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International Journal of Biochemistry & Cell Biology

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https://www.readbyqxmd.com/read/29223466/long-term-pulmonary-and-cardiovascular-morbidities-of-neonatal-hyperoxia-exposure-in-mice
#1
Renuka T Menon, Amrit Kumar Shrestha, Corey L Reynolds, Roberto Barrios, Binoy Shivanna
Pulmonary hypertension (PH) frequently occurs in infants with bronchopulmonary dysplasia (BPD), causing increased mortality and right ventricular (RV) dysfunction that persists into adulthood. A first step in developing better therapeutic options is identifying and characterizing an appropriate animal model. Previously, we characterized the short-term morbidities of a model in which C57BL/6J wild-type (WT) mice were exposed to 70% O2 (hyperoxia) during the neonatal period. Here, we aimed to determine the long-term morbidities using lung morphometry, echocardiography (Echo), and cardiac magnetic resonance imaging (cMRI)...
December 7, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29208568/overexpression-of-elf3-facilitates-cell-growth-and-metastasis-through-pi3k-akt-and-erk-signaling-pathways-in-non-small-cell-lung-cancer
#2
Hao Wang, Zhiqi Yu, Shaofen Huo, Zheng Chen, Zhiling Ou, Jiajie Mai, Shangwei Ding, Jinshan Zhang
ELF3 is one of the member of transcription factors from E-twenty-six family, its role varies in different types of cancer. However, the role and specific mechanisms of ELF3 in the development of non-small cell lung cancer (NSCLC) still remains largely unknown. In our study, ELF3 was observed to be upregulated in NSCLC tissues compared to the corresponding normal lung tissue at mRNA and protein levels, and its expression level was correlated with the overall survival of patients with NSCLC. Silencing of the ELF3 gene in NSCLC cells inhibited the proliferation and metastasis significantly in vitro and in vivo...
December 2, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29208567/phosphorylation-of-threonine-residues-on-shc-promotes-ligand-binding-and-mediates-crosstalk-between-mapk-and-akt-pathways-in-breast-cancer-cells
#3
K M Suen, C C Lin, C Seiler, R George, G Poncet-Montange, A B Biter, Z Ahmed, S T Arold, J E Ladbury
Scaffold proteins play important roles in regulating signalling network fidelity, the absence of which is often the basis for diseases such as cancer. In the present work, we show that the prototypical scaffold protein Shc is phosphorylated by the extracellular signal-regulated kinase, Erk. In addition, Shc threonine phosphorylation is specifically up-regulated in two selected triple-negative breast cancer (TNBC) cell lines. To explore how Erk-mediated threonine phosphorylation on Shc might play a role in the dysregulation of signalling events, we investigated how Shc affects pathways downstream of EGF receptor...
December 2, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29208566/mir-26a-and-mir-26b-mediate-osteoarthritis-progression-by-targeting-fut4-via-nf-%C3%AE%C2%BAb-signaling-pathway
#4
Jialei Hu, Zi Wang, Yue Pan, Jia Ma, Xiaoyan Miao, Xia Qi, Huimin Zhou, Li Jia
Osteoarthritis (OA) is the most common joint disease, characterized by articular cartilage degradation and changes in all other joint tissues. MicroRNAs (miRNAs) play an important role in mediating the main risk factors for OA. This study aimed to investigate the effect of miR-26a/26b on the proliferation and apoptosis of human chondrocytes by targeting fucosyltransferase 4 (FUT4) through NF-κB signaling pathway. We revealed the differential expression profiles of FUT4 and miR-26a/26b in the articular cartilage tissues of OA patients and normal people...
December 2, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29191734/splenomegaly-pathophysiological-bases-and-therapeutic-options
#5
Campbell V McKenzie, Chanukya K Colonne, Jia Hao Yeo, Stuart T Fraser
The spleen is the largest immune organ in the human body and is also essential for red blood cell homeostasis and iron recycling. An average human spleen is approximately 10 centimetres in length and weighs 150g. Pathological conditions can result in the spleen weighing in excess of 2000g and extending over 30 centrimetres in length. This remarkable property of the spleen to expand is termed splenomegaly. Splenomegaly can occur as a physiological response to stress or as a chronic process that is often detrimental to the wellbeing of the individual...
December 2, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29203233/glycerophosphodiesterase-gde2-gdpd5-affects-pancreas-differentiation-in-zebrafish
#6
Michiel van Veen, Laurie A Mans, Elisa Matas-Rico, Jason van Pelt, Anastassis Perrakis, Wouter H Moolenaar, Anna-Pavlina G Haramis
Notch signaling plays an essential role in the proliferation, differentiation and cell fate determination of various tissues, including the developing pancreas. One regulator of the Notch pathway is GDE2 (or GDPD5), a transmembrane ecto-phosphodiesterase that cleaves GPI-anchored proteins at the plasma membrane, including a Notch ligand regulator. Here we report that Gdpd5-knockdown in zebrafish embryos leads to developmental defects, particularly, impaired motility and reduced pancreas differentiation, as shown by decreased expression of insulin and other pancreatic markers...
