Aberrantly Expressed Recoverin in Tumor Tissues from Gastric Cancer Patients

2003 ◽  
pp. 173-176
Author(s):  
Yasuhiro Miyagawa ◽  
Hiroshi Ohguro ◽  
Ikuyo Maruyama ◽  
Yoshiko Takano ◽  
Hitoshi Yamazaki ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Cancer Patients ◽  
Tumor Tissues ◽  
Gastric Cancer Patients

scholarly journals Down-regulation of HIF-1α inhibits the proliferation, migration, and invasion of gastric cancer by inhibiting PI3K/AKT pathway and VEGF expression

2018 ◽  
Vol 38 (6) ◽  
Author(s):  
Jingjing Zhang ◽  
Jun Xu ◽  
Yonghong Dong ◽  
Bo Huang
Keyword(s):  
Gastric Cancer ◽  
Cancer Cells ◽  
Cancer Patients ◽  
Akt Pathway ◽  
Migration And Invasion ◽  
Vegf Expression ◽  
Gastric Cancer Cells ◽  
Tumor Tissues ◽  
Sirna Silencing ◽  
Gastric Cancer Patients

In view of the high incidence of gastric cancer and the functions of hypoxia-inducible factor 1α (HIF-1α), our study aimed to investigate the functionality of HIF-1α in gastric cancer, and to explore the diagnostic and prognostic values of HIF-1α for this disease. Expression of HIF-1α in tumor tissues and adjacent healthy tissues as well as serum collected from both gastric cancer patients and normal healthy controls was detected by qRT-PCR. Survival analysis was performed using Kaplan–Meier method. HIF-1α siRNA silencing cell lines were established. Effects of HIF-1α siRNA silencing as well as PI3K activator sc3036 on proliferation, migration, and invasion of gastric cancer cells were detected by Cell counting kit (CCK-8) assay, and Transwell migration and invasion assay. Effects of HIF-1α siRNA silencing on AKT and VEGF were detected by Western blot. Expression of HIF-1α was significantly down-regulated in tumor tissues than in adjacent healthy tissues in most gastric cancer patients. Serum levels of HIF-1α were also higher in gastric cancer patients than in normal healthy people. Serum HIF-1α showed promising diagnostic and prognostic values for gastric cancer. HIF-1α siRNA silencing inhibited the proliferation, migration, and invasion of gastric cancer cells, while PI3K activator sc3036 treatment reduced those inhibitory effects. Down-regulation of HIF-1α can inhibit the proliferation, migration, and invasion of gastric cancer possibly by inhibiting PI3K/AKT pathway and VEGF expression.

scholarly journals High Expression of Nucleobindin-2 Is Associated With Poor Prognosis in Gastric Cancer

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. A1021-A1021
Author(s):  
Junichi Okada ◽  
Eijiro Yamada ◽  
Tsugumichi Saito ◽  
Yasuyo Nakajima ◽  
Atsushi Ozawa ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Cancer Patients ◽  
Leucine Zipper ◽  
Independent Predictor ◽  
Clinical Stage ◽  
High Expression ◽  
Peripheral Tissues ◽  
Tumor Tissues ◽  
Gastric Cancer Patients ◽  
Cancer Tissues

Abstract Nucleobindin-2 (NUCB2) is a 396-amino acid protein, cleaved into the N-terminal nesfatin-11-82, nesfatin-285-163 and the C-terminal nesfatin-3166-396. NUCB2 contains a signal peptide, a leucine zipper structure, two Ca2+ binding EF-hand domains, and has a wide variety of basic cellular functions. NUCB2 is also a precursor protein of nesfatin-1, which was originally identified in hypothalamic nuclei, and which is a regulatory factor involved in the central control of food intake and energy balance. There are several reports indicating that NUCB2 is also expressed in various human peripheral tissues. Moreover, recent studies have reported that high levels of NUCB2 mRNA and protein are a potent prognostic factor for prostate cancer, endometrial carcinoma, and breast cancer. NUCB2 was also identified as a potential tumor antigen eliciting autoantibody responses in 5.4% of gastric cancer patients but not in the healthy individuals. However, theclinicopathological significance of NUCB2 expression in gastric cancer has still not been elucidated. Therefore, we examined NUCB2 expression in a large number of gastric cancer patients, using immunohistochemistry, to explore its clinicopathological significance. To explore this, we aimed to investigate the NUCB2 expression in gastric cancer tissues and adjacent non-tumor tissues and its potential relevance to clinicopathological factors and prognosis using immunohistochemistry analysis. In our study, NUCB2 level in gastric cancer tissues was higher than in non-tumor tissues. A high expression of NUCB2 is significantly associated with tumor depth, lymph node metastasis, lymphatic invasion, venous invasion and clinical stage. Furthermore, the expression level of NUCB2 protein was independent predictor of progression-free survival. In summary, NUCB2 might play a crucial role in gastric cancer development and could serve as an independent predictor of prognosis of gastric cancer patients.

