نتایج جستجو برای: cell imprinted substrate

تعداد نتایج: 1800133  

2016
Marta Sanchez-Delgado Franck Court Enrique Vidal Jose Medrano Ana Monteagudo-Sánchez Alex Martin-Trujillo Chiharu Tayama Isabel Iglesias-Platas Ivanela Kondova Ronald Bontrop Maria Eugenia Poo-Llanillo Tomas Marques-Bonet Kazuhiko Nakabayashi Carlos Simón David Monk

Thousands of regions in gametes have opposing methylation profiles that are largely resolved during the post-fertilization epigenetic reprogramming. However some specific sequences associated with imprinted loci survive this demethylation process. Here we present the data describing the fate of germline-derived methylation in humans. With the exception of a few known paternally methylated germl...

2017
Xiaoshuang Tang Feng Li Jing Jia Chao Yang Wei Liu Ben Jin Xinyang Wang Ruixia Gao Dalin He Peng Guo

PURPOSE Androgen plays an important role in the progression of prostate cancer. In the present study, novel magnetic molecularly imprinted polymers (MMIPs) with good biocompatibility were produced for the selective separation and inhibition of testosterone in prostate cancer cells. MATERIALS AND METHODS MMIPs were prepared by using magnetic nanospheres, gelatin, and testosterone as the suppor...

Journal: :PLoS ONE 2009
John P. Hagan Brittany L. O'Neill Colin L. Stewart Serguei V. Kozlov Carlo M. Croce

BACKGROUND Genomic imprinting is an exception to Mendelian genetics in that imprinted genes are expressed monoallelically, dependent on parental origin. In mammals, imprinted genes are critical in numerous developmental and physiological processes. Aberrant imprinted gene expression is implicated in several diseases including Prader-Willi/Angelman syndromes and cancer. METHODOLOGY/PRINCIPAL F...

Journal: :Nanotechnology 2012
Ricky B Dunbar Thomas Pfadler Niraj N Lal Jeremy J Baumberg Lukas Schmidt-Mende

Imprinted silver nanovoid arrays are investigated via angle-resolved reflectometry to demonstrate their suitability for plasmonic light trapping. Both wavelength- and subwavelength-scale nanovoids are imprinted into standard solar cell architectures to achieve nanostructured metallic electrodes which provide enhanced absorption for improving solar cell performance. The technique is versatile, l...

2013
Ashley M. Driver Wen Huang Jenna Kropp Francisco Peñagaricano Hasan Khatib

Imprinted genes have been implicated in early embryonic, placental, and neonatal development and alterations in expression levels of these genes can lead to growth abnormalities and embryonic lethality. However, little is known about the functions of bovine imprinted genes during the pre-implantation period. Therefore, the objective of this study was to assess the influence of altered expressio...

Journal: :بینا 0
سیدهاشم دریاباری h daryabari دانشگاه علوم پزشکی بقیه اله- تهران- ایران علیرضا برادران رفیعی ar baradaran rafii shahid beheshti university of medical sciences, tehran, iranمرکز تحقیقات مهندسی بافت چشم- دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران اسماعیل بی آزار e biazar گروه مهندسی پزشکی- دانشگاه آزاد اسلامی واحد تنکابن- تنکابن- ایران سعید حیدری کشل s heydari keshel دانشگاه علوم پزشکی تهران- تهران- ایران مجید شمس m shams shahid beheshti university of medical sciencesمرکز تحقیقات چشم دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران

purpose: to develop a nanofibrous polycaprolacton (pcl) substrate for limbal stem cell (lsc) expansion that can serve as a potential alternative substrate to replace human amniotic membrane. methods: the human limbal stem cells (lscs) were used to evaluate the biocompatibility of substrates (nanofibrous scaffold, and human amniotic membrane) regarding cellular phenotypic profile, viability, pro...

Journal: :Nanomanufacturing and Metrology 2021

Abstract Uniform molding and demolding of structures on highly curved surfaces through conformal contact is a crucial yet often-overlooked aspect nanoimprint lithography (NIL). This study describes the development NIL tool its integration into nanopositioning nanomeasuring machine to achieve high-precision orthogonal for soft ultraviolet-assisted (soft UV-NIL). The process was implemented prima...

Journal: :Asian journal of andrology 2012
Teodora Ribarska Klaus-Marius Bastian Annemarie Koch Wolfgang A Schulz

Epigenetic dysregulation comprising DNA hypermethylation and hypomethylation, enhancer of zeste homologue 2 (EZH2) overexpression and altered patterns of histone modifications is associated with the progression of prostate cancer. DNA methylation, EZH2 and histone modifications also ensure the parental-specific monoallelic expression of at least 62 imprinted genes. Although it is therefore temp...

2014
Fang Bai A. M. Settles

Normal plant development requires epigenetic regulation to enforce changes in developmental fate. Genomic imprinting is a type of epigenetic regulation in which identical alleles of genes are expressed in a parent-of-origin dependent manner. Deep sequencing of transcriptomes has identified hundreds of imprinted genes with scarce evidence for the developmental importance of individual imprinted ...

2014
E.S.S. de Araújo L.R. Vasques R. Stabellini A.C.V. Krepischi L.V. Pereira

DNA methylation is essential in X chromosome inactivation and genomic imprinting, maintaining repression of XIST in the active X chromosome and monoallelic repression of imprinted genes. Disruption of the DNA methyltransferase genes DNMT1 and DNMT3B in the HCT116 cell line (DKO cells) leads to global DNA hypomethylation and biallelic expression of the imprinted gene IGF2 but does not lead to re...

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