Abstract:
:We have studied glycosyltransferase activities in human lymphocytes stimulated with the plant mitogens E-phytohemagglutinin or concanavalin A (Con A) and have compared the results with activities found in resting lymphocytes. Compared to resting lymphocytes, Con A-stimulated lymphocytes possess an enhanced capacity to transfer the sugars, sialic acid, galactose, and N-acetyl-glucosamine from their respective nucleotide donors to both endogenous cellular acceptors and added exogenous glycoprotein acceptors. The enhanced glycosyltransferase activity induced by Con A is not inhibited by puromycin despite effective inhibition of de novo protein synthesis, indicating that synthesis of new glycosyltransferase enzymes is not necessary for the observed increases in glycosylation activity. By contrast to the findings in Con A-stimulated cells, the corresponding glycosyltransferase activities of E-phytohemagglutinin-stimulated lymphocytes do not differ from those of unstimulated lymphocytes. These data indicate that individual plant lectins have different effects on the biosynthesis of complex saccharides by cultured human lymphocytes.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Speckart SF,Boldt DH,Ryerson KLsubject
Has Abstractpub_date
1978-12-01 00:00:00pages
4554-61issue
12eissn
0008-5472issn
1538-7445journal_volume
38pub_type
杂志文章相关文献
CANCER RESEARCH文献大全abstract::PD115934 (NSC 366140) is a soluble pyrazoloacridine derivative presently undergoing preclinical toxicology evaluation with the anticipation of Phase I human investigation. The agent displayed both human and murine solid tumor selectivity in vitro in a soft agar disk diffusion assay, relative to its activity against mu...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1990-08-15 00:00:00
abstract::Dickkopf3 (DKK3) is a secretory protein that belongs to the DKK family, but exhibits structural divergence from other family members, and its corresponding receptors remain to be identified. Although DKK3 has been shown to have oncogenic functions in certain cancer types, the underlying mechanism by which DKK3 promote...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-18-1749
更新日期:2018-11-01 00:00:00
abstract::In this study, we examine the potential role of receptor-associated protein 80 (RAP80), a nuclear protein containing two ubiquitin-interacting motifs (UIM), in DNA damage response and double-strand break (DSB) repair. We show that following ionizing radiation and treatment with DNA-damaging agents, RAP80 translocates ...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-07-0924
更新日期:2007-07-15 00:00:00
abstract::Antiestrogen resistance is frequently observed in patients after longterm treatment with tamoxifen, a nonsteroidal antiestrogen widely used for endocrine therapy of breast cancer. In vitro studies in resistant cells showed that the expression of natural estrogen-responsive genes is frequently altered. Using MVLN cells...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2000-08-01 00:00:00
abstract::We previously reported that bone marrows of breast cancer patients contained tumor antigen-specific CD8(+) T cells with central or effector memory phenotype. Using a recently developed ret transgenic mouse melanoma model, we now show that bone marrows and tumors of transgenic mice contain high frequencies of CD8(+) T ...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-08-1464
更新日期:2008-11-15 00:00:00
abstract::On the basis of reports of rat mammary- and pancreas-tumor models, we hypothesized that an increase in consumption of linoleic acid (LA) would also cause an enhancement in mouse skin-tumor promotion. SEN-CAR mice were placed on diets containing 0.8%, 2.2%, 3.5%, 4.5%, 5.6%, 7.0%, or 8.4% LA, 1 week after initiation wi...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1992-04-01 00:00:00
abstract::Estramustine is an estradiol-based antimicrotubule agent that accumulates in malignant glioma cells, resulting in a concentration-dependent inhibition of proliferation. This agent has been shown to synchronize human glioma cells at G2-M consistent with its known effects on the mitotic spindle and potentially could be ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1994-03-15 00:00:00
abstract::Mutations affecting phosphorylation sites in the beta-catenin gene have been implicated in the development of human and rodent hepatocellular carcinomas (HCCs). To further investigate the involvement of this gene in hepatocarcinogenesis, we used several transgenic mouse models of hepatic tumors induced by overexpressi...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2001-03-01 00:00:00
