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https://www.readbyqxmd.com/read/27909235/a-simple-and-sensitive-high-content-assay-for-the-characterization-of-antiproliferative-therapeutic-antibodies
#1
Andreas Stengl, David Hörl, Heinrich Leonhardt, Jonas Helma
Monoclonal antibodies (mAbs) have become a central class of therapeutic agents in particular as antiproliferative compounds. Their often complex modes of action require sensitive assays during early, functional characterization. Current cell-based proliferation assays often detect metabolites that are indicative of metabolic activity but do not directly account for cell proliferation. Measuring DNA replication by incorporation of base analogues such as 5-bromo-2'-deoxyuridine (BrdU) fills this analytical gap but was previously restricted to bulk effect characterization in enzyme-linked immunosorbent assay formats...
December 1, 2016: Journal of Biomolecular Screening
https://www.readbyqxmd.com/read/27907267/mitogenic-action-of-hypoxia-upon-cutaneous-neuroepithelial-cells-in-developing-zebrafish
#2
Benjamin W Dean, Thalia J Rashid, Michael G Jonz
In zebrafish, cutaneous neuroepithelial cells (NECs) contain serotonin (5-HT) and are believed to initiate physiological and behavioral responses to hypoxia during embryonic and early larval development, when mature gills and O2 chemoreceptors are not yet present. The number of skin NECs rapidly declines as embryos develop into larvae, but acclimation to hypoxia leads to retention of a greater number of these cells. We hypothesized that reduction of the partial pressure of oxygen (PO2 ) in water would stimulate mitosis in cutaneous NECs in zebrafish...
December 1, 2016: Developmental Neurobiology
https://www.readbyqxmd.com/read/27906439/in-vitro-neural-differentiation-of-bone-marrow-stromal-cells-induced-by-hepatocyte-growth-factor-and-glial-cell-derived-neurotrophic-factor
#3
Q Ma, M Cai, J-W Shang, J Yang, X-Y Gu, W-B Liu, Q Yang
OBJECTIVE: Bone marrow stromal cells (BMSCs) have great potential for cell-based transplantation therapy in treating neurological disease. However, the best combination of various trophic factors to produce full neural differentiation of BMSCs was still unclear. In our study, we aimed to investigate the neural differentiation capacity of rat BMSCs induced by growth factors including hepatocyte growth factor (HGF) and glial cell-derived neurotrophic factor (GDNF). MATERIALS AND METHODS:   Cell counting kit-8 (CCK-8) assay, BrdU cell proliferation assay and flow cytometry were implemented to evaluate whether GDNF and HGF had positive effects on the proliferation of BMSCs...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27900211/in-vivo-expression-of-reprogramming-factors-increases-hippocampal-neurogenesis-and-synaptic-plasticity-in-chronic-hypoxic-ischemic-brain-injury
#4
Soohyun Wi, Ji Hea Yu, MinGi Kim, Sung-Rae Cho
Neurogenesis and synaptic plasticity can be stimulated in vivo in the brain. In this study, we hypothesized that in vivo expression of reprogramming factors such as Klf4, Sox2, Oct4, and c-Myc would facilitate endogenous neurogenesis and functional recovery. CD-1® mice were induced at 1 week of age by unilaterally carotid artery ligation and exposure to hypoxia. At 6 weeks of age, mice were injected GFP only or both four reprogramming factors and GFP into lateral ventricle. Passive avoidance task and open field test were performed to evaluate neurobehavioral function...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27899748/cannabinoid-type-2-receptor-drives-neurogenesis-and-improves-functional-outcome-after-stroke
#5
Isabel Bravo-Ferrer, María I Cuartero, Juan G Zarruk, Jesús M Pradillo, Olivia Hurtado, Víctor G Romera, Javier Díaz-Alonso, Juan M García-Segura, Manuel Guzmán, Ignacio Lizasoain, Ismael Galve-Roperh, María A Moro
BACKGROUND AND PURPOSE: Stroke is a leading cause of adult disability characterized by physical, cognitive, and emotional disturbances. Unfortunately, pharmacological options are scarce. The cannabinoid type-2 receptor (CB2R) is neuroprotective in acute experimental stroke by anti-inflammatory mechanisms. However, its role in chronic stroke is still unknown. METHODS: Stroke was induced by permanent middle cerebral artery occlusion in mice; CB2R modulation was assessed by administering the CB2R agonist JWH133 ((6aR,10aR)-3-(1,1-dimethylbutyl)-6a,7,10,10a-tetrahydro-6,6,9-trimethyl-6H-dibenzo[b,d]pyran) or the CB2R antagonist SR144528 (N-[(1S)-endo-1,3,3-trimethylbicyclo-[2...
