PMID- 37258752 OWN - NLM STAT- MEDLINE DCOM- 20230602 LR - 20230608 IS - 1940-6029 (Electronic) IS - 1064-3745 (Linking) VI - 2675 DP - 2023 TI - In Vivo Hepatic Triglyceride Secretion Rate in Antisense Oligonucleotide (ASO)-Treated Mice. PG - 15-26 LID - 10.1007/978-1-0716-3247-5_2 [doi] AB - The liver is a central organ in regulating the whole body metabolic homeostasis, and, among many other processes, it plays a crucial role in lipoprotein metabolism. The liver controls the secretion of very-low-density lipoproteins (VLDLs), particles specialized in the transport of liver lipids, mainly triglycerides (TGs), to the adipose tissue, heart, and muscle, among other tissues, providing fatty acids to be stored or to be used as an energy source. The analysis of this metabolic process provides relevant information about the crosstalk between the liver and other organs. It also helps to identify how the liver is able to secrete lipids to reduce its accumulation. This protocol shows how to analyze the liver TG secretion rate blocking the VLDL clearance from the blood by the administration of poloxamer 407. In addition, it shows how to isolate the VLDL produced by the liver at the end of the experiment, so that the apolipoprotein and lipid content and size can be measured. Using antisense oligonucleotides (ASOs) for silencing target proteins involved in metabolic diseases has emerged as a new promising therapeutic approach. Thus, the usage of ASOs has also been included in this protocol. As a conclusion, evaluation of TG secretion rate in mice provides key information to understand the organ crosstalk in metabolic diseases and the capacity of the liver to secrete lipids to blood. CI - (c) 2023. The Author(s), under exclusive license to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Gomez-Santos, Beatriz AU - Gomez-Santos B AD - Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain. FAU - Saenz de Urturi, Diego AU - Saenz de Urturi D AD - Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain. FAU - Buque, Xabier AU - Buque X AD - Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain. FAU - Aurrekoetxea, Igor AU - Aurrekoetxea I AD - Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain. AD - Biocruces Bizkaia Health Research Institute, Barakaldo, Spain. FAU - Nieva, Ane AU - Nieva A AD - Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain. FAU - Fernandez-Puertas, Idoia AU - Fernandez-Puertas I AD - Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain. FAU - Aspichueta, Patricia AU - Aspichueta P AD - Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain. patricia.aspichueta@ehu.eus. AD - Biocruces Bizkaia Health Research Institute, Barakaldo, Spain. patricia.aspichueta@ehu.eus. AD - National Institute for the Study of Liver and Gastrointestinal Diseases (CIBERehd, Instituto de Salud Carlos III), Madrid, Spain. patricia.aspichueta@ehu.eus. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Methods Mol Biol JT - Methods in molecular biology (Clifton, N.J.) JID - 9214969 RN - 0 (Triglycerides) RN - 0 (Oligonucleotides, Antisense) RN - 0 (Lipoproteins, VLDL) SB - IM MH - Mice MH - Animals MH - Triglycerides/metabolism MH - *Fatty Liver/metabolism MH - Oligonucleotides, Antisense/genetics/metabolism MH - Liver/metabolism MH - Lipoproteins, VLDL/metabolism OTO - NOTNLM OT - Lipid OT - Lipoprotein OT - Liver OT - Metabolism OT - Oligonucleotides OT - Triglycerides EDAT- 2023/06/01 01:08 MHDA- 2023/06/02 06:42 CRDT- 2023/05/31 23:28 PHST- 2023/06/02 06:42 [medline] PHST- 2023/06/01 01:08 [pubmed] PHST- 2023/05/31 23:28 [entrez] AID - 10.1007/978-1-0716-3247-5_2 [doi] PST - ppublish SO - Methods Mol Biol. 2023;2675:15-26. doi: 10.1007/978-1-0716-3247-5_2.