Abstract:
:The lysyl oxidase gene family members function as extracellular matrix modulating enzymes. We have found that another member of this family, lysyl oxidase related protein-1 (LOR-1), is highly expressed in metastatic breast cancer-derived cell lines but not in the nonmetastatic estrogen-dependent MCF-7 cells. Furthermore, LOR-1 expression in periductal tumor cells of breast carcinomas is significantly correlated with increased tumor malignancy. MCF-7 cells expressing recombinant LOR-1 formed estrogen-dependent tumors that developed much slower than tumors derived from empty vector-transfected MCF-7 cells. The cells of these LOR-1-expressing tumors were surrounded by a high concentration of dense collagen fibers, and the tumors contained many fibrotic foci. Induction of fibrosis in vivo by lysyl oxidase-like enzymes has never been observed before and suggests that LOR-1 may function as an autonomous inducer of fibrosis. The appearance of fibrotic foci in spontaneous breast cancer tumors is correlated with poor prognosis and metastasis, and we, therefore, examined the invasiveness of the LOR-1-expressing tumors. LOR-1-expressing MCF-7 cells invaded the pseudocapsules surrounding the tumors. In contrast, vector-transfected MCF-7 cells did not invade the pseudocapsules. This observation suggests that LOR-1 enhances the malignancy of the tumors. Furthermore, the LOR-1-expressing tumor cells invaded blood vessels, nerves, and muscles adjacent to the tumor, indicating that the LOR-1-expressing MCF-7 cells acquired metastatic properties. We conclude that LOR-1 promotes tumor fibrosis and tumor invasiveness simultaneously, which indicates that these two processes may be associated.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Akiri G,Sabo E,Dafni H,Vadasz Z,Kartvelishvily Y,Gan N,Kessler O,Cohen T,Resnick M,Neeman M,Neufeld Gsubject
Has Abstractpub_date
2003-04-01 00:00:00pages
1657-66issue
7eissn
0008-5472issn
1538-7445journal_volume
63pub_type
杂志文章相关文献
CANCER RESEARCH文献大全abstract::N-Demethylated metabolites of the antineoplastic agent hexamethylmelamine were synthesized, and their toxicities and antitumor activities were determined in vivo. Determinations of the lethal dose for 10% of the male C57BL X DBA/2 F1 (hereafter called BD2F1) mice showed hexamethylmelamine toxicity to be decreased by N...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1975-10-01 00:00:00
abstract::The growth of human melanoma cells FO-1 in nude mice is strongly inhibited or even abrogated when the cells are stably transfected with a plasmid expressing an antisense RNA to the insulin-like growth factor 1 receptor (IGF-1R) RNA, which causes a marked reduction in the number of IGF-1 receptors. When a tumor arises ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1994-09-15 00:00:00
abstract::Molecules that physiologically control cell proliferation are often produced locally in tissues and are rapidly destroyed when they enter circulation. This allows local effects while avoiding interference with other systems. Unfortunately, it also limits the therapeutic use of these molecules via systemic delivery. We...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2002-07-01 00:00:00
abstract::The plasma of dogs afflicted with mammary carcinoma was perfused through chambers bearing Staphylococcus aureus Cowan strain I in an attempt to remove tumor-promoting, immunosuppressive immune complexes from the peripheral blood of these animals. In this canine model of spontaneous mammary carcinoma, reduction of brea...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1982-09-01 00:00:00
abstract::Peripheral lymphocytes from cancer patients receiving mitomycin C treatment were examined for cytogenetic effects. The treatment consisted of i.v. injections of mitomycin C at a dose of 4 mg given twice a week for 2 weeks. The lymphocytes were cultured in vitro for 72 hr with phytohemagglutinin and 5-bromodeoxyuridine...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1980-02-01 00:00:00
