Abstract:
:Small GTPase Rap1 has been implicated in the proper differentiation of testicular germ cells. In the present study, we investigated the functional significance of RA-GEF-2/Rapgef6, a guanine nucleotide exchange factor for Rap1, in testicular differentiation using mice lacking RA-GEF-2. RA-GEF-2 was expressed predominantly on the luminal side of the seminiferous tubules in wild-type mice. No significant differences were observed in the body weights or hormonal parameters of RA-GEF-2(-)(/)(-) and wild-type mice. However, the testes of RA-GEF-2(-)(/)(-) male mice were significantly smaller than those of wild-type mice and were markedly atrophied as well as hypospermatogenic. The concentration and motility of epididymal sperm were also markedly reduced and frequently had an abnormal shape. The pregnancy rate and number of fetuses were markedly lower in wild-type females after they mated with RA-GEF-2(-)(/)(-) males than with wild-type males, which demonstrated the male infertility phenotype of RA-GEF-2(-)(/)(-) mice. Furthermore, a significant reduction and alteration were observed in the expression level and cell junctional localization of N-cadherin, respectively, in RA-GEF-2(-)(/)(-) testes, which may, at least in part, account for the defects in testicular differentiation and spermatogenesis in these mice.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Okada K,Miyake H,Yamaguchi K,Chiba K,Maeta K,Bilasy SE,Edamatsu H,Kataoka T,Fujisawa Mdoi
10.1016/j.bbrc.2014.01.149subject
Has Abstractpub_date
2014-02-28 00:00:00pages
89-94issue
1eissn
0006-291Xissn
1090-2104pii
S0006-291X(14)00184-3journal_volume
445pub_type
杂志文章abstract::Expression of retinoic acid receptor-beta (RAR-beta) is frequently lost in tobacco-related cancers. Benzo[a]pyrene diol epoxide (BPDE) is an active metabolite of tobacco procarcinogen benzo[a]pyrene and plays an important role in tobacco carcinogenesis. We therefore exposed SV-40 immortalized esophageal epithelial cel...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2001.4433
更新日期:2001-03-09 00:00:00
abstract::MicroRNAs (miRNAs) are small non-coding RNAs that are emerging as important post-transcriptional gene regulators. miR-206 is unique in that it is expressed only in skeletal muscle, including the myoblastic C2C12 cell line. In C2C12 cells, miR-206 expression was reduced dramatically after bone morphogenetic protein (BM...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2009.03.142
更新日期:2009-05-22 00:00:00
abstract::Leber's hereditary optic neuropathy (LHON) has been associated with "primary" and "secondary" mtDNA missense point mutations, and a synergistic role has been proposed for secondary mutations. No previous study has investigated the effects of LHON primary or primary plus secondary mutations on the respiratory competenc...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.1740
更新日期:1995-05-25 00:00:00
abstract::Receptor activator of nuclear factor (NF)-κB ligand (RANKL)-activated signaling is essential for osteoclast differentiation, activation, and survival. Salicortin is a phenolic glycoside that has been isolated from many plants such as Populus and Salix species, and has been shown to have anti-amnesic and anti-adipogeni...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2015.12.115
更新日期:2016-01-29 00:00:00
abstract::Activated vascular endothelium inflammation under persistent hyperlipidemia is the initial step of atherogenesis. ATP-binding cassette G1 (ABCG1) is a crucial factor maintaining sterol and lipid homeostasis by transporting cholesterol efflux to high-density lipoprotein. In this study, we investigated the protective ef...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2016.06.050
更新日期:2016-08-19 00:00:00
abstract::The x-ray absorption near edge structure (XANES) spectra of hemoglobin and myoglobin have been measured at the wiggler beam line of the Frascati Synchrotron Radiation Facility. The energy shifts of the iron absorption jump edge and the chemical shifts of the bound excited state at threshold of 1s core excitations, goi...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(85)91775-9
更新日期:1985-08-30 00:00:00
abstract::The exocytosis of catecholamines by chromaffin cells following stimulation (e.g. by acetylcholine) is accompanied by a rise in the level of intracellular free Ca2+. Actually, secretion can be induced merely by making the cells leaky to Ca2+ from the external medium. We have recently demonstrated that secretion can be ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(84)80299-5
更新日期:1984-03-15 00:00:00
