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Transdifferentiation

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https://www.readbyqxmd.com/read/28646660/towards-understanding-transcriptional-networks-in-cellular-reprogramming
#1
REVIEW
Jaber Firas, Jose M Polo
Most of the knowledge we have on the molecular mechanisms of transcription factor mediated reprogramming comes from studies conducted in induced pluripotency. Recently however, a few studies investigated the mechanisms of cellular reprogramming in direct and indirect transdifferentiation, which allows us to explore whether shared parallel mechanisms can be drawn. Moreover, there are currently several computational tools that have been developed to predict and enhance the reprogramming process by reconstructing the transcriptional networks of reprogramming cells...
June 21, 2017: Current Opinion in Genetics & Development
https://www.readbyqxmd.com/read/28642484/mir-100-5p-inhibition-induces-apoptosis-in-dormant-prostate-cancer-cells-and-prevents-the-emergence-of-castration-resistant-prostate-cancer
#2
Noushin Nabavi, Nur Ridzwan Nur Saidy, Erik Venalainen, Anne Haegert, Abhijit Parolia, Hui Xue, Yuwei Wang, Rebecca Wu, Xin Dong, Colin Collins, Francesco Crea, Yuzhuo Wang
Carcinoma of the prostate is the most common cancer in men. Treatment of aggressive prostate cancer involves a regiment of radical prostectomy, radiation therapy, chemotherapy and hormonal therapy. Despite significant improvements in the last decade, the treatment of prostate cancer remains unsatisfactory, because a significant fraction of prostate cancers develop resistance to multiple treatments and become incurable. This prompts an urgent need to investigate the molecular mechanisms underlying the evolution of therapy-induced resistance of prostate cancer either in the form of castration-resistant prostate cancer (CRPC) or transdifferentiated neuroendocrine prostate cancer (NEPC)...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28634486/%C3%AE-cell-replacement-strategies-the-increasing-need-for-a-%C3%AE-cell-dogma
#3
REVIEW
Andhira Vieira, Noémie Druelle, Fabio Avolio, Tiziana Napolitano, Sergi Navarro-Sanz, Serena Silvano, Patrick Collombat
Type 1 diabetes is an auto-immune disease resulting in the loss of pancreatic β-cells and, consequently, in chronic hyperglycemia. Insulin supplementation allows diabetic patients to control their glycaemia quite efficiently, but treated patients still display an overall shortened life expectancy and an altered quality of life as compared to their healthy counterparts. In this context and due to the ever increasing number of diabetics, establishing alternative therapies has become a crucial research goal. Most current efforts therefore aim at generating fully functional insulin-secreting β-like cells using multiple approaches...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28634350/a-subset-of-cerebrovascular-pericytes-originates-from-mature-macrophages-in-the-very-early-phase-of-vascular-development-in-cns
#4
Seiji Yamamoto, Masashi Muramatsu, Erika Azuma, Masashi Ikutani, Yoshinori Nagai, Hiroshi Sagara, Bon-Nyeo Koo, Satomi Kita, Erin O'Donnell, Tsuyoshi Osawa, Hiroyuki Takahashi, Ken-Ichi Takano, Mitsuko Dohmoto, Michiya Sugimori, Isao Usui, Yasuhide Watanabe, Noboru Hatakeyama, Takahiro Iwamoto, Issei Komuro, Kiyoshi Takatsu, Kazuyuki Tobe, Shumpei Niida, Naoyuki Matsuda, Masabumi Shibuya, Masakiyo Sasahara
Pericytes are believed to originate from either mesenchymal or neural crest cells. It has recently been reported that pericytes play important roles in the central nervous system (CNS) by regulating blood-brain barrier homeostasis and blood flow at the capillary level. However, the origin of CNS microvascular pericytes and the mechanism of their recruitment remain unknown. Here, we show a new source of cerebrovascular pericytes during neurogenesis. In the CNS of embryonic day 10.5 mouse embryos, CD31(+)F4/80(+) hematopoietic lineage cells were observed in the avascular region around the dorsal midline of the developing midbrain...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28632033/overexpression-of-alk5-induces-human-tenon-s-capsule-fibroblasts-transdifferentiation-and-fibrosis-in-vitro
#5
Shu-Hao Fu, Hui-Ying Wang, Jia-Ying Zhang, Hui-Min Shi, Nan Zhang, Wen Ye, Yi-Qin Xiao
PURPOSE: To investigate the involvement of activin receptor-like kinase 5 (ALK5) in human Tenon's capsule fibroblasts (HTFs) transdifferentiation and fibrosis. METHODS: (1) Cultured HTFs were treated with transforming growth factor beta 1 (TGF-β1) at different concentrations for different durations, mRNA expression of ALK5 and plasminogen activator inhibitor-1 (PAI-1) was measured by quantitative polymerase chain reaction (PCR) while protein expression of ALK5, α-smooth muscle actin (α-SMA), and extracellular matrix deposition including fibronectin (FN) and collagen I (Col1) was assessed by western blot...
