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e_cadherin expression of gastric cancer

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https://www.readbyqxmd.com/read/28435292/reg3a-promotes-the-proliferation-migration-and-invasion-of-gastric-cancer-cells
#1
Zhou-Feng Chen, Zhi-Ming Huang, Hai-Bo Xue, Xiu-Qing Lin, Ren-Ping Chen, Meng-Jun Chen, Rui-Fang Jin
The mechanism underlying the metastasis of gastric cancer (GC) cells remains elusive. REG3A is considered an oncogene in various cancers, but in GC its role is unclear. Here, we report that the expression of REG3A was significantly increased in the tumor tissues of patients with GC compared with the matched normal tissues. Knockdown of REG3A induced by specific small interfering RNA (siRNA) significantly repressed the proliferation of GC cells for 24 h or 48 h. Moreover, knockdown of REG3A significantly suppressed the migration, invasion, and adhesion of GC cells in vitro...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28412752/clinicopathologic-implications-of-immune-classification-by-pd-l1-expression-and-cd8-positive-tumor-infiltrating-lymphocytes-in-stage-ii-and-iii-gastric-cancer-patients
#2
Jiwon Koh, Chan-Young Ock, Jin Won Kim, Soo Kyung Nam, Yoonjin Kwak, Sumi Yun, Sang-Hoon Ahn, Do Joong Park, Hyung-Ho Kim, Woo Ho Kim, Hye Seung Lee
We co-assessed PD-L1 expression and CD8+ tumor-infiltrating lymphocytes in gastric cancer (GC), and categorized into 4 microenvironment immune types. Immunohistochemistry (PD-L1, CD8, Foxp3, E-cadherin, and p53), PD-L1 mRNA in situ hybridization (ISH), microsatellite instability (MSI), and EBV ISH were performed in 392 stage II/III GCs treated with curative surgery and fluoropyrimidine-based adjuvant chemotherapy, and two public genome databases were analyzed for validation. PD-L1+ was found in 98/392 GCs (25...
February 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28388558/expression-of-estrogen-receptors-and-androgen-receptor-and-their-clinical-significance-in-gastric-cancer
#3
Wenbo Tang, Rujiao Liu, Yan Yan, Xiaoli Pan, Minjun Wang, Xiaotian Han, Hui Ren, Zhe Zhang
Despite the mounting studies exploring the role of estrogen receptor alpha (ERα), estrogen receptor beta (ERβ) and androgen receptor (AR) in gastric cancer (GC), there remain controversies in those findings. The present study investigated the expression of ERα, ERβ and AR in Chinese gastric cancer by immunohistochemistry, analyzed their clinical relevance in gastric cancer, and examined the potential mechanisms by which ERα and AR modulated GC progression. The positive rate of ERα, ERβ and AR in GC tissues was 6% (9/150), 93...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28381163/protocadherin-7-inhibits-cell-migration-and-invasion-through-e-cadherin-in-gastric-cancer
#4
Hong-Fang Chen, Ran-Ran Ma, Jun-Yi He, Hui Zhang, Xiao-Ling Liu, Xiang-Yu Guo, Peng Gao
The protocadherin 7 is a member of the protocadherin family that expressed aberrantly in many types of human cancers. However, its expression, function, and underlying mechanisms are little known in gastric cancer. In this study, we detected protocadherin 7 expression in gastric cancer tissues and non-tumorous gastric mucosa tissues by real-time quantitative polymerase chain reaction and immunohistochemistry. The association of protocadherin 7 expression with the clinicopathological characteristics and the prognosis was subsequently analyzed...
April 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28338646/type-iv-secretion-and-signal-transduction-of-helicobacter-pylori-caga-through-interactions-with-host-cell-receptors
#5
REVIEW
Steffen Backert, Nicole Tegtmeyer
Helicobacter pylori is a highly successful human bacterium, which is exceptionally equipped to persistently inhabit the human stomach. Colonization by this pathogen is associated with gastric disorders ranging from chronic gastritis and peptic ulcers to cancer. Highly virulent H. pylori strains express the well-established adhesins BabA/B, SabA, AlpA/B, OipA, and HopQ, and a type IV secretion system (T4SS) encoded by the cag pathogenicity island (PAI). The adhesins ascertain intimate bacterial contact to gastric epithelial cells, while the T4SS represents an extracellular pilus-like structure for the translocation of the effector protein CagA...