abstract::Recombinant human leukocyte interferon (IFN-alpha A) inhibits growth of the human promyelocytic leukemic cell line HL-60 without inducing these cells to differentiate terminally. When IFN-alpha A is combined with agents capable of inducing differentiation in HL-60 cells, such as 12-O-tetradecanoyl-phorbol-13-acetate (...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(85)90428-0
更新日期:1985-07-16 00:00:00
abstract::E-cadherin plays a mechanical role in mediating cell-cell interactions and maintaining epithelial tissue integrity, and the loss of E-cadherin function has been implicated in cancer progression and metastasis. Syndecan-2, a cell-surface heparan sulfate proteoglycan, is upregulated during the development of colon cance...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2016.06.019
更新日期:2016-08-12 00:00:00
abstract::Lanosterol was converted to a 14-demethylated metabolite, 4,4-dimethylzymosterol by Saccharomyces cerevisiae microsomes. This metabolism was mediated by a cytochrome P-450 (P-450/14DM). However, a reconstituted system consisting of P-450/14DM and its reductase converted lanosterol to the 14-desaturated derivative of 4...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(86)80470-3
更新日期:1986-01-29 00:00:00
abstract::Circulating microparticles (MPs) are involved in many physiological processes and numbers are increased in a variety of cardiovascular disorders. The present aims were to characterize levels of MPs in a rodent model of chronic cerebral hypoperfusion (CCH) and to determine their signaling properties. MPs were isolated ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2014.06.096
更新日期:2014-07-18 00:00:00
abstract::The present study demonstrates that both oligomeric metalloendopeptidase meprin A purified from kidney cortex and recombinant meprin alpha are capable of generating biologically active IL-1beta from its precursor pro-IL-1beta. Amino-acid sequencing analysis reveals that meprin A and meprin alpha cleave pro-IL-1beta at...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2008.12.161
更新日期:2009-02-20 00:00:00
abstract::The human poly(rC)-binding protein (PCBP) 2 is known to interact with enteroviral RNA. Here, the interaction of PCBP2 with RNA target sequences at the 5' end of the coxsackievirus B3 genome was investigated. Using the electrophoretic mobility shift assay and the yeast three-hybrid system, a short oligo(rC) tract conne...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.12.038
更新日期:2008-02-22 00:00:00
abstract::The bacterioferritin-associated ferredoxin (Bfd) of Escherichia coli is a 64-residue polypeptide encoded by the bfd gene located upstream of the gene (bfr) encoding the iron-storage haemoprotein, bacterioferritin. The Bfd sequence resembles those of the approximately 60-residue domains found in NifU proteins (required...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1996.1856
更新日期:1996-12-13 00:00:00
abstract::The 3-deoxy-octulosonic acid-containing trisaccharide was isolated from the carbohydrate material obtained after the acid hydrolysis of lipopolysaccharides of Hafnia alvei strains 2 and 1211 using gel filtration. For purification the trisaccharide fraction was rechromatographed on a Bio-Gel P2 column. On the basis of ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.1929
更新日期:1993-08-16 00:00:00
abstract::Antigen-transporting cells take up pathogens, and then migrate from sites of inflammation to secondary lymphoid tissues to induce an immune response. Among antigen-transporting cells, dendritic cells (DCs) are believed to be the most potent and professional antigen-presenting cells that can stimulate naïve T cells. Ho...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2008.10.011
更新日期:2008-12-12 00:00:00
abstract::The effects of fibroblast growth factor (FGF) on testicular aromatase activity has been studied using primary cultures of porcine Leydig cells. After culture for 3 days in the absence or presence of FGF, the ability of the cells to produce estrogen was examined in a 4h-test period in which either (a) hCG (10(-9) M) or...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(88)90574-8
更新日期:1988-02-29 00:00:00
abstract::Maximal stimulation of inositol 1,4,5 trisphosphate (IP3) production by epinephrine and carbachol in rat parotid cell aggregates is additive when the two agents are employed simultaneously. The additive response proceeds through both the alpha 1-adrenergic and muscarinic-cholinergic signal transduction pathways. It is...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(91)90426-8
更新日期:1991-05-15 00:00:00
abstract::Plicatamide is a modified octapeptide from the ascidian Styela plicata having the structure Phe-Phe-His-Leu-His-Phe-His-decarboxyDeltaDOPA (where decarboxyDeltaDOPA = decarboxy-(E)-alpha,beta-dehydro-3, 4-dihydroxyphenylalanine). Edman sequencing, tandem mass spectrometry, and proton NMR have been used to characterize...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2000.2449
