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https://www.readbyqxmd.com/read/29786076/c-myc-inhibits-myoblast-differentiation-and-promotes-myoblast-proliferation-and-muscle-fibre-hypertrophy-by-regulating-the-expression-of-its-target-genes-mirnas-and-lincrnas
#1
Wen Luo, Jiahui Chen, Limin Li, Xueyi Ren, Tian Cheng, Shiyi Lu, Raman Akinyanju Lawal, Qinghua Nie, Xiquan Zhang, Olivier Hanotte
The transcription factor c-Myc is an important regulator of cellular proliferation, differentiation and embryogenesis. While c-Myc can inhibit myoblast differentiation, the underlying mechanisms remain poorly understood. Here, we found that c-Myc does not only inhibits myoblast differentiation but also promotes myoblast proliferation and muscle fibre hypertrophy. By performing chromatin immunoprecipitation and high-throughput sequencing (ChIP-seq), we identified the genome-wide binding profile of c-Myc in skeletal muscle cells...
May 21, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29784648/mouse-models-of-nesprin-related-diseases
#2
REVIEW
Can Zhou, Li Rao, Derek T Warren, Catherine M Shanahan, Qiuping Zhang
Nesprins (nuclear envelope spectrin repeat proteins) are a family of multi-isomeric scaffolding proteins. Nesprins form the LInker of Nucleoskeleton-and-Cytoskeleton (LINC) complex with SUN (Sad1p/UNC84) domain-containing proteins at the nuclear envelope, in association with lamin A/C and emerin, linking the nucleoskeleton to the cytoskeleton. The LINC complex serves as both a physical linker between the nuclear lamina and the cytoskeleton and a mechanosensor. The LINC complex has a broad range of functions and is involved in maintaining nuclear architecture, nuclear positioning and migration, and also modulating gene expression...
May 21, 2018: Biochemical Society Transactions
https://www.readbyqxmd.com/read/29782805/maintaining-supersaturation-of-nimodipine-by-pvp-with-or-without-the-presence-of-sodium-lauryl-sulfate-and-sodium-taurocholate
#3
Yipshu Pui, Yuejie Chen, Huijun Chen, Shan Wang, Chengyu Liu, Wouter Tonnis, Linc Chen, Peter Serno, Stefan Bracht, Feng Qian
Amorphous solid dispersion (ASD) is one of the most versatile supersaturating drug delivery system to improve the dissolution rate and oral bioavailability of poorly water soluble drugs. PVP based ASD formulation of nimodipine (NMD) has been marketed and effectively used in clinic for nearly 30 years, yet the mechanism by which PVP maintains the supersaturation and subsequently improves the bioavailability of NMD was rarely investigated. In this research, we first studied the molecular interactions between NMD and PVP by solution NMR using CDCl3 as the solvent, and drug-polymer Flory-Huggins interaction parameter...
May 21, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29770052/surveillance-of-laboratory-exposures-to-human-pathogens-and-toxins-canada-2016
#4
A Bienek, M Heisz, M Su
Background: Canada recently enacted legislation to authorize the collection of data on laboratory incidents involving a biological agent. This is done by the Public Health Agency of Canada (PHAC) as part of a comprehensive national program that protects Canadians from the health and safety risks posed by human and terrestrial animal pathogens and toxins. Objective: To describe the first year of data on laboratory exposure incidents and/or laboratory-acquired infections in Canada since the Human Pathogens and Toxins Regulations came into effect...
November 2, 2017: Canada Communicable Disease Report, Relevé des Maladies Transmissibles Au Canada
https://www.readbyqxmd.com/read/29762822/linc-ror-promotes-endometrial-cell-proliferation-by-activating-the-pi3k-akt-pathway
#5
X-Y Xu, J Zhang, Y-H Qi, M Kong, S-A Liu, J-J Hu
OBJECTIVE: To observe the expressions of Linc-ROR and proteins in the PI3K-Akt pathway in an ectopic lesion of adenomyosis. PATIENTS AND METHODS: The expression of Linc-ROR in the ectopic endometrium, eutopic endometrium, and normal endometrium of adenomyosis was detected by qRT-PCR. Western blot was used to detect the protein expressions of PI3K-Akt in endometriosis and lesion endometriosis. Cell counting kit-8 (CCK-8) assay was utilized to detect cell proliferative activity...
