FOXM1 Gene forkhead box M1
- Known as:
- FOXM1 Gene forkhead box M1
- Catalog number:
- FOXN2
- Category:
- -
- Supplier:
- Transposagen
- Gene target:
- FOXM1 Gene forkhead box M1
Related genes to: FOXM1 Gene forkhead box M1
- Gene:
- FOXD3 NIH gene
- Name:
- forkhead box D3
- Previous symbol:
- -
- Synonyms:
- Genesis, HFH2
- Chromosome:
- 1p31.3
- Locus Type:
- gene with protein product
- Date approved:
- 1999-12-22
- Date modifiied:
- 2015-08-25
- Gene:
- FOXM1 NIH gene
- Name:
- forkhead box M1
- Previous symbol:
- FKHL16
- Synonyms:
- HFH-11, trident, HNF-3, INS-1, MPP2, MPHOSPH2, TGT3
- Chromosome:
- 12p13.33
- Locus Type:
- gene with protein product
- Date approved:
- 1997-07-25
- Date modifiied:
- 2016-10-05
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- Abstract β-Cell mass increases during pregnancy in adaptation to the insulin resistance of pregnancy. This increase is accompanied by an increase in β-cell proliferation, a process that requires intact prolactin receptor (Prlr) signalling. Previously, it was found that during pregnancy, heterozygous prolactin receptor-null (Prlr(+/-)) mice had lower number of β-cells, lower serum insulin and higher blood glucose levels than wild-type (Prlr(+/+)) mice. An unexpected observation was that the glucose homeostasis of the experimental mouse depends on the genotype of her mother, such that within the Prlr(+/+) group, the Prlr(+/+) offspring derived from Prlr(+/+) mothers (Prlr(+/+(+/+))) had higher β-cell mass and lower blood glucose than those derived from Prlr(+/-) mothers (Prlr(+/+(+/-))). Pathways that are known to regulate β-cell proliferation during pregnancy include insulin receptor substrate-2, Akt, menin, the serotonin synthetic enzyme tryptophan hydroxylase-1, Forkhead box M1 and Forkhead box D3. The aim of the present study was to determine whether dysregulation in these signalling molecules in the islets could explain the maternal effect on the phenotype of the offspring. It was found that the pregnancy-induced increases in insulin receptor substrate-2 and Akt expression in the islets were attenuated in the Prlr(+/+(+/-)) mice in comparison to the Prlr(+/+(+/+)) mice. The expression of Forkhead box D3, which plays a permissive role for β-cell proliferation during pregnancy, was also lower in the Prlr(+/+(+/-)) mice. In contrast, the pregnancy-induced increases in phospho-Jak2, tryptophan hydroxylase-1 and FoxM1, as well as the pregnancy-associated reduction in menin expression, were comparable between the two groups. There was also no difference in expression levels of genes that regulate insulin synthesis and secretion (i.e. glucose transporter 2, glucokinase and pancreatic and duodenal homeobox-1) between these two groups. Taken together, these results suggest that the in utero environment of the Prlr(+/-) mother confers long-term changes in the pancreatic islets of her offspring such that when the offspring themselves became pregnant, they cannot adapt to the increased insulin demands of their own pregnancy. - Source: PubMed
Publication date: 2012/12/17
