Journal: Journal of Lipid Research
Article Title: Aggressive cholesterol lowering normalizes atherosclerosis regression in Jak2 V617F mice
doi: 10.1016/j.jlr.2026.101003
Figure Lengend Snippet: Cholesterol lowering suppresses Jak2 VF macrophage proliferation and DNA damage. A: Study design created with BioRender.com. B: Plasma cholesterol (n = 79, 78, and 78 for Baseline mice for weeks 3, 11, and 15, respectively; n = 13, 14 for Ctrl Progression mice, n = 16, 16 for Ctrl LDL Lowering mice, n = 15, 15 for Jak2 VF Progression mice, n = 16, 16 for Jak2 VF LDL Lowering mice, for weeks 18 and 23, respectively). C: Images of aortic root lesions for MAC2 ( Green ), Cleaved GasD ( Red ), and DAPI ( Blue ). Scale bar, 60 μm. D: Log 10 transformed cleaved GasD mean fluorescence intensity (MFI) in lesions with the addition of constant 1, n = 14–16. P = 0.01 (Baseline vs. Jak2 VF Progression), P = 0.051 ( Jak2 VF Progression vs. Jak2 VF LDL Lowering). E: Log 10 transformed cleaved GasD MFI in the necrotic core with the addition of constant 1, n = 14–16. P = 0.04 (Baseline vs. Jak2 VF Progression), P = 0.013 ( Jak2 VF Progression vs. Jak2 VF LDL Lowering). F: Images of aortic root lesions stained for MAC2 ( Green ), Cleaved GasD ( Red ), and DAPI ( Blue ). Scale bar, 60 μm. White arrows , cleaved GasD + macrophages. G: Log 10 transformed cleaved GasD positive macrophages per section with the addition of constant 1, n = 14–16. H: Images of aortic root lesions for MAC2 ( Red ), Ki67 ( White ), and ZsGreen ( Green ). Scale bar, 60 μm. White arrows , macrophages double positive for Ki67 and ZsGreen. I: Macrophages positive for both Ki67 and ZsGreen per section, n = 13–15. P = 0.0019 (Baseline vs. Jak2 VF Progression), P = 0.0006 (Ctrl Progression vs. Jak2 VF Progression), P = 0.0003 ( Jak2 VF Progression vs. Jak2 VF LDL Lowering). J: Macrophages positive for Ki67 but negative for ZsGreen per section, n = 13–16. K: Images of aortic root lesions stained for pγH2AX ( Red ), ZsGreen ( Green ), and DAPI ( Blue ). Scale bar, 60 μm. White arrows, pγH2AX positive cells. L: Log 10 transformed cells double positive for pγH2AX and ZsGreen in lesions with the addition of constant 1, n = 13–16. P = 0.0024 (Baseline vs. Jak2 VF Progression), P = 0.0019 ( Jak2 VF Progression vs. Jak2 VF LDL Lowering). M: Log 10 transformed cells positive for pγH2AX but negative for ZsGreen in lesions with the addition of constant 1, n = 13–16. All quantifications shown as mean ± s.e.m. One-way ANOVA with Holm–Sidak’s multiple comparisons test (D and E). Kruskal–Wallis test with Dunn’s multiple comparison’s test (G, I, J, L, and M). DAPI, 4′,6-diamidino-2-phenylindole; GasD, gasdermin D; LDL, low-density lipoprotein; pγH2AX, phosphorylated histone H2A.X.
Article Snippet: Following blocking, sections were incubated with the following primary antibodies at the indicated concentrations overnight at 4 °C in a humidified chamber: Absent in melanoma 2 (AIM2) (Abcam, ab119791, 1:250), Cleaved GasD (Cell Signaling, 10137, 10 μg/ml), c-Myc (Cell Signaling, 5605, 5.76 μg/ml), Ki67 (Abcam, ab15580, 9 μg/ml), MAC2 (Cedarlane, CL8942AP 1 μg/ml), MAC2 conjugated to Alexa Fluor 488 (Cedarlane, CL8942AF4, 1 μg/ml), mer proto-oncogene tyrosine kinase (MerTK) (R&D, BAF591, 2 μg/ml), pγH2AX (Cell Signaling, 9718, 0.74 μg/ml), ZsGreen (Thermo Fisher Scientific, TA180002, 10 μg/ml), triggering receptor expressed on myeloid cells 2 (TREM2) (Denali, 4D9 DC1847, 1:100).
Techniques: Clinical Proteomics, Transformation Assay, Fluorescence, Staining