April 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29755127/a-novel-long-non-coding-rna-linc-znf469-3-promotes-lung-metastasis-through-mir-574-5p-zeb1-axis-in-triple-negative-breast-cancer
#6
Po-Shun Wang, Cheng-Han Chou, Cheng-Han Lin, Yun-Chin Yao, Hui-Chuan Cheng, Hao-Yi Li, Yu-Chung Chuang, Chia-Ning Yang, Luo-Ping Ger, Yu-Chia Chen, Forn-Chia Lin, Tang-Long Shen, Michael Hsiao, Pei-Jung Lu
Triple-negative breast cancer (TNBC) patients usually lead to poor prognosis and survival because of metastasis. The major sites for TNBC metastasis include the lungs, brain, liver, and bone. Long non-coding RNAs (lncRNAs) are non-protein-coding transcripts longer than 200 nucleotides and have been reported as important regulators in BC metastasis. However, the underlying mechanisms for lncRNAs regulating TNBC metastasis are not fully understood. Here we found that linc-ZNF469-3 was highly expressed in lung-metastatic LM2-4175 TNBC cells and overexpression of linc-ZNF469-3 enhanced invasion ability and stemness properties in vitro and lung metastasis in vivo...
May 14, 2018: Oncogene
https://www.readbyqxmd.com/read/29745839/multi-target-drug-repositioning-by-bipartite-block-wise-sparse-multi-task-learning
#7
Limin Li, Xiao He, Karsten Borgwardt
BACKGROUND: Finding potential drug targets is a crucial step in drug discovery and development. Recently, resources such as the Library of Integrated Network-Based Cellular Signatures (LINCS) L1000 database provide gene expression profiles induced by various chemical and genetic perturbations and thereby make it possible to analyze the relationship between compounds and gene targets at a genome-wide scale. Current approaches for comparing the expression profiles are based on pairwise connectivity mapping analysis...
April 24, 2018: BMC Systems Biology
https://www.readbyqxmd.com/read/29742191/gene-expression-analysis-differentiates-melanomas-from-spitz-nevi
#8
Burkhard Jansen, Doyle Hansen, Ronald Moy, Maesa Hanhan, Zuxu Yao
INTRODUCTION: Pediatric Spitz nevi can pose significant diagnostic challenges to both clinicians and dermatopathologists when the current image-recognition based gold standard is employed. PRAME (preferentially expressed antigen in melanoma) and/or LINC (long intergeneic non-coding RNA 518) gene expression in adult patients in samples obtained non-invasively via adhesive patches differentiates primary melanomas from atypical nevi and other pigmented lesions with a NPV of over 99%, a sensitivity of 91%, and a specificity of 69%, to help clinicians rule out melanoma and the need for surgical biopsies of atypial pigmented lesions with suspicion for melanoma...
May 1, 2018: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29720241/cross-talk-between-microtubules-and-the-linker-of-nucleoskeleton-complex-plays-a-critical-role-in-the-adipogenesis-of-human-adipose-derived-stem-cells
#9
Yiting Yang, Rongmei Qu, Tingyu Fan, Xi Zhu, Yanting Feng, Yuchao Yang, Ting Deng, Yan Peng, Wenhua Huang, Jun Ouyang, Jingxing Dai
BACKGROUND: Adipose-derived stem cells (ASCs) that show multidifferentiation and anti-immune rejection capacities have been widely used in plastic and reconstructive surgery. Previous studies have indicated that mechanical and biophysical interactions between cells and their surrounding environment regulate essential processes, such as growth, survival, and differentiation, and the cytoskeleton system plays an important role in the mechanotransduction. However, the role of mechanical force in the determination of lineage fate is still unclear...
May 2, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29708969/microdeletion-on-chromosome-8p23-1-in-a-familial-form-of-severe-buruli-ulcer
#10
Quentin B Vincent, Aziz Belkadi, Cindy Fayard, Estelle Marion, Ambroise Adeye, Marie-Françoise Ardant, Christian R Johnson, Didier Agossadou, Lazaro Lorenzo, Julien Guergnon, Christine Bole-Feysot, Jeremy Manry, Patrick Nitschké, Ioannis Theodorou, Jean-Laurent Casanova, Laurent Marsollier, Annick Chauty, Laurent Abel, Alexandre Alcaïs
Buruli ulcer (BU), the third most frequent mycobacteriosis worldwide, is a neglected tropical disease caused by Mycobacterium ulcerans. We report the clinical description and extensive genetic analysis of a consanguineous family from Benin comprising two cases of unusually severe non-ulcerative BU. The index case was the most severe of over 2,000 BU cases treated at the Centre de Dépistage et de Traitement de la Lèpre et de l'Ulcère de Buruli, Pobe, Benin, since its opening in 2003. The infection spread to all limbs with PCR-confirmed skin, bone and joint infections...
