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solution structure of human steroidogenic acute regulatory protein STARD1 studied by small-angle X-ray scattering
Data suggest that expression of STAR (steroidogenic acute regulatory protein) and AKR1B10 (zeige AKR1B10 ELISA Kits) (aldo-keto reductase family 1, member B10 (zeige ENPP3 ELISA Kits)) is down-regulated in high-grade versus low-grade endometrial tumors; expression of AKR1B10 (zeige AKR1B10 ELISA Kits) correlates with body mass index, with up-regulation of expression of AKR1B10 (zeige AKR1B10 ELISA Kits) in obese patients with endometrial tumors.
target of the microRNA let-7, which itself is regulated by the long noncoding RNA H19 (zeige NCKAP1 ELISA Kits)
Immunostaining of CLOCK and PER2 (zeige PER2 ELISA Kits) protein was detected in the granulosa cells of dominant antral follicles but was absent in the primordial, primary, or preantral follicles of human ovaries.Oscillating expression of the circadian gene PER2 (zeige PER2 ELISA Kits) can be induced by testosterone in human granulosa cells in vitro. Expression of STAR also displayed an oscillating pattern after testosterone stimulation
activins A, B and AB down-regulate StAR expression and decrease progesterone production in human granulosa cells, likely via an ALK4 (zeige ACVR1B ELISA Kits)-mediated SMAD2 (zeige SMAD2 ELISA Kits)/SMAD4 (zeige SMAD4 ELISA Kits)-dependent pathway.
Mutagenesis confirmed that Arg(312) and Arg(313) are crucial for this mode of regulation, and novel interactions with the START domain
StAR proteolysis is executed by at least 2 mitochondrial proteases, the matrix LON (zeige LONP1 ELISA Kits) protease and the inner membrane complexes of the metalloproteases AFG3L2 (zeige AFG3L2 ELISA Kits) and AFG3L2 (zeige AFG3L2 ELISA Kits):SPG7/paraplegin (zeige SPG7 ELISA Kits).
BMP15 (zeige BMP15 ELISA Kits) down-regulates StAR expression and decreases progesterone production in human granulosa cells, likely via ALK3 (zeige BMPR1A ELISA Kits)-mediated SMAD1 (zeige GARS ELISA Kits)/5/8 signaling.
The novel mutation p.Trp147Arg of the steroidogenic acute regulatory protein causes classic lipoid congenital adrenal hyperplasia with adrenal insufficiency and 46,XY disorder of sex development.
Expression of StAR and P45011beta (cytochrome P450 family 11 subfamily B polypeptide 1 (zeige CYP11B1 ELISA Kits)) is down-regulated in adrenocortical cells and neurons under oxidative stress by ALADIN (zeige AAAS ELISA Kits) (triple A syndrome protein, human) knockdown.
StAR may activate PPARgamma (zeige PPARG ELISA Kits) by increasing UFAs, which leads to a protective role in systemic inflammation and insulin (zeige INS ELISA Kits) resistance in obese mice.
ChIP results confirmed the binding of NRF1 (zeige NRF1 ELISA Kits) to StAR promoter region. In conclusion, decline of NRF1 (zeige NRF1 ELISA Kits) expression downregulated the level of StAR, which ultimately resulted in a reduction in testosterone synthesis.
The results demonstrated that ZnT7 (zeige SLC30A7 ELISA Kits) gene silencing downregulated the expression of StAR, P450scc (zeige CYP11A1 ELISA Kits) and 3beta-HSD (zeige HAL ELISA Kits) as well as progesterone concentrations in the human chorionic gonadotrophin-stimulated Leydig tumor cells.
cAMP, SIK (zeige SIK1 ELISA Kits) and CRTC mediate StAR expression through activation of individual StAR gene loci.
Bisphenol A induces oxidative stress by altering the expression of iNOS (zeige NOS2 ELISA Kits), which consequently leads to the down regulation of StAR expression in the testis of male mouse
Results show that HIF1alpha (zeige HIF1A ELISA Kits) appears to be a positive regulator of basal and stimulated STAR-expression, which under partial hypoxia is capable of increasing the steroidogenic capacity of granulosa cells.
The result showed significant correlation between changes in GLUT 8 (zeige SLC2A8 ELISA Kits) and glucose levels with changes in StAR level in the testis and circulating testosterone level in the mice from birth to senescence
Deletion of the START domain from Arabidopsis Glabra2, a representative HD-Zip transcription factor, results in a complete loss-of-function phenotype. The mammalian START domain from StAR can functionally replace the HD-Zip-derived START domain.
