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https://www.readbyqxmd.com/read/27922138/mitomycin-c-treated-human-induced-pluripotent-stem-cells-as-a-safe-delivery-system-of-gold-nanorods-for-targeted-photothermal-therapy-of-gastric-cancer
#1
Meng Yang, Yanlei Liu, Wenxiu Hou, Xiao Zhi, Chunlei Zhang, Xinquan Jiang, Fei Pan, Yuming Yang, Jian Ni, Daxiang Cui
Human-induced pluripotent stem cells (iPS) possess an intrinsic tumor tropism ability. However, iPS cells are impeded in clinical applications of tumor therapy due to the formation of teratomas and their survival in normal organs such as the liver, lungs, spleen and kidneys. Mitomycin C (MMC) can overcome this limitation by suppressing iPS proliferation. Herein, we fabricated a safe delivery system of iPS cells treated with MMC loading with gold nanorods (AuNRs) for the targeted photothermal treatment of gastric cancer...
December 6, 2016: Nanoscale
https://www.readbyqxmd.com/read/27910049/gene-transfer-in-cardiomyocytes-derived-from-es-and-ips-cells
#2
Francesca Stillitano, Ioannis Karakikes, Roger J Hajjar
The advent of human induced pluripotent stem cell (hiPSC) technology has produced patient-specific hiPSC derived cardiomyocytes (hiPSC-CMs) that can be used as a platform to study cardiac diseases and to explore new therapies.The ability to genetically manipulate hiPSC-CMs not only is essential for identifying the structural and/or functional role of a protein but can also provide valuable information regarding therapeutic applications. In this chapter, we describe protocols for culture, maintenance, and cardiac differentiation of hiPSCs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27907001/multifactorial-optimizations-for-directing-endothelial-fate-from-stem-cells
#3
Drew E Glaser, William S Turner, Nicole Madfis, Lian Wong, Jose Zamora, Nicholas White, Samuel Reyes, Andrew B Burns, Ajay Gopinathan, Kara E McCloskey
Embryonic stem cells (ESC) and induced pluripotent stem (iPS) cells are attractive in vitro models of vascular development, therapeutic angiogenesis, and tissue engineering. However, distinct ESC and iPS cell lines respond differentially to the same microenvironmental factors. Developing improved/optimized differentiation methodologies tailored/applicable in a number of distinct iPS and ESC lines remains a challenge in the field. Currently published methods for deriving endothelial cells (EC) robustly generate high numbers of endothlelial progenitor cells (EPC) within a week, but their maturation to definitive EC is much more difficult, taking up to 2 months and requiring additional purification...
2016: PloS One
https://www.readbyqxmd.com/read/27900567/clinical-potential-of-human-induced-pluripotent-stem-cells-perspectives-of-induced-pluripotent-stem-cells
#4
REVIEW
Dharmendra Kumar, Taruna Anand, Wilfried A Kues
The recent establishment of induced pluripotent stem (iPS) cells promises the development of autologous cell therapies for degenerative diseases, without the ethical concerns associated with human embryonic stem (ES) cells. Initially, iPS cells were generated by retroviral transduction of somatic cells with core reprogramming genes. To avoid potential genotoxic effects associated with retroviral transfection, more recently, alternative non-viral gene transfer approaches were developed. Before a potential clinical application of iPS cell-derived therapies can be planned, it must be ensured that the reprogramming to pluripotency is not associated with genome mutagenesis or epigenetic aberrations...
November 29, 2016: Cell Biology and Toxicology
https://www.readbyqxmd.com/read/27895584/induced-pluripotent-stem-cells-inhibit-bleomycin-induced-pulmonary-fibrosis-in-mice-through-suppressing-tgf-%C3%AE-1-smad-mediated-epithelial-to-mesenchymal-transition
#5
Yan Zhou, Zhong He, Yuan Gao, Rui Zheng, Xiaoye Zhang, Li Zhao, Mingqi Tan
Pulmonary fibrosis is a progressive and irreversible fibrotic lung disorder with high mortality and few treatment options. Recently, induced pluripotent stem (iPS) cells have been considered as an ideal resource for stem cell-based therapy. Although, an earlier study demonstrated the therapeutic effect of iPS cells on pulmonary fibrosis, the exact mechanisms remain obscure. The present study investigated the effects of iPS cells on inflammatory responses, transforming growth factor (TGF)-β1 signaling pathway, and epithelial to mesenchymal transition (EMT) during bleomycin (BLM)-induced lung fibrosis...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27888517/differentiation-of-induced-pluripotent-stem-cell-derived-neutrophil-granulocytes-from-common-marmoset-monkey-callithrix-jacchus
#6
Christopher Schrimpf, Christoph Wrede, Silke Glage, Jan Hegermann, Samantha Backhaus, Rainer Blasczyk, Hans-Gert Heuft, Thomas Müller
BACKGROUND: Inherited and acquired marrow failure syndromes most commonly lead to defect in myeloid and/or neutrophil differentiation and/or function. Besides this, neutropenia induced by cancer-adjusted chemotherapy is a frequent clinical problem. In both cases, cell replacement therapy is a well-established, but due to necessity of donors limited and perilous procedure. Therefore, autologous cell replacement from patients' own marrow-derived cells lowers risk and bares new possibilities for therapy...
