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https://www.readbyqxmd.com/read/29344744/interleukin-1-receptor-antagonist-inhibits-angiogenesis-in-gastric-cancer
#1
Zhenqiang Gong, Jiachi Ma, He Su, Tiankang Guo, Hui Cai, Quan Chen, Xiaodan Zhao, Jianbo Qi, Jianbo Du
BACKGROUND: Interleukin-1 alpha (IL-1α) plays an important role in tumorigenesis and angiogenesis of gastric cancer. The interleukin-1 receptor antagonist (IL-1RA) inhibits IL-1 selectively and specifically through IL-1R type I (IL-1RI). However, the underlying mechanism by which IL-1RA modulates the interactions of tumor cells and their micro-environment is poorly understood. We have evaluated the role of IL-1RA in the metastatic process as well as the mutual or reciprocal actions between gastric cancer cells and stromal cells...
January 17, 2018: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29344215/mir-203a-suppresses-cell-proliferation-by-targeting-e2f-transcription-factor-3-in-human-gastric-cancer
#2
Huiqin Yang, Lixia Wang, Xiaoli Tang, Wenmei Bai
MicroRNAs (miRs) are a class of short non-coding RNAs that serve an essential role in the tumorigenesis of gastric cancer (GC). MiR-203a has been reported as a tumor repressor in various types of human cancer. In the present study, the function of miR-203a on the proliferation of GC cells was investigated. Bioinformatics analyses revealed that miR-203a targets the 3'-untranslated region of E2F transcription factor 3 (E2F3) messenger RNA. A luciferase reporter assay and western blot analysis were performed to confirm whether E2F3 was a target of miR-203a...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29344144/melanoma-differentiation-associated-gene-7-suppresses-human-gastric-cancer-cell-invasion-and-migration
#3
Li Xu, Jinyan Chen, Wei Lin, Jinkun Chen, Zhiwei Chen
Gastric cancer is one of the most common types of cancer in the world. Patients with gastric cancer often respond poorly to conventional chemotherapies, therefore more comprehensive therapy is required. Melanoma differentiation-associated gene-7 (MDA-7), also termed interleukin-24, is a potent tumor suppressor gene. Numerous studies have demonstrated that MDA-7 suppresses the growth and induces the apoptosis of cancer cells. In the present study, the MDA-7 gene was transfected into human gastric cancer AGS cells using adenovirus...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29343514/trpm2-channel-mediated-regulation-of-autophagy-maintains-mitochondrial-function-and-promotes-gastric-cancer-cell-survival-via-the-jnk-signaling-pathway
#4
Shekoufeh Almasi, Barry E Kennedy, Mariam El Aghil, Andra M Sterea, Shashi Gujar, Santiago Partida-Sánchez, Yassine El Hiani
A lack of effective treatment is one of the main factors contributing to gastric cancer-related death. Discovering effective targets and understanding their underlying anticancer mechanism is key to achieving the best response to treatment and to limiting side effects. Although recent studies have shown that the cation channel transient receptor potential melastatin-2 (TRPM2) is crucial for cancer cell survival, the exact mechanism remains unclear, limiting its therapeutic potential. Here, using molecular and functional assays, we investigated the role of TRPM2 in survival of gastric cancer cells...
January 17, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29339747/an-orthotopic-mouse-model-of-gastric-cancer-invasion-and-metastasis
#5
Rita A Busuttil, David S Liu, Natasha Di Costanzo, Jan Schröder, Catherine Mitchell, Alex Boussioutas
Gastric cancer is a leading cause of cancer death worldwide, with advanced stage being correlated to the level of tumour invasion and metastasis. Current research is heavily focused on the identification and development of efficacious therapeutics targeting these fundamental hallmarks of cancer, however there are currently no animal models that mimic the invasive phenotypes observed in humans. To address this we have developed an orthotopic mouse model whereby gastric cancer cell lines are tagged with luciferase and injected into the subserosal layer of the stomach...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29336829/what-don-t-we-know-about-bladder-control-and-why-does-it-matter-an-ags-nia-collaborative-conference-sought-answers-and-progress
#6
Debra Saliba
No abstract text is available yet for this article.
