Abstract:
BACKGROUND:Recent studies have shown dysregulation in TJ structure of several cancers including breast. Claudin-5 is a protein member of the TJ structure expressed in both endothelial and epithelial cells. This study examined the level of expression and distribution of Claudin-5 in human breast cancer tissues and the effect of knockdown and forced expression of Claudin-5 in the MDA-MB-231 breast cancer cell line. METHODS:Immunohistochemistry and quantitative-PCR were used to analyse patient tissue samples. The Claudin-5 gene was cloned and overexpressed or knocked down using ribozyme technology in human breast cancer cells. Changes in function were assessed using in vitro assays for invasion, growth, adhesion, wounding, motility, transepithelial resistance and electric cell-substrate impedance sensing. Changes in cell behaviour were achieved through the use of Hepatocyte Growth factor (HGF) which we have shown to affect TJ function and expression of TJ proteins. In addition, an in vivo model was used for tumour growth assays. Results data was analyzed using a Students two sample t-test and by Two-way Anova test when the data was found to be normalized and have equal variances. In all cases 95% confidence intervals were used. RESULTS:Patients whose tumours expressed high levels of Claudin-5 had shorter survival than those with low levels (p = 0.004). Investigating in vitro the effect of altering levels of expression of Claudin-5 in MDA-MB-231 cells revealed that the insertion of Claudin-5 gene resulted in significantly more motile cells (p < 0.005). Low levels of Claudin-5 resulted in a decrease in adhesion to matrix (p < 0.001). Furthermore, a possible link between Claudin-5 and N-WASP, and Claudin-5 and ROCK was demonstrated when interactions between these proteins were seen in the cells. Moreover, followed by treatment of N-WASP inhibitor (Wiskostatin) and ROCK inhibitor (Y-27632) cell motility was assessed in response to the inhibitors. Results showed that the knockdown of Claudin-5 in MDA-MB-231 masked their response after treatment with N-WASP inhibitor; however treatment with ROCK inhibitor did not reveal any differences in motility in this cell line. CONCLUSIONS:This study portrays a very new and interesting role for Claudin-5 in cell motility involving the N-WASP signalling cascade indicating a possible role for Claudin-5 in the metastasis of human breast cancer.
journal_name
J Exp Clin Cancer Resjournal_title
Journal of experimental & clinical cancer research : CRauthors
Escudero-Esparza A,Jiang WG,Martin TAdoi
10.1186/1756-9966-31-43subject
Has Abstractpub_date
2012-05-04 00:00:00pages
43eissn
0392-9078issn
1756-9966pii
1756-9966-31-43journal_volume
31pub_type
杂志文章abstract::The aim of this study was to investigate serum levels of IL-2, IL-6 and IL-10 in the pretreatment period and to determine if high IL-2, IL-6, IL-10 levels correlate with the outcome in patients with Non-Hodgkin's Lymphoma (NHL) in the post treatment period. Forty-three patients with the diagnosis of aggressive NHL wer...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:2004-09-01 00:00:00
abstract:BACKGROUND:The aim of this study was to investigate the effect of downregulating Hedgehog pathway by GANT61 on human glioma cells, examine the consequent changes of temozolomide (TMZ)-induced effects and explore the molecular mechanisms. METHODS:The cytotoxicity of a Gli1/2 inhibitor, GANT61 was examined both alone an...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-016-0463-3
更新日期:2016-11-28 00:00:00
abstract::This study was conducted to establish a feasible intraperitoneal xenograft model in nude mice which mimicked the dynamic progression of human ovarian cancer and to explore its potential for preclinical trials. A human ovarian tumor line SKOV3 was originally injected s.c. to develop tumors; then the tumors were harvest...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:2007-12-01 00:00:00
abstract::Immunotherapy has become an established pillar of cancer treatment improving the prognosis of many patients with a broad variety of hematological and solid malignancies. The two main drivers behind this success are checkpoint inhibitors (CPIs) and chimeric antigen receptor (CAR) T cells. This review summarizes seminal...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章,评审
doi:10.1186/s13046-019-1266-0
更新日期:2019-06-19 00:00:00
abstract:BACKGROUND:Human placental development resembles tumorigenesis, due to the invasive and fusogenic potential of trophoblasts. However, these features are tightly controlled in trophoblasts. Disturbance of this spatial and temporal regulation is thought to contribute to the rare formation of choriocarcinomas. Promoter hy...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-017-0634-x
更新日期:2017-11-23 00:00:00
