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Cell Biology International

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https://www.readbyqxmd.com/read/29790626/sphingosine-1-phosphate-promotes-the-proliferation-and-attenuates-apoptosis-of-endothelial-progenitor-cells-via-s1pr1-s1pr3-pi3k-akt-pathway
#1
Hang Wang, Hao Huang, Shi-Fang Ding
Sphingosine-1-phosphate (S1P) is a bioactive lysophospholipid that involves in numerous pathophysiological processes. Endothelial progenitor cells (EPCs) play a crucial role in endothelial repair and tumor angiogenesis. The aim of study was to determine the effects of S1P on proliferation and anti-apoptosis of EPCs and their signaling pathways. In this study, we showed that S1P, SEW2871 (a selective S1P receptor 1 (S1PR1) agonist ), or CYM5541 (a selective S1P receptor 3 (S1PR3) allosteric agonist promotes the proliferation and attenuates apoptosis of bone marrow (BM)-derived EPCs...
May 23, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29771451/modulation-of-inflammatory-and-hormonal-parameters-in-response-to-testosterone-therapy-effects-on-the-ventral-prostate-of-adult-rats
#2
Leonardo O Mendes, Anthony C S Castilho, Cristiane F Pinho, Bianca F Gonçalvez, Eduardo M Razza, Luiz Gustavo A Chuffa, Janete A Anselmo-Franci, Wellerson R Scarano, Francisco E Martinez
Testosterone is often recommended in the treatment of several aging-related conditions. However, there are still questions about the consequences of this therapy in terms of hormonal and inflammatory parameters that are crucial for prostate homeostasis.Thus, we investigate if the testosterone therapy (TT) modulates the hormone receptors and inflammatory cytokines in the ventral prostate of adult rats. Wistar rats aging 150 days were divided into two experimental groups(n = 10/group): T: received subcutaneous injections of testosterone cypionate (5mg/kg body weight) diluted in corn oil every other day for 4 weeks; and C: received corn oil as vehicle...
May 17, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29762881/colchicine-a-microtubule-disassembling-drug-in-the-therapy-of-cardiovascular-diseases
#3
George N Chaldakov
Colchicum autumnale, from which colchicine has been isolated more than 100 years ago, has been used as a treatment for pain and swelling for thousands of years. It is one of the few drugs known from that time period whose use has survived to modernity. Over the past decades, advances in the knowledge of (i) cytoskeletal microtubules (МТ), and (ii) anti-inflammatory and anti-fibrotic effects of colchicine, a classical MT-disassembling (tubulin-targeting) agent, have led to potential new uses for this very old drug extended beyond acute gouty arthritis and familial Mediterranean fever...
May 15, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29762880/trim22-knockdown-suppresses-chronic-myeloid-leukemia-via-inhibiting-pi3k-akt-mtor-signaling-pathway
#4
Liyin Li, Yanhua Qi, Xiaobo Ma, Guosheng Xiong, Lijun Wang, Cuixia Bao
Tripartite motif-containing 22 (TRIM22) is reported to participate in numerous cellular activities. Recent studies confirm that TRIM22 is a target gene for P53, and inhibits clonogenic growth of leukemic U-937 cells. The current study aims to discover the effect of TRIM22 in progression of human chronic myeloid leukemia (CML) and explore the related mechanism. TRIM22 was knocked down by siRNA transfection in CML cell K562. We observed that TRIM22 knockdown decreased proliferation and invasion in K562 cells...
May 15, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29752834/h-2-o-2-induces-pp2a-demethylation-to-downregulate-mtorc1-signaling-in-hek293-cells
#5
Shen Tang, Fu Qin, Xinhang Wang, Ziwei Liang, Haiqing Cai, Laiming Mo, Yue Huang, Boyin Liang, Xuejing Wei, Qingqing Ao, Yilu Xu, Yuyang Liu, Deqiang Xiao, Songchao Guo, Cailing Lu, Xiyi Li
Mammalian target of rapamycin (mTOR) is a Ser/Thr protein kinase that functions as an ATP and amino acid sensor to govern cell growth and proliferation by mediating mitogen- and nutrient-dependent signal transduction. Protein phosphatase 2A (PP2A), a ubiquitously expressed serine/threonine phosphatase, negatively regulates mTOR signaling. Methylation of PP2A is catalyzed by leucine carboxyl methyltransferase-1 (LCMT1) and reversed by protein phosphatase methylesterase 1 (PME-1), which regulates PP2A activity and substrate specificity...
