keyword
MENU ▼
Read by QxMD icon Read
search

Synuclein migration

keyword
https://www.readbyqxmd.com/read/27895530/alpha-synuclein-contributes-to-malignant-progression-of-human-meningioma-via-the-akt-mtor-pathway
#1
Yiqin Ge, Kan Xu
BACKGROUND: The aim of this study is to explore the expression of alpha-synuclein (α-synuclein) in benign, atypical, and anaplastic meningiomas and determine its role in the malignant progression of meningiomas. METHODS: Expression of α-synuclein was measured in 44 meningioma samples by real-time PCR analysis. The effects of overexpression or knockdown of α-synuclein on meningioma cell growth, invasiveness, and tumorigenicity were determined. RESULTS: Atypical and anaplastic meningiomas displayed significantly greater levels of α-synuclein mRNA, relative to benign tumors...
2016: Cancer Cell International
https://www.readbyqxmd.com/read/27865851/pathological-%C3%AE-synuclein-exacerbates-the-progression-of-parkinson-s-disease-through-microglial-activation
#2
Qiu-Shuang Zhang, Yang Heng, Yu-He Yuan, Nai-Hong Chen
Parkinson's disease (PD) is characterized by α-synuclein accumulation, dopaminergic neuron loss and inflammation. α-Synuclein can be secreted by neurons and activate microglia to different degrees. Excessive microglial activation can increase the production of tumor necrosis factor alpha (TNF-α), interleukin-1-β (IL-1β), interleukin-6 (IL-6), interferon-γ (INF-γ), inducible nitric oxide synthase (iNOS), reactive oxygen species (ROS) and nitric oxide (NO), and can also enhance microglial phagocytosis and migration as well as lymphocyte infiltration...
November 16, 2016: Toxicology Letters
https://www.readbyqxmd.com/read/27112482/-construction-of-lentiviral-vector-of-sirna-specific-for-%C3%AE-synuclein-and-its-inhibition-effect-on-colorectal-carcinoma-cell-line-sw1116
#3
Feng Huang, Shaohua Xu, Qing Ye, Qiuhong Zheng, Yangmei Xu, Qinying Liu
OBJECTIVE: To construct a lentiviral vector carrying the γ-synuclein(SNCG) gene and establish a human colorectal carcinoma cell line SW1116 stably expressing this gene, and then investigate the inhibition of the growth and invasion capacity of SW1116 cells. METHODS: RNA interference fragment was designed according to the SNCG sequence (GenBank: No.NM003087.2), and then SNCG RNAi effective target genes were screened. After the Oligo DNA of target sequences was synthesized, the lentiviral vectors carrying LV-SNCG-RNAi-EGFP (RNAi group) and LV-SNCG-NC-EGFP (NC group) were constructed and packaged to produce lentivirus venom...
April 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/26937787/characterization-of-%C3%AE-synuclein-multimer-stoichiometry-in-complex-biological-samples-by-electrophoresis
#4
Bryan A Killinger, Anna Moszczynska
The aberrant aggregation of α-synuclein in the brain is a hallmark of Parkinson's disease (PD). In vivo soluble α-synuclein occurs as a monomer and several multimers, the latter of which may be important for the biological function of α-synuclein. Currently, there is a lack of reproducible methods to compare α-synuclein multimer abundance between complex biological samples. Here we developed a method, termed "multimer-PAGE," that combines in-gel chemical cross-linking with several common electrophoretic techniques to measure the stoichiometry of soluble α-synuclein multimers in brain tissue lysates...
April 5, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/26661712/%C3%AE-synuclein-expression-is-a-malignant-index-in-oral-squamous-cell-carcinoma
#5
J C Cheng, M T Chiang, C H Lee, S Y Liu, K C Chiu, Y T Chou, R Y Huang, S M Huang, Y S Shieh
Dysregulation of γ-synuclein (SNCG) has been reported in many cancers; however, its role in cancer development is still controversial. Here, we examined the potential involvement of DNA methylation in regulating SNCG and its role in oral squamous cell carcinoma (OSCC). We used 8 OSCC cell lines to investigate SNCG methylation and expression. SNCG methylation was examination by methylation-specific polymerase chain reaction and bisulfate sequencing. Cells showing a high degree of SNCG methylation were treated with 5-aza (methylation inhibitor), and changes in their methylation and expression profiles were analyzed...
