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Cell Biology International

Yoshitaka Hosokawa, Ikuko Hosokawa, Kazumi Ozaki, Takashi Matsuo
Transforming growth factor (TGF)-β1 is a multifunctional cytokine, which can control certain functions of various kinds of cells. However, it is unclear whether TGF-β1 affects T-cell migration in periodontal lesions. The aim of this study was to examine the effects of TGF-β1 on the production of C-C chemokine ligand (CCL)11, which is a T-helper 2-type chemokine, in human periodontal ligament cells (HPDLC). Interleukin (IL)-4 induced CCL11 production, but TGF-β1 did not, in HPDLC. However, TGF-β1 enhanced CCL11 production in IL-4-stimulated HPDLC...
July 11, 2018: Cell Biology International
Hai-Jun Liu, Ru-Ming Liu
We investigated the dynamic changes in chromatin and microtubules at the first cell cycle in goat somatic cell nuclear transfer (SCNT)-derived and in vitro fertilization (IVF) derived embryos. Stage-dependent and characteristic changes to chromatin and microtubules occurred in SCNT-derived embryos at different times after activation. About half donor nuclei underwent premature chromosome condensation (PCC) at 1 h post activation, and furtherly reached telophase at 2 h after activation. However, we discovered that the separated chromosomes reaggregated, not keeping two independent nuclei; and formed one pronucleus at 2...
July 11, 2018: Cell Biology International
Lin-Yan Huang, Yu-Jie Li, Peng-Peng Li, Hong-Chun Li, Ping Ma
Our previous study found that ClC-3 chloride channel functioned differently in the vascular and intestinal inflammation, the loss of ClC-3 reduced vascular inflammation but exacerbated intestinal inflammation. To furtherly clarify the role of ClC-3 chloride channels in systemic inflammation, we used LPS-induced endotoxemia model to investigate the response of wild-type and ClC-3 knockout mice to systemic inflammation. The results showed that in the LPS-induced endotoxemia model, the mortality of mice with ClC-3 deletion was significantly higher than that of wild-type mice...
July 4, 2018: Cell Biology International
Zhi-Gang Cai, Hai-Bo Wu, Xiao-Ping Xu, Wen Li
Epithelial mesenchymal transformation (EMT) plays fundamental roles in tumor metastasis. MiRNAs function as powerful regulators of EMT. The function and mechanism of miRNAs in EMT of lung cancers remains to be elucidated. Here, we explored the roles and mechanisms of miR-26a in EMT. A cellular EMT model was firstly established by TGFβ incubation with A549 cells. Compared with control, the expression of miR-26a was down-regulated by 60% in EMT model. Down-regulation of miR-26a was further revealed to increase the expression of mesenchymal markers (N-cadherin, Vimentin, a-Sma and Twist1) and decrease epithelial marker (E-cadherin)...
July 4, 2018: Cell Biology International
Yang Gu, Man Luo, Yong Li, Zhongping Su, Yaqing Wang, Xiru Chen, Siqi Zhang, Wei Sun, Xiangqing Kong
B-cell lymphoma 6 (Bcl6) functions as a sequence-specific transcriptional repressor and negative regulator of many signaling proteins. The effects of Bcl6 on cardiomyocyte injury are not clear. This study was designed to determine whether Bcl6 affects hypoxia-induced cardiomyocyte injury and, if so, to identify the underlying mechanism. To meet this aim, cardiomyocytes were exposed to hypoxia and Bcl6 siRNA was used to silence Bcl6 in cardiomyocytes. Bcl6 knockdown under physiological conditions caused increased oxidative stress, apoptosis, and expression of pro-inflammatory cytokines...
July 4, 2018: Cell Biology International
Tieqiong Zhang, Chunlei Zheng, Kezuo Hou, Jinyao Wang, Ye Zhang, Yibo Fan, Huan Zhao, Xiujian Qu, Yunpeng Liu, Jian Kang, Xuejun Hu, Xiaofang Che
Although epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) could greatly improve the prognosis of NSCLC patients harboring activating EGFR mutations, drug resistance still remains a major obstacle to successful treatment. Our previous study found that the EGFR-TKI icotinib could upregulate the expression of Casitas-B-lineage lymphoma protein-B (Cbl-b), an E3 ubiquitin ligase. In the present study, we aimed to clarify the potential role of Cbl-b in the resistance to icotinib, and the underlying mechanisms using EGFR-mutant cell lines...
July 4, 2018: Cell Biology International
Chun-Hui Zheng, Xiao-Mei Chen, Fang-Biao Zhang, Chun Zhao, Shao-Song Tu
CXCR4 has been shown to play a key role in the metastasis of non-small cell lung cancer (NSCLC). And CXCR may be associated with the Hippo - Yes kinase-associated protein (YAP) pathway, thus involving in the occurrence and progression of NSCLC. This study aims to investigate the effect of CXCR4 inhibition on epithelial-mesenchymal transition (EMT), invasion and migration of NSCLC cells via the Hippo-YAP pathway. QRT-PCR and Western blot were employed to detect CXCR4 expression in NSCLC cell lines. A549 and H1299 cells were treated with WZ811 (0, 10, 30, and 50µM), and A549 cells were also divided into the Control, WZ811, YAP siRNA, and WZ811 + YAP groups...
