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Experimental Cell Research

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https://www.readbyqxmd.com/read/28532652/inhibition-of-glycolysis-by-a-novel-egfr-her2-inhibitor-ku004-suppresses-the-growth-of-her2-cancer
#1
Chongchong Tian, Ziqiao Yuan, Dengqiu Xu, Pingping Ding, Tao Wang, Luyong Zhang, Zhenzhou Jiang
Upregulation of glycolysis was often observed in human HER2-overexpressing cancers. In this study, we demonstrated that KU004, a dual novel EGFR/HER2 inhibitor, disrupted cancer cell proliferation via modulation of glycolysis. KU004, inhibited the Warburg effect by suppressing hexokinase II (HK2) expression at the transcptional and post-translational levels. Further study demonstrated that the downregulation of HKII by KU004 was mainly mediated by the PI3K/Akt signaling pathway. Furthermore, the role of HKII downregulation in KU004-mediated antitumor effect was also confirmed in our in vivo xenograft model...
May 19, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28529106/engineered-cartilage-regeneration-from-adipose-tissue-derived-mesenchymal-stem-cells-a-morphomolecular-study-on-osteoblast-chondrocyte-and-apoptosis-evaluation
#2
Marta Anna Szychlinska, Paola Castrogiovanni, Houda Nsir, Michelino Di Rosa, Claudia Guglielmino, Rosalba Parenti, Giovanna Calabrese, Elisabetta Pricoco, Lucia Salvatorelli, Gaetano Magro, Rosa Imbesi, Ali Mobasheri, Giuseppe Musumeci
The poor self-repair capacity of cartilage tissue in degenerative conditions, such as osteoarthritis (OA), has prompted the development of a variety of therapeutic approaches, such as cellular therapies and tissue engineering based on the use of mesenchymal stem cells (MSCs). The aim of this study is to demonstrate, for the first time, that the chondrocytes differentiated from rat adipose tissue derived-MSCs (AMSCs), are able to constitute a morphologically and biochemically healthy hyaline cartilage after 6 weeks of culture on a Collagen Cell Carrier (CCC) scaffold...
May 18, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28529105/psme3-induces-epithelial-mesenchymal-transition-with-inducing-the-expression-of-csc-markers-and-immunosuppression-in-breast-cancer
#3
Ziying Yi, Dejuan Yang, Xuelian Liao, Fuchun Guo, Yongsheng Wang, Xiaoyi Wang
Proteasome activator subunit 3 (PSME3) plays a key role in breast cancer by regulating the cell cycle. However, its role in other pathogenesis-related features of breast cancer is unclear. In this study, we found that overexpression of PSME3 induced the epithelial-mesenchymal transition and contributed to induce the expression of cancer stem cell markers of the MDA-MB-231 cell line, thus increasing the migration, and invasion of the cells. Moreover, overexpression of PSME3 reduced the chemotaxis of CD8(+) T cells and induced the apoptosis of T cells in vitro...
May 18, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28527698/non-diaphanous-formin-delphilin-acts-as-a-barbed-end-capping-protein
#4
Priyanka Dutta, Swagata Das, Sankar Maiti
Formins are multi domain protein present ubiquitously in all eukaryotes from lower fungi to higher vertebrates. Formins are characterized by the presence of formin homology domain-2 (FH2) and formin homology domain-1 (FH1). There are fifteen different formins present in mouse and human. Among these metazoan formins Delphilin is a unique formin having two PDZ domains at the N-terminal and FH1, FH2 domain at the C-terminus respectively. In this study we observed that Delphilin binds to actin filaments, and Delphilin inhibits actin filament elongation like barbed end capping protein CapZ...
May 17, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28527697/antibiotics-induce-mitonuclear-protein-imbalance-but-fail-to-inhibit-respiration-and-nutrient-activation-in-pancreatic-%C3%AE-cells
#5
Jaime Santo-Domingo, Isabelle Chareyron, Charlotte Broenimann, Steve Lassueur, Andreas Wiederkehr
Chloramphenicol and several other antibiotics targeting bacterial ribosomes inhibit mitochondrial protein translation. Inhibition of mitochondrial protein synthesis leads to mitonuclear protein imbalance and reduced respiratory rates as confirmed here in HeLa and PC12 cells. Unexpectedly, respiration in INS-1E insulinoma cells and primary human islets was unaltered in the presence of chloramphenicol. Resting respiratory rates and glucose stimulated acceleration of respiration were also not lowered when a range of antibiotics including, thiamphenicol, streptomycin, gentamycin and doxycycline known to interfere with bacterial protein synthesis were tested...