April 2016: Journal of Dental Research
https://www.readbyqxmd.com/read/26558842/cofilin-1-activation-prevents-the-defects-in-axon-elongation-and-guidance-induced-by-extracellular-alpha-synuclein
#6
Sharada Tilve, Francesco Difato, Evelina Chieregatti
Impaired adult neurogenesis and axon traumatic injury participate in the severity of neurodegenerative diseases. Alpha-synuclein, a cytosolic protein involved in Parkinson's disease, may be released from neurons, suggesting a role for excess secreted alpha-synuclein in the onset and spread of the pathology. Here we provide evidence that long term exposure of young neurons to extracellular alpha-synuclein hampers axon elongation and growth cone turning. We show that actin turnover and the rate of movement of actin waves along the axon are altered, due to alpha-synuclein-induced inactivation of cofilin...
2015: Scientific Reports
https://www.readbyqxmd.com/read/26521046/the-breast-cancer-susceptibility-gene-product-%C3%AE-synuclein-alters-cell-behavior-through-its-corrected-interaction-with-phospholipase-c%C3%AE
#7
V Siddartha Yerramilli, Suzanne Scarlata
The breast cancer susceptibility gene protein, also known as γ-synuclein, is highly expressed in human breast cancer in a stage-specific manner, with highest expression in late stage cancer. In model systems, γ-synuclein binds phospholipase Cβ2 which is regulated by Gαq to generate intracellular Ca(2+) signals. PLCβ2, which is also absent in normal tissue but highly expressed in breast cancer, is additionally regulated by Rac to promote migration pathways. We have found that γ-synuclein binds to the same region of PLCβ2 as Gαq...
January 2016: Cellular Signalling
https://www.readbyqxmd.com/read/26136884/unregulated-long-non-coding-rna-ak058003-promotes-the-proliferation-invasion-and-metastasis-of-breast-cancer-by-regulating-the-expression-levels-of-the-%C3%AE-synuclein-gene
#8
Kai He, Peilin Wang
The aim of the present study was to investigate the function of long chain non-coding RNA (lncRNA) in breast cancer cells. Quantitative polymerase chain reaction was used to measure mRNA expression levels in breast cancer tissues, adjacent tissues and in MCF-7 breast cancer cells. Western blot analysis was used to determine the protein expression levels. In addition, a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was employed to measure the rates of cell proliferation. The invasion and migration of the MCF-7 cells were examined using a Transwell® assay...
May 2015: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/26129771/changes-in-secondary-structure-of-%C3%AE-synuclein-during-oligomerization-induced-by-reactive-aldehydes
#9
Yixiao Cai, Christofer Lendel, Lars Österlund, Alex Kasrayan, Lars Lannfelt, Martin Ingelsson, Fredrik Nikolajeff, Mikael Karlsson, Joakim Bergström
The oxidative stress-related reactive aldehydes 4-hydroxy-2-nonenal (HNE) and 4-oxo-2-nonenal (ONE) have been shown to promote formation of α-synuclein oligomers in vitro. However, the changes in secondary structure of α-synuclein and the kinetics of the oligomerization process are not known and were the focus of this study. Size exclusion chromatography showed that after 1 h of incubation, HNE induced the formation of an oligomeric α-synuclein peak with a molecular weight of about ∼2000 kDa, which coincided with a decreasing ∼50 kDa monomeric peak...
August 14, 2015: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/25997706/synuclein-%C3%AE-promotes-migration-of-mcf7-breast-cancer-cells-by-activating-extracellular-signal-regulated-kinase-pathway-and-breaking-cell-cell-junctions
#10
Qing Zhuang, Caiyun Liu, Like Qu, Chengchao Shou
Synuclein-γ (SNCG), a synuclein family member, promotes migration, invasion and metastasis of tumor cells; however, the mechanism remains unclear. The present study investigated the effect of SNCG on malignant phenotypes of MCF7 cells using cell proliferation analysis, cell migration assays and wound healing assays, and verified its effects on extracellular‑signal regulated kinase (Erk) activation and epithelial to mesenchymal transition‑related markers using western blotting. The results indicated that SNCG increased migration (P<0...