January 11, 2018: Geriatric Nursing
https://www.readbyqxmd.com/read/29333019/modulated-radiotherapy-with-concurrent-and-adjuvant-temozolomide-for-anaplastic-gliomas-indian-single-center-data
#7
Tejinder Kataria, Trinanjan Basu, Deepak Gupta, Shikha Goyal, Shahida Nasreen, Shyam S Bisht, Ashu Abhishek, Susovan Banerjee, Kushal Narang, Ajaya N Jha, Ishani Mohapatra, Jayesh A Modi
Objective: To evaluate early clinical outcome for anaplastic gliomas (AG) treated in the era of modulated radiotherapy (RT) and concurrent plus adjuvant temozolomide (TMZ) in an Indian setting. Materials and Methods: Fifty-three patients with AGs treated with modulated RT and concurrent (95%) and adjuvant TMZ (90%) were analyzed. About 80% of patients had Karnofsky performance status (KPS) at least 90 with 30% seizure at presentation. Postoperative magnetic resonance imaging was available in 65% cases and RT dose was 60 Gy in 30 fractions...
October 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/29327669/advanced-3d-models-culture-to-investigate-mesenchymal-stromal-cells-of-the-human-dental-follicle
#8
Nathalie Steimberg, Francesca Angiero, Davide Farronato, Angiola Berenzi, Gianguido Cossellu, Andrea Ottonello, Darnell Kaigler, Giovanna Mazzoleni
The human dental follicle (hDF) contains the developing tooth and is involved in regulating tooth maturation and eruption. To investigate the mesenchymal stromal cells of the dental follicle, two 3D culture models were used, based on a dynamic bioreactor: the Rotary Cell Culture System (RCCS) and the 3D culture of precursor cells isolated from follicular tissue (hDFCs). The hDFCs were obtained from impacted third molars of 20 patients. Two 3D culture models were tested. In the first model, intact hDF explants were cultured in 3D conditions, preserving the original tissue architecture; they were studied via histomorphological and molecular analyses...
January 12, 2018: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/29316541/decreased-ifit2-expression-promotes-gastric-cancer-progression-and-predicts-poor-prognosis-of-the-patients
#9
Lujun Chen, Wensi Zhai, Xiao Zheng, Quanqin Xie, Qi Zhou, Min Tao, Yibei Zhu, Changping Wu, Jingting Jiang
BACKGROUND/AIMS: The status of interferon (IFN) signaling pathway has been shown to be closely associated with the response of immune checkpoint blockade therapy against advanced human cancers. IFN-induced protein with tetratricopeptide repeats 2 (IFIT2), also known as IFN-stimulated gene 54 (ISG54), is one of the most highly responsive ISGs, which can inhibit the proliferation and migration of cancer cells, and regulate viral replication, resulting in anti-cancer and anti-viral effects...
December 22, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29311560/a-central-role-for-pi3k-akt-signaling-pathway-in-linking-samhd1-deficiency-to-the-type-i-interferon-signature
#10
Changhoon Oh, Jeongmin Ryoo, Kiwon Park, Baek Kim, Michele B Daly, DongYeon Cho, Kwangseog Ahn
The autoimmune disorder Aicardi-Goutières syndrome (AGS) is characterized by a constitutive type I interferon response. SAMHD1 possesses both dNTPase and RNase activities and mutations in SAMHD1 cause AGS; however, how SAMHD1-deficiency causes the type I interferon response in patients with AGS remains unknown. Here, we show that endogenous RNA substrates accumulated in the absence of SAMHD1 act as a major immunogenic source for the type I interferon response. Reconstitution of SAMHD1-negative human cells with wild-type but not RNase-defective SAMHD1 abolishes spontaneous type I interferon induction...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29311387/critical-interactions-between-immunogenic-cancer-cell-death-oncolytic-viruses-and-the-immune-system-define-the-rational-design-of-combination-immunotherapies
#11
REVIEW
Jacob P van Vloten, Samuel T Workenhe, Sarah K Wootton, Karen L Mossman, Byram W Bridle
Oncolytic viruses (OVs) are multimodal cancer therapeutics, with one of their dominant mechanisms being in situ vaccination. There is a growing consensus that optimal cancer therapies should generate robust tumor-specific immune responses. Immunogenic cell death (ICD) is a paradigm of cellular demise culminating in the spatiotemporal release of danger-associated molecular patterns that induce potent anticancer immunity. Alongside traditional ICD inducers like anthracycline chemotherapeutics and radiation, OVs have emerged as novel members of this class of therapeutics...
