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Molecular and Cellular Biochemistry

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https://www.readbyqxmd.com/read/28717923/mirna-200a-induce-cell-apoptosis-in-renal-cell-carcinoma-by-directly-targeting-sirt1
#1
Hao Fu, Wenke Song, Xuancai Chen, Tao Guo, Bin Duan, Xinxi Wang, Yachun Tang, Liang Huang, Chi Zhang
Accumulating evidence indicates that microRNAs are implicated in tumor initiation and progression through negatively regulating oncogenes or tumor suppressor genes. In the present study, we report that the expression of miR-200a was significantly lower in renal cell carcinoma (RCC) specimens and RCC cell lines. Restoration of miR-200a suppressed cell growth, arrested cell cycle progression, and promoted cell apoptosis in RCC cell lines. We next used qRT-PCR array technology to identify Sirtuin 1 (SIRT1) as one of the downregulated proteins during miR-200a overexpression in 786-O cells...
July 17, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28660411/hif1a-overexpression-using-cell-penetrating-dna-binding-protein-induces-angiogenesis-in-vitro-and-in-vivo
#2
Mijeong Jeon, Yooseok Shin, Jaeeun Jung, Ui-Won Jung, Jae-Hoon Lee, Jae-Seung Moon, Ilkoo Kim, Jin-Su Shin, Sang-Kyou Lee, Je Seon Song
Hypoxia-inducible factor-1 alpha (HIF1A) is an important transcription factor for angiogenesis. Recent studies have used the protein transduction domain (PTD) to deliver genes, but the PTD has not been used to induce the expression of HIF1A. This study aimed at using a novel PTD (Hph-1-GAL4; ARVRRRGPRR) to overexpress the HIF1A and identify the effects on angiogenesis in vitro and in vivo. Overexpression of HIF1A was induced using Hph-1-GAL4 in human umbilical vein/vascular endothelium cells (HUVEC). The expression levels of genes were analyzed by the quantitative real-time polymerase chain reaction (qPCR) after 2 and 4 days, respectively...
June 28, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28660410/effect-of-fetal-hypothyroidism-on-myomir-network-and-its-target-gene-expression-profiles-in-heart-of-offspring-rats
#3
Nasibeh Yousefzadeh, Sajad Jeddi, Rafighe Ghiasi, Mohammad Reza Alipour
Thyroid hormone deficiency during fetal life (fetal hypothyroidism) causes intrauterine growth restriction (IUGR). Fetal hypothyroidism (FH) could attenuate normal cardiac functions in the later life of the offspring rats. The aim of this study was to evaluate the contribution of myomiR network and its target gene expression in cardiac dysfunction in fetal hypothyroid rats. Six Pregnant female rats were divided into two groups: Control consumed tap water, and the hypothyroid group received water containing 0...
June 28, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28653238/ampk-nf-%C3%AE%C2%BAb-signaling-pathway-regulated-by-ghrelin-participates-in-the-regulation-of-huvec-and-thp1-inflammation
#4
Min Zhang, Shuping Wang, Zhicheng Pan, Tiantong Ou, Jianwei Ma, Hua Liu, Ruogu Li, Ping Yang, Wenzheng Han, Shaofeng Guan, Xumin Hou, Weiyi Fang, Xinkai Qu
Endothelial inflammation and monocyte plays an essential role in the initiation and progression of atherosclerosis. Ghrelin is beneficial for atherosclerosis progression. However, the detailed and precise molecular mechanisms of how ghrelin regulates endothelial inflammation are not clear. In this study, we investigated the regulation mechanism of ghrelin on TNF-α-activated endothelial inflammation and monocyte adhesion. It was found that TNF-α-induced monocyte adhesion on HUVEC was significantly attenuated by ghrelin...
June 26, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28646353/creb1-regulates-glucose-transport-of-glioma-cell-line-u87-by-targeting-glut1
#5
Jiaying Chen, Can Zhang, Yang Mi, Fuxue Chen, Dongshu Du
Glioma is stemmed from the glial cells in the brain, which is accounted for about 45% of all intracranial tumors. The characteristic of glioma is invasive growth, as well as there is no obvious boundary between normal brain tissue and glioma tissue, so it is difficult to resect completely with worst prognosis. The metabolism of glioma is following the Warburg effect. Previous researches have shown that GLUT1, as a glucose transporter carrier, affected the Warburg effect, but the molecular mechanism is not very clear...
