Abstract:
BACKGROUND:Tumor tissue resembles chronically inflamed tissue. Since chronic inflammatory conditions are a strong stimulus for bone marrow-derived cells (BMDCs) it can be assumed that recruitment of BMDCs into cancer tissue should be a common phenomenon. Several data have outlined that BMDC can influence tumor growth and metastasis, e.g., by inducing a paracrine acting feedback loop in tumor cells. Likewise, cell fusion and horizontal gene transfer are further mechanisms how BMDCs can trigger tumor progression. RESULTS:Hygromycin resistant murine 67NR-Hyg mammary carcinoma cells were co-cultivated with puromycin resistant murine BMDCs from Tg(GFPU)5Nagy/J mice. Isolation of hygromycin/puromycin resistant mBMDC/67NR-Hyg cell clones was performed by a dual drug selection procedure. PCR analysis revealed an overlap of parental markers in mBMDC/67NR-Hyg cell clones, suggesting that dual resistant cells originated by cell fusion. By contrast, both STR and SNP data analysis indicated that only parental 67NR-Hyg alleles were found in mBMDC/67NR-Hyg cell clones favoring horizontal gene transfer as the mode of origin. RealTime-PCR-array analysis showed a marked up-regulation of Abcb1a and Abcb1b ABC multidrug transporters in mBMDC/67NR-Hyg clones, which was verified by Western Blot analysis. Moreover, the markedly increased Abcb1a/Abcb1b expression was correlated to an efficient Rhodamine 123 efflux, which was completely inhibited by verapamil, a well-known Abcb1a/Abcb1b inhibitor. Likewise, mBMDCs/67NR-Hyg clones revealed a marked resistance towards chemotherapeutic drugs including 17-DMAG, doxorubicin, etoposide and paclitaxel. In accordance to Rhodamine 123 efflux data, chemotherapeutic drug resistance of mBMDC/67NR-Hyg cells was impaired by verapamil mediated blockage of Abc1a/Abcb1b multidrug transporter function. CONCLUSION:Co-cultivation of mBMDCs and mouse 67NR-Hyg mammary carcinoma cells gave rise to highly drug resistant cells. Even though it remains unknown whether mBMDC/67NR-Hyg clones originated by cell fusion or horizontal gene transfer, our data indicate that the exchange of genetic information between two cellular entities is crucial for the origin of highly drug resistant cancer (hybrid) cells, which might be capable to survive chemotherapy.
journal_name
Cancer Cell Intjournal_title
Cancer cell internationalauthors
Nagler C,Hardt C,Zänker KS,Dittmar Tdoi
10.1186/1475-2867-11-21subject
Has Abstractpub_date
2011-06-28 00:00:00pages
21issue
1issn
1475-2867pii
1475-2867-11-21journal_volume
11pub_type
杂志文章abstract:BACKGROUND:CircRNAs play crucial roles in multiple tumours. However, the functions of most circRNAs in cervical cancer remain unclear. METHODS:This study collected GSE113696 data from the GEO database to search for differentially expressed circRNAs in cervical cancer. Quantitative reverse transcription PCR was used to...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-020-01736-4
更新日期:2021-01-07 00:00:00
abstract:BACKGROUND:SATB1 is a nuclear protein that has been recently reported to be a 'genome organizer' which delineates specific epigenetic modifications at target gene loci, directly up-regulating metastasis-associated genes while down-regulating tumor-suppressor genes. In this study, the level of mRNA expression of SATB1 a...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/1475-2867-9-18
更新日期:2009-07-30 00:00:00
abstract:BACKGROUND:Celecoxib is a selective cyclooxygenase (COX)-2 inhibitor that has been reported to reduce the risk of breast cancer. In our previous study, celecoxib induced apoptosis and caused cell cycle arrest at the G0/G1 phase in the breast cancer cell line MDA-MB-231, and its effects were mediated by downregulation o...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/1475-2867-13-14
更新日期:2013-02-12 00:00:00
abstract:BACKGROUND:The thieno[2,3-b]pyridines were discovered by virtual high throughput screening as potential inhibitors of phospholipase C (PLC) isoforms and showed potent growth inhibitory effects in National Cancer Institute's human tumour cell line panel (NCI60). The mechanism of the anti-proliferative activity of thieno...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-016-0293-6
更新日期:2016-03-10 00:00:00
abstract:OBJECTIVE:To explore the relationship between tumor necrosis factor receptor-associated factor 6 (TRAF6) and the clinicopathological features in HCC as well as its biological function. METHODS:Totally, 412 liver tissues were collected, including 171 hepatocellular carcinoma (HCC) and their corresponding non-tumor tiss...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-016-0352-z
更新日期:2016-09-29 00:00:00
abstract:BACKGROUND:Liver cancer is one of the most frequent cancers in the world. Targeted therapy of cancer with specific inhibitors is developing and has shown promising antitumor efficacy. CCI-779 (temsirolimus), a specific inhibitor of mTOR (mammalian target of rapamycin), can block the mTOR signaling pathway. Here, we sys...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/1475-2867-13-30
更新日期:2013-03-28 00:00:00
abstract::Pancreatic cancer is one of the leading causes of cancer-related deaths worldwide and is characterized by highly hypoxic tumor microenvironment. Hypoxia-inducible factor-1 alpha (HIF-1α) is a major regulator of cellular response to changes in oxygen concentration, supporting the adaptation of tumor cells to hypoxia in...
