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https://www.readbyqxmd.com/read/29783122/bix-01294-promotes-the-differentiation-of-adipose-mesenchymal-stem-cells-into-adipocytes-and-neural-cells-in-arbas-cashmere-goats
#1
Qing Wang, Xiao Wang, Defang Lai, Jin Deng, Zhuang Hou, Hao Liang, Dongjun Liu
Chromatin remodeling plays an essential role in regulating gene transcription. BIX-01294 is a specific inhibitor of histone methyltransferase G9a, which is responsible for methylation of histone H3 lysine 9 (H3K9) that can also regulate DNA methylation and chromatin remodeling. The purpose of this study was to investigate the effects of BIX-01294 on the potential of goat adipose derived stem cells (gADSCs) to differentiate into adipocytes and neural cells. To accomplish this, BIX-01294 was used to treat gADSCs for 24 h, and the global level of DNA methylation as well as the expression of genes related to cell proliferation, apoptosis and pluripotency were detected...
May 14, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29778081/molecular-aspect-of-silver-nanoparticles-regulated-embryonic-development-in-zebrafish-danio-rerio-by-oct-4-expression
#2
Biplab Sarkar, Suresh K Verma, Javed Akhtar, Surya Prakash Netam, Sanjay Kr Gupta, Pritam Kumar Panda, Koel Mukherjee
With the enhancement of commercial manifestation of silver nanoparticles, concerned has risen on their accumulation in aquatic system and consequent effects on fish development and metabolism. In this study, experiments were conducted to assess the impacts of silver nanoparticles on early life cycles of fish considering Zebrafish (Danio rerio) as experimental model. Silver nanoparticles were synthesized through chemical reduction method and characterized through UV-visible spectroscopy, dynamic light scattering (DLS), and HR-TEM...
May 4, 2018: Chemosphere
https://www.readbyqxmd.com/read/29775627/acquisition-of-tumorigenic-potential-and-therapeutic-resistance-in-cd133-subpopulation-of-prostate-cancer-cells-exhibiting-stem-cell-like-characteristics
#3
Rajnee Kanwal, Sanjeev Shukla, Ethan Walker, Sanjay Gupta
The role of CD133 (Prominin-1) as a cancer stem cell marker may be useful for therapeutic approaches and prognostication in prostate cancer patients. We investigated the stem-cell-related function and biological features of a subpopulation of CD133+ cells isolated from established primary human prostate cancer cell lines. The CD133+ cells sorted from human prostate cancer 22Rv1 exhibited high clonogenic and tumorigenic capabilities, sphere forming capacity and serially reinitiated transplantable tumors in NOD-SCID mice...
May 15, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29770522/conclusive-evidence-for-oct4-transcription-in-human-cancer-cell-lines-possible-role-of-a-small-oct4-positive-cancer-cell-population
#4
Tomoyuki Miyamoto, Nobuhiko Mizuno, Mitsuko Kosaka, Yoko Fujitani, Eiji Ohno, Aiji Ohtsuka
The role of octamer-binding transcription factor 4 (OCT4) in human cancer is still debated. Although many studies have been published on human OCT4, determining which of the findings are accurate or which are false-positives is currently challenging. We thus developed the most reliable method to date for highly specific and comprehensive detection of genuine OCT4-transcript variants without false-positive results. Our results provided clear evidence that the transcripts of OCT4A, OCT4B, OCT4B1 and other novel splicing variants are indeed present in many cancer cell lines, but are rarely detected in normal tissue-derived differentiated cells...
May 17, 2018: Stem Cells
https://www.readbyqxmd.com/read/29767511/low-dose-arsenic-trioxide-modulates-the-differentiation-of-mouse-embryonic-stem-cells
#5
Wenlin Yuan, Jun Chen, Hongren Huang, Zhihui Cai, Qinjie Ling, Feng Huang, Zhi Huang
Arsenic (As) is a well-known environmental pollutant,while arsenic trioxide (ATO) has been proven to be an effective treatment for acute promyelocytic leukemia, however, the mechanism underlying its dual effects is not fully understood.Embryonic stem cells (ESCs) appear properties of stemness and serve as a popular model to investigate epigenetic modifiers includingenvironmental pollutants.Herein, the effect of low dose ATO on differentiation were evaluatedin vitro using a mouse ESCs (mESCs) cell line, CGR8...