June 23, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28646352/lead-enhancement-of-3t3-l1-fibroblasts-differentiation-to-adipocytes-involves-erk-c-ebp%C3%AE-and-ppar%C3%AE-activation
#6
Claudia Noemí Martini, Matías Gabrielli, Graciela Bonifacino, María Magdalena Codesido, María Del Carmen Vila
Lead (Pb) is an environmental and industrial contaminant that still represents a public health problem. Elevated Pb exposure has been inversely correlated with femoral bone density and associated with osteoporosis. In the last years, it has been shown that inhibition of osteogenesis from mesenchymal stem cells activates adipogenesis and vice versa. In this paper, we investigated the effect of Pb on the differentiation of 3T3-L1 fibroblasts to adipocytes which is the cell model most used to study adipogenesis...
June 23, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28634856/estrogen-receptor-%C3%AE-gene-polymorphism-and-vascular-complications-in-girls-with-type-1-diabetes-mellitus
#7
Bartosz Słomiński, Jolanta Myśliwska, Monika Ryba-Stanisławowska, Maria Skrzypkowska, Małgorzata Myśliwiec
The effect of estrogens is mediated by activation of estrogen receptors (ERs). Because ER-α gene polymorphisms may exert different effects in childhood, we analyzed the associations between the IVS1 -397T>C (PvuII) polymorphism and systemic inflammatory state, proangiogenic factors, frequency of monocyte subsets, lipid profile, blood pressure, and vascular complications in girls with type 1 diabetes mellitus (DM1). We examined 180 young girls with DM1 and 120 healthy age-matched controls. The analysis concerned PvuII polymorphism of the ER-α gene as well as the levels of serum inflammatory markers (CRP, IL-6, TNF-α), proangiogenic factors (VEGF, angiogenin), 17β-estradiol, values of monocyte subsets (CD14(++)CD16(-) and CD14(+)CD16(+)), lipid profile, and blood pressure...
June 20, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28634855/alpha-linolenic-acid-decreases-apoptosis-and-oxidized-phospholipids-in-cardiomyocytes-during-ischemia-reperfusion
#8
Riya Ganguly, Devin Hasanally, Aleksandra Stamenkovic, Thane G Maddaford, Rakesh Chaudhary, Grant N Pierce, Amir Ravandi
The omega-3 fatty acid, alpha linolenic acid (ALA) found in plant-derived foods induces significant cardiovascular benefits when ingested. ALA may be cardioprotective during ischemia; however, the mechanism(s) responsible for this effect is unknown. Isolated adult rat cardiomyocytes were exposed to medium containing ALA for 24 h and then exposed to non-ischemic (control), simulated ischemia (ISCH), or simulated ischemia/reperfusion (IR) conditions. Cardiomyocyte phospholipids were extracted and analyzed by an HPLC/electrospray ionization tandem mass spectrometry system...
June 20, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28634854/micrornas-associated-with-inflammation-in-shoulder-tendinopathy-and-glenohumeral-arthritis
#9
Finosh G Thankam, Chandra S Boosani, Matthew F Dilisio, Devendra K Agrawal
Inflammation is associated with glenohumeral arthritis and rotator cuff tendon tears. Epigenetically, miRNAs tightly regulate various genes involved in the inflammatory response. Alterations in the expression profile of miRNAs and the elucidation of their target genes with respect to the pathophysiology could improve the understanding of their regulatory role and therapeutic potential. Here, we screened key miRNAs that mediate inflammation and linked with JAK2/STAT3 pathway with respect to the coincidence of glenohumeral arthritis in patients suffering from rotator cuff injury (RCI)...
June 20, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28631251/regulation-of-cardiac-myocyte-cell-death-and-differentiation-by-myocardin
#10
REVIEW
Joseph W Gordon
Myocardin is a cardiac- and smooth muscle-enriched transcriptional co-activator that was originally described as an interacting partner of the serum response factor. Shortly after myocardin's discovery, a wealth of published literature described the role of myocardin as a regulator of smooth muscle differentiation and phenotype modulation, while gene-targeting studies confirmed the essential role of myocardin in vascular development. More recently, myocardin has been implicated as an important regulator of cardiac myocyte differentiation in studies demonstrating direct programming of fibroblasts towards the cardiac lineage...
