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https://www.readbyqxmd.com/read/28823125/the-importance-of-post-thaw-subculture-for-standardizing-cellular-activity-of-fresh-or-cryopreserved-mouse-embryonic-stem-cells
#1
Dong Woo Ko, Jung Ki Yoon, Jong Il Ahn, Myungook Lee, Woo Sub Yang, Ji Yeon Ahn, Jeong Mook Lim
Objective: Much difference in cellular activity was detected between early and late subpassaged embryonic stem cell (ESCs) lines, which can be created by subtle changes in cell manipulation protocol. This study was subsequently examined whether post-thaw subculture of early subpassaged ESC lines could further affect their cellular activity, which results can contribute to standardizing ESC manipulation protocol for minimizing batch difference or data fluctuation. Methods: Fresh (as a control treatment) or cryopreserved F1 hybrid (B6CBAF1) early ESC lines (C57BL/6xCBA) of the 4 (P4) or the 19 passage (P19) were subcultured once, twice or six times under the same condition...
August 16, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28811972/uncovering-the-immunotherapeutic-cycle-initiated-by-p19arf-and-interferon-%C3%AE-gene-transfer-to-cancer-cells-an-inducer-of-immunogenic-cell-death
#2
REVIEW
Ruan F V Medrano, Aline Hunger, João P P Catani, Bryan E Strauss
Simultaneous reestablishment of p53/p19(Arf) and interferon-β pathways in melanoma cells culminates in a cell death process that displays features of necroptosis along with the release of immunogenic cell death molecules and unleashes an antitumor immune response mediated by natural killer cells, neutrophils as well as CD4(+) and CD8(+) T lymphocytes.
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28810055/impact-of-mir-26b-on-cardiomyocyte-differentiation-in-p19-cells-through-regulating-canonical-non-canonical-wnt-signalling
#3
Duo Wang, Chang Liu, Yumei Wang, Wenjing Wang, Kang Wang, Xiujuan Wu, Zhigang Li, Cuimei Zhao, Li Li, Luying Peng
BACKGROUND AND OBJECTIVES: The control of cardiomyocyte differentiation is tightly linked to microRNAs (miRNAs), which have been emerging as important players in heart development. However, the regulation mechanisms mediated by miRNAs in early heart development remains speculative. Here, we evaluated the impact of miR-26b during the progression of cardiomyocyte differentiation from the P19 cell line. MATERIALS AND METHODS: The overexpression of miR-26b in P19 cells was performed by transduction with lentivirus vector...
August 15, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28783759/senescence-as-a-novel-mechanism-involved-in-%C3%AE-adrenergic-receptor-mediated-cardiac-hypertrophy
#4
Rongrong Sun, Baoling Zhu, Kai Xiong, Yan Sun, Dandan Shi, Li Chen, Youyi Zhang, Zijian Li, Lixiang Xue
Pathological cardiac hypertrophy used to be elucidated by biomechanical, stretch-sensitive or neurohumoral mechanisms. However, a series of hints have indicated that hypertrophy process simulates senescence program. However, further evidence need to be pursued. To verify this hypothesis and examine whether cardiac senescence is a novel mechanism of hypertrophy induced by isoproterenol, 2-month-old male Sprague Dawley rats were subjected to isoproterenol infusion (0.25mg/kg/day) for 7 days by subcutaneous injection)...
2017: PloS One
https://www.readbyqxmd.com/read/28782859/effect-of-supplementation-of-recombinant-regucalcin-in-extender-on-cryopreservation-of-spermatozoa-of-water-buffalo-bubalus-bubalis
#5
Harikrishna Pillai, Mehtab S Parmar, A M Shende, Jobin Thomas, Harikumar S, G Taru Sharma, S K Ghosh, A Kumaresan, S K Bhure
Elevated intracellular calcium concentration and oxidative damage are two major factors contributing to the poor fertility of cryopreserved spermatozoa. Regucalcin (RGN), also known as Senescence marker protein-30 (SMP-30), is a calcium-binding protein with multiple roles that include calcium homeostasis, anti-oxidative, anti-apoptosis, and anti-proliferation. In Drosophila, regucalcin is reportedly a putative cold-tolerance gene, and a cryoprotective role for regucalcin against intracellular calcium elevation and oxidative stress was reported in P19 cell lines...