November 29, 2016: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/27899275/immunological-consequences-of-immunization-with-tumor-lysate-vaccine-and-propranolol-as-an-adjuvant-a-study-on-cytokine-profiles-in-breast-tumor-microenvironment
#6
Somayeh Ashrafi, Reza Shapouri, Mehdi Mahdavi
In this study, we sought out to study the anti-cancer effects of propranolol (Pro) in combination with tumor lysate vaccine on lymphocyte proliferation activities as well as on IL-2, IL-4, IL-10, IL-12, IL-17 and IFN-γ cytokine concentration in the tumor microenvironment (TME). A tumor model was established in inbred Balb/C mice using transplantation of tumor to the flank of native mice. Tumor-bearing mice were immunized with lysate tumor cells (vaccine), a combination of Pro/Vaccine (Vac). Control groups consisted of tumor-bearing mice receiving only propranolol or PBS three times with one week interval via subcutaneous (s...
November 26, 2016: Immunology Letters
https://www.readbyqxmd.com/read/27898359/motherhood-and-infant-contact-regulate-neuroplasticity-in-the-serotonergic-midbrain-dorsal-raphe
#7
M Allie Holschbach, Joseph S Lonstein
The adult brain shows remarkable neuroplasticity in response to hormones and the socioemotional modifications that they influence. In females with reproductive and maternal experience, this neuroplasticity includes the birth and death of cells in several forebrain regions involved in maternal caregiving and postpartum affective state. Such plasticity in midbrain sites critical for these behavioral and emotional processes has never been examined, though. By visualizing bromodeoxyuridine (BrdU) to label mitotic cells, NeuroD for neuronal precursors, and TUNEL to identify dying cells, we found that the midbrain dorsal raphe nucleus (DR, the source of most ascending serotoninergic projections) exhibited significant neuroplasticity in response to motherhood...
November 19, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27895048/parecoxib-inhibits-glioblastoma-cell-proliferation-migration-and-invasion-by-up-regulating-mirna-29c
#8
Lin-Yong Li, Jie Xiao, Qiang Liu, Kun Xia
Glioblastoma (GBM) is one of the most lethal brain cancers worldwide, and there is an urgent need for development of novel therapeutic approaches. Parecoxib is a well-known cyclooxygenase-2 (COX-2) inhibitor, had already been developed for postoperative analgesia with high efficience and low adverse reaction. Recent study suggested that parecoxib potently enhances immunotherapeutic efficacy of GBM, but its effects on GBM growth, migration and invasion had never been studied before. In the present study, MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) and, BrdU (5-Bromo-2-deoxyUridine) incorporation assays were used to evaluate the cell proliferation of GBM cells...
November 28, 2016: Biology Open
https://www.readbyqxmd.com/read/27894407/mirna-378-controls-cell-proliferation-in-rabbit-umbilical-cord-mesenymal-stem-cells
#9
H Wang, Z Zhao, J Du, T Wang, L Yang, H Yu
Mesenchymal stem cells (MSC) are known to have the ability to differentiate into various lineages of mesenchymal tissue. They are widely distributed in a variety of tissues in the body and are also present in the foetal environment. MicroRNAs (miRNAs) are a fundamental class of biological molecules that play a crucial role in development. In this study, microRNA-378 and its predicted target (Sufu, suppressor of fused homolog) were used to study proliferation of rabbit umbilical cord mesenymal stem cells, luciferase reporter assay was used to assess and confirm the binding sequence of 3'untranslated region between microRNA-378 and Sufu...
October 31, 2016: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/27893223/intervention-with-the-mother-infant-relationship-reduces-cell-proliferation-in-the-locus-coeruleus-of-female-rat-pups
#10
Elisa Cristiana Winkelmann Duarte, Márcia Scherem de Azevedo, Gabriela Augusta Mateus Pereira, Marilda da Cruz Fernandes, Aldo Bolten Lucion
The Locus Coeruleus (LC) is a noradrenergic nucleus involved in several neuroendocrine and behavioral functions. During the neonatal period, the LC is critical for olfactory learning. Full development occurs during the early postnatal period. Environmental interventions after birth may affect neurogenesis. In rats, the neonatal handling procedure has been used as a model to analyze the effects of environmental intervention early in life. It has been related to several long-lasting behavioral and neuroendocrine changes...
