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https://www.readbyqxmd.com/read/28528406/responsiveness-to-pamidronate-treatment-is-not-related-to-the-genotype-of-type-i-collagen-in-patients-with-osteogenesis-imperfecta
#1
Junko Kanno, Akiko Saito-Hakoda, Shigeo Kure, Ikuma Fujiwara
Osteogenesis imperfecta (OI) is a heritable disorder characterized by increased bone fragility, low bone mass, dentinogenesis imperfecta, and blue sclerae. Most patients with OI have a mutation in either COL1A1 or COL1A2, which encode type I collagen. We screened these genes in Japanese patients with OI and compared their genotype and phenotype, focusing on the clinical response to treatment with pamidronate. Sequencing analysis of the genes in 19 families revealed 15 mutations, of which ten were missense mutations, thee were nonsense mutations, and two were frameshift mutations...
May 20, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28527238/a-widespread-family-of-serine-threonine-protein-phosphatases-shares-a-common-regulatory-switch-with-proteasomal-proteases
#2
Niels Bradshaw, Vladimir M Levdikov, Christina M Zimanyi, Rachelle Gaudet, Anthony J Wilkinson, Richard Losick
PP2C phosphatases control biological processes including stress responses, development, and cell division in all kingdoms of life. Diverse regulatory domains adapt PP2C phosphatases to specific functions, but how these domains control phosphatase activity was unknown. We present structures representing active and inactive states of the PP2C phosphatase SpoIIE from Bacillus subtilis. Based on structural analyses and genetic and biochemical experiments, we identify an α-helical switch that shifts a carbonyl oxygen into the active site to coordinate a metal cofactor...
May 20, 2017: ELife
https://www.readbyqxmd.com/read/28527102/studies-of-environmental-risk-factors-in-amyotrophic-lateral-sclerosis-als-and-a-phase-i-clinical-trial-of-l-serine
#3
Walter G Bradley, R X Miller, T D Levine, E W Stommel, P A Cox
β-N-Methylamino-L-alanine (BMAA) has been linked to Guam ALS/PDC and shown to produce neurodegeneration in vitro and in vivo (Drosophila, mice, rats, primates). BMAA misincorporation into neuroproteins produces protein misfolding and is inhibited by L-serine. Case-control studies in Northern New England indicate that living near to water-bodies with cyanobacterial blooms increases the risk of developing amyotrophic lateral sclerosis (ALS). The distribution of addresses of ALS cases in New Hampshire, Vermont, and Florida was compared to that of controls...
May 19, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28526890/a-heteromeric-molecular-complex-regulates-the-migration-of-lung-alveolar-epithelial-cells-during-wound-healing
#4
Manik C Ghosh, Patrudu S Makena, Joseph Kennedy, Bin Teng, Charlean Luellen, Scott E Sinclair, Christopher M Waters
Alveolar type II epithelial cells (ATII) are instrumental in early wound healing in response to lung injury, restoring epithelial integrity through spreading and migration. We previously reported in separate studies that focal adhesion kinase-1 (FAK) and the chemokine receptor CXCR4 promote epithelial repair mechanisms. However, potential interactions between these two pathways were not previously considered. In the present study, we found that wounding of rat ATII cells promoted increased association between FAK and CXCR4...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526617/cyclin-dependent-kinase-5-a-novel-avenue-for-alzheimer-s-disease
#5
REVIEW
Anisha S Bhounsule, Lokesh Kumar Bhatt, Kedar S Prabhavalkar, Manisha Oza
Alzheimer's disease (AD) is one of the most frequently encountered diseases in adults with progressive loss of memory and behavioral changes. Inspite of there being an intense research in the field of AD, only a few chemical entities exhibiting anti-AD activity make it through the clinical trials and it is thus need of an hour to develop new drugs or repurpose the existing ones for better management of Alzheimer's disease. Novel therapeutic targets can influence drug discovery in the field of AD. Cyclin Dependent Kinase 5 (Cdk5) which is a serine/threonine kinase can prove to be an upcoming beneficial target to be studied for treating AD...