abstract::Neuroblastoma (NB) arises from primitive sympathetic neuroblasts in the adrenal gland or the sympathetic ganglion. NB in situ, sometimes observed in the adrenal glands of autopsied infants, is considered to be a premalignant lesion that may develop into NB. Little is understood about the morphological and biochemical ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1987-06-01 00:00:00
abstract::To sustain their proliferation, cancer cells become dependent on one-carbon metabolism to support purine and thymidylate synthesis. Indeed, one of the most highly upregulated enzymes during neoplastic transformation is MTHFD2, a mitochondrial methylenetetrahydrofolate dehydrogenase and cyclohydrolase involved in one-c...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-16-1476
更新日期:2017-02-15 00:00:00
abstract::Murine melanoma B16-F1 cells of low metastatic potential were transfected with the human gene for the prepro form of urokinase in an SV40 expression vector (plasmid pSV2-uPA), and cells expressing high amounts of the human urokinase gene product were selected for by an enzyme-linked immunosorbent assay specific for hu...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1990-12-01 00:00:00
abstract::Reported estimates of ras mutation prevalence in lung adenocarcinoma of 15-24% may be underestimates because of the insensitivity of the assays used. We have devised a rapid, non-radioactive assay for ras mutations, which detects 1 mutant allele/10(3) normal alleles and have used it to study DNA isolated from 53 lung ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1995-04-01 00:00:00
abstract::Murine monoclonal antibodies of the immunoglobulin G2a isotype interact with human effector cells to mediate antibody-dependent cellular cytotoxicity (ADCC) directed against malignant cells which express antigens recognized by these antibodies. gamma-Interferon enhances these effects in vitro. In a Phase I trial of mu...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1988-05-01 00:00:00
abstract::A murine monoclonal antibody 14.18 specifically recognizes disialoganglioside GD2, the major ganglioside expressed on the surface of human neuroblastoma cells. This monoclonal antibody (Mab) is of immunoglobulin G3 isotype, has an affinity constant (KA) of 3.5 X 10(8) M-1, and reacts preferentially with tumor cells an...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1987-02-15 00:00:00
abstract::The altered gene expression seen in cancer could relate to differences in nonhistone chromatin proteins between normal and malignant tumor cells. Phenol-soluble nonhistone chromatin proteins were isolated from human normal and leukemic (chronic lymphocytic leukemia) B-cells, as well as long-term cultured human B-lymph...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1984-05-01 00:00:00
abstract::R24 is an IgG3 mouse monoclonal antibody which recognizes the ganglioside GD3. Two variants of R24, in which one (V2-R24) or both (V1-R24) light chains were substituted by MOPC-21 light chains, were isolated and characterized. R24 had a 40-fold higher avidity for GD3 than either variant, suggesting that high avidity b...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1990-03-01 00:00:00
abstract::We investigated the relationship between DNA cytosine methylation and the expression of two genes associated with resistance to DNA methylation damage. Variants of RajiMex- cells acquired resistance to N-methyl-N-nitrosourea by either reactivating a previously silent O6-methylguanine-DNA methyltransferase (MGMT) gene ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2000-06-15 00:00:00
abstract::Cellular signaling mediated by Notch receptors results in coordinated regulation of cell growth, survival, and differentiation. Aberrant Notch activation has been linked to a variety of human neoplasms. Here, we show that Notch1 signaling drives the vertical growth phase (VGP) of primary melanoma toward a more aggress...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-05-3589
更新日期:2006-04-15 00:00:00
abstract::Although common in hematologic and mesenchymal malignancies, recurrent gene fusions have not been well characterized in epithelial carcinomas. Recently, using a novel bioinformatic approach, we identified recurrent gene fusions between TMPRSS2 and the ETS family members ERG or ETV1 in the majority of prostate cancers....