May 16, 2018: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/29765418/isolation-and-characterisation-of-mesenchymal-stem-cells-from-rat-bone-marrow-and-the-endosteal-niche-a-comparative-study
#6
Norhayati Yusop, Paul Battersby, Amr Alraies, Alastair J Sloan, Ryan Moseley, Rachel J Waddington
Within bone, mesenchymal stromal cells (MSCs) exist within the bone marrow stroma (BM-MSC) and the endosteal niche, as cells lining compact bone (CB-MSCs). This study isolated and characterised heterogeneous MSC populations from each niche and subsequently investigated the effects of extensive cell expansion, analysing population doublings (PDs)/cellular senescence, colony-forming efficiencies (CFEs), MSC cell marker expression, and osteogenic/adipogenic differentiation. CB-MSCs and BM-MSCs demonstrated similar morphologies and PDs, reaching 100 PDs...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29763507/effect-of-titanium-surfaces-on-the-osteogenic-differentiation-of-human-adipose-derived-stem-cells
#7
Diogo Godoy Zanicotti, Warwick John Duncan, Gregory John Seymour, Dawn Elizabeth Coates
PURPOSE: To investigate whether human adipose-derived stem cells will form a functional bone-like matrix on titanium substrates. The behavior of human adipose-derived stem cells was examined when grown in either serum-free, xeno-free stem cell growth medium or osteogenic differentiation medium and cultured on either machined titanium (MTi) or on roughened alumina-blasted titanium (ABTi) discs. MATERIALS AND METHODS: Cellular proliferation, extracellular mineralized matrix production, osteogenic-related protein production (RUNX2 and osteocalcin), and gene expression for pluripotency and self-renewal (TERT and OCT4) and osteogenic-related (MSX2, RUNX2, and BGLAP) genes were performed...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29762837/stemness-related-changes-of-cd133-cells-in-nasopharyngeal-carcinoma-after-x-ray-radiation-at-the-median-lethal-dose
#8
W-W Dai, S Liu, X-J Liu, Z-P Peng
OBJECTIVE: To investigate the effect of X-ray radiation at the median lethal dose (LD50) on the outcome of a cluster of differentiation 133 (CD133)- cells in nasopharyngeal carcinoma. MATERIALS AND METHODS: CD133- cells were obtained from human nasopharyngeal carcinoma cells (CNE-1 and CNE-2) based on CD133-labeled fluorescence-activated cell sorting (FACS) and magnetic-activated cell sorting (MACS), respectively. Changes in invasion ability and in-vivo tumorigenicity of CD133- cells before and after X-ray radiation at LD50 were observed...
April 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29761897/chronic-ethanol-exposure-of-human-pancreatic-normal-ductal-epithelial-cells-induces-cancer-stem-cell-phenotype-through-satb2
#9
Wei Yu, Yuming Ma, Sharmila Shankar, Rakesh K Srivastava
The incidence of pancreatic cancer is on the rise. Risk factors for pancreatic cancer include alcohol toxicity and metabolic conditions such as obesity, hypertension, dyslipidaemia, insulin resistance and type 2 diabetes. However, the molecular mechanism by which chronic alcohol consumption contributes to pancreatic cancer is not well understood. The purpose of the study was to demonstrate the effects of long-term chronic ethanol exposure on the transformation of human pancreatic normal ductal epithelial (HPNE) cells...
May 15, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29761584/reduction-of-fibrosis-and-scar-formation-by-partial-reprogramming-in-vivo
#10
Markus C Doeser, Hans R Schöler, Guangming Wu
Transient expression of the transcription factors OCT4, SOX2, KLF4 and C-MYC (OSKM) to induce partial reprogramming while avoiding the pluripotent state and teratoma formation has recently been discussed as a strategy for regenerating damaged tissues in vivo, whereby the impact of partial reprogramming on tissue repair remains to be elucidated. Here, we activated OSKM transcription factors in cutaneous wounds of OSKM-inducible transgenic mice and found that induction of OSKM factors in excisional wounds caused a diminished fibroblast transdifferentiation to myofibroblasts and wound contraction...
