Abstract:
:We have compared the pattern of surface antigen expression, as detected by monoclonal antibodies (mAbs), in plasma membranes vs shed membrane vesicles of two human breast carcinoma cell lines, MCF-7 and 8701-BC. Antigen expression was detected on cells by immunofluorescence (IF) analysis, whilst, due to their small dimensions, the same technique was not applicable to vesicles. For these structures dot-blot analysis and immunoelectron microscopy (IEM) were employed. When applicable, both cell membranes and membrane vesicles were immunoprecipitated and the precipitate (IP) was analyzed by SDS-PAGE. Cells of both lines expressed HLA class I antigens, epithelial cytokeratins, beta 1 integrins, CEA and the glycoprotein detected by mAb 19.9, but only MCF-7 cells expressed Lewis Y, episialin and globo-H antigens and only 8701-BC cells expressed folate receptor. Membrane vesicles of both cell lines appeared to be rich in beta 1, alpha 3 and alpha 5 integrin chains, expressed HLA class I antigens and carried most of the plasma membrane antigens found in the cell membranes. Overall we have analyzed 17 antigens on the two cell lines and on their vesicles. The results obtained for cells (IF and IP) and those for vesicles (dot-blot and IP) were generally concordantly positive or concordantly negative. We obtained a total of 26 clearly concordant combinations on 34 analyses. In three cases we found discordant results, whereas in the remaining combinations we observed slight reactivity and we found difficulties in determining concordance. Discordant results concerned the expression of the following antigens: folate receptors, which were clearly expressed in 8701-BC cells but not detected by dot-blot analysis or IEM on their shed membrane vesicles; neu (c-erb-B2) receptor found in MCF-7 cell membranes but not in their vesicles; and the globo-H antigen recognized by mAb MBr1, detected at low levels on 8701-BC plasma membranes but undetectable on their membrane vesicles. Like vesicles shed in vitro by cultured cells, the vesicles shed in vivo by human breast carcinoma cells could be tagged with several antibodies against tumor-associated antigens. The vesicles shed in vivo were found in association with a fiber network. Some of the fibers had the characteristic fibrin periodicity. These data suggest that tumor markers detected in the circulation of carcinoma patients, at least in part, are carried by shed membrane vesicles. Moreover the observation that membrane vesicles carry both tumor-associated antigens and HLA class I molecules indicate that these structures could in principle present antigens to the immune system.(ABSTRACT TRUNCATED AT 400 WORDS)
journal_name
Clin Exp Metastasisjournal_title
Clinical & experimental metastasisauthors
Dolo V,Adobati E,Canevari S,Picone MA,Vittorelli MLdoi
10.1007/BF00133483subject
Has Abstractpub_date
1995-07-01 00:00:00pages
277-86issue
4eissn
0262-0898issn
1573-7276journal_volume
13pub_type
杂志文章abstract::The urokinase-type plasminogen activator (UPA) and its inhibitor PAI-1 are thought to play an important part in gastric cancer (GC) invasion and metastasis. Little is known about the behavior and prognostic impact of the receptor for UPA (UPAR). The aims of the present study were: (1) to measure UPAR, UPA and PAI-1 le...
journal_title:Clinical & experimental metastasis
pub_type: 临床试验,杂志文章
doi:10.1023/a:1018454305889
更新日期:1997-07-01 00:00:00
abstract::Platelet-derived growth factor BB (PDGF BB) and the PDGF receptor beta are expressed on mesothelioma cells, but their biological function has not yet been defined. In the present study we used Boyden chambers fitted with filters coated with the adhesive matrix proteins fibronectin, laminin, collagen type IV or the non...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1023/a:1006542301794
更新日期:1998-08-01 00:00:00
abstract::The interaction between circulating tumor cells and blood components, mainly platelets, plays an important role during metastasis. In this study, we prepared liposomes containing the platelet aggregation inhibitor Cilostazol (Cil-L). The objective of this study was to investigate the effect of this Cil-L on platelet a...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-009-9299-y
更新日期:2010-01-01 00:00:00
abstract::Hepatocellular carcinoma (HCC) is one of the most common cancers worldwide with increasing incidence. Despite curative surgical resection and advanced chemotherapy, its survival rate remains low. The presence of microvascular invasion and occult metastasis is one of the major causes for this poor outcome. MDM2 Binding...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-015-9706-5
更新日期:2015-04-01 00:00:00
abstract::Cancer cells with the surface marker profile CD44+/CD24- have previously been described to possess cancer stem cell-like properties. This manuscript evaluates those properties in ovarian cancer cell lines. The proportion of CD44+/CD24- cells corresponded to the clinical aggressiveness of each ovarian cancer cell line ...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-012-9482-4
更新日期:2012-12-01 00:00:00
