The widely used Ucp1-Cre transgene elicits complex developmental and metabolic phenotypes

Abstract Bacterial artificial chromosome transgenic models, including most Cre-recombinases, enable potent interrogation of gene function in vivo but require rigorous validation as limitations emerge. Due to its high relevance to metabolic studies, we perform comprehensive analysis of the Ucp1-Cre E...

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Main Authors: Manasi Suchit Halurkar, Oto Inoue, Archana Singh, Rajib Mukherjee, Meghana Ginugu, Christopher Ahn, Christian Louis Bonatto Paese, Molly Duszynski, Samantha A. Brugmann, Hee-Woong Lim, Joan Sanchez-Gurmaches
Format: Article
Language:English
Published: Nature Portfolio 2025-01-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-024-54763-4
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author Manasi Suchit Halurkar
Oto Inoue
Archana Singh
Rajib Mukherjee
Meghana Ginugu
Christopher Ahn
Christian Louis Bonatto Paese
Molly Duszynski
Samantha A. Brugmann
Hee-Woong Lim
Joan Sanchez-Gurmaches
author_facet Manasi Suchit Halurkar
Oto Inoue
Archana Singh
Rajib Mukherjee
Meghana Ginugu
Christopher Ahn
Christian Louis Bonatto Paese
Molly Duszynski
Samantha A. Brugmann
Hee-Woong Lim
Joan Sanchez-Gurmaches
author_sort Manasi Suchit Halurkar
collection DOAJ
description Abstract Bacterial artificial chromosome transgenic models, including most Cre-recombinases, enable potent interrogation of gene function in vivo but require rigorous validation as limitations emerge. Due to its high relevance to metabolic studies, we perform comprehensive analysis of the Ucp1-Cre Evdr line which is widely used for brown fat research. Hemizygotes exhibit major brown and white fat transcriptomic dysregulation, indicating potential altered tissue function. Ucp1-Cre Evdr homozygotes also show high mortality, tissue specific growth defects, and craniofacial abnormalities. Mapping the transgene insertion site reveals insertion in chromosome 1 accompanied by large genomic alterations disrupting several genes expressed in a range of tissues. Notably, Ucp1-Cre Evdr transgene retains an extra Ucp1 gene copy that may be highly expressed under high thermogenic burden. Our multi-faceted analysis highlights a complex phenotype arising from the presence of the Ucp1-Cre Evdr transgene independently of intended genetic manipulations. Overall, comprehensive validation of transgenic mice is imperative to maximize discovery while mitigating unexpected, off-target effects.
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spelling doaj-art-f3ddb238cc3344feadcfe3711a22da8d2025-01-19T12:31:05ZengNature PortfolioNature Communications2041-17232025-01-0116111610.1038/s41467-024-54763-4The widely used Ucp1-Cre transgene elicits complex developmental and metabolic phenotypesManasi Suchit Halurkar0Oto Inoue1Archana Singh2Rajib Mukherjee3Meghana Ginugu4Christopher Ahn5Christian Louis Bonatto Paese6Molly Duszynski7Samantha A. Brugmann8Hee-Woong Lim9Joan Sanchez-Gurmaches10Division of Endocrinology, Cincinnati Children’s Hospital Medical CenterDivision of Endocrinology, Cincinnati Children’s Hospital Medical CenterDivision of Endocrinology, Cincinnati Children’s Hospital Medical CenterDivision of Endocrinology, Cincinnati Children’s Hospital Medical CenterDivision of Endocrinology, Cincinnati Children’s Hospital Medical CenterDivision of Biomedical Informatics, Cincinnati Children’s Hospital Medical CenterDivision of Developmental Biology, Cincinnati Children’s Hospital Medical CenterDivision of Molecular Cardiovascular Biology, Cincinnati Children’s Hospital Medical CenterDivision of Developmental Biology, Cincinnati Children’s Hospital Medical CenterDivision of Biomedical Informatics, Cincinnati Children’s Hospital Medical CenterDivision of Endocrinology, Cincinnati Children’s Hospital Medical CenterAbstract Bacterial artificial chromosome transgenic models, including most Cre-recombinases, enable potent interrogation of gene function in vivo but require rigorous validation as limitations emerge. Due to its high relevance to metabolic studies, we perform comprehensive analysis of the Ucp1-Cre Evdr line which is widely used for brown fat research. Hemizygotes exhibit major brown and white fat transcriptomic dysregulation, indicating potential altered tissue function. Ucp1-Cre Evdr homozygotes also show high mortality, tissue specific growth defects, and craniofacial abnormalities. Mapping the transgene insertion site reveals insertion in chromosome 1 accompanied by large genomic alterations disrupting several genes expressed in a range of tissues. Notably, Ucp1-Cre Evdr transgene retains an extra Ucp1 gene copy that may be highly expressed under high thermogenic burden. Our multi-faceted analysis highlights a complex phenotype arising from the presence of the Ucp1-Cre Evdr transgene independently of intended genetic manipulations. Overall, comprehensive validation of transgenic mice is imperative to maximize discovery while mitigating unexpected, off-target effects.https://doi.org/10.1038/s41467-024-54763-4
spellingShingle Manasi Suchit Halurkar
Oto Inoue
Archana Singh
Rajib Mukherjee
Meghana Ginugu
Christopher Ahn
Christian Louis Bonatto Paese
Molly Duszynski
Samantha A. Brugmann
Hee-Woong Lim
Joan Sanchez-Gurmaches
The widely used Ucp1-Cre transgene elicits complex developmental and metabolic phenotypes
Nature Communications
title The widely used Ucp1-Cre transgene elicits complex developmental and metabolic phenotypes
title_full The widely used Ucp1-Cre transgene elicits complex developmental and metabolic phenotypes
title_fullStr The widely used Ucp1-Cre transgene elicits complex developmental and metabolic phenotypes
title_full_unstemmed The widely used Ucp1-Cre transgene elicits complex developmental and metabolic phenotypes
title_short The widely used Ucp1-Cre transgene elicits complex developmental and metabolic phenotypes
title_sort widely used ucp1 cre transgene elicits complex developmental and metabolic phenotypes
url https://doi.org/10.1038/s41467-024-54763-4
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