RIG ‐I promotes IFN/JAK2 expression and the endoplasmic reticulum stress response to inhibit chemoradiation resistance in nasopharyngeal carcinoma

RIG ‐I expression was significantly reduced in chemoradiotherapy‐resistant NPC tissues and cells compared with that in therapy‐sensitive tissues and cells. RIG‐I overexpression promoted radiotherapy and chemotherapy sensitivity in NPC cells, leading to cellular apoptosis and increased expression of the proapoptotic factors BAX and caspase‐3. RIG‐I promotes IFN/JAK2 and ER stress response‐mediated apoptosis to inhibit chemoradiation resistance in nasopharyngeal carcinoma. AbstractRIG ‐I is associated with the occurrence and development of many tumors. However, the role of RIG‐I in radiotherapy and chemotherapy in NPC has not been reported to date. In our study, RIG‐I expression was significantly reduced in chemoradiotherapy‐resistant NPC tissues and cells compared with t hat in therapy‐sensitive tissues and cells. RIG‐I expression increased in nonresistant NPC cells, including CNE1 and CNE2, in a dose‐dependent manner with increasing chemotherapy drug concentration or radiotherapy dose. RIG‐I overexpression promoted radiotherapy and chemotherapy sensitivity in NPC cells, leading to cellular apoptosis and increased expression of the proapoptotic factors BAX and caspase‐3. Similarly, RIG‐I knockdown in NPC cells promoted chemoradiotherapy resistance and reduced apoptosis. Analysis of microarray data indicated that the expression of IFN/JAK2 and endop lasmic reticulum (ER) stress response markers, such as JAK2, STAT1, IRF9, IFNB1, IRF3, p‐IRF3,...
Source: Cancer Medicine - Category: Cancer & Oncology Authors: Tags: ORIGINAL RESEARCH Source Type: research

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Source: Cancer Management and Research - Category: Cancer & Oncology Tags: Cancer Management and Research Source Type: research
AbstractBackgroundWe aimed to establish a prognostic model based on magnetic resonance imaging using deep learning to predict disease-free survival in patients with non-metastatic nasopharyngeal carcinoma.MethodsIn this retrospective, cohort study, we included 1636 patients who were diagnosed with non-metastatic nasopharyngeal carcinoma and underwent radical treatment at the Sun Yat-sen University Cancer Center. Patients from October 2010 to March 2015 were randomly divided into training cohort (n  = 878) and validation cohort (n = 376); 382 patients from April 2015 to September 2015 were separa...
Source: Annals of Oncology - Category: Cancer & Oncology Source Type: research
ConclusionsThe PMSRN is a reliable prognostic tool for survival risk in NPC patients and might be able to predict which patients need to receive ICT or not. It might guide treatment decisions for NPC patients.Clinical trial identificationChiECRCT20190034.Legal entity responsible for the studySun Yet-sen University Cancer Center.FundingNational Natural Science Foundation of China.DisclosureAll authors have declared no conflicts of interest.
Source: Annals of Oncology - Category: Cancer & Oncology Source Type: research
ConclusionsThe nutrition status and QoL of NPC patients decreased during treatment. Though prophylactic nutritional intervention can enhance the completion of concurrent chemotherapy and keep the plasma protein stable, but it has no advantage in weight loss and quality of life except feeling ill.Clinical trial identificationNCT02948699.Legal entity responsible for the studyZhejiang Cancer Hospital.FundingNutricia.DisclosureAll authors have declared no conflicts of interest.
Source: Annals of Oncology - Category: Cancer & Oncology Source Type: research
ConclusionsWe recommend MSC as a more reasonable method for oral mucosa contouring in TOMO treatment plan for nasopharyngeal carcinoma patients.Legal entity responsible for the studyThe authors.FundingHas not received any funding.DisclosureAll authors have declared no conflicts of interest.
Source: Annals of Oncology - Category: Cancer & Oncology Source Type: research
AbstractBackgroundNasopharyngeal carcinoma (NPC) is a rare cancer in many areas including Europe and Middle East/Mediterranean. Data regarding natural history, prognostic factors and treatment strategies in NPC patients (pts) are derived mostly from studies conducted in endemic regions.MethodsWe collected clinical data on consecutive NPC pts treated in non-endemic countries from 2005 to 2016. Main objective of the study was to collect clinical/biological parameters and to correlate them with the outcome, at uni- and multivariate analysis, using the Cox regression model.ResultsThe database included 1220 pts from 34 Centers....
Source: Annals of Oncology - Category: Cancer & Oncology Source Type: research
CONCLUSION: There is no evidence of benefit from the addition of cetuximab to standard management protocols, and there is some evidence of increased toxicity. There is more promise for its use in metastatic or locally recurrent settings. This review draws together the existing evidence and could provide a focus for future studies. PMID: 31506113 [PubMed - as supplied by publisher]
Source: Journal of Laryngology and Otology - Category: ENT & OMF Tags: J Laryngol Otol Source Type: research
Pulmonary lymphoepithelioma-like carcinoma (LELC) is a rare and unique subtype of primary non-small cell lung cancer (NSCLC) that histologically resembles undifferentiated nasopharyngeal carcinoma (NPC) [1]. It is recognized to be etiologically associated with Epstein-Barr virus (EBV) infection in endemic area [2]. Currently, pulmonary LELC is classified as “other and unclassified carcinomas” according to the 2015 World Health Organization Classification Lung Tumors [3]. Over the past decades, less than 600 cases have been reported in the literature.
Source: Lung Cancer - Category: Cancer & Oncology Authors: Source Type: research
This study aimed to evaluate the prognostic value of combining pretreatment Epstein ‐Barr virus (EBV) DNA level and cervical node necrosis (CNN) for patients with nasopharyngeal carcinoma (NPC) receiving intensity‐modulated radiotherapy (IMRT). A total of 607 incident nonmetastatic NPC patients treated with IMRT ± chemotherapy were reviewed. Patients were divided into four g roups based on EBV DNA level and CNN status. The primary endpoint was progression‐free survival (PFS). Kaplan‐Meier curves with log‐rank test were applied to compare survival outcomes and the Cox proportional model was used t...
Source: Cancer Medicine - Category: Cancer & Oncology Authors: Tags: ORIGINAL RESEARCH Source Type: research
Nasopharyngeal carcinoma (NPC) is a malignancy of epithelial origin that is prone to local invasion and early distant metastasis. Although concurrent chemotherapy and radiotherapy improves the 5-year survival outcomes, persistent or recurrent disease still occurs. Therefore, novel therapeutic targets are needed for NPC patients. MicroRNAs (miRNAs) play important roles in normal cell homeostasis, and dysregulations of miRNA expression have been implicated in human cancers. In NPC, studies have revealed that miRNAs are dysregulated and involved in tumorigenesis, metastasis, invasion, resistance to chemo- and radiotherapy, an...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
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