May 17, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28527696/essential-roles-of-g9a-in-cell-proliferation-and-differentiation-during-tooth-development
#6
Taichi Kamiunten, Hisashi Ideno, Akemi Shimada, Yoshinori Arai, Tatsuo Terashima, Yasuhiro Tomooka, Yoshiki Nakamura, Kazuhisa Nakashima, Hiroshi Kimura, Yoichi Shinkai, Makoto Tachibana, Akira Nifuji
Teeth develop through interactions between epithelial and mesenchymal tissues mediated by a signaling network comprised of growth factors and transcription factors However, little is known about how epigenetic modifiers affect signaling pathways and thereby regulate tooth formation. We previously reported that the histone 3 lysine 9 (H3K9) methyltransferase (MTase) G9a is specifically enriched in the tooth mesenchyme during mouse development. In this study, we investigated the functions of G9a in tooth development using G9a conditional knockout (KO) mice...
May 17, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28527695/cytoprotection-proliferation-and-epidermal-differentiation-of-adipose-tissue-derived-stem-cells-on-emu-oil-based-electrospun-nanofibrous-mat
#7
Younes Pilehvar-Soltanahmadi, Mohammad Nouri, Mikaël M Martino, Amir Fattahi, Effat Alizadeh, Masoud Darabi, Mohammad Rahmati-Yamchi, Nosratollah Zarghami
Electrospun nanofibrous scaffolds containing natural substances with wound healing properties such as Emu oil (EO) may have a great potential for increasing the efficiency of stem cell-based skin bioengineering. For this purpose, EO blended PCL/PEG electrospun nanofibrous mats were successfully fabricated and characterized using FE-SEM, FTIR and Universal Testing Machine. The efficiency of the scaffolds in supporting the adherence, cytoprotection, proliferation and differentiation of adipose tissue-derived stem cells (ADSCs) to keratinocyte was evaluated...
May 17, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28526238/ric8a-is-essential-for-the-organisation-of-actin-cytoskeleton-and-cell-matrix-interaction
#8
Katrin Ruisu, Riho Meier, Keiu Kask, Tambet Tõnissoo, Teet Velling, Margus Pooga
RIC8A functions as a chaperone and guanine nucleotide exchange factor for a subset of G protein α subunits. Multiple G protein subunits mediate various signalling events that regulate cell adhesion and migration and the involvement of RIC8A in some of these processes has been demonstrated. We have previously shown that the deficiency of RIC8A causes a failure in mouse gastrulation and neurogenesis - major events in embryogenesis that rely on proper association of cells with the extracellular matrix (ECM) and involve active cell migration...
May 16, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28526237/small-molecule-inhibition-of-wnt-signaling-abrogates-dexamethasone-induced-phenotype-of-primary-human-trabecular-meshwork-cells
#9
Sarah D Ahadome, Chi Zhang, Elizabeth Tannous, James Shen, Jie J Zheng
Trabecular meshwork (TM) cells are the governing regulators of the TM structure. When the functionality of these cells is impaired, the structure of the TM is perturbed, which often results in increased ocular hypertension. High intraocular pressure is the most significant risk factor for steroid-induced glaucoma. Dexamethasone (Dex) induced phenotype of TM cells is widely utilized as a model system to gain insight into mechanisms underlying damaged TM in glaucoma. In this study, to assess the possible role of the abnormal Wnt signaling in steroid-induced glaucoma, we analyzed the effects of small-molecule Wnt signaling modulators on Dex-induced expression extracellular matrix proteins of primary human TM cells...
May 16, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28506875/deubiquitinase-usp33-is-negatively-regulated-by-%C3%AE-trcp-through-ubiquitin-dependent-proteolysis
#10
Qiao Cheng, Yukang Yuan, Lemin Li, Tingting Guo, Ying Miao, Ying Ren, Jin Liu, Qian Feng, Xiaofang Wang, Peng Zhao, Yibo Zuo, Liping Qian, Liting Zhang, Hui Zheng
Ubiquitin-mediated proteolysis regulates cellular levels of various proteins, and therefore plays important roles in controlling cell signaling and disease progression. The Skp1-Cul1-F-box ubiquitin ligase β-TrCP is recognized as an important negative regulator for numerous key signaling proteins. Recently, the deubiquitinases (DUBs) have turned out to be essential to regulate signaling pathways related to human diseases. However, whether β-TrCP is able to regulate the deubiquitinase family members remains largely unexplored...
