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Journal of Cellular and Molecular Medicine

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https://www.readbyqxmd.com/read/28444875/methylglyoxal-induced-apoptosis-is-dependent-on-the-suppression-of-c-flipl-expression-via-down-regulation-of-p65-in-endothelial-cells
#1
Ji Hoon Jang, Eun-Ae Kim, Hye-Jin Park, Eon-Gi Sung, In-Hwan Song, Joo-Young Kim, Chang-Hoon Woo, Kyung-Oh Doh, Kook Hyun Kim, Tae-Jin Lee
Methylglyoxal (MGO) is a reactive dicarbonyl metabolite of glucose, and its plasma levels are elevated in patients with diabetes. Studies have shown that MGO combines with the amino and sulphhydryl groups of proteins to form stable advanced glycation end products (AGEs), which are associated with vascular endothelial cell (EC) injury and may contribute to the progression of atherosclerosis. In this study, MGO induced apoptosis in a dose-dependent manner in HUVECs, which was attenuated by pre-treatment with z-VAD, a pan caspase inhibitor...
April 26, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28444871/dihydroberberine-exhibits-synergistic-effects-with-sunitinib-on-nsclc-nci-h460-cells-by-repressing-map-kinase-pathways-and-inflammatory-mediators
#2
Bingling Dai, Yujiao Ma, Wenjie Wang, Yingzhuan Zhan, Dongdong Zhang, Rui Liu, Yanmin Zhang
Highly effective and attenuated dose schedules are good regimens for drug research and development. Combination chemotherapy is a good strategy in cancer therapy. We evaluated the antitumour effects of dihydroberberine combined with sunitinib (DCS) on the human non-small cell lung cancer cell lines (NSCLC), A549, NCI-H460, and NCI-H1299 in vitro and in vivo. DCS showed synergic effects on NCI-H460 cell proliferation, colony formation and transplantable tumour growth, which suggested dihydroberberine increases the sensitivity of lung carcinoma to sunitinib...
April 26, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28444861/lncrna-malat1-is-dysregulated-in-diabetic-nephropathy-and-involved-in-high-glucose-induced-podocyte-injury-via-its-interplay-with-%C3%AE-catenin
#3
Mengsi Hu, Rong Wang, Xiaobing Li, Minghua Fan, Jiangong Lin, Junhui Zhen, Liqun Chen, Zhimei Lv
Metastasis associated lung adenocarcinoma transcript 1(MALAT1) is a long non-coding RNA, broadly expressed in mammalian tissues including kidney and up-regulated in a variety of cancer cells. To date, its functions in podocytes are largely unknown. β-catenin is a key mediator in the canonical and non-canonical Wnt signalling pathway; its aberrant expression promotes podocyte malfunction and albuminuria, and contributes to kidney fibrosis. In this study, we found that MALAT1 levels were increased in kidney cortices from C57BL/6 mice with streptozocin (STZ)-induced diabetic nephropathy, and dynamically regulated in cultured mouse podocytes stimulated with high glucose, which showed a trend from rise to decline...
April 26, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28444839/age-dependent-alterations-in-osteoblast-and-osteoclast-activity-in-human-cancellous-bone
#4
Mustafa Becerikli, Henriette Jaurich, Jessica Schira, Matthias Schulte, Carmen Döbele, Christoph Wallner, Stephanie Abraham, Johannes M Wagner, Mehran Dadras, Ulrich Kneser, Marcus Lehnhardt, Björn Behr
It is assumed that the activity of osteoblasts and osteoclasts is decreased in bone tissue of aged individuals. However, detailed investigation of the molecular signature of human bone from young compared to aged individuals confirming this assumption is lacking. In this study, quantitative expression analysis of genes related to osteogenesis and osteoclastogenesis of human cancellous bone derived from the distal radius of young and aged individuals was performed. Furthermore, we additionally performed immunohistochemical stainings...
April 26, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28429571/melatonin-antagonizes-interleukin-18-mediated-inhibition-on-neural-stem-cell-proliferation-and-differentiation
#5
Zheng Li, Xingye Li, Matthew T V Chan, William Ka Kei Wu, DunXian Tan, Jianxiong Shen
Neural stem cells (NSCs) are self-renewing, pluripotent and undifferentiated cells which have the potential to differentiate into neurons, oligodendrocytes and astrocytes. NSC therapy for tissue regeneration, thus, gains popularity. However, the low survivals rate of the transplanted cell impedes its utilities. In this study, we tested whether melatonin, a potent antioxidant, could promote the NSC proliferation and neuronal differentiation, especially, in the presence of the pro-inflammatory cytokine interleukin-18 (IL-18)...