abstract:BACKGROUND:Annexin A2 is increased in serous ovarian cancer and plays an essential role in ovarian cancer invasion and metastasis. In combination with S100A10, annexin A2 plays an important role in the plasminogen activator system regulating plasmin production. The aim of this study was to investigate the potential uti...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-018-1017-7
更新日期:2019-01-08 00:00:00
abstract:BACKGROUND:The deubiquitinase USP7 has been identified as an oncogene with key roles in tumorigenesis and therapeutic resistance for a series of cancer types. Recently small molecular inhibitors have been developed to target USP7. However, the anticancer mechanism of USP7 inhibitors is still elusive. METHODS:Cell viab...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-019-1457-8
更新日期:2019-11-15 00:00:00
abstract:BACKGROUND:Gastric cancer remains a major cause of mortality and morbidity worldwide. In recent years, gene-based therapeutic strategies were confirmed promising in cancer inhibition and attracted great attention. RNA interference (RNAi) is a powerful tool for gene therapy and has been widely employed to aid in treatme...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-016-0334-y
更新日期:2016-03-31 00:00:00
abstract:BACKGROUND:Diffuse large B-cell lymphoma (DLBCL) is a heterogeneous group of tumors, with aggressive clinical course that renders prognostication and choice of treatment strategy difficult. Chemo-immunotherapy with rituximab, cyclophosphamide, doxorubicin, vincristine, prednisone (R-CHOP) is the current first-line trea...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-018-0768-5
更新日期:2018-05-02 00:00:00
abstract::Accumulating evidence suggests that radiation treatment causes an adaptive response of lung adenocarcinoma (LUAD), which in turn attenuates the lethal effect of the irradiation. Previous microarray assays manifested the change of gene expression profile after irradiation. Bioinformatics analysis of the significantly c...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-020-01772-y
更新日期:2020-11-23 00:00:00
abstract:BACKGROUND:Ubiquitin-like protein 4A (UBL4A) plays a significant role in protein metabolism and the maintenance of cellular homeostasis. In cancer, UBL4A represses tumorigenesis and is involved in various signaling pathways. Pancreatic ductal adenocarcinoma (PDAC) is still a major cause of cancer-related death and the ...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-019-1278-9
更新日期:2019-07-09 00:00:00
abstract:BACKGROUND:Hippo/YAP pathway is known to be important for development, growth and organogenesis, and dysregulation of this pathway leads to tumor progression.We and others find that YAP is up-regulated in human gliomas and associated with worse prognosis of patients. However, the role and mechanism of YAP in glioma pro...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-017-0606-1
更新日期:2017-09-29 00:00:00
abstract:BACKGROUND:Hepatocellular carcinoma (HCC) is the major histological type of liver cancer with high morbidity and mortality worldwide. Long noncoding RNAs (lncRNA) has been proved to be associated with various cancer types, while its regulation in HCC is largely unknown. METHODS:To figure out the specific role of lncRN...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-019-1128-9
更新日期:2019-04-10 00:00:00
abstract::Proliferative activity in 78 glioma specimens was assessed immunohistochemically by determining proliferating index of tumor cells (PTC-PI) and endothelial cells (PEC-PI) using the MIB-1 monoclonal antibody. The PTC-PI of anaplastic astrocytoma (9.0 +/- 5.8: mean + standard deviation) was significantly higher than tha...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:1997-06-01 00:00:00
abstract:BACKGROUND:Aberrant expression of Wiskott-Aldrich syndrome protein interacting protein family member 1 (WIPF1) contributes to the invasion and metastasis of several malignancies. However, the role of WIPF1 in human pancreatic ductal adenocarcinoma (PDAC) remains poorly understood. METHODS:Human pancreatic cancer sampl...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-018-0848-6
更新日期:2018-07-24 00:00:00
abstract:BACKGROUND:Infection with the hepatitis B virus (HBV) is closely associated with the development of hepatocellular carcinoma (HCC). The osmoregulatory transcription factor nuclear factor of activated T-cells 5 (NFAT5) has been shown to play an important role in the development of many types of human cancers. The role o...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-017-0618-x
更新日期:2017-10-19 00:00:00
abstract::Patients with ulcerative colitis (UC) have a higher incidence of colorectal cancer. UC-associated colorectal cancer is thought to develop in patients with preexisting UC-associated dysplasia. It is crucial to diagnose UC-associated dysplasia and early stage of cancer in patients with long-standing UC for the purpose o...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:2003-03-01 00:00:00
