Abstract:
:Long-term glucocorticoid (GC) usage may cause non-traumatic femoral head osteonecrosis. Dexamethasone (Dex) is shown to exert potent cytotoxic effect to osteoblasts. Here, we investigated the potential activity of α-melanocyte stimulating hormone (α-MSH) against the process. Our data revealed that pretreatment of α-MSH significantly inhibited Dex-induced apoptosis and necrosis in both osteoblastic-like MC3T3-E1 cells and primary murine osteoblasts. Melanocortin receptor 4 (MC4R) acts as the receptor of α-MSH in mediating its actions in osteoblasts. The MC4R antagonist SHU9119, or shRNA-mediated knockdown of MC4R, almost abolished α-MSH-induced activation of downstream signalings (Akt and Erk1/2) and its pro-survival effect in osteoblasts. Further studies showed that α-MSH activated MC4R downstream sphingosine kinase 1 (SphK1) and increased cellular sphingosine-1-phosphate (S1P) content in MC3T3-E1 cells and primary murine osteoblasts, which were blocked by SHU9119 or MC4R shRNAs. SphK1 inhibition by the its inhibitor N,N-dimethylsphingosine (DMS), or SphK1 knockdown by targeted-shRNAs, largely attenuated α-MSH-mediated osteoblast protection against Dex. Together, these results suggest that α-MSH alleviates Dex-induced damages to cultured osteoblasts through activating MC4R-SphK1 signaling.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Guo S,Xie Y,Fan JB,Ji F,Wang S,Fei Hdoi
10.1016/j.bbrc.2015.11.104subject
Has Abstractpub_date
2016-01-08 00:00:00pages
281-7issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(15)30973-6journal_volume
469pub_type
杂志文章abstract::The organisms have the capacity to sense and adapt to their surroundings for their life in a dynamic environment. In response to amino acid starvation, cells activate a rectifying physiological program, termed the integrated stress response (ISR), to restore cellular homeostasis. General controlled non-repressed (GCN2...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2020.09.120
更新日期:2020-12-17 00:00:00
abstract::Leucine-rich repeat kinase 2 (LRRK2) is the molecule responsible for autosomal-dominant Parkinson's disease (PD), PARK8, but the etiologic effects of its mutation remain unknown. In the present study, we investigated a novel mechanism for the neurodegeneration induced by I2020T mutant LRRK2. Using native gel electroph...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2012.11.113
更新日期:2013-01-11 00:00:00
abstract::Copper is a micronutrient that is required for proper metabolic functioning of most prokaryotic and eukaryotic organisms. To sustain an adequate supply of copper, a cell requires molecular mechanisms that control the metal content to avoid copper toxicity. This toxicity comes primarily from the reactivity of copper, w...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2011.02.109
更新日期:2011-03-25 00:00:00
abstract::MicroRNAs (miRNAs) have been shown to be involved in the pathophysiological processes of pain. At present, the roles and mechanisms of miRNAs in neonatal repetitive pain are largely unknown. In our research, the expression of miR-140-3p was increased in premature infants who received repetitive painful stimuli since a...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2019.05.133
更新日期:2019-08-06 00:00:00
abstract::A simple and high yield purification procedure for the isolation of F0F1-ATPase from spinach leaf mitochondria has been developed. This is the first report concerning purification and composition of the plant mitochondrial F0F1-ATPase. The enzyme is selectively extracted from inner membrane vesicles with the zwitterio...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(90)90543-v
更新日期:1990-08-16 00:00:00
abstract::The 55- (H-UK) and 36-kDa forms (L-UK) of human urinary urokinase lost most of esterase activity toward acetyl-glycyl-L-lysine methyl ester upon reductive cleavage of 3 SS bonds with dithiothreitol in the presence of the competitive inhibitor, N alpha-benzoyl-L-arginine amide (BAA), bound to polyacrylyl azide with C16...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(83)91526-7
更新日期:1983-04-29 00:00:00
abstract::L1 elements are mammalian retrotransposons contributing to genome evolution and causing rare mutations in human. We describe a de novo insertion of an L1 element into the dystrophin gene resulting in skipping of exon 44 and causing Duchenne muscular dystrophy in a boy. The L1 element was rearranged due to the twin-pri...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2006.06.071
更新日期:2006-08-18 00:00:00
