of our body. There...

Generation of an induced pluripotent stem cell line from an individual with a heterozygous RECQL4 mutation.

The DNA helicase RECQL4 is known for its roles in DNA replication and repair. RECQL4 mutations cause several genetic disorders including Rothmund-Thomson syndrome (RTS), characterized by developmental defects and predisposition to osteosarcoma. Here we reprogrammed fibroblasts with a heterozygous RECQL4 mutation (c.1878 + 32_1878 + 55del24) to induced pluripotent stem cells (iPSCs). These iPSCs are pluripotent and are able to be differentiated into all three germ layers, providing a novel tool to fu...

Application of induced pluripotent stem cell and embryonic stem cell technology to the study of male infertility.

Stem cells (SCs) are classes of undifferentiated biological cells existing only at the embryonic, fetal, and adult stages that can divide to produce specialized cell types during fetal development and remain in our bodies throughout life. The progression of regenerative and reproductive medicine owes the advancement of respective in vitro and in vivo biological science on the stem cell nature under appropriate conditions. The SCs are promising therapeutic tools to treat currently of infertility because of w...

Generation of a human induced pluripotent stem cell line, KSCBi003-A, from human adipose tissue-derived mesenchymal stem cells using a chromosomal integration-free system.

We generated a human induced pluripotent stem cell (hiPSC) line, KSCBi003-A, from adipose tissue-derived mesenchymal stem cells (Ad-MSCs) using a Sendai virus-based gene delivery system. We confirmed that the KSCBi003-A has a normal karyotype and short tandem repeat (STR)-based identities that match the parent cells. We also confirmed that the cell line expresses pluripotent stem cell markers such as Nanog, OCT4, SSEA-4, TRA-1-60, and TRA-1-81. We also analyzed that the KSCBi003-A has an ability to differen...

State performance in pluripotent and adult stem cell research, 2009-2016.

To examine how the geographic distribution of pluripotent and adult stem cell research publications within the USA differs from other areas of biomedical research.

Protagonist or antagonist? The complex roles of retinoids in the regulation of hematopoietic stem cells and their specification from pluripotent stem cells.

Hematopoietic stem cells (HSCs) are multipotent cells responsible for the maintenance of the hematopoietic system throughout life. Dysregulation of the balance between HSC self-renewal, death and differentiation can have serious consequences such as myelodysplastic syndromes (MDS) or leukemia. All-trans retinoic acid (ATRA), the biologically active metabolite of vitamin A/retinoic acid (RA), has been shown to have pleiotropic effects on hematopoietic cells, enhancing HSC self-renewal whilst also increasing ...

Stem Cells, Genome Editing, and the Path to Translational Medicine.

The derivation of human embryonic stem cells (hESCs) and the stunning discovery that somatic cells can be reprogrammed into human induced pluripotent stem cells (hiPSCs) holds the promise to revolutionize biomedical research and regenerative medicine. In this Review, we focus on disorders of the central nervous system and explore how advances in human pluripotent stem cells (hPSCs) coincide with evolutions in genome engineering and genomic technologies to provide realistic opportunities to tackle some of th...

Generation of a human induced pluripotent stem cell-based model for tauopathies combining three microtubule-associated protein tau mutations which displays several phenotypes linked to neurodegeneration.

Tauopathies are neurodegenerative diseases characterized by TAU protein-related pathology, including frontotemporal dementia and Alzheimer's disease among others. Mutant TAU animal models are available, but none of them faithfully recapitulates human pathology and are not suitable for drug screening. To create a new in vitro tauopathy model, we generated a footprint-free triple MAPT-mutant human induced pluripotent stem cell line (N279K, P301L, and E10+16 mutations) using clustered regularly interspaced sh...

Viral-free generation and characterization of a human induced pluripotent stem cell line from dermal fibroblasts.

Peripheral dermal fibroblasts (DF) from a healthy 56 year old female were obtained from the Centre for Healthy Brain Ageing (CHeBA) Biobank, University of New South Wales, under the material transfer agreement with the University of Wollongong. DFs were reprogrammed via mRNA-delivered transcription factors into induced pluripotent stem cells (iPSCs). The generated iPSCs were confirmed to be pluripotent, capable of three germ layer differentiation and are thus a useful resource for creating iPSC-derived he...

Progress in dopaminergic cell-replacement and regenerative strategies for Parkinson's disease.

Parkinson's disease (PD) is a chronic progressive neurodegenerative disorder symptomatically characterized by resting tremor, rigidity, bradykinesia and gait impairment. These motor deficits suffered by PD patients primarily result from selective dysfunction or loss of dopaminergic neurons of the substantia nigra pars compacta (SNpc). Most of the existing therapies for PD are based on the replacement of dopamine, which is symptomatically effective in the early stage but becomes increasingly less effective a...

Combining NGN2 Programming with Developmental Patterning Generates Human Excitatory Neurons with NMDAR-Mediated Synaptic Transmission.

Transcription factor programming of pluripotent stem cells (PSCs) has emerged as an approach to generate human neurons for disease modeling. However, programming schemes produce a variety of cell types, and those neurons that are made often retain an immature phenotype, which limits their utility in modeling neuronal processes, including synaptic transmission. We report that combining NGN2 programming with SMAD and WNT inhibition generates human patterned induced neurons (hpiNs). Single-cell analyses showe...


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