9,629 results match your criteria npc cell


RNA-binding protein YBX1 promotes cell proliferation and invasiveness of nasopharyngeal carcinoma cells binding to AURKA mRNA.

J Cancer 2021 7;12(11):3315-3324. Epub 2021 Apr 7.

The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China.

RNA-binding proteins (RBPs) play essential roles in post-transcriptional control of gene expression. Dysregulation of RBPs is intensively implicated in development and progression of human diseases, including cancers. However, the roles of RBPs in nasopharyngeal carcinoma (NPC), which is a distinct subtype of head and neck cancer, remain elusive. Read More

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Subdivision of de-novo metastatic nasopharyngeal carcinoma based on tumor burden and pretreatment EBV DNA for therapeutic guidance of locoregional radiotherapy.

BMC Cancer 2021 May 11;21(1):534. Epub 2021 May 11.

Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China.

Background: Nasopharyngeal carcinoma (NPC) is a malignancy predominantly associated with infection by the Epstein-Barr virus (EBV). Approximately 12,900 new cases of NPC occur each year, with more than 70% of cases occurring in the east and southeast Asia. NPC is different from ordinary head and neck squamous cell carcinoma due to its particular biological properties and it is highly sensitive to radiotherapy. Read More

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HOXA11-AS induces cisplatin resistance by modulating the microRNA-98/PBX3 axis in nasopharyngeal carcinoma.

Oncol Lett 2021 Jun 26;21(6):493. Epub 2021 Apr 26.

Department of Otolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China.

Long non-coding RNA homeobox A11-antisense RNA (HOXA11-AS) has been implicated in cisplatin (DDP) resistance in multiple types of cancer. The purpose of the present study was to investigate the role of HOXA11-AS in DDP-resistant nasopharyngeal carcinoma (NPC) cells. The expression levels of HOXA11-AS were examined using reverse transcription-quantitative PCR. Read More

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Hypoxia-inducible factor-1α regulates PI3K/AKT signaling through microRNA-32-5p/PTEN and affects nucleus pulposus cell proliferation and apoptosis.

Exp Ther Med 2021 Jun 18;21(6):646. Epub 2021 Apr 18.

Department of Sports Medicine, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Xiuying, Haikou, Hainan 570311, P.R. China.

Intervertebral disc degeneration and resulting low back pain arises from the programmed apoptosis of nucleus pulposus cells (NPCs). Recent studies show that hypoxia-inducible factor-1α plays a vital role in the etiology and pathogenesis of disc degeneration. However, the underlying mechanism of HIF-1α in NPCs is unclear. Read More

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Preparation of FA-targeted magnetic nanocomposites co-loading TFPI-2 plasmid and cis-platinum and its targeted therapy effects on nasopharyngeal carcinoma.

Int J Med Sci 2021 9;18(11):2355-2365. Epub 2021 Apr 9.

Department of Otolaryngology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China.

The majority of patients diagnosed with nasopharyngeal carcinoma (NPC) present with advanced-stage disease. The main treatment for these patients is concurrent chemoradiotherapy, which has various side effects. To improve the therapeutic effects and reduce the side effects of NPC chemoradiotherapy, we constructed a multifunctional folic acid (FA)-targeted magnetic nanocomposite codelivering tissue factor pathway inhibitor-2 (TFPI-2) and cisplatin (CDDP). Read More

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LncRNA HOTAIR regulates the expression of E-cadherin to affect nasopharyngeal carcinoma progression by recruiting histone methylase EZH2 to mediate H3K27 trimethylation.

Genomics 2021 May 6. Epub 2021 May 6.

Center of Reproductive and Genetic Medicine, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise 533000, Guangxi, China. Electronic address:

Background/aim: There has been increasing evidence for the function of long non-coding RNA (lncRNA) in nasopharyngeal carcinoma (NPC). We aim to delve into the position of lncRNA HOX antisense intergenic RNA (HOTAIR), together with enhancer of zeste homolog 2 (EZH2), E-cadherin and trimethylation of lysine 27 on histone H3 (H3K27me3) in NPC.

Methods: HOTAIR, EZH2, and E-cadherin expression in NPC tissues and cells were tested. Read More

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Circulating Epstein-Barr virus DNA level post induction chemotherapy contributes to prognostication in advanced-stage nasopharyngeal carcinoma.