December 1, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29203232/thioredoxin-interacting-protein-deficiency-ameliorates-diabetic-retinal-angiogenesis
#7
Jialiang Duan, Chunyang Du, Yonghong Shi, Danyan Liu, Jingxue Ma
Diabetic retinopathy is the leading cause of blindness among working-aged adults around the world. Hyperglycemia and intraocular vascular endothelial growth factor (VEGF) over-accumulation are essential for the progression of diabetic retinopathy, which eventually results in proliferative diabetic retinopathy, characterized by pathologic angiogenesis and impaired vision. Thioredoxin-interacting protein (TXNIP) was highly induced in retinal endothelial cells under diabetic conditions. However, the role of TXNIP in diabetes-associated retinal angiogenesis remains elusive...
December 1, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29197626/microglia-key-players-in-neurodevelopment-and-neuronal-plasticity
#8
Luba Sominsky, Simone De Luca, Sarah J Spencer
Microglia are the primary innate immune cells in the CNS. Since their initial discovery and characterization, decades of research have revealed their unique roles not only in maintaining immune homeostasis, but also being indispensable to brain development and cognitive function. As such, microglia drive synaptogenesis, synaptic pruning, neurogenesis and neuronal activity. Microglia-specific mutations are implicated in several neurodevelopmental disorders, and dysregulation of microglial function is strongly linked to several pathologies, including cognitive decline and Alzheimer's disease...
December 1, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29197627/mir-34a-regulates-mitochondrial-content-and-fat-ectopic-deposition-induced-by-resistin-through-the-ampk-ppar%C3%AE-pathway-in-hepg2-cells
#9
Fengyun Wen, Chaoqing An, Xiaotian Wu, Yi Yang, Jingjing Xu, Yasong Liu, Chunming Wang, Leitong Nie, Hubin Fang, Zaiqing Yang
Resistin is an adipocyte-derived cytokine and was named for its role in the development of insulin resistance. Increased serum resistin levels are also associated with steatohepatitis and non-alcoholic fatty liver disease. In a previous study, resistin was observed to reduce mitochondrial content and upregulate miR-34a significantly in the liver. In this study, male C57BL/6 mice were injected with agomir-34a or control agomir, and HepG2 cells were transfected with miR-34a mimics or inhibitors to assess their role in resistin-induced fat deposition...
November 29, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29180304/functional-analysis-of-corin-protein-domains-required-for-pcsk6-mediated-activation
#10
Shenghan Chen, Hao Wang, Heng Li, Yue Zhang, Qingyu Wu
Atrial natriuretic peptide (ANP) is a cardiac hormone essential for normal blood pressure and cardiac function. Corin is a transmembrane serine protease that activates ANP. Recently, we identified proprotein convertase subtilisin/kexin-6 (PCSK6), also called PACE4, as the long-sought corin activator. Both corin and PCSK6 are expressed in cardiomyocytes, but corin activation occurs only on the cell surface. It remains unknown if cell membrane association is needed for PCSK6 to activate corin. Here we expressed corin deletion mutants in HEK293 cells to analyze the domain structures required for PCSK6-mediated activation...
November 24, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29175387/baicalein-inhibits-cervical-cancer-progression-via-downregulating-long-noncoding-rna-bdlnr-and-its-downstream-pi3k-akt-pathway
#11
Xiaolan Yu, Jiyi Xia, Yan Li, Yong Cao, Li Tang, Yingcheng Yang, Feng Chen
Baicalein, an active flavonoid extracted from the root of Scutellaria baicalensis Georgi, has fascinating anti-cancer effects on many cancers. Our previous study also found that baicalein inhibited cervical cancer cell proliferation and migration, and induced cervical cancer cell apoptosis and cell cycle arrest. However, the molecular mechanisms underlying the anti-cancer effects of baicalein are largely unknown. In this study, we identified a novel long noncoding RNA (lncRNA), which is downregulated by baicalein in a dose- and time-dependent manner in cervical cancer...
November 23, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29174311/mdivi-1-alleviates-blood-brain-barrier-disruption-and-cell-death-in-experimental-traumatic-brain-injury-by-mitigating-autophagy-dysfunction-and-mitophagy-activation
#12
Chengliang Luo, Qiong Wu, Qianqian Li, Xinmu Zhang, Xiuyu Shi, Xin Wang, Luyang Tao
Dynamin-related protein 1 (Drp1) is a key regulator of mitochondrial fission. Our previous studies proved that the inhibition of Drp1 may help attenuate traumatic brain injury (TBI)-induced functional outcome and cell death through maintaining normal mitochondrial morphology and inhibiting activation of apoptosis. However, the molecular mechanisms of Drp1 after TBI remain poorly understood. In this study, we investigated the role of mitochondrial division inhibitor 1 (Mdivi-1), a small molecule inhibitor of Drp1, in underlying mechanisms of general autophagy and mitochondria autophagy (mitophagy) after experimental TBI...
