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https://www.readbyqxmd.com/read/28109162/odontoblastic-differentiation-of-dental-pulp-stem-cells-from-healthy-and-carious-teeth-on-an-original-pcl-based-3d-scaffold
#1
A Louvrier, E Euvrard, L Nicod, G Rolin, F Gindraux, L Pazart, C Houdayer, P Y Risold, F Meyer, C Meyer
AIMS: To isolate and characterize Dental Pulp Stem Cells (DPSCs) obtained from carious and healthy mature teeth extracted when conservative treatment was not possible or for orthodontic reasons; to evaluate the ability of DPSCs to colonize, proliferate, and differentiate into functional odontoblast-like cells when cultured onto a polycaprolactone cone made by jet-spraying and prototyped into a design similar to a gutta-percha cone. METHODOLOGY: DPSCs were obtained from 9 carious and 12 healthy mature teeth...
January 21, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28109062/fibroblasts-as-maestros-orchestrating-tissue-regeneration
#2
REVIEW
Raquel Costa-Almeida, Raquel Soares, Pedro L Granja
Fibroblasts constitute a dynamic and versatile population of cells of mesenchymal origin, implicated in both regenerative strategies and pathological conditions. Despite being frequently associated to disease development, particularly through the establishment of fibrotic tissue, fibroblasts hold great potential for tissue engineering and regenerative medicine applications. They are responsible for synthesizing and depositing extracellular matrix components, allowing other cells to settle and migrate along a three-dimensional support and thereby generating an organ-specific architecture...
January 20, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28109013/investigation-of-genetic-defects-in-severe-combined-immunodeficiency-patients-from-turkey-by-targeted-sequencing
#3
Baran Erman, Ivan Bilic, Tatjana Hirschmugl, Elisabeth Salzer, Heidrun Boztug, Özden Sanal, Deniz Çağdaş Ayvaz, Ilhan Tezcan, Kaan Boztug
Primary immunodeficiencies (PIDs) represent a large group of disorders with an increased susceptibility to infections. Severe combined immunodeficiency (SCID) is the most severe form of primary immunodeficiencies (PIDs) with marked T-cell lymphopenia. Investigation of the genetic etiology using classical Sanger sequencing is associated with considerable diagnostic delay. We here established a custom-designed, next generation sequencing-based panel to efficiently identify disease-causing genetic defects in PID patients and applied this method in SCID patients of Turkish origin with previously undefined genetic etiology...
January 21, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28108843/ets-transcription-factors-etv2-and-fli1b-are-required-for-tumor-angiogenesis
#4
Kristina Baltrunaite, Michael P Craig, Sharina Palencia Desai, Praneet Chaturvedi, Ram Naresh Pandey, Rashmi S Hegde, Saulius Sumanas
ETS transcription factor ETV2/Etsrp functions as a key regulator of embryonic vascular development in multiple vertebrates. However, its role in pathological vascular development has not been previously investigated. To analyze its role in tumor angiogenesis, we utilized a zebrafish xenotransplantation model. Using a photoconvertible kdrl:NLS-KikGR line, we demonstrated that all tumor vessels originate from the existing embryonic vasculature by the mechanism of angiogenesis. Xenotransplantation of mouse B16 melanoma cells resulted in a significant increase in expression of the ETS transcription factors etv2 and fli1b expression throughout the embryonic vasculature...
January 20, 2017: Angiogenesis
https://www.readbyqxmd.com/read/28108500/ophthalmic-artery-occlusion-after-pipeline-embolization-device-placement-with-reconstitution-of-flow-via-an-endoleak-a-report-of-two-cases
#5
Michael L Adix, Ian A Kaminsky, In Sup Choi
The Pipeline Embolization Device (PED) is a flow diverting stent used in the treatment of a wide variety of intracranial aneurysms. The device differs from traditional stents used in stent-assisted coil embolization in that it has a tighter lattice structure with smaller cell sizes designed specifically to disrupt blood flow into aneurysms rather than only to retain coils within aneurysms. While the PED has been shown to be safe and effective, it has a unique risk profile that includes side branch and perforator vessel occlusion...