May 12, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29745446/effects-of-vegf-ang-1-pla-nano-sustained-release-microspheres-on-proliferation-and-differentiation-of-adscs
#6
Yucang He, Zihao Li, Zhuojie Chen, Xiaofang Yu, Ziwan Ji, Jingping Wang, Yao Qian, Liqun Li
The improvement of fat graft viability might depend on the presence of multipotent resident adipose derived stem cells (ADSCs) which is the important component of stromal vascular fraction (SVF). Vascular endothelial growth factor (VEGF) and angiogenin-1 (Ang-1) are responsible for neovascularization. However, their half-life is too short to produce a biological effect. We thus investigated whether VEGF-ANG-1-polylactic acid (PLA) microspheres could enhance the angiogenic properties of ADSCs. PLA microspheres containing VEGF and ANG-1 were prepared by in vitro ultrasonic emulsification and characterized according to their encapsulation efficiency (EE), drug-loading rate (DL), particle size and drug release...
May 10, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29741292/microrna-150-restores-endothelial-cell-function-and-attenuates-vascular-remodeling-by-targeting-ptx3-through-the-nf-%C3%AE%C2%BAb-signaling-pathway-in-mice-with-acute-coronary-syndrome
#7
Xian-Yuan Luo, Xiao-Qing Zhu, Ying Li, Xue-Bin Wang, Wei Yin, Yi-Shan Ge, Wei-Min Ji
MicroRNAs have been known to function as important regulators in the vascular system, with various physiopathological effects such as vascular remodeling and hypertension modulation. We aimed to explore whether microRNA-150 (miR-150) regulates endothelial cell function and vascular remodeling in acute coronary syndrome (ACS), and the involvement of PTX3 and NF-κB signaling pathway. Ten normal mice and sixty ApoE-/- mice were chosen, and their coronary artery tissues and endothelial cells were extracted. ApoE-/- mice were injected with a series of inhibitors or mimics for miR-150, or siRNA against PTX3...
May 9, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29741224/angiotensin-ii-enhances-the-acetylation-and-release-of-hmgb1-in-raw264-7-macrophage
#8
Shanshan Zhou, Hongxiang Lu, Rong Chen, Yu Tian, YuanYuan Jiang, Shiqing Zhang, Daobing Ni, Zhaoliang Su, Xiaoyi Shao
The high-mobility group box-1 (HMGB1), as a highly conserved ubiquitous DNA-binding protein, has been widely studied in various diseases, including inflammation and tumor; however, fewer studies were focused on the mechanisms controlling HMGB1 release compared with the function of HMGB1. Previous studies have proven that ANG II can act as a pro-inflammatory cytokine, both of HMGB1 and ANG II were significantly upregulated in autoimmune diseases, however, the exact role of ANG II in regulating HMGB1 release have not been shown...
May 9, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29719094/protective-effect-of-retinoic-acid-receptor-%C3%AE-on-hypoxia-induced-epithelial-to-mesenchymal-transition-of-renal-tubular-epithelial-cells-associated-with-tgf-%C3%AE-mmp-9-pathway
#9
Ling Gong, Ling Jiang, Yuanhan Qin, Xingbo Jiang, Kunling Song, Xueyun Yu
Retinoic acid receptor α (RARα), a member of family of the nuclear retinoic acid receptors (RARs), plays an essential role in various chronic kidney diseases (CKD). Renal tubular epithelial to mesenchymal transition (EMT) is a common mechanism of progression of renal interstitial fibrosis (RIF). Hypoxia has been extensively considered as one of major inducers of renal tubular EMT. However, the effects of RARα on hypoxia-induced EMT have not yet been described so far. The aim of the present study was to explore the roles and potential mechanisms of RARα in hypoxia-induced EMT of renal tubular epithelial cells (RTECs)...
May 2, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29719087/regulation-of-inward-rectifier-potassium-current-ionic-channel-remodeling-by-at-1-calcineurin-nfat-signaling-pathway-in-stretch-induced-hypertrophic-atrial-myocytes
#10
Jionghong He, Yanan Xu, Long Yang, Guiling Xia, Na Deng, Yongyao Yang, Ye Tian, Zenan Fu, Yongqi Huang
Previous studies have shown that the activation of angiotensin II receptor type I (AT1 ) is attributed to cardiac remodeling stimulated by increased heart load, and that it is followed by the activation of the calcineurin-nuclear factor of activated T-cells (NFAT) signaling pathway. Additionally, AT1 has been found to be a regulator of cardiocyte ionic channel remodeling, and calcineurin-NFAT signals participate in the regulation of cardiocyte ionic channel expression. A hypothesis therefore follows that stretch stimulation may regulate cardiocyte ionic channel remodeling by activating the AT1 -calcineurin-NFAT pathway...