May 17, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28526008/cleavage-of-the-urokinase-receptor-upar-on-oral-cancer-cells-regulation-by-transforming-growth-factor-%C3%AE-1-tgf-%C3%AE-1-and-potential-effects-on-migration-and-invasion
#6
Synnove Norvoll Magnussen, Elin Hadler-Olsen, Daniela Elena Costea, Eli Berg, Cristiane Cavalcanti Jacobsen, Bente Mortensen, Tuula Salo, Inigo Martinez-Zubiaurre, Jan-Olof Winberg, Lars Uhlin-Hansen, Gunbjorg Svineng
BACKGROUND: Urokinase plasminogen activator (uPA) receptor (uPAR) is up-regulated at the invasive tumour front of human oral squamous cell carcinoma (OSCC), indicating a role for uPAR in tumour progression. We previously observed elevated expression of uPAR at the tumour-stroma interface in a mouse model for OSCC, which was associated with increased proteolytic activity. The tumour microenvironment regulated uPAR expression, as well as its glycosylation and cleavage. Both full-length- and cleaved uPAR (uPAR (II-III)) are involved in highly regulated processes such as cell signalling, proliferation, migration, stem cell mobilization and invasion...
May 19, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28525379/pdz-binding-kinase-regulated-by-foxm1-enhances-malignant-phenotype-via-activation-of-%C3%AE-catenin-signaling-in-hepatocellular-carcinoma
#7
Yu-Feng Yang, Ying-Hua Pan, Yun Cao, Jia Fu, Xia Yang, Mei-Fang Zhang, Qiu-Hong Tian
Deregulation of serine/threonine kinase contributes to the development and progression of human diseases. PDZ-binding kinase (PBK) has been implicated in the malignant process of cancers, but its role and clinical significance in hepatocellular carcinoma (HCC) remains unclear. Here we show that PBK expression is increased and associated with larger tumor size, presence of vascular invasion, lymph node metastasis and poor overall and disease-free survivals in two independent cohorts of 879 patients with HCC...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28524452/subtilisin-like-proteases-in-plant-defence-the-past-the-present-and-beyond
#8
REVIEW
Joana Figueiredo, Marta Sousa Silva, Andreia Figueiredo
Subtilisin-like proteases (or subtilases) are a very diverse family of serine peptidases present in many organisms, but mostly in plants. With a broad spectrum of biological functions ranging from protein turnover and plant development to interactions with the environment, subtilases have been gaining more attention for their involvement in plant defence responses against the most diverse pathogens. On the last 5 years, the number of published studies associating plant subtilases with pathogen resistance and plant immunity increased tremendously...
May 19, 2017: Molecular Plant Pathology
https://www.readbyqxmd.com/read/28524164/ripped-for-neuroinflammation
#9
Bart Tummers, Douglas R Green
Activation of the receptor interacting serine/threonine kinase (RIPK) 3 mediates an inflammatory type of cell death called necroptosis; in addition, RIPK3 has necroptosis-independent roles in inflammation, although these are not well defined. In a recent study published in Cell, Daniels and colleagues demonstrate that RIPK3 controls West Nile virus infection by promoting neuroinflammation in the central nervous system without affecting neuronal death.
May 19, 2017: Cell Research
https://www.readbyqxmd.com/read/28524070/tmprss2-and-mspl-facilitate-trypsin-independent-porcine-epidemic-diarrhea-virus-replication-in-vero-cells
#10
Wen Shi, Wenlu Fan, Jing Bai, Yandong Tang, Li Wang, Yanping Jiang, Lijie Tang, Min Liu, Wen Cui, Yigang Xu, Yijing Li
Type II transmembrane serine proteases (TTSPs) facilitate the spread and replication of viruses such as influenza and human coronaviruses, although it remains unclear whether TTSPs play a role in the progression of animal coronavirus infections, such as that by porcine epidemic diarrhea virus (PEDV). In this study, TTSPs including TMPRSS2, HAT, DESC1, and MSPL were tested for their ability to facilitate PEDV replication in Vero cells. Our results showed that TMPRSS2 and MSPL played significant roles in the stages of cell-cell fusion and virus-cell fusion, whereas HAT and DESC1 exhibited weaker effects...