November 25, 2016: Transfusion
https://www.readbyqxmd.com/read/27882268/long-term-culture-of-intestinal-cell-progenitors-an-overview-of-their-development-application-and-associated-technologies
#7
REVIEW
Andrew J Hollins, Lee Parry
PURPOSE OF REVIEW: Long-term culture of adult progenitor cells in 3D is a recently emerging technology that inhabits the space between 2D cell lines and organ slice culture. RECENT FINDINGS: Adaptations to defined media components in the wake of advances in ES and iPS cell culture has led to the identification of conditions that maintained intestinal cell progenitors in culture. These conditions retain cellular heterogeneity of the normal or tumour tissue, and the cultures have been shown to be genetically stable, such that substantial biobanks are being created from patient derived material...
2016: Current Pathobiology Reports
https://www.readbyqxmd.com/read/27879220/generation-of-induced-pluripotent-stem-cells-ipscs-from-a-hereditary-spastic-paraplegia-patient-carrying-a-homozygous-y275x-mutation-in-cyp7b1-spg5
#8
Stefan Hauser, Philip Höflinger, Yvonne Theurer, Tim W Rattay, Ludger Schöls
Skin fibroblasts were obtained from a 47-year-old hereditary spastic paraplegia patient carrying a homozygous mutation Y275X in CYP7B1 (Cytochrome P450, Family 7, Subfamily B, Polypeptide 1), responsible for causing hereditary spastic paraplegia type 5 (SPG5). Induced pluripotent stem cells (iPSCs) were generated by transfection with episomal plasmids carrying hOCT4, hSOX2, hKLF4, hL-MYC and hLIN28. The generated line iPS-SPG5-Y275X was transgene-free, retained the specific mutation with no additional genomic aberrations, expressed pluripotency markers and was able to differentiate into cells of all germ layers in vitro...
September 2016: Stem Cell Research
https://www.readbyqxmd.com/read/27879219/induced-pluripotent-stem-cells-ipscs-derived-from-cerebrotendinous-xanthomatosis-ctx-patient-s-fibroblasts-carrying-a-r395s-mutation
#9
Philip Höflinger, Stefan Hauser, Yvonne Theurer, Stefanie Weißenberger, Carlo Wilke, Ludger Schöls
Induced pluripotent stem cells (iPSCs) were generated from dermal fibroblasts from a 60-year-old cerebrotendinous xanthomatosis (CTX) patient, carrying a homozygous mutation c. [1183C>A]; p. R395S in CYP27A1. Episomal plasmids encoding the pluripotency genes OCT4, SOX2, KLF4, L-MYC and LIN28 were introduced via electroporation. The generated line iPS-CTX-R395S has no sign of plasmid integration or chromosomal aberration and retained the mutation site in CYP27A1. Furthermore, iPSCs express pluripotency markers and are able to differentiate in all germ layers in vitro...
September 2016: Stem Cell Research
https://www.readbyqxmd.com/read/27879217/generation-of-optic-atrophy-1-patient-derived-induced-pluripotent-stem-cells-ips-opa1-behr-for-disease-modeling-of-complex-optic-atrophy-syndromes-behr-syndrome
#10
Stefan Hauser, Stefanie Schuster, Yvonne Theurer, Matthis Synofzik, Ludger Schöls
Human skin fibroblasts were isolated from a 48-year-old patient carrying compound heterozygous mutations (c.610+364G>A and c.1311A>G) in OPA1, responsible for early onset optic atrophy complicated by ataxia and pyramidal signs (Behr syndrome; OMIM #210000). Fibroblasts were reprogrammed using episomal plasmids carrying hOCT4, hSOX2, hKLF4, hL-MYC and hLIN28. The generated transgene-free line iPS-OPA1-BEHR showed no additional genomic aberrations, maintained the disease-relevant mutations, expressed important pluripotency markers and was capable to differentiate into cells of all three germ layers in vitro...