February 28, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28629798/proteomic-analysis-of-mesenchymal-to-schwann-cell-transdifferentiation
#6
Anup D Sharma, Jayme Wiederin, Metin Uz, Pawel Ciborowski, Surya K Mallapragada, Howard E Gendelman, Donald S Sakaguchi
While transplantation of Schwann cells facilitates axon regeneration, remyelination and repair after peripheral nerve injury clinical use is limited by cell bioavailability. We posit that such limitation in cell access can be overcome by the use of autologous bone-marrow derived mesenchymal stem cells (MSCs). As MSCs can transdifferentiate to Schwann cell-phenotypes and accelerate nerve regeneration we undertook proteomic evaluation of the cells to uncover the protein contents that affects Schwann cell formulation...
June 16, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28626343/anti-osm-antibody-inhibits-tubulointerstitial-lesion-in-a-murine-model-of-lupus-nephritis
#7
Qingjuan Liu, Yunxia Du, Kejun Li, Wei Zhang, Xiaojuan Feng, Jun Hao, Hongbo Li, Shuxia Liu
The purpose of this study was to investigate the role of oncostatin M (OSM) in tubulointerstitial lesion (TIL) in lupus nephritis (LN). We found that OSM was highly expressed in the renal tissue of LN mice. OSM is one of the interleukin-6 cytokine family members. In order to clarify the role and mechanism of OSM in LN, mice with LN were treated with anti-OSM antibody or isotype antibody. We evaluated the tubular epithelial-mesenchymal transdifferentiation (EMT) by detecting the E-cadherin, α-smooth muscle actin (α-SMA), and fibronectin (FN) expression...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28623647/expression-of-mtor-in-primary-pterygium-and-its-correlation-with-%C3%AE-smooth-muscle-actin
#8
Xin-Rong Zhao, Ming-Chang Zhang, Hua-Tao Xie, Nan Ji, Xiao-Qiong Ma
PURPOSE: Mammalian target of rapamycin (mTOR) is a serine/threonine protein kinase that has been shown to affect many cellular functions, such as cell growth, proliferation, and metabolism. However, there has been minimal focus on the expression of mTOR in pterygium. The purpose of this study was to investigate the expression of mTOR and the correlation between the levels of mTOR and α-smooth muscle actin (α-SMA, a marker of transdifferentiation) in pterygium. METHODS: Primary pterygium samples from 28 patients and normal conjunctival samples from 16 patients were surgically removed and analyzed...
June 14, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28617859/co-localization-of-acinar-markers-and-insulin-in-pancreatic-cells-of-subjects-with-type-2-diabetes
#9
Matilde Masini, Lorella Marselli, Eddy Himpe, Luisa Martino, Marco Bugliani, Mara Suleiman, Ugo Boggi, Franco Filipponi, Margherita Occhipinti, Luc Bouwens, Vincenzo De Tata, Piero Marchetti
To search for clues suggesting that beta cells may generate by transdifferentiation in humans, we assessed the presence of cells double positive for exocrine (amylase, carboxypeptidase A) and endocrine (insulin) markers in the pancreas of non-diabetic individuals (ND) and patients with type 2 diabetes (T2D). Samples from twelve ND and twelve matched T2D multiorgan donors were studied by electron microscopy, including amylase and insulin immunogold labeling; carboxypeptidase A immunofluorescence light microscopy assessment was also performed...