These discoveries highlight the importance of mitochondrial fusion and ERK (zeige EPHB2 ELISA Kits) phosphorylation in cholesterol transport by means of directing StAR to the outer mitochondrial membrane.
Results suggest that gonadotropins play a key role in the regulation of StAR, 17beta-HSD3, and P450aromA in zebrafish.
Data indicate that Ser738/742-to-glutamate (zeige GRIN2A ELISA Kits) protein kinase D (zeige PRKD1 ELISA Kits) mutant increased AngII-induced CREB (zeige CREB1 ELISA Kits) protein and activating transcription factor 2 (zeige ATF2 ELISA Kits) phosphorylation, and phospho-CREB (zeige CREB1 ELISA Kits) binding to the steroidogenic acute regulatory protein promoter.
Data suggest that Escherichia coli infections (here, administration of LPS (zeige IRF6 ELISA Kits)) provokes luteolysis in diestrus, non-lactating cows and down-regulation of expression of StAR in corpus luteum but has no effect on luteinization in the following cycle.
The binding of SF-1 (zeige NR5A1 ELISA Kits) to the CYP17 (zeige CYP17A1 ELISA Kits) and StAR promoter regions increased in theca cells incubated with low levels of luteinizing hormone.
Inhibition of the acetylation of histone H3 (zeige HIST3H3 ELISA Kits) associated with the StAR promoter region by BMP-4 (zeige BMP4 ELISA Kits) may be one of the inhibitory molecular mechanisms of progesterone synthesis in granulosa cells.
c-Fos/c-Jun (zeige JUN ELISA Kits) complex binds to the proximal StAR promoter in glomerulosa cells, thus activating StAR gene expression and acute aldosterone biosynthesis.
We found that adiponectin and insulin (zeige INS ELISA Kits) alone regulate the expression of StAR, CYP11A1 (zeige CYP11A1 ELISA Kits) and HSD3B1 (zeige HSD3B1 ELISA Kits) genes and secretion of P4 and A4 by the porcine endometrial and myometrial tissue explants during early pregnancy and the oestrous cycle.
GATA-4 (zeige GATA4 ELISA Kits) and C/EBPbeta (zeige CEBPB ELISA Kits) are both required for FSH (zeige BRD2 ELISA Kits) +/- IGF-I (zeige IGF1 ELISA Kits) stimulation of the porcine steroidogenic acute regulatory protein gene promoter in homologous granulosa cell cultures.
EGF (zeige EGF ELISA Kits) repression of FSH (zeige BRD2 ELISA Kits)-stimulated StAR transcription in porcine granulosa cells is accompanied by reductions in histone H3 (zeige HIST3H3 ELISA Kits) acetylation associated with the StAR gene promoter
The altered ratio of GATA4 (zeige GATA4 ELISA Kits) to GATA6 (zeige GATA6 ELISA Kits) after ovulation may allow GATA6 (zeige GATA6 ELISA Kits) to enhance STAR mRNA accumulation.
Under hypoxia reoxygenation or ischemia and reperfusion, StAR and CYP11A1 protein and gene expression was reduced without apparent relation to TSPO changes.
Data suggest enzymes in steroidogenic pathway are induced in interrenal cells during acute/chronic stress: mc2r (melanocortin 2 receptor (zeige MC2R ELISA Kits)); StAR (steroidogenic acute regulatory protein); 3beta-hydroxysteroid dehydrogenase; steroid 11beta hydroxylase.
The results showed that MMP-2 (zeige MMP2 ELISA Kits), MMP-9 (zeige MMP9 ELISA Kits), and StAR were significantly expressed in the granulosa and thecal cells of the ovarian atretic follicles during proestrus, and were strongly expressed in the corpus luteum during metestrus.
The protein encoded by this gene plays a key role in the acute regulation of steroid hormone synthesis by enhancing the conversion of cholesterol into pregnenolone. This protein permits the cleavage of cholesterol into pregnenolone by mediating the transport of cholesterol from the outer mitochondrial membrane to the inner mitochondrial membrane. Mutations in this gene are a cause of congenital lipoid adrenal hyperplasia (CLAH), also called lipoid CAH. A pseudogene of this gene is located on chromosome 13.
START domain containing 1
, START domain-containing protein 1
, StAR-related lipid transfer (START) domain containing 1
, cholesterol trafficker
, mitochondrial steroid acute regulatory protein
, steroid acute regulatory protein
, steroidogenic acute regulator
, steroidogenic acute regulatory protein, mitochondrial
, luteinizing hormone-induced protein
, lipid transporter
, steroidogenic acute regulatory protein
, mitochondrial steroidogenic acute regulatory protein