June 19, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28620820/cytoglobin-inhibits-migration-through-pi3k-akt-mtor-pathway-in-fibroblast-cells
#11
Selami Demirci, Ayşegül Doğan, Hüseyin Apdik, Emre Can Tuysuz, Sukru Gulluoglu, Omer Faruk Bayrak, Fikrettin Şahin
Cell proliferation and migration are crucial in many physiological processes including development, cancer, tissue repair, and wound healing. Cell migration is regulated by several signaling molecules. Identification of genes related to cell migration is required to understand molecular mechanism of non-healing chronic wounds which is a major concern in clinics. In the current study, the role of cytoglobin (CYGB) gene in fıbroblast cell migration and proliferation was described. L929 mouse fibroblast cells were transduced with lentiviral particles for CYGB and GFP, and analyzed for cell proliferation and migration ability...
June 15, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28620819/cellular-growth-and-tube-formation-of-htr8-svneo-trophoblast-effects-of-exogenously-added-fatty-acid-binding-protein-4-and-its-inhibitor
#12
Sanjay Basak, Arnab Sarkar, Santosh Mathapati, Asim K Duttaroy
Adequate placental angiogenesis is critical for the establishment of the placental circulation and thus for normal feto-placental growth and development. Fatty acid-binding protein-4 (FABP4) plays a pro-angiogenic role in endothelial cells; however, very little information is available in placental first trimester trophoblast cells. Here we report that exogenously added FABP4 (exo-FABP4) stimulated tube formation (as a measure of in vitro angiogenesis) in HTR8/SVneo trophoblastic cells. HTR-8/SVneo cells were incubated in the presence of exogenously added FABP4 at different concentrations and time points...
June 15, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28620818/effects-of-atorvastatin-and-simvastatin-on-oxidative-stress-in-diet-induced-hyperhomocysteinemia-in-wistar-albino-rats-a-comparative-study
#13
T Nikolic, V Zivkovic, I Srejovic, I Stojic, N Jeremic, J Jeremic, K Radonjic, S Stankovic, R Obrenovic, D Djuric, V Jakovljevic
Considering the well-known antioxidant properties of statins, it seems important to assess their impact on major markers of oxidative stress (superoxide anion radical, nitric oxide, and index of lipid peroxidation) to compare the antioxidative potentials of atorvastatin and simvastatin during the different degrees of hyperhomocysteinemia (HHcy) in rats. This study was conducted on adult male Wistar albino rats (n = 90; 4 weeks old; 100 ± 15 g body mass) in which HHcy was achieved by dietary manipulation...
June 15, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28612231/epsilon-aminocaproic-acid-prevents-high-glucose-and-insulin-induced-invasiveness-in-mda-mb-231-breast-cancer-cells-modulating-the-plasminogen-activator-system
#14
Rubí Viedma-Rodríguez, María Guadalupe Martínez-Hernández, Luis Antonio Flores-López, Luis Arturo Baiza-Gutman
Obesity and type II diabetes mellitus have contributed to the increase of breast cancer incidence worldwide. High glucose concentration promotes the proliferation of metastatic cells, favoring the activation of the plasminogen/plasmin system, thus contributing to tumor progression. The efficient formation of plasmin is dependent on the binding of plasminogen to the cell surface. We studied the effect of ε-aminocaproic acid (EACA), an inhibitor of the binding of plasminogen to cell surface, on proliferation, migration, invasion, epithelial-mesenchymal transition (EMT), and plasminogen activation system, in metastatic MDA-MB-231 breast cancer cells grown in a high glucose microenvironment and treated with insulin...
June 13, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28608226/blocking-rhoa-rock-inhibits-the-pathogenesis-of-pemphigus-vulgaris-by-suppressing-oxidative-stress-and-apoptosis-through-tak1-nod2-mediated-nf-%C3%AE%C2%BAb-pathway
#15
Junqin Liang, Xuewen Zeng, Yilinuer Halifu, Wenjing Chen, Fengxia Hu, Peng Wang, Huan Zhang, Xiaojing Kang
Oxidative stress and apoptosis play critical roles in pemphigus vulgaris (PV). The main aim of the present study was to investigate the effects of RhoA/ROCK signaling on UVB-induced oxidative damage, and to delineate the molecular mechanisms involved in the UVB-mediated inflammatory and apoptotic response. In HaCaT cells, we observed that blockage of RhoA/ROCK signaling with the inhibitor CT04 or Y27632 greatly inhibited the UVB-mediated increase in intracellular reactive oxygen species (ROS). Additionally, inhibition of RhoA/ROCK signaling reduced UVB-induced apoptosis, as exemplified by a reduction in DNA fragmentation, and also elevated anti-apoptotic Bcl-2 protein, concomitant with reduced levels of pro-apoptotic protein Bax, caspase-3 cleavage and decreased PARP-1 protein...
