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Zhizhen Dong, Jianrong Chen, Xuli Yang, Wenjie Zheng, Li Wang, Miao Fang, Mengna Wu, Min Yao, Dengfu Yao
Lung cancer is the most common malignant tumor with increasing angiopoietin-2 (Ang-2) and a high rate of metastasis. However, the mechanism of Ang-2 enhancing tumor proliferation and facilitating metastasis remains to be clarified. In this study, Ang-2 expression and its gene transcription on effects of biological behaviors and epithelial-mesenchymal transition (EMT) were investigated in lung cancers. Total incidence of Ang-2 expression in the cancerous tissues was up to 91.8 % (112 of 122) with significantly higher (χ2 =103...
February 27, 2018: Oncotarget
Honghong Zhou, Yongshuo Liu, Rui Zhu, Fang Ding, Xiufeng Cao, Dongxin Lin, Zhihua Liu
Snail is a key regulator of epithelial-mesenchymal transition (EMT) and plays an important role in tumor progression and metastasis. Snail is rapidly degraded in the cells and its protein level is critically controlled. Although several E3 ligases regulating Snail degradation have been defined, the deubiquitinases (DUBs) responsible for Snail deubiquitination are less studied. We identified ovarian tumor domain-containing ubiquitin aldehyde binding protein 1 (OTUB1) as a DUB that stabilizes Snail through preventing its ubiquitination and proteasomal degradation...
March 21, 2018: Oncogene
Ana Margarida Alho, José Meireles, Manuela Schnyder, Luís Cardoso, Silvana Belo, Peter Deplazes, Luís Madeira de Carvalho
Cardiopulmonary nematodes are life-threatening pet parasites increasingly reported throughout Europe, with overlapping endemic areas. Dirofilaria immitis is a mosquito-borne whilst Angiostrongylus vasorum is a snail-borne pathogen. Both adult nematodes reside in the pulmonary arteries and right cardiac ventricle of domestic and wild canids, causing a wide spectrum of clinical presentations ranging from cough, dyspnoea and exercise intolerance to severe vascular and pulmonary disease with hearth failure that may lead to death...
March 15, 2018: Veterinary Parasitology
Udesh Dhawan, Ming-Wen Sue, Kuan Chun Lan, Waradee Buddhakosai, Pao Hui Huang, Yi Cheng Chen, Po-Chun Chen, Wen-Liang Chen
Epithelial to Mesenchymal transition (EMT) is a highly orchestrated process motivated by the nature of physical, chemical composition of Tumor Microenvironment (TME). The role of physical framework of the tumor microenvironment in guiding cells towards EMT is poorly understood. To investigate this, breast cancer MDA-MB-231 and MCF-7 cells were cultured on nanochips comprising of Tantalum oxide nanodots ranging in diameter from 10 to 200nm, fabricated through electrochemical approach and collectively referred to as artificial microenvironments...
March 20, 2018: ACS Applied Materials & Interfaces
Christine Angelini, Schuyler G van Montfrans, Marc J S Hensel, Qiang He, Brian R Silliman
Climate change and consumer outbreaks are driving ecosystem collapse worldwide. Although much research has demonstrated that these factors can interact, how heterogeneity in top-down control intensity and physical forcing modulates ecosystem resilience to climate stress remains poorly understood. Here, we explore whether the nocturnal herbivorous crab Sesarma reticulatum can control spatially dominant cordgrass (Spartina alterniflora) growth and how its top-down effects vary with crab density, drought stress, and large-scale disturbance in southeastern US salt marshes...
March 20, 2018: Oecologia
Duanyang Zhai, Chunhui Cui, Lang Xie, Lianxu Cai, Jinlong Yu
Metastasis is the primary cause of mortality in colorectal cancer (CRC), the mechanism of which remains unclear. In the present study, by detecting mRNA expression using a reverse transcription-quantitative polymerase chain reaction (qPCR), it was revealed that sterol regulatory element-binding protein 1 (SREBP1) is highly expressed in CRC. Using a cell wound healing assay and a cell invasion assay, a novel metastasis-promoting role for SREBP1 in CRC was identified. Furthermore, snail family transcriptional repressor 1 (SNAIL) was identified as a key downstream effector of SREBP1 in CRC by the use of small interfering RNA against SNAIL...
April 2018: Oncology Letters
Xiupeng Zhang, Guiyang Jiang, Jingjing Wu, Haijing Zhou, Yong Zhang, Yuan Miao, Yangyang Feng, Juanhan Yu
Zinc finger protein 668 (ZNF668) is a recently discovered protein and its expression levels, as well as its involvement in the invasion and metastasis of non-small cell lung cancer (NSCLC), are largely unknown. In the present study, immunohistochemical analysis demonstrated that ZNF668 protein expression was decreased in lung tumors (51/167, 30.5%) compared with adjacent normal lung tissues (43/62, 69.4%; P<0.001). Subsequent statistical analysis revealed that ZNF668 expression was negatively associated with increased tumor-node-metastasis stage (P=0...
