Trichothiodystrophy Syndromes
|
0.100 |
AlteredExpression
|
disease |
BEFREE |
Using quantitative imaging of TFIIH in living mouse cells, we found that these molecules reduce the intracellular concentration of TFIIH and its transcriptional activity to levels similar to that observed in individuals with trichothiodystrophy owing to mutated <i>TTD-A</i> Our results provide a proof of concept of fragment-based drug discovery, demonstrating the utility of small molecules for targeting p8 dimerization to modulate the transcriptional machinery, an approach that may help inform further development in anticancer therapies.
|
30068551 |
2018 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
The subtle transcriptional differences found between various TFIIH variants thus participate in the phenotypic variability observed among XP, XP/CS, and TTD individuals.
|
25620205 |
2015 |
Trichothiodystrophy Syndromes
|
0.100 |
AlteredExpression
|
disease |
BEFREE |
TFIIH-dependent MMP-1 overexpression in trichothiodystrophy leads to extracellular matrix alterations in patient skin.
|
25605938 |
2015 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
To further grasp the molecular mechanisms that govern transcription, we focused our attention on the general transcription factor TFIIH, which gives rise, once mutated, to Trichothiodystrophy (TTD), a rare autosomal premature-ageing disease causing inter alia, metabolic dysfunctions.
|
25340339 |
2014 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
Our results suggested a link between TTD- but not XP-associated XPD mutations, placental maldevelopment and risk of pregnancy complications, possibly due to impairment of TFIIH-mediated functions in placenta.
|
22234153 |
2012 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
TTD group A (TTD-A) patients carry mutations in the smallest TFIIH subunit, TTDA, which is an 8-kDa protein that dynamically interacts with TFIIH.
|
21730288 |
2011 |
Trichothiodystrophy Syndromes
|
0.100 |
AlteredExpression
|
disease |
BEFREE |
Ongoing investigations on TTD are elucidating not only the pathogenesis of the disease, which appears to be mainly related to transcriptional impairment, but also the modalities of NER and transcription in human cells and how TFIIH operates in these two fundamental cellular processes.
|
19931493 |
2010 |
Trichothiodystrophy Syndromes
|
0.100 |
Biomarker
|
disease |
BEFREE |
Moreover, mutations in any of these three TFIIH subunits also disturb the overall architecture of the TFIIH complex and its ability to transactivate certain nuclear receptor-responsive genes, explaining in part, some of the TTD phenotypes.
|
19808800 |
2009 |
Trichothiodystrophy Syndromes
|
0.100 |
Biomarker
|
disease |
BEFREE |
Accordingly, defects in specific enzymatic functions typically result in XP, dissociation of the CAK subunit from TFIIH is associated with XP/CS and a more generalized destabilization of TFIIH gives rise to TTD.
|
18077223 |
2008 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
p8/TTDA overexpression enhances UV-irradiation resistance and suppresses TFIIH mutations in a Drosophila trichothiodystrophy model.
|
19008953 |
2008 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
Patients with the rare neurodevelopmental repair syndrome known as group A trichothiodystrophy (TTD-A) carry mutations in the gene encoding the p8 subunit of the transcription and DNA repair factor TFIIH.
|
19172752 |
2008 |
Trichothiodystrophy Syndromes
|
0.100 |
AlteredExpression
|
disease |
BEFREE |
Mutations in three of the genes encoding the XPB, XPD and TTDA components of transcription factor TFIIH can result in the clinical phenotype of trichothiodystrophy (TTD).
|
18579452 |
2008 |
Trichothiodystrophy Syndromes
|
0.100 |
AlteredExpression
|
disease |
BEFREE |
The gene responsible for the TTD-A group of the DNA repair deficient disease trichothiodystrophy has been identified as a small, 8 kDa, component of the transcription factor TFIIH which contributes to the stability and concentration of TFIIH in vivo.
|
15590337 |
2005 |
Trichothiodystrophy Syndromes
|
0.100 |
Biomarker
|
disease |
BEFREE |
Subtle differences in the effects of these different mutations on the many activities of TFIIH and on its stability determine the clinical outcomes, which can be XP, TTD, XP with CS, XP with TTD or COFS.
|
14726016 |
2003 |
Trichothiodystrophy Syndromes
|
0.100 |
Biomarker
|
disease |
BEFREE |
Moreover, when XPD mutations prevent interaction with the p44 subunit of TFIIH, transactivation directed by certain nuclear receptors is inhibited, regardless of TTD versus XP phenotype, thus explaining the overlapping symptoms.
|
12820975 |
2003 |
Trichothiodystrophy Syndromes
|
0.100 |
AlteredExpression
|
disease |
BEFREE |
We have also measured TFIIH levels in cells in which different mutations in the XPD gene are associated with clinical symptoms not of TTD but of the highly cancer-prone disorder xeroderma pigmentosum (XP).
|
12393803 |
2002 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
Mutations in the XPD helicase component of TFIIH can result in the diverse clinical features associated with xeroderma pigmentosum (XP) and trichothiodystrophy (TTD).
|
11734544 |
2001 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
The repair-deficient form of trichothiodystrophy (TTD) most often results from mutations in the genes XPB or XPD, encoding helicases of the transcription/repair factor TFIIH.
|
11062469 |
2000 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
Mutations in the DNA-dependent ATPase/helicase subunits of TFIIH, XPB and XPD, are associated with three inherited syndromes as follows: xeroderma pigmentosum with or without Cockayne syndrome and trichothiodystrophy.
|
10660593 |
2000 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
In most cases, xeroderma pigmentosum group D (XP-D) and trichothiodystrophy (TTD) patients carry mutations in the carboxy-terminal domain of the evolutionarily conserved helicase XPD, which is one of the subunits of the transcription/repair factor TFIIH (refs 1,2).
|
9771713 |
1998 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
Thus, mutations in TFIIH components may, on top of a repair defect, also cause transcriptional insufficiency, which may explain part of the non-XP clinical features of TTD.
|
9012405 |
1997 |
Trichothiodystrophy Syndromes
|
0.100 |
GeneticVariation
|
disease |
BEFREE |
The dysfunction of TFIIH could result in a large panel of genetic disorders, such as xeroderma pigmentosum, Cockayne's syndrome and trichothiodystrophy.
|
7613092 |
1995 |