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International Journal of Biological Sciences

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https://www.readbyqxmd.com/read/27877091/conserved-chemosensory-proteins-in-the-proboscis-and-eyes-of-lepidoptera
#1
Jiao Zhu, Immacolata Iovinella, Francesca Romana Dani, Yu-Ling Liu, Ling-Qiao Huang, Yang Liu, Chen-Zhu Wang, Paolo Pelosi, Guirong Wang
Odorant-binding proteins (OBPs) and chemosensory proteins (CSPs) are endowed with several different functions besides being carriers for pheromones and odorants. Based on a previous report of a CSP acting as surfactant in the proboscis of the moth Helicoverpa armigera, we revealed the presence of orthologue proteins in two other moths Plutella xylostella and Chilo suppressalis, as well as two butterflies Papilio machaon and Pieris rapae, using immunodetection and proteomic analysis. The unusual conservation of these proteins across large phylogenetic distances indicated a common specific function for these CSPs...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27877090/genetic-variant-in-flavin-containing-monooxygenase-3-alters-lipid-metabolism-in-laying-hens-in-a-diet-specific-manner
#2
Jing Wang, Cheng Long, Haijun Zhang, Yanan Zhang, Hao Wang, Hongyuan Yue, Xiaocui Wang, Shugeng Wu, Guanghai Qi
Genetic variant T329S in flavin-containing monooxygenase 3 (FMO3) impairs trimethylamine (TMA) metabolism in birds. The TMA metabolism that under complex genetic and dietary regulation, closely linked to cardiovascular disease risk. We determined whether the genetic defects in TMA metabolism may change other metabolic traits in birds, determined whether the genetic effects depend on diets, and to identify genes or gene pathways that underlie the metabolic alteration induced by genetic and diet factors. We used hens genotyped as FMO3 c...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27877089/insights-into-the-nanog-gene-a-propeller-for-stemness-in-primitive-stem-cells
#3
REVIEW
Wei Zhang, Yi Sui, Jun Ni, Tao Yang
Self-renewal and pluripotency are two major characteristics of embryonic stem cells (ESCs) that allow ESCs to maintain stem cell population, and differentiate into multiple types of adult tissues. Nanog is the key transcription factor that controls both self-renewal and pluripotency of ESCs. Similarly, cancer stem cells (CSCs) are capable of preserving population and initiating new tumor development by self-renewal. Expression of Nanog family proteins can be increased in many types of cancer which is correlated with tumor outcomes...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27877088/aloe-emodin-suppresses-hypoxia-induced-retinal-angiogenesis-via-inhibition-of-hif-1%C3%AE-vegf-pathway
#4
Jianming Wu, Xiao Ke, Wei Wang, Hongcheng Zhang, Na Ma, Wei Fu, Manxi Zhao, Xiaoping Gao, Xiaofeng Hao, Zhirong Zhang
Background: Aloe-emodin (AE) has been reported to possess the antiangiogenic effect on laser induced choroidal neovascularization. AE inhibits the vessel formation in the zebrafish embryos. However, it is still unclear whether AE can alleviate neovascularization. Here, we investigated the inhibitory effect of AE on the hypoxia-induced retinal neovascularization and the possible mechanisms. Methods: We established a vascular endothelial growth factor (VEGF) secretion model under chemical induced hypoxia by exposure of 150 µM CoCl2 to the ARPE-19 cells, then treated the cells with different concentrations of AE (0...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27877087/il28b-snp-rs12979860-is-the-critical-predictor-for-sustained-viral-response-in-chinese-children-aged-1-to-6-years-with-chronic-hepatitis-c
#5
Yan-Wei Zhong, Hong-Fei Zhang, Yan-Min Shi, Yong-Li Li, Fang Chu, Zhi-Qiang Xu, Da-Wei Chen, Yu Gan, Fu-Chuan Wang, Mei-Lei Gu, Yi Dong, Shi-Shu Zhu, Ce Shi, Hua-Hao Fan, Xiu-Chang Zhang, Min Zhang
Clinical data on children with chronic hepatitis C (CHC) remain extremely limited. This study investigated sustained virologic response (SVR) to alfa-interferon 2b plus RBV treatment in children aged 1-6 years with unsafe injection-acquired CHC. 154 children with CHC aged 1 to 6 years were enrolled, 101 of them were male (65.6%) and 53 were female (34.4%), and they were treated with alfa-interferon at a dose of 1-5 MIU/m(2) 3 times weekly plus oral RBV (15 mg/kg/day) for 48 weeks. 57(39.3 %) of them were genotype 1b, 73(50...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27877086/ginsenoside-rg1-protects-against-oxidative-stress-induced-neuronal-apoptosis-through-myosin-iia-actin-related-cytoskeletal-reorganization
