Abstract:
:E3 ubiquitin ligases, which target specific molecules for proteolytic destruction, have emerged as key regulators of immune functions. Several E3 ubiquitin ligases, including c-Cbl, Cbl-b, GRAIL, Itch, and Nedd4, have been shown to negatively regulate T-cell activation. Here, we report that the HECT-type E3 ligase AIP2 positively regulates T-cell activation. Ectopic expression of AIP2 in mouse primary T cells enhances their proliferation and interleukin-2 production by suppressing the apoptosis of T cells. AIP2 interacts with and promotes ubiquitin-mediated degradation of EGR2, a zinc finger transcription factor that has been found to regulate Fas ligand (FasL) expression during activation-induced T-cell death. Suppression of AIP2 expression by small RNA interference upregulates EGR2, inhibits EGR2 ubiquitination and FasL expression, and enhances the apoptosis of T cells. Therefore, AIP2 regulates activation-induced T-cell death by suppressing EGR2-mediated FasL expression via the ubiquitin pathway.
journal_name
Mol Cell Bioljournal_title
Molecular and cellular biologyauthors
Chen A,Gao B,Zhang J,McEwen T,Ye SQ,Zhang D,Fang Ddoi
10.1128/MCB.00407-09subject
Has Abstractpub_date
2009-10-01 00:00:00pages
5348-56issue
19eissn
0270-7306issn
1098-5549pii
MCB.00407-09journal_volume
29pub_type
杂志文章abstract::Here, we demonstrate that SENP2, a desumoylating enzyme, plays a critical role in the control of adipogenesis. SENP2 expression was markedly increased upon the induction of adipocyte differentiation, and this increase was dependent on protein kinase A activation. Remarkably, knockdown of SENP2 led to a dramatic attenu...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00852-09
更新日期:2010-05-01 00:00:00
abstract::We provide evidence that human SLFN5, an interferon (IFN)-inducible member of the Schlafen (SLFN) family of proteins, exhibits key roles in controlling motility and invasiveness of renal cell carcinoma (RCC) cells. Our studies define the mechanism by which this occurs, demonstrating that SLFN5 negatively controls expr...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00019-15
更新日期:2015-08-01 00:00:00
abstract::IkappaB alpha retains the transcription factor NF-kappaB in the cytoplasm, thus inhibiting its function. Various stimuli inactivate IkappaB alpha by triggering phosphorylation of the N-terminal residues Ser32 and Ser36. Phosphorylation of both serines is demonstrated directly by phosphopeptide mapping utilizing calpai...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.17.6.3021
更新日期:1997-06-01 00:00:00
abstract::T antigen (Tag) from simian virus 40 binds specifically to two distinct sites in the viral origin of replication and to single-stranded DNA. Analysis of the protein domain responsible for these activities revealed the following. (i) The C-terminal boundary of the origin-specific and single-strand-specific DNA-binding ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.9.12.5525
更新日期:1989-12-01 00:00:00
abstract::The ADP/ATP translocator, a transmembrane protein of the mitochondrial inner membrane, is coded in Saccharomyces cerevisiae by the nuclear gene PET9. DNA sequence analysis of the PET9 gene showed that it encoded a protein of 309 amino acids which exhibited a high degree of homology with mitochondrial translocator prot...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.6.2.626
更新日期:1986-02-01 00:00:00
abstract::The neutral/neutral two-dimensional (2-D) gel replicon mapping technique has been used to great advantage to localize and characterize origins of replication. Interestingly, many yeast origins display a composite pattern consisting of both a bubble arc and a single-fork arc. Moreover, in every instance in which neutra...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.16.9.4915
更新日期:1996-09-01 00:00:00
abstract::Using an expression cDNA cloning approach, we examined human tumor cell lines for novel oncogenes that might evade detection by conventional techniques. We isolated a transforming sequence that was highly efficient in transforming NIH 3T3 mouse fibroblasts. DNA sequence analysis identified the gene as the human homolo...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.13.2.762
更新日期:1993-02-01 00:00:00
abstract::We analyzed the binding site(s) for Grb2 on the epidermal growth factor (EGF) receptor (EGFR), using cell lines overexpressing EGFRs containing various point and deletion mutations in the carboxy-terminal tail. Results of co-immunoprecipitation experiments suggest that phosphotyrosines Y-1068 and Y-1173 mediate the bi...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.14.8.5192