August 7, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28776528/humoral-immune-responses-in-mice-immunized-with-region-of-difference-dna-vaccine-constructs-of-pumvc6-and-pumvc7
#6
Shumaila N M Hanif, A S Mustafa
BACKGROUND: We aimed to study the antigen-specific antibody responses in mice immunized with recombinant DNA vaccines constructs of pUMVC6 and pUMVC7, containing RD1 and RD9 genes of Mycobacterium tuberculosis. METHODS: We immunized mice with the parent and recombinant plasmids and sera were collected and tested for antibodies against pure recombinant proteins of RD1 (PE35, PPE68, EsxA, EsxB) and RD9 (EsxV), peptide mixtures of each protein and their individual peptides using enzyme-linked immunosorbent assays...
July 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28770513/selective-interleukin-23-p19-inhibition-another-game-changer-in-psoriasis-focus-on-risankizumab
#7
Tiago Torres
The history of psoriasis treatment has been marked by several milestones. Corticosteroids, cyclosporine, tumor necrosis factor alpha (TNF-α) inhibitors and, more recently, interleukin (IL)-17A inhibitors have revolutionized the treatment of psoriasis, each in its own way and time. The IL-23/IL-17 axis is currently considered to be crucial in the pathogenesis of psoriasis and selective IL-23p19 inhibition may bring several advantages with respect to IL-12/23p40 inhibition, or distal blockade of IL-17A or its receptor...
August 2, 2017: Drugs
https://www.readbyqxmd.com/read/28761605/henoch-schonlein-purpura-associated-with-primary-active-epstein-barr-virus-infection-a-case-report
#8
Burcu Karakayali, Sila Yilmaz, Deniz Çakir, Pembe Gül Günes, Sirin Güven, Ismail Islek
Henoch-Schönlein purpura (HSP) is the most common form of childhood vasculitis. Various viral and bacterial infections, drugs, vaccines, food allergy and even insect bites have been considered as triggering factors in pathogenesis of HSP. Epstein-Barr virus (EBV) infection, which is associated with HSP, have been rarely reported. Herein we present HSP patient possibly caused by EBV infection. A 8-year old boy was admitted to our department with fever, rashes on legs and arms and intermittent mild abdominal pain...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28758598/synthetic-peptides-derived-from-ribosomal-proteins-of-leishmania-spp-in-mucocutaneous-leishmaniasis-diagnostic-usefulness
#9
Magda Melissa Florez, Camila Indiani de Oliveira, Concepción Puerta, Fanny Guzmán, Martha Ayala, Gladis Montoya, Gabriela Delgado
The serological diagnostic methods currently available for mucocutaneous leishmaniasis (MCL) lack specificity when complete parasites are used; however, such specificity increases when protein fractions are used. Ribosomal proteins have been reported to induce antibodies in animal and humans infected with the parasite, making them a worth candidate to assess its diagnosis potential. This study was thus aimed at evaluating synthetic peptides derived from Leishmania braziliensis ribosomal proteins S25 and S5 as antigen candidates for diagnosing MCL by ELISA; 4 of these 21 peptides (P4, P6, P19 and P21) had the greatest sensitivity (21...
July 28, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28748780/mir-133a-3p-targets-sumo-specific-protease-1-to-inhibit-cell-proliferation-and-cell-cycle-progress-in-colorectal-cancer
#10
Guo-Qiang Zhou, Fu Han, Zhi-Liang Shi, Liang Yu, Xue-Feng Li, Cheng Yu, Cheng-Long Shen, Dai-Wei Wan, Xin-Quo Zhu, Rui Li, Song-Bing He
Dysregulation of SUMO-specific protease 1(SENP1) expression has been reported in several kinds of cancer, including human colorectal and prostate cancers, proposing SENP1 as a oncogene with a critical role in cancer progression. MiR-133a-3p has been reported as a tumor suppressor in several malignant neoplasias. However, the precise molecular mechanisms underlying its role in colorectal cancer remain largely unknown. The aim of this work is to investigate the relationship between miR-133a-3p and SENP1 in colorectal cancer cells...
