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Journal of Cellular and Molecular Medicine

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https://www.readbyqxmd.com/read/28326667/the-v2-receptor-antagonist-tolvaptan-raises-cytosolic-calcium-and-prevents-aqp2-trafficking-and-function-an-in-vitro-and-in-vivo-assessment
#1
Grazia Tamma, Annarita Di Mise, Marianna Ranieri, Ari Geller, Roberto Tamma, Alberta Zallone, Giovanna Valenti
Tolvaptan, a selective vasopressin V2 receptor antagonist, is a new generation diuretic. Its clinical efficacy is in principle due to impaired vasopressin-regulated water reabsorption via aquaporin-2 (AQP2). Nevertheless, no direct in vitro evidence that tolvaptan prevents AQP2-mediated water transport, nor that this pathway is targeted in vivo in patients with syndrome of inappropriate antidiuresis (SIAD) has been provided. The effects of tolvaptan on the vasopressin-cAMP/PKA signalling cascade were investigated in MDCK cells expressing endogenous V2R and in mouse kidney...
March 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28316143/endothelial-microparticles-act-as-novel-diagnostic-and-therapeutic-biomarkers-of-circulatory-hypoxia-related-diseases-a-literature-review
#2
REVIEW
Fan Deng, Shuang Wang, Liangqing Zhang
Circulatory hypoxia-related diseases (CHRDs), including acute coronary syndromes, stroke and organ transplantation, attract increased attention due to high morbidity and mortality. Mounting evidence shows that hypoxia-induced oxidative stress, coagulation, inflammation and angiogenesis play extremely important roles in the physiological and pathological processes of CHRD-related vascular endothelial injury. Interestingly, hypoxia, even hypoxia-induced oxidative stress, coagulation and inflammation can all induce release of endothelial microparticles (EMPs)...
March 18, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28304151/cardiac-cell-proliferation-is-not-necessary-for-exercise-induced-cardiac-growth-but-required-for-its-protection-against-ischaemia-reperfusion-injury
#3
Yihua Bei, Siyi Fu, Xiangming Chen, Mei Chen, Qiulian Zhou, Pujiao Yu, Jianhua Yao, Hongbao Wang, Lin Che, Jiahong Xu, Junjie Xiao
The adult heart retains a limited ability to regenerate in response to injury. Although exercise can reduce cardiac ischaemia/reperfusion (I/R) injury, the relative contribution of cardiac cell proliferation including newly formed cardiomyocytes remains unclear. A 4-week swimming murine model was utilized to induce cardiac physiological growth. Simultaneously, the antineoplastic agent 5-fluorouracil (5-FU), which acts during the S phase of the cell cycle, was given to mice via intraperitoneal injections. Using EdU and Ki-67 immunolabelling, we showed that exercise-induced cardiac cell proliferation was blunted by 5-FU...
March 17, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28301072/pre-conditions-for-eliminating-mitochondrial-dysfunction-and-maintaining-liver-function-after-hepatic-ischaemia-reperfusion
#4
REVIEW
Chenxia Hu, Lanjuan Li
The liver, the largest organ with multiple synthesis and secretion functions in mammals, consists of hepatocytes and Kupffer, stem, endothelial, stellate and other parenchymal cells. Because of early and extensive contact with the external environment, hepatic ischaemia reperfusion (IR) may result in mitochondrial dysfunction, autophagy and apoptosis of cells and tissues under various pathological conditions. Because the liver requires a high oxygen supply to maintain normal detoxification and synthesis functions, it is extremely susceptible to ischaemia and subsequent reperfusion with blood...
March 16, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28300338/chinese-1-strain-of-toxoplasma-gondii-excreted-secreted-antigens-negatively-modulate-foxp3-via-inhibition-of-the-tgf%C3%A3-rii-smad2-smad3-smad4-pathway
#5
Jinling Chen, Caiqun Huang, Dandan Zhu, Pei Shen, Yinong Duan, Jianxin Wang, Chunzhao Yang, Liting Wu
Toxoplasma gondii is an opportunistic intracellular parasite and is considered an important aetiological factor in the process of abortion, especially as occurs in early gestation. Chinese 1 strain of T. gondii is a dominant genotype prevalent in China. Although it is known that early foetal resorption triggered by RH strain of T. gondii is attributable to immune mechanisms rather than its direct effect in uterus, the underlying mechanism of the abortion caused by Chinese 1 strain remains unclear. This study was designed to investigate the effect of excreted-secreted antigens (ESA) of Chinese 1 strain of T...
