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https://www.readbyqxmd.com/read/29236322/microrna-383-suppresses-the-pi3k-akt-mtor-signaling-pathway-to-inhibit-development-of-cervical-cancer-via-down-regulating-parp2
#1
Peng Teng, Yan Jiao, Min Hao, Xin Tang
This study aims to evaluate the effect of the regulatory relationship between microRNA-383 (miR-383) and PARP2 in the cell migration and invasion in human with cervical cancer (CC) via the PI3K-AKT-MTOR signaling pathway. Cancerous tissues and corresponding paracancerous tissues were collected from 115 patients with CC. The positive expression rate of PARP2 was detected by immunohistochemistry. Hela cells with highest miR-383 expression were selected and assigned into the blank, negative control (NC), miR-383 mimic, miR-383 inhibitor, si-PARP2 and miR-383 inhibitor + si-PARP2 groups...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29236319/effects-of-long-non-coding-rna-host2-on-cell-migration-and-invasion-by-regulating-microrna-let-7b-in-breast-cancer
#2
Peng-Wei Lu, Lin Li, Fang Wang, Yuan-Ting Gu
The study intends to investigate the effects of long non-coding RNA HOST2 (lncRNA HOST2) on cell migration and invasion by regulating microRNA let-7b (let-7b) in breast cancer. Breast cancer and adjacent normal tissues were collected from 98 patients with breast cancer. Breast cancer MCF-7 cells were divided into the blank, negative control (NC), pcDNA3-Mock, siHOST2, let-7b inhibitor, pcDNA3-HOST2, let-7b mimic, pcDNA3-HOST2 + let-7b mimic and siHOST2 + let-7b inhibitor groups. RT-qPCR was used to detect the mRNA expressions of HOST2, let-7b and c-Myc...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29236308/database-of-transcription-factors-in-lung-cancer-dbtflc-a-novel-resource-for-exploring-transcription-factors-associated-with-lung-cancer
#3
A Thabitha, Ameya Athul Dravid, Riya Tripathi, S Sajitha Lulu
Lung cancer is considered as the most prevalent form of cancer and it is found to be frequent cause of cancer related death. Even though, approved molecular targeted therapies other than chemotherapy are currently unavailable, the mechanism of pathogenesis in lung cancer remains still unclear. Transcription factors (TFs) play a critical role in cancer cell processes, such as cell proliferation, apoptosis, migration, and regulate gene expression. Thus, the identification and characterization of transcription factors involved in lung cancer would provide valuable information for further elucidation of the mechanism(s) underlying pathogenesis and the identification of potential therapeutic target types, which are critical for the development of therapeutic strategies...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29234153/netrin-1-elicits-metastatic-potential-of-non-small-cell-lung-carcinoma-cell-by-enhancing-cell-invasion-migration-and-vasculogenic-mimicry-via-emt-induction
#4
Xiaofei Zhang, Ping Cui, Beichen Ding, Yuening Guo, Kaiyu Han, Jianing Li, Hong Chen, Wei Zhang
Ectopic expression of netrin-1 has been validated in several cancers including non-small cell lung cancer (NSCLC). Recent research confirms the critical role of netrin-1 in NSCLC growth and its prognostic value. Unfortunately, its contribution in NSCLC metastasis remains elusive. Here, netrin-1 had relatively high expression in NSCLC tissues and cells, especially in high metastatic groups. Notably, netrin-1 overexpression aggravated the malignant metastatic behavior of NSCLC cells, including cell invasion, migration, and vasculogenic mimicry (VM), whereas netrin-1 depression reversely dampened the metastatic potential...
