Journal: bioRxiv
Article Title: Phosphoproteomics of CD2 signaling reveals an AMPK-dependent regulation of lytic granule polarization in cytotoxic T cells
doi: 10.1101/795963
Figure Lengend Snippet: (A) Colocalization analysis and (B) immunofluorescence image of LAMP1 and AMPK signals in CTLs. Quantitative measurements were taken for 30 CTLs (n=3 donors). (C) Immunofluorescence images of CTLs electroporated with LAMP1-AIP-mCherry or Tom20-AIP-mCherry constructs and stained with antibodies against perforin (granules). (D) Quantitative analysis of lytic granule polarization in antibody-stimulated mCherry-positive CTLs overexpressing either LAMP1-AIP-mCherry or Tom20-AIP-mCherry (n=3 experiments). (E) Colocalization analysis of immunofluorescence signals in CTLs stained with antibodies against AMPK and perforin (granules) (n=3 experiments). (F) Immunofluorescence image of a CTL stained with antibodies against AMPK, LAMP1 and perforin (granules). (G) CLEM analysis of lytic granules and AMPK-positive compartment in freshly isolated CTLs. N, nucleus; LD, lipid droplet; AMPK, AMPK-positive vesicle; LG, lytic granule. Scale bar, 5 μm. Shown are mean values ± SD; ns, not significant; two-way ANOVA test ****p < 0.0001.
Article Snippet: For overexpression of LAMP1-AIP and Tom20-AIP, CTLs were nucleofected with 2 μg of purified LAMP-mChF-AIP and Tom20-mChF-AIP plasmids (a gift from Takanari Inoue, Addgene plasmids # 61524 and # 61512).
Techniques: Immunofluorescence, Construct, Staining, Isolation