July 4, 2018: Cell Biology International
Mengyao Sun, Xiaona Ma, Chen Tu, Xiaopeng Wang, Jianqiang Qu, Shuang Wang, Shengxiang Xiao
MicroRNAs (miRNAs) participate in the development and progression of melanoma. However, while dysregulation of microRNA-378 (miR-378) has been seen in various cancer types, its clinical importance and function in melanoma is poorly elucidated. In this work, miR-378 expression in melanoma and in adjacent non-cancerous tissue was evaluated with quantitative real time polymerase chain reaction (qRT-PCR). A series of assays (wound healing, Transwell and nude mouse subcutaneous tumor model) were used to investigate the implications of abnormal miR-378 regulation on melanoma cell migration and invasion in vitro, and on tumorigenicity in vivo...
July 4, 2018: Cell Biology International
Xiaofei Li, Shuang Wu, Weiwei Ye, Juncai Tu, Lianqing Lou
Liver fibrosis is a major cause of morbidity and mortality worldwide, and the outcome of various chronic liver diseases. Recent studies suggest that aberrant expression of miR-34 is involved in the progression of various liver diseases including hepatocellular carcinoma (HCC). However, it is still poorly understood whether miR-34 mediates the pathogenesis of liver fibrosis. Here, we found that the expression of microRNA-34a-5p (miR-34a-5p) was significantly decreased in patients with hepatitis B virus (HBV)-activated liver fibrosis and HCC, as well as in CC14 (Carbon tetrachloride Tetrachloromethane) induced liver fibrosis model mice...
June 29, 2018: Cell Biology International
Ling Xu, Tianshu Guo, Xiujuan Qu, Xuejun Hu, Ye Zhang, Xiaofang Che, Huicong Song, Jing Gong, Rui Ma, Ce Li, Yibo Fan, Yanju Ma, Kezuo Hou, Peihong Wu, Hang Dong, Yunpeng Liu
β-Elemene, an anti-cancer drug extracted from traditional Chinese medicinal herb, showed anti-tumor effects on gastric cancer cells. Our previous studies reported gastric cancer cells are insensitive to TRAIL. However, whether β-elemene could enhance anti-cancer effects of TRAIL on gastric cancer cells is unknown. In our present study, β-elemene prevented gastric cancer cell viability in dose-dependent manner, and when combined with TRAIL, obviously inhibited proliferation and promoted apoptosis in gastric cancer cells...
June 29, 2018: Cell Biology International
Bo Zhou, Wenwen Yuan, Xinping Li
The regulatory roles of lncRNAs in the development of alcoholic hepatic fibrosis (AHF) have not been revealed. Here, we found lncRNA Gm5091 was being downregulated in mouse hepatic stellate cells (HSCs) during AHF. Then, Gm5091 was respectively overexpressed and knocked down in alcohol-treated primary HSCs. Our results showed that Gm5091 negatively regulated cell migration, ROS content, IL-1β secretion, and expression of Collagen I and markers of HSC activation including α-SMA and Desmin. Furthermore, bioinformatics analysis showed that Gm5091 sequence contained binding sites of miR-27b, miR-23b and miR-24, and we proved that miR-27b/23b/24 all bound to Gm5091 by using RNA pull-down assay...
June 23, 2018: Cell Biology International
Ying Wang, Kwaku Appiah-Kubi, Ting Lan, Min Wu, Ji Pang, Hai Qian, Yan Tao, Lu Jiang, Yan Wu, Yongchang Chen
Previous studies revealed that type II Cgmp-dependent protein kinase G (PKG II) could inhibit the activation of epidermal growth factor receptor (EGFR) which is a widely investigated RTK. PDGFR belongs to family of receptor tyrosine kinases (RTKs) too. However, the effect of PKG II on PDGFR activation is not clear yet. This study investigated potential regulatory effect of PKG II on activation of PDGFRβ and the downstream signaling transductions in gastric cancer. The results from CCK8 assay and Transwell assay indicated that PDGF-BB induced cell proliferation and migration...
June 23, 2018: Cell Biology International
Anute Pravitharangul, Srisurang Suttapreyasri, Chidchanok Leethanakul
The facial bones and long bones have distinct developmental origins, structures and cellular compositions. This study aimed to compare the in vitro responses of human mandible and long bone osteoblasts to low-magnitude, high-frequency (LMHF) mechanical vibration in terms of expression of mediators of bone remodeling. Osteoblast-like cell cultures were prepared from iliac crest and mandibular bone specimens from three individuals and cultured in osteogenic induction media. Induction of mature osteoblastic phenotypes was confirmed by analysis of DNA content, alkaline phosphatase activity and gene expression every 3 days for 27 days...