April 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28429508/immunophenotyping-and-activation-status-of-maternal-peripheral-blood-leukocytes-during-pregnancy-and-labour-both-term-and-preterm
#6
Jianhong Zhang, Oksana Shynlova, Sally Sabra, Annie Bang, Laurent Briollais, Stephen J Lye
The onset of labour in rodents and in humans is associated with physiological inflammation which is manifested by infiltration of activated maternal peripheral leukocytes (mPLs) into uterine tissues. Here, we used flow cytometry to immunophenotype mPLs throughout gestation and labour, both term and preterm. Peripheral blood was collected from non-pregnant women and pregnant women in the 1st, 2nd and 3rd trimesters. Samples were also collected from women in active labour at term (TL) or preterm (PTL) and compared with women term not-in-labour (TNIL) and preterm not-in-labour (PTNIL)...
April 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28429395/shrna-knock-down-of-cxcr7-inhibits-tumour-invasion-and-metastasis-in-hepatocellular-carcinoma-after-transcatheter-arterial-chemoembolization
#7
Zhong-Wei Zhao, Xiao-Xi Fan, Jing-Jing Song, Min Xu, Min-Jiang Chen, Jian-Fei Tu, Fa-Zong Wu, Deng-Ke Zhang, Lu Liu, Li Chen, Xi-Hui Ying, Jian-Song Ji
To investigate the effects of lentiviral vector-mediated shRNA suppressing CXCR7 on tumour invasion and metastasis in hepatocellular carcinoma (HCC) after transcatheter arterial chemoembolization (TACE). HCCLM3 cell lines were cultured and assigned into the CXCR7-shRNA, negative control (NC) and blank groups. The qRT-PCR and Western blotting were applied to detect the mRNA and protein expressions of CXCR7, CXCR4 and MMP-2 in HCCLM3 cells. Cell proliferation and invasion were evaluated by MTT and Transwell assays...
April 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28425222/class-iii-antiarrhythmic-drugs-amiodarone-and-dronedarone-impair-kir-2-1-backward-trafficking
#8
Yuan Ji, Hiroki Takanari, Muge Qile, Lukas Nalos, Marien J C Houtman, Fee L Romunde, Raimond Heukers, Paul M P van Bergen En Henegouwen, Marc A Vos, Marcel A G van der Heyden
Drug-induced ion channel trafficking disturbance can cause cardiac arrhythmias. The subcellular level at which drugs interfere in trafficking pathways is largely unknown. KIR 2.1 inward rectifier channels, largely responsible for the cardiac inward rectifier current (IK1 ), are degraded in lysosomes. Amiodarone and dronedarone are class III antiarrhythmics. Chronic use of amiodarone, and to a lesser extent dronedarone, causes serious adverse effects to several organs and tissue types, including the heart. Both drugs have been described to interfere in the late-endosome/lysosome system...
April 19, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28411377/mir-495-sensitizes-mdr-cancer-cells-to-the-combination-of-doxorubicin-and-taxol-by-inhibiting-mdr1-expression
#9
Zhenyou Zou, Ruyi Zou, Dan Zong, Yonghong Shi, Jinyao Chen, Jie Huang, Jiahui Zhu, Liguan Chen, Xiaoyan Bao, Yuan Liu, Weihao Liu, Wenhui Huang, Jingsang Hu, Zhi Chen, Xiaojie Lao, Chaoqun Chen, Xiaoli Huang, Yao Lu, Xueyin Ni, Daoquan Fang, Dengqiang Wu, Shuangshuang Lu, Mingzhu Jiang, Chenyang Qiu, Yuya Wu, Qisha Qiu, Yanyuan Dong, Yangyang Su, Chenmin Zhao, Zhihe Zhong, Jing Cai, Yong Liang
MDR1 is highly expressed in MDR A2780DX5 ovarian cancer cells, MDR SGC7901R gastric cancer cells and recurrent tumours. It pumps cytoplasmic agents out of cells, leading to decreased drug accumulation in cells and making cancer cells susceptible to multidrug resistance. Here, we identified that miR-495 was predicted to target ABCB1, which encodes protein MDR1. To reduce the drug efflux and reverse MDR in cancer cells, we overexpressed a miR-495 mimic in SGC7901R and A2780DX cells and in transplanted MDR ovarian tumours in vivo...
April 14, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28409910/pathogenicity-of-two-coq7-mutations-and-responses-to-2-4-dihydroxybenzoate-bypass-treatment
#10
Ying Wang, Christopher Smith, Jillian S Parboosingh, Aneal Khan, Micheil Innes, Siegfried Hekimi
Primary ubiquinone (co-enzyme Q) deficiency results in a wide range of clinical features due to mitochondrial dysfunction. Here, we analyse and characterize two mutations in the ubiquinone biosynthetic gene COQ7. One mutation from the only previously identified patient (V141E), and one (L111P) from a 6-year-old girl who presents with spasticity and bilateral sensorineural hearing loss. We used patient fibroblast cell lines and a heterologous expression system to show that both mutations lead to loss of protein stability and decreased levels of ubiquinone that correlate with the severity of mitochondrial dysfunction...
