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International Journal of Molecular Medicine

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https://www.readbyqxmd.com/read/28791343/breast-cancer-associated-gene-3-interacts-with-rac1-and-augments-nf-%C3%AE%C2%BAb-signaling-in-vitro-but-has-no-effect-on-rankl-induced-bone-resorption-in-vivo
#1
Chen Yao, Kuan-Ping Yu, William Philbrick, Ben-Hua Sun, Christine Simpson, Changqing Zhang, Karl Insogna
Breast cancer-associated gene 3 (BCA3) is a recently identified adaptor protein whose functions are still being defined. BCA3 has been reported to be an important regulator of nuclear factor-κB (NF-κB) signaling. It has also been reported to interact with the small GTPase, Rac1. Consistent with that observation, in the present study, BCA3 was found to interact with nuclear Rac1 in 293 cells and influence NF-κB signaling. Additional experiments revealed that depending on cell type, BCA3 augmented, attenuated or had no effect on NF-κB signaling in vitro...
August 4, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28791341/apocynin-protects-mesangial-cells-from-lipopolysaccharide-induced-inflammation-by-exerting-heme-oxygenase%C3%A2-1-mediated-monocyte-chemoattractant-protein-1-suppression
#2
Nirmal Prasad Bhatt, Jin-Young Park, Hee Jae Lee, Sung-Soo Kim, Yong-Soo Kwon, Wanjoo Chun
Renal failure is observed in the pathological progression of sepsis and septic shock. Renal mesangial cells (RMCs) have been implicated in renal failure as a result of producing mediators, such as monocyte chemoattractant protein-1 (MCP-1) in response to lipopolysaccharide (LPS). Mitogen-activated protein kinases (MAPKs) have been demonstrated to mediate the LPS-induced inflammatory response in RMCs. Although previous studies indicated a promising effect of apocynin in various inflammatory conditions, its antiseptic efficacy in mesangial cells remains to be clearly determined...
August 4, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28791349/ubiquitin-specific-peptidase-4-stabilizes-interferon-regulatory-factor-protein-and-promotes-its-function-to-facilitate-interleukin-4-expression-in-t-helper-type-2-cells
#3
Zhixiang Guo, Peng Xu, Shangqing Ge, Chengxin Zhang, Xiaoyan Zheng, Jinguo Xu, Zhuang Liu, Bin Li, Shenglin Ge
We speculated that ubiquitin specific peptidase 4 (USP4) may deubiquitinate interferon regulatory factor 4 (IRF4) and affect T helper type 2 (Th2) cell function. This study aimed to validate this hypothesis. Here, the interaction between USP4 and IRF4 were analyzed by co-immunoprecipitation assay. The deubiquitin effect of USP4 on IRF4 was analyzed by the Ni-NTA pull down assay. Luciferase reporter gene constructs were used to analyze the effects of USP4, IRF4 and nuclear factor of activated T cell-2 (NFATc2) on the activation of the interleukin-4 (IL-4) promoter...
August 3, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28791348/microrna-124-inhibits-the-proliferation-of-c6-glioma-cells-by-targeting-smad4
#4
Zechuan Zhang, Qiaoyun Gong, Meiying Li, Jinying Xu, Yangyang Zheng, Pengfei Ge, Guangfan Chi
MicroRNA-124 (miR-124) has been shown to be downregulated in glioma; however, its biological functions in glioma are not yet fully understood. The aim of this study was to examine the Smad4‑dependent effects of miR‑124 on C6 glioma cell proliferation. In this study, the level of miR‑124 was found to be enhanced in C6 cells upon transfection with miR‑124 mimics, and the mechanisms of action of miR‑124 in C6 cells were investigated by reverse transcriptase-quantitative polymerase chain reaction, MTT assay, western blot analysis and luciferase reporter assays in vitro...
August 3, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28791345/nova1-mediates-resistance-of-rat-pheochromocytoma-cells-to-hypoxia-induced-apoptosis-via-the-bax-bcl-2-caspase-3-pathway
#5
Hualing Li, Bei Lv, Ling Kong, Jing Xia, Ming Zhu, Lijuan Hu, Danyang Zhen, Yifan Wu, Xiaoqin Jia, Sujuan Zhu, Hengmi Cui
Neuro-oncological ventral antigen 1 (Nova1) is a well known brain-specific splicing factor. Several studies have identified Nova1 as a regulatory protein at the top of a hierarchical network. However, the function of Nova1 during hypoxia remains poorly understood. This study aimed to investigate the protective effect of Nova1 against cell hypoxia and to further explore the Bax/Bcl-2/caspase-3 pathway as a potential mechanism. During hypoxia, the survival rate of pheochromocytoma PC12 cells was gradually decreased and the apoptosis rate was gradually increased, peaking at 48 h of hypoxia...
