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Mutant Tbl1x male mice have a short life span and do not breed: unexpected findings.
Hu, Yalan; Codner, Gemma F; Stewart, Michelle; La Fleur, Susanne E; van Trotsenburg, Paul A S; Fliers, Eric; Hennekam, Raoul C; Boelen, Anita.
Afiliación
  • Hu Y; Endocrine Laboratory, Department of Laboratory Medicine, University of Amsterdam, Amsterdam, The Netherlands.
  • Codner GF; Amsterdam Gastroenterology, Endocrinology & Metabolism Research Institute, Amsterdam, The Netherlands.
  • Stewart M; The Mary Lyon Centre at MRC Harwell, Harwell Campus, Oxfordshire, UK.
  • La Fleur SE; The Mary Lyon Centre at MRC Harwell, Harwell Campus, Oxfordshire, UK.
  • van Trotsenburg PAS; Endocrine Laboratory, Department of Laboratory Medicine, University of Amsterdam, Amsterdam, The Netherlands.
  • Fliers E; Amsterdam Gastroenterology, Endocrinology & Metabolism Research Institute, Amsterdam, The Netherlands.
  • Hennekam RC; Amsterdam Neuroscience, Cellular and Molecular Mechanisms, Amsterdam, The Netherlands.
  • Boelen A; Amsterdam Gastroenterology, Endocrinology & Metabolism Research Institute, Amsterdam, The Netherlands.
J Mol Endocrinol ; 73(1)2024 Jul 01.
Article en En | MEDLINE | ID: mdl-38381448
ABSTRACT
Humans with the mutation Y509C in transducin beta like 1 X-linked (TBL1X HGNC ID HGNC11585) have been reported to present with the combination of central congenital hypothyroidism and impaired hearing. TBL1X belongs to the WD40 repeat-containing protein family, is part of NCoR and SMRT corepressor complexes, and thereby involved in thyroid hormone signaling. In order to investigate the effects of the Y509C mutation in TBL1X on cellular thyroid hormone action, we aimed to generate a hemizygous male mouse cohort carrying the Tbl1x Y459C mutation which is equivalent to the human TBL1X Y509C mutation using CRISPR/Cas9 technology. Hemizygous male mice were small at birth and inactive. Their life span (median life span 93 days) was very short compared with heterozygous female mice (survived to >200 days with no welfare issues). About 52% of mice did not survive to weaning (133 mice). Of the remaining 118 mice, only 8 were hemizygous males who were unable to mate whereby it was impossible to generate homozygous female mice. In conclusion, the Tbl1x Y459C mutation in male mice has a marked negative effect on birth weight, survival, and fertility of male mice. The present findings are unexpected as they are in contrast to the mild phenotype in human males carrying the equivalent TBL1X Y509C mutation.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Transducina / Longevidad / Mutación Límite: Animals / Female / Humans / Male Idioma: En Revista: J Mol Endocrinol Asunto de la revista: BIOLOGIA MOLECULAR / ENDOCRINOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Países Bajos Pais de publicación: Reino Unido

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Transducina / Longevidad / Mutación Límite: Animals / Female / Humans / Male Idioma: En Revista: J Mol Endocrinol Asunto de la revista: BIOLOGIA MOLECULAR / ENDOCRINOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Países Bajos Pais de publicación: Reino Unido