journal_title:Cancer cell international
pub_type: 杂志文章,评审
doi:10.1186/s12935-020-01370-0
更新日期:2020-06-24 00:00:00
abstract:Background:Oxidative stress is responsible for some alterations in the chemical structure and, consequently, in the function of proteins, lipids, and DNA. Recent studies have linked oxidative stress to cancers, particularly thyroid cancer, but the mechanisms remain unclear. Here, we further characterize the role of oxi...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-018-0504-4
更新日期:2018-01-15 00:00:00
abstract::[This corrects the article DOI: 10.1186/s12935-019-0742-0.]. ...
journal_title:Cancer cell international
pub_type: 杂志文章,已发布勘误
doi:10.1186/s12935-019-0797-y
更新日期:2019-04-11 00:00:00
abstract:Background:T-acute lymphoblastic leukemia (T-ALL) was a hematological malignancy characterized by the accumulation of immature T cells in bone marrow and peripheral blood. In this study, we tried to explore the physiological role of CD59 in T-ALL. Methods:In this study, we collected the bone marrow samples from 17 T-A...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-018-0714-9
更新日期:2019-01-08 00:00:00
abstract:BACKGROUND:Curcumin, a natural compound derived from the turmeric rhizome Curcuma longa Linn, has anticancer and chemoresistance reduction biological activities. We evaluated the efficacy of curcumin in sensitizing chemotherapy drugs through regulation of Bcl-2-mediated apoptosis in breast cancer stem-like cells (BCSCs...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-017-0453-3
更新日期:2017-09-26 00:00:00
abstract:Background:Sarcomas are malignant heterogeneous tumors of mesenchymal derivation. Dedifferentiated liposarcoma (DDLPS) is aggressive with recurrence in 80% and metastasis in 20% of patients. We previously found that miR-133a was significantly underexpressed in liposarcoma tissues. As this miRNA has recently been shown ...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-018-0583-2
更新日期:2018-06-26 00:00:00
abstract:Background:Pancreatic cancer (PC) remains one of the most aggressive cancers worldwide. However, genetic factors underlying PC susceptibility remain largely unclear. Long noncoding RNA (lncRNA) HOX transcript antisense RNA (HOTAIR) acts as an oncogene and its genetic variation has been linked to many cancers. However, ...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-019-0761-x
更新日期:2019-02-28 00:00:00
abstract:Background and aims:microRNAs (miRNAs) have been reported to regulate proliferation and migration by down-regulating the expression of target genes. The aims of this study were to investigate whether miR-4316 inhibited proliferation and migration by downregulating vascular endothelial growth factor A (VEGF-A) and its c...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-020-1132-3
更新日期:2020-02-22 00:00:00
abstract:BACKGROUND:Blockade of the angiotensin (ANG) II type 1 receptor (AT1R) inhibits tumour growth in several cancers, including colorectal cancer (CRC) liver metastases. While AT1R blockade has been extensively studied, the potential of targeting the antagonistically acting AT2R in cancer has not been investigated. This st...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/1475-2867-10-19
更新日期:2010-06-28 00:00:00
abstract:Background:Breast cancer is one of the most common malignancy among females from the worldwide cancer incidence statistics. Peroxisome gamma coactivator-1β (PGC-1β) has long been identified to be involved in this type of tumorigenesis. However, the mechanisms of PGC-1β in human breast cancer have not been fully underst...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-019-0810-5
更新日期:2019-04-11 00:00:00
abstract:Background:Colorectal cancer (CRC) is one of the most common malignant tumors in the world. Siah E3 ubiquitin protein ligase 1 (Siah1) has been identified as a tumor suppressor gene and plays an important role in the development of malignant tumors. However, the potential role and molecular mechanism of Siah1 in the de...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-020-1124-3
更新日期:2020-02-13 00:00:00
abstract:BACKGROUND:Prostate cancer progression to androgen independence is the primary cause of mortality by this tumor type. The IGF-1/IGF-1R axis is well known to contribute to prostate cancer initiation, but its contribution to invasiveness and the downstream signalling mechanisms that are involved are unclear at present. ...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/1475-2867-8-10
更新日期:2008-07-03 00:00:00
abstract:Background:Extracellular ATP (eATP) was shown to induce epithelial-mesenchymal transition (EMT), a very important early process in metastasis, in cancer cells via purinergic receptor signaling. However, the exact induction mechanisms are far from fully known. We previously described that eATP is internalized by cancer ...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-019-0973-0