abstract::Mortality or incidence rates of ten major neoplasms in migrants from several countries, their respective countries of origin, their American-born offspring, and United States whites were compared. Rates in succeeding generations of Americans increased most rapidly for colon cancer and most slowly for breast cancer, wi...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1987-11-01 00:00:00
abstract::Hereditary nonpolyposis colorectal cancer (HNPCC) is an autosomal dominant cancer syndrome characterized by early age of onset colorectal cancer (mean 45 years) as well as endometrial, urinary tract, and upper gastrointestinal adenocarcinomas. The HNPCC phenotype has been shown to segregate with germline mutations in ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1997-09-01 00:00:00
abstract::Metastasis requires cytoskeletal remodeling for migration, adhesion, and extravasation of metastatic cells. Although protein kinase C (PKC) is involved in tumor promotion/progression and cytoskeletal remodeling, its role in metastasis has not been defined. PKCdelta levels are increased in highly metastatic 13762NF mam...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1999-07-01 00:00:00
abstract::beta-Lapachone and certain of its derivatives directly bind and inhibit topoisomerase I (Topo I) DNA unwinding activity and form DNA-Topo I complexes, which are not resolvable by SDS-K+ assays. We show that beta-lapachone can induce apoptosis in certain cells, such as in human promyelocytic leukemia (HL-60) and human ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1995-09-01 00:00:00
abstract::Patient-derived xenografts (PDX) are tumor-in-mouse models for cancer. PDX collections, such as the NCI PDXNet, are powerful resources for preclinical therapeutic testing. However, variations in experimental and analysis procedures have limited interpretability. To determine the robustness of PDX studies, the PDXNet t...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-19-3101
更新日期:2020-06-01 00:00:00
abstract::Myeloid-derived suppressor cells (MDSC) represent a primary mechanism of immune evasion in tumors and have emerged as a major obstacle for cancer immunotherapy. The immunoinhibitory activity of MDSC is tightly regulated by the tumor microenvironment and occurs through mechanistic mediators that remain unclear. Here, w...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-19-0880
更新日期:2019-10-01 00:00:00
abstract::Smokers develop metastatic prostate cancer more frequently than nonsmokers, suggesting that a tobacco-derived factor is driving metastatic progression. To identify smoking-induced alterations in human prostate cancer, we analyzed gene and protein expression patterns in tumors collected from current, past, and never sm...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-14-3630
更新日期:2016-03-01 00:00:00
abstract::Integrins interact with extracellular matrix (ECM) and deliver intracellular signaling for cell proliferation, survival, and motility. During tumor metastasis, integrin-mediated cell adhesion to and migration on the ECM proteins are required for cancer cell survival and adaptation to the new microenvironment. Using st...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-08-2515
更新日期:2009-04-15 00:00:00
abstract::As recently characterized, following s.c. implantation into syngeneic C57BL/6 mice, E0771 tumor invades locally into dermal layers and peritoneum, metastasizes to the lung, and induces a nonspecific immunosuppression in the host. Using this breast medullar adenocarcinoma model, a therapy consisting of a single moderat...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-05-3963
更新日期:2006-05-15 00:00:00
abstract::Human erythrocytes have been used as a model for evaluating the chemical carcinogen-plasma membrane interaction. The carcinogenic aromatic amines 2-acetylaminofluorene, dimethylaminoazobenzene, and 3'-methyldimethylaminoazobene stabilize erythrocytes against lysis in hypotonic solution. In general, the stabilization p...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1976-02-01 00:00:00
abstract::Cancer is a leading cause of mortality throughout the world and new treatments are urgently needed. Recent studies suggest that bone marrow-derived mesenchymal stem cells (MSC) home to and incorporate within tumor tissue. We hypothesized that MSCs engineered to produce and deliver tumor necrosis factor-related apoptos...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-08-4698