2017: PloS One
https://www.readbyqxmd.com/read/28615712/cell-specific-expression-of-aquaporin-5-aqp5-in-alveolar-epithelium-is-directed-by-gata6-sp1-via-histone-acetylation
#10
Per Flodby, Changgong Li, Yixin Liu, Hongjun Wang, Megan E Rieger, Parviz Minoo, Edward D Crandall, David K Ann, Zea Borok, Beiyun Zhou
Epigenetic regulation of differentiation-related genes is poorly understood. We previously reported that transcription factors GATA6 and Sp1 interact with and activate the rat proximal 358-bp promoter/enhancer (p358P/E) of lung alveolar epithelial type I (AT1) cell-specific gene aquaporin-5 (Aqp5). In this study, we found that histone deacetylase (HDAC) inhibitor suberoylanilide hydroxamic acid (SAHA) increased AQP5 expression and Sp1-mediated transcription of p358P/E. HDAC3 overexpression inhibited Sp1-mediated Aqp5 activation, while HDAC3 knockdown augmented AQP5 protein expression...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28610961/histone-acetylation-favours-the-cardiovascular-commitment-of-adipose-tissue-derived-stromal-cells
#11
Elena De Falco, Antonella Bordin, Eleonora Scaccia, Francesca Pagano, Mohsen Ibrahim, Leonardo Schirone, Francesco Angelini, Silvia Palmerio, Michele Madonna, Luca Fianchini, Isotta Chimenti, Sebastiano Sciarretta, Giacomo Frati
BACKGROUND: Although adipose stromal cells (ASCs) retain the ability to transdifferentiate at low rate towards the cardiac lineage, the potential mechanisms underlying such process have still to be elucidated. METHODS: Since chromatin state modifications are involved in several processes regulating the cellular cell fate commitment, we aimed at evaluating the role of histone protein acetylation in the cardiovascular-like transdifferentiation of ASCs. RESULTS: We found a clear increase of histone 3 acetylation status paralleled by a significant upregulation of cardiac TnI gene expression, in ASCs treated with the conditioned medium of primary cardiomyocyte cell cultures for 72h...
June 2, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28604806/prostaglandin-e2-inhibits-tr1-cell-differentiation-through-suppression-of-c-maf
#12
Kirsten Mary Hooper, Weimin Kong, Doina Ganea
Prostaglandin E2 (PGE2), a major lipid mediator abundant at inflammatory sites, acts as a proinflammatory agent in models of inflammatory/autoimmune diseases by promoting CD4 Th1/Th17 differentiation. Regulatory T cells, including the IL-10 producing Tr1 cells counterbalance the proinflammatory activity of effector Th1/Th17 cells. Tr1 cell differentiation and function are induced by IL-27, and depend primarily on sustained expression of c-Maf in addition to AhR and Blimp-1. In agreement with the in vivo proinflammatory role of PGE2, here we report for the first time that PGE2 inhibits IL-27-induced differentiation and IL-10 production of murine CD4+CD49b+LAG-3+Foxp3- Tr1 cells...
2017: PloS One
https://www.readbyqxmd.com/read/28602961/progress-and-biotechnological-prospects-in-fish-transgenesis
#13
REVIEW
Fernanda M P Tonelli, Samyra M S N Lacerda, Flávia C P Tonelli, Guilherme M J Costa, Luiz Renato de França, Rodrigo R Resende
The history of transgenesis is marked by milestones such as the development of cellular transdifferentiation, recombinant DNA, genetic modification of target cells, and finally, the generation of simpler genetically modified organisms (e.g. bacteria and mice). The first transgenic fish was developed in 1984, and since then, continuing technological advancements to improve gene transfer have led to more rapid, accurate, and efficient generation of transgenic animals. Among the established methods are microinjection, electroporation, lipofection, viral vectors, and gene targeting...
June 8, 2017: Biotechnology Advances
https://www.readbyqxmd.com/read/28598385/the-roles-of-long-non-protein-coding-rnas-in-osteo-adipogenic-lineage-commitment
#14
REVIEW
Hirotaka Yoshioka, Yuji Yoshiko
Osteoblasts and adipocytes share a common mesenchymal progenitor in the bone marrow. This implies that a reciprocal relationship exists between osteogenic and adipogenic differentiation. Further, cells of osteoblast lineage transdifferentiate into adipocytes under some circumstances. Dysregulation of osteo-adipogenic fate-determination leads to bone diseases such as osteoporosis, accompanied by an increase in bone marrow adipose tissue. Thus, the fine-tuning of osteo-adipogenesis is necessary for bone homeostasis...
June 9, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28593187/the-esophageal-squamous-epithelial-cell-still-a-reasonable-candidate-for-the%C3%A2-barrett-s-esophagus-cell-of%C3%A2-origin
#15
David H Wang
Barrett's esophagus is the metaplastic change of the squamous epithelium lining the distal esophagus into an intestinalized columnar epithelium that predisposes to esophageal adenocarcinoma development. The cell that gives rise to Barrett's esophagus has not been identified definitively, although several sources for the Barrett's esophagus cell of origin have been postulated. One possible source is a fully differentiated squamous epithelial cell or a squamous epithelial progenitor or stem cell native to the esophagus that, through molecular reprogramming, either transdifferentiation or transcommitment, could give rise to an intestinalized columnar cell...
