Telomerase reverse transcriptase promotes the proliferation of human laryngeal carcinoma cells through activation of the activator protein 1.

Abstract:

:TERT is the main functional unit of telomerase, which maintains telomere length and chromosome structure stability. TERT has been shown to act as a key factor in various biological processes, such as cell proliferation, via uncharacterized mechanisms. We transfected HEp-2 laryngeal carcinoma cells with a TERT overexpressing adenovirus (Ad-TERT) and TERT shRNA silencing adenovirus (Ad-sh-TERT), and examined the effect on TERT and the AP-1 transcription factor subunits c-Fos and c-Jun using RT-PCR and western blot analysis. TERT mRNA expression was quantified using RT-PCR in 24 human laryngeal carcinoma samples, and TERT protein co-expression with AP-1 was investigated in a human laryngeal carcinoma tissue microarray using quantum-dot based immunofluorescence. The effect of specific ERK and p38 inhibitors on ERK, p38, c-Jun and c-Fos phosphorylation was investigated in TERT-overexpressing HEp-2 cells. TERT overexpression led to increased TERT, c-Jun and c-Fos mRNA and protein expression and increased cell proliferation, while TERT silencing had the opposite effects. TERT mRNA expression levels were positively correlated with c-Fos and c-Jun mRNA in human laryngeal carcinoma tissue. TERT and AP-1 protein were expressed at high levels and positively correlated in laryngeal carcinoma tissues. Treatment of TERT-overexpressing HEp-2 cells with specific p38 and ERK inhibitors indicated that TERT modulates the expression and phosphorylation of the AP-1 subunits c-Jun and c-Fos through the p38 and ERK signaling pathways. In conclusion, the results of this study indicate that TERT is capable of promoting cell proliferation via activation of the AP-1 subunits, c-Jun and c-Fos, in laryngeal carcinoma cells.

journal_name

Oncol Lett

journal_title

Oncology letters

authors

Jiang Y,Chen C,Chen SM,Wang YQ,Xu Y,Wang Y,Chen Z,Xiao BK,Tao ZZ

doi

10.3892/ol.2013.1344

subject

Has Abstract

pub_date

2013-07-01 00:00:00

pages

75-80

issue

1

eissn

1792-1074

issn

1792-1082

pii

ol-06-01-0075

journal_volume

6

pub_type

杂志文章
  • Interpretation of a heterogeneous radiological response as tumor heterogeneity or a non-tumor diagnosis: A case report.

    abstract::Heterogeneous radiological responses (HRRs) among tumor lesions are usually observed following chemotherapy or radiation treatment in cancer patients. When HRR is observed after chemotherapy or radiation treatment, a change in anticancer treatment is recommended due to the clinically high suspicion of resistance in th...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2015.3709

    authors: Ryu JS,Kim L,Kim WC,Kim JS,Memon A,Yi BR,Kim HJ

    更新日期:2015-11-01 00:00:00

  • Laparoscopic tumorectomy for a primary ovarian leiomyoma during pregnancy: A case report.

    abstract::Few reports have explored laparoscopic adnexal tumorectomy as a treatment for large and symptomatic ovarian leiomyomas during pregnancy. The current study presents the case of a patient with a large and symptomatic ovarian leiomyoma at 14 weeks of pregnancy. A laparoscopic adnexal tumorectomy was performed without com...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2014.2596

    authors: Zhao X,Chen L,Zeng W,Jin B,DU W

    更新日期:2014-12-01 00:00:00

  • Novel association of MEN1 gene mutations with parathyroid carcinoma.

    abstract::Inactivating mutations of the multiple endocrine neoplasia 1 (MEN1) gene cause MEN1 syndrome, characterized by primary hyperparathyroidism (pHPT), and parathyroid and gastro-entero-pancreatic pituitary tumors. At present, only 14 cases of malignant parathyroid tumor have been associated with the syndrome, with 6 cases...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2017.6162

    authors: Cinque L,Sparaneo A,Cetani F,Coco M,Clemente C,Chetta M,Balsamo T,Battista C,Sanpaolo E,Pardi E,D'Agruma L,Marcocci C,Maiello E,Hendy GN,Cole DEC,Scillitani A,Guarnieri V

