Abstract:
:Porcine LH receptor ectodomain was overexpressed in insect cells and lepidopteran larvae using the recombinant baculovirus expression system. A low multiplicity of infection yielded the largest active production, of approximately 10(7) receptors/cell or 3 micrograms active receptor/mg total protein in infected cells. The truncated ectodomain solubilized with Triton X-100 bound its ligand with a high affinity which was comparable with that of the native membrane receptor. Increasing the multiplicity of infection resulted in an optimum protein production of 0.6 mg receptor/mg total protein in infected cells. This receptor was largely inactive, probably trapped within aggregation pools. Active receptor could be recovered by dilution of the samples. No secretion of recombinant receptor was ever observed whatever the conditions of infection. Expression of the recombinant receptor in insect larvae was also tested. This low-cost system failed both to increase the amount of active receptor and to induce secretion into the haemolymph. Two methods remain for producing sizeable amounts of active receptor with this baculovirus/insect cell system. One relies on immunoaffinity purification of the active protein and requires large-scale production, and the other is based on the purification of overexpressed inactive receptor followed by renaturation.
journal_name
J Mol Endocrinoljournal_title
Journal of molecular endocrinologyauthors
Pajot-Augy E,Couture L,Bozon V,Remy JJ,Biache G,Severini M,Huet JC,Pernollet JC,Salesse Rdoi
10.1677/jme.0.0140051subject
Has Abstractpub_date
1995-02-01 00:00:00pages
51-66issue
1eissn
0952-5041issn
1479-6813journal_volume
14pub_type
杂志文章abstract::Previous studies have shown that, in unstimulated mammary epithelial cells from virgin mice, prolactin receptors are retained intracellularly because of their incomplete N-glycosylation. Activation of the nitric oxide/cGMP pathway stimulates Nacetylglucosamine (NAG) transferase I activity, completion of terminal glyco...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0240377
更新日期:2000-06-01 00:00:00
abstract::Somatostatins (SSs) play important roles in the growth, development and metabolism of vertebrates. In this study, cDNAs for two unique somatostatin receptor variants were cloned and sequenced from rainbow trout. The two cDNAs, one consisting of 1755 bp and the other of 1743 bp, share 63.6% identity in nucleotide seque...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0320165
更新日期:2004-02-01 00:00:00
abstract::Evidence indicates that central regulation of food intake is well conserved along the vertebrate lineage, at least between teleost fish and mammals. However, several differences arise in the comparison between both groups. In this review, we describe similarities and differences between teleost fish and mammals on an ...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章,评审
doi:10.1530/JME-17-0320
更新日期:2018-05-01 00:00:00
abstract::Breast cancer is a heterogeneous disease, and the complexity of breast carcinogenesis is associated with epigenetic modification. There are several major classes of epigenetic enzymes that regulate chromatin activity. This review will focus on the nine mammalian protein arginine methyltransferases (PRMTs) and the dysr...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章,评审
doi:10.1530/JME-18-0224
更新日期:2019-04-01 00:00:00
abstract::Localization of inhibin/activin subunit mRNAs within the macaque ovary from the immediate pre-ovulatory period of the menstrual cycle, when serum immunoreactive inhibin begins to rise, to day 9 of the luteal phase, when serum inhibin concentrations are maximal, was investigated using in-situ hybridization. Ovaries wer...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0100245
更新日期:1993-06-01 00:00:00
abstract::Androgens play an important role in male reproductive development and function. These steroid hormones mediate their actions by binding to the androgen receptor (AR). Diseases such as androgen insensitivity syndrome, prostate cancer, Kennedy's disease, and infertility can be caused by mutations in the AR. To get a bet...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章,评审
doi:10.1677/JME-08-0122
更新日期:2009-01-01 00:00:00
abstract::Estrogen plays an important role in many physiological events including carcinogenesis and the development of human breast cancer. However, the molecular mechanisms of estrogen signaling in cancers have not been clarified hitherto and accurate therapeutic prediction of breast cancer is earnestly desired. We first carr...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0290175
更新日期:2002-10-01 00:00:00