September 2015: Molecular Medicine Reports
https://www.readbyqxmd.com/read/25825709/%C3%AE-synuclein-a-chemoattractant-directs-microglial-migration-via-h2o2-dependent-lyn-phosphorylation
#11
Shijun Wang, Chun-Hsien Chu, Tessandra Stewart, Carmen Ginghina, Yifei Wang, Hui Nie, Mingri Guo, Belinda Wilson, Jau-Shyong Hong, Jing Zhang
Malformed α-Synuclein (α-syn) aggregates in neurons are released into the extracellular space, activating microglia to induce chronic neuroinflammation that further enhances neuronal damage in α-synucleinopathies, such as Parkinson's disease. The mechanisms by which α-syn aggregates activate and recruit microglia remain unclear, however. Here we show that α-syn aggregates act as chemoattractants to direct microglia toward damaged neurons. In addition, we describe a mechanism underlying this directional migration of microglia...
April 14, 2015: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/25499222/hypoxia-inducible-lncrna-ak058003-promotes-gastric-cancer-metastasis-by-targeting-%C3%AE-synuclein
#12
Yafang Wang, Xiangqiang Liu, Hongbo Zhang, Li Sun, Yongan Zhou, Haifeng Jin, Hongwei Zhang, Hui Zhang, Jiaming Liu, Hao Guo, Yongzhan Nie, Kaichun Wu, Daiming Fan, Helong Zhang, Lili Liu
Hypoxia has been implicated as a crucial microenvironmental factor that induces cancer metastasis. We previously reported that hypoxia could promote gastric cancer (GC) metastasis, but the underlying mechanisms are not clear. Long noncoding RNAs (lncRNAs) have recently emerged as important regulators of carcinogenesis that act on multiple pathways. However, whether lncRNAs are involved in hypoxia-induced GC metastasis remains unknown. In this study, we investigated the differentially expressed lncRNAs resulting from hypoxia-induced GC and normoxia conditions using microarrays and validated our results through real-time quantitative polymerase chain reaction...
December 2014: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/25320617/sirna-mediated-suppression-of-synuclein-%C3%AE-inhibits-mda-mb-231-cell-migration-and-proliferation-by-downregulating-the-phosphorylation-of-akt-and-erk
#13
Jingsong He, Ni Xie, Jianbo Yang, Hong Guan, Weicai Chen, Huisheng Wu, Zishan Yuan, Kun Wang, Guojin Li, Jie Sun, Limin Yu
PURPOSE: Synuclein-γ (SNCG), which was initially identified as breast cancer specific gene 1, is highly expressed in advanced breast cancers, but not in normal or benign breast tissue. This study aimed to evaluate the effects of SNCG siRNA-treatment on breast cancer cells and elucidate the associated mechanisms. METHODS: Vectors containing SNCG and negative control (NC) siRNAs were transfected into MDA-MB-231 cells; mRNA levels were determined by real-time polymerase chain reaction...
September 2014: Journal of Breast Cancer
https://www.readbyqxmd.com/read/25229320/unconventional-secretion-of-synuclein-%C3%AE-promotes-tumor-cell-invasion
#14
Caiyun Liu, Like Qu, Shenyi Lian, Zhihua Tian, Chuanke Zhao, Lin Meng, Chengchao Shou
Synuclein-γ (SNCG) is a chaperone protein and exists mainly in the cytoplasm. SNCG confers chemoresistance, and is a potential unfavorable biomarker for multiple types of cancer. Our previous work demonstrated that SNCG could be detected in the serum of cancer patients and the medium of cultured cancer cells, but the mechanism of SNCG secretion and its biological roles are unknown. Here, we showed that SNCG levels in the culture medium were positively correlated with cancer cell densities and the concentrations of fetal bovine serum added...
November 2014: FEBS Journal
https://www.readbyqxmd.com/read/24743837/%C3%AE-1-integrin-dependent-migration-of-microglia-in-response-to-neuron-released-%C3%AE-synuclein
#15
Changyoun Kim, Eun-Deok Cho, Hyung-Koo Kim, Sungyong You, He-Jin Lee, Daehee Hwang, Seung-Jae Lee
Chronic neuroinflammation is an integral pathological feature of major neurodegenerative diseases. The recruitment of microglia to affected brain regions and the activation of these cells are the major events leading to disease-associated neuroinflammation. In a previous study, we showed that neuron-released α-synuclein can activate microglia through activating the Toll-like receptor 2 (TLR2) pathway, resulting in proinflammatory responses. However, it is not clear whether other signaling pathways are involved in the migration and activation of microglia in response to neuron-released α-synuclein...