May 13, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28501461/spliceosome-associated-factor-ctnnbl1-promotes-proliferation-and-invasion-in-ovarian-cancer
#11
Yingwei Li, Haiyang Guo, Chengjuan Jin, Chunping Qiu, Min Gao, Lei Zhang, Zhaojian Liu, Beihua Kong
Ovarian cancer is the most lethal gynecologic malignancy and the molecular pathogenesis of high-grade serous ovarian carcinoma has not been completely characterized. Numerous studies have shown that altered splicing patterns and splicing factors were found to contribute to tumor development and progression. In this study, we demonstrated that spliceosome-associated factor CTNNBL1 was significantly upregulated in high-grade serous ovarian carcinoma, the elevated level of CTNNBL1 indicates poor prognosis in patients with high-grade serous ovarian carcinoma...
May 10, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28501460/involvement-of-jnk-signaling-in-il4-induced-m2-macrophage-polarization
#12
Jin Hao, Yanxia Hu, Yiman Li, Qin Zhou, Xiaoyan Lv
It has been generally accepted that alternatively activated macrophages (M2), which can be induced by type 2 cytokines such as IL-4, is responsible for tissue repair. However, the function of JNK in IL-4-induced M2 macrophage polarization remains unclear. Here, we demonstrated that M0 macrophages can be polarized into M2 status in response to IL-4 stimulation with the increased expression of the M2-specific molecular markers. We also found that IL-4 induced higher expression of JNK and transcription factor c-Myc in M2 macrophages...
May 10, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28499590/mir-93-5p-inhibits-the-emt-of-breast-cancer-cells-via-targeting-mkl-1-and-stat3
#13
Yuan Xiang, Xing-Hua Liao, Cheng-Xi Yu, Ao Yao, Huan Qin, Jia-Peng Li, Peng Hu, Hui Li, Wei Guo, Chao-Jiang Gu, Tong-Cun Zhang
Epithelial-mesenchymal transition (EMT) plays an important role in breast cancer cell metastasis. Both (megakaryoblastic leukemia)/myocardin-like 1 (MKL-1) and Signal transducer and activator of transcription 3 (STAT3) have been implicated in the control of cellular metabolism, survival and growth. Our previous study has shown that cooperativity of MKL-1 and STAT3 promoted breast cancer cell migration. Herein, we demonstrate a requirement for MKL-1 and STAT3 in miRNA-mediated cellular EMT to affect breast cancer cell migration...
May 9, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28483447/therapeutic-targeting-of-the-hif-oxygen-sensing-pathway-lessons-learned-from-clinical-studies
#14
Volker H Haase
The oxygen-sensitive hypoxia-inducible factor (HIF) pathway plays a central role in the control of erythropoiesis and iron metabolism. The discovery of prolyl hydroxylase domain (PHD) proteins as key regulators of HIF activity has led to the development of inhibitory compounds that are now in phase 3 clinical development for the treatment of renal anemia, a condition that is commonly found in patients with advanced chronic kidney disease. This review provides a concise overview of clinical effects associated with pharmacologic PHD inhibition and was written in memory of Professor Lorenz Poellinger...
May 5, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28479070/the-effects-of-activin-a-on-the-migration-of-human-breast-cancer-cells-and-neutrophils-and-their-migratory-interaction
#15
Dongxue Xie, Zhonghui Liu, Jiandong Wu, Wenfang Feng, Ke Yang, Jixian Deng, Ganghong Tian, Susy Santos, Xueling Cui, Francis Lin
Activin A belongs to the superfamily of transforming growth factor beta (TGFβ) and is a critical regulatory cytokine in breast cancer and inflammation. However, the role of activin A in migration of breast cancer cells and immune cells was not well characterized. Here, a microfluidic device was used to examine the effect of activin A on the migration of human breast cancer cell line MDA-MB-231 cells and human blood neutrophils as well as their migratory interaction. We found that activin A promoted the basal migration but impaired epidermal growth factor (EGF)-induced migration of breast cancer cells...