April 13, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28402080/application-of-ischemic-postconditioning-s-algorithms-in-tissues-protection-response-to-methodological-gaps-in-preclinical-and-clinical-studies
#11
Saeid Feyzizadeh, Reza Badalzadeh
Ischaemic postconditioning (IPostC) was introduced for the first time by Zhao et al. as a feasible method for reduction of myocardial ischaemia-reperfusion (IR) injury. The cardioprotection by this protocol has been extensively evaluated in various species. Then, further research revealed that IPostC is a safe and convenient approach in limiting IR injury of non-myocardial tissues such as lung, liver, kidney, intestine, skeletal muscle, brain and spinal cord. IPostC has been conducted with different algorithms, resulting in diverse effects...
April 12, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28402065/identification-of-a-synergistic-interaction-between-endothelial-cells-and-retinal-pigment-epithelium
#12
Carrie Spencer, Stephanie Abend, Kevin J McHugh, Magali Saint-Geniez
The retinal pigment epithelium located between the neurosensory retina and the choroidal vasculature is critical for the function and maintenance of both the photoreceptors and underlying capillary endothelium. While the trophic role of retinal pigment epithelium on choroidal endothelial cells is well recognized, the existence of a reciprocal regulatory function of endothelial cells on retinal pigment epithelium cells remained to be fully characterized. Using a physiological long-term co-culture system, we determined the effect of retinal pigment epithelium-endothelial cell heterotypic interactions on cell survival, behaviour and matrix deposition...
April 12, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28402037/atrial-electrophysiological-and-molecular-remodelling-induced-by-obstructive-sleep-apnoea
#13
Devika Channaveerappa, Jacob C Lux, Kelly L Wormwood, Timothy A Heintz, Meredith McLerie, Jacqueline A Treat, Hannah King, Donia Alnasser, Robert J Goodrow, Glenn Ballard, Robert Decker, Costel C Darie, Brian K Panama
Obstructive sleep apnoea (OSA) affects 9-24% of the adult population. OSA is associated with atrial disease, including atrial enlargement, fibrosis and arrhythmias. Despite the link between OSA and cardiac disease, the molecular changes in the heart which occur with OSA remain elusive. To study OSA-induced cardiac changes, we utilized a recently developed rat model which closely recapitulates the characteristics of OSA. Male Sprague Dawley rats, aged 50-70 days, received surgically implanted tracheal balloons which were inflated to cause transient airway obstructions...
April 12, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28402030/cyclic-peptide-crretawac-attenuates-fibronectin-induced-cytokine-secretion-of-human-airway-smooth-muscle-cells-by-inhibiting-fak-and-p38-mapk
#14
Mengdi Chu, Jiani Ji, Wenhao Cao, Huojun Zhang, Dan Meng, Bangruan Xie, Shuyun Xu
α5β1 integrin is highly expressed in airway smooth muscle cells and mediate the adhesion of airway smooth muscle cells to fibronectin to regulate airway remodelling in asthma. This study aimed to investigate the effects of synthetic cyclic peptide *CRRETAWAC* on fibronectin-induced cytokine secretion of airway smooth muscle cells and the underlying mechanism. Human airway smooth muscle cells were isolated and treated with fibronectin, IL-13, *CRRETAWAC* peptide, α5β1 integrin-blocking antibody, FAK inhibitor or p38 MAPK inhibitor...
April 12, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28402019/epigallocatechin-gallate-inhibits-streptococcus-pneumoniae-virulence-by-simultaneously-targeting-pneumolysin-and-sortase%C3%A2-a
#15
Meng Song, Zihao Teng, Meng Li, Xiaodi Niu, Jianfeng Wang, Xuming Deng
Streptococcus pneumoniae (pneumococcus), the causative agent of several human diseases, possesses numerous virulence factors associated with pneumococcal infection and pathogenesis. Pneumolysin (PLY), an important virulence factor, is a member of the cholesterol-dependent cytolysin family and has cytolytic activity. Sortase A (SrtA), another crucial pneumococcal virulence determinate, contributes greatly to the anchoring of many virulence-associated surface proteins to the cell wall. In this study, epigallocatechin gallate (EGCG), a natural compound with little known antipneumococcal activity, was shown to directly inhibit PLY-mediated haemolysis and cytolysis by blocking the oligomerization of PLY and simultaneously reduce the peptidase activity of SrtA...
