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Cellular & Molecular Biology Letters

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https://www.readbyqxmd.com/read/28536640/survival-rates-of-homozygotic-tp53-knockout-rats-as-a-tool-for-preclinical-assessment-of-cancer-prevention-and-treatment
#1
Damian Strzemecki, Magdalena Guzowska, Paweł Grieb
BACKGROUND: The gene that encodes tumor protein p53, Tp53, is mutated or silenced in most human cancers and is recognized as one of the most important cancer drivers. Homozygotic Tp53 knockout mice, which develop lethal cancers early in their lives, are already used in cancer prevention studies, and now Tp53 knockout rats have also been generated. This study assessed feasibility of using homozygous Tp53 knockout rats to evaluate the possible outcome of cancer chemoprevention. METHODS: A small colony of Tp53 knockout rats with a Wistar strain genetic background was initiated and maintained in the animal house at our institution...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536639/survivin-a-molecular-target-for-therapeutic-interventions-in-squamous-cell-carcinoma
#2
REVIEW
Zakir Khan, Abdul Arif Khan, Hariom Yadav, Godavarthi B K S Prasad, Prakash Singh Bisen
Squamous cell carcinoma (SCC) is the most common cancer worldwide. The treatment of locally advanced disease generally requires various combinations of radiotherapy, surgery, and systemic therapy. Despite aggressive multimodal treatment, most of the patients relapse. Identification of molecules that sustain cancer cell growth and survival has made molecular targeting a feasible therapeutic strategy. Survivin is a member of the Inhibitor of Apoptosis Protein (IAP) family, which is overexpressed in most of the malignancies including SCC and totally absent in most of the normal tissues...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536638/abcc6-knockdown-in-hepg2-cells-induces-a-senescent-like-cell-phenotype
#3
Rocchina Miglionico, Angela Ostuni, Maria Francesca Armentano, Luigi Milella, Elvira Crescenzi, Monica Carmosino, Faustino Bisaccia
BACKGROUND: Pseudoxanthoma elasticum (PXE) is characterized by progressive ectopic mineralization of elastic fibers in dermal, ocular and vascular tissues. No effective treatment exists. It is caused by inactivating mutations in the gene encoding for the ATP-binding cassette, sub-family C member 6 transporter (ABCC6), which is mainly expressed in the liver. The ABCC6 substrate (s) and the PXE pathomechanism remain unknown. Recent studies have shown that overexpression of ABCC6 in HEK293 cells results in efflux of ATP, which is rapidly converted into nucleoside monophosphates and pyrophosphate (PPi)...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536637/ppar%C3%AE-agonist-through-the-terminal-differentiation-phase-is-essential-for-adipogenic-differentiation-of-fetal-ovine-preadipocytes
#4
Yong Pu, Almudena Veiga-Lopez
BACKGROUND: Although the 3T3-L1 preadipocyte cell line represents an informative model for in vitro adipogenesis research, primary cultured cells are often needed to understand particular human or animal metabolic phenotypes. As demonstrated by in vitro cultured preadipocytes from large mammalian species, primary cultured cells require specific adipogenic differentiation conditions different to that of the 3T3-L1 cell line. These conditions are also species-specific and require optimization steps...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536636/a-simple-and-effective-protocol-for-fast-isolation-of-human-tenon-s-fibroblasts-from-a-single-trabeculectomy-biopsy-a-comparison-of-cell-behaviour-in-different-culture-media
#5
Agata Przekora, Tomasz Zarnowski, Grazyna Ginalska
BACKGROUND: Human Tenon's fibroblasts (HTFs) play a crucial role in wound healing. They cause postoperative scarring of the filtering bleb and are thus responsible for trabeculectomy failure. This study aimed to find an effective and fast protocol for HTF isolation from trabeculectomy biopsies. The protocol was compared with the commonly recommended HTF isolation procedure, which uses Dulbecco's modified Eagle's medium (DMEM). We used Eagle's minimum essential medium (EMEM) enriched with fibroblast growth factor (FGF), which selectively promoted the proliferation of HTF cells...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536635/the-regulatory-mechanisms-of-ng2-cspg4-expression