January 20, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28108045/a-comparison-of-3-on-line-nomograms-with-the-detection-of-primary-circulating-prostate-cells-to-predict-prostate-cancer-at-initial-biopsy
#6
N P Murray, C Fuentealba, E Reyes, O Jacob
INTRODUCTION: The use of nomograms which include the PSA may improve the predictive power of obtaining a prostate biopsy (PB) positive for cancer. We compare the use of three on-line nomagrams with the detection of primary malignant circulating prostate cells (CPCs) to predict the results of an initial PB in men with suspicion of prostate cancer. METHODS AND PATIENTS: Consecutive men with suspicion of prostate cancer underwent a 12 core TRUS prostate biopsy; age, total serum PSA, percent free PSA, family history, ethnic origin and prostate ultrasound results were used for risk assessment using the online nomograms...
January 17, 2017: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/28107610/tonsil-derived-mesenchymal-stem-cells-t-mscs-prevent-th17-mediated-autoimmune-response-via-regulation-of-the-programmed-death-1-programmed-death-ligand-1-pd-1-pd-l1-pathway
#7
Ji-Yon Kim, Minhwa Park, Yu-Hee Kim, Kyung-Ha Ryu, Kyung Ho Lee, Kyung-Ah Cho, So-Youn Woo
Our knowledge of the immunomodulatory role of mesenchymal stem cells (MSCs) in both the innate and adaptive immune systems has dramatically expanded, providing great promise for treating various autoimmune diseases. However, the contribution of MSCs to Th17 dominant immune disease, such as psoriasis and its underlying mechanism remains elusive. In this study, we demonstrated that human palatine tonsil-derived MSCs (T-MSCs) constitutively express both the membrane-bound and soluble forms of programmed death-ligand 1 (PD-L1), which enables T-MSCs to be distinguished from MSCs originating from other organs (i...
January 20, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28107513/the-zebrafish-anillin-egfp-reporter-marks-late-dividing-retinal-precursors-and-stem-cells-entering-neuronal-lineages
#8
Meret Cepero Malo, Anne-Laure Duchemin, Luca Guglielmi, Eva Patzel, Saadettin Sel, Gerd U Auffarth, Matthias Carl, Lucia Poggi
Monitoring cycling behaviours of stem and somatic cells in the living animal is a powerful tool to better understand tissue development and homeostasis. The tg(anillin:anillin-eGFP) transgenic line carries the full-length zebrafish F-actin binding protein Anillin fused to eGFP from a bacterial artificial chromosome (BAC) containing Anillin cis-regulatory sequences. Here we report the suitability of the Anillin-eGFP reporter as a direct indicator of cycling cells in the late embryonic and post-embryonic retina...
2017: PloS One
https://www.readbyqxmd.com/read/28107433/investigation-of-cross-contamination-and-misidentification-of-278-widely-used-tumor-cell-lines
#9
Yaqing Huang, Yuehong Liu, Congyi Zheng, Chao Shen
In recent years, biological research involving human cell lines has been rapidly developing in China. However, some of the cell lines are not authenticated before use. Therefore, misidentified and/or cross-contaminated cell lines are unfortunately commonplace. In this study, we present a comprehensive investigation of cross-contamination and misidentification for a panel of 278 cell lines from 28 institutes in China by using short tandem repeat profiling method. By comparing the DNA profiles with the cell bank databases of ATCC and DSMZ, a total of 46...
2017: PloS One
https://www.readbyqxmd.com/read/28107420/the-polyherbal-wattana-formula-displays-anti-amyloidogenic-properties-by-increasing-%C3%AE-secretase-activities
#10
Htut Htut Htoo, Suveerawan Limsuvan, Onusa Thamsermsang, Jean-François Hernandez, Frédéric Checler, Piyarat Govitrapong, Narawut Pakaprot, Pravit Akarasereenont, Bruno Vincent
Alzheimer's disease is characterized by the deposition of insoluble amyloid-β peptides produced from the β-amyloid precursor protein (βAPP). Because α-secretase cleavage by ADAM10 and ADAM17 takes place in the middle of Aβ, its activation is considered as a promising anti-AD therapeutic track. Here we establish that the polyherbal Wattana formula (WNF) stimulates sAPPα production in cells of neuronal and non-neuronal origins through an increase of both ADAM10 and ADAM17 catalytic activities with no modification of BACE1 activity and expression...