Huang Carol - A complete molecular understanding of β-cell mass expansion will be useful for the improvement of therapies to treat diabetic patients. During normal periods of metabolic challenges, such as pregnancy, β-cells proliferate, or self-renew, to meet the new physiological demands. The transcription factor Forkhead box D3 (Foxd3) is required for maintenance and self-renewal of several diverse progenitor cell lineages, and Foxd3 is expressed in the pancreatic primordium beginning at 10.5 d postcoitum, becoming localized predominantly to β-cells after birth. Here, we show that mice carrying a pancreas-specific deletion of Foxd3 have impaired glucose tolerance, decreased β-cell mass, decreased β-cell proliferation, and decreased β-cell size during pregnancy. In addition, several genes known to regulate proliferation, Foxm1, Skp2, Ezh2, Akt2, and Cdkn1a, are misregulated in islets isolated from these Foxd3 mutant mice. Together, these data place Foxd3 upstream of several pathways critical for β-cell mass expansion in vivo. - Source: PubMed
Publication date: 2011/09/27
Plank Jennifer LFrist Audrey YLeGrone Alison WMagnuson Mark ALabosky Patricia A - Human Forkhead-box (FOX) gene family consists of at least 43 members, including FOXA1, FOXA2, FOXA3, FOXB1, FOXC1, FOXC2, FOXD1, FOXD2, FOXD3, FOXD4, FOXD5 (FOXD4L1), FOXD6 (FOXD4L3), FOXE1, FOXE2, FOXE3, FOXF1, FOXF2, FOXG1 (FOXG1B), FOXH1, FOXI1, FOXJ1, FOXJ2, FOXJ3, FOXK1, FOXK2, FOXL1, FOXL2, FOXM1, FOXN1, FOXN2 (HTLF), FOXN3 (CHES1), FOXN4, FOXN5 (FOXR1), FOXN6 (FOXR2), FOXO1 (FOXO1A), FOXO2 (FOXO6), FOXO3 (FOXO3A), FOXO4 (MLLT7), FOXP1, FOXP2, FOXP3, FOXP4, and FOXQ1. FOXE3-FOXD2 (1p33), FOXQ1-FOXF2-FOXC1 (6p25.3), and FOXF1-FOXC2-FOXL1 (16q24.1) loci are FOX gene clusters within the human genome. Members of FOX subfamilies A-G, I-L and Q were grouped into class 1 FOX proteins, while members of FOX subfamilies H and M-P were grouped into class 2 FOX proteins. C-terminal basic region within the FOX domain was the common feature of class 1 FOX proteins. FOXH1 and FOXO1 mRNAs are expressed in human embryonic stem (ES) cells. FOXC1, FOXC2, FOXE1, FOXE3, FOXL2, FOXN1, FOXP2 and FOXP3 genes are mutated in human congenital disorders. FOXA1 gene is amplified and over-expressed in esophageal and lung cancer. FOXM1 gene is up-regulated in pancreatic cancer and basal cell carcinoma due to the transcriptional regulation by Sonic Hedgehog (SHH) pathway. FOXO1 gene is fused to PAX3 or PAX7 genes in rhabdomyosarcoma. FOXO3 and FOXO4 genes are fused to MLL gene in hematological malignancies. Deregulation of FOX family genes leads to congenital disorders, diabetes mellitus, or carcinogenesis. Expression profiles, genetic alterations and epigenetic changes of FOX family genes as well as binding proteins and target genes of FOX family transcription factors should be comprehensively investigated to develop novel therapeutics and preventives for human diseases. - Source: PubMed
Katoh MasukoKatoh Masaru - The recognition between transcription factors and their DNA binding sites is a highly dynamic process. During transcriptional regulation, transcription factors must bind to or dissociate from their cognate DNA binding sites. The winged helix DNA binding motif is one of many highly conserved DNA binding motifs identified in transcription factors. Backbone dynamics has been studied on the 15N- and 2H-enriched winged helix family member Genesis. Our data show that the overall motions of the single domain Genesis are better described by more than two autocorrelation times (taum). Our data also demonstrate that Genesis shows structure specific conformation exchange characterized by Rex. Therefore, our results indicate that the structure of Genesis is highly dynamic and that secondary structure elements in Genesis have collective motions in the nanosecond to millisecond time scale. Since the winged helix DNA binding motif is highly conserved, this unique dynamic property observed in Genesis is also likely to be conserved in other winged helix family members and important in DNA binding. - Source: PubMed
Jin CMarsden IChen XLiao X