August 3, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28765900/mir-30a-inhibits-the-biological-function-of-breast-cancer-cells-by-targeting-notch1
#6
He-Da Zhang, Lin-Hong Jiang, Da-Wei Sun, Jian Li, Jin-Hai Tang
miR-30a is situated on chromosome 6q.13 and is produced by an intronic transcriptional unit. However, its role in regulating the apoptosis, invasion and metastasis of breast cancer cells is not yet fully understood. The aim of this study was to research the biological function of miR‑30a and its direct target gene in breast cancer. The biological function of miR‑30a was determined by examining breast cancer cell growth, apoptosis, metastasis and invasion. In addition, Notch1 expression was measured by western blot analysis, and a luciferase reporter vector was constructed to identify the miR‑30a target gene...
July 31, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28765885/anti-angiogenic-properties-of-artemisinin-derivatives-review
#7
Tianshu Wei, Ju Liu
Angiogenesis, the process involving the development of new blood vessels from existing capillaries, is critical for growth and wound healing. However, pathological angiogenesis contributes to the pathogeneses of numerous diseases, including cancer, rheumatoid arthritis, diabetic retinopathy and macular degeneration. Hence, the inhibition of angiogenesis is an effective therapeutic approach for these diseases. Apart from its anti-malarial properties, artemisinin and its derivatives also exhibit potent anti-angiogenic properties...
July 31, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28765881/identification-of-differentially-expressed-micrornas-in-knee-anterior-cruciate-ligament-tissues-surgically-removed-from-patients-with-osteoarthritis
#8
Bin Li, Lunhao Bai, Peng Shen, Yue Sun, Zhizuo Chen, Yu Wen
The degradation of cruciate ligaments is frequently observed in degenerative joint diseases, such as osteo-arthritis (OA). The present study aimed to identify the differentially expressed microRNAs (miRNAs or miRs) in knee anterior cruciate ligament (ACL) tissues derived from patients with OA and in health subjects (non-OA). By using Affymetrix miRNA 4.0 microarrays, a total of 22 miRNAs (including let-7f-5p, miR-26b-5p and miR-146a-5p) were found to be upregulated, while 17 (including miR-18a-3p, miR-138-5p and miR-485-3p) were downregulated in the osteoarthritic ACL tissues (fold change ≥2, P-value <0...
July 31, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28765879/mass-spectrometric-identification-of-dystrophin-the-protein-product-of-the-duchenne-muscular-dystrophy%C3%A2-gene-in-distinct-muscle-surface-membranes
#9
Sandra Murphy, Kay Ohlendieck
Supramolecular membrane complexes of low abundance are difficult to study by routine bioanalytical techniques. The plasmalemmal complex consisting of sarcoglycans, dystroglycans, dystrobrevins and syntrophins, which is closely associated with the membrane cytoskeletal protein dystrophin, represents such a high‑molecular‑mass protein assembly in skeletal muscles. The almost complete loss of the dystrophin isoform Dp427‑M and concomitant reduction in the dystrophin‑associated glycoprotein complex is the underlying cause of the highly progressive neuromuscular disorder named Duchenne muscular dystrophy...
July 27, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28765873/classification-of-cancer-cell-lines-using-matrix-assisted-laser-desorption-ionization-time%C3%A2-of%C3%A2-flight-mass-spectrometry-and-statistical-analysis
#10
Vlad Serafim, Ajit Shah, Maria Puiu, Nicoleta Andreescu, Dorina Coricovac, Alexander Nosyrev, Demetrios A Spandidos, Aristides M Tsatsakis, Cristina Dehelean, Iulia Pinzaru
Over the past decade, matrix-assisted laser desorption/ionization time‑of‑flight mass spectrometry (MALDI‑TOF MS) has been established as a valuable platform for microbial identification, and it is also frequently applied in biology and clinical studies to identify new markers expressed in pathological conditions. The aim of the present study was to assess the potential of using this approach for the classification of cancer cell lines as a quantifiable method for the proteomic profiling of cellular organelles...