April 30, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29691054/sun-mediated-mechanical-linc-between-nucleus-and-cytoskeleton-regulates-%C3%AE-catenin-nuclear-access
#11
Gunes Uzer, Guniz Bas, Buer Sen, Zhihui Xie, Scott Birks, Melis Olcum, Cody McGrath, Maya Styner, Janet Rubin
βcatenin acts as a primary intracellular signal transducer for mechanical and Wnt signaling pathways to control cell function and fate. Regulation of βcatenin in the cytoplasm has been well studied but βcatenin nuclear trafficking and function remains unclear. In a previous study we showed that, in mesenchymal stem cells (MSC), mechanical blockade of adipogenesis relied on inhibition of βcatenin destruction complex element GSK3β (glycogen synthase kinase 3β) to increase nuclear βcatenin as well as the function of Linker of Cytoskeleton and Nucleoskeleton (LINC) complexes, suggesting that these two mechanisms may be linked...
April 12, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29690669/-lincrna-ror-functions-as-a-cerna-to-regulate-oct4-sox2-and-nanog-expression-by-sponging-mir-145-and-its-effect-on-biologic-characteristics-of-colonic-cancer-stem-cells
#12
Z Y Yan, X C Sun
Objective: To investigate the impact of lincRNA-ROR, a ceRNA by binding miR-145 on the expression of the downstream genes Oct4, Sox2 and Nanog, and related biological characteristics of colon cancer stem cells, and to elucidate the clinical significance of this molecular regulatory network. Methods: Fifty-two cases of colorectal cancer tissue and adjacent tissue were collected at Nanyang City Central Hospital and Nanyang Second Hospital, Henan Province, from 2014 to 2016. Real-time quantitative polymerase chain reaction (qPCR) was used to detect the expression of lincRNA-ROR and miR-145 in colorectal cancer tissue and isolated colon cancer cells...
April 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29690642/autophagic-removal-of-farnesylated-carboxy-terminal-lamin-peptides
#13
Xiang Lu, Karima Djabali
The mammalian nuclear lamina proteins—prelamin A- and B-type lamins—are post-translationally modified by farnesylation, endoproteolysis, and carboxymethylation at a carboxy-terminal CAAX (C, cysteine; a, aliphatic amino acid; X, any amino acid) motif. However, prelamin A processing into mature lamin A is a unique process because it results in the production of farnesylated and carboxymethylated peptides. In cells from patients with Hutchinson⁻Gilford progeria syndrome, the mutant prelamin A protein, progerin, cannot release its prenylated carboxyl-terminal moiety and therefore remains permanently associated with the nuclear envelope (NE), causing severe nuclear alterations and a dysmorphic morphology...
April 23, 2018: Cells
https://www.readbyqxmd.com/read/29689197/ari-1-regulates-myonuclear-organization-together-with-parkin-and-is-associated-with-aortic-aneurysms
#14
Kai Li Tan, Nele A Haelterman, Callie S Kwartler, Ellen S Regalado, Pei-Tseng Lee, Sonal Nagarkar-Jaiswal, Dong-Chuan Guo, Lita Duraine, Michael F Wangler, Michael J Bamshad, Deborah A Nickerson, Guang Lin, Dianna M Milewicz, Hugo J Bellen
Nuclei are actively positioned and anchored to the cytoskeleton via the LINC (Linker of Nucleoskeleton and Cytoskeleton) complex. We identified mutations in the Parkin-like E3 ubiquitin ligase Ariadne-1 (Ari-1) that affect the localization and distribution of LINC complex members in Drosophila. ari-1 mutants exhibit nuclear clustering and morphology defects in larval muscles. We show that Ari-1 mono-ubiquitinates the core LINC complex member Koi. Surprisingly, we discovered functional redundancy between Parkin and Ari-1: increasing Parkin expression rescues ari-1 mutant phenotypes and vice versa...