December 12, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/29234123/dusp1-regulates-apoptosis-and-cell-migration-but-not-the-jip1-protected-cytokine-response-during-respiratory-syncytial-virus-and-sendai-virus-infection
#5
Alexa C Robitaille, Elise Caron, Nicolas Zucchini, Espérance Mukawera, Damien Adam, Mélissa K Mariani, Anaïs Gélinas, Audray Fortin, Emmanuelle Brochiero, Nathalie Grandvaux
The host antiviral response involves the induction of interferons and proinflammatory cytokines, but also the activation of cell death pathways, including apoptosis, to limit viral replication and spreading. This host defense is strictly regulated to eliminate the infection while limiting tissue damage that is associated with virus pathogenesis. Post-translational modifications, most notably phosphorylation, are key regulators of the antiviral defense implying an important role of protein phosphatases. Here, we investigated the role of the dual-specificity phosphatase 1 (DUSP1) in the host defense against human respiratory syncytial virus (RSV), a pathogenic virus of the Pneumoviridae family, and Sendai virus (SeV), a model virus being developed as a vector for anti-RSV vaccine...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29234095/enclaves-of-genetic-diversity-resisted-inca-impacts-on-population-history
#6
Chiara Barbieri, José R Sandoval, Jairo Valqui, Aviva Shimelman, Stefan Ziemendorff, Roland Schröder, Maria Geppert, Lutz Roewer, Russell Gray, Mark Stoneking, Ricardo Fujita, Paul Heggarty
The Inca Empire is claimed to have driven massive population movements in western South America, and to have spread Quechua, the most widely-spoken language family of the indigenous Americas. A test-case is the Chachapoyas region of northern Peru, reported as a focal point of Inca population displacements. Chachapoyas also spans the environmental, cultural and demographic divides between Amazonia and the Andes, and stands along the lowest-altitude corridor from the rainforest to the Pacific coast. Following a sampling strategy informed by linguistic data, we collected 119 samples, analysed for full mtDNA genomes and Y-chromosome STRs...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29232894/significant-down-regulation-of-biological-adhesion-genes-in-porcine-oocytes-after-ivm
#7
Joanna Budna, Piotr Celichowski, Artur Bryja, Marta Dyszkiewicz-Konwińska, Michal Jeseta, Dorota Bukowska, Paweł Antosik, Klaus Peter Brüssow, Małgorzata Bruska, Michał Nowicki, Maciej Zabel, Bartosz Kempisty
Proper maturation of the mammalian oocyte is a compound processes determining successful monospermic fertilization, however the number of fully mature porcine oocytes is still unsatisfactory. Since oocytes' maturation and fertilization involve cellular adhesion and membranous contact, the aim was to investigate cell adhesion ontology group in porcine oocytes. The oocytes were collected from ovaries of 45 pubertal crossbred Landrace gilts and subjected to two BCB tests. After the first test, only granulosa cell-free BCB⁺ oocytes were directly exposed to microarray assays and RT-qPCR ("before IVM" group), or first in vitro matured and then if classified as BCB⁺ passed to molecular analyses ("after IVM" group)...
December 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29231798/n-cadherin-knockdown-leads-to-disruption-of-trophoblastic-and-endothelial-cell-interaction-in-a-3d-cell-culture-model-new-insights-in-trophoblast-invasion-failure
#8
A Multhaup, B Huppertz, C Göhner, M Böhringer, M Mai, U Markert, E Schleußner, T Groten
INTRODUCTION: Trophoblast homing to maternal spiral arteries is mandatory for successful placentation. Cell-cell adhesion molecules regulate this process and adhesion molecule expression is altered in impaired placentation. We hypothesize that, similar to immune cell recruitment, trophoblast cell adherence and rolling are primarily mediated by adhesion molecules like, cadherins, immunoglobulins, selectins and their partnering ligands. Here, the interdependence of adhesion molecule expression in trophoblastic cell lines of diverse origin was investigated in relation to their interaction with endothelial cell networks on Matrigel® co-cultures and the effect of specific adhesion molecule knockdown analyzed...
December 12, 2017: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29231257/halofuginone-induced-autophagy-suppresses-the-migration-and-invasion-of-mcf-7-cells-via-regulation-of-stmn1-and-p53
#9
Xiaojing Xia, Lei Wang, Xiaojian Zhang, Shan Wang, Lianchen Lei, Likun Cheng, Yanzhao Xu, Yawei Sun, Bolin Hang, GaiPing Zhang, YueYu Bai, JianHe Hu
Traditional Chinese medicines have been recognized as especially promising anticancer agents in modern anticancer research. Halofuginone (HF), an analog of quinazolinone alkaloid extracted from Dichroa febrifuga, is widely used in traditional medicine. However, whether HF inhibits the growth of breast cancer cells and/or reduces the migration and invasion of MCF-7 human breast cancer cells, as well as the underlying mechanisms in vitro, remains unclear. In this study, we report that an HF extract inhibits the growth of MCF-7 cells and reduces their migration and invasion, an important feature of potential anticancer agents...
December 12, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29230638/application-of-the-sodium-hyaluronate-cntf-scaffolds-in-repairing-adult-rat-spinal-cord-injury-and-facilitating-neural-network-formation
#10
Yabin Xie, Wei Song, Wen Zhao, Yudan Gao, Junkui Shang, Peng Hao, Zhaoyang Yang, Hongmei Duan, Xiaoguang Li
The present study aimed to explore the potential of the sodium hyaluronate-CNTF (ciliary neurotrophic factor) scaffold in activating endogenous neurogenesis and facilitating neural network re-formation after the adult rat spinal cord injury (SCI). After completely cutting and removing a 5-mm adult rat T8 segment, a sodium hyaluronate-CNTF scaffold was implanted into the lesion area. Dil tracing and immunofluorescence staining were used to observe the proliferation, differentiation and integration of neural stem cells (NSCs) after SCI...