July 27, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28765878/grifola-frondosa-polysaccharides-induce-breast-cancer-cell-apoptosis-via-the-mitochondrial-dependent-apoptotic-pathway
#11
Yizhi Zhang, Dejun Sun, Qingjin Meng, Wanxu Guo, Qiuhui Chen, Ying Zhang
Grifola frondosa, a type of food and medical fungus, has been shown to exhibit various pharmacological activities, including anticancer effects. As the most typical cancer diagnosed among female patients, breast cancer remains a huge concern threatening human health globally. In the present study, the anti-breast cancer effects of Grifola frondosa polysaccharides (GFPs) and the underlying mechanisms were investigated in MCF-7 and MDA-MB-231 cells, as well as in nude mice bearing MCF-7 tumor xenografts. GFPs exerted cytotoxic effects on the cells, as indicated by a decrease in cell viability, and an increase in the apoptototic rate, lactate dehydrogenase release and reactive oxygen species accumulation, inducing mitochondrial dysfunction...
July 26, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28731142/nlrc3-promotes-host-resistance-against-pseudomonas-aeruginosa-induced-keratitis-by-promoting-the-degradation-of-irak1
#12
Litao Guo, Qingzhu Kong, Zhijun Dong, Weili Dong, Xiaoxiao Fu, Leqi Su, Xiaobo Tan
Pseudomonas aeruginosa (PA)-induced keratitis is one of the most common and destructive bacterial diseases. The pathogenesis of PA infections is closely associated with excessive inflammatory responses. Nucleotide oligomerization domain (NOD)-like receptor (NLR) family with caspase activation and recruitment domain (CARD) containing 3 (NLRC3) protein has been implicated as a negative regulator of inflammation and antiviral response, but the role of NLRC3 in PA-induced keratitis has not been described...
July 20, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28731133/irrelevance-of-anti%C3%A2-nachr-cytoplasmic-loop-antibody-in-the-degree-of-myasthenia-gravis
#13
Ye Lin, Chen Song, Jiang Xu, Yongxiang Yang, Hang Qin, Cong Zhao, Jiaji Lin, Rui Liu, Zhuyi Li
Anti‑nicotinic acetylcholine receptor (nAChR) antibody in myasthenia gravis (MG) usually refers to that against the extracellular domain (ECD) of nAChR. However, growing evidence has indicated that there also exists the nAChR antibody against the nAChR cytoplasmic loop (CL) in patients with MG. Some studies have demonstrated that the anti‑CL antibody may play a protective role in animal models of experimental autoimmune MG. However, to date, limited or no information is available as to whether anti‑CL antibody plays a beneficial role in patients with MG...
July 19, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28731171/protective-role-of-pollen-typhae-total-flavone-against-the-palmitic-acid-induced-impairment-of-glucose-stimulated-insulin-secretion-involving-gpr40-signaling-in-ins-1-cells
#14
Xiao-Tao Feng, Hui-Ming Duan, Shuang-Lei Li
Prolonged elevated levels of free fatty acids (FFAs) contribute to the impairment of insulin secretion function of pancreatic β cells, a hallmark of type 2 diabetes, which is partly attributed to the dysfunction of G-protein-coupled receptor 40 (GPR40) signaling. Pollen Typhae total flavone (PTF), an extract from a Chinese herbal medicine named Pollen Typhae, has been reported to effectively treat type 2 diabetes, but the underlying mechanisms remain to be fully elucidated. In the present study, palmitic acid (PA), a saturated fatty acid, severely impaired glucose-stimulated insulin secretion (GSIS) in a time-dependent manner in INS-1 cells, and PTF treatment prevented the impairment in a dose-dependent manner...
July 18, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28731146/aberrant-expression-of-rsk4-in-breast-cancer-and-its-role-in-the-regulation-of-tumorigenicity
#15
Yi Jiang, Xinqing Ye, Yinan Ji, Xiao Zhou, Huawei Yang, Wei Wei, Qiuyun Li
Breast cancer is the most frequently diagnosed cancer in both more and less economically developed countries and remains the leading cause of cancer-related death in women worldwide. In this study, to explore the expression and pathological role of RSK4 in breast cancer progression, we demonstrated that RSK4 expression was significantly decreased in breast cancer cells and tissues, and the overexpression of RSK4 in MDA‑MB‑231 cells inhibited cell migration and invasion. In a mouse model experiment, overexpression of RSK4 in mice further confirmed its critical role in regulating breast cancer tumorigenicity...