更新日期:2000-04-13 00:00:00
abstract::Matrix metalloproteinase-9 (MMP-9) plays a major role in the pathogenesis of atherosclerosis and restenosis by regulating both migration and proliferation of vascular smooth muscle cells (VSMC) after an arterial injury. In this study, we examined the inhibitory effect of three major flavonoids in Scutellariae Radix, b...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2006.10.006
更新日期:2006-12-08 00:00:00
abstract::We cloned two novel types of TEA domain-containing transcription factor (ETFR-1 and -2) cDNAs. Amino acid sequences deduced for ETFR-1 and -2 as well as those of other known proteins of the same family, TEF-1 and ETF, exhibited significant identity (63-75% overall) to each other not only in the TEA DNA binding domain ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1996.1667
更新日期:1996-11-12 00:00:00
abstract::IL-13 mediates its effects through a complex receptor system including IL-4Ralpha and a functional IL-13Ralpha1. IL-13 has been reported to have no effects on mouse B cells due to a lack of receptor expression. However, on human B cells a functional IL-13Ralpha1 has been described. Here, we identified the rat IL-13Ral...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2001.5682
更新日期:2001-10-05 00:00:00
abstract::Recently we have identified mRNA encoding a hitherto unknown mammalian X,K-ATPase beta-subunit expressed predominantly in muscle tissue (Pestov, N. B. et al. (1999) FEBS Lett. 456, 243-248). Here we demonstrate the existence of the predicted protein, designated as beta(m) (beta(muscle)), in human adult skeletal muscle...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2000.3692
更新日期:2000-10-22 00:00:00
abstract::The production rate of dengue viruses (DENVs), especially low-passage virus isolates, is low, and, therefore, the isolates are generally used only after several passages. However, in vitro passages could induce mutation(s). In this study, we established a system for the characterization of low-passage viral isolates u...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2010.02.181
更新日期:2010-04-02 00:00:00
abstract::The apical ectodermal ridge (AER) controls limb outgrowth and patterning, such that its removal causes changes in mesodermal gene expression, cell death and limb truncation. Fibroblast growth factor (FGF) family members are expressed in the AER and can rescue limb bud outgrowth after AER removal. Cells localized under...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2006.10.186
更新日期:2007-01-05 00:00:00
abstract::We have previously shown that cationic cholesterol derivatives bearing guanidinium groups were efficient vectors for gene transfer. To further evaluate the potentiality of this novel class of cationic lipids, we undertook to study the transfection efficiency of guanidinium-based lipids with other hydrophobic moieties....
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2001.4401
更新日期:2001-02-23 00:00:00
abstract::The role of eIF4G during the initiation of protein synthesis was studied using mouse mammary carcinoma FM3A cells and FM4G cells that overproduce an N-terminally truncated form of eIF4G, which lacks the binding site of poly(A)-binding protein. An increase in eIF4G was correlated with an increase in protein synthesis a...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2000.3637
更新日期:2000-10-14 00:00:00
abstract::The effect of a cryptic splice acceptor (cSA) site located at the end of the extended packaging signal in murine leukemia virus (MLV)-based vectors was investigated. Although this cSA is also present in wild type MLV, it was found to result in a smaller transcript in which the packaging signal (Psi) had been removed b...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/S0006-291X(02)00207-3
更新日期:2002-04-26 00:00:00
abstract::Breast cancer amplified sequence 2 (BCAS2) was initially identified as a gene that was overexpressed and amplified in some breast cancer cell lines. It was later found to be a component of the spliceosome. Here, we identified BCAS2 as an estrogen receptor (ER) alpha interacting protein by yeast two-hybrid screening. I...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2004.12.187
更新日期:2005-03-11 00:00:00
abstract::The α1,3/4-fucosyltransferases (FUT) subfamily are key enzymes in cell surface antigen synthesis during various biological processes. A novel role of FUTs in tumorigenesis has been discovered recently, however, the underlying mechanism remains largely unknown. Here, we characterized FUT6, a member of α1,3/4-FUT subfam...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2011.11.106
更新日期:2012-01-06 00:00:00