    更新日期:2017-07-01 00:00:00

  • SIRT6 inhibits colorectal cancer stem cell proliferation by targeting CDC25A.

    abstract::Silent information regulator 6 (SIRT6) is broadly considered as a tumor suppressor due to its function in the suppression of oncogene expression. However, the role of SIRT6 in colorectal cancer stem cells (CSCs) remains uncharacterized. In the present study, it was demonstrated that SIRT6 expression was reduced in col...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2018.7989

    authors: Liu W,Wu M,Du H,Shi X,Zhang T,Li J

    更新日期:2018-04-01 00:00:00

  • Desmoid-type fibromatosis of the breast: A report of 2 cases.

    abstract::Mammary fibromatosis is a rare and locally aggressive benign tumor of the breast; it originates from fibroblasts and myofibroblasts within the breast parenchyma and does not metastasize. The condition is locally aggressive and has a high rate of recurrence. The etiology of mammary fibromatosis is unknown. Breast imagi...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2017.6337

    authors: Benej R,Mečiarová I,Pohlodek K

    更新日期:2017-08-01 00:00:00

  • Homoisoflavanone-1 isolated from Polygonatum odoratum arrests the cell cycle and induces apoptosis in A549 cells.

    abstract::Homoisoflavanone-1 is a natural compound that may be extracted from the Chinese medicinal herb Polygonatum odoratum, which has pronounced antioxidant activities. The present study reports that homoisoflavanone-1 significantly inhibited tumor cell growth and induced apoptosis in A549 non-small cell lung cancer (NSCLC) ...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2018.9085

    authors: Ning D,Jin M,Xv T,Sun J,Li M

    更新日期:2018-09-01 00:00:00

  • Prolonged survival in advanced thymoma: Effectiveness of sequential multiple lines of chemotherapy in an inoperable case.

    abstract::A standard therapeutic approach for advanced malignant thymoma has yet to be defined given the rarity of this condition. We present a patient with advanced thymoma, evaluated as inoperable at diagnosis due to multiple serosal metastases. The strong constitution and determination of the patient allowed treatment with s...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2011.282

    authors: Bergonzi M,Orlandoni G,Corbella F,Gobbi PG

    更新日期:2011-05-01 00:00:00

  • Pyridine analogues of curcumin exhibit high activity for inhibiting CWR-22Rv1 human prostate cancer cell growth and androgen receptor activation.

    abstract::The concentrations required for curcumin to exert its anticancer activity (IC50, 20 µM) are difficult to achieve in the blood plasma of patients, due to the low bioavailability of the compound. Therefore, much effort has been devoted to the development of curcumin analogues that exhibit stronger anticancer activity an...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2016.4536

    authors: Zhou DY,Zhao SQ,DU ZY,Zheng XI,Zhang K

    更新日期:2016-06-01 00:00:00

  • Clinical treatment of gastrinoma: A case report and review of the literature.

    abstract::Gastrinoma is a gastrin-secreting tumor that is associated with Zollinger-Ellison syndrome. The majority of cases occur in the pancreas, followed by the duodenum. Early diagnosis is difficult due to the relative rarity of the tumor and the lack of specific symptoms. In the current study, a 68-year-old female patient p...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2016.4397

    authors: Zhang WD,Liu DR,Wang P,Zhao JG,Wang ZF,Chen LI

    更新日期:2016-05-01 00:00:00

  • Anticancer effects of combinational treatment with BRAFV600E siRNA and PI3K pathway inhibitors in melanoma cell lines harboring BRAFV600E.

