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International Journal of Biochemistry & Cell Biology

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https://www.readbyqxmd.com/read/29454114/mitochondria-targeting-mitochondrial-reactive-oxygen-species-with-mitochondriotropic-polyphenolic-based-antioxidants
#1
José Teixeira, Cláudia M Deus, Fernanda Borges, Paulo J Oliveira
Mitochondrial function and regulation of redox balance is fundamental in controlling cellular life and death pathways. Antioxidants have been used to counteract disruption of redox networks, normally associated with progressive loss of cell homeostasis and disease pathophysiology, although therapeutic success is limited mainly due to pharmacokinetic drawbacks. Attempts to improve mitochondrial function in a range of diseases spurred active drug discovery efforts. Currently, the most effective strategy to deliver drugs to mitochondria is the covalent link of lipophilic cations to the bioactive compound...
February 14, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29452237/a-redox-sensitive-signaling-pathway-mediates-pro-angiogenic-effect-of-chlordecone-via-estrogen-receptor-activation
#2
Eid Alabed Alibrahim, Ramaroson Andriansitohaina, Kévin Hardonnière, Raffaella Soleti, Sébastien Faure, Gilles Simard
AIM: Chlordecone is able to induce pro-angiogenic effect through an estrogen receptor (ERα) pathway involving NO release and VEGF. The present study aimed to determine the molecular mechanisms by which chlordecone promotes angiogenesis in human endothelial cells. RESULTS: High but not low concentration of chlordecone increased mitochondrial respiratory capacity and mitochondrial DNA content in endothelial cells. The ROS scavenger MnTMPyP was able to prevent the increase of both VEGF expression and capillary length induced by chlordecone...
February 13, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29432906/hepatitis-b-virus-x-protein-and-proinflammatory-cytokines-synergize-to-enhance-trail-induced-apoptosis-of-renal-tubular-cells-by-upregulation-of-dr4
#3
Yitong Yang, Xuan Wang, Yueyue Zhang, Weijie Yuan
Persistent infection with hepatitis B virus (HBV) may lead to HBV-associated glomerulonephritis (HBV-GN). Presence of HBV-DNA and -RNA in renal tubular epithelial cells (RTECs) suggests direct virus-induced injury. Increase in proinflammatory cytokines is also observed under these conditions. Apoptosis by tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) plays a significant role in the pathogenesis of HBV-infections. However, the effects of HBV X protein (HBx) on TRAIL-induced apoptosis of RTECs especially under certain inflammatory conditions remain obscure...
February 9, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29425833/over-expressing-mir-19b-1-suppress-breast-cancer-growth-by-inhibiting-tumor-microenvironment-induced-angiogenesis
#4
Runting Yin, Le Guo, Jingya Gu, Chunling Li, Wei Zhang
Metastastic breast cancer, especially triple-negative (TN), is one of the most common causes of cancer related deaths in women. Recent years, tumor-associate vessel formation is considered as a more generally and effective target to patient with malignant cancer. Our previous studies indicated that miR-19b-1 controls the intrinsic angiogenic activity of human umbilical vein endothelial cells (HUVECs) in vitro. In this study, in silico analysis indicated VEZF1 that implicates in angiogenesis and triple-negative breast cancer progression might be the target of miR-19b-1...
February 6, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29425832/small-activating-rna-induced-expression-of-vhl-gene-in-renal-cell-carcinoma
#5
Moo Rim Kang, Ki Hwan Park, Chang Woo Lee, Myeong Youl Lee, Sang-Bae Han, Long-Cheng Li, Jong Soon Kang
Recent studies have reported that chemically synthesized double-stranded RNAs (dsRNAs), also known as small activating RNA (saRNAs), can specifically induce gene expression by targeting promoter sequences by a mechanism termed RNA activation (RNAa). In the present study, we designed 4 candidate saRNAs targeting the Von Hippel-Lindau (VHL) gene promoter. Among these saRNAs, dsVHL-821 significantly inhibited cell growth by up-regulating VHL at both the mRNA and protein levels in renal cell carcinoma 769-P cells...