March 24, 2017: Toxins
https://www.readbyqxmd.com/read/28276823/the-role-of-malat-1-in-the-invasion-and-metastasis-of-gastric-cancer
#6
Di Chen, Lili Liu, Kai Wang, Haiyan Yu, Yafang Wang, Jiaming Liu, Yang Guo, Hongbo Zhang
OBJECTIVES: The long non-coding RNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT-1) has been reported to be over-expressed in several cancer types. However, its role in gastric cancer (GC) remains unclear. In the present study, we examined the expression of MALAT-1 in GC cells and tissues and explored its role in GC cell migration and invasion. MATERIALS AND METHODS: Real-time quantitative polymerase chain reaction (qRT-PCR) was used to analyze the expression level of MALAT-1 in six GC cell lines and 20 gastric tissues (20 GC and 20 adjacent normal mucosa)...
June 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28276310/basic-transcription-factor-3-is-required-for-proliferation-and-epithelial-mesenchymal-transition-via-regulation-of-foxm1-and-jak2-stat3-signaling-in-gastric-cancer
#7
De-Zhong Zhang, Bing-He Chen, Lan-Fang Zhang, Ming-Kun Cheng, Xiang-Jie Fang, Xin-Jun Wu
Gastric cancer (GC) is the most common epithelial malignancy worldwide. Basic transcription factor 3 (BTF3) plays a crucial role in the regulation of various biological processes. We designed experiments to investigate the molecular mechanism underlying the role of BTF3 in GC cell proliferation and metastasis. We confirmed that BTF3 expression was decreased in GC tissues and several GC cell lines. Lentivirus-mediated downregualtion of BTF3 reduced cell proliferation, induced S and G2/M cell cycle arrest, and increased apoptosis...
March 8, 2017: Oncology Research
https://www.readbyqxmd.com/read/28269747/microrna-203-suppresses-invasion-of-gastric-cancer-cells-by-targeting-erk1-2-slug-e-cadherin-signaling
#8
Jiangdong Du, Shijie Wang, Fuchun Jing, Jiang Zhan, Yunhui Wang
BACKGROUND AND AIMS: Growing evidence suggests that microRNA plays an essential role in the development and metastasis of many tumors, including gastric cancer (GC). Expression of microRNA-203 (miR-203) has been reported to decrease in GC. In addition, overexpression of miR-203 inhibits grow of GC cells in vitro and in vivo. However, whether miR-203 affects cell migration and invasion of GC remains unclear. This study aimed to reveal the role of miR-203 on migration and invasion of GC, and its potential mechanisms...
February 27, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28260026/ube2c-induces-emt-through-wnt-%C3%AE-%C3%A2-catenin-and-pi3k-akt-signaling-pathways-by-regulating-phosphorylation-levels-of-aurora-a
#9
Rui Wang, Yue Song, Xi Liu, Qixue Wang, Yunfei Wang, Liwei Li, Chunsheng Kang, Qingyu Zhang
The ubiquitin-conjugating enzyme 2C (UBE2C) is the key component in the ubiquitin proteasome system (UPS) by partnering with the anaphase‑promoting complex (APC/C). A high UBE2C protein expression level has been reported in various types of human tumors. However, little is known about the precise mechanism by which UBE2C expression is downregulated in gastric cancer. We found in MGC‑803 and SGC‑7901 gastric cancer cells UBE2C‑deficient G2/M phase arrest in the cell cycle and subsequently decreased gastric adenocarcinoma tumorigenesis...
April 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28247164/clinical-significance-of-altering-epithelial-mesenchymal-transition-in-metastatic-lymph-nodes-of-gastric-cancer
#10
Keishi Okubo, Yoshikazu Uenosono, Takaaki Arigami, Shigehiro Yanagita, Daisuke Matsushita, Takashi Kijima, Masahiko Amatatsu, Yasuto Uchikado, Yuko Kijima, Kosei Maemura, Shoji Natsugoe
BACKGROUND: The E-cadherin, N-cadherin, and Snail genes are epithelial-mesenchymal transition (EMT)-inducible genes. Previous studies demonstrated that the expression of EMT markers in the primary tumor sites of gastric cancer correlates with tumor progression and prognosis. However, the clinical significance of the expression of these EMT markers in metastatic lymph nodes remains unclear. In the present study, we investigated the expression of these EMT markers in the primary tumor sites and metastatic lymph nodes...