Eur J Cancer 2021 May 5;151:63-71. Epub 2021 May 5.

Department of Radiation Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-Sen University Cancer Center, No. 651 Dongfeng Eastern Road, Guangzhou, 510060, China. Electronic address:

Background: To investigate the value of post-induction chemotherapy (IC) cell-free Epstein-Barr virus DNA (cfEBV DNA) for prognostication in locally advanced nasopharyngeal carcinoma (LA-NPC).

Methods: A total of 910 histologically proven LA-NPC undergoing radical IC + concurrent chemo-radiotherapy (CCRT) or targeted radiotherapy (CTRT) or both (CTCRT) were involved. The concentration of cfEBV DNA was measured by quantitative polymerase chain reaction pre-IC (cfEBV DNA) and at IC completion. Read More

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Dietary patterns and risk of nasopharyngeal carcinoma: a population-based case-control study in southern China.

Am J Clin Nutr 2021 May 8. Epub 2021 May 8.

Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden.

Background: Dietary factors, such as consumption of preserved foods, fresh vegetables, and fruits, have been linked to the risk of nasopharyngeal carcinoma (NPC). However, little is known about associations between dietary patterns and the risk of NPC in NPC-endemic areas.

Objectives: We aimed to evaluate whether dietary patterns are associated with NPC risk. Read More

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LINC-PINT impedes DNA repair and enhances radiotherapeutic response by targeting DNA-PKcs in nasopharyngeal cancer.

Cell Death Dis 2021 May 7;12(5):454. Epub 2021 May 7.

Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 87 Xiangya Road, 410008, Changsha, P. R. China.

Radioresistance continues to be the leading cause of recurrence and metastasis in nasopharyngeal cancer. Long noncoding RNAs are emerging as regulators of DNA damage and radioresistance. LINC-PINT was originally identified as a tumor suppressor in various cancers. Read More

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Extracellular vesicles regulate gap junction-mediated intercellular communication and HIV-1 infection of human neural progenitor cells.

Neurobiol Dis 2021 May 4:105388. Epub 2021 May 4.

Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL, 33136, USA. Electronic address:

Human immunodeficiency virus-1 (HIV-1) has been shown to cross the blood-brain barrier and cause HIV-associated neurocognitive disorders (HAND) through a process that may involve direct or indirect interactions with the CNS cells and alterations of amyloid β (Aβ) homeostasis. The present study focused on the mechanisms of HIV-1 infecting human neural progenitor cells (hNPCs) and affecting NPC intercellular communications with human brain endothelial cells (HBMEC). Despite the lack of the CD4 receptor, hNPCs were effectively infected by HIV-1 via a mechanism involving the chemokine receptors, CXCR4 and CCR5. Read More

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ADORA1 promotes nasopharyngeal carcinoma cell progression through regulation of PI3K/AKT/GSK-3β/β-catenin signaling.

Life Sci 2021 May 4;278:119581. Epub 2021 May 4.

Department of Radiation Oncology, Yue Bei People's Hospital, Shaoguan, Guangdong, China.

Aims: For most human cancers, the expression pattern and biological function of ADORA1 (Adenosine A1 Receptor) are largely unknown. This study has been designed to explore the clinical significance and the mechanism of ADORA1 in nasopharyngeal carcinoma (NPC) cells.

Materials And Methods: The level of ADORA1 in NPC and its adjacent tissues was analyzed by IHC, real-time PCR and western blotting. Read More

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Epstein-Barr virus DNA loads in the peripheral blood cells predict the survival of locoregionally-advanced nasopharyngeal carcinoma patients.

Cancer Biol Med 2021 May 7. Epub 2021 May 7.

Department of Radiation Oncology, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou 510030, China.

Objective: Circulating cell-free Epstein-Barr virus (EBV) DNA has been shown to be a valuable biomarker for population screening and prognostic surveillance for nasopharyngeal carcinoma (NPC). Despite important insights into the biology of persistence, few studies have addressed the clinical significance of cell-based EBV-DNA loads in peripheral blood cells (PBCs).

Methods: A prospective observational cohort study was conducted involving 1,063 newly diagnosed, locoregionally-advanced NPC patients at Sun Yat-sen University Cancer Center from 2005 to 2007. Read More

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The Role of Mcl-1 in Embryonic Neural Precursor Cell Apoptosis.