February 6, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29421190/identification-of-a-high-affinity-binding-site-for-abscisic-acid-on-human-lanthionine-synthetase-component-c-like-protein-2
#6
Elena Cichero, Chiara Fresia, Lucrezia Guida, Valeria Booz, Enrico Millo, Claudia Scotti, Luisa Iamele, Hugo de Jonge, Denise Galante, Antonio De Flora, Laura Sturla, Tiziana Vigliarolo, Elena Zocchi, Paola Fossa
Lanthionine synthetase component C-like protein 2 (LANCL2) has been identified as the mammalian receptor mediating the functional effects of the universal stress hormone abscisic acid (ABA) in mammals. ABA stimulates insulin independent glucose uptake in myocytes and adipocytes via LANCL2 binding in vitro, improves glucose tolerance in vivo and induces brown fat activity in vitro and in vivo. The emerging role of the ABA/LANCL2 system in glucose and lipid metabolism makes it an attractive target for pharmacological interventions in diabetes mellitus and the metabolic syndrome...
February 5, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29421189/utx-moonlighting-in-the-cytoplasm
#7
Ralf Wiedemuth, Sebastian Thieme, Katrin Navratiel, Benjamin Dorschner, Sebastian Brenner
The X-linked histone demethylase UTX has a pivotal role in cellular and developmental processes including embryogenesis, hematopoiesis and cancer. UTX removes di- and trimethyl groups on histone H3 lysine 27, thereby regulating gene expression. But there is growing evidence that UTX displays biological functions independent of its histone demethylase activity. To elucidate these novel functions, it is of great interest to define subcellular localization of UTX. Here we show for the first time that native UTX is primarily localized in the cytoplasm whereas ectopic GFP and Flag-tagged UTX display nuclear and cytoplasmic localization...
February 5, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29407528/the-interplay-between-hif-1-and-calcium-signalling-in-cancer
#8
Iman Azimi
The interplay between hypoxia-inducible factor-1 (HIF-1) and calcium in cancer has begun to be unravelled with recent findings demonstrating the relationships between the two in different cancer types. This is an area of significance considering the crucial roles of both HIF-1 and calcium signalling in cancer progression and metastasis. This review summarises the experimental evidence of the crosstalk between HIF-1 and specific calcium channels, pumps and regulators in the context of cancer. HIF-1 as a master regulator of hypoxic transcriptional responses, mediates transcription of several calcium modulators...
February 3, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29413947/styk1-promotes-cancer-cell-proliferation-and-malignant-transformation-by-activating-pi3k-akt-pathway-in-gallbladder-carcinoma
#9
Yun-Ping Hu, Zeng-Bin Wu, Lin Jiang, Yun-Peng Jin, Huai-Feng Li, Yi-Jian Zhang, Qiang Ma, Yuan-Yuan Ye, Zheng Wang, Yong-Chen Liu, Hong-Zhuan Chen, Ying-Bin Liu
Gallbladder carcinoma (GBC) is the most common malignancy of the biliary tract with extremely poor prognosis. The malignant transformation of GBC is associated with cell proliferation, invasion, and epithelial-mesenchymal transition (EMT). However, the molecular mechanisms underlying GBC progression are poorly understood. We found that serine threonine tyrosine kinase 1 (STYK1) was elevated in GBC and was negatively correlated with clinical outcomes and prognosis. Overexpression of STYK1 in GBC cell lines gave rise to increased cell proliferation, colony formation, migration and invasion, thus committing cells to undergoing EMT...
January 31, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29413946/trichomonas-vaginalis-cathepsin-d-like-aspartic-proteinase-tv-catd-is-positively-regulated-by-glucose-and-degrades-human-hemoglobin
#10
Maria Inocente Mancilla-Olea, Jaime Ortega-López, Elisa E Figueroa-Angulo, Leticia Avila-González, Rosa Elena Cárdenas-Guerra, Jesús F T Miranda-Ozuna, Arturo González-Robles, Mar Saraí Hernández-García, Lizbeth Sánchez-Ayala, Rossana Arroyo
Trichomonas vaginalis genome encodes ∼440 proteases, six of which are aspartic proteases (APs). However, only one belongs to a clan AA (EC 3.4.23.5), family A1 (pepsin A), cathepsin D-like protease. This AP is encoded by an 1113-bp gene (tv-catd), which translates into a 370-aa residues zymogen of 40.7-kDa and a theoretical pI of 4.6, generating a ∼35 kDa active enzyme after maturation (Tv-CatD). The goal of this study was to identify and analyze the effect of glucose on the expression of Tv-CatD at the transcript and protein levels, subcellular localization, and proteolytic activity...