    abstract::In the present study, the anti-tumor effects of combination treatment with an siRNA targeting B-Raf proto-oncogene serine/threonine kinase (BRAF)V600E and phosphoinositide 3-kinase (PI3K) signaling pathway inhibitors was investigated in melanoma cell lines harboring BRAFV600E. Human melanoma A375 and WM115 cells were ...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2018.8614

    authors: He H,Nan X,Liu S,Zhang L,Yang Z,Wu Y,Zhang L

    更新日期:2018-07-01 00:00:00

  • Gallbladder carcinoma with a large monolocular cystic cancerous component.

    abstract::The monolocular cystic formation associated with gallbladder carcinoma is an extremely rare condition. A 79-year-old female suffering from upper abdominal pain and distention was admitted to our hospital. Ultrasonography and computed tomography revealed a monolocular cyst with an irregular wall thickness of 15 cm in d...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2010.182

    authors: Hiraki M,Yakushiji H,Hashiguchi K,Harada S,Kohya N,Kai K,Yamaguchi K,Mori D,Irie K,Tokunaga O,Noshiro H,Miyazaki K

    更新日期:2010-11-01 00:00:00

  • Effect of human papillomavirus infection on the immune system and its role in the course of cervical cancer.

    abstract::Human papillomavirus (HPV) is widely known as a cause of cervical intraepithelial neoplasia (CIN) and cervical cancer. The mechanisms involved have been studied by numerous studies. The integration of the virus genome into the host cells results in the abnormal regulation of cell cycle control. HPV can also induce imm...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2015.3295

    authors: Song D,Li H,Li H,Dai J

    更新日期:2015-08-01 00:00:00

  • Establishment of an insufficient radiofrequency ablation orthotopic nude mouse model of hepatocellular carcinoma to study the invasiveness and metastatic potential of residual cancer.

    abstract::In order to assess the metastatic potential of residual hepatocellular carcinoma (HCC) following insufficient radiofrequency ablation (RFA) and to improve the current animal model, an insufficient RFA orthotopic nude mouse model of HCC was developed in the present study. A human HCC orthotopic nude mouse model was est...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2019.10552

    authors: Zhang N,Zhu H,Dong YH,Wang L

    更新日期:2019-09-01 00:00:00

  • Reduced expression of microRNA-139-5p in hepatocellular carcinoma results in a poor outcome: An exploration the roles of microRNA-139-5p in tumorigenesis, advancement and prognosis at the molecular biological level using an integrated meta-analysis and bi

    abstract::Hepatocellular carcinoma (HCC) is generally considered one of the most common gastrointestinal malignant tumors, characterized by high invasiveness and metastatic rate, as well as insidious onset. A relationship between carcinogenicity and aberrant microRNA-139-5p (miR-139-5p) expression has been identified in multipl...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2019.11031

    authors: Qin H,Wen DY,Que Q,Zhou CY,Wang XD,Peng YT,He Y,Yang H,Liao BM

    更新日期:2019-12-01 00:00:00

  • Construction and analysis of three networks of genes and microRNAs in adenocarcinoma.

    abstract::Adenocarcinoma is one of the most serious diseases that threaten human health. Numerous studies have investigated adenocarcinoma and have obtained a considerable amount of data regarding genes and microRNA (miRNA) in adenocarcinoma. However, studies have only focused on one or a small number of genes and miRNAs, and t...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2015.3676

    authors: Ning J,Guo X,Wang N,Xue L

    更新日期:2015-11-01 00:00:00

  • Bladder and vaginal transitional cell carcinoma: A case report.

    abstract::The involvement of the female genital tract in transitional cell carcinoma (TCC) has not been fully elucidated in women, although involvement is usually associated with a poor prognosis. The vagina, in particular, is considered to be the most commonly affected gynecological organ, with an incidence of 4% of total TCC ...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2016.4894

    authors: Aoun F,Kourie HR,El Rassy E,van Velthoven R

    更新日期:2016-09-01 00:00:00

  • Overexpression of Thy1 and ITGA6 is associated with invasion, metastasis and poor prognosis in human gallbladder carcinoma.