更新日期:1994-08-01 00:00:00
abstract::We have identified a new immunoglobulin heavy-chain enhancer element, designated pi, between the microE2 and microE3 elements. The pi enhancer element is transcriptionally active primarily during early stages of B-cell development but becomes virtually inactive during B-cell maturation at about the stage of immunoglob...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.13.10.5957
更新日期:1993-10-01 00:00:00
abstract::The minichromosome maintenance protein 10 (Mcm10) is an evolutionarily conserved factor that is essential for replication initiation and elongation. Mcm10 is part of the eukaryotic replication fork and interacts with a variety of proteins, including the Mcm2-7 helicase and DNA polymerase alpha/primase complexes. A mot...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.02062-05
更新日期:2006-07-01 00:00:00
abstract::Osteoclast differentiation factor (ODF)/receptor activator of NF-kappaB ligand is essential for inducing the differentiation of mature osteoclasts. We find that nuclear factor Y (NF-Y) binds to the CCAAT box on the ODF promoter and regulates its basal transcriptional activity. The CCAAT box on the ODF gene is required...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.25.1.512-522.2005
更新日期:2005-01-01 00:00:00
abstract::NMYC is a gene whose amplification and overexpression have been implicated in the generation of certain human malignancies. Little is known of how the expression of NMYC is normally controlled. We have therefore characterized transcription from the gene and the structure and stability of the resulting mRNAs. Transcrip...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.7.12.4266
更新日期:1987-12-01 00:00:00
abstract::We introduced a human beta-globin gene into murine erythroleukemia (MEL) cells by infection with recombinant retroviruses containing the complete genomic globin sequence. The beta-globin gene was correctly regulated during differentiation, steady-state mRNA levels being induced 5- to 30-fold after treatment of the cel...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.7.2.887
更新日期:1987-02-01 00:00:00
abstract::The calcineurin-nuclear factor of activated T cells (NFAT) signaling pathway has been shown to be of critical importance in regulating the growth response of cardiac myocytes. We have previously demonstrated that calcineurin A(beta) (CnA(beta)) mRNA and protein are increased in response to growth stimulation, although...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.25.15.6649-6659.2005
更新日期:2005-08-01 00:00:00
abstract::The ligand-binding domains of thyroid hormone (L-triiodothyronine [T3]) receptors (T3Rs), all-trans retinoic acid (RA) receptors (RARs), and 9-cis RA receptors (RARs and RXRs) contain a series of heptad motifs thought to be important for dimeric interactions. Using a chimera containing amino acids 120 to 392 of chicke...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.14.9.5756
更新日期:1994-09-01 00:00:00
abstract::A unique genetic selection was devised at the HIS4 locus to address the mechanism of translation initiation in Saccharomyces cerevisiae and to probe sequence requirements at the normal translational initiator region that might participate in ribosomal recognition of the AUG start codon. The first AUG codon at the 5' e...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.8.7.2955
更新日期:1988-07-01 00:00:00
abstract::We have studied the mechanism by which 5'-flanking sequences modulate the in vitro transcription of eucaryotic tRNA genes. Using deletion and linker substitution mutagenesis, we have found that the 5'-flanking sequences responsible for the different in vitro transcription levels of three Drosophila tRNA5Asn genes are ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.8.10.4441
更新日期:1988-10-01 00:00:00
abstract::The endoplasmic reticulum (ER) is the major cellular compartment where folding and maturation of secretory and membrane proteins take place. When protein folding needs exceed the capacity of the ER, the unfolded protein response (UPR) pathway modulates gene expression and downregulates protein translation to restore h...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00260-09
更新日期:2009-08-01 00:00:00
abstract::The production of tumor necrosis factor alpha (TNF-alpha), a key proinflammatory cytokine essential for the function of the immune system, is regulated at both the transcriptional and posttranscriptional levels. In this report, we focus on the interaction of TNF-alpha mRNA with macrophage proteins, likely mediators of...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.16.10.5579