July 26, 2017: Oncology Research
https://www.readbyqxmd.com/read/28724653/haplodeficiency-of-ataxia-telangiectasia-mutated-accelerates-heart-failure-after-myocardial-infarction
#11
Lixin Jia, Wenmei Zhang, Youcai Ma, Boya Chen, Yan Liu, Chunmei Piao, Yuan Wang, Min Yang, Tingting Liu, Junmeng Zhang, Taotao Li, Shaoping Nie, Jie Du
BACKGROUND: Cell senescence is involved in the process of organ damage and repair; however, the underlying molecular mechanism needs to be further explored. METHODS AND RESULTS: Senescence-related genes (ie, p21, p53, and ataxia telangiectasia mutated [ATM]) were shown to be elevated after myocardial infarction (MI) in both mouse and human hearts. Ten- to 12-week-old male wild-type littermates (ATM(+/+)) and ATM heterozygous mice (ATM(+/-)) were subjected to MI...
July 19, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28712951/ra-induced-transcriptional-silencing-of-checkpoint-kinase-2-through-promoter-methylation-by-dnmt3b-is-required-for-neuronal-differentiation-of-p19-cells
#12
Muhammad Abid Sheikh, Yousra Saeed Malik, Xiaojuan Zhu
In a previous study, we identified several novel targets of Dnmt3b using a chromatin library from retinoic acid (RA)-treated P19 cells. The present study describes the regulation of expression and function of checkpoint kinase (Chk2), which was one of the target genes of Dnmt3b. Chromatin immunoprecipitation followed by quantitative PCR analysis showed that recruitment of Dnmt3b on Chk2 promoter is induced following RA treatment of P19 cells. Both bisulfite genomic sequence and COBRA analyses showed that the methylation level of Chk2 promoter is progressively increased during RA-induced neuronal differentiation of P19 cells...
August 4, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28709871/protein-rna-complexation-driven-by-the-charge-regulation-mechanism
#13
Fernando Luís Barroso da Silva, Philippe Derreumaux, Samuela Pasquali
Electrostatic interactions play a pivotal role in many (bio)molecular association processes. The molecular organization and function in biological systems are largely determined by these interactions from pure Coulombic contributions to more peculiar mesoscopic forces due to ion-ion correlation and proton fluctuations. The latter is a general electrostatic mechanism that gives attraction particularly at low electrolyte concentrations. This charge regulation mechanism due to titrating amino acid and nucleotides residues is discussed here in a purely electrostatic framework...
July 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28707817/evaluation-of-free-or-anchored-antimicrobial-peptides-as-candidates-for-the-prevention-of-orthopaedic-device-related-infections
#14
Francesca D'Este, Debora Oro, Gerard Boix-Lemonche, Alessandro Tossi, Barbara Skerlavaj
The prevention of implant-associated infection, one the most feared complications in orthopaedic surgery, remains a major clinical challenge and urges development of effective methods to prevent bacterial colonization of implanted devices. Alpha-helical antimicrobial peptides (AMPs) may be promising candidates in this respect due to their potent and broad-spectrum antimicrobial activity, their low tendency to elicit resistance and possible retention of efficacy in the immobilized state. The aim of this study was to evaluate the potential of five different helical AMPs, the cathelicidins BMAP-27 and BMAP-28, their (1-18) fragments and the rationally designed, artificial P19(9/G7) peptide, for the prevention of orthopaedic implant infections...
July 14, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28653490/the-role-of-il-23-and-the-il-23-th-17-immune-axis-in-the-pathogenesis-and-treatment-of-psoriasis
#15
REVIEW
G Girolomoni, R Strohal, L Puig, H Bachelez, J Barker, W H Boehncke, J C Prinz
Psoriasis is a chronic, immune-mediated disease affecting more than 100 million people worldwide and up to 2.2% of the UK population. The etiology of psoriasis is thought to originate from an interplay of genetic, environmental, infectious, and lifestyle factors. The manner in which genetic and environmental factors interact to contribute to the molecular disease mechanisms has remained elusive. However, the interleukin 23 (IL-23)/T-helper 17 (TH 17) immune axis has been identified as a major immune pathway in psoriasis disease pathogenesis...
