Abstract:
:Tuberin is the protein product of the tuberous sclerosis-2 (TSC2) gene, which is associated with tuberous sclerosis (TSC), a human genetic syndrome characterized by the development of tumors in a variety of tissues. We have previously shown that tuberin is a widely expressed 180 kDa protein which exhibits specific GTPase activating activity in vitro towards the Ras-related Rap1 protein. In this study we have used affinity-purified antibodies against tuberin to analyse its expression in human and rat tissues and to examine its subcellular localization. Tuberin expression was detected in all adult human tissues tested, with the highest levels found in brain, heart and kidney, organs that are commonly affected in TSC patients. By contrast, in adult rats the highest levels of tuberin were found in brain, liver and testis. Indirect immunofluorescence of tuberin in various cultured cell lines revealed a punctate, mostly perinuclear staining pattern. Double-indirect immunofluorescence analysis with anti-tuberin sera and antisera against known Golgi markers (mannosidase-II and furin) revealed that the staining of tuberin was consistent with its localization in the stacks of the Golgi apparatus. In support of this, treatment of cells with brefeldin A, a drug known to cause disassembly of the Golgi apparatus, abolished the perinuclear staining of tuberin. Moreover, conventional and confocal immunofluorescence demonstrated co-localization of tuberin with Rap1, which has previously been localized to the Golgi apparatus. The co-localization of tuberin and Rap1 in vivo strengthens the likelihood that the in vitro catalytic activity of tuberin toward Rap1 plays a physiologically relevant role in the tumor suppressor function of tuberin.
journal_name
Oncogenejournal_title
Oncogeneauthors
Wienecke R,Maize JC Jr,Shoarinejad F,Vass WC,Reed J,Bonifacino JS,Resau JH,de Gunzburg J,Yeung RS,DeClue JEsubject
Has Abstractpub_date
1996-09-05 00:00:00pages
913-23issue
5eissn
0950-9232issn
1476-5594journal_volume
13pub_type
杂志文章相关文献
ONCOGENE文献大全abstract::A flow cytometric assay was developed to examine the expression of the cellular myc oncogene in relation to cell cycle in individual cells. C-myc-oncoprotein was detected by indirect immunofluorescence using a purified sheep polyclonal antibody, anti-human-myc. Specific binding of anti-human-myc was measured by flow c...
journal_title:Oncogene
pub_type: 杂志文章
doi:
更新日期:1988-10-01 00:00:00
abstract::Environmental signals in the cellular milieu such as hypoxia, growth factors, extracellular matrix (ECM), or cell-surface molecules on adjacent cells can activate signaling pathways that communicate the state of the environment to the nucleus. Several groups have evaluated gene expression or signaling pathways in resp...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1204972
更新日期:2001-11-15 00:00:00
abstract::Exposure of normal adult human skin to doses of UV irradiation that induced mild sunburn resulted in the rapid appearance of p53 protein in the epidermis and superficial dermal fibroblasts. Immunohistological analysis with a panel of antibodies established that while p53 staining was not seen in normal skin it appeare...
journal_title:Oncogene
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract::Simian virus 40 (SV40) is a small DNA tumor virus whose early region gene product, large T antigen, is sufficient to immortalize primary rodent cells and transform established rodent cell lines. Three functional domains of large T antigen are required for transformation of the rat embryo fibroblast REF 52 cell line: t...
