title: Global deletion of lipocalin 2 does not reverse high-fat diet-induced obesity resistance in stearoyl-CoA desaturase-1 skin-specific knockout mice.
abstract: Over the past century, obesity has developed into a paramount health issue that affects millions of people worldwide. Obese individuals have an increased risk to develop other metabolic disorders, such as insulin resistance and atherosclerosis, among others. Previously we determined that mice lacking stearoyl-CoA desaturase-1 (SCD1) enzyme specifically in the skin (SKO) were lean and protected from high-fat diet induced adiposity. Additionally, lipocalin 2 (Lcn2) mRNA was found to be 27-fold higher in the skin of SKO mice compared to control mice. Given reports suggesting that Lcn2 plays a role in protection against diet-induced weight gain, adiposity and insulin resistance, we hypothesized that deletion of Lcn2 alongside the skin-specific SCD1 deficiency would diminish the obesity resistance observed in SKO mice. To test this, we developed mice lacking SCD1 expression in the skin and also lacking Lcn2 expression globally and surprisingly, these mice did not gain significantly more weight than the SKO mice under high-fat diet conditions. Therefore, we conclude that Lcn2 does not mediate the protection against high-fat diet-induced adiposity observed in SKO mice.
authors.affiliation: Department of Biochemistry, University of Wisconsin-Madison, 433 Babcock Drive, Madison, WI 53706, United States.
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Friedlander
authors.affiliation: Department of Nutritional Sciences, University of Wisconsin-Madison, 433 Babcock Drive, Madison, WI 53706, United States.
authors.forename: Maggie S
authors.initials: MS
authors.lastname: Burhans
authors.affiliation: Department of Biochemistry, University of Wisconsin-Madison, 433 Babcock Drive, Madison, WI 53706, United States.
authors.forename: Lacmbouh
authors.initials: L
authors.lastname: Ade
authors.affiliation: Department of Biochemistry, University of Wisconsin-Madison, 433 Babcock Drive, Madison, WI 53706, United States.
authors.forename: Lucas M
authors.initials: LM
authors.lastname: O'Neill
authors.affiliation: Department of Food Science and Nutrition, University of Minnesota-Twin Cities, St. Paul, MN 55108, United States.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Biochemistry, University of Wisconsin-Madison, 433 Babcock Drive, Madison, WI 53706, United States; Department of Nutritional Sciences, University of Wisconsin-Madison, 433 Babcock Drive, Madison, WI 53706, United States. Electronic address: ntambi@biochem.wisc.edu.
authors.forename: James M
authors.initials: JM
authors.lastname: Ntambi
mesh_terms: D000209:Acute-Phase Proteins / Q000235:genetics* / Q000378:metabolism; D000818:Animals; D059305:Diet, High-Fat; D005260:Female; D017353:Gene Deletion; D005951:Glucose Tolerance Test; D000071068:Lipocalin-2; D054834:Lipocalins / Q000235:genetics* / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D008297:Male; D051379:Mice; D018345:Mice, Knockout; D009765:Obesity / Q000201:enzymology / Q000235:genetics* / Q000378:metabolism; D015513:Oncogene Proteins / Q000235:genetics* / Q000378:metabolism; D012867:Skin / Q000201:enzymology* / Q000378:metabolism; D013230:Stearoyl-CoA Desaturase / Q000235:genetics* / Q000378:metabolism; D014280:Triglycerides / Q000032:analysis / Q000378:metabolism
chemical_list: D000209:Acute-Phase Proteins; D000071068:Lipocalin-2; D054834:Lipocalins; D015513:Oncogene Proteins; D014280:Triglycerides; C071332:Lcn2 protein, mouse; D013230:Stearoyl-CoA Desaturase
keywords: Lipocalin 2; Metabolism; Obesity; Stearoyl-CoA desaturase