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https://www.readbyqxmd.com/read/29909422/expression-of-transcription-factor-21-tcf21-and-upregulation-its-level-inhibits-invasion-and-metastasis-in-esophageal-squamous-cell-carcinoma
#1
Yue Chen, Cheng Zhang, Jing Chen, Bohan Zhang, Hongqi Zhang, Xuetao Yang, Jingshu Liu, Qingchen Wu
BACKGROUND Transcription factor 21 (TCF21), a member of the class A of basic helix-loop-helix family, has been widely identified as a tumor suppressor. Growing evidence has demonstrated the downregulation of TCF21 in distinct cancers. The aim of this study was to explore the expression and biological functions of TCF21 in esophageal squamous cell carcinoma (ESCC). MATERIAL AND METHODS TCF21 expression in esophageal cancer cell lines and carcinomas tissues were detected, and its associations with clinical characteristics were analyzed...
June 17, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29909342/fak-and-bmp-9-synergistically-trigger-osteogenic-differentiation-and-bone-formation-of-adipose-derived-stem-cells-through-enhancing-wnt-%C3%AE-catenin-signaling
#2
Cheng Yuan, Xiaoli Gou, Jiang Deng, Zhijun Dong, Peng Ye, Zhenming Hu
BACKGROUNDS: Adipose derived stem cells (ADSCs) could undergo osteogenesis via focal adhesion kinase (FAK) and bone morphogenetic protein (BMP) 9 signals, both of which could affect Wnt-β-catenin signal, a signal pathway closely related to ADSCs osteogenesis. It's still enigma whether FAK and BMP-9 contribute to osteogenesis. Here, we examined the effect of FAK on BMP9-inducedosteogenic differentiation, unveiled the possible molecular mechanism underling this process. METHODS: In the present study, ADSCs were isolated and purified, and cells of passage 3 underwent virus mediated transfection to prepare ADSCs with stable FAK shRNA expression...
June 14, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29909312/icariin-loaded-electrospun-pcl-gelatin-nanofiber-membrane-as-potential-artificial-periosteum
#3
Min Gong, Cheng Chi, Jingjing Ye, Meihong Liao, Wenqi Xie, Chengai Wu, Rui Shi, Liqun Zhang
Due to the significant role of the periosteum in bone regeneration, we hypothesised that using a specially engineered artificial periosteum could lead to an enhancement in osteogenesis in bone grafts. Herein, we describe our work aimed at fabricating an electrospun fibrous membrane as an artificial periosteum that exhibits flexibility, permeability and osteoinduction. This membrane was designed to cover the complex surface of bone grafts to facilitate and accelerate bone regeneration. The traditional Chinese medicine icariin (ICA) was subsequently introduced into poly (ε-caprolactone) (PCL) /gelatin nanofibers to fabricate an artificial periosteum for the first time...
June 14, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29909260/the-toxic-effect-of-aflatoxin-b1-on-early-porcine-embryonic-development
#4
Kyung-Tae Shin, Jing Guo, Ying-Jie Niu, Xiang-Shun Cui
Aflatoxin B1 (AFB1) is a type of mycotoxin produced by the fungi Aspergillus flavus and Aspergillus parasiticus. AFB1 is considered as the most toxic mycotoxin owing to its toxic effect on health. In the present study, the toxic effect of AFB1 on early porcine embryonic development and its possible mechanism were investigated. Blastocyst formation was impaired with treatment of 1 nM AFB1 compared with control, 0.01, 0.1 group (40.13 ± 2.10%, 28.21 ± 1.62%, 32.34 ± 2.07% vs 19.01 ± 1.06%)...
June 8, 2018: Theriogenology
https://www.readbyqxmd.com/read/29909007/early-emergence-of-de-novo-egfr-t790-m-gatekeeper-mutations-during-erlotinib-treatment-in-pc9-non-small-cell-lung-cancer-cells
#5
Sujin Kim, Angela Kj Park, Jeonghee Cho
The emergence of the T790 M gatekeeper mutation in the Epidermal Growth Factor Receptor (EGFR) gene is an important mechanism that can lead to the acquired resistance to EGFR-targeted tyrosine kinase inhibitors such as erlotinib or gefitinib. These drugs have been used in treating a subset of non-small cell lung cancer (NSCLC) patients harboring EGFR activating mutations. Here we investigated the paths leading to the acquisition of the T790 M mutation by establishing an erlotinib resistant PC9 cell model harboring ectopically introduced EGFR cDNA...