December 6, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/29230359/genetic-differentiation-and-phylogeography-of-mediterranean-north-eastern-atlantic-blue-shark-prionace-glauca-l-1758-using-mitochondrial-dna-panmixia-or-complex-stock-structure
#11
Agostino Leone, Ilenia Urso, Dimitrios Damalas, Jann Martinsohn, Antonella Zanzi, Stefano Mariani, Emilio Sperone, Primo Micarelli, Fulvio Garibaldi, Persefoni Megalofonou, Luca Bargelloni, Rafaella Franch, David Macias, Paulo Prodöhl, Séan Fitzpatrick, Marco Stagioni, Fausto Tinti, Alessia Cariani
Background: The blue shark (Prionace glauca, Linnaeus 1758) is one of the most abundant epipelagic shark inhabiting all the oceans except the poles, including the Mediterranean Sea, but its genetic structure has not been confirmed at basin and interoceanic distances. Past tagging programs in the Atlantic Ocean failed to find evidence of migration of blue sharks between the Mediterranean and the adjacent Atlantic, despite the extreme vagility of the species. Although the high rate of by-catch in the Mediterranean basin, to date no genetic study on Mediterranean blue shark was carried out, which constitutes a significant knowledge gap, considering that this population is classified as "Critically Endangered", unlike its open-ocean counterpart...
2017: PeerJ
https://www.readbyqxmd.com/read/29229426/cbx4-exhibits-oncogenic-activities-in-breast-cancer-via-notch1-signaling
#12
Jing-Sheng Zeng, Zhen-Dong Zhang, Li Pei, Zhi-Zhu Bai, Yong Yang, Hong Yang, Qiu-Hong Tian
Polycomb chromobox (CBX) proteins are involved in gene silencing to function as oncogenes or tumor suppressors through the polycomb repressive complex (PRC1). CBX4 has been implicated in the progression of human cancers, but its role and clinical significance in breast cancer remain unclear. Here, we show that CBX4 is up-regulated in breast cancer and exerts oncogenic activities via miR-137-mediated activation of Notch1 signaling pathway. CBX4 expression was increased in breast cancer, compared with the nontumorous tissues...
December 8, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29228832/nadph-oxidase-4-mediates-ros-production-in-radiation-induced-senescent-cells-and-promotes-migration-of-inflammatory-cells
#13
Yuri Sakai, Tohru Yamamori, Yoji Yoshikawa, Tomoki Bo, Motofumi Suzuki, Kumiko Yamamoto, Tetsuro Ago, Osamu Inanami
Excessive DNA damage induced by ionizing radiation (IR) to normal tissue cells is known to trigger cellular senescence, a process termed stress-induced premature senescence (SIPS). SIPS is often accompanied by the production of reactive oxygen species (ROS), and this is reported to be important for the initiation and maintenance of SIPS. However, the source of ROS during SIPS after IR and their significance in radiation-induced normal tissue damage remain elusive. In the present study, we tested the hypothesis that the NADPH oxidase (NOX) family of proteins mediates ROS production in SIPS-induced cells after IR and plays a role in SIPS-associated biological events...
December 12, 2017: Free Radical Research
https://www.readbyqxmd.com/read/29228608/expression-of-mir-195-is-associated-with-chemotherapy-sensitivity-of-cisplatin-and-clinical-prognosis-in-gastric-cancer
#14
Rui Ye, Bo Wei, Sheng Li, Wei Liu, Juntao Liu, Luan Qiu, Xuan Wu, Zhifei Zhao, Jianxiong Li
Gastric cancer has higher morbidity and mortality than other cancers for the low diagnosis rate and few therapies. MiR-195 has been reported to be involved in the occurrence, development and prognosis of various cancers. However, the function of miR-195 in gastric cancer remains largely unknown. Herein, the aims of this study were to probe the functional mechanism of miR-195 and its chemotherapy sensitivity as well as clinical prognosis in gastric cancer. We screened out low-expressed miR-195 through microarray analysis and further confirmed miR-195 was widely down-regulated in gastric cancer cells...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29226086/fibroblasts-promote-the-collective-invasion-of-ameloblastoma-tumor-cells-in-a-3d-coculture-model
#15
Takao Fuchigami, Hirofumi Koyama, Michiko Kishida, Yoshiaki Nishizawa, Mikio Iijima, Toshiro Kibe, Masahiro Ueda, Tohru Kiyono, Yoshimasa Maniwa, Norifumi Nakamura, Shosei Kishida
Ameloblastoma is a benign tumor of the odontogenic epithelium with several histological subtypes. All subtypes of ameloblastoma contain abundant stroma; the tumor cells invade collectively into the surrounding tissues without losing intratumor cell attachments. However, the molecular mechanisms mediating ameloblastoma invasion remain unclear. Here, we evaluated the functional significance of the interactions between ameloblastoma tumor cells and stromal fibroblasts on collective cellular invasion using a three-dimensional cultivation method, double-layered collagen gel hemisphere (DL-CGH) culture...