March 2018: Oncology Letters
Sreeharsha Gurrapu, Emanuela Pupo, Giulia Franzolin, Letizia Lanzetti, Luca Tamagnone
Semaphorin 4C (Sema4C) expression in human breast cancers correlates with poor disease outcome. Surprisingly, upon knock-down of Sema4C or its receptor PlexinB2 in diverse mammary carcinoma cells (but not their normal counterparts), we observed dramatic growth inhibition associated with impairment of G2/M phase transition, cytokinesis defects and the onset of cell senescence. Mechanistically, we demonstrated a Sema4C/PlexinB2/LARG-dependent signaling cascade that is required to maintain critical RhoA-GTP levels in cancer cells...
March 19, 2018: Cell Death and Differentiation
Małgorzata Proćków, Jarosław Proćków, Paweł Błażej, Paweł Mackiewicz
Trochulus hispidus and T. sericeus are hairy snails widely distributed in Europe. They differ in shell morphology and are usually found in various land habitats. However, their morphology does not match genetic distance as they do not form distinct clades. Therefore, it is interesting to determine to what extent environmental factors can control their phenotypes. We analysed the morphological traits and many environmental features of their habitats to find relationships between these parameters and explain ecological reasons for this plasticity...
March 1, 2018: Science of the Total Environment
K Imakawa, R Bai, K Kusama
During the peri-implantation period, ruminant conceptuses go through rapid elongation, followed by their attachment to the uterine endometrial epithelial cells, during which interferon-tau (IFNT), a trophectodermal cytokine required for the process of maternal recognition of pregnancy, is expressed in a temporal and spatial manner. On d 22 (d 0 = day of estrus), 2 to 3 d after the initiation of bovine conceptus attachment to the uterine epithelium, when IFNT production begins to subside, the expression of molecules related to epithelial-mesenchymal transition, zinc finger E-box binding homeobox 1, snail family transcriptional repressor 2, N-cadherin and vimentin was found in the trophectoderm...
March 15, 2018: Journal of Animal Science
Ge Shi, Wei Wu, Yi-Gang Wan, He Wei-Ming Hex, Yue Tu, Wen-Bei Han, Bu-Hui Liu, Ying-Lu Liu, Zi-Yue Wan
To explore the effects and molecular mechanisms of triptolide(TP)on improving podocyte epithelial-mesenchymal transition(EMT)induced by high dose of D-glucose(HG), the immortalized podocytes of mice in vitro were divided into the normal group(N), the high dose of D-glucose group(HG), the low dose of TP group(L-TP), the high dose of TP group(H-TP)and the mannitol group(MNT), and treated by the different measures respectively. More specifically, the podocytes in each group were separately treated by D-glucose(DG, 5 mmol·L⁻¹)or HG(25 mmol·L⁻¹)or HG(25 mmol·L⁻¹)+ TP(3 μg·L⁻¹)or HG(25 mmol·L⁻¹)+ TP(10 μg·L⁻¹)or DG(5 mmol·L⁻¹)+ MNT(24...
January 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Jinhua Wang, Wan Li, Xiangjin Zheng, Xiaocong Pang, Guanhua Du
FOXC1 is a vital member of FOX families which play important roles in biological processes including proliferation, differentiation, apoptosis, migration, invasion, metabolism, and longevity. Here we are focusing on roles of FOXC1 and their mechanisms in cancers. FOXC1 promoted progress of many cancers, such as breast cancer (especially basal-like breast cancer), hepatocellular carcinoma, gastric cancer and so on. FOXC1 was also found to be associated with drug resistance of cancers. FOXC1 promoted metastasis of cancers by increasing expression of MMP7, NEDD9 and Snail...
February 23, 2018: Oncotarget
Aifang Li, Yue Gu, Xueru Li, Hui Sun, He Zha, Jiaqing Xie, Jiali Zhao, Mao Huang, Lu Chen, Qi Peng, Yan Zhang, Yaguang Weng, Lan Zhou
Cervical cancer is the second most common gynecological cancer worldwide and remains one of the leading causes of cancer-associated mortality among women. S100A6 has been reported to be associated with the development of many types of cancer. The aim of the present study was to investigate the effect of S100A6 on the proliferation, apoptosis and migration of cervical cancer cells and its underlying molecular mechanisms. Quantative polymerase chain reaction (qPCR) was used to detect the basic mRNA level of S100A6 in HeLa, SiHa and CaSki cells...
April 2018: Oncology Letters
Jianghong Huang, Yujie Liang, Meiquan Xu, Jianyi Xiong, Daping Wang, Qiang Ding
The aim of the present study was to investigate the clinical significance of hsa-microRNA-124-3p (miR-124) in osteosarcoma (OS), and examine its role in cell growth and invasion. Using a microRNA chip array, the expression of miR-124 was detected in samples of surgically resected OS and matched against the levels of expression in tumor-adjacent normal tissues. The levels of miR-124 were upregulated in the OS cells through the transfection of miR-124 mimics. Cell proliferation and Transwell assays were performed to determine cell proliferation and invasion; Reverse transcription-quantitative polymerase chain reaction, western blot and luciferase assays were then used to detect the expression of the target gene snail family zinc finger 2 (Snail2)...
