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https://www.readbyqxmd.com/read/29692083/-the-role-of-white-gene-and-its-mechanism-during-the-formation-of-curly-wing-in-drosophila-melanogaster
#1
Cheng Li Wu, Xin da Lin, Yan Yun Jiang, Shuai Shuai Meng
Curly wing is one of the most frequently used genetic markers in Drosophila melanogaster, but its molecular mechanism is remained unclear. Previous results have showed that physicochemical stimulation would affect the formation of the cruly wing. Our recent study found that H2 O2 could not only affect the eclosion rate of D. melanogaster, but also induce the formation of curly wing. Here, we aimed to uncover the specific factors influencing the formation of curly wing in D. melanogaster via changing the concentration of H2 O2 and the temperature as well as the time of H2 O2 treatment...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29691934/temperature-gradient-affects-differentiation-of-gene-expression-and-snp-allele-frequencies-in-the-dominant-lake-baikal-zooplankton-species
#2
Larry L Bowman, Elizaveta S Kondrateva, Maxim A Timofeyev, Lev Y Yampolsky
Local adaptation and phenotypic plasticity are main mechanisms of organisms' resilience in changing environments. Both are affected by gene flow and are expected to be weak in zooplankton populations inhabiting large continuous water bodies and strongly affected by currents. Lake Baikal, the deepest and one of the coldest lakes on Earth, experienced epilimnion temperature increase during the last 100 years, exposing Baikal's zooplankton to novel selective pressures. We obtained a partial transcriptome of Epischura baikalensis (Copepoda: Calanoida), the dominant component of Baikal's zooplankton, and estimated SNP allele frequencies and transcript abundances in samples from regions of Baikal that differ in multy-year average surface temperatures...
April 25, 2018: Molecular Ecology
https://www.readbyqxmd.com/read/29691881/3-hydroxyflavone-enhances-the-toxicity-of-zno-nanoparticles-in-vitro
#3
Yunfeng Luo, Chaohua Wu, Liangliang Liu, Yu Gong, Shengming Peng, Yixi Xie, Yi Cao
It is recently shown that flavonoids might reduce the toxicity of nanoparticles (NPs) due to their antioxidative properties. In this study, the influence of 3-hydroxyflavone (H3) on the toxicity of ZnO NPs was investigated. H3 increased hydrodynamic size, polydispersity index and absolute value of the zeta potential of ZnO NPs, which indicated that H3 could influence the colloidal aspects of NPs. Surprisingly, H3 markedly decreased the initial concentration of ZnO NPs required to induce cytotoxicity to Caco-2, HepG2, THP-1 and human umbilical vein endothelial cells, which suggested that H3 could promote the toxicity of ZnO NPs to both cancerous and normal cells...
April 25, 2018: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/29691806/phosphoproteome-profiling-revealed-abnormally-phosphorylated-ampk-and-atf2-involved-in-glucose-metabolism-and-tumorigenesis-of-gh-pas
#4
S Zhao, J Feng, C Li, H Gao, P Lv, J Li, Q Liu, Y He, H Wang, L Gong, D Li, Y Zhang
PURPOSE: Protein phosphorylation plays a key role in tumorigenesis and progression. However, little is known about the phosphoproteome profiles of growth hormone-secreting pituitary adenomas (GH-PAs). The aim of this study was to identify critical biomarkers and signaling pathways that might play important roles in GH-PAs and may, therefore, represent potential therapeutic targets. METHODS: The differential phosphoprotein expression patterns involved in GH-PAs were investigated by nano-LC-MS/MS in a group of samples...
April 24, 2018: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29691724/neuroimmunologic-and-neurotrophic-interactions-in-autism-spectrum-disorders-relationship-to-neuroinflammation
#5
REVIEW
Kshama Ohja, Evelyne Gozal, Margaret Fahnestock, Lu Cai, Jun Cai, Jonathan H Freedman, Andy Switala, Ayman El-Baz, Gregory Neal Barnes
Autism spectrum disorders (ASD) are the most prevalent set of pediatric neurobiological disorders. The etiology of ASD has both genetic and environmental components including possible dysfunction of the immune system. The relationship of the immune system to aberrant neural circuitry output in the form of altered behaviors and communication characterized by ASD is unknown. Dysregulation of neurotrophins such as BDNF and their signaling pathways have been implicated in ASD. While abnormal cortical formation and autistic behaviors in mouse models of immune activation have been described, no one theory has been described to link activation of the immune system to specific brain signaling pathways aberrant in ASD...
