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saa1  (Proteintech)
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Proteintech saa1
( A ) Ligand-receptor analysis reveals keratinocyte- and neutrophil-specific interactions. Keratinocytes expressed <t>SAA1</t> transcripts and neutrophils expressed the FPR2 receptor (red dot, right-most column). ( B ) Dot plot demonstrating predominantly cell-specific expression of SAA1 and FPR2 transcripts. The dot size reflects the percentage of cells expressing the gene, and the color illustrates the level of gene expression. ( C ) Representative immunofluorescence staining images and quantification from 5 diseased and 5 control samples, confirming the expression of SAA1 and FPR2 in keratinocytes and neutrophils, respectively. Scale bars: 100 μm. ( D ) Dot plot comparing keratinocyte SAA1 and the control gene DEFB1 in different inflammatory skin conditions. The dot size reflects the percentage of cells expressing the gene, and the color illustrates the level of gene expression. ( E ) SAA1 secretion measured by ELISA in healthy neutrophils or healthy neutrophils exposed to keratinocytes. ( F ) Antibodies blocking SAA1 and FPR2 restored long-lived neutrophil lifespan to WT neutrophil levels. ( G ) Recombinant human SAA1 increased neutrophil survival at 72 hours ( n = 3 independent donors). Data indicate the mean ± SEM. * P < 0.05, ** P < 0.01, and *** P < 0.001, by 2-tailed, unpaired Student’s t test ( E and G ) and 1-way ANOVA with individual comparisons ( F ).
Saa1, supplied by Proteintech, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/saa1+2/pmc12520672-213-60-62?v=Proteintech
Average 93 stars, based on 1 article reviews
saa1 - by Bioz Stars, 2026-08
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( A ) Ligand-receptor analysis reveals keratinocyte- and neutrophil-specific interactions. Keratinocytes expressed SAA1 transcripts and neutrophils expressed the FPR2 receptor (red dot, right-most column). ( B ) Dot plot demonstrating predominantly cell-specific expression of SAA1 and FPR2 transcripts. The dot size reflects the percentage of cells expressing the gene, and the color illustrates the level of gene expression. ( C ) Representative immunofluorescence staining images and quantification from 5 diseased and 5 control samples, confirming the expression of SAA1 and FPR2 in keratinocytes and neutrophils, respectively. Scale bars: 100 μm. ( D ) Dot plot comparing keratinocyte SAA1 and the control gene DEFB1 in different inflammatory skin conditions. The dot size reflects the percentage of cells expressing the gene, and the color illustrates the level of gene expression. ( E ) SAA1 secretion measured by ELISA in healthy neutrophils or healthy neutrophils exposed to keratinocytes. ( F ) Antibodies blocking SAA1 and FPR2 restored long-lived neutrophil lifespan to WT neutrophil levels. ( G ) Recombinant human SAA1 increased neutrophil survival at 72 hours ( n = 3 independent donors). Data indicate the mean ± SEM. * P < 0.05, ** P < 0.01, and *** P < 0.001, by 2-tailed, unpaired Student’s t test ( E and G ) and 1-way ANOVA with individual comparisons ( F ).

Journal: The Journal of Clinical Investigation

Article Title: SAA1/FPR2 signaling between keratinocytes and neutrophils sustains chronic inflammation in Sweet syndrome

doi: 10.1172/JCI193566

Figure Lengend Snippet: ( A ) Ligand-receptor analysis reveals keratinocyte- and neutrophil-specific interactions. Keratinocytes expressed SAA1 transcripts and neutrophils expressed the FPR2 receptor (red dot, right-most column). ( B ) Dot plot demonstrating predominantly cell-specific expression of SAA1 and FPR2 transcripts. The dot size reflects the percentage of cells expressing the gene, and the color illustrates the level of gene expression. ( C ) Representative immunofluorescence staining images and quantification from 5 diseased and 5 control samples, confirming the expression of SAA1 and FPR2 in keratinocytes and neutrophils, respectively. Scale bars: 100 μm. ( D ) Dot plot comparing keratinocyte SAA1 and the control gene DEFB1 in different inflammatory skin conditions. The dot size reflects the percentage of cells expressing the gene, and the color illustrates the level of gene expression. ( E ) SAA1 secretion measured by ELISA in healthy neutrophils or healthy neutrophils exposed to keratinocytes. ( F ) Antibodies blocking SAA1 and FPR2 restored long-lived neutrophil lifespan to WT neutrophil levels. ( G ) Recombinant human SAA1 increased neutrophil survival at 72 hours ( n = 3 independent donors). Data indicate the mean ± SEM. * P < 0.05, ** P < 0.01, and *** P < 0.001, by 2-tailed, unpaired Student’s t test ( E and G ) and 1-way ANOVA with individual comparisons ( F ).

Article Snippet: For immunofluorescence microscopy, the following antibodies were used: CD3 (MCA1477, Bio-Rad), CD8 (170306S, Cell Signaling Technology), CD20 (14-0202-82, Thermo Fisher Scientific), CD68 (14-0688-82, Thermo Fisher Scientific), FCN1 (PA5-51552, Thermo Fisher Scientific), S100A8 (33254S, Cell Signaling Technology), S100A9 (34425S, Cell Signaling Technology), MHC-II (68258S, Cell Signaling Technology), IgG (66362S, Cell Signaling Technology), NE (AB68672, Abcam), ELANE (LS-B4244, LS-Bio), FPR2 (NLS1878, Novus), SAA1 (16721-1-AP, Proteintech), and MPO (sc-52707, Santa Cruz Biotechnology).

Techniques: Expressing, Gene Expression, Immunofluorescence, Staining, Control, Enzyme-linked Immunosorbent Assay, Blocking Assay, Recombinant