November 21, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29104163/global-profiling-of-rbm24-bound-rnas-uncovers-a-multi-tasking-rna-binding-protein
#13
Yu Lin, Kar Tong Tan, Jing Liu, Xu Kong, Zhengrong Huang, Xiu Qin Xu
RNA binding proteins serve as critical molecular switches in a multitude of post-transcriptional regulatory processes. In the heart and muscles, the tissue specific RNA binding protein, Rbm24, is known to play important developmental roles via driving different post-transcriptional processes. Nonetheless, the currently identified molecular targets and regulatory pathways seem inadequate to completely explain the observed developmental effects upon Rbm24 knockdown/knockout. Here, by performing RNA Immunoprecipitation and coupling it to microarrays (RIP-Chip), we have generated an atlas of the mRNA binding repertoire of Rbm24...
November 20, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29158164/lmo7-exerts-an-effect-on-mitosis-progression-and-the-spindle-assembly-checkpoint
#14
Yao-Wei Tzeng, Dai-Yu Li, Yvan Chen, Cheng-Hsiu Yang, Chih-Yun Chang, Yue-Li Juang
LMO7 (LIM domain only 7) is a transcription regulator for expression of many Emery-Dreifuss muscular dystrophy-relevant genes, and binds to α-actinin and AF6/afadin at adherens junctions for epithelial cell-cell adhesion. In this study, we found that human LMO7 interacted with the spindle assembly checkpoint (SAC) protein MAD1. LMO7 colocalized with actin filaments at the cell membrane but did not colocalize with MAD1 at kinetochores in prometaphase. Our observations reveal that overexpression but not depletion of LMO7 caused a SAC defect, and that the LIM domain of LMO7 was a determinant of its ability to interfere with kinetochore localization of the SAC proteins MAD2 and BUBR1 and cause a SAC defect though the LIM peptide itself did neither bind to MAD1, MAD2 and BUBR1 nor localize to the actin filaments...
November 17, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29155304/metabolomics-taking-snapshots-of-cellular-physiology-in-health-and-disease
#15
EDITORIAL
Joanna Kargul, Irmgard Irminger-Finger, Geoff J Laurent
No abstract text is available yet for this article.
November 15, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29128684/mapk-p38-regulates-inflammatory-gene-expression-via-tristetraprolin-doing-good-by-stealth
#16
J D O'Neil, A J Ammit, A R Clark
Tristetraprolin (TTP) is an RNA-destabilizing protein that exerts profound anti-inflammatory effects by inhibiting the expression of tumour necrosis factor and many other inflammatory mediators. The mitogen-activated protein kinase (MAPK) p38 signaling pathway controls the strength and duration of inflammatory responses by regulating both the expression and function of TTP. The kinase MK2 (MAPK activated kinase 2) is activated by MAPK p38, and in turn phosphorylates TTP at two critical serine residues. One consequence of these phosphorylations is the protection of TTP from proteasome-mediated degradation...
November 8, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29128683/diy-do-imaging-yourself-conventional-microscopes-as-powerful-tools-for-in-vivo-investigation
#17
Maísa Mota Antunes, Érika de Carvalho, Gustavo Batista Menezes
Intravital imaging has been increasingly employed in cell biology studies and it is becoming one of the most powerful tools for in vivo investigation. Although some protocols can be extremely complex, most intravital imaging procedures can be performed using basic surgery and animal maintenance techniques. More importantly, regular confocal microscopes - the same that are used for imaging immunofluorescence slides - can also acquire high quality intravital images and movies after minor adaptations. Here we propose minimal adaptations in stock microscopes that allow major improvements in different fields of scientific investigation...
November 8, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29104162/how-to-bridge-metabolomics-and-genomics
#18
EDITORIAL
Luigi Atzori, Julian L Griffin
No abstract text is available yet for this article.
November 8, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29108877/pim-kinases-from-survival-factors-to-regulators-of-cell-motility
#19
REVIEW
Niina M Santio, Päivi J Koskinen
PIM kinases are oncogenic serine/threonine kinases, the expression and activities of which are tightly regulated in normal tissues, but upregulated in many types of human malignancies, including both hematological and solid cancers. Since high PIM expression levels have been connected to cancer progression and poor patient survival, PIM kinases have become attractive targets for drug development. Many downstream targets have also been identified, through which PIM kinases promote cell survival, proliferation and metabolism...
November 3, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29108876/a-fine-balancing-act-a-delicate-kinase-phosphatase-equilibrium-that-protects-against-chromosomal-instability-and-cancer
#20
REVIEW
Marilia Henriques Cordeiro, Richard John Smith, Adrian Thomas Saurin
Cancer cells rewire signalling networks to acquire specific hallmarks needed for their proliferation, survival, and dissemination throughout the body. Although this is often associated with the constitutive activation or inactivation of protein phosphorylation networks, there are other contexts when the dysregulation must be much milder. For example, chromosomal instability is a widespread cancer hallmark that relies on subtle defects in chromosome replication and/or division, such that these processes remain functional, but nevertheless error-prone...
November 3, 2017: International Journal of Biochemistry & Cell Biology
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