January 15, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29311386/dendritic-cell-based-cancer-vaccines
#12
REVIEW
Patricia M Santos, Lisa H Butterfield
Dendritic cells (DC) are specialized immune cells that play a critical role in promoting an immune response against Ags, which can include foreign pathogenic Ags and self-tumor Ags. DC are capable of boosting a memory T cell response but most importantly they are effective initiators of naive T cell responses. Many years of studies have focused on the use of DC vaccines against cancer to initiate and shape an antitumor-specific immune response and/or boost existing spontaneous antitumor T cell responses. In this study we give a brief overview of DC biology, function, and cellular subsets, and review the current status of the field of DC as cancer vaccines...
January 15, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29311380/hitting-the-target-how-t-cells-detect-and-eliminate-tumors
#13
REVIEW
Anthony E Zamora, Jeremy Chase Crawford, Paul G Thomas
The successes of antitumor immuno-based therapies and the application of next-generation sequencing to mutation profiling have produced insights into the specific targets of antitumor T cells. Mutated proteins have tremendous potential as targets for interventions using autologous T cells or engineered cell therapies and may serve as important correlates of efficacy for immunoregulatory interventions including immune checkpoint blockade. As mutated self, tumors present an exceptional case for host immunity, which has primarily evolved in response to foreign pathogens...
January 15, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29311379/a-believer-s-overview-of-cancer-immunosurveillance-and-immunotherapy
#14
REVIEW
Olivera J Finn
The field of tumor immunology has grown around the idea that one of the important roles of the immune system is to eliminate cancer. This idea was difficult to reconcile with the accepted notion that the immune system evolved to distinguish self from nonself and therefore tumors derived from self-tissues would not be recognized. Lack of appropriate animal models prevented experimental testing of cancer immunosurveillance. This changed with the realization that the immune system evolved to recognize danger and with the advent of mouse models deficient in one or more immune function, which showed predicted increases in susceptibility to cancer...
January 15, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29306955/downregulation-of-annexin-a11-anxa11-inhibits-cell-proliferation-invasion-and-migration-via-the-akt-gsk-3%C3%AE-pathway-in-gastric-cancer
#15
Kelei Hua, Yong Li, Qun Zhao, Liqiao Fan, Bibo Tan, Jianbin Gu
BACKGROUND Gastric cancer (GC) is one of the most common malignant tumors in the world and in China the incidence and mortality rates of gastric cancer are the second highest among all forms of cancer. Annexin A11 (ANXA11) is a member of the annexins family. Previous studies have shown that ANXA11 participates in many cellular functions and has significant influence on ovarian, breast, liver, and colorectal cancer. However, the expression and biological functions of ANXA11 in GC are still unknown. MATERIAL AND METHODS A total of 63 paired gastric cancer tissues and matched adjacent mucosa were used to measure the ANXA11 levels and its correlation with clinical characteristics...
January 7, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29303372/design-and-synthesis-of-novel-oridonin-analogues-as-potent-anticancer-agents
#16
Qing-Kun Shen, Zheng-Ai Chen, Hong-Jian Zhang, Jia-Li Li, Chuan-Feng Liu, Guo-Hua Gong, Zhe-Shan Quan
To identify anticancer agents with higher potency and lower toxicity, a series of oridonin derivatives with substituted benzene moieties at the C17 position were designed, synthesised, and evaluated for their antiproliferative properties. Most of the derivatives exhibited antiproliferative effects against AGS, MGC803, Bel7402, HCT116, A549, and HeLa cells. Compound 2p (IC50 = 1.05 µM) exhibited the most potent antiproliferative activity against HCT116 cells; it was more potent than oridonin (IC50 = 6...