更新日期:2009-05-15 00:00:00
abstract::Cyclin G1 was identified as a transcriptional target of p53 that encodes a protein with strong homology to the cyclin family of cell cycle regulators. We show that either ectopically expressed or endogenous cyclin G1 protein is very unstable, undergoes modification with ubiquitin, and is likely degraded by the proteas...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-07-6346
更新日期:2008-07-15 00:00:00
abstract::The DNA of L1210 cells exposed to low concentrations of 1-(2-chloroethyl)=3-cyclohexyl-1-nitrosourea has been analyzed for the presence of single-strand breaks. DNA from 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea-treated cells both sediments more slowly than control DNA on alkaline sucrose gradients andshows a great...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1977-07-01 00:00:00
abstract::We recently reported trophic response of transplantable mouse colon cancer cells (MC-26) to pentagastrin, in vivo, and demonstrated gastrin receptors on MC-26 cells, in vitro. In the present study, growth of MC-26 cells in mice, in response to pentagastrin, was studied in relation to binding kinetics and capacity of g...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1986-04-01 00:00:00
abstract::The in vitro growth rates of different classifications of human mammary epithelium were compared. Samples included 4 established breast cell lines and excised tissue or breast fluid cells originating WOMEN FOR 40 DIFFERENT AND comprising 3 classifications: normal, nonmalignant atypical, and malignant. Growth was quant...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1976-10-01 00:00:00
abstract::Ascorbic acid (vitamin C) is known to act as an antimutagen and anticarcinogen in several test systems. However, there is no report of its effect on carcinogen-induced chromosomal damage in vivo in animals. The present study was performed to determine whether or not ascorbic acid affects sister chromatid exchanges (SC...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1986-06-01 00:00:00
abstract::HsRec2/Rad51B is a 350-amino acid protein with a molecular mass of 38,300 Da that appears to be involved in cell cycle regulation and UV-induced apoptosis. The mouse and human genes were isolated based on their homology to a recombinational repair gene from Ustilago maydis and contain functional domains to hRAD51 and ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1998-10-15 00:00:00
abstract::CI-921, an analogue of amsacrine with superior activity against in vivo and in vitro experimental tumor models, has been studied in 16 patients with solid tumors refractory to chemotherapy or for which conventional therapy does not exist. Thirty-nine cycles were given and doses escalated from 39 to 810 mg/m2. This tot...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1988-11-15 00:00:00
abstract::Early growth-response (EGR) genes are nuclear transcription factors that are implicated in regulating cell proliferation. Because these genes show divergent expression in various human tumors, we sought to determine their expression in nonmalignant and malignant prostate tissues. Total RNA extracted from prostate tiss...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1998-06-01 00:00:00
abstract::Obesity enhances breast cancer risk in postmenopausal women and premenopausal women with genetic or familial risk factors. We have shown previously that within breast tissue, obesity increases macrophage-driven inflammation and promotes expansion of luminal epithelial cell populations that are hypothesized to be the c...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-20-0789
更新日期:2020-10-15 00:00:00
abstract::In a preceding paper (D. B. Alexander et al., Cancer Res., 53: 1808-1815, 1993), we demonstrated that the in vitro glucocorticoid inhibition of Con8 mammary tumor cell growth is accompanied by the disruption of a transforming growth factor alpha (TGF-alpha) autocrine loop. This growth suppression response functions in...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1993-04-15 00:00:00
abstract::Subcutaneous inoculation of Epstein-Barr virus (EBV) transformed peripheral blood B-lymphocytes (PBL) from an untreated chronic lymphocytic leukemia (CLL) patient produced progressively growing lethal tumors in 4 of 11 whole body irradiated (440 rads) nude mice. In one tumor bearing mouse there was splenomegaly and ge...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1986-05-01 00:00:00