February 28, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28241766/luteolin-suppresses-gastric-cancer-progression-by-reversing-epithelial-mesenchymal-transition-via-suppression-of-the-notch-signaling-pathway
#11
Ming-de Zang, Lei Hu, Zhi-Yuan Fan, He-Xiao Wang, Zheng-Lun Zhu, Shu Cao, Xiong-Yan Wu, Jian-Fang Li, Li-Ping Su, Chen Li, Zheng-Gang Zhu, Min Yan, Bing-Ya Liu
BACKGROUND: Gastric cancer (GC) is one of the most malignant tumors and the second leading cause of cancer-related deaths in the world. Luteolin, a flavonoid present in many fruits and green plants, suppresses cancer progression. The effects of luteolin on GC cells and their underlying mechanisms remain unclear. METHODS: Effects of luteolin on cell proliferation, migration, invasion, and apoptosis were examined in vitro and in vivo by cell counting kit-8 (CCK-8), transwell assays, and flow cytometry, respectively...
February 27, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28209205/long-noncoding-agap2-as1-is-activated-by-sp1-and-promotes-cell-proliferation-and-invasion-in-gastric-cancer
#12
Fuzhen Qi, Xianghua Liu, Hao Wu, Xiang Yu, Chenchen Wei, Xiaodan Huang, Guozhong Ji, Fengqi Nie, Keming Wang
BACKGROUND: Long noncoding RNAs (lncRNAs) have emerged as important regulators of tumorigenesis and cancer progression. Recently, the lncRNA AGAP2-AS1 was identified as an oncogenic lncRNA in human non-small cell lung cancer (NSCLC) and its elevated expression was linked to NSCLC development and progression. However, the expression pattern and molecular mechanism of AGAP2-AS1 in gastric cancer (GC) have not been characterized. METHODS: Bioinformatic analysis was performed to determine AGAP2-AS1 expression levels in the GC and normal tissues using gene profiling data from the Gene Expression Omnibus...
February 16, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28132880/pseudolaric-acid-b-inhibits-gastric-cancer-cell-metastasis-in-vitro-and-in-haematogenous-dissemination-model-through-pi3k-akt-erk1-2-and-mitochondria-mediated-apoptosis-pathways
#13
Dan Wang, Yan Xin, Yanqiu Tian, Wenhui Li, Dan Sun, Yi Yang
Pseudolaric acid B (PAB) is the major bioactive constituent in the root bark of Pseudolarix kaempferi and has been reported to have cytotoxicity against tumor cells. Our in vivo experiments showed that PAB could inhibit gastric cancer cell lung metastasis in a nude mouse haematogenous dissemination model. To evaluate the anti-metastasis mechanism of PAB in gastric cancer cells, cytological experiments were performed. The results showed that PAB could inhibit the adhesion ability to matrigel, migration, invasion and colony formation ability of BGC-823 and MKN-45 cells...
March 1, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28130110/tnf-%C3%AE-inducing-protein-of-helicobacter-pylori-induces-epithelial-mesenchymal-transition-emt-in-gastric-cancer-cells-through-activation-of-il-6-stat3-signaling-pathway
#14
Guodong Chen, Na Tang, Chao Wang, Linqiao Xiao, Minjun Yu, Lanhua Zhao, Hengling Cai, Liang Han, Chengyuan Xie, Yan Zhang
Tumor necrosis factor (TNF)-α-inducing protein (Tipα) is a newly identified carcinogenic factor secreted by Helicobacter pylori (H. pylori). Although it has been proved that Tipα is a strong inducer of epithelial-mesenchymal transition (EMT), a crucial process of migration, the exact molecular mechanism is unknown. Current evidence indicates that the oncogenic transcription factor signal transducers and activators of transcription 3 (STAT3) is inappropriately activated in multiple malignancies, including gastric cancer...
January 24, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28128310/droplet-based-microtumor-model-to-assess-cell-ecm-interactions-and-drug-resistance-of-gastric-cancer-cells
#15
Minjeong Jang, Ilkyoo Koh, Seok Jae Lee, Jae-Ho Cheong, Pilnam Kim
Gastric cancer (GC) is a common aggressive malignant tumor with high incidence and mortality worldwide. GC is classified into intestinal and diffuse types according to the histo-morphological features. Because of distinctly different clinico-pathological features, new cancer therapy strategies and in vitro preclinical models for the two pathological variants of GC is necessary. Since extracellular matrix (ECM) influence the biological behavior of tumor cells, we hypothesized that GC might be more similarly modeled in 3D with matrix rather than in 2D...