June 27, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28652370/small-mitochondrial-arf-smarf-protein-corrects-p53-independent-developmental-defects-of-arf-tumor-suppressor-deficient-mice
#16
Jolieke G van Oosterwijk, Chunliang Li, Xue Yang, Joseph T Opferman, Charles J Sherr
The mouse p19(Arf) (human p14(ARF)) tumor suppressor protein, encoded in part from an alternative reading frame of the Ink4a (Cdkn2a) gene, inhibits the Mdm2 E3 ubiquitin ligase to activate p53. Arf is not expressed in most normal tissues of young mice but is induced by high thresholds of aberrant hyperproliferative signals, thereby activating p53 in incipient tumor cells that have experienced oncogene activation. The single Arf mRNA encodes two distinct polypeptides, including full-length p19(Arf) and N-terminally truncated and unstable p15(smArf) ("small mitochondrial Arf") initiated from an internal in-frame AUG codon specifying methionine-45...
July 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28641400/cytosolic-delivery-of-sirna-by-ultra-high-affinity-dsrna-binding-proteins
#17
Nicole J Yang, Monique J Kauke, Fangdi Sun, Lucy F Yang, Katie F Maass, Michael W Traxlmayr, Yao Yu, Yingda Xu, Robert S Langer, Daniel G Anderson, K Dane Wittrup
Protein-based methods of siRNA delivery are capable of uniquely specific targeting, but are limited by technical challenges such as low potency or poor biophysical properties. Here, we engineered a series of ultra-high affinity siRNA binders based on the viral protein p19 and developed them into siRNA carriers targeted to the epidermal growth factor receptor (EGFR). Combined in trans with a previously described endosome-disrupting agent composed of the pore-forming protein Perfringolysin O (PFO), potent silencing was achieved in vitro with no detectable cytotoxicity...
June 21, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28640945/production-of-human-vitronectin-in-nicotiana-benthamiana-using-the-inpact-hyper-expression-platform
#18
Benjamin Dugdale, Maiko Kato, Pradeep Deo, Manuel Plan, Mark Harrison, Robyn Lloyd, Terry Walsh, Robert Harding, James Dale
Human vitronectin (hVN) is a glycoprotein that functions as a cell adhesion molecule and a regulator of coagulation in blood plasma and the extracellular matrix. In vitro, hVN is added to serum-free media in order to promote the adhesion of animal cells to tissue culture surfaces and the proliferation of undifferentiated stem cells. Here, we report the production of hVN in Nicotiana benthamiana using the inducible In Plant Activation (INPACT) hyper-expression platform. N. benthamiana plants were transformed with an INPACT expression cassette encoding hVN, and both the Tobacco yellow dwarf virus Rep/RepA activator and Tomato bushy stunt virus p19 gene under the transcriptional control of the ethanol-inducible AlcR:alcA gene switch...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28637452/downregulation-of-talin-1-expression-associates-with-increased-proliferation-and-migration-of-vascular-smooth-muscle-cells-in-aortic-dissection
#19
Xiaolong Wei, Yudong Sun, Yani Wu, Jiang Zhu, Bin Gao, Han Yan, Zhiqing Zhao, Jian Zhou, Zaiping Jing
BACKGROUND: This study aimed to assessed whether Talin-1 is involved in the pathogenesis of aortic dissection via regulating vascular smooth muscle cell (VSMC) biological function. METHODS: Human aortic samples were obtained from organ donors who died from nonvascular diseases as normal controls and from patients undergoing surgical repair of thoracic aortic dissection. The expression level and distribution of Talin-1 were detected using westernblot analysis and immunohistochemistry in each sample...
June 20, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28636437/tobacco-rattle-virus-trv-mediated-silencing-of-nicotiana-benthamiana-argonautes-nbagos-reveals-new-antiviral-candidates-and-dominant-effects-of-trv-nbago1
#20
Denis Odokonyero, Maria R Mendoza, Peter Moffett, Herman B Scholthof
The objective of this study was to determine the contribution of different ARGONAUTE proteins in Nicotiana benthamiana (NbAGOs) to the defense against silencing sensitive GFP-expressing viral constructs based on Tomato bushy stunt virus (TBSV) (Tombusvirus), Sunn-hemp mosaic virus (Tobamovirus), and Foxtail mosaic virus (Potexvirus). Upon Tobacco rattle virus (TRV)-mediated down-regulation of NbAGO1, 4, 5, or 6, no effects were noted on susceptibility to any virus construct, whereas knockdown of NbAGO2 specifically prevented silencing of P19-defective TBSV (TGdP19)...
August 2017: Phytopathology
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