scholarly journals COL3A1 Gene

2020 ◽  
Author(s):  
Keyword(s):  
2021 ◽  
Vol 14 (7) ◽  
pp. e243132
Author(s):  
Inês Pimenta ◽  
Rita Varudo ◽  
Filipa Castelao ◽  
Filipe André Gonzalez

Vascular Ehlers-Danlos syndrome is caused by mutations of COL3A1 gene coding for type III collagen. The main clinical features involve a propensity to arterial tears leading to several life-threatening conditions and intensive care unit admission. We, herein, report the case of a 34-year-old woman presenting with an aneurysmal subarachnoid haemorrhage. Endovascular coil treatment was attempted; however, the procedure was complicated by dissection of the left iliac artery and abdominal aorta. Hospital management was marked by a series of vascular and haemorrhagic complications. These events, together with some distinctive physical features and medical history, raised the suspicion of vascular type of Ehlers-Danlos syndrome. Neurological evolution was not favourable, and the patient evolved to brain death. Genetic testing was available postmortem and identified a mutation in the COL3A1 gene. This case illustrates the importance of medical history and clinical suspicion for diagnosis, which often goes unnoticed until major complications occur.


2019 ◽  
Vol 31 (1) ◽  
pp. 73-78 ◽  
Author(s):  
Fernando Henrique Teixeira ◽  
César Eduardo Fernandes ◽  
Ricardo Peres do Souto ◽  
Emerson de Oliveira

1995 ◽  
Vol 311 (3) ◽  
pp. 939-943 ◽  
Author(s):  
A A Chiodo ◽  
D O Sillence ◽  
W G Cole ◽  
J F Bateman

A novel heterozygous mutation of the COL3A1 gene that encodes the alpha 1(III) chains of type III collagen was identified in a family with the acrogeric form of Ehlers-Danlos syndrome type IV (EDS-IV). Cultured dermal fibroblasts produced normal and shortened alpha 1(III) chains. The triple helix of the latter chain was shortened owing to a 33 amino acid deletion of Gly-184 to Pro-216. The corresponding region of cDNA lacked 99 base pairs from nucleotides 1051 to 1149. The deletions corresponded exactly to the normal sequence encoded by exon 17 of the COL3A1 gene. The proband was heterozygous for a T to G transversion at position +2 of intron 17, which resulted in skipping of exon 17. The splicing defect was not corrected by growing the fibroblasts at 33 degrees C and no other splicing variants were identified at 33 or 37 degrees C. The affected brother had the same mutation but his unaffected mother did not. Heterotrimeric type III collagen molecules containing normal and mutant chains were retained within the cell. The mutant homotrimeric molecules were modified and secreted normally and were thermally stable. These normal characteristics of the mutant homotrimers suggested that the loss of ten Gly-Xaa-Yaa triplets (where Gly-Xaa-Yaa is a repetitive amino acid triplet structure in which Xaa and Yaa are other amino acids, proline and hydroxyproline being more common in the Yaa position) did not adversely affect the formation and stability of the triple helix or the structural requirements for secretion. However, the mutant homotrimers were not incorporated into the extracellular matrix of an in vitro model of EDS-IV dermis. The EDS-IV phenotype in this family was probably due to a deficiency in the amount of normal type III collagen available for formation of the heterotypic collagen fibrils of the extracellular matrix. Intracellular and extracellular quality-control mechanisms prevented the incorporation of heterotrimeric and homotrimeric mutant type III collagen molecules into the cross-linked extracellular matrix.


2015 ◽  
Vol 23 (12) ◽  
pp. 1657-1664 ◽  
Author(s):  
Michael Frank ◽  
Juliette Albuisson ◽  
Brigitte Ranque ◽  
Lisa Golmard ◽  
Jean-Michael Mazzella ◽  
...  

1993 ◽  
Vol 46 (3) ◽  
pp. 278-283 ◽  
Author(s):  
Paolo Narcisi ◽  
Yuli Wu ◽  
Gerard Tromp ◽  
James J Earley ◽  
Allan J. Richards ◽  
...  

2011 ◽  
Vol 300 (2) ◽  
pp. F531-F539 ◽  
Author(s):  
Christine K. Abrass ◽  
Kim Hansen ◽  
Viorica Popov ◽  
Oleg Denisenko

Aging nephropathy is a slowly progressive fibrotic process that affects all compartments of the kidney and eventually impairs kidney function; however, little is known about the mechanisms that contribute to this process. These studies examined the epigenetic control of expression of collagen III (Col3a1), a matrix protein that contributes to kidney fibrosis. Using real-time PCR, Western blotting, and chromatin immunoprecipitation assay of kidneys harvested from 4- and 24-mo-old ad libitum-fed F344 rats, we found increased transcription of Col3a1 that was associated with increased RNA polymerase II recruitment despite elevated posttranslational histone modification (H3K27me3) normally associated with gene silencing. A reduction in the density of another repressive modification (H3K9me3) at the Col3a1 locus in aged rats suggests that cooperation between Polycomb- and heterochromatin-mediated systems are required to maintain repression of the Col3a1 gene. These findings demonstrate alterations in epigenetic control of gene expression in association with the fibrosis of aging nephropathy.


Animals ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 38 ◽  
Author(s):  
Henny Akit ◽  
Cherie Collins ◽  
Fahri Fahri ◽  
Alex Hung ◽  
Daryl D’Souza ◽  
...  

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