March 16, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28296006/intracoronary-allogeneic-cardiosphere-derived-stem-cells-are-safe-for-use-in-dogs-with-dilated-cardiomyopathy
#6
Michael Taylor Hensley, Junnan Tang, Kathleen Woodruff, Teresa Defrancesco, Sandra Tou, Christina M Williams, Mathew Breen, Kathryn Meurs, Bruce Keene, Ke Cheng
Cardiosphere-derived cells (CDCs) have been shown to reduce scar size and increase viable myocardium in human patients with mild/moderate myocardial infarction. Studies in rodent models suggest that CDC therapy may confer therapeutic benefits in patients with non-ischaemic dilated cardiomyopathy (DCM). We sought to determine the safety and efficacy of allogeneic CDC in a large animal (canine) model of spontaneous DCM. Canine CDCs (cCDCs) were grown from a donor dog heart. Similar to human CDCs, cCDCs express CD105 and are slightly positive for c-kit and CD90...
March 15, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28296001/circulating-long-non-coding-rnas-nron-and-mhrt-as-novel-predictive-biomarkers-of-heart-failure
#7
Lina Xuan, Lihua Sun, Ying Zhang, Yuechao Huang, Yan Hou, Qingqi Li, Ying Guo, Bingbing Feng, Lina Cui, Xiaoxue Wang, Zhiguo Wang, Ye Tian, Bo Yu, Shu Wang, Chaoqian Xu, Mingyu Zhang, Zhimin Du, Yanjie Lu, Bao Feng Yang
This study sought to evaluate the potential of circulating long non-coding RNAs (lncRNAs) as biomarkers for heart failure (HF). We measured the circulating levels of 13 individual lncRNAs which are known to be relevant to cardiovascular disease in the plasma samples from 72 HF patients and 60 non-HF control participants using real-time reverse transcription-polymerase chain reaction (real-time RT-PCR) methods. We found that out of the 13 lncRNAs tested, non-coding repressor of NFAT (NRON) and myosin heavy-chain-associated RNA transcripts (MHRT) had significantly higher plasma levels in HF than in non-HF subjects: 3...
March 14, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28294531/tyrphostin-ag556-increases-the-activity-of-large-conductance-ca-2-activated-k-channels-by-inhibiting-epidermal-growth-factor-receptor-tyrosine-kinase
#8
Yan Wang, Hai-Ying Sun, Ying-Guang Liu, Zheng Song, Gang She, Guo-Sheng Xiao, Yan Wang, Gui-Rong Li, Xiu-Ling Deng
The present study was designed to investigate whether large conductance Ca(2+) -activated K(+) (BK) channels were regulated by epidermal growth factor (EGF) receptor (EGFR) tyrosine kinase. BK current and channel tyrosine phosphorylation level were measured in BK-HEK 293 cells expressing both functional α-subunits and the auxiliary β1-subunits using electrophysiology, immunoprecipitation and Western blotting approaches, respectively, and the function of rat cerebral basilar arteries was determined with a wire myography system...
March 14, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28296029/cd38-promotes-angiotensin-ii-induced-cardiac-hypertrophy
#9
Xiao-Hui Guan, Xuan Hong, Ning Zhao, Xiao-Hong Liu, Yun-Fei Xiao, Ting-Tao Chen, Li-Bin Deng, Xiao-Lei Wang, Jian-Bin Wang, Guang-Ju Ji, Mingui Fu, Ke-Yu Deng, Hong-Bo Xin
Cardiac hypertrophy is an early hallmark during the clinical course of heart failure and regulated by various signalling pathways. Recently, we observed that mouse embryonic fibroblasts from CD38 knockout mice were significantly resistant to oxidative stress such as H2 O2 -induced injury and hypoxia/reoxygenation-induced injury. In addition, we also found that CD38 knockout mice protected heart from ischaemia reperfusion injury through activating SIRT1/FOXOs-mediated antioxidative stress pathway. However, the role of CD38 in cardiac hypertrophy is not explored...
March 12, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28296156/pai1-a-novel-pp1-interacting-protein-that-mediates-human-plasma-s-anti-apoptotic-effect-in-endothelial-cells
#10
Hui Yao, Guangchun He, Chao Chen, Shichao Yan, Lu Lu, Liujiang Song, K Vinod Vijayan, Qinglong Li, Li Xiong, Xiongying Miao, Xiyun Deng
Activation of apoptotic signalling in endothelial cells contributes to the detrimental effects of a variety of pathological stimuli. In investigating the molecular events underlying the anti-apoptotic effect of human plasma in cultured human endothelial cells, we unexpectedly uncovered a novel mechanism of apoptosis suppression by human plasma through an interaction between two previously unrelated proteins. Human plasma inhibited hypoxia-serum deprivation-induced apoptosis and stimulated BAD(S136) and Akt(S473) phosphorylation...