April 23, 2018: Developmental Cell
https://www.readbyqxmd.com/read/29689191/myonuclear-positioning-and-aneurysms-are-linc-d-by-ariande
#15
Mridula Balakrishnan, Mary K Baylies
In this issue of Developmental Cell, Tan et al. (2018) show how a novel player in myonuclear positioning, the ubiquitin ligase Ari-1, regulates levels of Koi, a member of the LINC mechanosensing complex, and affects nuclear morphology and positioning in both Drosophila muscles and human vascular smooth muscle cells.
April 23, 2018: Developmental Cell
https://www.readbyqxmd.com/read/29663073/ultra-structure-of-the-sperm-head-to-tail-linkage-complex-in-the-absence-of-the-spermatid-specific-linc-component-spag4
#16
Kefei Yang, Ibrahim M Adham, Andreas Meinhardt, Sigrid Hoyer-Fender
Tight connection between sperm head and tail is crucial for the transport of the male genome and fertilization. The linkage complex, the sperm head-to-tail coupling apparatus (HTCA), originates from the centrosome and anchors to the nuclear membrane. In contrast to its ultra-structural organization, which is already well known for decades, its protein composition largely still awaits future deciphering. SUN-domain proteins are essential components of a complex that links the cytoskeleton to the peripheral nucleoskeleton, which is the nuclear lamina...
April 16, 2018: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/29660499/modulating-membrane-fluidity-corrects-batten-disease-phenotypes-in-vitro-and-in-vivo
#17
Mark L Schultz, Luis Tecedor, Elena Lysenko, Shyam Ramachandran, Colleen S Stein, Beverly L Davidson
The neuronal ceroid lipofuscinoses are a class of inherited neurodegenerative diseases characterized by the accumulation of autofluorescent storage material. The most common neuronal ceroid lipofuscinosis has juvenile onset with rapid onset blindness and progressive degeneration of cognitive processes. The juvenile form is caused by mutations in the CLN3 gene, which encodes the protein CLN3. While mouse models of Cln3 deficiency show mild disease phenotypes, it is apparent from patient tissue- and cell-based studies that its loss impacts many cellular processes...
April 13, 2018: Neurobiology of Disease
https://www.readbyqxmd.com/read/29650775/mechanotransduction-via-the-linc-complex-regulates-dna-replication-in-myonuclei
#18
Shuoshuo Wang, Elizabeth Stoops, Unnikannan Cp, Barak Markus, Adriana Reuveny, Elly Ordan, Talila Volk
Nuclear mechanotransduction has been implicated in the control of chromatin organization; however, its impact on functional contractile myofibers is unclear. We found that deleting components of the linker of nucleoskeleton and cytoskeleton (LINC) complex in Drosophila melanogaster larval muscles abolishes the controlled and synchronized DNA endoreplication, typical of nuclei across myofibers, resulting in increased and variable DNA content in myonuclei of individual myofibers. Moreover, perturbation of LINC-independent mechanical input after knockdown of β-Integrin in larval muscles similarly led to increased DNA content in myonuclei...
April 12, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29615902/drug-repositioning-in-glioblastoma-a-pathway-perspective
#19
REVIEW
Sze Kiat Tan, Anna Jermakowicz, Adnan K Mookhtiar, Charles B Nemeroff, Stephan C Schürer, Nagi G Ayad
Glioblastoma multiforme (GBM) is the most malignant primary adult brain tumor. The current standard of care is surgical resection, radiation, and chemotherapy treatment, which extends life in most cases. Unfortunately, tumor recurrence is nearly universal and patients with recurrent glioblastoma typically survive <1 year. Therefore, new therapies and therapeutic combinations need to be developed that can be quickly approved for use in patients. However, in order to gain approval, therapies need to be safe as well as effective...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29588458/personalised-drug-repositioning-for-clear-cell-renal-cell-carcinoma-using-gene-expression
#20
Karel K M Koudijs, Anton G T Terwisscha van Scheltinga, Stefan Böhringer, Kirsten J M Schimmel, Henk-Jan Guchelaar
Reversal of cancer gene expression is predictive of therapeutic potential and can be used to find new indications for existing drugs (drug repositioning). Gene expression reversal potential is currently calculated, in almost all studies, by pre-aggregating all tumour samples into a single group signature or a limited number of molecular subtype signatures. Here, we investigate whether drug repositioning based on individual tumour sample gene expression signatures outperforms the use of tumour group and subtype signatures...
March 27, 2018: Scientific Reports
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