January 29, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29413750/barhl1-is-required-for-the-differentiation-of-inner-ear-hair-cell-like-cells-from-mouse-embryonic-stem-cells
#11
Chao Zhong, Zhenhuang Chen, Xiaocui Luo, Cuicui Wang, Hui Jiang, Jianzhong Shao, Minxin Guan, Liquan Huang, Xiao Huang, Jinfu Wang
Inner ear hair cells are mechanoreceptors responsible for hearing. Pathogenic defects of hair cell-specific genes are one of the major causes of deafness. The BarH class homeobox gene Barhl1 is a deafness gene expressed in developing hair cells, yet the role of Barhl1 during hair cell development remains poorly understood. In the present study, we first established an in vitro differentiation system to efficiently obtain mouse embryonic stem cell (mESC)-derived hair cell-like cells. Subsequently, a mESC line carrying a targeted disruption of Barhl1 was generated using CRISPR/Cas9 technology and subjected to the established in vitro hair cell differentiation protocol...
January 26, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29355757/non-genomic-mechanisms-of-protein-phosphatase-2a-pp2a-regulation-in-cancer
#12
REVIEW
Otto Kauko, Jukka Westermarck
Propagation of transient signals requires coordinated suppression of antagonistic phosphatase activity. Protein phosphatase 2A (PP2A) is a broad specificity serine/threonine phosphatase that functions as an antagonist of many signaling pathways associated with growth and proliferation, and endogenous inhibitory mechanisms suppress PP2A activity in response to mitogenic stimuli. These inhibitory mechanisms, including expression and activation of endogenous inhibitor proteins and phosphoregulation of PP2A subunits, are also engaged by aberrant constitutive activation of mitogenic pathways in cancer...
January 17, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29355756/gla-supplementation-regulates-phd2-mediated-hypoxia-and-mitochondrial-apoptosis-in-dmba-induced-mammary-gland-carcinoma
#13
Subhadeep Roy, Manjari Singh, Atul Rawat, Uma Devi, Swetlana Gautam, Rajnish Kumar Yadav, Jitendra Kumar Rawat, Md Nazam Ansari, Abdulaziz S Saeedan, Dinesh Kumar, Gaurav Kaithwas
The aim of the present study is to evaluate the effect of gamma linolenic acid (GLA) on mitochondrial mediated death apoptosis, hypoxic microenvironment and cholinergic anti-inflammatory pathway against 7, 12-dimethylbenz (a) anthracene (DMBA) induced mammary gland carcinoma. The effects of GLA were evaluated morphologically and biochemically against DMBA induced mammary gland carcinoma. The metabolic study was done for evaluation of biomarkers using 1H NMR. The present study was also verified through immunoblotting and qRT-PCR studies for the evaluation of various pathways...
January 17, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29355755/two-pore-channels-mediated-receptor-operated-ca2-entry-in-pulmonary-artery-smooth-muscle-cells-in-response-to-hypoxia
#14
Yongliang Jiang, Yumin Zhou, Gongyong Peng, Heshen Tian, Dan Pan, Lei Liu, Xing Yang, Chao Li, Wen Li, Ling Chen, Pixin Ran, Aiguo Dai
The aim of this study was to investigate the influence of two-pore channels mediated receptor-operated Ca2+ entry on pulmonary arterial smooth muscle cell (PASMC) under hypoxia conditions. PASMCs were separated using the direct adherent culture method. The cultured cells were observed under optic microscope and the phenotypes of cells were identified by immunohistochemistry. The expression of NAADP was examined by ELISA. CaN, TPC1, TPC2 and NFATc3 protein levels were examined using Western blotting. Real-time PCR was utilized to detect the level of TPC1 and TPC2 mRNA...
January 17, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29355754/blocking-mutation-independent-p53-aggregation-by-emodin-modulates-autophagic-cell-death-pathway-in-lung-cancer
#15
Ejazul Haque, Mohd Kamil, Safia Irfan, Saba Sheikh, Adria Hasan, Aamir Nazir, Snober S Mir
No abstract text is available yet for this article.