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-06-0168
更新日期:2006-04-01 00:00:00
abstract::In these studies, Syrian hamster embryo cells (SHE), which were isolated at different stages of neoplastic progression, were used to test the ability of the protein phosphatase inhibitors, okadaic acid and sodium orthovanadate (Na3VO4) to induce neoplastic progression. We observed that these chemicals can induce trans...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1993-04-15 00:00:00
abstract::Although in vivo targeting of tumors using fluorescently labeled probes has greatly gained in importance over the last few years, most of the clinically applied reagents lack tumor cell specificity. Our novel tumor cell-penetrating peptide-based probe (TPP) recognizes an epitope of Hsp70 that is exclusively present on...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-14-0413
更新日期:2014-12-01 00:00:00
abstract::Gastrointestinal adenocarcinomas (GIAC) of the tubular gastrointestinal (GI) tract including esophagus, stomach, colon, and rectum comprise most GI cancers and share a spectrum of genomic features. However, the unified epigenomic changes specific to GIAC are poorly characterized. Using 907 GIAC samples from The Cancer...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-20-0390
更新日期:2020-07-01 00:00:00
abstract::The stress harbored by the solid phase of tumors is known as solid stress. Solid stress can be either applied externally by the surrounding normal tissue or induced by the tumor itself due to its growth. Fluid pressure is the isotropic stress exerted by the fluid phase. We recently showed that growth-induced solid str...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-12-4521
更新日期:2013-07-01 00:00:00
abstract::Previous studies have favored a basic difference in the regulation of specialized protein production by cells derived from the usual tissue of origin (eutopic) and cancer cells derived from a tissue not normally producing the protein (ectopic). Thus N6,O2'-dibutyryl cyclic adenosine 3':5'-monophosphate was believed to...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1980-11-01 00:00:00
abstract::Human peripheral blood lymphocytes (PBL), obtained from patients with a variety of cancers, were incubated in vitro with phytohemagglutinin, concanavalin A, and crude or lectin-free T-cell growth factors. The lectin-activated PBL of nine patients were capable of lysing fresh autologous tumor during a 4-hr 51Cr release...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1982-03-01 00:00:00
abstract::The metastasizing MDAY-D2 tumor of DBA/2 mice disseminates in BALB/c allogeneic athymic nude (nu/nu) mice in a manner identical to that observed in the syngeneic host. Both the kinetics and organ distribution pattern of metastases from s.c. implants of MDAY-D2 are routinely predictable at any given tumor dose. BALB/c ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1979-10-01 00:00:00
abstract::Cobalamin (vitamin B12) binding protein was purified from gastric cancer extracts and from serum-free culture medium of cancer cell line KATOH-III. The molecular weight, determined by immunoprecipitation and sodium dodecyl sulfate-polyacrylamide gel electrophoresis, was 70,000 and the pI was 2.8 to 3.2. From biochemic...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1989-06-01 00:00:00
abstract::Aryl hydrocarbon hydroxylase (AHH) and microsomal cytochromes were measured in tissues of human features aborted by prostaglandins. Cytochrome P-450 concentrations and AHH activity were about 4 times higher in adrenal glands than in liver. AHH was present in testes, ovaries, and vagina and uterus at levels equal to or...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1978-06-01 00:00:00
abstract::The semisynthetic anthracycline, 5-iminodaunorubicin (IM), was investigated to see whether modification of the benzoquinone moiety to produce a drug with low free radical potential would alter the cytotoxic and biochemical characteristics of this drug in comparison to Adriamycin (ADR), an agent with high free radical ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1982-01-01 00:00:00
abstract::Epstein-Barr virus (EBV) infection is associated with immunoblastic B-cell lymphomas in immunosuppressed or human immunodeficiency virus-infected individuals and in SCID mice reconstituted with human peripheral blood leukocytes (hu-PBL-SCID) from EBV-seropositive donors. The risk of tumors appearing in the hu-PBL-SCID...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1992-10-01 00:00:00
abstract::Malignant neuroblastomas contain stem-like cells. These tumors also overexpress the Forkhead box transcription factor FoxM1. In this study, we investigated the roles of FoxM1 in the tumorigenicity of neuroblastoma. We showed that depletion of FoxM1 inhibits anchorage-independent growth and tumorigenicity in mouse xeno...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-10-4087
更新日期:2011-06-15 00:00:00
abstract::Initial studies have identified TSP50 as a human testes-specific gene that is demethylated in breast cancer. In this study, we will present new data related to the TSP50 gene. We have found that the TSP50 gene product shares a similar enzymatic structure with many serine proteases. However, the most critical catalytic...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract::Photodynamic therapy (PDT), an experimental cancer treatment employing a photosensitizer and visible light, is a highly efficient inducer of apoptosis (or programmed cell death) in mouse L5178Y lymphoma cells, resulting in extensive DNA fragmentation within 1-2 h. The major targets for PDT are in cellular membranes, a...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1993-12-15 00:00:00