April 24, 2018: Neuromolecular Medicine
https://www.readbyqxmd.com/read/29691718/ursodeoxycholic-acid-inhibits-inflammatory-responses-and-promotes-functional-recovery-after-spinal-cord-injury-in-rats
#6
Wan-Kyu Ko, Seong Jun Kim, Min-Jae Jo, Hyemin Choi, Donghyun Lee, Il Keun Kwon, Soo-Hong Lee, In-Bo Han, Seil Sohn
The aim of this study was to investigate the anti-inflammatory effects by ursodeoxycholic acid (UDCA) in rats with a spinal cord injury (SCI). A moderate mechanical compression injury was imposed on adult Sprague-Dawley (SD) rats. The post-injury locomotor functions were assessed using the Basso, Beattie, and Bresnahan (BBB) locomotor scale and the tissue volume of the injured region was analyzed using hematoxylin and eosin staining. The pro-inflammatory factors were evaluated by immunofluorescence (IF) staining, a quantitative real-time polymerase chain reaction (qRT-PCR), and enzyme-linked immunosorbent assay (ELISA)...
March 20, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29691711/biomechanics-and-mechanical-signaling-in-the-ovary-a-systematic-review
#7
REVIEW
Jaimin S Shah, Reem Sabouni, Kamaria C Cayton Vaught, Carter M Owen, David F Albertini, James H Segars
PURPOSE: Mammalian oogenesis and folliculogenesis share a dynamic connection that is critical for gamete development. For maintenance of quiescence or follicular activation, follicles must respond to soluble signals (growth factors and hormones) and physical stresses, including mechanical forces and osmotic shifts. Likewise, mechanical processes are involved in cortical tension and cell polarity in oocytes. Our objective was to examine the contribution and influence of biomechanical signaling in female mammalian gametogenesis...
April 24, 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29691652/distribution-and-co-localization-of-diversified-natriuretic-peptides-in-the-eel-heart
#8
Yoshio Takei, Noriko Nemoto, Toru Kameya, Hideaki Tamaki, Osamu Katsumata, Susumu Hyodo, Makoto Kusakabe
Atrial and B-type natriuretic peptides (ANP and BNP) are cardiac hormones important for cardiovascular and body fluid regulation. In some teleost species, an additional member of the natriuretic peptide family, ventricular NP (VNP), has been identified. In this study, we examine tissue distribution of these three NPs in the eel heart. Quantitative real-time PCR showed that anp is almost exclusively expressed in atria, bnp equally in atria and ventricles and vnp three-fold more in ventricles than in atria. The amount of bnp transcript overall in the heart was 1/10 those of anp and vnp...
April 25, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29691590/enhancer-reprogramming-in-tumor-progression-a-new-route-towards-cancer-cell-plasticity
#9
REVIEW
Luca Fagnocchi, Vittoria Poli, Alessio Zippo
Cancer heterogeneity arises during tumor progression as a consequence of genetic insults, environmental cues, and reversible changes in the epigenetic state, favoring tumor cell plasticity. The role of enhancer reprogramming is emerging as a relevant field in cancer biology as it supports adaptation of cancer cells to those environmental changes encountered during tumor progression and metastasis seeding. In this review, we describe the cancer-related alterations that drive oncogenic enhancer activity, leading to dysregulated transcriptional programs...
April 24, 2018: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29691583/-establishment-and-characterization-of-a549-tumor-monoclonal-cell-line-with-uchl1-gene-deletion
#10
Yu Zhang, Yan Shi, Di Song, Xuan Zhang, Lin Yu, Ya-Ping He, Zhao-Gui Sun
The purpose of this study was to investigate the effects of ubiquitin C-terminal hydrolase-L1 (UCHL1) on non-small cell lung cancer cell line A549. UCHL1 gene knockout A549 cell line was constructed by CRISPR-CAS9 gene editing technique. The mRNA and protein levels of UCHL1 were examined by RT-PCR and Western blot, respectively. Cell proliferation and cycles were analyzed by CCK-8 method and flow cytometry, respectively. The sensitivity of A549 cells to cisplatin was detected by CCK-8 method. Migration ability of A549 cells was detected by scratch assay and Transwell test, and p-Erk expression level was assessed by Western blot...
