Although the development of improved mouse models, including conditional deletions, marks an exciting time in mouse genetics, it is important to characterize and validate these models. Cre reporter strains allow researchers to assess the recombinase expression profile and function in individual Cre mouse lines. These strains are engineered to express a reporter gene (usually LacZ) following the removal of a floxed STOP cassette, thus marking cell lineages that can be targeted with a given Cre line. This protocol provides a detailed method for the histochemical detection of β-galactosidase activity in Cre mouse strains.
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http://dx.doi.org/10.1101/pdb.prot073452 | DOI Listing |
Nat Commun
January 2025
Division of Endocrinology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
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 line which is widely used for brown fat research. Hemizygotes exhibit major brown and white fat transcriptomic dysregulation, indicating potential altered tissue function.
View Article and Find Full Text PDFJ Immunother Cancer
January 2025
Internal Medicine I, Ulm University Hospital, Ulm, Germany
Background: Pancreatic ductal adenocarcinoma (PDAC) is mostly refractory to immunotherapy due to immunosuppression in the tumor microenvironment and cancer cell-intrinsic T cell tolerance mechanisms. PDAC is described as a "cold" tumor type with poor infiltration by T cells and factors leading to intratumoral T cell suppression have thus received less attention. Here, we identify a cancer cell-intrinsic mechanism that contributes to a T cell-resistant phenotype and describes potential combinatorial therapy.
View Article and Find Full Text PDFFood Chem
January 2025
Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China. Electronic address:
Paederia scandens (Lour.) Merrill flavonoid-rich extract (PSMF) has shown excellent xanthine oxidase (XOD) inhibitory activity in our previous study. However, the efficacy of PSMF in mitigating hyperuricemia (HUA) remains to be elucidated.
View Article and Find Full Text PDFPLoS Genet
January 2025
Department of Pediatric and Adolescent Medicine, Mayo Clinic, 200 1st St. SW, Rochester, Minnesota 55905, United States of America.
Motor neuron diseases, such as amyotrophic lateral sclerosis (ALS) and progressive bulbar palsy, involve loss of muscle control resulting from death of motor neurons. Although the exact pathogenesis of these syndromes remains elusive, many are caused by genetically inherited mutations. Thus, it is valuable to identify additional genes that can impact motor neuron survival and function.
View Article and Find Full Text PDFEndocrinology
January 2025
Reproduction, Mother and Child Health, Centre de recherche du centre hospitalier universitaire de Québec - Université Laval, Québec City, Québec, Canada, G1V 4G2.
Leydig cells produce hormones that are required for male development, fertility, and health. Two Leydig cell populations produce these hormones but at different times during development: fetal Leydig cells which are active during fetal life and adult Leydig cells that are functional postnatally. Historically, our ability to understand the origin and function of Leydig cells has been made difficult by the lack of genetic models to exclusively target these cells.
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