May 15, 2018: Stem Cells
https://www.readbyqxmd.com/read/29758200/microrna-299-3p-regulates-proliferation-migration-and-invasion-of-human-ovarian-cancer-cells-by-modulating-the-expression-of-oct4
#11
Ruiyan Zhao, Qiyong Liu, Chunxiang Lou
Ovarian cancer is among the most prevalent and lethal types of cancers in women. Several factors such as late diagnosis, unavailability of the reliable biomarkers, frequent relapses and dearth of efficient therapeutic targets form bottleneck in the treatment of ovarian cancers. In this study we investigated the potential of less studied miR-299-3p as the therapeutic target for the treatment of ovarian cancer. The results of the present investigation revealed that miR-299 is significantly upregulated in the ovarian cancers and suppression of its expression inhibits the proliferation by induction of apoptosis as well suppresses migration and invasion of the SKOV3 cancers cells...
May 11, 2018: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29753846/role-of-hnf1%C3%AE-in-the-differential-diagnosis-from-other-germ-cell-tumors
#12
Anne-Laure Rougemont, Jean-Christophe Tille
Identification of the yolk sac tumor (YST) component in germ cell tumors (GCT) may prove challenging, and highly sensitive and specific immunohistochemical markers are still lacking. Preliminary data from the literature suggest that HNF1β may represent a sensitive marker of YST. The specificity of HNF1β has not been addressed in GCT. A cohort of 49 YST specimens from 45 patients was designed, occurring either as pure tumors, or as a component of a mixed GCT. Immunohistochemistry was conducted on whole tumor sections using HNF1β...
May 10, 2018: Human Pathology
https://www.readbyqxmd.com/read/29753274/blood-derived-integration-free-ips-cell-line-ukbi011-a-from-a-diagnosed-male-alzheimer-s-disease-patient-with-apoe-%C3%A9-4-%C3%A9-4-genotype
#13
Michael Peitz, Tamara Bechler, Catrin Cornelia Thiele, Monika Veltel, Melanie Bloschies, Klaus Fliessbach, Alfredo Ramirez, Oliver Brüstle
Alzheimer's disease (AD) is most the frequent neurodegenerative disease, and the APOE ε4 allele is the most prominent risk factor for late-onset AD. Here, we present an iPSC line generated from peripheral blood cells of a male AD patient employing Sendai virus vectors encoding the transcription factors OCT4, SOX2, KLF4 and c-MYC. The characterized iPSC line expresses typical human pluripotency markers and shows differentiation into all three germ layers, complete reprogramming vector clearance, a normal SNP genotype and maintenance of the APOE ε4/ε4 allele...
April 23, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29753273/generation-of-an-induced-pluripotent-stem-cell-line-from-a-patient-with-non-syndromic-cln3-associated-retinal-degeneration-and-a-coisogenic-control-line
#14
Xiao Zhang, Dan Zhang, Shang-Chih Chen, Tina Lamey, Jennifer A Thompson, Terri McLaren, John N De Roach, Fred K Chen, Samuel McLenachan
We report the generation of the human iPSC line LEIi004-A from a patient with late-onset non-syndromic retinitis pigmentosa caused by compound heterozygous mutations in the CLN3 gene. Reprogramming of primary dermal fibroblasts was performed using episomal plasmids containing OCT4, SOX2, KLF4, L-MYC, LIN28, shRNA for p53 and mir302/367 microRNA. To create a coisogenic control line, one CLN3 variant was corrected in the patient-iPSC using CRISPR/Cas9 gene editing to generate the iPSC line LEIi004-A-1.
May 1, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29750821/generation-of-hepatocyte-and-endocrine-pancreatic-like-cells-from-human-induced-endodermal-progenitor-cells
#15
Rangarajan Sambathkumar, Renate Akkerman, Sumitava Dastidar, Philip Roelandt, Manoj Kumar, Manmohan Bajaj, Ana Rita Mestre Rosa, Nicky Helsen, Veerle Vanslembrouck, Eric Kalo, Satish Khurana, Jos Laureys, Conny Gysemans, Marijke M Faas, Paul de Vos, Catherine M Verfaillie
Multipotent Adult Progenitor Cells (MAPCs) are one potential stem cell source to generate functional hepatocytes or β-cells. However, human MAPCs have less plasticity than pluripotent stem cells (PSCs), as their ability to generate endodermal cells is not robust. Here we studied the role of 14 transcription factors (TFs) in reprogramming MAPCs to induced endodermal progenitor cells (iENDO cells), defined as cells that can be long-term expanded and differentiated to both hepatocyte- and endocrine pancreatic-like cells...