April 25, 2018: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/29691553/-klf10-silencing-inhibited-mechanical-force-induced-osteogenic-differentiation-of-human-periodontal-ligament-cells
#11
Xiao-Qin Yu, Yun-Long Li, Jin-Yu Gao, Hua Liu
PURPOSE: To investigate the effect of Klf10 silence on human periodontal ligament cells (HPDLCs) under mechanical force. METHODS: HPDLCs were isolated and transfected with Klf10 siRNA, and then exposed to centrifugal force for 6 h at 631 r/min. Purmorphamine, an hedgehog signaling pathway agonist, was used for intervention. The activity of alkaline phosphatase (ALP) was detected by ELISA. RT-PCR and Western blot were performed to detect the mRNA and protein expression of Klf10, Runt related transcription factor 2 (Runx2), osteopontin (OPN) and osteocalcin (OCN)...
December 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29691463/cholesterol-dependent-cytolysins-impair-pro-inflammatory-macrophage-responses
#12
Pushpak Bhattacharjee, Peter A Keyel
Necrotizing soft tissue infections are lethal polymicrobial infections. Two key microbes that cause necrotizing soft tissue infections are Streptococcus pyogenes and Clostridium perfringens. These pathogens evade innate immunity using multiple virulence factors, including cholesterol-dependent cytolysins (CDCs). CDCs are resisted by mammalian cells through the sequestration and shedding of pores during intrinsic membrane repair. One hypothesis is that vesicle shedding promotes immune evasion by concomitantly eliminating key signaling proteins present in cholesterol-rich microdomains...
April 24, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29691438/the-hippo-signaling-transducer-taz-regulates-mammary-gland-morphogenesis-and-carcinogen-induced-mammary-tumorigenesis
#13
Kayla E Denson, Ashley L Mussell, He Shen, Alexander Truskinovsky, Nuo Yang, Natesh Parashurama, Yanmin Chen, Costa Frangou, Fajun Yang, Jianmin Zhang
Hippo signaling pathway is an evolutionarily conserved pathway that controls organ size by regulating cell proliferation, apoptosis and stem cell self-renewal. TAZ (transcriptional coactivator with the PDZ-binding motif) is a key downstream effector of the mammalian Hippo pathway. Here, using a transgenic mouse model with mammary-gland-specific expression of constitutively active TAZ, we found that TAZ induction in mammary epithelial cells was associated with an increase in mammary glandular size, which probably resulted from adipocyte hypertrophy...
April 24, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29691386/toll-like-receptors-mediated-pathways-activate-inflammatory-responses-in-the-esophageal-mucosa-of-adult-eosinophilic-esophagitis
#14
Ángel Arias, María Vicario, David Bernardo, José M Olalla, Marina Fortea, Ana Montalban-Arques, Pilar Martínez-Fernández, Ana M González-Castro, Teresa Mota-Huertas, Laura Arias-González, Alfredo J Lucendo
OBJECTIVES: Esophageal microbiota and regulation of adaptive immunity are increasingly being investigated in eosinophilic esophagitis (EoE). Toll-like receptors (TLRs) play a central role in the initiation and maintenance of innate immune activity. Our objective was to characterize the esophageal and duodenal innate immune response in EoE and its modulation by dietary therapy. METHODS: Esophageal and duodenal biopsy samples were collected from 10 adults with untreated EoE, before and after effective treatment with a six-food elimination diet (SFED), and 10 controls with normal esophagus...
April 25, 2018: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/29691375/thc-exposure-of-human-ipsc-neurons-impacts-genes-associated-with-neuropsychiatric-disorders
#15
Boris Guennewig, Maina Bitar, Ifeanyi Obiorah, James Hanks, Elizabeth A O'Brien, Dominik C Kaczorowski, Yasmin L Hurd, Panos Roussos, Kristen J Brennand, Guy Barry
There is a strong association between cannabis use and schizophrenia but the underlying cellular links are poorly understood. Neurons derived from human-induced pluripotent stem cells (hiPSCs) offer a platform for investigating both baseline and dynamic changes in human neural cells. Here, we exposed neurons derived from hiPSCs to Δ9 -tetrahydrocannabinol (THC), and identified diagnosis-specific differences not detectable in vehicle-controls. RNA transcriptomic analyses revealed that THC administration, either by acute or chronic exposure, dampened the neuronal transcriptional response following potassium chloride (KCl)-induced neuronal depolarization...
