Abstract:
:MI-ER1 is a novel transcriptional regulator that plays a critical role in embryonic development and is differentially expressed in breast carcinoma. The MI-ER1 protein sequence is highly conserved among species, with 95% identity between mouse and humans and 72% between Xenopus and mouse. There are two major protein isoforms, MI-ER1alpha and MI-ER1beta, which differ in the sequence of their C-terminus. MI-ER1alpha is of particular interest because it contains a consensus LXXLL nuclear receptor interaction motif and the current study was undertaken to determine the expression pattern of MI-ER1alpha protein in adult mouse tissues. Immunohistochemical analysis of paraffin-embedded tissue using an MI-ER1alpha-specific antibody revealed that the majority of mouse adult tissues examined showed very weak or no immunoreactivity; these included tissues of the lung, liver, intestine, uterus, spleen, lymph node, bladder as well as skeletal muscle. Interestingly, a subset of endocrine tissues displayed intense staining for MI-ER1alpha. Specifically, the islets of Langerhans, the zona glomerulosa and medulla of the adrenal gland, the ovary and the hypothalamus were intensely stained. In addition, both anterior and posterior pituitary showed moderate immunoreactivity, as did the parafollicular cells of the thyroid gland and Leydig cells and spermatids in the testes. Negative endocrine tissues included follicular cells of the thyroid gland and the X zone of the adrenal cortex. A few non-endocrine tissues displayed moderate immunoreactivity; these included all tubules and collecting ducts in the kidney, myocardial and endocardial layers of the heart, the hippocampal formation, pyramidal neurons in the cortex and the ductal epithelium of the mammary gland. In all cases, MI-ER1alpha immunoreactivity was cytoplasmic. This study represents the first immunohistochemical analysis of MI-ER1alpha expression in mammals and our data suggest that this transcriptional regulator plays a role in specific endocrine pathways.
journal_name
J Mol Histoljournal_title
Journal of molecular histologyauthors
Thorne LB,McCarthy PL,Paterno GD,Gillespie LLdoi
10.1007/s10735-007-9116-3subject
Has Abstractpub_date
2008-02-01 00:00:00pages
15-24issue
1eissn
1567-2379issn
1567-2387journal_volume
39pub_type
杂志文章abstract::Tyrosyl-DNA phosphodiesterase 1 (Tdp1) is a DNA repair enzyme that processes blocked 3' ends of DNA breaks. Functional loss of Tdp1 causes spinocerebellar ataxia with axonal neuropathy type 1 (SCAN1). Based on the prominent cytoplasmic expression of Tdp1 in the neurons presumably affected in SCAN1, we hypothesized tha...
journal_title:Journal of molecular histology
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journal_title:Journal of molecular histology
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journal_title:Journal of molecular histology
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journal_title:Journal of molecular histology
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journal_title:Journal of molecular histology
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journal_title:Journal of molecular histology
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journal_title:Journal of molecular histology
pub_type: 杂志文章
doi:10.1007/s10735-020-09918-0
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journal_title:Journal of molecular histology
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journal_title:Journal of molecular histology
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journal_title:Journal of molecular histology
pub_type: 杂志文章
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abstract::Vesicular monoamine transporter 2 (VMAT2) is expressed in pancreatic beta cells and has recently been proposed as a target for measurement of beta cell mass in vivo. We questioned, (1) What proportion of beta cells express VMAT2? (2) Is VMAT2 expressed by other pancreatic endocrine or non-endocrine cells? (3) Is the r...
journal_title:Journal of molecular histology
pub_type: 杂志文章,多中心研究
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更新日期:2008-10-01 00:00:00
abstract::Dentin is a major component of teeth that protects dental pulp and maintains tooth health. Bone morphogenetic protein (BMP) signaling is required for the formation of dentin. Mice lacking a BMP type I receptor, activin A receptor type 1 (ACVR1), in the neural crest display a deformed mandible. Acvr1 is known to be exp...
journal_title:Journal of molecular histology
pub_type: 杂志文章
doi:10.1007/s10735-018-9806-z
更新日期:2019-02-01 00:00:00
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journal_title:Journal of molecular histology
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doi:10.1007/s10735-015-9609-4
更新日期:2015-04-01 00:00:00
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doi:10.1007/s10735-013-9489-4
更新日期:2013-08-01 00:00:00
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pub_type: 撤回出版物,收录出版
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journal_title:Journal of molecular histology
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更新日期:2021-02-01 00:00:00
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journal_title:Journal of molecular histology
pub_type: 杂志文章
doi:10.1007/s10735-019-09829-9
更新日期:2019-08-01 00:00:00
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journal_title:Journal of molecular histology
pub_type: 杂志文章
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更新日期:2004-09-01 00:00:00
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journal_title:Journal of molecular histology
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更新日期:2004-11-01 00:00:00
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journal_title:Journal of molecular histology
pub_type: 杂志文章
doi:10.1007/s10735-005-9012-7
更新日期:2005-10-01 00:00:00
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更新日期:2011-06-01 00:00:00