May 18, 2017: Viruses
https://www.readbyqxmd.com/read/28523013/genome-analysis-of-conserved-dehydrin-motifs-in-vascular-plants
#11
Ahmad A Malik, Michael Veltri, Kelly F Boddington, Karamjeet K Singh, Steffen P Graether
Dehydrins, a large family of abiotic stress proteins, are defined by the presence of a mostly conserved motif known as the K-segment, and may also contain two other conserved motifs known as the Y-segment and S-segment. Using the dehydrin literature, we developed a sequence motif definition of the K-segment, which we used to create a large dataset of dehydrin sequences by searching the Pfam00257 dehydrin dataset and the Phytozome 10 sequences of vascular plants. A comprehensive analysis of these sequences reveals that lysine residues are highly conserved in the K-segment, while the amino acid type is often conserved at other positions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28522812/selection-and-characterization-of-a-dna-aptamer-inhibiting-coagulation-factor-xia
#12
David A Donkor, Varsha Bhakta, Louise J Eltringham-Smith, Alan R Stafford, Jeffrey I Weitz, William P Sheffield
Factor XIa (FXIa) is a serine protease that catalyzes the activation of Factor IX (FIX) in the blood coagulation cascade. FXIa and its precursor FXI are emergent therapeutic targets for the development of safer anticoagulant agents. Here, we sought a novel DNA-based agent to inhibit FXIa. Towards this goal, an 80 base, single-stranded DNA aptamer library (containing a 40 base randomized core) was screened for FXIa-binding candidates, using ten rounds of positive and negative selection. After selection, 6 of 89 different sequences inhibited FXIa-mediated chromogenic substrate S2366 cleavage...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28522715/complete-draft-genome-sequence-of-the-actinobacterium-nocardiopsis-sinuspersici-utmc102-dsm-45277-t-which-produces-serine-protease
#13
Bogdan Tokovenko, Christian Rückert, Jörn Kalinowski, Fatemeh Mohammadipanah, Joachim Wink, Birgit Rosenkränzer, Maksym Myronovskyi, Andriy Luzhetskyy
The genome sequence of alkalohalophilic actinobacterium Nocardiopsis sinuspersici UTMC102 is provided. N. sinuspersici UTMC102 produces a highly active serine alkaline protease, and contains at least 11 gene clusters encoding the biosynthesis of secondary metabolites. The N. sinuspersici UTMC102 genome was assembled into a single chromosomal scaffold.
May 18, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28522588/a-potential-mechanism-for-adc-induced-neutropenia-role-of-neutrophils-in-their-own-demise
#14
Hui Zhao, Sara Gulesserian, Maria Christina Malinao, Sathish Kumar-Ganesan, James Song, Mi Sook Chang, Melissa M Williams, Zhilan Zeng, Michael Mattie, Brian A Mendelsohn, David R Stover, Fernando Doñate
Neutropenia is a common adverse event in cancer patients treated with antibody-drug conjugates (ADCs) and we aimed to elucidate the potential mechanism of this toxicity. To investigate if ADCs affect neutrophil production from bone marrow, an in vitro assay was developed in which hematopoietic stem cells (HSCs) were differentiated to neutrophils. Several antibodies against targets absent in HSCs and neutrophils were conjugated to MMAE via a cleavable valine-citrulline linker (vcMMAE-ADCs) or MMAF via a non-cleavable maleimidocaproyl linker (mcMMAF-ADCs), and their cytotoxicity was tested in the neutrophil differentiation assay...
May 18, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28522431/wnk1-and-p38-mapk-distribution-in-ionocytes-and-accessory-cells-of-euryhaline-teleost-fish-implies-ionoregulatory-function
#15
W S Marshall, R R F Cozzi, M Spieker
Ionocytes of euryhaline teleost fish secrete NaCl, under regulation by serine and threonine kinases, including with-no-lysine kinase (WNK1) and p38 mitogen-activated protein kinase (MAPK). Mummichogs (Fundulus heteroclitus L.) were acclimated to freshwater (FW), full strength seawater (SW) and hypersaline conditions (2SW). Immunocytochemistry of ionocytes in opercular epithelia of fish acclimated to SW and 2SW revealed that WNK1-anti-pT58 phosphoantibody localized strongly to accessory cells and was present in the cytosol of ionocytes close to, cystic fibrosis transmembrane conductance regulator (CFTR) in the apical membrane and sodium, potassium, 2 chloride cotransporter (NKCC) in basolateral membrane...
May 18, 2017: Biology Open
https://www.readbyqxmd.com/read/28522421/a-chymotrypsin-like-serine-protease-from-portunus-trituberculatus-involved-in-pathogen-recognition-and-amp-synthesis-but-not-required-for-prophenoloxidase-activation
#16
Hourong Liu, Yuan Liu, Chengwen Song, Zhaoxia Cui
Clip domain serine proteases (clip-SPs) play critical roles in various immune responses in arthropods, such as hemolymph coagulation, antimicrobial peptide (AMP) synthesis, cell adhesion and melanization. In the present study, we report the molecular and functional characterization of a clip domain serine protease (PtcSP2) from the swimming crab Portunus trituberculatus. The N-terminal clip domain and the C-terminal SP-like domain of PtcSP2 were expressed in Escherichia coli system, and assayed for their activities...