2014: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/24448788/low-levels-of-soluble-ng2-in-cerebrospinal-fluid-from-patients-with-dementia-with-lewy-bodies
#16
Henrietta M Nielsen, Sara Hall, Yulia Surova, Katarina Nägga, Christer Nilsson, Elisabet Londos, Lennart Minthon, Oskar Hansson, Malin Wennström
The proteoglycan NG2 plays a major role in proliferation, migration, and differentiation of pericytes and NG2 cells in the brain. We have previously reported decreased soluble NG2 (sNG2) levels in cerebrospinal fluid (CSF) from patients with Alzheimer's disease (AD) and a relationship between sNG2 and AD biomarkers in these patients. To further investigate whether alterations in sNG2 is specific to AD pathology, we measured levels of sNG2 in CSF from a patient cohort consisting of non-demented controls (n = 51), patients with Parkinson's disease (PD) (n = 61), and patients with dementia with Lewy bodies (DLB) (n = 37), two synucleinopathies whereof the latter disorder frequently coincides with amyloid-β pathology similar to AD...
2014: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/23970348/effects-of-%C3%AE-synuclein-on-the-tumorigenicity-and-metastasis-of-colon-cancer-sw1116-cells-in-vitro-and-in-vivo
#17
Qing Ye, Feng Huang, Xiao-Ying Wang, Yang-Mei Xu, Fu-Sheng Gong, Li-Jie Huang, Chun-Kang Yang, Qiu-Hong Zheng, Min-Gang Ying
Recent evidence suggests the involvement of γ-synuclein in tumorigenesis and tumor progression. The present study was designed to further clarify the effects of γ-synuclein on the biological features of colon cancer cells in vitro and in vivo. We constructed the eukaryotic expression vector and siRNA vector and selected stable transfectants to respectively upregulate and downregulate γ-synuclein expression in SW1116 cells. we found that silencing of γ-synuclein significantly attenuated SW1116 cell growth and colony formation in vitro (P<0...
November 2013: Oncology Reports
https://www.readbyqxmd.com/read/23729330/loss-of-caveolin-1-in-prostate-cancer-stroma-correlates-with-reduced-relapse-free-survival-and-is-functionally-relevant-to-tumour-progression
#18
Gustavo Ayala, Matteo Morello, Anna Frolov, Sungyong You, Rile Li, Fabiana Rosati, Gianluca Bartolucci, Giovanna Danza, Rosalyn M Adam, Timothy C Thompson, Michael P Lisanti, Michael R Freeman, Dolores Di Vizio
Levels of caveolin-1 (Cav-1) in tumour epithelial cells increase during prostate cancer progression. Conversely, Cav-1 expression in the stroma can decline in advanced and metastatic prostate cancer. In a large cohort of 724 prostate cancers, we observed significantly decreased levels of stromal Cav-1 in concordance with increased Gleason score (p = 0.012). Importantly, reduced expression of Cav-1 in the stroma correlated with reduced relapse-free survival (p = 0.009), suggesting a role for stromal Cav-1 in inhibiting advanced disease...
September 2013: Journal of Pathology
https://www.readbyqxmd.com/read/23390095/parkinson-s-disease-and-alpha-synuclein-is-parkinson-s-disease-a-prion-like-disorder
#19
REVIEW
C Warren Olanow, Patrik Brundin
Altered protein handling is thought to play a key role in the etiopathogenesis of Parkinson's disease (PD), as the disorder is characterized neuropathologically by the accumulation of intraneuronal protein aggregates (Lewy bodies and Lewy neurites). Attention has particularly focused on the α-synuclein protein, as it is the principal component of Lewy pathology. Moreover, point mutations in the α-synuclein gene cause rare familial forms of PD. Importantly, duplication/triplication of the wild type α-synuclein gene also cause a form of PD, indicating that increased levels of the normal α-synuclein protein is sufficient to cause the disease...
January 2013: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/23231703/neural-protein-gamma-synuclein-interacting-with-androgen-receptor-promotes-human-prostate-cancer-progression
#20
Junyi Chen, Li Jiao, Chuanliang Xu, Yongwei Yu, Zhensheng Zhang, Zheng Chang, Zhen Deng, Yinghao Sun
BACKGROUND: Gamma-synuclein (SNCG) has previously been demonstrated to be significantly correlated with metastatic malignancies; however, in-depth investigation of SNCG in prostate cancer is still lacking. In the present study, we evaluated the role of SNCG in prostate cancer progression and explored the underlying mechanisms. METHODS: First, alteration of SNCG expression in LNCaP cell line to test the ability of SNCG on cellular properties in vitro and vivo whenever exposing with androgen or not...
2012: BMC Cancer
keyword
keyword
17077
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"