June 19, 2018: Cell Biology International
Wan Zhou, Shandong Ye
Insulin resistance (IR) is a hallmark of type 2 diabetes mellitus (T2DM). This study aimed to explore the effects of rapamycin, a specific inhibitor of kinase mammalian target of rapamycin (mTOR), on IR in T2DM rats, and to validate whether the underlying mechanism was associated with autophagy. In this study, the model of T2DM rats was established by feeding the animals with a high-fat diet (HFD) and intraperitoneal injection of streptozotocin (STZ). Diabetic rats were randomly divided into model of T2DM control group (DM-C, n=15), metformin group (DM-M, n=15), rapamycin group (DM-Rapa, n=15), 3-methyladenine (3-MA) group (DM-3-MA, n=15), and rapamycin+3-MA group (DM-Rapa-3-MA, n=15)...
June 16, 2018: Cell Biology International
Xin Yu, Qilong Wan, Gu Cheng, Xin Cheng, Jing Zhang, Janak L Pathak, Zubing Li
Mesenchymal stem cells homing and migration is a crucial step during bone fracture healing. Hypoxic environment in fracture site induces bone marrow mesenchymal stem cells (BMSCs) migration, but its mechanism remains unclear. Our previous study and studies by other groups have reported the involvement of signal transducer and activator of transcription 3 (STAT3) pathway in cell migration. However, the role of STAT3 pathway in hypoxia-induced cell migration is still unknown. In this study, we investigated the role of STAT3 signaling in hypoxia-induced BMSCs migration and osteogenic differentiation...
June 16, 2018: Cell Biology International
Caterina Cipriani, Simona Pascarella, Fosca Errante, Beatrice Menicacci, Lucia Magnelli, Alessandra Mocali, Paolo Rovero, Lisa Giovannelli
The pharmacological modulation of collagen turnover is a strategy potentially useful in different skin conditions. The serine protease inhibitor Serpin A1 and portions of its C-terminal region have been investigated as collagen modulators. To clarify the mechanisms by which the C-terminal 409-418 peptide SA1-III increases extracellular type I collagen levels, to compare its activities range with that of the originator molecule Serpin A1, and to evaluate its efficacy in primary cultures from adult and aged human subjects...
June 16, 2018: Cell Biology International
Nannan Gu, Shunpeng Xing, Sihan Chen, Yuxi Zhou, Tao Jiang, Yingfu Jiao, Yuan Gao, Weifeng Yu, Zhengyu He, Daxiang Wen
Aberrant aggregation and activation of lung fibroblasts is a key process in pulmonary fibrosis, but the underlying mechanism remains enigmatic. Forkhead Box O3a (FoxO3a) is considered to be an important transcription factor that could regulate both cell cycle and cell viability. To investigate the role of FoxO3a on LPS-induced lung fibroblast proliferation, we transfected FoxO3a-SiRNA or FoxO3a-OE lentivirus into cultured mouse lung fibroblasts to knockdown or overexpress FoxO3a and pretreated mouse lung fibroblasts with gefitinib to enhance FoxO3a activity...
June 16, 2018: Cell Biology International
Yang Li, JianMin Liang, Juan Hu, Xiaoyong Ren, Ying Sheng
Human cholesteatoma perimatrix fibroblasts (hCPFs) can stimulate the endothelial cells of nearby microvessels to proliferate and migrate in a paracrine manner. Exosomes, secreted from various cell types, are one of the most important paracrine factors and play critical roles in intercellular communication. However, whether exosomes derived from human cholesteatoma perimatrix fibroblasts (hCPFs-Exo) can promote angiogenesis has not been reported. In this study, we isolated exosomes secreted by hCPFs and observed that hCPFs-Exo was able to promote migration and tube formation in human umbilical vein endothelial cells (HUVECs)...
June 15, 2018: Cell Biology International
Nikolay Pydiura, Yaroslav Pirko, Dmitry Galinousky, Anastasiia Postovoitova, Alla Yemets, Aleksandr Kilchevsky, Yaroslav Blume
Flax (Linum usitatissimum L.) is a valuable food and fiber crop cultivated for its quality fiber and seed oil. α-, β-, γ-tubulins and actins are the main structural proteins of the cytoskeleton. α- and γ-tubulin and actin genes have not been characterized yet in the flax genome. In this study, we have identified 6 α-tubulin genes, 13 β-tubulin genes, 2 γ-tubulin genes, and 15 actin genes in the flax genome and analyzed the phylogenetic relationships between flax and Arabidopsis thaliana tubulin and actin genes...
June 8, 2018: Cell Biology International
Jinyao Wang, Yizhe Wang, Chunlei Zheng, Kezuo Hou, Tieqiong Zhang, Xiujuan Qu, Yunpeng Liu, Jian Kang, Xuejun Hu, Xiaofang Che
Tyrosine kinase Inhibitors (TKIs) of epidermal growth factor receptor (EGFR) has considerably benefited for non-small cell lung carcinomas (NSCLC) harbor mutations in EGFR. However, the factors attenuating EGFR-TKI efficiency are obstacles to inhibit the proliferation of EGFR-mutant NSCLC cells successfully. Clarifying the insensitivity mechanisms of EGFR-TKI would help to develop new treatment strategy. In this study, the sensitivity of EGFR-mutant NSCLC cell lines, PC9 and HCC827, to icotinib was detected...
June 8, 2018: Cell Biology International
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