September 2016: Stem Cell Research
https://www.readbyqxmd.com/read/27879216/generation-of-induced-pluripotent-stem-cells-ipscs-from-a-hereditary-spastic-paraplegia-patient-carrying-a-homozygous-r486c-mutation-in-cyp7b1-spg5
#11
Philip Höflinger, Yvonne Theurer, Rebecca Schüle, Ludger Schöls, Stefan Hauser
Skin fibroblasts were obtained from a 47-year-old hereditary spastic paraplegia patient carrying a homozygous mutation R486C in CYP7B1 (Cytochrome P450, Family 7, Subfamily B, Polypeptide 1), responsible for causing hereditary spastic paraplegia type 5 (SPG5). Induced pluripotent stem cells (iPSCs) were generated by transfection with episomal plasmids carrying hOCT4, hSOX2, hKLF4, hL-MYC and hLIN28. The generated line iPS-SPG5-R486C was transgene-free, retained the specific mutation with no additional genomic aberrations, expressed pluripotency markers and was able to differentiate into cells of all germ layers in vitro...
September 2016: Stem Cell Research
https://www.readbyqxmd.com/read/27879210/murine-transgenic-ips-cell-line-for-monitoring-and-selection-of-cardiomyocytes
#12
Azra Fatima, Guoxing Xu, Filomain Nguemo, Alexey Kuzmenkin, Karsten Burkert, Jürgen Hescheler, Tomo Šarić
We report here a transgenic murine induced pluripotent stem cell (iPSC) line expressing puromycin N-acetyltransferase (PAC) and enhanced green fluorescent protein (EGFP) under the control of α-myosin heavy chain promoter. This transgenic cell line reproducibly differentiates into EGFP-expressing cardiomyocytes (CMs) which can be generated at high purity with puromycin treatment and exhibit molecular and functional properties of immature heart muscle cells. This genetically modified iPSC line can be used for assessment of the utility of CMs for myocardial repair, pharmacological and toxicological applications and development of improved cardiac differentiation protocols...
September 2016: Stem Cell Research
https://www.readbyqxmd.com/read/27879208/generation-of-induced-pluripotent-stem-cells-ipscs-from-a-retinoblastoma-patient-carrying-a-c-2663g-a-mutation-in-rb1-gene
#13
Sicong Zeng, Lvjun Liu, Qi Ouyang, Yan Zhao, Ge Lin, Liang Hu, Wen Li
Skin fibroblasts were obtained from a male patient diagnosed with retinoblastoma (RB) carrying a c.2663G>A mutation in the 25 exon of RB1 gene. RB-iPS cells was generated via delivered four reprogramming factors (OCT4, SOX2, NANOG and LIN28) into these skin fibroblasts. The RB-iPS cells retained the RB1 heterozygous mutation resulted in a truncated RB1 mRNA. Characteristic tests proved that the iPSC line presented typical markers of pluripotency and had the capability to form the three germ layers in vitro...
September 2016: Stem Cell Research
https://www.readbyqxmd.com/read/27874035/p53-isoform-%C3%AE-133p53-promotes-efficiency-of-induced-pluripotent-stem-cells-and-ensures-genomic-integrity-during-reprogramming
#14
Lu Gong, Xiao Pan, Haide Chen, Lingjun Rao, Yelin Zeng, Honghui Hang, Jinrong Peng, Lei Xiao, Jun Chen
Human induced pluripotent stem (iPS) cells have great potential in regenerative medicine, but this depends on the integrity of their genomes. iPS cells have been found to contain a large number of de novo genetic alterations due to DNA damage response during reprogramming. Thus, to maintain the genetic stability of iPS cells is an important goal in iPS cell technology. DNA damage response can trigger tumor suppressor p53 activation, which ensures genome integrity of reprogramming cells by inducing apoptosis and senescence...
November 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27865736/ips-derived-neural-progenitor-cells-from-ppms-patients-reveal-defect-in-myelin-injury-response
#15
Alexandra M Nicaise, Erin Banda, Rosa M Guzzo, Kristen Russomanno, Wanda Castro-Borrero, Cory M Willis, Kasey M Johnson, Albert C Lo, Stephen J Crocker
Primary progressive multiple sclerosis (PPMS) is a chronic demyelinating disease of the central nervous system (CNS) currently lacking any effective treatment. Promoting endogenous brain repair offers a potential strategy to halt and possibly restore neurologic function in PPMS. To understand how the microenvironment within white matter lesions plays a role in repair we have focused on neural progenitor cells (NPCs) since these are found in lesions in PPMS and have been found to influence oligodendrocyte progenitor cell maturation (OPCs)...