July 2017: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28586241/unbiased-quantitation-of-atii-to-ati-cell-transdifferentiation-during-repair-after-lung-injury-in-mice
#16
Nicole L Jansing, Jazalle McClendon, Peter M Henson, Rubin M Tuder, Dallas M Hyde, Rachel L Zemans
The alveolar epithelium consists of squamous alveolar type (AT)I and cuboidal ATII cells. ATI cells cover 95-98% of the alveolar surface, thereby playing a critical role in barrier integrity, and are extremely thin, thus permitting efficient gas exchange. During lung injury, ATI cells die, resulting in increased epithelial permeability. ATII cells reepithelialize the alveolar surface via proliferation and transdifferentiation into ATI cells. Transdifferentiation is characterized by downregulation of ATII cell markers, upregulation of ATI cell markers, and cell spreading resulting in a change in morphology from cuboidal to squamous, thus restoring normal alveolar architecture and function...
June 6, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28585414/tissue-factor-variants-induce-monocyte-transformation-and-transdifferentiation-into-endothelial-cell-like-cells
#17
G Arderiu, S Espinosa, E Peña, J Crespo, R Aledo, V Y Bogdanov, L Badimon
BACKGROUND: Monocytes (Mo) increase neovascularization by releasing proangiogenic mediators and/or transdifferentiating into endothelial cell-like (ECL). Recently, we have reported that Mo-microvascular endothelial cells (mECs) crosstalk induces mEC-tissue factor (TF) expression and promotes angiogenesis. However, the effect of TF on Mo remains unknown. OBJECTIVE: Here, we analyzed whether TF might exert angiogenic effects by inducing transdifferentiation of Mo...
June 6, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28584084/logical-modeling-of-lymphoid-and-myeloid-cell-specification-and-transdifferentiation
#18
Samuel Collombet, Chris van Oevelen, Jose Luis Sardina Ortega, Wassim Abou-Jaoudé, Bruno Di Stefano, Morgane Thomas-Chollier, Thomas Graf, Denis Thieffry
Blood cells are derived from a common set of hematopoietic stem cells, which differentiate into more specific progenitors of the myeloid and lymphoid lineages, ultimately leading to differentiated cells. This developmental process is controlled by a complex regulatory network involving cytokines and their receptors, transcription factors, and chromatin remodelers. Using public data and data from our own molecular genetic experiments (quantitative PCR, Western blot, EMSA) or genome-wide assays (RNA-sequencing, ChIP-sequencing), we have assembled a comprehensive regulatory network encompassing the main transcription factors and signaling components involved in myeloid and lymphoid development...
June 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28583199/role-of-mesenchymal-stem-cells-their-derived-factors-and-extracellular-vesicles-in-liver-failure
#19
REVIEW
Jie Wang, Panpan Cen, Jiajia Chen, Linxiao Fan, Jun Li, Hongcui Cao, Lanjuan Li
Liver failure is a severe clinical syndrome with a poor prognosis. Mesenchymal stem cell (MSC) transplantation has emerged as a new intervention in treating liver failure. It is conventionally recognized that MSCs exert their therapeutic effect mainly through transdifferentiation. Recently, published articles have shown that MSCs work in liver failure by secreting trophic and immunomodulatory factors as well as extracellular vesicles (EVs) before transdifferentiation. In particular,MSC-derived EVs have shown similar curative effects as MSCs...
June 6, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28581487/emmprin-cd147-is-induced-by-c-ebp%C3%AE-and-is-differentially-expressed-in-alk-and-alk-anaplastic-large-cell-lymphoma
#20
Janine Schmidt, Irina Bonzheim, Julia Steinhilber, Ivonne A Montes-Mojarro, Carlos Ortiz-Hidalgo, Wolfram Klapper, Falko Fend, Leticia Quintanilla-Martínez
Anaplastic lymphoma kinase-positive (ALK+) anaplastic large-cell lymphoma (ALCL) is characterized by expression of oncogenic ALK fusion proteins due to the translocation t(2;5)(p23;q35) or variants. Although genotypically a T-cell lymphoma, ALK+ ALCL cells frequently show loss of T-cell-specific surface antigens and expression of monocytic markers. C/EBPβ, a transcription factor constitutively overexpressed in ALK+ ALCL cells, has been shown to play an important role in the activation and differentiation of macrophages and is furthermore capable of transdifferentiating B-cell and T-cell progenitors to macrophages in vitro...
June 5, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
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