Abstract：
:Transcription of the glycoprotein hormone alpha-subunit gene in the pituitary is governed by different promoter elements in thyrotropes and gonadotropes. We recently identified an upstream enhancer that directs a high level of cell type specific expression in transgenic mice and stimulates proximal promoter activity in cultured alphaTSH and alphaT3 cells. To assess the contribution of promoter sequences that functionally interact with the enhancer, we mutated two proximal elements shown to be important in both thyrotrope and gonadotrope cells. Disruption of the pituitary glycoprotein hormone basal element (PGBE), which binds a LIM homeodomain protein, resulted in a decrease in basal promoter activity in both alphaTSH and alphaT3 cells. Enhancer function was completely abolished by the PGBE site mutation in alphaT3 gonadotropes, whereas some stimulatory activity remained in alphaTSH thyrotropes. Mutation of the gonadotrope specific element (GSE), which binds SF1 and is important for basal activity in gonadotropes and TRH response in thyrotropes, resulted in declines in basal and enhanced promoter activity only in alphaT3 cells and not in alphaTSH cells. Despite this decrease in enhanced activity, the GSE mutated promoter still retained some enhancer stimulated activity, suggesting that the PGBE site still functionally interacts in the absence of an intact GSE. This mutation had no effect in alphaTSH cells. These data suggest that although the enhancer works in both cell types it exhibits cell type specific functional characteristics.
journal_name
Mol Cell Endocrinoljournal_title
Molecular and cellular endocrinologyauthors
Wood WM,Dowding JM,Sarapura VD,McDermott MT,Gordon DF,Ridgway ECdoi
10.1016/s0303-7207(98)00110-5subject
Has Abstractpub_date
1998-07-25 00:00:00pages
141-52issue
1-2eissn
0303-7207issn
1872-8057journal_volume
142pub_type
杂志文章abstract：:Peroxisome proliferator-activated receptors (PPAR)α have been shown to exert immunomodulatory effects in autoimmune disorders; no study evaluated the effect of PPARα activation in Graves' ophthalmopathy (GO). We show the presence of PPARα, δ and γ in GO fibroblasts and preadipocytes. PPARα activators have a potent inh...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2011.11.001
更新日期：2012-02-26 00:00:00
abstract：:The testicular Sertoli cell produces an extracellular androgen-binding protein (ABP) that binds testosterone and dihydrotestosterone with high affinity. The ABP gene also encodes plasma sex hormone-binding globulin (SHBG), which is produced by the liver of most species. Unlike the human, adult rats and mice do not exp...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(93)90096-3
更新日期：1993-10-01 00:00:00
abstract：:Neuropeptide Y (NPY) is expressed in adipose tissue and is involved in adipocyte metabolism. Although NPY impacts on glucose utilization in vivo, the underlying cellular mechanism is yet to be fully elucidated. In this study we investigated the effect of NPY on the insulin-stimulated translocation of glucose transport...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2011.07.028
更新日期：2012-01-02 00:00:00
abstract：:We have examined the relationship between extracellular Ca2+, cytosolic free Ca2+ and insulin release in the clonal beta-cell line HIT-T15. Glucose-stimulated insulin release was dependent on the extracellular Ca2+ concentration in a dose-related manner; the threshold medium Ca2+ concentration for glucose-stimulated i...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(89)90162-7
更新日期：1989-08-01 00:00:00
abstract：:The present study correlated concentrations of activin A and follistatin in follicular fluid (FF) from human small antral follicles to FF concentrations of AMH, inhibin B, progesterone, and oestradiol and to the mRNA expression of FSH-receptor (FSHR), LH-receptor (LHR), AMH-receptor2 (AMHR2), CYP19a, and androgen-rece...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2011.07.051
更新日期：2012-06-05 00:00:00
abstract：:Pituitary cultures from adult rats contain two subtypes of prolactin (PRL) cells, small-plaque (SP) and large-plaque (LP) lactotropes, which exhibit distinct rates of basal secretion and thereby form PRL plaques of different sizes in reverse hemolytic plaque assay experiments. In the present study, we have used plaque...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(93)90007-7
更新日期：1993-04-01 00:00:00
abstract：:We have used a new methodology to generate a monospecific antiserum to the corticotropin (ACTH) receptor on mouse Y-1 adrenal cells. Using immunoaffinity chromatography the ACTH receptor was purified, and the molecular structure and 125I-ACTH binding characteristics were determined. A molecular weight (Mr) of 225 000 ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(86)90099-7
更新日期：1986-01-01 00:00:00