journal_title:Oncogene
pub_type: 杂志文章
doi:
更新日期:1995-12-07 00:00:00
abstract::B-cell-specific Moloney murine leukemia virus integration site 1 (BMI1) is a component of the polycomb repressive complex 1 (PRC1) complex that is overexpressed in breast and other cancers, and promotes self-renewal of cancer stem-like cells. The oncogenic mucin 1 (MUC1) C-terminal (MUC1-C) subunit is similarly overex...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/onc.2016.439
更新日期:2017-05-18 00:00:00
abstract::One-carbon metabolism plays a central role in a broad array of metabolic processes required for the survival and growth of tumor cells. However, the molecular basis of how one-carbon metabolism may influence RNA methylation and tumorigenesis remains largely unknown. Here we show MTHFD2, a mitochondrial enzyme involved...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/s41388-019-0869-4
更新日期:2019-08-01 00:00:00
abstract::Testicular germ cell tumours are classified into two major histological subgroups, seminomas and nonseminomas. All tumours display several recurrent chromosomal aberrations, but few target genes have been identified. Previous studies have shown that genome-wide hypermethylation of CpG islands is significantly more pre...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1205978
更新日期:2002-12-12 00:00:00
abstract::MicroRNAs (miRNAs), small non-coding RNAs that regulate gene expression post-transcriptionally, are involved in many complex cellular processes. Several miRNAs are differentially expressed in hematopoietic tissues and play important roles in normal differentiation, but, when aberrantly regulated, contribute to the abn...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/onc.2012.398
更新日期:2013-08-01 00:00:00
abstract::Appropriate expression of HTLV-1 genes requires transcriptional transactivation by Tax and post-transcriptional regulation by Rex, both mediated by LTR encoded RNA sequences. Using a combination of deletion mutagenesis, Rex-reporter CAT assays, fluorescence in situ hybridization (FISH) and confocal laser scanning micr...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1201884
更新日期:1998-06-25 00:00:00
abstract::Early growth response-1 (Egr-1) is overexpressed in human prostate tumors and contributes to cancer progression. On the other hand, mutation of p53 is associated with advanced prostate cancer, as well as with metastasis and hormone independence. This study shows that in prostate cell lines in culture, Egr-1 overexpres...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/onc.2010.24
更新日期:2010-05-06 00:00:00
abstract::An early event of cell migration is characterized as the rapid reorganization of the actin cytoskeleton. Recently, we have demonstrated that rapamycin inhibits tumor cell motility. To understand the underlying mechanism, this study was set to determine whether rapamycin inhibition of cell motility is related to its pr...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/onc.2008.137
更新日期:2008-08-28 00:00:00
abstract::Previous work by others has revealed homology between the rel oncogene and the transcription factor NF-kappa B. Further, in vitro-translated v-rel protein and c-rel protein are able to bind to an oligonucleotide containing the kappa B binding site. Unlike the in vitro-translated product, cellular Rel protein exists in...
journal_title:Oncogene
pub_type: 杂志文章
doi:
更新日期:1992-03-01 00:00:00
abstract::Over 70% of human breast cancers are estrogen receptor-positive (ER+), most of which express MYB. In these and other cell types, the MYB transcription factor regulates the expression of many genes involved in cell proliferation, differentiation, tumorigenesis, and apoptosis. So far, no clear link has been established ...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/s41388-019-0789-3
更新日期:2019-06-01 00:00:00
abstract::We have examined the presence of p16MTS1/CDK4I gene deletions, mutations and methylation status, and 9p21-23 deletions in a series of 46 squamous cell carcinomas of the larynx and paired normal mucosa previously characterized for cyclin D1 gene amplification and overexpression. pRb expression was also examined by immu...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1201309
更新日期:1997-09-18 00:00:00
abstract::The putative tumor suppressor CDKN1C is an imprinted gene at 11p15.5, a well-known imprinted region often deleted in tumors. The absence of somatic mutations and the frequent diminished expression in tumors would suggest that CDKN1C expression is regulated epigenetically. It has been, however, controversial whether th...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1207576
更新日期:2004-05-27 00:00:00
abstract::Ewing sarcoma is a pediatric bone tumor characterized in 85% of cases by the fusion between EWS and FLI1 genes that results in the expression of the EWS-FLI1 aberrant transcription factor. Histologically, the Ewing tumor expresses high levels of the CD99 membrane glycoprotein. It has been recently described that CD99 ...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/onc.2012.403
更新日期:2013-08-15 00:00:00
abstract::Intrinsic and acquired resistance to anti-EGFR antibody therapy, frequently mediated by a mutant or amplified KRAS oncogene, is a significant challenge in the treatment of colorectal cancer (CRC). However, the mechanism of KRAS-mediated therapeutic resistance is not well understood. In this study, we demonstrate that ...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/s41388-018-0289-x
更新日期:2018-08-01 00:00:00
abstract::Many lines of evidence indicate that connexin genes expressing gap junction (GJ) proteins inhibit tumor cell proliferation. However, the precise molecular mechanisms remain unclear. In this study, we show that overexpression of connexin43 (Cx43) suppressed proliferation of human osteosarcoma U2OS cells through inhibit...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1204563
更新日期:2001-07-12 00:00:00
abstract::Drosophila tumor suppressor WARTS (Wts) is an evolutionally conserved serine / threonine kinase and participates in a signaling complex that regulates both proliferation and apoptosis to ensure the proper size and shape of the fly. Human counterparts of this complex have been found to be frequently downregulated or mu...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1208682
更新日期:2005-08-11 00:00:00
abstract::There is a large body of evidence suggesting the connexin gap junction proteins appear to act as tumor suppressors, and their tumor inhibitory effect is usually attributed to their main function of cell coupling through gap junctions. However, some cancer cells (e.g. the rat bladder carcinoma BC31 cell line) are cell-...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1203340
更新日期:2000-01-27 00:00:00
abstract::Recent studies suggest that the action of platelet-activating factor (PAF), a potent phospholipid modulator of allergic and inflammatory reactions, is diverse and functions as a modulator of a variety of physiological and pathological events in many cell types and tissues. Its role (if any) in modulating the prolifera...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1206348
更新日期:2003-04-10 00:00:00
abstract::The discovery of constitutive nuclear factor-κB (NF-κB) activation in Hodgkin's lymphoma tumor cells almost two decades ago was one of the first reports that directly connected deregulated NF-κB signaling to human cancer. Subsequent studies demonstrated that enhanced NF-κB signaling is a common hallmark of many lympho...