March 11, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28296184/long-term-administration-of-pyridostigmine-attenuates-pressure-overload-induced-cardiac-hypertrophy-by-inhibiting-calcineurin-signalling
#11
Yi Lu, Ming Zhao, Jin-Jun Liu, Xi He, Xiao-Jiang Yu, Long-Zhu Liu, Lei Sun, Li-Na Chen, Wei-Jin Zang
Cardiac hypertrophy is associated with autonomic imbalance, characterized by enhanced sympathetic activity and withdrawal of parasympathetic control. Increased parasympathetic function improves ventricular performance. However, whether pyridostigmine, a reversible acetylcholinesterase inhibitor, can offset cardiac hypertrophy induced by pressure overload remains unclear. Hence, this study aimed to determine whether pyridostigmine can ameliorate pressure overload-induced cardiac hypertrophy and identify the underlying mechanisms...
March 10, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28296059/the-pathogenicity-of-t-cell-epitopes-on-human-goodpasture-antigen-and-its-critical-amino-acid-motif
#12
Shui-Yi Hu, Qiu-Hua Gu, Jia Wang, Miao Wang, Xiao-Yu Jia, Zhao Cui, Ming-Hui Zhao
Goodpasture antigen, the non-collagenous domain of α3 chain of type IV collagen [α3(IV)NC1], is the target antigen of anti-glomerular basement membrane (GBM) antibodies. The pathogenicity of T cell epitopes is not elucidated clearly. In this study, we aim to define the nephritogenic T cell epitopes and its critical amino acid residues. Twenty-four overlapping linear peptides were synthesized covering the whole sequence of human α3(IV)NC1. Wistar-Kyoto rats were immunized with linear peptides, and experimental autoimmune glomerulonephritis was evaluated...
March 10, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28276635/3d-culture-increases-pluripotent-gene-expression-in-mesenchymal-stem-cells-through-relaxation-of-cytoskeleton-tension
#13
Ying Zhou, Haiyan Chen, Hong Li, Yaojiong Wu
Three-dimensional (3D) culture has been shown to improve pluripotent gene expression in mesenchymal stem cells (MSCs), but the underlining mechanisms were poorly understood. Here, we found that the relaxation of cytoskeleton tension of MSCs in 3D culture was critically associated with the expressional up-regulation of Nanog. Cultured in spheroids, MSCs showed decreased integrin-based cell-matrix adhesion but increased cadherin-based cell-cell interaction. Different from that in 2D culture, where MSCs exhibited branched and multiple-directed F-actin stress bundles at the cell edge and strengthened stress fibres transversing the cell body, MSCs cultured in spheroids showed compact cell body, relaxed cytoskeleton tension with very thin cortical actin filament outlining the cell, and increased expression of Nanog along with reduced levels of Suv39h1 (H3K9 methyltransferase) and H3K9me3...
March 9, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28276625/nkg2d-ligand-rae1%C3%AE%C2%B5-induces-generation-and-enhances-the-inhibitor-function-of-myeloid-derived-suppressor-cells-in-mice
#14
Li Qian, Yang Liu, Shaoqing Wang, Weijuan Gong, Xiaoqin Jia, Lu Liu, Feng Ye, Jingjuan Ding, Yuwei Xu, Yi Fu, Fang Tian
Expression of surface NKG2D ligands on tumour cells, which activates nature killer (NK) cells and CD8(+) T cells, is crucial in antitumour immunity. Some types of tumours have evolved mechanisms to suppress NKG2D-mediated immune cell activation, such as tumour-derived soluble NKG2D ligands or sustained NKG2D ligands produced by tumours down-regulate the expression of NKG2D on NK cells and CD8(+) T cells. Here, we report that surface NKG2D ligand RAE1ε on tumour cells induces CD11b(+) Gr-1(+) myeloid-derived suppressor cell (MDSC) via NKG2D in vitro and in vivo...
March 9, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28272793/processing-and-secretion-of-guanylate-binding-protein-1-depend-on-inflammatory-caspase-activity
#15
Elisabeth Naschberger, Walter Geißdörfer, Christian Bogdan, Philipp Tripal, Elisabeth Kremmer, Michael Stürzl, Nathalie Britzen-Laurent
Human guanylate binding protein-1 (GBP-1) belongs to the family of large GTPases. The expression of GBP-1 is inducible by inflammatory cytokines, and the protein is involved in inflammatory processes and host defence against cellular pathogens. GBP-1 is the first GTPase which was described to be secreted by eukaryotic cells. Here, we report that precipitation of GBP-1 with GMP-agarose from cell culture supernatants co-purified a 47-kD fragment of GBP-1 (p47-GBP-1) in addition to the 67-kD full-length form. MALDI-TOF sequencing revealed that p47-GBP-1 corresponds to the C-terminal helical part of GBP-1 and lacks most of the globular GTPase domain...