November 16, 2016: Experimental Neurology
https://www.readbyqxmd.com/read/27864336/bmp4-promotes-mouse-ips-cell-differentiation-to-male-germ-cells-via-smad1-5-gata4-id1-and-id2
#16
Shi Yang, Qingqing Yuan, Minghui Niu, Jingmei Hou, Zijue Zhu, Min Sun, Zheng Li, Zuping He
Generation of male germ cells from pluripotent cells could provide male gametes for treating male infertility and offer an ideal model for unveiling molecular mechanisms of spermatogenesis. However, the influence and exact molecular mechanisms, especially downstream effectors of BMP4 signaling pathways, in male germ cell differentiation of the induce pluripotent stem (iPS) cells, remain unknown. This study was designed to explore the role and mechanism of BMP4 signaling in the differentiation of mouse induced pluripotent stem (iPS) cells to male germ cells...
November 18, 2016: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/27856558/human-polymorphisms-in-nicotinic-receptors-a-functional-analysis-in-ips-derived-dopaminergic-neurons
#17
Cristina Deflorio, Stéphane Blanchard, Maria Carla Carisì, Delphine Bohl, Uwe Maskos
Tobacco smoking is a public health problem, with ∼5 million deaths per year, representing a heavy burden for many countries. No effective therapeutic strategies are currently available for nicotine addiction, and it is therefore crucial to understand the etiological and pathophysiological factors contributing to this addiction. The neuronal α5 nicotinic acetylcholine receptor (nAChR) subunit is critically involved in nicotine dependence. In particular, the human polymorphism α5D398N corresponds to the strongest correlation with nicotine dependence risk found to date in occidental populations, according to meta-analysis of genome-wide association studies...
November 17, 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/27856246/reprogramming-of-retinoblastoma-cancer-cells-into-cancer-stem-cells
#18
Fengming Yue, Kanji Hirashima, Daihachiro Tomotsune, Sakiko Takizawa-Shirasawa, Tadayuki Yokoyama, Katsunori Sasaki
Retinoblastoma is the most common intraocular malignancy in pediatric patients. It develops rapidly in the retina and can be fatal if not treated promptly. It has been proposed that a small population of cancer cells, termed cancer stem cells (CSCs), initiate tumorigenesis from immature tissue stem cells or progenitor cells. Reprogramming technology, which can convert mature cells into pluripotent stem cells (iPS), provides the possibility of transducing malignant cancer cells back to CSCs, a type of early stage of cancer...
November 14, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27847820/autophagy-promoted-the-degradation-of-mutant-atxn3-in-neurally-differentiated-spinocerebellar-ataxia-3-human-induced-pluripotent-stem-cells
#19
Zhanhui Ou, Min Luo, Xiaohua Niu, Yuchang Chen, Yingjun Xie, Wenyin He, Bing Song, Yexing Xian, Di Fan, Shuming OuYang, Xiaofang Sun
Spinocerebellar ataxia-3 (SCA3) is the most common dominant inherited ataxia worldwide and is caused by an unstable CAG trinucleotide expansion mutation within the ATXN3 gene, resulting in an expanded polyglutamine tract within the ATXN3 protein. Many in vitro studies have examined the role of autophagy in neurodegenerative disorders, including SCA3, using transfection models with expression of pathogenic proteins in normal cells. In the current study, we aimed to develop an improved model for studying SCA3 in vitro using patient-derived cells...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27837558/menstrual-blood-derived-stem-cells-in-vitro-and-in-vivo-characterization-of-functional-effects
#20
Maria Carolina Oliveira Rodrigues, Trenton Lippert, Hung Nguyen, Sussannah Kaelber, Paul R Sanberg, Cesar V Borlongan
Accumulating evidence has demonstrated that menstrual blood stands as a viable source of stem cells. Menstrual blood-derived stem cells (MenSCs) are morphologically and functionally similar to cells directly extracted from the endometrium, and present dual expression of mesenchymal and embryonic cell markers, thus becoming interesting tools for regenerative medicine. Functional reports show higher proliferative and self-renewal capacities than bone marrow-derived stem cells, as well as successful differentiation into hepatocyte-like cells, glial-like cells, endometrial stroma-like cells, among others...
2016: Advances in Experimental Medicine and Biology
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