Front Cell Dev Biol 2021 20;9:659531. Epub 2021 Apr 20.

Division of BioMedical Sciences, Memorial University, St. John's, NL, Canada.

Myeloid cell leukemia-1 (Mcl-1), an anti-apoptotic Bcl-2 protein, regulates neural precursor cell (NPC) survival in both the developing and adult mammalian nervous system. It is unclear when during the neurogenic period Mcl-1 becomes necessary for NPC survival and whether Bax is the sole pro-apoptotic target of Mcl-1. To address these questions, we used the nervous system-specific Nestin-Cre Mcl-1 conditional knockout mouse line (Mcl-1 CKO) to assess the anti-apoptotic role of Mcl-1 in developmental neurogenesis. Read More

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Increasing mTORC1 Pathway Activity or Methionine Supplementation during Pregnancy Reverses the Negative Effect of Maternal Malnutrition on the Developing Kidney.

J Am Soc Nephrol 2021 May 6. Epub 2021 May 6.

Pediatric Nephrology Unit and Research Lab, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel

Background: Low nephron number at birth is associated with a high risk of CKD in adulthood because nephrogenesis is completed . Poor intrauterine environment impairs nephron endowment an undefined molecular mechanism. A calorie-restricted diet (CRD) mouse model examined the effect of malnutrition during pregnancy on nephron progenitor cells (NPCs). Read More

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CircRNA ZNF609 promotes angiogenesis in nasopharyngeal carcinoma by regulating miR-145/STMN1 axis.

Kaohsiung J Med Sci 2021 May 4. Epub 2021 May 4.

The Second Department of Otolaryngology, Head and Neck Surgery of The First Affiliated Hospital of Kunming Medical University, Kunming, China.

Nasopharyngeal carcinoma (NPC) is the most common type of human malignant tumor in the head and neck, and tumor angiogenesis is essential for its development. Here, we showed that the circRNA ZNF609/microRNA (miR)-145/Stathmin 1 (STMN1) axis regulated angiogenesis in NPC.Circ-ZNF609, miR-145, and STMN1 expression in NPC cells and NPC samples were examined using qRT-PCR. Read More

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The basic route of nuclear-targeted transport of IGF-1/IGF-1R and potential biological functions in intestinal epithelial cells.

Cell Prolif 2021 May 1:e13030. Epub 2021 May 1.

Department of Intensive care unit, The first hospital of Jilin University, Changchun, China.

Objectives: Insulin-like growth factor (IGF-1) plays an important role in many biological processes in the intestinal tract. However, the cellular behaviour and characteristics of IGF-1/IGF-1R in intestinal cells remain unclear.

Materials And Methods: A series of techniques (such as indirect immunofluorescence, co-localization and Western blot) have been used to systematically study the cellular behaviour of IGF-1/IGF-1R on intestinal cells. Read More

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Identification of key pseudogenes in nasopharyngeal carcinoma based on RNA-Seq analysis.

BMC Cancer 2021 Apr 30;21(1):483. Epub 2021 Apr 30.

Department of Otolaryngology, Eye, Ear, Nose and Throat Hospital, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Fudan University, 83 Fen Yang Road, Shanghai, 200031, China.

Background: Nasopharyngeal carcinoma (NPC) is a malignant head and neck tumor, and more than 70% of new cases are in East and Southeast Asia. However, association between NPC and pseudogenes playing important roles in genesis of multiple tumor types is still not clear and needs to be investigated.

Methods: Using RNA-Sequencing (RNA-seq) technology, we analyzed pseudogene expression in 13 primary NPC and 6 recurrent NPC samples as well as their paracancerous counterparts. Read More

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Radioresistant Nasopharyngeal Carcinoma Cells Exhibited Decreased Cisplatin Sensitivity by Inducing SLC1A6 Expression.

Front Pharmacol 2021 13;12:629264. Epub 2021 Apr 13.

Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.

Cisplatin-based regimens are commonly used for the treatment of nasopharyngeal carcinoma (NPC) in patients who receive concurrent chemoradiotherapy. The sensitivity of NPC cells to cisplatin is closely associated with the efficacy of radiation therapy. In this study, we established two radioresistant NPC cell lines, HONE1-IR and CNE2-IR, and found that both cell lines showed reduced sensitivity to cisplatin. Read More

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Myelin basic protein enhances axonal regeneration from neural progenitor cells.