2017: PloS One
https://www.readbyqxmd.com/read/28107375/narcolepsy-type-1-is-associated-with-a-systemic-increase-and-activation-of-regulatory-t-cells-and-with-a-systemic-activation-of-global-t-cells
#11
Michel Lecendreux, Guillaume Churlaud, Fabien Pitoiset, Armelle Regnault, Tu Anh Tran, Roland Liblau, David Klatzmann, Michelle Rosenzwajg
Narcolepsy is a rare neurologic disorder characterized by excessive daytime sleepiness, cataplexy and disturbed nocturnal sleep patterns. Narcolepsy type 1 (NT1) has been shown to result from a selective loss of hypothalamic hypocretin-secreting neurons with patients typically showing low CSF-hypocretin levels (<110 pg/ml). This specific loss of hypocretin and the strong association with the HLA-DQB1*06:02 allele led to the hypothesis that NT1 could be an immune-mediated pathology. Moreover, susceptibility to NT1 has recently been associated with several pathogens, particularly with influenza A H1N1 virus either through infection or vaccination...
2017: PloS One
https://www.readbyqxmd.com/read/28107368/multi-channel-optical-coherence-elastography-using-relative-and-absolute-shear-wave-time-of-flight
#12
Eli Elyas, Alex Grimwood, Janine T Erler, Simon P Robinson, Thomas R Cox, Daniel Woods, Peter Clowes, Ramona De Luca, Franco Marinozzi, Jérémie Fromageau, Jeffrey C Bamber
Elastography, the imaging of elastic properties of soft tissues, is well developed for macroscopic clinical imaging of soft tissues and can provide useful information about various pathological processes which is complementary to that provided by the original modality. Scaling down of this technique should ply the field of cellular biology with valuable information with regard to elastic properties of cells and their environment. This paper evaluates the potential to develop such a tool by modifying a commercial optical coherence tomography (OCT) device to measure the speed of shear waves propagating in a three-dimensional (3D) medium...
2017: PloS One
https://www.readbyqxmd.com/read/28107222/romidepsin-induced-hiv-1-viremia-during-effective-art-contains-identical-viral-sequences-with-few-deleterious-mutations
#13
Anni Winckelmann, Kirston Barton, Bonnie Hiener, Timothy E Schlub, Wei Shao, Thomas A Rasmussen, Lars Østergaard, Ole S Søgaard, Martin Tolstrup, Sarah Palmer
OBJECTIVE: To investigate the origin of the HIV-1 viremia induced by the latency-reversing agent romidepsin. DESIGN: Six individuals on suppressive antiretroviral therapy received romidepsin administered intravenously once weekly for three consecutive weeks. CD4+ T-cells were obtained at baseline, following the second and third romidepsin infusion, and 10 weeks after the final romidepsin treatment. METHODS: Single-genome sequencing of the env region was used to genetically characterize the virus from proviral DNA, the transcribed cell-associated RNA and the plasma RNA pool...
January 19, 2017: AIDS
https://www.readbyqxmd.com/read/28107184/tunneling-nanotubes-promote-intercellular-mitochondria-transfer-followed-by-increased-invasiveness-in-bladder-cancer-cells
#14
Jinjin Lu, Xiufen Zheng, Fan Li, Yang Yu, Zhong Chen, Zheng Liu, Zhihua Wang, Hua Xu, Weimin Yang
Intercellular transfer of organelles via tunneling nanotubes (TNTs) is a novel means of cell-to-cell communication. Here we demonstrate the existence of TNTs between co-cultured RT4 and T24 bladder cancer cells using light microscopy, fluorescence imaging, and scanning electron microscopy (SEM). Spontaneous unidirectional transfer of mitochondria from T24 to RT4 cells was detected using fluorescence imaging and flow cytometry. The distribution of mitochondria migrated from T24 cells was in good agreement with the original mitochondria in RT4 cells, which may imply mitochondrial fusion...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28107095/chibby1-knockdown-promotes-mesenchymal-to-epithelial-transition-like-changes
#15
Victoria Fischer, Michael Wong, Feng-Qian Li, Ken-Ichi Takemaru
Chibby1 (Cby1) was originally isolated as a binding partner for β-catenin, a dual function protein in cell-cell adhesion and in canonical Wnt signaling. The canonical Wnt/β-catenin pathway is dysregulated in various diseases including cancer, most notably of the gastrointestinal origin. To investigate the role of Cby1 in colorectal tumorigenesis, we generated stable Cby1-knockdown (KD) SW480 colon cancer cells. Unexpectedly, we found that Cby1 KD induces mesenchymal-to-epithelial transition (MET)-like changes in SW480 as well as in HEK293 cells...