#6
REVIEW
Emmanuel Ampofo, Beate M Schmitt, Michael D Menger, Matthias W Laschke
Neuron-glial antigen 2 (NG2), also known as chondroitin sulphate proteoglycan 4 (CSPG4), is a surface type I transmembrane core proteoglycan that is crucially involved in cell survival, migration and angiogenesis. NG2 is frequently used as a marker for the identification and characterization of certain cell types, but little is known about the mechanisms regulating its expression. In this review, we provide evidence that the regulation of NG2 expression underlies inflammation and hypoxia and is mediated by methyltransferases, transcription factors, including Sp1, paired box (Pax) 3 and Egr-1, and the microRNA miR129-2...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536634/microrna-210-induces-endothelial-cell-apoptosis-by-directly-targeting-pdk1-in-the-setting-of-atherosclerosis
#7
Ying Li, Chunyan Yang, Lili Zhang, Ping Yang
BACKGROUND: Atherosclerosis is a chronically inflammatory disease and one of the leading causes of deaths worldwide. Endothelial cell apoptosis plays a crucial role in its development. Several microRNAs (miRNAs) are reportedly involved in atherosclerotic plaque formation, including miRNA-210 (miR-210). However, the underlying mechanism of its role in endothelial cell apoptosis during atherosclerosis is still largely unknown. METHODS: A mouse model with atherosclerosis induced by a high-fat diet (HFD) was built in ApoE (-/-) mice...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536633/mitf-and-pu-1-inhibit-adipogenesis-of-ovine-primary-preadipocytes-by-restraining-c-ebp%C3%AE
#8
ChongMei Ruan, Xiu Li, JunJie Hu, Yong Zhang, XingXu Zhao
BACKGROUND: PU box-binding protein (PU.1) is a master gene of hematopoietic lineage and an important specific transcription factor in osteoclast lineage. There is proof of its expression in adipose tissue, and it is known to significantly and negatively affect adipogenesis. However, it is unclear whether there are any other molecules involved in this process. METHODS: We wished to explore the effect of PU.1's co-activator microphthalmia-associated transcription factor (MITF) on the adipogenic differentiation of ovine primary preadipocytes...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536632/avoiding-the-side-effects-of-electric-current-pulse-application-to-electroporated-cells-in-disposable-small-volume-cuvettes-assures-good-cell-survival
#9
Maciej Grys, Zbigniew Madeja, Włodzimierz Korohoda
BACKGROUND: The harmful side effects of electroporation to cells due to local changes in pH, the appearance of toxic electrode products, temperature increase, and the heterogeneity of the electric field acting on cells in the cuvettes used for electroporation were observed and discussed in several laboratories. If cells are subjected to weak electric fields for prolonged periods, for example in experiments on cell electrophoresis or galvanotaxis the same effects are seen. In these experiments investigators managed to reduce or eliminate the harmful side effects of electric current application...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536631/p62-links-the-autophagy-pathway-and-the-ubiqutin-proteasome-system-upon-ubiquitinated-protein-degradation
#10
REVIEW
Wei Jing Liu, Lin Ye, Wei Fang Huang, Lin Jie Guo, Zi Gan Xu, Hong Luan Wu, Chen Yang, Hua Feng Liu
The ubiquitin-proteasome system (UPS) and autophagy are two distinct and interacting proteolytic systems. They play critical roles in cell survival under normal conditions and during stress. An increasing body of evidence indicates that ubiquitinated cargoes are important markers of degradation. p62, a classical receptor of autophagy, is a multifunctional protein located throughout the cell and involved in many signal transduction pathways, including the Keap1-Nrf2 pathway. It is involved in the proteasomal degradation of ubiquitinated proteins...