June 14, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29908986/hydroquinone-exposure-worsens-the-symptomatology-of-rheumatoid-arthritis
#6
Cintia Scucuglia Heluany, Leonard de Vinci Kanda Kupa, Mariana Nascimento Viana, Cristina Maria Fernandes, Sandra Helena Poliselli Farsky
The genesis of rheumatoid arthritis (RA) is complex and dependent on genetic background and exposure to environmental xenobiotic. Indeed, smoking is associated to developing and worsening pre-existing RA. Nevertheless, the mechanisms and cigarette compounds involved in the harmful processes have not been elucidated. Here, we investigated if the exposure to hydroquinone (HQ), an abundant pro-oxidative compound of cigarette and benzene metabolite, could worsen the ongoing RA. Hence, collagen-induced arthritis (CIA) was induced in male Wistar rats by s...
June 14, 2018: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29908922/serum-angiopoietin-like-peptide-4-levels-in-patients-with-hepatic-steatosis
#7
Özgür Altun, Okan Dikker, Yücel Arman, Bilal Ugurlukisi, Orkide Kutlu, Eylem Ozgun Cil, Sengul Aydin Yoldemir, Murat Akarsu, Mustafa Ozcan, Semih Kalyon, Neslihan Ozsoy, Tufan Tükek
OBJECTIVES: Angiopoietin-like peptide 4 (ANGPTL-4) plays an important role in lipid metabolism by inhibiting the enzyme lipoprotein lipase. This effect of ANGPTL-4 results in suppression of the release of plasma triglyceride-derived fatty acids. Increase in fatty acid levels entering to the liver and abnormalities in their secretion is one of the main mechanisms in pathogenesis of hepatic steatosis. In this study, we aimed to investigate the role of ANGPTL-4 in pathogenesis of hepatic steatosis by determining its levels in patients with fatty liver disease...
June 13, 2018: Cytokine
https://www.readbyqxmd.com/read/29908733/mutual-detoxification-of-mercury-and-selenium-in-unicellular-tetrahymena
#8
Cheng-Bin Liu, Li Zhang, Qi Wu, Guang-Bo Qu, Yong-Guang Yin, Li-Gang Hu, Jian-Bo Shi, Gui-Bin Jiang
Selenium (Se) is commonly recognized as a protective element with an antagonistic effect against mercury (Hg) toxicity. However, the mechanisms of this Hg-Se antagonism are complex and remain controversial. To gain insight into the Hg-Se antagonism, a type of unicellular eukaryotic protozoa (Tetrahymena malaccensis, T. malaccensis) was selected and individually or jointly exposed to two Hg and three Se species. We found that Se species showed different toxic effects on the proliferation of T. malaccensis with the toxicity following the order: selenite (Se(IV))>selenomethionine (SeMeth)>selenate (Se(VI))...
June 2018: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/29908544/scrutinizing-the-expression-and-blockade-of-inhibitory-molecules-expressed-on-t-cells-from-acute-myeloid-leukemia-patients
#9
Mohsen Abdolmaleki, Nazanin Mojtabavi, Mahdi Zavvar, Mohammad Vaezi, Farshid Noorbakhsh, Mohammad Hossein Nicknam
T cell exhaustion is an immunosuppressive mechanism which occurs in chronic viral infections, solid tumors and hematologic malignancies. Exhausted T cell has increased the expression of inhibitory receptors, and functional impairment. In this study, we investigated the expression from some of those inhibitory receptors being Programmed death 1 (PD-1), T cell immunoglobulin and mucin domain containing molecules 3 (TIM-3) and CD244 on T cells from Iranian acute myeloid leukemia (AML) patients. Peripheral blood samples were collected from Iranian newly diagnosed AML patients and flow cytometric analysis was accomplished for cell surface expression of PD-1, TIM-3, and CD244 on T lymphocytes...
June 2018: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29908342/biocompatible-pegylated-gold-nanorods-function-as-cytokinesis-inhibitors-to-suppress-angiogenesis
#10
Hongyuan Song, Ting Guo, Zichang Zhao, Youheng Wei, Haoyang Luo, Weizong Weng, Rui Zhang, Ming Zhong, Chunying Chen, Jiacan Su, Wei Shen
Pathological angiogenesis is driven by uncontrolled growth of endothelial cells (ECs), which could lead to retinopathy, tumor and rheumatoid arthritis, etc. ECs must experience multiple cell division process to grow, and cytokinesis is the final step. The present study shows that PEGylated GNRs (PEG-GNRs) specifically target ECs cytokinesis process which results in high ratio of binucleated cells, and these binucleated ECs lose the ability to proliferate. Further data show that PEG-GNRs do not induce toxicity in vitro and in vivo...
