igf2  (R&D Systems)

Journal: Science Advances

Article Title: An engineered insulin analog with dual insulin and IGF-1 receptor agonism and distinct signaling

doi: 10.1126/sciadv.aeb7558

Figure Lengend Snippet: Cells were stimulated with 10 nM ligands for 20 min; phosphorylation of IR/IGF-1R was assessed by Western blot. Data were normalized to GAPDH (glyceraldehyde-3-phosphate dehydrogenase) loading control and are shown relative to IGF-1–induced signal. The GAPDH loading control is the same as in because the respective samples were analyzed on the same gel. We show a representative blot, and all blots are in the Supplementary Materials. Bars: control (white), insulin analogs (light red), IGF-1 analogs (light blue), and IGF-2 analogs (light yellow). Asterisks indicate significant differences from IGF-1 (* P < 0.05; *** P < 0.001; # < 0.0001; ns, not significant according to ANOVA).

Article Snippet: Human insulin was a gift from F. Hubálek (Novo Nordisk A/S), human IGF-1 was provided by Tercica Inc., and human IGF-2 was purchased from GroPep Bioreagents.

Techniques: Phospho-proteomics, Western Blot, Control

Journal: Investigative Ophthalmology & Visual Science

Article Title: Rexinoid NEt-3IB Promotes Resident Macrophage Gene Expression and Mitigates Desiccation-Induced Ocular Surface Disease

doi: 10.1167/iovs.67.4.31

Figure Lengend Snippet: Effects of rexinoid treatment on macrophage gene and protein expression in the desiccation stress dry eye model and potential macrophage-derived IGF-1/IGF-1R signaling axis. ( A ) Heatmaps showing z -score–scaled expression of selected latent-time–associated genes in four treatment groups (NS, None [untreated], Veh, and NEt-3IB) in conjunctival monocyte/macrophage lineage cells sorted from CD45⁺ cells after 5 days of desiccating stress (DS5) ( P adj < 0.001). Genes are organized into five functional categories. The color scale represents z -scores of normalized expression ( blue , low; red , high). These data show desiccating stress–associated shifts in macrophage gene programs and their modulation by NEt-3IB, including enrichment of reparative and growth factor–related genes such as Igf1 . Full gene names for the abbreviations are provided in . ( B ) Representative flow cytometry histograms and quantification validating selected macrophage-associated markers in conjunctival immune cells. ( Left ) Representative histograms of CX3CR1 staining with fluorescence-minus-one (FMO) control, with corresponding quantification of the percentage of CD45⁺CD11b⁺CX3CR1⁺ cells. ( Right ) Representative histograms of IGF-1 staining with FMO control, with corresponding quantification of the percentage of CD45⁺CD11b⁺Mrc1⁺IGF-1⁺ cells. Compared with DS5 no treatment and DS5+vehicle controls, DS5+NEt-3IB increased the proportion ofx CX3CR1⁺ and Mrc1⁺IGF-1⁺ myeloid cells. Each dot represents one biological replicate; bars show mean ± SEM. Statistical significance is indicated as shown: ** P < 0.01; **** P < 0.001; **** P < 0.0001; ns, not significant. ( C ) Representative immunofluorescence images showing IGF-1R/WGA/DAPI staining of wholemount conjunctiva showing surface view ( top ) and βIII-tubulin/IGF-1R/DAPI staining in the cornea ( bottom ). IGF-1R localization is shown because IGF-1 is produced by ocular surface resident macrophages, suggesting a potential macrophage-derived IGF-1/IGF-1R signaling axis acting on ocular surface epithelial and neural compartments during DS. Scale bar : 100 µm.

Article Snippet: The following primary antibodies were used: βIII-tubulin (ab215037; Abcam, Cambridge, UK) and human/mouse IGF-1R (AF-305-NA; R&D Systems, Minneapolis, MN, USA).

Techniques: Expressing, Derivative Assay, Functional Assay, Flow Cytometry, Staining, Fluorescence, Control, Immunofluorescence, Produced