Journal: iScience
Article Title: Detailed composition of wax esters in mouse sebum and the involvement of FAR2 and AWAT2
doi: 10.1016/j.isci.2026.114836
Figure Lengend Snippet: Impaired production of WEs containing very-long-chain FAls in Far2 KO mouse sebum (A) Conversion of non-hydroxy as well as α- or ω-OH acyl-CoAs to FAls or 1,α/1,ω-diols by FARs, and the metabolic pathways of these products. (B) Total RNAs were prepared from the skin of 8-week-old male C57BL/6 mice ( n = 3), and the expression levels of Far1 , Far2 , and the housekeeping gene Hprt1 were measured via quantitative real-time RT-PCR. Values presented are mean +SD of the mRNA levels relative to Hprt1 . (C and D) Photographs of a Far2 KO male mouse at 6 months of age showing partial hair loss (C) and at 9 months showing whitening hair (D), as well as WT male mice of the same age. (E) WT and Far2 KO male mice ( n = 3 each) were housed in the same cage for 2 weeks, after which mice of different genotypes were transferred to separate cages. Lipids were extracted from the hair of the mice 0 and 2 weeks (w) after they were separated, and the WmE with C18:1 FA/C26:0 FAl was quantified via LC-MS/MS. Values presented are mean quantities +SD (∗ p < 0.05; ∗∗ p < 0.01; Tukey’s test). (F–K) WT and Far2 KO male mice ( n = 3 each) at 5 weeks of age were transferred to separate cages and housed separately for 3 weeks. Lipids were extracted from the hair, and WmEs (F and G), 2α-WdiEs (H), 2ω-WdiEs (I), Chol-OAHFAs (J), and Chol-Es (K) were analyzed via LC-MS/MS. (F and G) Values are the quantities of WmEs containing C16:0 FA and the indicated FAl moieties (F) and those containing the indicated FA and long-chain (LC) or very-long-chain (VLC) FAl moieties (G). Values shown are means +SD (∗ p < 0.05; ∗∗ p < 0.01; Welch’s t test). The simplified structures of the WmEs with the analyzed moieties (FAl and/or FA) are shown. (H and I) Values are the quantities of 2α-WdiEs (H) and 2ω-WdiEs (I), both containing the indicated FA moieties. Values presented are mean quantities +SD (∗ p < 0.05; ∗∗ p < 0.01; Welch’s t test). The simplified structures of the 2α-WdiE (H) and 2ω-WdiE (I) with the analyzed FA moieties are shown. (J and K) Values are the means +SD of the total quantities of Chol-OAHFAs (J) and Chol-Es (K).
Article Snippet: C16:0 Cholesteryl- d 7 ester , Avanti Research , Cat#700149.
Techniques: Expressing, Quantitative RT-PCR, Liquid Chromatography with Mass Spectroscopy