May 2, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29719086/overexpression-of-genes-associated-with-hypoxia-in-cattle-adapted-to-trans-himalayan-region-of-ladakh
#11
Preeti Verma, Ankita Sharma, Monika Sodhi, Kiran Thakur, Vijay Bharti, Prabhat Kumar, Arup Giri, Sahil Kalia, Shelesh Kumar Swami, Manishi Mukesh
Ladakh is an important part of the Trans-Himalayan region located between the Kunlun mountain range in the north and the main Great Himalayas to the south in the state of Jammu and Kashmir of India. The local cattle from Leh and Ladakh region, known as "Ladakhi cattle" is a unique germplasm having excellent adaptation potential to high altitude hypobaric stress. In the present study, an effort was made to evaluate the transcriptional pattern of hypoxia inducing factor-1 (HIF-1) and several of its regulated genes in PBMCs of local Ladakhi cattle, Holstein Frisian crosses, Jersey (exotic) maintained at high altitude region and Sahiwal (Bos indicus) and Karan Fries (cross bred) cattle maintained in tropical environment...
May 2, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29696738/dl-3-n-butylphthalide-promotes-dendrite-development-in-cortical-neurons-subjected-to-oxygen-glucose-deprivation-reperfusion
#12
Peng Zhang, Ruxiang Xu, Yang Guo, Jiazhen Qin, Yiwu Dai, Ning Liu, Cuiying Wu
The limited degree of functional recovery is closely associated with the condition of the periinfarct cortex after ischemic stroke. The model of oxygen-glucose deprivation in cultured neurons could partly simulate this condition. Proper dendritic morphology is crucial for the correct wiring of neuronal function. Hence, the question of how to facilitate the plasticity of neural dendrites is of great significance. DL-3-n-butylphthalide is an efficient medication for ischemic stroke. In this study, in addition to having neuroprotective effects, DL-3-n-butylphthalide could increase the number of primary and secondary dendrites and of dendritic tips as confirmed by Sholl analysis...
April 25, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29696735/effects-of-col8a1-on-the-proliferation-of-muscle-derived-satellite-cells
#13
Xiaofan Li, Zhao Wang, Huili Tong, Yunqin Yan, Shufeng Li
Collagen type VIII alpha 1 chain (COL8A1) is a component of the extracellular matrix. Our previous studies suggested that COL8A1 is associated with the proliferation of muscle-derived satellite cells (MDSCs). Additionally, it has been demonstrated that COL8A1 promotes the proliferation of smooth muscle cells and liver cancer cells. Therefore, we predicted that COL8A1 is associated with the proliferation of bovine MDSCs, which have potential applications in research. In this study, we constructed vectors to activate and repress COL8A1 in bovine MDSCs using the CRISPR/Cas9 technique and determined the effects of COL8A1 modulation by EdU labeling, western blotting, and dual-luciferase reporter assays...
April 25, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29696730/molecular-interactions-between-vinculin-and-phospholipids
#14
Wolfgang H Goldmann
The focal adhesion protein vinculin has been implicated in associating with soluble and membranous phospholipids. Detailed investigations over the past ten years describe the intermolecular interactions of the vinculin tail domain with soluble and membrane phospholipids. Previous studies have implied that the tail&s unstructured C-terminal region affects the mechanical behavior of cells and that the same region, at the molecular level, has bi-stable behavior sensitive to different protonation states. The aim of this short communication is to discuss whether the C-terminal vinculin tail (Vt) domain interacts favorably with membrane-embedded phospholipids such as PIP2 and that the region is also an anchor for lipid membranes...
April 25, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29745443/myricetin-induced-oxidative-stress-suppresses-murine-t-lymphocyte-activation
#15
Javad Ghassemi-Rad, Mahdis Maleki, Allison F Knickle, David W Hoskin
A number of polyphenolic compounds present in fruits and vegetables have the capacity to modulate immune responses; however, the impact of the common plant-derived flavonoid myricetin on T lymphocyte function has not been investigated. We show that myricetin inhibited mouse T lymphocyte activation by bead-immobilized anti-CD3 and anti-CD28 monoclonal antibodies, as indicated by a dose-dependent reduction in cell proliferation and decreased synthesis of interferon-γ, interleukin (IL)-2, IL-4, and IL-17 associated with different T helper cell subsets...