#6
Yan Wang, Qian Liu, Yingqiong Xu, Yuanyuan Zhang, Yanni Lv, Yisha Tan, Nan Jiang, Guosheng Cao, Xiaonan Ma, Jingrong Wang, Zhengyu Cao, Boyang Yu, Junping Kou
Oxidative stress-induced cytoskeletal dysfunction of neurons has been implicated as a crucial cause of cell apoptosis or death in the central nervous system (CNS) diseases, such as neurodegenerative and psychiatric diseases. The application of neuroprotectants rescuing the neurons from cytoskeletal damage and apoptosis can be a potential treatment for these CNS diseases. Ginsenoside Rg1 (Rg1), one of the major active components of ginseng, has been reported possessing notable neuroprotective activities. However, there is rare report about its effect on cytoskeleton and its undergoing mechanism...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27877085/the-evolving-functions-of-autophagy-in-ocular-health-a-double-edged-sword
#7
REVIEW
Peiwei Chai, Hongyan Ni, He Zhang, Xianqun Fan
Autophagy plays an adaptive role in cell survival, development, differentiation and intracellular homeostasis. Autophagy is recognized as a 'self-cannibalizing' process that is active during stresses such as starvation, chemotherapy, infection, ageing, and oxygen shortage to protect organisms from various irritants and to regenerate materials and energy. However, autophagy can also lead to a form of programmed cell death distinct from apoptosis. Components of the autophagic pathway are constitutively expressed at a high level in the eye, including in the cornea, lens, retina, and orbit...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27877084/rna-interference-of-chitin-synthase-genes-inhibits-chitin-biosynthesis-and-affects-larval-performance-in-leptinotarsa-decemlineata-say
#8
Ji-Feng Shi, Li-Li Mu, Xu Chen, Wen-Chao Guo, Guo-Qing Li
Dietary introduction of bacterially expressed double-stranded RNA (dsRNA) has great potential for management of Leptinotarsa decemlineata. Identification of the most attractive candidate genes for RNA interference (RNAi) is the first step. In the present paper, three complete chitin synthase cDNA sequences (LdChSAa, LdChSAb and LdChSB) were cloned. LdChSAa and LdChSAb, two splicing variants of LdChSA gene, were highly expressed in ectodermally-derived epidermal cells forming epidermis, trachea, foregut and hindgut, whereas LdChSB was mainly transcribed in midgut cells...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27877083/epstein-barr-virus-lytic-reactivation-regulation-and-its-pathogenic-role-in-carcinogenesis
#9
REVIEW
Hongde Li, Sufang Liu, Jianmin Hu, Xiangjian Luo, Namei Li, Ann M Bode, Ya Cao
Epstein-Barr virus (EBV) has been associated with several types of human cancers. In the host, EBV can establish two alternative modes of life cycle, known as latent or lytic and the switch from latency to the lytic cycle is known as EBV reactivation. Although EBV in cancer cells is found mostly in latency, a small number of lytically-infected cells promote carcinogenesis through the release of growth factors and oncogenic cytokines. This review focuses on the mechanisms by which EBV reactivation is controlled by cellular and viral factors, and discusses how EBV lytic infection contributes to human malignancies...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27877082/histone-deacetylase-inhibitor-trichostatin-a-promotes-the-apoptosis-of-osteosarcoma-cells-through-p53-signaling-pathway-activation
#10
Zhantao Deng, Xiaozhou Liu, Jiewen Jin, Haidong Xu, Qian Gao, Yong Wang, Jianning Zhao
Purpose: The purpose of this study was to investigate the profile of histone deacetylase (HDAC) activity and expression in osteosarcoma cells and tissues from osteosarcoma patients and to examine the mechanism by which a histone deacetylase (HDAC) inhibitor, Trichostatin A (TSA), promotes the apoptosis of osteosarcoma cells. Methods: HDAC activity and histone acetyltransferase (HAT) activity were determined in nuclear extracts of MG63 cells, hFOB 1.19 cells and tissues from 6 patients with primary osteosarcoma...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27877081/p-selectin-mediated-lox-expression-promotes-insulinoma-growth-in-rip1-tag2-mice-by-increasing-tissue-stiffness