June 7, 2018: Biomaterials
https://www.readbyqxmd.com/read/29908294/tet2-regulates-osteoclast-differentiation-by-interacting-with-runx1-and-maintaining-genomic-5-hydroxymethylcytosine-5hmc
#11
Yajing Chu, Zhigang Zhao, David Wayne Sant, Ganqian Zhu, Sarah M Greenblatt, Lin Liu, Jinhuan Wang, Zeng Cao, Jeanette Cheng Tho, Shi Chen, Xiaochen Liu, Peng Zhang, Jaroslaw P Maciejewski, Stephen Nimer, Gaofeng Wang, Weiping Yuan, Feng-Chun Yang, Mingjiang Xu
As a dioxygenase, Ten-eleven translocation 2 (TET2) catalyzes subsequent steps of 5-methylcytosine (5mC) oxidation. Tet2 plays a critical role in the self-renewal, proliferation, and differentiation of hematopoietic stem cells, but its impact on mature hematopoietic cells is not well-characterized. Here we show that Tet2 plays an essential role in osteoclastogenesis. Deletion of Tet2 impairs the differentiation of osteoclast precursor cells (macrophages) and their maturation into bone-resorbing osteoclasts in vitro...
June 13, 2018: Genomics, Proteomics & Bioinformatics
https://www.readbyqxmd.com/read/29908283/mir-378-and-bmp-smad-can-influence-the-proliferation-of-sheep-myoblast
#12
Zengkui Lu, Lixin Du, Ruizao Liu, Ran Di, Liping Zhang, Youji Ma, Qing Li, Enmin Liu, Mingxing Chu, Caihong Wei
MicroRNA (miRNA) is a sort of endogenous ~20-25 nt non-coding RNAs, and it can regulate a variety of biological events. We found the miR-378 may involve in regulating the muscle development of sheep during our previous research. However, the molecular mechanism of miR-378 regulating myoblast proliferation is still unclear. In this research, we predicted that BMP2 (Bone morphogenetic protein 2) was the target gene of miR-378 and the BMP-Smad signal pathway that BMP2 participated in playing an important role in the muscle development...
June 13, 2018: Gene
https://www.readbyqxmd.com/read/29908280/lncrna-uca1-sponges-mir-26a-to-regulate-the-migration-and-proliferation-of-vascular-smooth-muscle-cells
#13
Shigang Tian, Yuan Yuan, Zhuo Li, Ming Gao, Ying Lu, Haiying Gao
BACKGROUND: Recent studies have shown that the long non-coding RNA urothelial carcinoma-associated (UCA1) plays a key role in cardiovascular injury. However, the potential biological role of UCA1 in progression of atherosclerosis (AS) remains unclear. The aim of the present study is to identify the regulation of lncRNA UCA1 on atherosclerosis-related vascular dysfunction via miR-26a targeting phosphatase and tensin homolog (PTEN), and investigate the underlying mechanisms in the development of atherosclerosis...
June 13, 2018: Gene
https://www.readbyqxmd.com/read/29908243/protective-roles-of-fenofibrate-against-cisplatin-induced-ototoxicity-by-the-rescue-of-peroxisomal-and-mitochondrial-dysfunction
#14
Se-Jin Kim, Channy Park, Joon No Lee, Raekil Park
Cisplatin is an alkylating agent that interferes with DNA replication and kills proliferating carcinogenic cells. Several studies have been conducted to attenuate the side effects of cisplatin; one such side effect in cancer patients undergoing cisplatin chemotherapy is ototoxicity. However, owing to a lack of understanding of the precise mechanism underlying cisplatin-induced side effects, management of cisplatin-induced ototoxicity remains unsolved. We investigated the protective effects of fenofibrate, a PPAR-α activator, on cisplatin-induced ototoxicity...
June 13, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29908222/oral-pemetrexed-facilitates-low-dose-metronomic-therapy-and-enhances-antitumor-efficacy-in-lung-cancer
#15
Foyez Mahmud, Ok-Cheol Jeon, Farzana Alam, Ruby Maharjan, Jeong Uk Choi, Jooho Park, Sojung Lee, Jin Woo Park, Dong Soo Lee, Youngro Byun
There is a growing interest in preclinical research to consider low-dose metronomic chemotherapy as antiangiogenic cancer treatment. Oral metronomic therapy, in particular, has shown much promise with its ease of daily administration and higher therapeutics window. In that regard, we developed oral pemetrexed using the physical complex with the bile acid enhancers (DCK). In a caco-2 permeability study, the oral pemetrexed/DCK complex had significantly higher drug uptake, and inhibited efflux transporter activity as well...