更新日期:1996-10-01 00:00:00
abstract::We have determined the complete nucleotide sequences of two chicken beta-tubulin genes, beta 1 and beta 2. These genes display an unusual pattern of segmental homology which indicates that they originally arose by gene duplication and have subsequently coevolved by a process that included localized gene conversion or ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.5.9.2454
更新日期:1985-09-01 00:00:00
abstract::Histone methylation at H3K4 and H3K36 is commonly associated with genes actively transcribed by RNA polymerase II (RNAPII) and is catalyzed by Saccharomyces cerevisiae Set1 and Set2, respectively. Here we report that both methyltransferases can be UV cross-linked to RNA in vivo High-throughput sequencing of the bound ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00165-17
更新日期:2017-06-29 00:00:00
abstract::Cancer cells often heavily depend on the ubiquitin-proteasome system (UPS) for their growth and survival. Irrespective of their strong dependence on the proteasome activity, cancer cells, except for multiple myeloma, are mostly resistant to proteasome inhibitors. A major cause of this resistance is the proteasome boun...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00252-18
更新日期:2018-08-15 00:00:00
abstract::RNA interference (RNAi) in animals, cosuppression in plants, and quelling in fungi are homology-dependent gene silencing mechanisms in which the introduction of either double-stranded RNA (dsRNA) or transgenes induces sequence-specific mRNA degradation. These phenomena share a common genetic and mechanistic basis. The...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.24.6.2536-2545.2004
更新日期:2004-03-01 00:00:00
abstract::DNA isolated from Saccharomyces cerevisiae strains carrying temperature-sensitive mutations in the CDC2 gene after incubation at the restrictive temperature contains multiple stably denatured regions 200 to 700 base pairs long. These regions are probably stabilized by a DNA-binding protein. They are found in both repl...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.3.9.1665
更新日期:1983-09-01 00:00:00
abstract::Wnt signaling is thought to be mediated via interactions between beta-catenin and members of the LEF-1/TCF family of transcription factors. Here we study the mechanism of transcriptional regulation by LEF-1 in response to a Wnt-1 signal under conditions of endogenous beta-catenin in NIH 3T3 cells, and we examine wheth...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.18.8.4807
更新日期:1998-08-01 00:00:00
abstract::Plk is a mammalian serine/threonine protein kinase whose activity peaks at the onset of M phase. It is closely related to other mammalian kinases, Snk, Fnk, and Prk, as well as to Xenopus laevis Plx1, Drosophila melanogaster polo, Schizosaccharomyces pombe Plo1, and Saccharomyces cerevisiae Cdc5. The M phase of the ce...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.17.6.3408
更新日期:1997-06-01 00:00:00
abstract::Drosophila virilis genomic DNA corresponding to the D. melanogaster embryonic lethal abnormal visual system (elav) locus was cloned. DNA sequence analysis of a 3.8-kb genomic piece allowed identification of (i) an open reading frame (ORF) with striking homology to the previously identified D. melanogaster ORF and (ii)...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.11.6.2994
更新日期:1991-06-01 00:00:00
abstract::Cyclic AMP-responsive element-binding protein 3-like 3, hepatocyte specific (CREBH), is a hepatic transcription factor that functions as a key regulator of energy homeostasis. Here, we defined a regulatory CREBH posttranslational modification process, namely, lysine-specific acetylation, and its functional involvement...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00665-15
更新日期:2015-12-01 00:00:00
abstract::Leukemia results from the expansion of self-renewing hematopoietic cells that are thought to contain mutations that contribute to disease initiation and progression. Studies of the gene expression profiles of human acute myeloid leukemia samples has allowed their classification based on the presence of translocations ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.24.24.10882-10893.2004
更新日期:2004-12-01 00:00:00
abstract::Cellular levels of diadenosine tetraphosphate (Ap4A) and adenosine tetraphospho-guanosine (Ap4G) were specifically measured during the cell cycle of Physarum polycephalum by a high-pressure liquid chromatographic method. Ap4A was also measured indirectly by a coupled phosphodiesterase-luciferase assay. No cell cycle-s...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.6.4.1179
更新日期:1986-04-01 00:00:00