journal_title:Oncogene
pub_type: 杂志文章,评审
doi:10.1038/onc.2013.565
更新日期:2014-12-11 00:00:00
abstract::In a large proportion of familial and sporadic cases of Hirschsprung disease (HSCR) mutations in the RET (rearranged during transfection) protooncogene have been described. We have investigated the structure of the RET gene promoter and have analysed a region of approximately 1000 nucleotides in its promoter and 5'-up...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1202165
更新日期:1998-11-19 00:00:00
abstract::Only humans and higher primates have high uric acid blood levels. Although high uric acid causes gout, it has been linked with human longevity because of its hypothetical antioxidant function. Recent studies reveal that p53 has significant roles in cellular metabolism. One example of this is an antioxidant function th...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/onc.2014.119
更新日期:2015-04-02 00:00:00
abstract::The naked mole rat (nmr) is cancer resistant due to the abundant production of extremely high-molecular-weight hyaluronan (EHMW-HA). However, whether EHMW-HA has similar anti-cancer effects in mice and humans remains to be determined. The present study used breast cancer cells to clarify the effect of EHMW-HA on breas...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/s41388-019-0719-4
更新日期:2019-05-01 00:00:00
abstract::p27Kip1 is a regulator of the mammalian cell cycle and a putative tumor suppressor. Distinct altered patterns of p27Kip1 protein expression are found in a variety of human carcinomas, and p27Kip1 expression levels usually correlate directly with disease-free survival. The mechanism(s) by which p27Kip1 expression is re...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1203891
更新日期:2000-10-19 00:00:00
abstract::Fli-1 is a proto-oncogene which is rearranged in tumors induced by three different retroviruses, Cas-Br-E, F-MuLV, and 10A1. This gene is a member of the Ets gene family, a class of transcription factors that recognize and bind to a DNA motif known as the Ets binding site (EBS). Our laboratory has previously cloned an...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1202913
更新日期:1999-09-30 00:00:00
abstract::Diminished expression of the metastasis suppressor protein RKIP was previously reported in a number of cancers. The underlying mechanism remains unknown. Here, we show that the expression of RKIP negatively correlates with that of Snail zinc-transcriptional repressor, a key modulator of normal and neoplastic epithelia...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1210860
更新日期:2008-04-03 00:00:00
abstract::Smad4 is a critical component in transforming growth factor beta (TGF-beta) signaling and frequently mutated in pancreatic and colorectal cancers. Smad4 has two important functional domains, MH1 and MH2, that are involved in different biological processes. The MH1 domain comprises a DNA binding domain and the MH2 doma...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1207219
更新日期:2004-02-05 00:00:00
abstract::Nuclear-targeted high molecular weight 24 kDa fibroblast growth factor 2 (FGF-2) may induce specific cell functions through intracrine mechanisms. The role of nuclear FGF-2 on the metastatic potential of carcinoma cells was examined by conditional FGF-2 expression, which demonstrated that spontaneous metastasis in nud...
journal_title:Oncogene
pub_type: 杂志文章
doi:10.1038/sj.onc.1207638
更新日期:2004-06-10 00:00:00