April 12, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28402018/phloretin-attenuates-hyperuricemia-induced-endothelial-dysfunction-through-co-inhibiting-inflammation-and-glut9-mediated-uric-acid-uptake
#16
Shuyun Liu, Yujia Yuan, Yijie Zhou, Meng Zhao, Younan Chen, Jingqiu Cheng, Jingping Liu, Yanrong Lu
Hyperuricemia is an important risk factor for cardiovascular and renal diseases. Phloretin had shown antioxidant and anti-inflammatory properties, but its role in endothelial injury is rarely reported. In this study, we aimed to investigate the protective effect of phloretin on UA-induced injury in human umbilical vein endothelial cells. The effects of UA and phloretin on cell viability, inflammation, THP-1 monocyte adhesion, endothelial cell tube formation, GLUT9 expression and UA uptake in human umbilical vein endothelial cells were evaluated...
April 12, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28401647/mg53-anchored-by-dysferlin-to-cell-membrane-reduces-hepatocyte-apoptosis-which-induced-by-ischaemia-reperfusion-injury-in%C3%A2-vivo-and-in%C3%A2-vitro
#17
Weifeng Yao, Haobo Li, Xue Han, Chaojin Chen, Yihan Zhang, Wai Lydia Tai, Zhengyuan Xia, Ziqing Hei
Hepatic ischaemia/reperfusion (HIR) induces severe damage on hepatocyte cell membrane, which leads to hepatocyte death and the subsequent HIR injury. In this study, we investigated the role and the mechanism of mitsugumin-53 (MG53), a novel cell membrane repair protein, in protecting the liver against HIR injury. Rats were subjected to sham operation or 70% warm HIR with or without recombined MG53 (rhMG53), caudal vein-injected 2 hrs before inducing HIR. In vitro, cultured hepatocyte AML12 cells were subjected to hypoxia/reoxygenation (H/R) in the presence of rhMG53 and/or dysferlin gene shRNAs or adenovirus transfection...
April 12, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28401653/selective-blockade-of-b7-h3-enhances-antitumour-immune-activity-by-reducing-immature-myeloid-cells-in-head-and-neck-squamous-cell-carcinoma
#18
Liang Mao, Teng-Fei Fan, Lei Wu, Guang-Tao Yu, Wei-Wei Deng, Lei Chen, Lin-Lin Bu, Si-Rui Ma, Bing Liu, Yansong Bian, Ashok B Kulkarni, Wen-Feng Zhang, Zhi-Jun Sun
Immature myeloid cells including myeloid-derived suppressor cells (MDSCs) and tumour-associated macrophages (TAMs) promote tumour growth and metastasis by facilitating tumour transformation and angiogenesis, as well as by suppressing antitumour effector immune responses. Therefore, strategies designed to reduce MDSCs and TAMs accumulation and their activities are potentially valuable therapeutic goals. In this study, we show that negative immune checkpoint molecule B7-H3 is significantly overexpressed in human head and neck squamous cell carcinoma (HNSCC) specimen as compared with normal oral mucosa...
April 11, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28393453/novel-mechanism-of-mirna-365-regulated-trophoblast-apoptosis-in-recurrent-miscarriage
#19
Wei Zhao, Wei-Wei Shen, Xiao-Mei Cao, Wen-Yan Ding, Lin-Ping Yan, Ling-Juan Gao, Xiu-Ling Li, Tian-Ying Zhong
Clinical pregnancies increasingly end in recurrent miscarriage (RM) during the first trimester, with genetic factors shouldering the main responsibility. MicroRNAs (miRNAs) regulate gene expression in a wide array of important biological processes. We examined the potential role of dysregulated miRNAs in RM pathogenesis and trophoblast development as an approach to elucidate the molecular mechanism behind RM. miRNA profiles from clinical specimens of RM and induced abortion (IA) were compared, and several miRNAs were found to be aberrantly expressed in RM samples...
April 10, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28387464/a-novel-ph-controlled-hydrogen-sulfide-donor-protects-gastric-mucosa-from-aspirin-induced-injury
#20
Chun-Tao Yang, Zhen-Zhen Lai, Ze-Hang Zheng, Jian-Ming Kang, Ming Xian, Rui-Yu Wang, Kun Shi, Fu-Hui Meng, Xiang Li, Li Chen, Hui Zhang
Hydrogen sulphide (H2 S) serves as a vital gastric mucosal defence under acid condition. Non-steroidal anti-inflammatory drugs (NSAIDs) are among widely prescribed medications with effects of antipyresis, analgesia and anti-inflammation. However, their inappropriate use causes gastric lesions and endogenous H2 S deficiency. In this work, we reported the roles of a novel pH-controlled H2 S donor (JK-1) in NSAID-related gastric lesions. We found that JK-1 could release H2 S under mild acidic pH and increase solution pH value...
April 7, 2017: Journal of Cellular and Molecular Medicine
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