April 16, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29663649/trem2-inhibits-inflammatory-responses-in-mouse-microglia-by-suppressing-the-pi3k-nf-%C3%AE%C2%BAb-signaling
#16
Caixia Li, Bing Zhao, Caizhao Lin, Zhiping Gong, Xiaoxia An
This study aimed to investigate the effects of triggering receptor expressed on myeloid cell-2 (TREM2) on the production of pro-inflammatory mediators and cytokines induced by lipopolysaccharide (LPS) in BV2 microglia. TREM2 expression or TREM2-specific siRNA were used to induce TREM2 overexpression or silencing. The BV2 cells were pre-treated with the PI3K inhibitor of LY294002 for1 h and stimulated with LPS for 24 h. Then, the cell viability, apoptosis, phagocytosis, nitric oxide (NO), lactate dehydrogenase (LDH) and cytokine production, as well as the activation of AKT and NF-kB were determined, respectively...
April 16, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29663570/lefty-promotes-the-proliferation-and-invasion-of-trophoblast-cells-by-inhibiting-nodal-expression
#17
Hong Li, Rui Cao, Liang Bai, Xin-Min Qiao, Yong-Qin Zhao
Trophoblast cells play a vital role in embryo implantation. Exploring cytokines secreted by trophoblast cells will be significant in revealing the molecular mechanism of embryo implantation. In vitro-cultured trophoblast cells treated with Lefty revealed that Lefty could downregulate the expression of Nodal while promoting the expression of MMP-2 and MMP-9. Thus, Lefty may promote the proliferation and invasion of trophoblast cells, thereby reducing the amount of apoptosis of these cells. Lefty siRNA knockdown or overexpression of Nodal showed opposite effects to treatment with Lefty...
April 16, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29660213/role-of-ncor1-in-mitochondrial-function-and-energy-metabolism
#18
REVIEW
Tanes I Lima, Rafael R Valentim, Hygor N Araújo, André G Oliveira, Bianca C Favero, Eveline S Menezes, Rafaela Araújo, Leonardo R Silveira
Mitochondrial number and shape are constantly changing in response to increased energy demands. The ability to synchronize mitochondrial pathways to respond to energy fluctuations within the cell is a central aspect of mammalian homeostasis. This dynamic process depends on the coordinated activation of transcriptional complexes to promote the expression of genes encoding for mitochondrial proteins. Recent evidence has shown that the nuclear corepressor NCoR1 is an essential metabolic switch which acts on oxidative metabolism signaling...
April 16, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29660208/mir-340-suppresses-the-metastasis-by-targeting-epha3-in-cervical-cancer
#19
Hemei Xiao, Lijie Yu, Fengdan Li, Haili Wang, Wenxiu Li, Xinxia He
MicroRNAs (miRNAs ) play key roles in cervical cancer metastasis progression. Accumulated evidences have revealed that miRNAs are related to the pathophysiological process. However, the role of miR-340 in cervical cancer and how it works is still not fully interpreted. Using qRT-PCR to examine the expression of miR-340 in cervical cancer tissues. Transwell migration and invasion experiments were used to detect the role of miR-340 in migration and invasion. Luciferase reporter assay, qRT-PCR and Western blot were used to detect the relationship between miR-340 and EphA3...
April 16, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29660204/hypoxia-induces-apoptosis-of-mouse-spermatocyte-gc-2-cells-through-activation-of-autophagy
#20
Jian Zhou, Chun-Ya Qian, Rui-Qing Tong, Bin Wang, Xue-Lei Chen, Yan-Yan Zhuang, Fei Xia, Qi He, Jin-Xing Lv
The aim of this study was to investigate the underlying mechanisms of hypoxia-induced apoptosis of GC-2spd (GC-2) cells. The GC-2 cells were treated with or without hypoxia for 12, 24, 48 and 72 h. Apoptosis of GC-2 cells was detected using TUNEL and flow cytometry. Fluorescence microscopic was used to observe the autophagy of GC-2 cells. Hypoxia-inducible factor-1alpha (HIF-1α), apoptosis-related protein and marker protein of autophagy levels were measured by Western blotting. Hypoxia induced apoptosis and autophagy of GC-2 cells, and increased expression of HIF-1α, LC3-II, Beclin-1 and pro-apoptotic protein, but reduced p62 and anti-apoptotic protein level...
April 16, 2018: Cell Biology International
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