April 25, 2018: Translational Psychiatry
https://www.readbyqxmd.com/read/29691371/helicobacter-pylori-induced-il-33-modulates-mast-cell-responses-benefits-bacterial-growth-and-contributes-to-gastritis
#16
Yi-Pin Lv, Yong-Sheng Teng, Fang-Yuan Mao, Liu-Sheng Peng, Jin-Yu Zhang, Ping Cheng, Yu-Gang Liu, Hui Kong, Ting-Ting Wang, Xiao-Long Wu, Chuan-Jie Hao, Weisan Chen, Shi-Ming Yang, Yong-Liang Zhao, Bin Han, Qiang Ma, Quan-Ming Zou, Yuan Zhuang
Interleukin (IL)-induced inflammatory responses are critical for the pathogenesis of Helicobacter pylori (H. pylori)-induced gastritis. IL-33 represents a recently discovered proinflammatory cytokine involved in inflammatory diseases, but its relevance to H. pylori-induced gastritis is unknown. Here, we found that gastric IL-33 mRNA and protein expression were elevated in gastric mucosa of both patients and mice infected with H. pylori, which is positively correlated with bacterial load and the degree of gastritis...
April 25, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29691367/upregulation-of-sall4-by-egfr-activation-regulates-the-stemness-of-cd44-positive-lung-cancer
#17
Wenjing Du, Lan Ni, Baojun Liu, Ying Wei, Yubao Lv, Sujing Qiang, Jingcheng Dong, Xijun Liu
The transcriptional factor SALL4, an important stem cell regulator, is expressed in hematopoietic stem cells and various malignancies, but its role in EGFR-mutated NSCLCs has not been studied yet. Here, we report that the expression of Sal-like protein 4 (SALL4), was significantly higher in EGFR mutated lung tumors than in non-tumor tissue. SALL4-high lung cancer patients had poorer prognosis after surgery than SALL4-low patients. The expression of SALL4 could be induced by the activation of EGFR through the extracellular signal-regulated kinase 1/2 (ERK1/2) signaling pathway...
April 25, 2018: Oncogenesis
https://www.readbyqxmd.com/read/29691342/human-cytomegalovirus-encodes-a-novel-flt3-receptor-ligand-necessary-for-hematopoietic-cell-differentiation-and-viral-reactivation
#18
Lindsey B Crawford, Jung Heon Kim, Donna Collins-McMillen, Byeong-Jae Lee, Igor Landais, Christine Held, Jay A Nelson, Andrew D Yurochko, Patrizia Caposio
The ability of human cytomegalovirus (HCMV) to reactivate from latent infection of hematopoietic progenitor cells (HPCs) is intimately linked to cellular differentiation. HCMV encodes UL7 that our group has shown is secreted from infected cells and induces angiogenesis. In this study, we show that UL7 is a ligand for Fms-like tyrosine kinase 3 receptor (Flt-3R), a well-known critical factor in HPC differentiation. We observed that UL7 directly binds Flt-3R and induces downstream signaling cascades, including phosphatidylinositol 3-kinase (PI3K)/Akt and mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) pathways...
April 24, 2018: MBio
https://www.readbyqxmd.com/read/29691338/the-efficacy-of-the-interferon-alpha-beta-response-versus-arboviruses-is-temperature-dependent
#19
Whitney C Lane, Matthew D Dunn, Christina L Gardner, L K Metthew Lam, Alan M Watson, Amy L Hartman, Kate D Ryman, William B Klimstra
Interferon alpha/beta (IFN-α/β) is a critical mediator of protection against most viruses, with host survival frequently impossible in its absence. Many studies have investigated the pathways involved in the induction of IFN-α/β after virus infection and the resultant upregulation of antiviral IFN-stimulated genes (ISGs) through IFN-α/β receptor complex signaling. However, other than examining the effects of genetic deletion of induction or effector pathway components, little is known regarding the functionality of these responses in intact hosts and whether host genetic or environmental factors might influence their potency...
April 24, 2018: MBio
https://www.readbyqxmd.com/read/29691331/gabaergic-local-interneurons-shape-female-fruit-fly-response-to-mating-songs
#20
Daichi Yamada, Hiroshi Ishimoto, Xiaodong Li, Tsunehiko Kohashi, Yuki Ishikawa, Azusa Kamikouchi
Many animals use acoustic signals to attract a potential mating partner. In fruit flies ( Drosophila melanogaster ), the courtship pulse song has a species-specific inter-pulse interval (IPI) that activates mating. Although a series of auditory neurons in the fly brain exhibit different tuning patterns to IPIs, it is unclear how the response of each neuron is tuned. Here we studied the neural circuitry regulating the activity of AMMC-B1 neurons, key secondary auditory neurons in the excitatory neural pathway that relay song information...
April 24, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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