November 28, 2016: Behavioral Neuroscience
https://www.readbyqxmd.com/read/27892792/e2fl1-is-a-meiosis-specific-transcription-factor-in-the-protist-tetrahymena-thermophila
#11
Jing Zhang, Miao Tian, Guan-Xiong Yan, Anura Shodhan, Wei Miao
Members of the E2F family of transcription factors have been reported to regulate the expression of genes involved in cell cycle control, DNA replication, and DNA repair in multicellular eukaryotes. Here, E2FL1, a meiosis-specific E2F transcription factor gene, was identified in the model ciliate Tetrahymena thermophila. Loss of this gene resulted in meiotic arrest prior to anaphase I. The cytological experiments revealed that the meiotic homologous pairing was not affected in the absence of E2FL1, but the paired homologous chromosomes did not separate and assumed a peculiar tandem arrangement...
November 28, 2016: Cell Cycle
https://www.readbyqxmd.com/read/27892604/interleukin-il-6-modulates-transforming-growth-factor-%C3%AE-receptor-i-and-ii-tgf-%C3%AE-ri-and-ii-function-in-epidermal-keratinocytes
#12
Lerin R Luckett-Chastain, Mackenzie L Cottrell, Bethany M Kawar, Michael A Ihnat, Randle M Gallucci
It been shown that IL-6 modulates TGF-β1 expression in fibroblasts, however; what role IL-6 plays concerning TGF-βR expression and function in skin is unknown. Therefore, the aim of this study was to investigate the mechanism by which IL-6 might modulates TGF-β receptors in skin. Skin from WT, IL-6 overexpressing mice, and IL-6 treated keratinocyte cultures were analyzed for TGF-βRI and TGF-βRII expression via histology, PCR, and flow cytometry. Receptor function was assessed by cell migration, bromodeoxyuridine (BrdU) proliferation assays, and Smad7 expression and Smad2/3 phosphorylation...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27890011/microrna-mir-130b-promotes-wear-particle-induced-osteolysis-via-down-regulating-frizzled-related-protein-frzb
#13
De-Zhi Zheng, Lei Wang, Yan-Min Bu, Jun Liu
Periprosthetic osteolysis induced by wear particles can lead to aseptic loosening, one main reason of arthroplasty failure. However, the role of microRNA-130b (miR-130b) in particle-induced osteolysis (PIO) has not been explored yet. In this study, PIO models were established in C57BL/J6 mice via the implantation of Co-Cr-Mo alloy particles, and evaluated by detecting tartrate-resistant acid phosphatase (TRAP) activity and bone resorption in the calvaria. Mouse preosteoblast MC3T3-E1 cells were cultured to receive particle stimulation in vitro...
November 23, 2016: Current Neurovascular Research
https://www.readbyqxmd.com/read/27888101/post-hatching-brain-morphogenesis-and-cell-proliferation-in-the-pulse-type-mormyrid-mormyrus-rume-proboscirostris
#14
Milka Radmilovich, Isabel Barreiro, Leticia Iribarne, Kirsty Grant, Frank Kirschbaum, María E Castelló
The anatomical organization of African Mormyrids' brain is a clear example of departure from the average brain morphotype in teleosts, probably related to functional specialization associated to electrosensory processing and sensory-motor coordination. The brain of Mormyrids is characterized by a well-developed rhombencephalic electrosensory lobe interconnected with relatively large mesencephalic torus semicircularis and optic tectum, and a huge and complex cerebellum. This unique morphology might imply cell addition from extraventricular proliferation zones up to late developmental stages...
November 22, 2016: Journal of Physiology, Paris
https://www.readbyqxmd.com/read/27886192/phytanic-acid-attenuates-insulin-like-growth-factor-1-activity-via-nitric-oxide-mediated-%C3%AE-secretase-activation-in-rat-aortic-smooth-muscle-cells-possible-implications-for-pathogenesis-of-infantile-refsum-disease
#15
Gursev S Dhaunsi, Mayra Alsaeid, Saghir Akhtar
BACKGROUND: Infantile Refsum disease (IRD), a peroxisomal disease with defective phytanic acid oxidation, causes neurological impairment and development delay. Insulin-like growth factor-1 (IGF-1) regulates child development and to understand molecular mechanism(s) of IRD, we examined the effect of PA on IGF-1 activity. METHODS: BrdU incorporation was measured in rat aortic smooth muscle cell (SMC) cultures following treatment with fetal bovine serum (FBS), basic fibroblast growth factor (bFGF), platelet-derived growth factor (PDGF) or IGF-1 in the absence or presence of PA...