January 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28107040/effects-of-malnutrition-on-neutrophil-mononuclear-cell-apoptotic-functions-in-children-with-acute-lymphoblastic-leukemia
#16
Fatma Betul Cakir, Su Gülsün Berrak, Gonul Aydogan, Aysin Tulunay, Cetin Timur, Cengiz Canpolat, Emel Eksioglu Demiralp
BACKGROUND: Recent studies claim that apoptosis may explain immune dysfunction observed in malnutrition. OBJECTIVE: The objective of this study was to determine the effect of malnutrition on apoptotic functions of phagocytic cells in acute lymphoblastic leukemia (ALL). MATERIALS AND METHODS: Twenty-eight ALL patients (13 with malnutrition) and thirty controls were enrolled. Neutrophil and mononuclear cell apoptosis of ALL patients and the control group were studied on admission before chemotherapy and repeated at a minimum of three months after induction of chemotherapy or when the nutritional status of leukemic children improved...
January 20, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28106103/sox2-and-rb1-in-esophageal-small-cell-carcinoma-their-possible-involvement-in-pathogenesis
#17
Hirotaka Ishida, Atsuko Kasajima, Takashi Kamei, Tsuyoshi Miura, Naomi Oka, Samaneh Yazdani, Yohei Ozawa, Fumiyoshi Fujishima, Akira Sakurada, Yasuhiro Nakamura, Yoichi Tanaka, Masafumi Kurosumi, Yuichi Ishikawa, Yoshinori Okada, Noriaki Ohuchi, Hironobu Sasano
Clinicopathological features and pathogenesis of esophageal small-cell carcinoma remain unclear. We hypothesized common cellular origin and pathogenesis in small-cell carcinoma of esophagus and lung associated with SOX2 overexpression and loss of Rb1. Expression of squamous-basal markers (CK5/6 and p40), glandular markers (CK18 and CEA), SOX2, and Rb1 were evaluated in 15 esophageal small-cell carcinomas, 46 poorly differentiated squamous cell carcinomas, and 88 small-cell lung carcinoma, as well as 16 embryonic esophagus...
January 20, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28106069/identification-of-novel-cellular-clusters-define-a-specialized-area-in-the-cerebellar-periventricular-zone
#18
María Alejandra González-González, Gabriela B Gómez-González, Marymar Becerra-González, Ataúlfo Martínez-Torres
The periventricular zone of cerebellum is a germinative niche during the embryonic development, nevertheless its structural organization and functional implications in adult have not been widely studied. Here we disclose the presence of two novel clusters of cells in that area. The first one was named the subventricular cellular cluster (SVCC) and is composed of cells that express glial and neuronal markers. The second was named the ventromedial cord (VMC) and appears as a streak of biciliated cells with microvillosities facing the ventricle, that includes GFAP(+) and nestin(+) cells organized along the periventricular vasculature...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105976/early-subretinal-allograft-rejection-is-characterized-by-innate-immune-activity
#19
Kevin P, Toby M, Deborah M, Cliona O Farrelly, David J
<p>Successful subretinal transplantation is limited by considerable early graft loss, despite pharmacological suppression of adaptive immunity. We postulated that early innate immune activity is a dominant factor in determining graft survival and chose a non-immunosuppressed mouse model of retinal pigment epithelial (RPE) cell transplantation to explore this.</p><p>Expression of almost all measured cytokines by DH01 RPE cells increased significantly following graft preparation and the neutrophil chemoattractant, KC/GRO/CINC, was most significantly increased...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105947/superpixel-based-segmentation-of-muscle-fibers-in-multi-channel-microscopy
#20
Binh P Nguyen, Hans Heemskerk, Peter T C So, Lisa Tucker-Kellogg
BACKGROUND: Confetti fluorescence and other multi-color genetic labelling strategies are useful for observing stem cell regeneration and for other problems of cell lineage tracing. One difficulty of such strategies is segmenting the cell boundaries, which is a very different problem from segmenting color images from the real world. This paper addresses the difficulties and presents a superpixel-based framework for segmentation of regenerated muscle fibers in mice. RESULTS: We propose to integrate an edge detector into a superpixel algorithm and customize the method for multi-channel images...
December 5, 2016: BMC Systems Biology
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