abstract::The effect of platelet release products on cytosolic calcium [( Ca++]i) was examined by monitoring the fluorescence of chick embryonic heart cells loaded with the fluorescent calcium indicator indo-1 AM. Cell free filtrate of platelet release products was obtained from rabbit platelets activated with thrombin or colla...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(90)90509-l
更新日期:1990-08-16 00:00:00
abstract::Advanced glycation end products (AGEs) are harmful compounds generated by nonspecific glycation of proteins and lipids. The accumulation of AGEs is associated with various diseases, including breast cancer. AGEs have been shown to promote a breast cancer cell line by enhancing proliferation, invasion and migration. In...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2017.11.182
更新日期:2018-01-15 00:00:00
abstract::Mutations in the human TCOF1 gene have been identified in patients with Treacher Collins Syndrome (Mandibulofacial Dysostosis), an autosomal dominant condition affecting the craniofacial region. We report the isolation of the entire mouse Tcof1 coding sequence (3960 bp) by performing a computer-based search for mouse ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1997.7229
更新日期:1997-09-08 00:00:00
abstract::The properties of the Ca stores in the skinned fiber bundles of the guinea-pig taenia caeci were studied by a novel method to measure Ca released from the stores using a fluorescent Ca indicator, fura-2. It is found that the capacity of the Ca stores amounts some 170 mumoles/liter cell water. There are at least two Ca...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(87)90449-9
更新日期:1987-01-15 00:00:00
abstract::Groucho is a corepressor that forms a macromolecular complex for its corepressor activity, in which HDAC1 is an essential component for the modulation of chromatin structure and transcriptional repression of target genes. Here, we show that Groucho is covalently conjugated with small ubiquitin-related modifier-1 (SUMO...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2008.12.043
更新日期:2009-01-30 00:00:00
abstract::Expression of ALP in F9 teratocarcinoma cells is induced by all-trans retinoic acid (ATRA) (Gianni' et al., Biochem. J. 274: 673-678, 1991). The specific ligand for retinoic acid related receptors (RXRs), 9-cis retinoic acid (9-cis RA), and three synthetic analogs binding to the alpha, beta and gamma forms of the reti...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.2242
更新日期:1993-10-15 00:00:00
abstract::The nuclear receptors for heme, REV-ERBα and REV-ERBβ, play important roles in the regulation of metabolism and inflammation. Recently it was demonstrated that reduced REV-ERBα expression in hematopoetic cells in LDL receptor null mice led to increased atherosclerosis. We sought to determine if synthetic REV-ERB agoni...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2015.03.070
更新日期:2015-05-08 00:00:00
abstract::Focal adhesion kinase, FAK, is a unique protein tyrosine kinase found in cellular focal adhesions. It is widely expressed and highly phosphorylated during embryogenesis. To examine the function of FAK in cell differentiation, we made FAK-deficient embryonic stem (ES) cells by homologous recombination. However, FAK-def...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.1503
更新日期:1995-04-06 00:00:00
abstract:BACKGROUND:Platelet microparticles (PMPs) are closely associated with diabetic macrovascular complications. This study aimed to explore the underlying mechanisms of high glucose-induced PMPs generation. METHODS:Washed platelets, obtained from the plasma of healthy male Sprague-Dawley rats, were incubated with high glu...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2018.12.166
更新日期:2019-02-05 00:00:00
abstract::Ectodomain shedding of membrane receptors and ligands carried out by ADAMs (A disintegrin and metalloprotease) plays a major role in several signaling pathways, including Notch. The grounds of substrate recognition, however, are poorly understood. We demonstrate that a recombinant protein corresponding to the juxtamem...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2013.02.022
更新日期:2013-03-22 00:00:00
abstract::Kinetic studies on the cyclization of 2,3(S)-oxido and 2,3(S):22(S),23-dioxido[14C]squalene catalyzed by liver oxidosqualene-lanosterol cyclase revealed a specificity (in terms of V/Km) of the enzyme for the diepoxide. The specificity ratio was dependent on the enzyme preparation, i.e. purified or microsomal, and was ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(92)91140-l
更新日期:1992-10-30 00:00:00
abstract::The human dopamine D4 receptor gene (DRD4) is an important candidate gene for schizophrenia. We identified a novel -521C>T polymorphism in the 5'-promoter region of DRD4. A transient expression method revealed that the T allele of this polymorphism reduces the transcriptional efficiency by 40% compared with the C alle...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1999.0630