March 8, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28272778/the-activity-of-the-carbamoyl-phosphate-synthase-1-promoter-in-human-liver-derived-cells-is-dependent-on-hepatocyte-nuclear-factor-3-beta
#16
Zhanfei Chen, Nanhong Tang, Xiaoqian Wang, Yanling Chen
Carbamoyl phosphate synthase 1 (CPS1) is the rate-limiting enzyme in the first step of the urea cycle and an indispensable enzyme in the metabolism of human liver. However, CPS1 epigenetic regulation involves promoter analysis and the role of liver-enriched transcription factors (LETFs), which is not fully elucidated. In this work, the promoter region of hCPS1 gene was cloned, and its activity was investigated. An LETF, hepatocyte nuclear factor 3-beta (HNF3β), was found to promote the transcriptional expression of CPS1 in liver-derived cell lines...
March 8, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28272775/cryptotanshinone-inhibition-of-mammalian-target-of-rapamycin-pathway-is-dependent-on-oestrogen-receptor-alpha-in-breast-cancer
#17
Yanhong Pan, Junfeng Shi, Wenting Ni, Yuping Liu, Siliang Wang, Xu Wang, Zhonghong Wei, Aiyun Wang, Wenxing Chen, Yin Lu
Cryptotanshinone (CPT) has been demonstrated to inhibit proliferation and mammalian target of rapamycin (mTOR) pathway in MCF-7 breast cancer cells. However, the same results are unable to be repeated in MDA-MB-231 cells. Given the main difference of oestrogen receptor α (ERα) between two types of breast cancer cells, It is possibly suggested that CPT inhibits mTOR pathway dependent on ERα in breast cancer. CPT could significantly inhibit cell proliferation of ERα-positive cancer cells, whereas ERα-negative cancer cells are insensitive to CPT...
March 8, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28272773/comparative-rna-seq-transcriptome-analyses-reveal-distinct-metabolic-pathways-in-diabetic-nerve-and-kidney-disease
#18
Lucy M Hinder, Meeyoung Park, Amy E Rumora, Junguk Hur, Felix Eichinger, Subramaniam Pennathur, Matthias Kretzler, Frank C Brosius, Eva L Feldman
Treating insulin resistance with pioglitazone normalizes renal function and improves small nerve fibre function and architecture; however, it does not affect large myelinated nerve fibre function in mouse models of type 2 diabetes (T2DM), indicating that pioglitazone affects the body in a tissue-specific manner. To identify distinct molecular pathways regulating diabetic peripheral neuropathy (DPN) and nephropathy (DN), as well those affected by pioglitazone, we assessed DPN and DN gene transcript expression in control and diabetic mice with or without pioglitazone treatment...
March 8, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28272772/tusc3-a-novel-tumour-suppressor-gene-and-its-functional-implications
#19
REVIEW
Xinshuang Yu, Chunjuan Zhai, Yujun Fan, Jiandong Zhang, Ning Liang, Fengjun Liu, Lili Cao, Jia Wang, Juan Du
The tumour suppressor candidate 3 (TUSC3) gene is located on chromosome region 8p22 and encodes the 34 kD TUSC3 protein, which is a subunit of the oligosaccharyl transferase responsible for the N-glycosylation of nascent proteins. Known to be related to autosomal recessive mental retardation for several years, TUSC3 has only recently been identified as a potential tumour suppressor gene. Based on the structure and function of TUSC3, specific mechanisms in various diseases have been investigated. Several studies have demonstrated that TUSC3 is an Mg(2+) -transporter involved in magnesium transport and homeostasis, which is important for learning and memory, embryonic development and testis maturation...
March 8, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28271613/qiliqiangxin-protects-against-anoxic-injury-in-cardiac-microvascular-endothelial-cells-via-nrg-1-erbb-pi3k-akt-mtor-pathway
#20
Jingfeng Wang, Jingmin Zhou, Yanyan Wang, Chunjie Yang, Mingqiang Fu, Jingjing Zhang, Xueting Han, Zhiming Li, Kai Hu, Junbo Ge
Cardiac microvascular endothelial cells (CMECs) are important angiogenic components and are injured rapidly after cardiac ischaemia and anoxia. Cardioprotective effects of Qiliqiangxin (QL), a traditional Chinese medicine, have been displayed recently. This study aims to investigate whether QL could protect CMECs against anoxic injury and to explore related signalling mechanisms. CMECs were successfully cultured from Sprague-Dawley rats and exposed to anoxia for 12 hrs in the absence and presence of QL. Cell migration assay and capillary-like tube formation assay on Matrigel were performed, and cell apoptosis was determined by TUNEL assay and caspase-3 activity...
March 8, 2017: Journal of Cellular and Molecular Medicine
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