abstract：:Sterol 14 alpha-demethylase (CYP51) is the single cytochrome P450 (CYP) required for sterol biosynthesis in different phyla, and it is the most widely distributed P450 gene family being found in all biological kingdoms. It catalyzes the first step following cyclization in sterol biosynthesis such as removal of the 14 ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2003.11.016
更新日期：2004-02-27 00:00:00
abstract：:It has been suggested that activation of mitochondrial respiration by thyroid hormone results in oxidative tissue injury secondary to increased reactive oxygen species production. In order to throw light on this subject, the effects of thyroid state on O2 consumption and H2O2 release by rat liver mitochondria were inv...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(02)00332-5
更新日期：2003-07-31 00:00:00
abstract：:The availability of regulatory sequences directing tissue-specific expression of transgenes in genetically modified mice and large animals is a prerequisite for the development of adequate models for human diseases. The rat insulin 2 gene (Ins2) promoter, widely used to achieve transgene expression in pancreatic beta-...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2009.08.001
更新日期：2010-02-05 00:00:00
abstract：:Calbindin-D9k (CaBP-9k) is a high affinity calcium binding protein that is highly expressed in the duodenum, kidney, uterus, and pituitary glands. Previous studies have shown that CaBP-9k expression is regulated by several steroid hormones, such as 1,25-dihydroxyvitamin D3, glucocorticoids, 17beta-estradiol (E2), and ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2007.07.009
更新日期：2007-10-15 00:00:00
abstract：CONTEXT:Apart from 21 Hydroxylase deficiency, other subtypes of congenital adrenal hyperplasia (CAH) are rare. We studied the clinical features and molecular genetics of a relatively large series of patients with CYP17A1, HSD3β2 and StAR deficiencies. PATIENTS AND METHODS:We studied 21 patients including 7 patients wi...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2017.08.022
更新日期：2018-02-05 00:00:00
abstract：:Chemotactic and mitogenic activities of granulosa cells in developing follicles were studied. Immature rats were subcutaneously injected with 20 IU of pregnant mare's serum gonadotrophin and killed at various intervals after injection. The ovaries were removed and granulosa cells were isolated and cultured in a serum-...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(92)90070-m
更新日期：1992-03-01 00:00:00
abstract：:Tissue slices or dispersed cells of bovine parathyroid gland were incubated with [3H]leucine to label the intracellular proteins and then tested for their secretory response to isoproterenol and cycloheximide at different calcium concentrations. Secretion of the newly synthesized as well as the older PTH and SP-I was ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(83)90164-8
更新日期：1983-12-01 00:00:00
abstract：:The contributions of prolactin (PRL) to breast cancer are becoming increasingly recognized. To better understand the role for PRL in this disease, its interactions with other oncogenic growth factors and hormones must be characterized. Here, we review our current understanding of PRL crosstalk with other mammary oncog...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2009.03.014
更新日期：2009-08-13 00:00:00
abstract：:Although parathyroid hormone (PTH) has long been known to act as a bone anabolic agent when administered intermittently, the exact underlying mechanisms remain largely unknown. Amphiregulin (AREG), a ligand of the epidermal growth factor receptor, has been identified to be a PTH target gene in vitro and in vivo. Here,...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2015.09.031
更新日期：2015-12-05 00:00:00
abstract：:The introduction of exogenous DNA into mammalian cells is commonly used to study the functions of gene products. However cells in primary culture are usually refractory to most transfection systems. Here we investigated the ability of a new lipid formulation, FuGENE 6 transfection reagent, to promote DNA uptake into d...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(98)00122-1
更新日期：1998-07-25 00:00:00
abstract：:Mutations in FGFR1, GNRHR, PROK2, PROKR2, TAC3, or TACR3 underlie isolated hypogonadotropic hypogonadism (IHH) with clinically variable phenotypes, and, by causing incomplete intrauterine activation of the hypothalamic-pituitary-gonadal axis, may lead to cryptorchidism. To investigate the role of defects in these gene...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2011.05.015
更新日期：2011-07-20 00:00:00
abstract：:Endometrial cancer is the most common malignancy of the female genital tract. Its incidence correlates with prolonged estrogen stimulation unopposed by progesterone or synthetic progestins. Estrogen and progestin action is regulated at the pre-receptor level, by interconversion of active hormones (estradiol (E2), prog...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2005.10.009