Cell Biosci 2021 Apr 29;11(1):80. Epub 2021 Apr 29.

Department of Orthopedics, the Second Affiliated Hospital of Chongqing Medical University, No. 76 Linjiang Road, Yuzhong District, Chongqing, 400010, China.

Introduction: Stem cell therapy using neural progenitor cells (NPCs) shows promise in mitigating the debilitating effects of spinal cord injury (SCI). Notably, myelin stimulates axonal regeneration from mammalian NPCs. This led us to hypothesize that myelin-associated proteins may contribute to axonal regeneration from NPCs. Read More

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Human Caspase 12 Enhances NF-κB Activity through Activation of IKK in Nasopharyngeal Carcinoma Cells.

Int J Mol Sci 2021 Apr 28;22(9). Epub 2021 Apr 28.

Department of Otolaryngology, Head and Neck Surgery, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.

Human nasopharyngeal carcinoma (NPC) is a highly invasive cancer associated with proinflammation. Caspase-12 (Casp12), an inflammatory caspase, is implicated in the regulation of NF-κB-mediated cellular invasion via the modulation of the IκBα protein in NPC cells. However, the effect mechanisms of Casp12 need to be elucidated. Read More

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Genistein Activates Transcription Factor EB and Corrects Niemann-Pick C Phenotype.

Int J Mol Sci 2021 Apr 19;22(8). Epub 2021 Apr 19.

Departament of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago 3580000, Chile.

Niemann-Pick type C disease (NPCD) is a lysosomal storage disease (LSD) characterized by abnormal cholesterol accumulation in lysosomes, impaired autophagy flux, and lysosomal dysfunction. The activation of transcription factor EB (TFEB), a master lysosomal function regulator, reduces the accumulation of lysosomal substrates in LSDs where the degradative capacity of the cells is compromised. Genistein can pass the blood-brain barrier and activate TFEB. Read More

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Nucleocytoplasmic Transport: Regulatory Mechanisms and the Implications in Neurodegeneration.

Int J Mol Sci 2021 Apr 17;22(8). Epub 2021 Apr 17.

Department of Biology, University of Louisiana at Lafayette, 410 East Saint Mary Boulevard, Lafayette, LA 70503, USA.

Nucleocytoplasmic transport (NCT) across the nuclear envelope is precisely regulated in eukaryotic cells, and it plays critical roles in maintenance of cellular homeostasis. Accumulating evidence has demonstrated that dysregulations of NCT are implicated in aging and age-related neurodegenerative diseases, including amyotrophic lateral sclerosis (ALS), frontotemporal dementia (FTD), Alzheimer's disease (AD), and Huntington disease (HD). This is an emerging research field. Read More

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Roles of Inflammasomes in Epstein-Barr Virus-Associated Nasopharyngeal Cancer.

Cancers (Basel) 2021 Apr 8;13(8). Epub 2021 Apr 8.

Center for Cancer and Stem Cell Research, Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur 57000, Malaysia.

Epstein-Barr virus (EBV) infection is recognised as one of the causative agents in most nasopharyngeal carcinoma (NPC) cases. Expression of EBV viral antigens can induce host's antiviral immune response by activating the inflammasomes to produce pro-inflammatory cytokines, such as interleukin-1β (IL-1β) and IL-18. These cytokines are known to be detrimental to a wide range of virus-infected cells, in which they can activate an inflammatory cell death program, called pyroptosis. Read More

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NF-κB and TNF Affect the Astrocytic Differentiation from Neural Stem Cells.

Cells 2021 Apr 8;10(4). Epub 2021 Apr 8.

Department of Life Sciences and Medicine, Faculty of Science, Technology and Communication, University of Luxembourg, L-1511 Luxembourg, Luxembourg.

The NF-κB signaling pathway is crucial during development and inflammatory processes. We have previously shown that NF-κB activation induces dedifferentiation of astrocytes into neural progenitor cells (NPCs). Here, we provide evidence  that the NF-κB pathway plays also a fundamental role during the differentiation of NPCs into astrocytes. Read More

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B-Cell Regeneration Profile and Minimal Residual Disease Status in Bone Marrow of Treated Multiple Myeloma Patients.

Cancers (Basel) 2021 Apr 3;13(7). Epub 2021 Apr 3.