2018: PloS One
https://www.readbyqxmd.com/read/29749438/oct4-suppresses-ir%C3%A2-induced-premature-senescence-in-breast-cancer-cells-through-stat3-and-nf%C3%A2-%C3%AE%C2%BAb-mediated-il%C3%A2-24-production
#16
Jeong-Yub Kim, Jeong-Chul Kim, Ji-Yun Lee, Myung-Jin Park
Breast cancer stem cells (BCSCs) are a small subpopulation of breast cancer cells that have been proposed to be a primary cause of failure of therapies, including ionizing radiation (IR). Their embryonic stem-like signature is associated with poor clinical outcome. In the present study, the function of octamer-binding transcription factor 4 (Oct4), an embryonic stem cell factor, in the resistance of BCSCs to IR was investigated. Mammosphere cells exhibited increased expression of stemness-associated genes, including Oct4 and sex‑determining region Y‑box 2 (Sox2), and were more resistant to IR compared with serum-cultured monolayer cells...
May 2, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29744869/isolation-and-identification-of-chemotherapy-enriched-sphere-forming-cells-from-a-patient-with-gastric-cancer
#17
Vahid Bagheri, Bahram Memar, Ramezan Behzadi, Mohsen Aliakbarian, Ali Jangjoo, Mostafa Mehrabi Bahar, Samaneh Talebi, Mehran Gholamin, Mohammad R Abbaszadegan
Gastric cancer (GC) is the third and fifth cause of cancer-associated mortality for men and women throughout the world, respectively. Despite the use of surgery and chemotherapy for GC therapy, there are no efficient therapeutic protocols for it to date. Cancer stem cells (CSCs) due to their pivotal role in tumor initiation, growth, progression, invasion, distant metastasis, recurrence and resistance to anticancer drugs are very appealing targets for cancer therapies. Here, we isolated and identified CSCs from a chemotherapy-treated patient...
May 10, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29740477/determination-of-oocyte-manipulation-zygote-manipulation-and-genome-reprogramming-effects-on-the-transcriptomes-of-bovine-blastocysts
#18
Byungkuk Min, Jung S Park, Yong-Kook Kang
Somatic cell nuclear transfer (scNT) embryos suffer from damage caused by micro-operation (manipulation) and inefficient genome reprograming that hinder their normal development at different levels and in distinct ways. These two effects are inseparable in the nature of the scNT embryo, although methods to separately measure them are needed to improve scNT technology and evaluate incoming reprogramming tools. As an attempt to meet these demands, we made bovine sham nuclear-transfer (shNT) blastocysts, special embryos made with a standard nuclear-transfer procedure at the zygote stage, while retaining an intact genome...
2018: Frontiers in Genetics
https://www.readbyqxmd.com/read/29734353/knockdown-of-cdk2ap1-in-human-embryonic-stem-cells-reduces-the-threshold-of-differentiation
#19
Khaled N Alsayegh, Steven D Sheridan, Shilpa Iyer, Raj Raghavendra Rao
Recent studies have suggested a role for the Cyclin Dependent Kinase-2 Associated Protein 1 (CDK2AP1) in stem cell differentiation and self-renewal. In studies with mouse embryonic stem cells (mESCs) derived from generated mice embryos with targeted deletion of the Cdk2ap1 gene, CDK2AP1 was shown to be required for epigenetic silencing of Oct4 during differentiation, with deletion resulting in persistent self-renewal and reduced differentiation potential. Differentiation capacity was restored in these cells following the introduction of a non-phosphorylatible form of the retinoblastoma protein (pRb) or exogenous Cdk2ap1...
2018: PloS One
https://www.readbyqxmd.com/read/29727019/bitter-melon-juice-exerts-its-efficacy-against-pancreatic-cancer-via-targeting-both-bulk-and-cancer-stem-cells
#20
Deepanshi Dhar, Gagan Deep, Sushil Kumar, Michael F Wempe, Komal Raina, Chapla Agarwal, Rajesh Agarwal
Pancreatic cancer (PanC) is one of the deadliest malignancies worldwide and frontline treatment with gemcitabine becomes eventually ineffective due to increasing PanC resistance, suggesting additional approaches are needed to manage PanC. Recently, we have shown the efficacy of bitter melon juice (BMJ) against PanC cells, including those resistant to gemcitabine. Since cancer stem cells (CSCs) are actively involved in PanC initiation, progression, relapse and drug-resistance, here we assessed BMJ ability in targeting pancreatic cancer-associated cancer stem cells (PanC-CSCs)...
May 4, 2018: Molecular Carcinogenesis
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