更新日期：2006-03-27 00:00:00
abstract：:Detailed imaging of the pituitary gland is a prerequisite for a successful outcome of transsphenoidal hypophysectomy in dogs because it allows for accurate preoperative localization and assessment of the size of the pituitary gland. Cisternography allows assessment of even small increases in the height of the pituitar...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(02)00282-4
更新日期：2002-11-29 00:00:00
abstract：:GLP-1, incretin with insulin-independent antidiabetic properties, is insulinomimetic upon glucose metabolism in extrapancreatic tissues, acting through specific receptors not associated to adenylate cyclase activation. We investigated the role of enzymes mediating insulin actions, in the GLP-1-induced glycogen synthas...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(03)00146-1
更新日期：2003-06-30 00:00:00
abstract：BACKGROUND:Mono-2-ethylhexyl phthalate (MEHP), an important metabolite of di (2-ethylhexyl) phthalate (DEHP), can induce lipid metabolic disorder. Previous studies have shown that MEHP promotes 3T3-L1 cell differentiation; however, the underlying mechanism is unclear. The present study was performed to investigate the ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2019.01.012
更新日期：2019-03-15 00:00:00
abstract：:The rate of dissociation of recombinant, purified human estrogen receptor alpha (ERalpha) from a fluorescein-labeled DNA containing the consensus vitellogenin ERE sequence (F-vitERE) was determined in real time using fluorescence anisotropy. The complex of estradiol-occupied ERalpha with F-vitERE had an apparent disso...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(01)00395-1
更新日期：2001-04-25 00:00:00
abstract：:In the frog Xenopus laevis, vitellogenin is the major estrogen-induced protein in the liver. We have characterized an additional secreted protein, of 45,000 Da and designated Ep45, which is also responsive to estrogen treatment. Like vitellogenin, Ep45 is not normally found in the plasma nor synthesized by the liver o...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(87)90064-5
更新日期：1987-01-01 00:00:00
abstract：:In vitro RNA synthesis has been analyzed using autoradiographic and electrophoretic methods in isolated 1-2 mm segments of rat seminiferous tubules. The cellular composition of each segment was accurately identified using microscopic analysis of the transillumination pattern of the freshly isolated, unstained, seminif...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(76)90082-4
更新日期：1976-08-01 00:00:00
abstract：:The signal transducers and activators of transcriptions (Stats) are central mediators of cytokine responses especially in hematopoietic cells. The detailed molecular mechanisms of Stat activation, particularly the role of post-translational modifications and co-operation with cellular transcription factors are subject...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(01)00588-3
更新日期：2001-10-25 00:00:00
abstract：:Near the completion of growth, mammalian oocytes acquire the competence to resume and complete meiosis. In vivo the preovulatory LH surge triggers the resumption of meiosis in the oocyte contained in preovulatory follicles. When immature oocytes and the surrounding cumulus cells are released from their follicular envi...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/s0303-7207(02)00270-8
更新日期：2002-11-29 00:00:00
abstract：:The degradation products generated from A14 and B26 125I-labelled insulins in liver endosomes in vivo and in vitro have been isolated by high-performance liquid chromatography and cleavages in the B chain have been identified by automated radiosequence analysis. In rats sacrificed various times after injection of each...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(90)90142-u
更新日期：1990-09-10 00:00:00
abstract：:We have identified a specific LHR mRNA binding protein that selectively binds to the polypyrimidine-rich bipartite sequence in the coding region of the LHR mRNA and accelerates its degradation. This process has been shown to be one of the mechanisms that is responsible for the loss of the steady-state levels of LHR mR...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2010.05.014
更新日期：2010-11-25 00:00:00
abstract：:Maternal effects on early postnatal development in mammals are mediated, in part, by milk-borne bioactive factors transmitted from mother to nursing offspring. The term 'lactocrine' was coined to describe this mode of signaling. Relaxin (RLX), one of a family of neohormones found in mammals, is detectable in milk from...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2019.01.003
更新日期：2019-05-01 00:00:00