#11
Cuiling Qi, Jialin Li, Simei Guo, Mengshi Li, Yuanyuan Li, Jiangchao Li, Qianqian Zhang, Lingyun Zheng, Xiaodong He, Xiaoming Zheng, Yanli He, Lijing Wang, Bo Wei
P-selectin, a cell adhesion molecule, is an important member of the selectin family. Recent studies have shown that P-selectin deletion inhibits tumor growth in Rip1-Tag2 mice by suppressing platelet accumulation in tumor tissues. This study aimed to evaluate whether and how P-selectin affects tumor stiffness in Rip1-Tag2 mice. To explore the role of P-selectin in tissue stiffness, we demonstrated that tumor progression in Rip1-Tag2 mice was correlated with tissue stiffness using immunofluorescence and histological staining...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27766041/an-efficient-light-inducible-p53-expression-system-for-inhibiting-proliferation-of-bladder-cancer-cell
#12
Fan Lin, Liang Dong, Weiming Wang, Yuchen Liu, Weiren Huang, Zhiming Cai
Optogenetic gene expression systems enable spatial-temporal modulation of gene transcription and cell behavior. Although applications in biomedicine are emerging, the utility of optogenetic gene switches remains elusive in cancer research due to the relative low gene activation efficiency. Here, we present an optimized CRISPR-Cas9-based light-inducible gene expression device that controls gene transcription in a dose-dependent manner. To prove the potential utility of this device, P53 was tested as a functional target in the bladder cancer cell models...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27766040/exosomes-from-human-synovial-derived-mesenchymal-stem-cells-prevent-glucocorticoid-induced-osteonecrosis-of-the-femoral-head-in-the-rat
#13
Shang-Chun Guo, Shi-Cong Tao, Wen-Jing Yin, Xin Qi, Jia-Gen Sheng, Chang-Qing Zhang
Osteonecrosis of the femoral head (ONFH) represents a debilitating complication following glucocorticoid (GC)-based therapy. Synovial-derived mesenchymal stem cells (SMSCs) can exert protective effect in the animal model of GC-induced ONFH by inducing cell proliferation and preventing cell apoptosis. Recent studies indicate the transplanted cells exert therapeutic effects primarily via a paracrine mechanism and exosomes are an important paracrine factor that can be directly used as therapeutic agents for tissue engineering...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27766039/from-nutrient-to-microrna-a-novel-insight-into-cell-signaling-involved-in-skeletal-muscle-development-and-disease
#14
Yong Zhang, Bing Yu, Jun He, Daiwen Chen
Skeletal muscle is a remarkably complicated organ comprising many different cell types, and it plays an important role in lifelong metabolic health. Nutrients, as an external regulator, potently regulate skeletal muscle development through various internal regulatory factors, such as mammalian target of rapamycin (mTOR) and microRNAs (miRNAs). As a nutrient sensor, mTOR, integrates nutrient availability to regulate myogenesis and directly or indirectly influences microRNA expression. MiRNAs, a class of small non-coding RNAs mediating gene silencing, are implicated in myogenesis and muscle-related diseases...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27766038/indoxyl-sulfate-enhance-the-hypermethylation-of-klotho-and-promote-the-process-of-vascular-calcification-in-chronic-kidney-disease
#15
Jing Chen, Xiaoyan Zhang, Han Zhang, Tongqiang Liu, Hui Zhang, Jie Teng, Jun Ji, Xiaoqiang Ding
Chronic kidney disease (CKD) is a state of Klotho deficiency. The Klotho expression may be suppressed due to DNA hypermethylation in cancer cells so we have investigated the effects and possible mechanisms by which Klotho expression is regulated in human aortic smooth muscle cells (HASMCs). The vascular Klotho hypermethylation in radial arteries of patients with end-stage renal disease was described. Cultured HASMCs and 5/6-nephrectomized Sprague Dawley (SD) rats treated with indoxyl sulfate (IS) were used as in vitro and in vivo models, respectively...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27766037/deficiency-of-dj-1-ameliorates-liver-fibrosis-through-inhibition-of-hepatic-ros-production-and-inflammation
#16
Yingxue Yu, Xuehua Sun, Jinyang Gu, Chang Yu, Yankai Wen, Yueqiu Gao, Qiang Xia, Xiaoni Kong