Metabolomic discrimination of intestinal- and diffuse-type gastric cancer tissues using capillary electrophoresis time-of-flight mass spectrometry.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e14635-e14635
Author(s):  
Masanori Terashima ◽  
Masatoshi Kusuhara ◽  
Masanori Tokunaga ◽  
Yutaka Tanizawa ◽  
Etsuro Bando ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gastric Cancer ◽  
Capillary Electrophoresis ◽  
Cancer Patients ◽  
Time Of Flight ◽  
Diffuse Type ◽  
Flight Mass Spectrometry ◽  
Tumor Tissues ◽  
Gastric Cancer Patients ◽  
Diffuse Type Gastric Cancer

e14635 Background: Clinicopathological characteristics of gastric cancer patients strongly depend on histological type. In contrast with gene and protein expressions, metabolic properties of intestinal- and diffuse-type gastric cancer have been largely unknown. Here, we conducted metabolome analysis of paired non-tumor and tumor gastric tissues by using capillary electrophoresis and liquid chromatography combined with time-of-flight mass spectrometry (CE- and LC-TOFMS, respectively) in order to metabolomically characterize non-tumors (NTs), intestinal-type tumors (ITs), and diffuse-type tumors (DTs). Methods: Tumor and surrounding non-tumor tissues were surgically excised pair-wise from 27 gastric cancer patients (18 ITs and 9 DTs) who underwent gastrectomy at our institution between February and May 2011. Following tissue homogenization and metabolite extraction, we measured 254 and 138 metabolites, respectively, by CE-TOFMS and LC-TOFMS. Results: Metabolomic profiles of tumor tissues, especially ITs, were well-distinguished from those of NTs: Lactate and most glycolytic intermediate levels in ITs were significantly higher than those in NTs, which reaffirms the Warburg effect of cancer, but the significance was lesser in DTs. Levels of all the measured amino acids were significantly higher in ITs and relatively higher in DTs than in NTs, showing high capacities of cancer cells for protein synthesis. Although levels of ATP, GTP, and energy charge in ITs and DTs were lower than those in NTs, purine contents were rather higher in the tumors than in NTs, which may support their high demand for DNA replication. Moreover, reduced glutathione in DTs were the lowest among others, implying their potential vulnerability against oxidative stress. Conclusions: Metabolomic profiles of NTs, ITs, and DTs were discriminated by CE- and LC-TOFMS analyses: Considerably high lactate, amino acid, and purine levels highlighted the metabolome of tumors, especially of ITs. Relatively low energy and redox statuses of DTs, however, could be targeted for developing more effective cancer therapeutics.

Endoscopic ultrasound in restaging and predicting pathological response for advanced gastric cancer patients after neoadjuvant chemotherapy

Endoscopy ◽  
2011 ◽  
Vol 43 (S 03) ◽  
Author(s):  
Tao Guo ◽  
Fang Yao ◽  
Ai-Ming Yang ◽  
Dong-Sheng Wu ◽  
Xi Wu ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Neoadjuvant Chemotherapy ◽  
Advanced Gastric Cancer ◽  
Cancer Patients ◽  
Endoscopic Ultrasound ◽  
Pathological Response ◽  
Gastric Cancer Patients

Relationship between Topoisomerase II Alpha Overexpression and Prognosis in Chinese Gastric Cancer Patients

2017 ◽  
Vol 36 (3) ◽  
pp. 207-216 ◽  
Author(s):  
Fangchao Zheng ◽  
Jiuda Zhao ◽  
Feng Du ◽  
Junhui Zhao ◽  
Guoshuang Shen ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Cancer Patients ◽  
Topoisomerase Ii ◽  
Topoisomerase Ii Alpha ◽  
Gastric Cancer Patients

CLINICAL SIGNIFICANCE OF SERUM CAVEOLIN-1 LEVELS IN GASTRIC CANCER PATIENTS

2018 ◽  
Vol 40 (4) ◽  
pp. 323-327 ◽  
Author(s):  
F Tas ◽  
S Karabulut ◽  
K Erturk ◽  
D Duranyildiz
Keyword(s):  
Gastric Cancer ◽  
Cancer Patients ◽  
Histological Grade ◽  
Clinical Importance ◽  
Disease Stage ◽  
Control Group ◽  
Tissue Samples ◽  
Caveolin 1 ◽  
Study Results ◽  
Gastric Cancer Patients

Aim: Caveolin-1 plays a significant role in the pathogenesis of various carcinomas and its expression affects the survival of cancer patients. However, the molecular function of caveolin-1 and its possible clinical importance has remained uncertain in gastric cancer. No clinical trial has examined serum caveolin-1 levels in gastric cancer patients so far, instead all available results were provided from studies conducted on tissue samples. In the current study, we analyzed the soluble serum caveolin-1 levels in gastric cancer patients, and specified its associations with the clinical factors and prognosis. Material and Methods: Sixty-three patients with pathologically confirmed gastric cancer were enrolled into the trial. Serum caveolin-1 concentrations were detected by ELISA method. Thirty healthy subjects were also included in the study. Results: The median age of patients was 62 years, ranging from 28 to 82 years. The serum caveolin-1 levels in gastric cancer patients were significantly higher than those in control group (p < 0.001). The common clinical parameters including patient age, sex, lesion localization, histopathology, histological grade, disease stage, and various serum tumor markers (e.g. LDH, CEA, and CA 19.9) were not found to be associated with serum caveolin-1 levels (p > 0.05). Similarly, no correlation existed between serum caveolin-1 concentration and chemotherapy responsiveness (p = 0.93). Furthermore, serum caveolin-1 level was not found to have a prognostic role (p = 0.16). Conclusion: Even though it is neither predictive nor prognostic, serum caveolin-1 level may be a valuable diagnostic indicator in patients with gastric cancer. Key

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