December 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/29225664/load-balancing-for-multi-threaded-pdes-of-stochastic-reaction-diffusion-in-neurons
#16
Zhongwei Lin, Carl Tropper, Yiping Yao, Robert A Mcdougal, Mohammand Nazrul Ishlam Patoary, William W Lytton, Michael L Hines
Stochastic simulation of chemical reactions and diffusion in a neuron helps to provide a realistic view of the molecular dynamics within a neuron. We developed a multi-threaded PDES simulator, Neuron Time Warp-Multi Thread, suitable for the stochastic simulation of reaction and diffusion in a neuron. In this paper we make use of Q-Learning and Simulated Annealing to determine the parameters for a dynamic load balancing algorithm and for dynamic window control. During the simulation, the runtime statistics of each thread are collected and used to determine the execution time of the simulation...
August 2017: Journal of Simulation: JOS
https://www.readbyqxmd.com/read/29223010/pelvic-abscess-complicating-sigmoid-colon-perforation-by-migrating-intrauterine-device-a-case-report-and-review-of-the-literature
#17
Omar Toumi, Houssem Ammar, Abdessalem Ghdira, Amine Chhaidar, Wided Trimech, Rahul Gupta, Randa Salem, Jamel Saad, Ibtissem Korbi, Mohamed Nasr, Faouzi Noomen, Mondher Golli, Khadija Zouari
INTRODUCTION: Intrauterine devices (IUDs) are commonly used as a contraceptive method. However, they may cause rare but potentially serious complications such as migration through the uterine wall and gastrointestinal perforation. PRESENTATION OF CASE: We report a case of a 26-year woman, carrying an IUD for 2 years, who presented to the emergency with pelvic pain with breakthrough bleeding. Abdominal imaging revealed the presence of two devices the first of which was located in the uterine cavity and the other in the wall of the sigmoid colon associated with a 5-centimeter pelvic collection...
October 27, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29222745/mir-26a-functions-as-a-tumor-suppressor-in-ambient-particulate-matter-bound-metal-triggered-lung-cancer-cell-metastasis-by-targeting-lin28b-il6-stat3-axis
#18
Yan-Yang Lu, Yi Lin, Dong-Xiao Ding, Shu Su, Qiao-Qiao Chi, You-Chi Zhang, Jian Sun, Xu Zhang, Hui-Min Zhu, Qian-Sheng Huang, Yu-Lang Chi, Guo-Zhu Ye, Shu Tao, Si-Jun Dong
Exposure to ambient particulate matter (PM) has been linked to the increasing incidence and mortality of lung cancer, but the principal toxic components and molecular mechanism remain to be further elucidated. In this study, human lung adenocarcinoma A549 cells were treated with serial concentrations of water-extracted PM10 (WE-PM10) collected from Beijing, China. Our results showed that exposure to 25 and 50 μg/ml of WE-PM10 for 48 h significantly suppressed miR-26a to upregulate lin-28 homolog B (LIN28B), and in turn activated interleukin 6 (IL6) and signal transducer and activator of transcription 3 (STAT3) in A549 cells, subsequently contributing to enhanced epithelial-mesenchymal transition and accelerated migration and invasion...
December 8, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/29221121/tropomyosin-isoform-tpm2-1-regulates-collective-and-amoeboid-cell-migration-and-cell-aggregation-in-breast-epithelial-cells
#19
HyeRim Shin, Dayoung Kim, David M Helfman
Metastasis dissemination is the result of various processes including cell migration and cell aggregation. These processes involve alterations in the expression and organization of cytoskeletal and adhesion proteins in tumor cells. Alterations in actin filaments and their binding partners are known to be key players in metastasis. Downregulation of specific tropomyosin (Tpm) isoforms is a common characteristic of transformed cells. In this study, we examined the role of Tpm2.1 in non-transformed MCF10A breast epithelial cells in cell migration and cell aggregation, because this isoform is downregulated in primary and metastatic breast cancer as well as various breast cancer cell lines...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29219852/dietary-crocin-reverses-melanoma-metastasis
#20
Hamid A Bakshi, Faruck Lukmanul Hakkim, Smitha Sam, Farideh Javid
Crocus sativus and its bioactive constituent crocin are well known for anti-tumor potential in different models. However, the efficacy of crocin on in-vivo melanoma metastasis is not yet reported. In this study, melanoma metastatic model was developed by tail vein injection of B16F-10 cells in to C57BL/6 mice. Metastatic mice treated with two different doses of crocin (250 and 500 µg/kg of bodyweight) for 10 days and parameters such as lung metastasis inhibition, mean survival time, lung hydroxyproline, uronic acid and hexosamine levels were analyzed after 21 days of treatment...
November 1, 2017: Journal of Biomedical Research
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