更新日期:1999-05-10 00:00:00
abstract::We infected a mixed culture of primary rat astrocytes and microglia with a replication-defective adenovirus carrying the rat glia maturation factor (GMF) cDNA. Affymetrix microarray analysis showed a big increase in the expression of several major histocompatibility complex (MHC) class II proteins along with interleuk...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/S0006-291X(02)00467-9
更新日期:2002-06-07 00:00:00
abstract::Hepatocyte growth factor, which is now known to be the same protein as scatter factor, induced oligonucleosomal fragmentation of nuclear DNA of Sarcoma 180 cells and increased the activity of caspase-3, a key component in control of the apoptotic cell death pathway to about 2.6 times that in control cells on 48 hr inc...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1998.8397
更新日期:1998-04-07 00:00:00
abstract::Up to now, all reported Ca(2+)-regulated photoproteins, except for mnemiopsin, have been cloned and expressed in Escherichia coli. In this study, the cDNA for an isotype of mnemiopsin, from the ctenophore Mnemiopsis leidyi, has been cloned, sequenced, and functionally expressed. The full length cDNA encoding mnemiopsi...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2011.08.022
更新日期:2011-09-23 00:00:00
abstract::Cox-2 plays an important role in colon carcinogenesis and inflammation. Studying the HT-29 colon cancer cell line as a model, we found that Cox-2 expression and activity is increased approximately 25-fold by TNF-alpha. As previously reported for other Cox-2 inducers, this activation appears to result from a p38-mediat...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2004.03.066
更新日期:2004-04-30 00:00:00
abstract::Methanococcus voltae produces two flagellins of molecular weight 31,000 and 33,000. Amino acid analysis as well as peptide mapping with cyanogen bromide, chymotrypsin and Staphylococcus aureus V-8 protease indicates that the two flagellins are distinct. N-terminal sequencing of the 31,000 Mc. voltae flagellin as well ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(90)91744-d
更新日期:1990-02-28 00:00:00
abstract::SND p102 is a rat liver endoplasmic reticulum cholesterol ester hydrolase recently described as a member of a conserved family of transcriptional coactivators that promotes phospholipid secretion into lipoproteins when overexpressed in hepatocytes. In this work, we report first evidence for a mechanism of transcriptio...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.02.110
更新日期:2007-04-27 00:00:00
abstract::Alterations of the mitochondrial DNA, encoding important parts of the cellular energy-generating system (oxidative phosphorylation, OXPHOS), are often associated with the occurrence of degenerative neuromuscular diseases. Especially point mutations in the mitochondrial tRNA genes, which cannot be complemented by the n...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1994.1540
更新日期:1994-04-29 00:00:00
abstract::Splenic B cells are induced to proliferate upon culture with antibody having specificity for surface membrane immunoglobulins. Cells treated with pronase, washed and then cultured with antibody, exhibited a greater than 5-fold enhancement of DNA synthesis whereas pronase treatment, per se, was not mitogenic. The prona...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(84)91609-7
更新日期:1984-02-29 00:00:00
abstract::Spectroscopic analysis of the interaction of the epimeric 20-hydroperoxy derivatives of cholesterol with bovine adrenocortical cytochrome P-450scc preparations suggested the formation of a transient species. The intermediate was detected at 4 degrees C and characterized by a minimum at 412 nm in the difference spectru...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(83)91513-9
更新日期:1983-04-29 00:00:00
abstract::The Br140 protein was initially identified due to its co-purification with an integrin. We have cloned and sequenced the cDNA corresponding to the Br140 protein. Analysis of the amino acid sequence indicates that Br140 has features characteristic of gene regulatory proteins, including zinc fingers. Furthermore, Br140 ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1994.1162
更新日期:1994-02-15 00:00:00
abstract::The filamentous fungus Aspergillus fumigatus is the major cause of life threatening invasive aspergillosis, and its small hydrophobic asexual spores (conidia) are the major infection agent. To better understand biology of A. fumigatus, we have characterized the rax1 gene encoding a putative regulator of G protein sign...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2017.04.079
更新日期:2017-05-27 00:00:00