January 17, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29341930/activation-of-estrogen-receptor-beta-er%C3%AE-regulates-the-expression-of-n-cadherin-e-cadherin-and-%C3%AE-catenin-in-androgen-independent-prostate-cancer-cells
#16
Rafael de Souza Silva, Ana Paola G Lombardi, Deborah Simão de Souza, Carolina M Vicente, Catarina S Porto
The aim of the present study was to investigate the impact of the activation of estrogen receptors on expression and localization of N-cadherin, E-cadherin and non-phosphorylated β-catenin in androgen-independent prostate cancer cells (PC-3 and DU-145) and in human post pubertal prostate epithelial cells (PNT1A). Expression of N-cadherin was detected in PNT1A and PC-3 cells, but not in DU-145 cells. E-cadherin was detected only in DU-145 cells and β-catenin was detected in all cells studied. N-cadherin and β-catenin were located preferentially in the cellular membrane of PNT1A cells and in the cytoplasm of PC-3 cells...
January 13, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29339198/cd90-cardiac-fibroblasts-reduce-fibrosis-of-acute-myocardial-injury-in-rats
#17
Yuqiao Chang, Cixia Li, Yangyang Jia, Peng Chen, Yonglong Guo, Airong Li, Zhikun Guo
OBJECTIVE: To explore the differentiation tendency of CD90+ cardiac fibroblast (CFs) into cardiomyogenic cells in vitro and repair functions in acute myocardial infarction rats. METHODS: CD90+ subpopulation was sorted from rat CFs by flow cytometry. 10 μmoL/L of 5-Azacytosine (5-aza) was used to induce differentiation of CFs into cardiomyogenic cells. An acute myocardial infarction model was prepared by ligation of the rat left anterior descending coronary artery...
January 12, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29337252/phosphatases-catching-up-with-the-level-of-knowledge-finally-druggable
#18
EDITORIAL
Jukka Westermarck
No abstract text is available yet for this article.
January 11, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29337251/chromatin-organization-regulated-by-ezh2-mediated-h3k27me3-is-required-for-opn-induced-migration-of-bone-marrow-derived-mesenchymal-stem-cells
#19
Lingling Liu, Qing Luo, Jinghui Sun, Yang Ju, Yasuyuki Morita, Guanbin Song
Osteopontin (OPN) is a chemokine-like extracellular matrix-associated protein involved in the migration of bone marrow-derived mesenchymal stem cells (BMSCs). An increasing number of studies have found that chromatin organization may affect cellular migration. However, whether OPN regulates chromatin organization is not understood, nor are the underlying molecular mechanisms. In this study, we investigated the link between chromatin organization and BMSC migration and demonstrated that OPN-mediated BMSC migration leads to elevated levels of heterochromatin marker histone H3 lysine 27 trimethylation (H3K27me3) through the methyltransferase EZH2...
January 11, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29326072/novel-1-4-naphthoquinone-derivatives-induce-apoptosis-via-ros-mediated-p38-mapk-akt-and-stat3-signaling-in-human-hepatoma-hep3b-cells
#20
Chang Liu, Gui-Nan Shen, Ying-Hua Luo, Xian-Ji Piao, Xue-Yuan Jiang, Ling-Qi Meng, Yue Wang, Yi Zhang, Jia-Ru Wang, Hao Wang, Wan-Ting Xu, Jin-Qian Li, Yang Liu, Yi-Qin Wu, Hu-Nan Sun, Ying-Hao Han, Mei-Hua Jin, Yu-Dong Cui, Nan-Zhu Fang, Cheng-Hao Jin
1,4-Naphthoquinone and its derivatives have shown some efficacy as therapeutic compounds for cancer and inflammation, though their clinical application is limited by their side-effects. To reduce the toxicity of these compounds and optimize their effects, we synthesized two 1,4-naphthoquinone derivatives-2-butylsulfinyl- 1,4-naphthoquinone (BSNQ) and 2-octylsulfinyl-1,4-naphthoquinone (OSNQ)-and investigated their effects and underlying mechanisms in hepatocellular carcinoma cells. BSNQ and OSNQ decreased cell viability and significantly induced apoptosis, accompanied by the accumulation of reactive oxygen species (ROS)...
January 8, 2018: International Journal of Biochemistry & Cell Biology
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