April 2018: Oncology Letters
Ziyao Liu, Yun Tang, Rongrong Zhou, Xiaosa Shi, Hongmei Zhang, Tengfei Liu, Zenglin Lian, Xinyuan Shi
BACKGROUND: The bi-directional solid fermentation product extract of Trametes robiniophila Murr (Huaier) with Radix Isatidis (TIF) has been shown to have good anti-tumor activity. However, the mechanisms of this activity are still unknown. In the present study, we aimed to investigate its inhibitory effect on both SK-BR-3 and MDA-MB-231 cells, and explore the possible mechanisms of its anti-cancer effect in vitro. METHODS: The experiment comprised a control group, Radix Isatidis group, Huaier group, and TIF group...
March 15, 2018: Journal of the Chinese Medical Association: JCMA
Nathalia Ferreira David, Selma Patrícia Diniz Cantanhede, Natanael Bezerra Monroe, Luciana Patrícia Lima Alves Pereira, Nêuton Silva-Souza, Ana Lúcia Abreu-Silva, Verônica Maria de Oliveira, Ligia Tchaicka
Two of the three vector species of Schistosoma mansoni Sambon, 1907 in Brazil occur in the state of Maranhão: Biomphalaria glabrata (Say, 1818) and Biomphalaria straminea (Dunker, 1848). For the implementation of effective measures to combat schistosomiasis, it is necessary to identify the spatial and seasonal dynamics of these snails. Therefore, this work brought together information from malacological survey carried out in São Luís (Maranhão, Brazil) to identify the spatial and seasonal distribution patterns of Biomphalaria spp...
March 17, 2018: Parasitology Research
Keun Soo Ahn, Ji Yeon Hwang, Ho-Seong Han, Sang Tae Kim, Ilseon Hwang, Young-Ok Chun
BACKGROUND: The impact of acute inflammation on cancer is unclear. Therefore, we evaluated the impact of acute inflammation on cancer progression in an animal model concerning morphological change as well as molecular features. MATERIAL AND METHODS: Murine pancreas ductal adenocarcinoma cell line (Panc-02) and zymosan were used for the induction of cancer and acute inflammation respectively, in C57/BL6 mice. In the C group (n = 10), 2 × 107 Panc02 cells were injected into the tail of the pancreas...
March 2018: Surgical Oncology
Changhui Wang, Yu Wu, Youquan Wang, Leilei Bai, Helong Jiang, Juhua Yu
This study presents an approach for developing inactivating materials to achieve an initial rapid and a long-term equilibrium P immobilization to control eutrophication based on drinking water treatment residue (DWTR), which is a byproduct of potable water production. By taking advantage of the long-term equilibrium P adsorption by DWTR, the La chemical properties, and the previous success of using La-modified bentonite clay (Phoslock® ), we used DWTR as a La carrier with different ratios to develop the specific materials...
March 9, 2018: Water Research
Cheng-Dong Ji, Yan-Xia Wang, Dong-Fang Xiang, Qiang Liu, Zhi-Hua Zhou, Feng Qian, Lang Yang, Yong Ren, Wei Cui, Sen-Lin Xu, Xi-Long Zhao, Xia Zhang, Yan Wang, Peng Zhang, Ji-Ming Wang, You-Hong Cui, Xiu-Wu Bian
Potassium ion channels are emerging as pro-malignant factors involved in cancer progression. In this study, we found that invading human gastric cancer (GC) cells express high level of inwardly rectifying potassium channel 2.1 (Kir2.1). Silencing Kir2.1 markedly reduced the invasive and metastatic capabilities as well as the epithelial-mesenchymal transition (EMT) of GC cells. The pro-malignant nature of Kir2.1 in GC cells was independent of potassium permeation but relied on its interaction with serine/threonine-protein kinase 38 (Stk38) to inhibit ubiquitination and degradation of mitogen-activated protein kinase kinase kinase 2 (MEKK2)...
March 16, 2018: Cancer Research
Yu-Shui Ma, Zhi-Jun Wu, Rui-Zhen Bai, Hua Dong, Bing-Xue Xie, Xiao-Hong Wu, Xiao-Sheng Hang, Ai-Ning Liu, Xiao-Hui Jiang, Gao-Ren Wang, Jun-Jian Jiang, Wen-Huan Xu, Xiao-Ping Chen, Guang-Hong Tan, Da Fu, Ji-Bin Liu, Quan Liu
Metastatic invasion is the primary cause of treatment failure for GBM. EMT is one of the most important events in the invasion of GBM; therefore, understanding the molecular mechanisms of EMT is crucial for the treatment of GBM. In this study, high expression of DRR1 was identified to correlate with a shorter median overall and relapse-free survival. Loss-of-function assays using shDRR1 weakened the invasive potential of the GBM cell lines through regulation of EMT-markers. The expressions of p-AKT were significantly decreased after DRR-depletion in SHG44 and U373 cells...
March 13, 2018: Cancer Letters
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