更新日期:2019-10-01 00:00:00
abstract:BACKGROUND:Germline mutations in the von Hippel-Lindau (VHL) tumor suppressor gene predispose individuals to clear cell renal carcinomas, hemangioblastomas, and pheochromocytomas. The VHL gene product forms an ubiquitin E3 ligase complex, with regulation of hypoxia-inducible factor alpha (HIF-α) as its best known funct...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-015-0175-3
更新日期:2015-02-22 00:00:00
abstract:Background:Despite improvements in nasopharyngeal carcinoma (NPC) treatment, patients with recurrence and metastasis still have a poor prognosis. Thus, the identification of novel biomarkers is urgently needed to predict outcomes and tailor treatment for NPC. Methods:Four data sets were downloaded from Gene Expression...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-020-01587-z
更新日期:2020-10-12 00:00:00
abstract:BACKGROUND:Mutational inactivation of the von Hippel-Lindau (VHL) tumor suppressor gene has been linked to hereditary as well as sporadic clear cell renal carcinomas. The product of the VHL gene, pVHL, acts to target hypoxia-inducible factor alpha (HIF-alpha) subunits for ubiquitination and subsequent degradation. Usin...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/1475-2867-7-13
更新日期:2007-06-28 00:00:00
abstract:BACKGROUND:Abnormal proliferation, metastasis and epithelial-mesenchymal transformation (EMT) of lens epithelial cells (LECs) are direct factors of posterior capsular opacification (PCO). Nuclear enriched abundant transcript 1 (NEAT1) has been shown to promote cell proliferation, metastasis and EMT, but whether it affe...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-020-01619-8
更新日期:2020-10-31 00:00:00
abstract:Background:Recent studies have demonstrated that the kallikrein and kallikrein-related peptidases (KLKs) exhibit aberrant expression in patients with colorectal cancer (CRC) and might be considered as potential prognostic biomarkers of CRC. However, inconsistent findings have been reported, which promote us to summariz...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-020-01350-4
更新日期:2020-06-22 00:00:00
abstract:BACKGROUND:We studied the role of caspase-2 in apoptosis induction by taxanes (paclitaxel, novel taxane SB-T-1216) in breast cancer cells using SK-BR-3 (nonfunctional p53, functional caspase-3) and MCF-7 (functional p53, nonfunctional caspase-3) cell lines. RESULTS:Both taxanes induced apoptosis in SK-BR-3 as well as ...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/1475-2867-13-42
更新日期:2013-05-15 00:00:00
abstract:BACKGROUND:Gastric carcinoma (GC) is currently one of the most common malignant tumors of the digestive system, and gastric precancerous lesions play a vital role in studying the mechanism of GC. Multiple microRNAs (miRNAs) have been documented to be potential biomarkers to indicate progression of gastric precancerous ...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-020-01578-0
更新日期:2020-11-13 00:00:00
abstract:BACKGROUND:While some risk factors for breast cancer are well-known, the influence of other factors, particularly virus infection, remains unclear. Human cytomegalovirus (HCMV) is widespread in the general population, and both molecular and epidemiological evidence has indicated links between HCMV and breast cancer. Th...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-017-0399-5
更新日期:2017-02-13 00:00:00
abstract:Background:Tumor necrosis factor-α (TNF-α) immunotherapy controls the progression of human cervical cancer. Here, we explored the detailed molecular mechanisms played by melatonin in human cervical cancer (HeLa cells) death in the presence of TNF-α injury, with a particular attention to the mitochondrial homeostasis. ...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-019-0777-2
更新日期:2019-03-14 00:00:00
abstract:Background:In addition to morphological and cytogenetic features, acute myeloid leukemias are characterized by mutations that can be used for target-therapy; also the minimal/measurable residual disease (MRD) could be an important prognostic factor. The purpose of this retrospective study was to investigate if somatic ...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/s12935-019-0807-0
更新日期:2019-04-04 00:00:00
abstract:BACKGROUND:Mammaglobin (MAM) has been used as a specific molecular marker for breast cancer diagnosis. Recently, several groups of researchers proposed a number of therapeutic strategies targeting this molecule. Some of the strategies are based upon an essential but not demonstrated hypothesis - mammaglobin is associat...
journal_title:Cancer cell international
pub_type: 杂志文章
doi:10.1186/1475-2867-9-8
更新日期:2009-03-23 00:00:00