January 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28096693/gastric-and-colon-metastasis-from-breast-cancer-case-report-review-of-the-literature-and-possible-underlying-mechanisms
#16
J Carlos Villa Guzmán, J Espinosa, R Cervera, M Delgado, R Patón, J M Cordero García
Gastrointestinal metastases from breast cancer are not common. We present a 58-year-old female diagnosed with lobular breast cancer some years before whose relapses were gastric and colonic mucosal. Simultaneous metastases are extremely rare. To our knowledge, no cases of initial dual affectation have been reported. The patient also showed gastritis by Helicobacter pylori. Invasive lobular breast carcinoma is the most frequent special type of breast cancer and carries some specific molecular alterations such as loss of expression of E-cadherin...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28091828/liver-x-receptor-%C3%AE-lxr%C3%AE-promoted-invasion-and-emt-of-gastric-cancer-cells-by-regulation-of-nf-%C3%AE%C2%BAb-activity
#17
Linhua Ji, Bin Zhang, Gang Zhao
Aberrant expression of Liver X receptor α (LXRα) has been frequently reported in various types of cancers excluding gastric cancer (GC). Moreover, the role of LXRα in human GC has not been previously reported. In this study, we investigated the effect of LXRα down-regulation on invasion and EMT of GC. The expression of LXRα in GC cell lines was detected by real-time PCR. The LXRα siRNA was transiently transfected into GC cells using Lipofectamine™ 2000 reagent. Subsequently, cell invasive ability was evaluated by Transwell assays...
April 2017: Human Cell
https://www.readbyqxmd.com/read/28081541/circular-rna-0000096-affects-cell-growth-and-migration-in-gastric-cancer
#18
Peifei Li, Huilin Chen, Shengcan Chen, Xiaoyan Mo, Tianwen Li, Bingxiu Xiao, Rui Yu, Junming Guo
BACKGROUND: Circular RNAs (circRNAs) are a class of non-coding RNAs broadly expressed in cells of various species. Their role in cancers, especially in gastric cancer, is poorly understood. METHODS: Circular RNA 0000096 (hsa_circ_0000096) levels in 101 paired gastric cancer tissues and adjacent non-tumorous tissues from patients with gastric cancer were detected by real-time quantitative reverse transcription-polymerase chain reaction. A receiver operating characteristic curve was generated to evaluate the diagnostic value of hsa_circ_0000096...
February 28, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28077118/malat1-promoted-invasiveness-of-gastric-adenocarcinoma
#19
Na Keum Lee, Jung Hwa Lee, Cristina Ivan, Hui Ling, Xinna Zhang, Chan Hyuk Park, George A Calin, Sang Kil Lee
BACKGROUND: Gastric cancer is the second leading cause of cancer globally, and the mechanism of its pathogenesis is still largely unknown. Recently, non-coding RNAs have been recognized to promote metastasis in various cancers, including gastric cancer. METHODS: We found that metastasis associated lung adenocarcinoma transcript-1 (MALAT1) is upregulated in gastric cancer tissue compared to adjacent normal tissue, as determined by microarray and subsequent qRT-PCR, then investigated the impact of MALAT1 on apoptosis, cell proliferation, and the cell cycle to dissect the carcinogenesis of gastric cancer, and examined mechanisms of invasion and metastasis...
January 11, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28076840/hif-1%C3%AE-induces-the-epithelial-mesenchymal-transition-in-gastric-cancer-stem-cells-through-the-snail-pathway
#20
Shi-Wei Yang, Zhi-Gang Zhang, Ying-Xue Hao, Yong-Liang Zhao, Feng Qian, Yan Shi, Ping-Ang Li, Chun-Yang Liu, Pei-Wu Yu
Substantial evidence suggests that the epithelial-mesenchymal transition (EMT) phenotype is associated with the invasive characteristics of cancer stem cells (CSCs),which possess an EMT phenotype that may predominate in tumor invasion and metastasis. However, the mechanisms for the generation and regulation of these CSCs have not been clearly defined. As hypoxia and EMT-related factors may have important functions in EMT-like CSCs, the aim of this study was to investigate the effects of hypoxia on these cells...
February 7, 2017: Oncotarget
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