July 17, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28713979/roles-of-electro-acupuncture-in-glucose-metabolism-as-assessed-by-18f-fdg-pet-imaging-and-ampk%C3%AE-phosphorylation-in-rats-with-ischemic-stroke
#16
Jingsong Wu, Bingbing Lin, Weilin Liu, Jia Huang, Guanhao Shang, Yunjiao Lin, Lulu Wang, Lidian Chen, Jing Tao
Targeted energy metabolism balance contributes to neural survival during ischemic stroke. Herein, we tested the hypothesis that electro‑acupuncture (EA) can enhance cerebral glucose metabolism assessed by 18F‑fluorodeoxyglucose/positron emission tomography (18F‑FDG/PET) imaging to prevent propagation of tissue damage and improve neurological outcome in rats subjected to ischemia and reperfusion injury. Rats underwent middle cerebral artery occlusion (MCAO) and received EA treatment at the LI11 and ST36 acupoints or non‑acupoint treatment once a day for 7 days...
July 6, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28713947/microrna-582-promotes-tumorigenesis-by-targeting-phosphatase-and-tensin-homologue-in-colorectal-cancer
#17
Bin Song, Yanbin Long, Dong Liu, Wen Zhang, Chang Liu
A number of studies have implicated that a class of non‑coding RNAs named microRNAs (miRNAs or miRs) is associated with tumorigenesis and have identified miRNAs as promising targets for pharmaceutical intervention. Recently, the deregulated expression of miR‑582 in tumor cells has been reported. However, the exact function of miR‑582 in colorectal cancer (CRC) remains largely unknown. In thi study, we demonstrate that miR‑582 is extensively upregulated in CRC tissues and cell lines. The overexpression of miR‑582 significantly enhanced the proliferation and migration ability of the CRC cells...
July 6, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28677806/%C3%AE-2-antiplasmin-modulates-bone-formation-by-negatively-regulating-osteoblast-differentiation-and-function
#18
Yosuke Kanno, Akira Ishisaki, Hiromi Kuretake, Chihiro Maruyama, Ayaka Matsuda, Osamu Matsuo
α2-antiplasmin (α2AP) is known to be a physiological inhibitor of plasmin. Previously, we showed that α2AP displays various functions, such as promotion of extracellular matrix production, cell growth, and cell differentiation that are not promoted by its function as a plasmin inhibitor. We herein investigated the role of α2AP in bone formation by examining calcein incorporation after its injection in α2AP-deficient mice. We found that α2AP deficiency enhanced the bone formation rate in mice. We also found that the osteocalcin expression and alkaline phosphatase activity were elevated in the femur and serum of the α2AP-deficient mice...
July 5, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28677741/mulberry-granules-protect-against-diabetic-cardiomyopathy-through-the-ampk-nrf2-pathway
#19
Yang Liu, Yan-Bo Zhao, Si-Wang Wang, Yu Zhou, Zhi-Shu Tang, Feng Li
Mulberry granules (MLD) is a traditional Chinese medicine prescription that has been used in the treatment of diabetes for many years. Recently, we found that MLD protected the heart from diabetes-associated cardiomyopathy when it was used to treat diabetes. However, the beneficial effects and possible mechanism remain unknown. To elucidate these effects, an experimental myocardial ischemia/reperfusion (MI/R) injury model in diabetes rats was used in this study. Male C57BL/6 mice were injected with streptozotocin to induce diabetes...
July 3, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28677752/inhibition-of-pre-b-cell-colony-enhancing-factor-attenuates-inflammation-induced-by-hyperoxia-in-ea-hy926-cells
#20
Jia Yu He, Huan Jin Cui, Li Jun Tang, Jinwen Chen, Wei Min Huang
The aim of this study was to investigate the role of pre-B cell colony-enhancing factor (PBEF) in the pathogenesis of bronchopulmonary dysplasia (BPD) using an established cell model of BPD. For this purpose, EA.hy926 cell cultures were divided into 4 groups as follows: the air group as the blank control, the hyperoxia group, the hyperoxia plus PBEF siRNA group and the hyperoxia plus scramble siRNA group. Cell viability and the generation of reactive oxygen species (ROS) were determined using respective kits...
June 29, 2017: International Journal of Molecular Medicine
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