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5'UTR mutations of ENG cause hereditary hemorrhagic telangiectasia

Damjanovich, Kristy ; Langa, Carmen ; Blanco, Francisco J ; McDonald, Jamie ; Botella, Luisa M ; Bernabeu, Carmelo ; Wooderchak-Donahue, Whitney ; Stevenson, David A ; Bayrak-Toydemir, Pinar

Orphanet journal of rare diseases, 2011-12, Vol.6 (1), p.85-85, Article 85 [Periódico revisado por pares]

England: BioMed Central Ltd

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Título:
5'UTR mutations of ENG cause hereditary hemorrhagic telangiectasia
Autor: Damjanovich, Kristy ; Langa, Carmen ; Blanco, Francisco J ; McDonald, Jamie ; Botella, Luisa M ; Bernabeu, Carmelo ; Wooderchak-Donahue, Whitney ; Stevenson, David A ; Bayrak-Toydemir, Pinar
Assuntos: 5' Untranslated Regions - genetics ; 5'UTR region ; Adolescent ; Adult ; Aged ; Animals ; Antigens, CD - chemistry ; Antigens, CD - genetics ; Base Sequence ; c.-127C > T ; c.-9G > A ; Care and treatment ; Child ; Child, Preschool ; COS Cells ; Diagnosis ; Endoglin ; ENG ; Female ; Gene mutations ; Genetic aspects ; homozygous ; Humans ; Male ; Medical research ; Middle Aged ; Molecular Sequence Data ; Mutation - genetics ; Physiological aspects ; Rare diseases ; Receptors, Cell Surface - chemistry ; Receptors, Cell Surface - genetics ; Risk factors ; Sequence Analysis, DNA ; Telangiectasia, Hereditary Hemorrhagic ; Telangiectasia, Hereditary Hemorrhagic - genetics ; Transfection
É parte de: Orphanet journal of rare diseases, 2011-12, Vol.6 (1), p.85-85, Article 85
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
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Descrição: Hereditary hemorrhagic telangiectasia (HHT) is a vascular disorder characterized by epistaxis, arteriovenous malformations, and telangiectases. The majority of the patients have a mutation in the coding region of the activin A receptor type II-like 1 (ACVRL1) or Endoglin (ENG) gene. However, in approximately 15% of cases, sequencing analysis and deletion/duplication testing fail to identify mutations in the coding regions of these genes. Knowing its vital role in transcription and translation control, we were prompted to investigate the 5'untranslated region (UTR) of ENG. We sequenced the 5'UTR of ENG for 154 HHT patients without mutations in ENG or ACVRL1 coding regions. We found a mutation (c.-127C > T), which is predicted to affect translation initiation and alter the reading frame of endoglin. This mutation was found in a family with linkage to the ENG, as well as in three other patients, one of which had an affected sibling with the same mutation. In vitro expression studies showed that a construct with the c.-127C > T mutation alters the translation and decreases the level of the endoglin protein. In addition, a c.-9G > A mutation was found in three patients, one of whom was homozygous for this mutation. Expression studies showed decreased protein levels suggesting that the c.-9G > A is a hypomorphic mutation. Our results emphasize the need for the inclusion of the 5'UTR region of ENG in clinical testing for HHT.
Editor: England: BioMed Central Ltd
Idioma: Inglês

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5'UTR mutations of ENG cause hereditary hemorrhagic telangiectasia

Damjanovich, Kristy ; Langa, Carmen ; Blanco, Francisco J ; McDonald, Jamie ; Botella, Luisa M ; Bernabeu, Carmelo ; Wooderchak-Donahue, Whitney ; Stevenson, David A ; Bayrak-Toydemir, Pinar

England: BioMed Central Ltd

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