abstract::Octopamine (OA) is an important neuroactive substance that modulates several physiological functions and behaviors of various invertebrate species. This biogenic monoamine, structurally related to noradrenaline, acts as a neurotransmitter, a neuromodulator, or a neurohormone in insects. The tyramine β-hydroxylase (TBH...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1530/JME-12-0202
更新日期:2013-01-11 00:00:00
abstract::Urocortin (Ucn), a corticotropin-releasing factor (CRF)-related neuropeptide binding both CRF type 1 receptor (CRFR1) and CRFR2, has recently been found in prostate cancer. However, no report has yet been known to elucidate the roles of Ucn in prostate cancer via the two receptors. In this study, the expression of bot...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1530/JME-11-0048
更新日期:2011-09-07 00:00:00
abstract::Sexual dimorphism has been found in both mitochondrial functionality and adiponectin expression in white adipose tissue, with female rats presenting more functional mitochondria than males and greater adiponectin expression. However, little is known about the role of sex hormones in this dimorphism. The aim was to elu...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1530/JME-13-0201
更新日期:2014-03-06 00:00:00
abstract::The contribution of hypothalamic appetite-regulating peptides to further hyperphagia accompanying the course of lactation in rats was investigated by using PCR array and real-time PCR. Furthermore, changes in the mRNA expression for appetite-regulating peptides in the hypothalamic arcuate nucleus (ARC) were analyzed a...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1530/JME-13-0015
更新日期:2014-01-30 00:00:00
abstract::A new full-length cDNA (ZFOR4) that encodes an opioid receptor has been isolated from the teleost zebrafish. The encoded polypeptide is 375 amino acids long and shows high sequence similarity to other delta-opioid receptors, including ZFOR1, the other delta-opioid receptor from zebrafish previously characterized by us...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.1.02136
更新日期:2006-12-01 00:00:00
abstract::The mechanism behind Ca(2)(+) entry into the parathyroid cells has been widely debated, and the molecular identities of the responsible ion channels have not been established yet. In this study, we show that the parathyroid cells lack voltage-operated Ca(2)(+) channels. Passive store depletion by thapsigargin, on the ...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/JME-09-0138
更新日期:2010-05-01 00:00:00
abstract::Murine double minute clone 2 (MDM2) is a multifunctional protein, which modulates nuclear receptor-mediated transactivation. In this study, we show that MDM2 significantly enhanced estrogen receptor α (ERα) and ERα/specificity protein-mediated transactivation in MCF-7 and ZR-75 breast cancer cells. This was demonstrat...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/JME-10-0110
更新日期:2011-02-15 00:00:00
abstract::The prevalence of non-alcoholic fatty liver disease (NAFLD), a condition characterized by an excessive accumulation of triglycerides (TGs) in hepatocytes, has dramatically increased globally during recent decades. MicroRNAs (miRs) have been suggested to play crucial roles in many complex diseases and lipid metabolism....
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1530/JME-14-0127
更新日期:2014-12-01 00:00:00
abstract::1,25-(OH)2-Vitamin D3 (1,25-D3) and the thyroid hormone tri-iodothyronine (T3) were previously shown to behave as adipogenic agents in murine Ob17 preadipocytes. Moreover, these agents interfere with each other's action during adipocyte differentiation. T3 receptor (TR) expression and a downmodulation of T3 binding si...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.1.01572
更新日期:2005-02-01 00:00:00
abstract::Oligonucleotide microarrays were used to analyse gene expression profiles in human ZR75-1 breast cancer cells in the presence of 17beta-oestradiol and oestrogen antagonists. Differential gene expression of a number of genes was confirmed by quantitative RNA analysis. In addition to known oestrogen-responsive genes, an...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0270259
更新日期:2001-12-01 00:00:00
abstract::Osteoporosis is a systemic skeletal disease characterized by low bone mass and microarchitectural deterioration of bone tissue. At a given age, bone mass results from the amount of bone acquired during growth, i.e. the peak bone mass (Bonjour et al., 1991, Theintz et al. 1992) minus the age-related bone loss which par...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章,评审
doi:10.1677/jme.0.0260079
更新日期:2001-04-01 00:00:00
abstract::The peroxisome proliferator-activated receptor (PPAR) is a member of the steroid hormone receptor superfamily and is activated by a variety of fibrate hypolipidaemic drugs and non-genotoxic rodent hepatocarcinogens that are collectively termed peroxisome proliferators. A key marker of peroxisome proliferator action is...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0110037