abstract::Human fibrosarcoma HT1080 cell surface phenotype analysis revealed the expression of "cluster of differentiation 15" (CD15) antigen and to a lesser extent, of "very late antigen-4" (VLA-4). Expression of "endothelial-leukocyte adhesion molecule-1" (ELAM-1) was negligible on resting human umbilical vascular endothelial...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1023/a:1018487213157
更新日期:1997-11-01 00:00:00
abstract::Repeated administration of the hepatic lectin blocking agents D-galactose or arabinogalactan completely prevented the settling of metastatic cells of sarcoma L-1 tumor in the liver of Balb/c mice and greatly reduced the colonization process of highly metastatic ESb lymphoma cells of the liver of DBA/2 mice. Therefore,...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/BF01784842
更新日期:1988-03-01 00:00:00
abstract::Recent studies have indicated that KHT fibrosarcoma or B16 melanoma cell variants capable of forming experimental metastases in the lungs of mice after i.v. injection are created stochastically at high rates (approximately 10(-5)/cell/generation). Expression of this phenotype is unstable and hence expanding population...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/BF00117930
更新日期:1986-07-01 00:00:00
abstract::Proliferation capacity and MHC class I antigen expression of two Lewis lung carcinoma (3LL) metastatic variants (C87, BC215) grown under defined experimental conditions (serum-free defined medium or 10 per cent serum) have been studied following exposure to MoAb 135-13C which recognizes on these cells a tumor surface ...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/BF02057180
更新日期:1989-01-01 00:00:00
abstract::The cancer preventive properties of grape products such as red wine have been attributed to polyphenols enriched in red wine. However, much of the studies on cancer preventive mechanisms of grape polyphenols have been conducted with individual compounds at concentrations too high to be achieved via dietary consumption...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-009-9250-2
更新日期:2009-01-01 00:00:00
abstract::Circulating microRNAs have been described as head and neck cancer biomarkers in multiple anatomical subsites including the oral cavity, nasopharynx, larynx, salivary glands and the skin. While there is an expanding volume of published literature showing the significance of individual or panels of microRNAs, the clinic...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章,评审
doi:10.1007/s10585-019-09961-6
更新日期:2019-06-01 00:00:00
abstract::Although the loss of sulfomucins was known as an indicator of carcinogenesis and malignant progression of colonic epithelia, it was not known whether the loss was directly related to the malignant behavior of colon carcinoma cells. We have studied the biological properties of LS174T human colon carcinoma cells before ...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1023/a:1006654027742
更新日期:1999-03-01 00:00:00
abstract::We previously reported that the adhesion of gastric carcinoma cells to the peritoneum mediated by the alpha3beta1 integrin-laminin interaction is a key step in the initial process of peritoneal metastatic dissemination. Carcinoma cells subsequently invade through the intercellular gaps of mesothelial linings. In this ...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-010-9314-3
更新日期:2010-04-01 00:00:00
abstract::ECA109 human oesophageal carcinoma cells were injected either subcutaneously or intraperitoneally into BALB/CATc 1-nu/nu mice. After 23 weeks tumours were examined histologically and by scanning electron microscopy. Subcutaneous ECA109 tumours were well-delineated without signs of invasion. By contrast, intra-abdomina...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/BF00132927
更新日期:1984-07-01 00:00:00
abstract::Development of central nervous system (CNS) metastases in breast cancer (BC) is associated with poor prognosis. The incidence of CNS metastases in metastatic BC is reported to be about 10-16 %, but different subtypes of BC are associated with different risk of developing CNS metastases. We retrospectively analysed the...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-013-9594-5
更新日期:2013-12-01 00:00:00
abstract::Single cell progenies (SCPs) inherit biological properties from their isogenetic mother cells. If a single cancer cell can give rise to progenies, which can be passaged sustainably in vitro and produce tumor in xenotransplantation, the cell should be cancer initiating cell. CD133 (Prominin-1, Prom1) is the marker of h...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-010-9341-0
更新日期:2010-10-01 00:00:00
abstract::Breast cancer (BC) is the most common cancer affecting women in the United States and metastatic breast cancer is the leading cause of death. The role estradiol plays in ER-positive BC is well-documented, but the way it contributes to ER-negative BC remains unclear. In the present study, we utilized an experimental mo...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-012-9559-0
更新日期:2013-08-01 00:00:00
abstract::The milieu of the liver, and in particular hepatocyte-derived extracellular matrix (hECM), is a critical factor regulating development of liver metastases of colorectal cancer (CRC) cells. The present study has investigated genes altered by hECM in CRC cells and particularly by heparan sulfate chains of hepatocyte pro...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-012-9527-8