June 13, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29908149/a-hexokinase-2-modulator-for-field-directed-treatment-of-experimental-actinic-keratoses
#16
Vered Behar, Hadas Pahima, Adi Kozminsky-Atias, Nir Arbel, Emmanuel Loeb, Max Herzberg, Oren M Becker
Overexpression of hexokinase 2 (HK2), and its binding to VDAC1 on the outer mitochondrial membrane of cancer cells, is key to their metabolic reprogramming to aerobic glycolysis, which enables them to proliferate. We describe Comp-1, an allosteric small molecule that selectively detaches HK2 from the mitochondria. Detachment of HK2 reduces glycolysis and triggers apoptosis in cancer cells, without affecting HK1 expressing normal cells. The anti-cancer activity of Comp-1 was demonstrated in the UVB-damaged skin model in SKH-1 mice...
June 13, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29908000/serpin-a1-and-the-modulation-of-type-i-collagen-turnover-effect-of-the-c-terminal-peptide-409-418-sa1-iii-in-human-dermal-fibroblasts
#17
Caterina Cipriani, Simona Pascarella, Fosca Errante, Beatrice Menicacci, Lucia Magnelli, Alessandra Mocali, Paolo Rovero, Lisa Giovannelli
The pharmacological modulation of collagen turnover is a strategy potentially useful in different skin conditions. The serine protease inhibitor Serpin A1 and portions of its C-terminal region have been investigated as collagen modulators. To clarify the mechanisms by which the C-terminal 409-418 peptide SA1-III increases extracellular type I collagen levels, to compare its activities range with that of the originator molecule Serpin A1, and to evaluate its efficacy in primary cultures from adult and aged human subjects...
June 16, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29907991/lipopolysaccharide-induced-the-proliferation-of-mouse-lung-fibroblasts-by-suppressing-foxo3a-p27-pathway
#18
Nannan Gu, Shunpeng Xing, Sihan Chen, Yuxi Zhou, Tao Jiang, Yingfu Jiao, Yuan Gao, Weifeng Yu, Zhengyu He, Daxiang Wen
Aberrant aggregation and activation of lung fibroblasts is a key process in pulmonary fibrosis, but the underlying mechanism remains enigmatic. Forkhead Box O3a (FoxO3a) is considered to be an important transcription factor that could regulate both cell cycle and cell viability. To investigate the role of FoxO3a on LPS-induced lung fibroblast proliferation, we transfected FoxO3a-SiRNA or FoxO3a-OE lentivirus into cultured mouse lung fibroblasts to knockdown or overexpress FoxO3a and pretreated mouse lung fibroblasts with gefitinib to enhance FoxO3a activity...
June 16, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29907957/laminin-%C3%AE-1-orchestrates-vegfa-functions-in-the-ecosystem-of-colorectal-carcinoma
#19
E Mammadova-Bach, T Rupp, C Spenlé, I Jivkov, P Shankaranarayanan, A Klein, L Pisarsky, A Méchine-Neuville, G Cremel, M Kedinger, O De Wever, N Ambartsumian, S Robine, E Pencreach, D Guenot, P Simon-Assmann, J G Goetz, G Orend, O Lefebvre
Tumor stroma remodeling is a key feature of malignant tumors and can promote cancer progression. Laminins are major constituents of basement membranes that physically separate the epithelium from the underlying stroma. By employing mouse models expressing high and low levels of the laminin α1 chain (LMα1), we highlighted its implication in a tumor-stroma crosstalk, thus leading to increased colon tumor incidence, angiogenesis and tumor growth. The underlying mechanism involves attraction of carcinoma-associated fibroblasts by LMα1, VEGFA expression triggered by the complex integrin α2β1-CXCR4 and binding of VEGFA to LM-111, which in turn promotes angiogenesis, tumor cell survival and proliferation...
June 15, 2018: Biology of the Cell
https://www.readbyqxmd.com/read/29907831/strontium-ranelate-promotes-odonto-osteogenic-differentiation-mineralization-of-dental-papillae-cells-in-vitro-and-mineralized-tissue-formation-of-the-dental-pulp-in-vivo
#20
Alamuddin Bakhit, Nobuyuki Kawashima, Kentaro Hashimoto, Sonoko Noda, Keisuke Nara, Masashi Kuramoto, Kento Tazawa, Takashi Okiji
This study examined the effects and mechanisms of strontium ranelate (SrRn)-a drug used to treat osteoporosis-on the proliferation and differentiation/mineralization of cloned dental pulp-like cells (mouse dental papillae cells; MDPs). It also determined whether topical application of SrRn to exposed dental pulp tissue promotes the formation of mineralized tissue in vivo. The MDPs were cultured with or without SrRn, and cell proliferation, odonto-/osteoblastic gene expression, mineralized nodule formation, and Akt phosphorylation were evaluated...
June 15, 2018: Scientific Reports
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