May 15, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28522347/functional-analysis-of-tcctlp-5c2-a-chymotrypsin-like-serine-protease-needed-for-molting-in-tribolium-castaneum
#17
Daniel Albaum, Gunnar Broehan, Subbaratnam Muthukrishnan, Hans Merzendorfer
In a previous study, we have characterized a gene family encoding chymotrypsin-like proteases from the red flour beetle, Tribolium castaneum (TcCTLPs). We identified 14 TcCTLP genes that were predominantly expressed in the midgut, where they presumably function in digestion. Two genes (TcCTLP-6C and TcCTLP-5C2), however, additionally showed considerable expression in the carcass, and RNAi studies demonstrated that they are required for molting (Broehan et al., 2010; Insect Biochem. Mol. Biol 40, 274-83). Thus, the enzyme has distinct functions in different physiological environments...
May 15, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28521765/inhibition-of-o-glcnacase-leads-to-elevation-of-o-glcnac-tau-and-reduction-of-tauopathy-and-cerebrospinal-fluid-tau-in-rtg4510-mice
#18
Nicholas B Hastings, Xiaohai Wang, Lixin Song, Brent D Butts, Diane Grotz, Richard Hargreaves, J Fred Hess, Kwok-Lam Karen Hong, Cathy Ruey-Ruey Huang, Lynn Hyde, Maureen Laverty, Julie Lee, Diane Levitan, Sherry X Lu, Maureen Maguire, Veeravan Mahadomrongkul, Ernest J McEachern, Xuesong Ouyang, Thomas W Rosahl, Harold Selnick, Michaela Stanton, Giuseppe Terracina, David J Vocadlo, Ganfeng Wang, Joseph L Duffy, Eric M Parker, Lili Zhang
BACKGROUND: Hyperphosphorylation of microtubule-associated protein tau is a distinct feature of neurofibrillary tangles (NFTs) that are the hallmark of neurodegenerative tauopathies. O-GlcNAcylation is a lesser known post-translational modification of tau that involves the addition of N-acetylglucosamine onto serine and threonine residues. Inhibition of O-GlcNAcase (OGA), the enzyme responsible for the removal of O-GlcNAc modification, has been shown to reduce tau pathology in several transgenic models...
May 18, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28521470/new-role-of-human-ribosomal-protein-s3-regulation-of-cell-cycle-via-phosphorylation-by-cyclin-dependent-kinase-2
#19
Se Hee Han, Ji Hyung Chung, Joon Kim, Key-Sun Kim, Ye Sun Han
Human ribosomal protein S3 (hRpS3) is a component of the 40S ribosomal subunit that associated in protein synthesis. hRpS3 has additional ribosomal functions such as DNA repair, transcription, metastasis, and apoptosis via interaction with numerous signaling molecules and has different modifications. Cyclin-dependent kinases (CDKs) are heterodimeric serine/threonine protein kinases that regulate cell cycle progression. Among its members, the Cdk1-cyclin B complex is known to control cell progression in the G2/M phase, while Cdk2-cyclin E/A complexes function in G1/S and S/G2 transition...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28521467/upregulation-of-maspin-expression-in-human-cervical-carcinoma-cells-by-transforming-growth-factor-%C3%AE-1-through-the-convergence-of-smad-and-non-smad-signaling-pathways
#20
Ariyaphong Wongnoppavich, Nahathai Dukaew, Sirinthip Choonate, Kongthawat Chairatvit
Mammary serine protease inhibitor (maspin), encoded by the serpin family B member 5 gene, serves as a tumor suppressor through the inhibition of cancer cell invasion and metastasis. Paradoxically, maspin levels are upregulated in a number of types of malignant cells. Therefore, the regulation of maspin expression may depend on the genetic or epigenetic background and the specific microenvironment of carcinoma cells. In the present study, it was demonstrated that transforming growth factor β1 (TGF-β1) induced maspin expression at the transcript and protein levels in the human cervical carcinoma HeLa and human oral squamous carcinoma HSC4 cell lines...
May 2017: Oncology Letters
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