June 12, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28597245/protein-kinase-ck2-regulates-redox-homeostasis-through-nf-%C3%AE%C2%BAb-and-bcl-xl-in-cardiomyoblasts
#16
Susanne Schaefer, Barbara Guerra
Oxygen consumption is particularly elevated in cardiac cells as they are equipped with a large number of mitochondria and high levels of respiratory chain components. Consequently, production of reactive oxygen species (ROS) is tightly controlled as an imbalance in redox reactions can lead to irreversible cellular damage. siRNA-mediated down-regulation of protein kinase CK2 has been implicated in the accumulation of ROS in cells. The present study was undertaken in order to investigate the role of CK2 in redox homeostasis in cardiomyoblasts...
June 8, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28593566/cellular-and-molecular-targets-for-the-immunotherapy-of-hepatocellular-carcinoma
#17
REVIEW
Vikrant Rai, Joe Abdo, Abdullah N Alsuwaidan, Swati Agrawal, Poonam Sharma, Devendra K Agrawal
Liver cancer is the sixth most common cancer worldwide and 3rd most common cause of cancer-related death. Hepatocellular carcinoma (HCC) represents more than 90% of primary liver cancer and is a major public health problem. Due to the advanced stages of HCC at the time of diagnosis, utilizing the conventional treatment for solid tumors frequently ends with treatment failure, recurrence, or poor survival. HCC is highly refractory to chemotherapy and other systemic treatments, and locoregional therapies or selective internal radiation therapies are largely palliative...
June 7, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28593565/aggregatibacter-actinomycetemcomitans-regulates-the-expression-of-integrins-and-reduces-cell-adhesion-via-integrin-%C3%AE-5-in-human-gingival-epithelial-cells
#18
Shinsuke Kochi, Keisuke Yamashiro, Shoichi Hongo, Tadashi Yamamoto, Yuki Ugawa, Masayuki Shimoe, Mari Kawamura, Chiaki Hirata-Yoshihara, Hidetaka Ideguchi, Hiroshi Maeda, Shogo Takashiba
Gingival epithelial cells form a physiological barrier against bacterial invasion. Excessive bacterial invasion destroys the attachment between the tooth surface and the epithelium, resulting in periodontitis. Integrins play a significant role in cell attachment; therefore, we hypothesized that bacterial infection might decrease the expressions of these integrins in gingival epithelial cells, resulting in reduced cell adhesion. Immortalized human gingival epithelial cells were co-cultured with Aggregatibacter actinomycetemcomitans Y4 (Aa Y4), and the gene expression levels of IL-8, proliferating cell nuclear antigen (PCNA), and integrins (α2, α3, α5, β4, and β6) were measured using quantitative reverse transcription polymerase chain reaction...
June 7, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28593564/activation-of-adrenergic-receptor-in-h9c2-cardiac-myoblasts-co-stimulates-nox2-and-the-derived-ros-mediate-the-downstream-responses
#19
Nikhat Saleem, Shyamal K Goswami
In recent years, NADPH oxidases (Noxes) have emerged as an important player in cardiovascular pathophysiology. Despite the growing evidences on the role of specific Nox isoforms, mechanisms of their activation, targets of reactive oxygen species (ROS) generated, and their downstream effects are poorly understood as yet. In this study, we treated H9c2 cardiac myoblasts with norepinephrine (NE, 2 µM), inducing ROS generation that was inhibited by Nox2-specific peptide inhibitor gp91ds-tat. Organelle-specific hydrogen peroxide-sensitive probe HyPer showed that the site of ROS generation is primarily in the cytosol, to some extent in the endoplasmic reticulum (ER) but not the mitochondria...
June 7, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28589371/activator-protein-1-ap-1-a-bridge-between-life-and-death-in-lung-epithelial-a549-cells-under-hypoxia
#20
Seema Yadav, Namita Kalra, Lilly Ganju, Mrinalini Singh
Activator protein-1 (AP-1) transcription factor plays a central role in hypoxia to modulate the expression of genes that decides the fate of the cell. The aim of the present study was to explore the role of AP-1 subunits in lung epithelial (A549) cells under hypoxia. Cell cycle studies by flow cytometry indicated that cell viability was unaffected by the initial hypoxia exposure (0.5% O2 at 37 °C) for 6 and 12 h. However, both transient cell cycle arrest and cell death was detected at 24 and 48 h. Flow cytometry and spectrofluorometry data confirmed the increase in ROS levels...
June 6, 2017: Molecular and Cellular Biochemistry
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