更新日期:2013-02-01 00:00:00
abstract::Electrochemotherapy (ECT) is a novel treatment for recurrent or in-transit unresectable melanoma metastases based on the administration of anti-neoplastic drugs followed by cancer cell electroporation. Whether ECT can also induce anti-tumour immunity is unclear. We addressed this issue investigating the presence of de...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-012-9505-1
更新日期:2013-01-01 00:00:00
abstract::We performed repetitive molecular staging using, nested rt-PCR for PSA and PSM at the peripheral blood (PB) and bone marrow (BM) of patients with prostate cancer (Pr.Ca) and benign prostate hyperplasia (BPH) after transrectal ultrasonography-guided biopsy (TRUS-B; 6-9 biopsies/patient), Pr.Ca patients after radical pr...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1023/a:1006783330996
更新日期:1999-01-01 00:00:00
abstract::Estrogen (E2)-dependent ER+ breast cancer, the most common breast cancer subtype, is also the most likely to metastasize to bone and form osteolytic lesions. However, ER+ breast cancer bone metastasis human xenograft models in nude mice are rarely studied due to complexities associated with distinguishing possible tum...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-019-10012-3
更新日期:2020-04-01 00:00:00
abstract::MACC1 (metastasis associated in colon cancer 1) is a key driver that induces metastasis in colon cancer. However, the mechanisms by which MACC1 expression is transcriptionally regulated and the factors enriched at the MACC1 promoter remain largely unknown. The binding of proteins to specific DNA sites in the genome is...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-020-10045-z
更新日期:2020-08-01 00:00:00
abstract::To study the tumor cell autonomous processes of metastasis, an in vivo tumor metastasis model is required that excludes the involvement of the innate immune system. For this purpose we used the established syngeneic MTLn3 cell - Fischer 344 tumor model. MTLn3 cells are efficiently eradicated by NK cells in vivo. Using...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-007-9075-9
更新日期:2007-01-01 00:00:00
abstract::Intravenous infusions of perfluorochemical emulsions, combined with administration of inspired oxygen or carbogen have been found to improve tumor oxygenation and increase the response of solid tumors in animals to radiotherapy. Fluosol-DA 20 per cent, the only perfluorochemical emulsion currently approved for testing...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/BF00053472
更新日期:1986-01-01 00:00:00
abstract::We previously isolated thymosin beta15 from highly metastatic Dunning rat prostatic carcinoma cells. Immunohistochemical study of human prostate cancer specimens revealed a general correlation between Gleason grade and thymosin beta15 expression, with high-grade (more malignant) tumors showing increased staining compa...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1023/a:1006540824969
更新日期:1998-04-01 00:00:00
abstract::The chemokine CXCL12/SDF-1 and its receptors CXCR4 and CXCR7 play a major role in tumor invasion, proliferation and metastasis. Since both receptors are overexpressed on distinct tumor cells and on the tumor vasculature, we evaluated their potential as targets for detection of cancers by molecular imaging. We synthesi...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-011-9403-y
更新日期:2011-12-01 00:00:00
abstract:BACKGROUND:Metastasis to bone from endometrial adenocarcinoma is rare, when metastasises it usually locates in axial skeleton. Metastasis to extremities is extremely rare. Additionally the detection of the bone metastasis as a presenting feature is uncommon. In the present study we report the 10th cases of bone metasta...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-007-9061-2
更新日期:2007-01-01 00:00:00
abstract::Use of heparin derivatives in several cancer types revealed that anticoagulant therapies have a beneficiary side effect: delay of tumor progression. Since there are no data on human melanoma, we have analyzed the effect of heparins in preclinical models. Neither unfractionated heparin (UFH), nor its low molecular weig...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-005-3859-6
更新日期:2005-01-01 00:00:00
abstract::We have previously reported that induction of MMP-2 activation by Concanavalin A (ConA) in MDA-MB-231 human breast cancer cells involves both transcriptional and post-transcriptional mechanisms, and that the continuous presence of ConA is required for MMP-2 activation (Yu et al. Cancer Res, 55, 3272-7, 1995). In an ef...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1023/a:1006580406314
更新日期:1998-02-01 00:00:00
abstract::Pancreatic ductal adenocarcinoma (PDAC) is an aggressive malignancy with poor prognosis, particularly for patients with metastatic disease. Treatment for oligometastatic presentation has been reported in recent literature, but the role of intraperitoneal chemotherapy for patients with peritoneal metastases (PM) remain...
journal_title:Clinical & experimental metastasis
pub_type: 杂志文章,评审
doi:10.1007/s10585-021-10074-2
更新日期:2021-01-24 00:00:00