2016: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536630/framework-to-function-mechanosensitive-regulators-of-gene-transcription
#11
REVIEW
Megan Finch-Edmondson, Marius Sudol
Mechanobiology has shifted our understanding of fundamental cellular and physiological functions. Changes to the stiffness of the extracellular matrix, cell rigidity, or shape of the cell environment were considered in the past to be a consequence of aging or pathological processes. We now understand that these factors can actually be causative biological mediators of cell growth to control organ size. Mechanical cues are known to trigger a relatively fast translocation of specific transcriptional co-factors such as MRTFs, YAP and TAZ from the cytoplasm to the cell nucleus to initiate discrete transcriptional programs...
2016: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536629/igg-silencing-induces-apoptosis-and-suppresses-proliferation-migration-and-invasion-in-lncap-prostate-cancer-cells
#12
Yawen Xu, Binshen Chen, Shaobo Zheng, Yong Wen, Abai Xu, Kai Xu, Bingkun Li, Chunxiao Liu
Immunoglobulin G (IgG) has been implicated in the progression of various cancers. This study explored the role of IgG in the proliferation, apoptosis, cell cycle and in vitro invasive properties of LNCaP prostate cancer cells. We used IGHG1 small interfering RNA to silence IgG1 expression in LNCaP cells. The efficacy of IgG1 gene knockdown was confirmed using qPCR and western blotting. The colony formation, proliferation, migration and invasion abilities of LNCaP cells after transfection were assessed using colony-forming, flow cytometry and transwell assays...
2016: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536628/the-characteristics-of-human-bone-derived-cells-hbdcs-during-osteogenesis-in-vitro
#13
Edyta Wrobel, Joanna Leszczynska, Edyta Brzoska
BACKGROUND: The primary human bone-derived cell culture technique is used as a model to study human osteogenesis. Compared to cell line cultures, primary osteoprogenitor and osteoblast cultures provide more complex information about osteogenesis, bone remodeling and regeneration than cell line cultures. METHODS: In this study, we isolated human bone-derived cells (HBDCs) and promoted their differentiation into osteoblasts. The following parameters were evaluated: cell number and viability, total protein expression, alkaline phosphatase activity, collagenous matrix production and osteogenic genes expression, i...
2016: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536627/the-identification-of-human-aldo-keto-reductase-akr7a2-as-a-novel-cytoglobin-binding-partner
#14
Xin Li, Shanshan Zou, Zhen Li, Gaotai Cai, Bohong Chen, Ping Wang, Wenqi Dong
Cytoglobin (CYGB), a member of the globin family, is thought to protect cells from reactive oxygen and nitrogen species and deal with hypoxic conditions and oxidative stress. However, its molecular mechanisms of action are not clearly understood. Through immunoprecipitation combined with a two-dimensional electrophoresis-mass spectrometry assay, we identified a CYGB interactor: aldo-keto reductase family 7 member A2 (AKR7A2). The interaction was further confirmed using yeast two-hybrid and co-immunoprecipitation assays...
2016: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536626/cordyceps-bassiana-inhibits-smooth-muscle-cell-proliferation-via-the-erk1-2-mapk-signaling-pathway
#15
Enze Jin, Seongho Han, Mina Son, Sung-Whan Kim
Cordyceps belongs to a genus of acormycete fungi and is known to exhibit various pharmacological effects. The aim of this study was to investigate the effect of Cordyceps species on the proliferation of vascular smooth muscle cells (VSMC) and their underlying molecular mechanism. A cell proliferation assay showed that Cordyceps bassiana ethanol extract (CBEE) significantly inhibited VSMC proliferation. In addition, neointimal formation was significantly reduced by treatment with CBEE in the carotid artery of balloon-injured rats...