abstract:BACKGROUND:Many factors influence breast cancer progression, including the ability of progenitor cells to sustain or increase net tumour cell numbers. Our aim was to define whether alterations in putative progenitor populations could predict clinicopathological factors of prognostic importance for cancer progression. ...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-30-45
更新日期:2011-04-26 00:00:00
abstract::An amendment to this paper has been published and can be accessed via the original article. ...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 已发布勘误,撤回出版物
doi:10.1186/s13046-020-01746-0
更新日期:2020-11-05 00:00:00
abstract:BACKGROUND:Thyroid cancer is one of the most prevalent malignancies in endocrine system. Further understanding and revealing the molecular mechanism underlying thyroid cancer are indispensable for the development of effective diagnosis and treatments. In the present study, we attempted to provide novel basis for target...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-018-0950-9
更新日期:2018-11-21 00:00:00
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-017-0591-4
更新日期:2017-09-07 00:00:00
abstract::Seventeen adult urologic sarcomas treated at the Oncology Hospital of Ankara in the last ten-year period are described. There were six cases of paratesticular rhabdomyosarcoma (RMS), four cases of liposarcoma (LS), three cases of leiomyosarcoma (LMS); two cases of Kaposi sarcoma limited to glans penis, and only one pr...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章,评审
doi:
更新日期:1997-03-01 00:00:00
abstract:BACKGROUND:Pancreatic ductal adenocarcinoma is one of the leading causes of cancer-related death worldwide. Immune checkpoint blockade therapy, including anti-PD-1 and anti-PD-L1, is a new therapeutic strategy for cancer treatment but the monotherapy with PD-L1 inhibitors for pancreatic cancer is almost ineffective for...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-019-1044-z
更新日期:2019-02-01 00:00:00
abstract:BACKGROUND:Metastasis via the lymphatic system is promoted by lymphangiogenesis. Alterations of the lymphatic channels during the progression of metastasis to regional lymph nodes (LNs) remain unexplored. To examine whether tumor-induced LN lymphangiogenesis controls metastasis to regional LNs, we investigated cervical...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-31-83
更新日期:2012-10-02 00:00:00
abstract::The aim of this study was to assess the nuclear/cytoplasmic (N/C) ratio using computerized image analysis of cervical smears with intraepithelial neoplasia (CIN) grade I to III associated or not with cellular changes of human papillomavirus (HPV) in an attempt to determine if this method is more sensitive for the esti...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:2001-12-01 00:00:00
abstract:BACKGROUND AND AIM:in recent years, Livin, a new member of IAPs family, is found to be a key molecule in cancers. Researchers consider Livin may become a new target for tumor therapy; however, the role of it in bladder cancer is still unclear. The purpose of this article is to investigate Antisense Oligonucleotide (ASO...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-29-63
更新日期:2010-06-03 00:00:00
abstract::The cytogenetic characteristics of osteosarcoma (OS) remain controversial. The establishment of a new human OS cell line may improve the characterization. We report the establishment of a new human osteosarcoma cell line, UTOS-1, from a typical osteoblastic OS of an 18-year-old man. Cultured UTOS-1 cells are spindle-s...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-28-26
更新日期:2009-02-25 00:00:00
abstract:BACKGROUND:The aim of this study was to evaluate the potential association between single nucleotide polymorphisms related response to radiotherapy injury, such as genes related to DNA repair or enzymes involved in anti-oxidative activities. The paper aims to identify marker genes able to predict an increased risk of l...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 临床试验,杂志文章
doi:10.1186/1756-9966-31-7
更新日期:2012-01-24 00:00:00
abstract:BACKGROUND:Expression of the Sp1 transcription factor is induced by hypoxia, and the ADAM17 promoter contains predicted Sp1 binding sites. ADAM17 contributes to hypoxic-induce invasiveness of glioma. In this study, we investigated whether Sp1 transcription factor induces ADAM17 and/or contributes to tumor cell invasive...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-28-129
更新日期:2009-09-22 00:00:00
abstract::Metastatic colorectal carcinoma (CRC) has an inevitable fatal outcome except in a small percentage of selected patients, approximately 10-20%, with good prognosis after successful complete operative removal of the liver metastases. In patients not eligible for surgical resection of the liver metastases, chemotherapy i...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:2006-09-01 00:00:00