May 4, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28478957/sirt6-regulated-nucleosomal-occupancy-affects-hexokinase-2-expression
#16
Piyushi Gupta, Touseef Sheikh, Ellora Sen
To understand the molecular association between inflammation and dysregulated metabolism in glioblastoma, the effect of IL-1β on Hexokinase 2 (HK2) expression was investigated. IL-1β induced HK2 expression was accompanied by heightened SIRT6 and MZF1 levels. IL-1β mediated overall decrease in chromatin compactness on HK2 promoter involved diminished nucleosomal occupancy around the most labile region bearing MZF1 sites. Importantly, SIRT6 and MZF1 served as negative regulators of HK2. Ectopic SIRT6 induced formation and recruitment of MZF1-SIRT6 complex to MZF1 site was concomitant with increased nucleosomal occupancy...
May 4, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28477980/sirt6-inhibits-tnf-%C3%AE-induced-inflammation-of-vascular-adventitial-fibroblasts-through-ros-and-akt-signaling-pathway
#17
Yanhao He, Yunfang Xiao, Xiaofeng Yang, Yanxiang Li, Bo Wang, Feng Yao, Chenxu Shang, Zhen Jin, Weirong Wang, Rong Lin
SIRT6, with both deacetylase and ADP-ribosyltransferase activities, is predominantly expressed in the nucleus. It has been revealed that SIRT6 regulates various biological functions including metabolism, aging and stress resistance. This study aims to investigate the role of SIRT6 in vascular inflammation and it molecular mechanism. We found that tumor necrosis factor-α (TNF-α) did not alter the localization of SIRT6 in vascular adventitial fibroblasts (VAFs), vascular endothelial cells (VECs) and vascular smooth muscle cells (VSMCs)...
May 4, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28476309/bombesin-receptor-activated-protein-regulates-neutrophil-elastase-induced-mucin-5ac-hypersecretion-in-human-bronchial-epithelial-cells
#18
Qing Xu, Ling-Xiu Chen, Dan-Hua Ran, Wen-Yue Xie, Xiang-Dong Zhou
Bombesin receptor-activated protein (BRAP) is highly expressed in human bronchial epithelial cells. Recent studies have shown that BRAP reduces oxidative stress, inhibits airway inflammation and suppresses nuclear factor kappaB (NF-κB) activity. Mucus overproduction is an important feature in patients with chronic inflammatory airway diseases. Neutrophil elastase (NE) is a potent inducer of mucin5AC (MUC5AC), which is considered the predominant mucin secreted by human airway epithelial cells. Here, we hypothesize that BRAP may regulate NE-induced MUC5AC hypersecretion in a bronchial epithelial cell line (HBE16)...
May 2, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28461158/pancreatic-stellate-cells-increase-pancreatic-cancer-cells-invasion-through-the-hepatocyte-growth-factor-c-met-survivin-regulated-by-p53-p21
#19
Xiao-Peng Yang, Shang-Long Liu, Jian-Fei Xu, Shou-Gen Cao, Yu Li, Yan-Bing Zhou
Pancreatic stellate cells (PSCs) are a key cellular component of the pancreatic tumor microenvironment and are considered to contribute to tumor invasion and metastasis. Multiple cytokines and growth factors derived from PSCs are involved in malignant cancer progression, including hepatocyte growth factor (HGF). However, the molecular mechanisms by which HGF regulates cancer invasion and metastasis have not been completely elucidated. Here, we report that two pancreatic cancer (PC) cell lines, Panc-1 and SW1990, displayed different invasive and migratory abilities after treatment with HGF secreted by PSCs...
April 29, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28457987/fire-and-water-tumor-cell-adaptation-to-metabolic-conditions
#20
Rob A Cairns, Tak W Mak
Lorenz Poellinger was a leader in understanding the effects of altered microenvironmental conditions in tumor biology and in normal physiology. His work examining the effects of hypoxia and the HIF transcription factors has expanded our understanding of the role of the microenvironment in affecting the behaviour of both normal and malignant cells. Furthermore, his work provides a model for understanding the adaptive responses to other metabolic stress conditions. By investigating the molecular mechanisms responsible for the adaptive responses to metabolic stress in normal physiological situations, across pathological conditions, and in different model organisms, his work shows the power of combining data from different model systems and physiological contexts...
April 27, 2017: Experimental Cell Research
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