November 25, 2016: Pediatric Research
https://www.readbyqxmd.com/read/27882149/combination-of-endogenous-neural-stem-cell-mobilization-and-lithium-chloride-treatment-for-hydrocephalus-following-intraventricular-hemorrhage
#16
Qiang Yuan, Xing-Yao Bu, Zhao-Yue Yan, Xian-Zhi Liu, Zhen-Yu Wei, Chun-Xiao Ma, Ming-Qi Qu
As there are multiple factors causing hydrocephalus subsequent to intraventricular hemorrhage (IVH), it is difficult to achieve the best treatment effect using a single drug alone. In the present study, the protective effect of combination treatment with granulocyte-colony stimulating factor (G-CSF) and lithium chloride against hydrocephalus after IVH was investigated. A total of 130 adult male Sprague-Dawley rats were divided into five groups, including the IVH control, G-CSF treatment, lithium chloride treatment, combination treatment and sham surgery groups...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27880067/cell-proliferation-downregulated-by-tgf-%C3%AE-2-triggered-g1-s-checkpoint-in-clinical-cafs
#17
Jinliang Wu, Rong Fu, Xiaolei Huang, Yang Xue, Yan Xu, Jiangmin Zhao, Jun Mi
The metabolic reprogramming is indispensible for the fast growth of tumor cells. The metabolism of CAFs is reprogrammed to aerobic glycolysis too. However, it is not clear whether this metabolic reprogramming promotes the growth of CAFs themselves. In this study, we found that the proliferation rate of CAFs was slower than NAFs, which was determined by cell counting, BrdU assay and flow cytometry analysis. Moreover, we found TGF-β signaling regulated cell growth of CAF through RNA-sequencing analysis and Western blot, which was further supported by the observation that TGF-β2 was highly expressed in colon cancer tissues...
November 23, 2016: Cell Cycle
https://www.readbyqxmd.com/read/27878640/in-vitro-examination-of-the-biocompatibility-of-fibroblast-cell-lines-on-alloplastic-meshes-and-sterilized-polyester-mosquito-mesh
#18
R Wiessner, T Kleber, N Ekwelle, K Ludwig, D-U Richter
INTRODUCTION: The use of alloplastic implants for tissue strengthening when treating hernias is an established therapy worldwide. Despite the high incidence of hernias in Africa and Asia, the implantation of costly mesh netting is not financially feasible. Because of that various investigative groups have examined the use of sterilized mosquito netting. The animal experiments as well as the clinical trials have both shown equivalent short- and long-term results. The goal of this paper is the comparison of biocompatibility of human fibroblasts on the established commercially available nets and on sterilized polyester mosquito mesh over a period of 12 weeks...
November 23, 2016: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/27863492/defective-autophagy-leads-to-the-suppression-of-stem-like-features-of-cd271-osteosarcoma-cells
#19
Dong Zhang, Qing Zhao, Hao Sun, Lijuan Yin, Jiajun Wu, Jun Xu, Tianxiang He, Chunlei Yang, Chengwei Liang
BACKGROUND: As an important stress-response mechanism, autophagy plays crucial role in the tumor formation and drug resistance of cancer cells including osteosarcoma (OS). OS cancer stem cells (CSCs) also are considered a key factor of tumorigenesis, drug resistance and tumor recurrence. However, the relationship between autophagy and OS CSCs still remains unclear. METHODS: CD271+ OS CSCs and CD271- OS cells were isolated by magnetic activated cell sorting. The autophagy level was evaluated by the mRNA expression of autophagy genes, the protein level of LC3II and p62, and the mean number of GFP-LC3 dot per cell...
November 18, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27863397/targeting-gli-by-gant61-involves-mechanisms-dependent-on-inhibition-of-both-transcription-and-dna-licensing
#20
Ruowen Zhang, Jiahui Wu, Sylvain Ferrandon, Katie J Glowacki, Janet A Houghton
The GLI genes are transcription factors and in cancers are oncogenes, aberrantly and constitutively activated. GANT61, a specific GLI inhibitor, has induced extensive cytotoxicity in human models of colon cancer. The FOXM1 promoter was determined to be a transcriptional target of GLI1. In HT29 cells, inhibition of GLI1 binding at the GLI consensus sequence by GANT61 led to inhibited binding of Pol II, the pause-release factors DSIF, NELF and p-TEFb. The formation of R-loops (RNA:DNA hybrids, ssDNA), were reduced by GANT61 at the FOXM1 promoter...
November 15, 2016: Oncotarget
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