Translational and Clinical Research Program, Cancer Research Center (IBMCC, USAL-CSIC), Cytometry Service (NUCLEUS) and Department of Medicine, University of Salamanca, Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain.

B-cell regeneration during therapy has been considered as a strong prognostic factor in multiple myeloma (MM). However, the effects of therapy and hemodilution in bone marrow (BM) B-cell recovery have not been systematically evaluated during follow-up. MM (n = 177) and adult (≥50y) healthy donor (HD; n = 14) BM samples were studied by next-generation flow (NGF) to simultaneously assess measurable residual disease (MRD) and residual normal B-cell populations. Read More

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A primary nasopharyngeal three-dimensional air-liquid interface cell culture model of the pseudostratified epithelium reveals differential donor- and cell type-specific susceptibility to Epstein-Barr virus infection.

PLoS Pathog 2021 Apr 29;17(4):e1009041. Epub 2021 Apr 29.

Cancer Virology Program, University of Pittsburgh Medical Center (UPMC), University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America.

Epstein-Barr virus (EBV) is a ubiquitous γ-herpesvirus with latent and lytic cycles. EBV replicates in the stratified epithelium but the nasopharynx is also composed of pseudostratified epithelium with distinct cell types. Latent infection is associated with nasopharyngeal carcinoma (NPC). Read More

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On the asymmetric partitioning of nucleocytoplasmic transport - recent insights and open questions.

J Cell Sci 2021 Apr 13;134(7). Epub 2021 Apr 13.

Biozentrum and the Swiss Nanoscience Institute, University of Basel, Basel CH4056, Switzerland.

Macromolecular cargoes are asymmetrically partitioned in the nucleus or cytoplasm by nucleocytoplasmic transport (NCT). At the center of this activity lies the nuclear pore complex (NPC), through which soluble factors circulate to orchestrate NCT. These include cargo-carrying importin and exportin receptors from the β-karyopherin (Kapβ) family and the small GTPase Ran, which switches between guanosine triphosphate (GTP)- and guanosine diphosphate (GDP)-bound forms to regulate cargo delivery and compartmentalization. Read More

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MicroRNA-384 inhibits nasopharyngeal carcinoma growth and metastasis via binding to Smad5 and suppressing the Wnt/β-catenin axis.

Cytotechnology 2021 Apr 26;73(2):203-215. Epub 2021 Feb 26.

Department of Otorhinolaryngology, People's Hospital of Shenzhen Baoan District, No. 118 longjing Second Road, Shenzhen, Guangdong 518101 P.R. China.

Nasopharyngeal carcinoma (NPC) is a major otorhinolaryngological disease with limited effective therapeutic options. This work focused on the function of microRNA-384 (miR-384) on the NPC pathogenesis and the molecules involved. miR-384 expression in cancer tissues and cells was detected. Read More

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O-GlcNAc modification of nuclear pore complexes accelerates bidirectional transport.

J Cell Biol 2021 Jul;220(7)

Department of Systems Biology, Blavatnik Institute, Harvard Medical School, Boston, MA.

Macromolecular transport across the nuclear envelope depends on facilitated diffusion through nuclear pore complexes (NPCs). The interior of NPCs contains a permeability barrier made of phenylalanine-glycine (FG) repeat domains that selectively facilitates the permeation of cargoes bound to nuclear transport receptors (NTRs). FG-repeat domains in NPCs are a major site of O-linked N-acetylglucosamine (O-GlcNAc) modification, but the functional role of this modification in nucleocytoplasmic transport is unclear. Read More

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Metal-Organic Framework Derived Ultralow-Loading Platinum-Copper Catalyst: A Highly Active and Durable Bifunctional Electrocatalyst for Oxygen-Reduction and Evolution Reactions.

Authors:
Anand Parkash

Nanotechnology 2021 Apr 26. Epub 2021 Apr 26.

Chemistry and Chemical Engineering, Shaanxi Normal University, bSchool of Chemistry and Chemical Engine, Xi'an, 710062, CHINA.

Electrocatalysts with high active oxygen reduction (ORR) and oxygen evolution reaction (OER) activities are key factors in renewable energy technologies. Unlike common strategies for adjusting the proportion of metal centers in a multi-metal organic framework (MOF), herein, we designed and synthesized bifunctional electrocatalysts using CTAB-capped ultra-low content platinum (Pt) (≤0.5 wt. Read More

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