Liver fibrosis is a global health problem and previous studies have demonstrated that reactive oxygen species (ROS) play important roles in fibrogenesis. Parkinson disease (autosomal recessive, early onset) 7 (Park7) also called DJ-1 has an essential role in modulating cellular ROS levels. DJ-1 therefore may play functions in liver fibrogenesis and modulation of DJ-1 may be a promising therapeutic approach. Here, wild-type (WT) and DJ-1 knockout (DJ-1 KO) mice were administrated with carbon tetrachloride (CCl4) to induce liver fibrosis or acute liver injury...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27766036/mir-628-promotes-burn-induced-skeletal-muscle-atrophy-via-targeting-irs1
#17
Yonghui Yu, Xiao Li, Lingying Liu, Jiake Chai, Zhang Haijun, Wanli Chu, Huinan Yin, Li Ma, Hongjie Duan, Mengjing Xiao
Skeletal muscle atrophy is a common clinical feature among patients with severe burns. Previous studies have shown that miRNAs play critical roles in the regulation of stress-induced skeletal muscle atrophy. Our previous study showed that burn-induced skeletal muscle atrophy is mediated by miR-628. In this study, compared with sham rats, rats subjected to burn injury exhibited skeletal muscle atrophy, as well as significantly decreased insulin receptor substrate 1 (IRS1) protein expression and significantly increased skeletal muscle cell apoptosis...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27766035/dmp1-null-mice-develop-a-unique-osteoarthritis-like-phenotype
#18
Qi Zhang, Shuxian Lin, Ying Liu, Baozhi Yuan, Steph E Harris, Jian Q Feng
Patients with hypophosphatemia rickets (including DMP1 mutations) develop severe osteoarthritis (OA), although the mechanism is largely unknown. In this study, we first identified the expression of DMP1 in hypertrophic chondrocytes using immunohistochemistry (IHC) and X-gal analysis of Dmp1-knockout-lacZ-knockin heterozygous mice. Next, we characterized the OA-like phenotype in Dmp1 null mice from 7-week-old to one-year-old using multiple techniques, including X-ray, micro-CT, H&E staining, Goldner staining, scanning electronic microscopy, IHC assays, etc...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27766034/expression-of-iron-regulatory-protein-1-is-regulated-not-only-by-hif-1-but-also-pcreb-under-hypoxia
#19
Qian-Qian Luo, Zhong-Ming Qian, Yu-Fu Zhou, Meng-Wan Zhang, Dang Wang, Li Zhu, Ya Ke
The inconsistent of responses of IRP1 and HIF-1 alpha to hypoxia and the similar tendencies in the changes of IRP1 and pCREB contents led us to hypothesize that pCREB might be involved in the regulation of IRP1 under hypoxia. Here, we investigated the role of pCREB in IRP1 expression in HepG2 cells under hypoxia using quantitative PCR, western blot, immunofluorescence, electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (ChIP). We demonstrated that 1) Hypoxia increased pCREB levels inside of the nucleus; 2) Putative CREs were found in the IRP1 gene; 3) Nuclear extracts of HepG2 cells treated with hypoxia could bind to CRE1 and CRE3, and 100-fold competitor of putative CREs could abolish the binding activity to varying degrees; 4) pCREB was found in the CRE1 and CRE3 DNA-protein complexes of EMSA; 5) CRE1 and CRE3 binding activity of IRP1 depended on CREB activation but not on HIF-1; 6) Increased IRP1 expression under hypoxia could be prevented by LY294002; 7) ChIP assays demonstrated that pCREB binds to IRP1 promoter; and 8) HIF-1 and/or HIF-2 siRNA had no effect on the expression of pCREB and IRP1 proteins in cells treated with hypoxia for 8 hours...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27766033/changes-in-the-expression-of-fus-tls-in-spinal-cords-of-sod1-g93a-transgenic-mice-and-correlation-with-motor-neuron-degeneration
#20
Jiao Li, Yi Lu, Huiting Liang, Chunyan Tang, Lei Zhu, Jie Zhang, Renshi Xu
In order to searching the possible pathogenesis of amyotrophic lateral sclerosis (ALS), we examined the expression and distribution of FUS/TLS protein in the different anatomic regions, segments and neural cells of adult spinal cord at the different stages of the SOD1 wild-type and G93A transgenic mice using the fluorescent immunohistochemistry. Result revealed that, in the SOD1 wild-type mice, the FUS/TLS expression almost wasn't detected. However, in the SOD1 G93A mice, the FUS/TLS expression in the white matter was significantly more than that in the gray matter...
2016: International Journal of Biological Sciences
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