    abstract::Gallbladder cancer (GBC) is a rare but highly aggressive cancer for which no well-accepted prognostic biomarkers have been identified. Thymus cell antigen 1 (Thy1), also known as cluster of differentiation (CD)90, and integrin α6 (ITGA6), also known as CD49f, are important molecules in cancer and putative markers of v...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2016.5341

    authors: Zhang DH,Yang ZL,Zhou EX,Miao XY,Zou Q,Li JH,Liang LF,Zeng GX,Chen SL

    更新日期:2016-12-01 00:00:00

  • A novel approach to glioma therapy using an oncolytic adenovirus with two specific promoters.

    abstract::Gliomas are the most common type of primary brain tumor in adults, where more than half of the cases are malignant, and the prognosis is poor. The early viral 1A (E1A) protein has been widely recognized to be essential for adenoviral replication and production of progeny virions in human cells, a process that is regul...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2017.7684

    authors: Liu F,Xu K,Yang H,Li Y,Liu J,Wang J,Guan Z

    更新日期:2018-03-01 00:00:00

  • Diagnostic utility of diffusion-weighted magnetic resonance imaging in two common renal tumors.

    abstract::The aim of the present study was to evaluate the utility of diffusion-weighted magnetic resonance imaging (DWI) in the diagnosis of common renal tumors. Conventional magnetic resonance imaging and DWI were performed on 85 patients with renal lesions (54 renal carcinoma and 31 renal angiomyolipoma cases). The apparent ...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2015.3605

    authors: Wen Z,Sun Z,Wang Y

    更新日期:2015-10-01 00:00:00

  • Clinical characteristics of patients with large and deep soft tissue sarcomas.

    abstract::In the present study, the incidence of surgical wound complications in patients with large and deep high-grade soft tissue sarcoma (STS) was investigated. In addition, the disease-specific and event-free survival rates were examined in these patients. In total, 30 adult patients with primary high-grade deep STS with a...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2015.3289

    authors: Nakamura T,Matsumine A,Matsubara T,Asanuma K,Uchida A,Sudo A

    更新日期:2015-08-01 00:00:00

  • Vitamin D supply: from sun or pill? - Attitudes and recommendation on vitamin D and impact on sun protection practices among German general practitioners evaluated by the network of dermato-oncologists, Onkoderm e.V.

    abstract::Recommendations concerning the intake of vitamin D and/or sunlight exposure in the handling of patients with vitamin D deficiency remain a matter of debate. The present study of the German network of dermato-oncologists (Onkoderm e.V.) refers to an inquiry conducted among general practitioners on this and related issu...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2012.939

    authors: Reinhold U,Dirschka T,Hartgens K,Kirchesch H,Ostendorf R,Petering H,Prieur H,Krähn-Senftleben G,Malaisse WJ

    更新日期:2012-12-01 00:00:00

  • Treatment of an Askin tumor: A case report and review of the literature.

    abstract::Askin tumors are rare malignant neoplasms that are localized in the thoracopulmonary region and mainly occur in children and adolescents. Further investigation with regard to the effective treatment of this disease is required, since the disease has a low incidence and limited knowledge is available on the biological ...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2013.1488

    authors: Dou X,Yan H,Wang R

    更新日期:2013-10-01 00:00:00

  • Inhibition of cell migration by ouabain in the A549 human lung cancer cell line.

    abstract::The Na+/K+-ATPase α subunit is highly expressed in malignant cells. Ouabain, a cardioactive glycoside, binds to the Na+/K+-ATPase α subunit and inhibits the activity of Na+/K+-ATPase. In the present study, the effect of ouabain on the migration of A549 cells was analyzed using the wound healing and transwell chamber m...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2013.1406

    authors: Liu N,Li Y,Su S,Wang N,Wang H,Li J

    更新日期:2013-08-01 00:00:00

  • Effect of integrin receptor-targeted liposomal paclitaxel for hepatocellular carcinoma targeting and therapy.