更新日期:1993-08-01 00:00:00
abstract::Insulin-like growth factor-I (IGF-I), transforming growth factor alpha (TGFalpha) and epidermal growth factor (EGF) induced cathepsin D gene expression and reporter gene activity in MCF-7 human breast cancer cells transiently transfected with a construct (pCD1) containing a -2576 to -124 cathepsin D gene promoter inse...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0240193
更新日期:2000-04-01 00:00:00
abstract::Genetic studies have reported association of a polyglycine-encoding GGN repeat in exon 1 of the androgen receptor (AR) gene with common human traits. The polyglycine tract is located in the transactivating domain of the AR protein, suggesting an effect of repeat length on receptor function. Here, we compare the functi...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/JME-06-0072
更新日期:2007-07-01 00:00:00
abstract::The hypothalamic arcuate nucleus (ARC) represents a major component of the neuroendocrine reproductive axis and plays an important role in controlling the onset of puberty as well as age-associated reproductive senescence. Although significant gene expression changes have been observed in the ARC during sexual maturat...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1530/JME-17-0094
更新日期:2017-08-01 00:00:00
abstract::The effects of 1,25-dihydroxyvitamin D3 (1,25-(OH)2D3; 10 nmol/l) on the human monomyelocytic cell line U937 were investigated. Addition of 1,25-(OH)2D3 led to a decrease in cell proliferation which fell at 72 h to 67.8 +/- 4.3% (mean +/- S.E.M.) of control values. The presence of CD14, a surface marker found on matur...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0030043
更新日期:1989-07-01 00:00:00
abstract::Follicle-stimulating hormone (FSH) plays fundamental roles in male and female fertility. FSH is a heterodimeric glycoprotein expressed by gonadotrophs in the anterior pituitary. The hormone-specific FSHβ-subunit is non-covalently associated with the common α-subunit that is also present in the luteinizing hormone (LH)...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章,评审
doi:10.1530/JME-17-0308
更新日期:2018-04-01 00:00:00
abstract::The steroidogenic acute regulatory protein (StAR) is critical to the regulated synthesis of steroids in vertebrates. We have isolated cDNA sequences encoding StAR in the freshwater stingrays Potamotrygon hystrix and P. motoro. A single P. hystrix StAR transcript (3376 bp) and two overlapping P. motoro StAR transcripts...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.1.01857
更新日期:2005-12-01 00:00:00
abstract::Fetal growth restriction is one of the most common obstetrical complications resulting in significant perinatal morbidity and mortality. The most frequent etiology of human singleton fetal growth restriction is placental insufficiency, which occurs secondary to reduced utero-placental perfusion, abnormal placentation,...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章,评审
doi:10.1530/JME-18-0059
更新日期:2019-02-01 00:00:00
abstract::It has been demonstrated that transforming growth factor-β (TGFβ) and other members of TGFβ superfamily play an important role in thyroid proliferative diseases. The deficiencies of SMAD4 are responsible to accelerate the malignant progression of neoplastic lesions in several types of tumors. Therefore, the objective ...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/JME-10-0044
更新日期:2010-10-01 00:00:00
abstract::Nuclear receptors (NRs) have been targets of intensive drug development for decades due to their roles as key regulators of multiple developmental, physiological and disease processes. In breast cancer, expression of the estrogen and progesterone receptor remains clinically important in predicting prognosis and determ...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章,评审
doi:10.1530/JME-16-0082
更新日期:2017-04-01 00:00:00
abstract::Retinoic acid (RA) and sodium butyrate (NaB) are regulators of cell growth and differentiation. We studied their effect on normal (SVC1) or v-Ki-ras-transformed (Ki-SVC1) rat seminal vesicle (SV) epithelial cell lines. The treatment of these cells with 10(-((7( M RA did not produce significant changes in the morpholog...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0240083
更新日期:2000-02-01 00:00:00
abstract::Activins are cytokines of the transforming growth factor beta family, which plays a central role in the determination of cell fate and the regulation of tissue balance. Family members are composed of two subunits and this dimerization is critical for liganding their cognate receptors and execution of proper functions....
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0280137
更新日期:2002-04-01 00:00:00