The JAK2/STAT3 pathway is involved in the anti-melanoma effects of brevilin A

This study aimed to determine whether brevilin A has anti-melanoma effects, and whether STAT3 signaling is involved in the effects.Main methodsA mouse A375 xenograft model, as well as A375 and A2058 cell models were employed to assess the in vivo and in vitro anti-melanoma effects of brevilin A. A375 cells stably expressing STAT3C, a constitutively active STAT3 mutant, were used to determine the role of STAT3 signaling in brevilin A's anti-melanoma effects.Key findingsIntraperitoneal injection of brevilin A dose-dependently inhibited melanoma growth in mice and suppressed STAT3 phosphorylation in the tumors. In cultured cells, brevilin A reduced cell viability, induced apoptosis, suppressed migration and invasion, decreased protein levels of phospho-JAK2 (Y1007/1008) and phospho-STAT3 (Tyr705), and restrained STAT3 nuclear localization. STAT3 over-activation diminished brevilin A's effects on cell viability and migration. Collectively, brevilin A exerts anti-melanoma effects and these effects are at least in part attributed to the inhibition of the JAK2/STAT3 pathway.SignificanceOur findings provide a pharmacological basis for developing brevilin A as a new phytotherapeutic agent against melanoma.
Source: Life Sciences - Category: Biology Source Type: research

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Conclusions: The newly developed radiomic signature was a powerful predictor of LN metastasis and the radiomics nomogram could facilitate the preoperative individualized prediction of LN status. Introduction Gastric cancer (GC) is one of the most common malignant tumors and the second leading cause of cancer-related deaths worldwide (1). Accurate evaluation of lymph node metastasis (LNM) status in GC patients is vital for prognosis and treatment decisions (2–4). Some histopathologic factors and biomarkers (e.g., lymphatic invasion, matrix metalloproteinase-2) are found to be able to predict LNM in GC, but mos...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Conclusion Several TISC-based immunotherapeutic approaches are under development in various stages of preclinical studies. As outlined in this review article, a careful and more exhaustive genetic and metabolic understanding of TISC-associated phenotypes is critical to develop novel TISC based immunotherapies. Various components within the tumor microenvironment such as tumor cells, infiltrating immune cells, and supporting stromal cells impact the TISC metabolism. This unique metabolic profile leads to upregulation of certain enzymes and proteins such as ALDH1, CEP55, IDO COA1 etc., which can be utilized for development ...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Yi He†, Wenyong Long† and Qing Liu* Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China Super-enhancers (SEs) refer to large clusters of enhancers that drive gene expressions. Recent data has provided novel insights in elucidating the roles of SEs in many diseases, including cancer. Many mechanisms involved in tumorigenesis and progression, ranging from internal gene mutation and rearrangement to external damage and inducement, have been demonstrated to be highly associated with SEs. Moreover, translocation, formation, deletion, or duplication of SEs themselves co...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
Conclusions: CAR T cell therapies have demonstrated the clinical benefits of harnessing our body's own defenses to combat tumor cells. Similar research is being conducted on lesser known modifications and gene-modified immune cells, which we highlight in this review. Introduction Chimeric antigen receptors and engineered T cell receptors (based on previously identified high affinity T cell receptors) function by redirecting T cells to a predefined tumor-specific (or tumor-associated) target. Most of these modifications use retroviral or lentiviral vectors to integrate the construct, and most of the receptors ...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
The objective of this study was to investigate the prognostic significance of glycolysis-related proteins.Materials and methodsWe searched MEDLINE, EMBASE, Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials, using Pubmed and Ovid as search engines and Google Scholar from inception to April 2017. Eighty-six studies with 12,002 patients were included in the study.ResultsOur pooled results identified that glycolysis-related proteins in cancers were associated with shorter overall survival of colorectal cancer (HR 2.33, 95% CI 1.38 –3.93,P = 0.002), gastric cancer (HR 1....
Source: Journal of Cancer Research and Clinical Oncology - Category: Cancer & Oncology Source Type: research
The objective of this study was to investigate the prognostic significance of glycolysis-related proteins. MATERIALS AND METHODS: We searched MEDLINE, EMBASE, Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials, using Pubmed and Ovid as search engines and Google Scholar from inception to April 2017. Eighty-six studies with 12,002 patients were included in the study. RESULTS: Our pooled results identified that glycolysis-related proteins in cancers were associated with shorter overall survival of colorectal cancer (HR 2.33, 95% CI 1.38-3.93, P = 0.002), gastric can...
Source: Clinical Breast Cancer - Category: Cancer & Oncology Authors: Tags: J Cancer Res Clin Oncol Source Type: research
ConclusionIn conclusion, this is the first research to identify the anti-NPC effect of erianin via the apoptosis mechanism. Erianin was a promising natural agent against nasopharyngeal carcinoma.Graphical abstract
Source: Biomedicine and Pharmacotherapy - Category: Drugs & Pharmacology Source Type: research
CONCLUSION: In conclusion, this is the first research to identify the anti-NPC effect of erianin via the apoptosis mechanism. Erianin was a promising natural agent against nasopharyngeal carcinoma. PMID: 30590314 [PubMed - as supplied by publisher]
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - Category: Drugs & Pharmacology Authors: Tags: Biomed Pharmacother Source Type: research
Objective: To investigate the clinical features of 2nd hematological malignancies post to the initial cancer treatment.METHODS: A retrospective study was performed to analyze the available clinical data of 116 patients diagnosed with 2nd hematologic malignancies after treatment of various malignant tumors from June 1998 to June 2018 at Sun Yat-sen University cancer center.RESULTS: The characteristics of the 116 patients diagnosed with 2nd hematological cancer post to initial cancer treatment were indicated as following: 62 males and 54 females. The primary tumor category was grouped as (according to ICD-10 International Di...
Source: Blood - Category: Hematology Authors: Tags: 904. Outcomes Research-Malignant Conditions Source Type: research
Abstract Chronic inflammation increases the risk of development of human malignancies. iNOS is an enzyme dominantly expressed during inflammatory reactions and seems to play a critical role in tumorigenesis. Our aim was to assess the iNOS expression in four types of human tumors: breast, colorectal, nasopharyngeal, and melanoma, of Tunisian patients. The level of iNOS was measured by RT-QPCR in tumor specimens. We showed that the expression of iNOS was higher in breast compared to colorectal and nasopharyngeal tumors, whereas in melanoma, the level of iNOS expression was low. Significant associations were found wh...
Source: Tumor Biology - Category: Cancer & Oncology Source Type: research
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