    abstract::The major aim of the present study was to develop an integrin receptor-targeted liposomal paclitaxel (PTX) to enhance the targeting specificity and therapeutic effect of PTX on hepatocellular carcinoma (HCC) cells. The specific Arg-Gly-Asp (RGD) ligand was conjugated to 1,2-distearoylphosphatidylethanolamine-polyethyl...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2015.3242

    authors: Chen L,Liu Y,Wang W,Liu K

    更新日期:2015-07-01 00:00:00

  • Oridonin increases anticancer effects of lentinan in HepG2 human hepatoblastoma cells.

    abstract::The aim of the present study was to investigate whether oridonin is able to increase the effects of lentinan (LNT) in HepG2 human hepatoblastoma cells by MTT, flow cytometry, reverse transcription-quantitative polymerase chain reaction and western blot analysis. The in vitro results demonstrated that 20 µg/ml of orido...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2017.7485

    authors: Sun Z,Han Q,Duan L,Yuan Q,Wang H

    更新日期:2018-02-01 00:00:00

  • Clinicopathological characteristics and prognosis of metaplastic carcinoma of the breast.

    abstract::Metaplastic carcinoma of the breast (MBC) is a rare and heterogeneous type of neoplasm. Knowledge about its clinical characteristics, prognostic significance and optimal treatment modalities is fragmentary and controversial. The present retrospective study aimed to investigate the prognostic value of the clinicopathol...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2017.6399

    authors: Xiao M,Yang Z,Tang X,Mu L,Cao X,Wang X

    更新日期:2017-08-01 00:00:00

  • In vivo evaluation of the synthesized novel 2-benzyloxybenzaldehyde analog CCY-1a-E2 for the treatment of leukemia in the BALB/c mouse WEHI-3 allograft model.

    abstract::Our previous study demonstrated that the 2-benzyloxybenzaldehyde analog CCY-1a-E2 is a potent compound against HL-60 human leukemia cell lines. To investigate the potential therapeutic application of CCY-1a-E2 for leukemia, we analyzed the antileukemic effects and safety of CCY-1a-E2 in the BALB/c mouse WEHI-3 allogra...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2012.1079

    authors: Lin C,Yang JS,Tsai SC,Lin CF,Lee MR

    更新日期:2013-03-01 00:00:00

  • Comparison of KRAS/BRAF mutations between primary tumors and serum in colorectal cancer: Biological and clinical implications.

    abstract::In colorectal cancer (CRC), KRAS and BRAF mutations in primary tumors are associated with resistance to anti-epidermal growth factor receptor (anti-EGFR)-based therapies. However, the correlation between KRAS/BRAF mutation in primary tumors and serum has not been well studied. To evaluate the degree of concordance of ...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2012.963

    authors: Pu X,Pan Z,Huang Y,Tian Y,Guo H,Wu L,He X,Chen X,Zhang S,Lin T

    更新日期:2013-01-01 00:00:00

  • Impact of Lin28 on lymph node metastasis in papillary thyroid carcinoma.

    abstract::Lin28 is involved in the progression of several types of tumors. Data collected from clinical trials have suggested that Lin28 expression is correlated with poor prognosis in thyroid carcinoma. The present study was conducted to investigate the association between Lin28 expression and the clinicopathological parameter...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2020.12358

    authors: Jin S,Xu C,Wang L,Wei J,Wang S

    更新日期:2021-02-01 00:00:00

  • Cloning and expression analysis of the gastric carcinoma-related gene, ELCOX3.

    abstract::Gastric cancer is a pathological process of an accumulation of multigene and multistage mutations. A new gene segment, MDSCBC11, has been previously obtained using a gene chip and is negatively associated with gastric cancer. The present study aimed to clone the full cDNA sequence of the MDSCBC11 segment and to detect...

    journal_title:Oncology letters

    pub_type: 杂志文章

    doi:10.3892/ol.2013.1595

    authors: Gan R,Liu X,Zhou Y,Tan Y,Liu H,Li G,Tang Y,Xie H

    更新日期:2013-12-01 00:00:00