2016: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536625/codon-bias-and-the-folding-dynamics-of-the-cystic-fibrosis-transmembrane-conductance-regulator
#16
REVIEW
Rafal Bartoszewski, Jaroslaw Króliczewski, Arkadiusz Piotrowski, Anna Janaszak Jasiecka, Sylwia Bartoszewska, Briana Vecchio-Pagan, Lianwu Fu, Aleksandra Sobolewska, Sadis Matalon, Garry R Cutting, Steven M Rowe, James F Collawn
Synonymous or silent mutations are often overlooked in genetic analyses for disease-causing mutations unless they are directly associated with potential splicing defects. More recent studies, however, indicate that some synonymous single polynucleotide polymorphisms (sSNPs) are associated with changes in protein expression, and in some cases, protein folding and function. The impact of codon usage and mRNA structural changes on protein translation rates and how they can affect protein structure and function is just beginning to be appreciated...
2016: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536624/serum-depletion-induces-changes-in-protein-expression-in-the-trophoblast-derived-cell-line-htr-8-svneo
#17
Susana Novoa-Herran, Adriana Umaña-Perez, Francesc Canals, Myriam Sanchez-Gomez
BACKGROUND: How nutrition and growth factor restriction due to serum depletion affect trophoblast function remains poorly understood. We performed a proteomic differential study of the effects of serum depletion on a first trimester human immortalized trophoblast cell line. METHODS: The viability of HTR-8/SVneo trophoblast cells in culture with 0, 0.5 and 10 % fetal bovine serum (FBS) were assayed via MTT at 24, 48 and 64 h. A comparative proteomic analysis of the cells grown with those FBS levels for 24 h was performed using two-dimensional electrophoresis (2DE), followed by mass spectrometry for protein spot identification, and a database search and bioinformatics analysis of the expressed proteins...
2016: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536623/a-computationally-constructed-cerna-interaction-network-based-on-a-comparison-of-the-shee-and-sheec-cell-lines
#18
Jiachun Sun, Junqiang Yan, Xiaozhi Yuan, Ruina Yang, Tanyou Dan, Xinshuai Wang, Guoqiang Kong, Shegan Gao
Long non-coding RNAs (lncRNAs) play critical and complicated roles in the regulation of various biological processes, including chromatin modification, transcription and post-transcriptional processing. Interestingly, some lncRNAs serve as miRNA "sponges" that inhibit interaction with miRNA targets in post-transcriptional regulation. We constructed a putative competing endogenous RNA (ceRNA) network by integrating lncRNA, miRNA and mRNA expression based on high-throughput RNA sequencing and microarray data to enable a comparison of the SHEE and SHEEC cell lines...
2016: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536622/the-role-of-exo70-in-vascular-smooth-muscle-cell-migration
#19
Wenqing Ma, Yu Wang, Xiaomeng Yao, Zijian Xu, Liguo An, Miao Yin
BACKGROUND: As a key subunit of the exocyst complex, Exo70 has highly conserved sequence and is widely found in yeast, mammals, and plants. In yeast, Exo70 mediates the process of exocytosis and promotes anchoring and integration of vesicles with the plasma membrane. In mammalian cells, Exo70 is involved in maintaining cell morphology, cell migration, cell connection, mRNA splicing, and other physiological processes, as well as participating in exocytosis. However, Exo70's function in mammalian cells has yet to be fully recognized...
2016: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28536621/response-gene-to-complement-32-regulates-the-g2-m-phase-checkpoint-during-renal-tubular-epithelial-cell-repair
#20
Yun-Lin Shen, Hua-Jie Liu, Lei Sun, Xiao-Ling Niu, Xin-Yu Kuang, Ping Wang, Sheng Hao, Wen-Yan Huang
BACKGROUND: The aim of this study was to evaluate the influence of RGC-32 (response gene to complement 32) on cell cycle progression in renal tubular epithelial cell injury. METHODS: NRK-52E cells with overexpressed or silenced RGC-32 were constructed via transient transfection with RGC-32 expression plasmid and RGC-32 siRNA plasmid, and the cell cycle distribution was determined. The expression levels of fibrosis factors, including smooth muscle action (α-SMA), fibronectin (FN) and E-cadherin, were assessed in cells with silenced RGC-32...
2016: Cellular & Molecular Biology Letters
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