December 2018: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/29299667/genetic-alterations-and-tumor-immune-attack-in-yo-paraneoplastic-cerebellar-degeneration
#17
Mathilde Small, Isabelle Treilleux, Coline Couillault, Daniel Pissaloux, Géraldine Picard, Sandrine Paindavoine, Valery Attignon, Qing Wang, Véronique Rogemond, Stéphanie Lay, Isabelle Ray-Coquard, Jacobus Pfisterer, Florence Joly, Andreas Du Bois, Dimitri Psimaras, Nathalie Bendriss-Vermare, Christophe Caux, Bertrand Dubois, Jérôme Honnorat, Virginie Desestret
Paraneoplastic cerebellar degenerations with anti-Yo antibodies (Yo-PCD) are rare syndromes caused by an auto-immune response against neuronal antigens (Ags) expressed by tumor cells. However, the mechanisms responsible for such immune tolerance breakdown are unknown. We characterized 26 ovarian carcinomas associated with Yo-PCD for their tumor immune contexture and genetic status of the 2 onconeural Yo-Ags, CDR2 and CDR2L. Yo-PCD tumors differed from the 116 control tumors by more abundant T and B cells infiltration occasionally organized in tertiary lymphoid structures harboring CDR2L protein deposits...
January 3, 2018: Acta Neuropathologica
https://www.readbyqxmd.com/read/29298833/production-of-il-17-by-mait-cells-is-increased-in-multiple-sclerosis-and-is-associated-with-il-7-receptor-expression
#18
Anne Willing, Jan Jäger, Stefanie Reinhardt, Nina Kursawe, Manuel A Friese
Multiple sclerosis (MS) is a T cell-driven inflammatory disease of the CNS. Research on T cell subsets involved in MS pathogenesis has mainly focused on classical CD4+ T cells, especially Th17 cells, as they produce the proinflammatory, MS-associated cytokine IL-17. However, the abundant unconventional mucosal-associated invariant T (MAIT) cells are also able to produce IL-17. MAIT cells are characterized by high CD161 expression and a semi-invariant Vα7.2 TCR, with which they recognize bacterial and yeast Ags derived from the riboflavin (vitamin B2) metabolism...
January 3, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29295724/long-non-coding-rna-cat104-promotes-cell-viability-migration-and-invasion-in-gastric-carcinoma-cells-through-activation-of-microrna-381-inhibiting-zinc-finger-e-box-binding-homeobox-1-zeb1-expression
#19
Gang Yuan, Jingzi Quan, Dongfang Dong, Qunying Wang
Gastric carcinoma (GC) remains the second leading cause of cancer-related death worldwide. Good biomarker is of paramount importance for GC therapy. This study was aimed to assess the role of long non-coding RNA (LncRNA) CAT104 in GC. We found that CAT104 was highly expressed in human GC NCI-N87, SGC7901, BGC823, BGC803 and AGS cells. Suppression of CAT104 decreased NCI-N87 cell viability, migration and invasion, but promoted apoptosis. CAT104 knockdown enhanced the expression of microRNA-381 (miR-381) expression in NCI-N87 cells...
January 2, 2018: Oncology Research
https://www.readbyqxmd.com/read/29288758/chemical-findings-and-in-vitro-biological-studies-to-uphold-the-use-of-ficus-exasperata-vahl-leaf-and-stem-bark
#20
Didier G Mouho, Andreia P Oliveira, Charles Guillaume Kodjo, Patrícia Valentão, Angel Gil-Izquierdo, Paula B Andrade, Zana Adama Ouattara, Yves-Alain Bekro, Federico Ferreres
Ficus exasperata Vahl, commonly known as sandpaper, is a terrestrial Afro-tropical tree used in popular medicine. Despite the existence of some works on the biological activities of this species, its chemical composition is still poorly known. The aim of this study was to extend the knowledge on the phytochemistry and biological properties of this species. Aqueous extracts from F. exasperata leaves and stem bark were analysed. Thirty-one phenolic compounds, comprising cinnamoyl derivatives, flavonoid-O-glycosides, flavonoid-mono-C-glycosides, flavonoid-di-C-glycosides and one furanocoumarin, were determined by HPLC-DAD-ESI/MSn and UPLC-ESI-QTOF-MS, 26 of them being reported for the first time in this species...
December 27, 2017: Food and Chemical Toxicology
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