Journal: Advanced science (Weinheim, Baden-Wurttemberg, Germany)

Article Title: Bone Marrow Mesenchymal Stem Cell-Derived Dermcidin-Containing Migrasomes enhance LC3-Associated Phagocytosis of Pulmonary Macrophages and Protect against Post-Stroke Pneumonia.

doi: 10.1002/advs.202206432

Figure Lengend Snippet: Figure 7. DCD is beneficial to AIS recovery and DCD-containing BM-MSC-derived migrasome effectively promotes phagocytosis of macrophages. A– G) Peripheral blood of AIS patients (acute phase, 0–3d after disease onset, n = 16) and healthy controls (HC, n = 8) were collected. (A) Plasma DCD concentration was assessed with ELISA. *p < 0.05, compared with HC by Student’s t-test (mean ± standard deviation). (B) Correlation of clinic parameters and plasma DCD concentration was assessed with Spearman correlation analysis and Point-biserial correlations. *p < 0.05. DM, diabetes mellitus, CHD, coronary heart disease. (C) Representative images of the magnetic resonance diffusion weighted imaging (MR-DWI) of AIS patients with low plasma DCD concentration (DCD ≤3.33 ng ml−1) or high plasma DCD concentration (DCD > 3.33 ng ml−1). (D) Association between plasma DCD concentration with infarct scale was estimated with Spearman correlation analysis. (E) Association between plasma DCD concentration with delta NIHSS (NIHSS at 7d minus NIHSS at 1d) was estimated with Spearman correlation analysis. (F) Representative images of the chest Computed Tomography (CT) of AIS patients with low plasma DCD concentration (DCD ≤3.39 ng ml−1, median of the cohort) or high plasma DCD concentration (DCD > 3.39 ng ml−1, median of the cohort). (G) Pie charts showing the occurrence of post-stroke pneumonia in AIS patients with low and high plasma DCD concentrations. H) DCD (1 ng ml−1), PBS-migrasomes (PBS-M, 50 μg ml−1) or E. Coli-migrasomes (E. Coli-M, 50 μg ml−1) labeled with Dil (red) were treated to BMDM (15 min). Immunostaining of WGA (green) and DCD (withe) in migrasome-treated BMDM was performed. Experiments were repeated for three times. I,J) BMDM were first pre-stimulated with DCD (1 ng ml−1), PBS-M (50 μg ml−1), or E. Coli-M (50 μg ml−1) for overnight then treated with E. Coli (E. Coli : BMDM = 20:1, 1 h). Phagocytic efficiency of BMDM to GFP expressing E. Coli was assessed with flow cytometry (I) and immunostaining (J). Experiments were repeated three times. **p < 0.01, compared with PBS-treated group by one-way ANOVA (mean ± standard deviation).

Article Snippet: Human Monocyte Enrichment and Macrophage Differentiation: Mononucleus cells were isolated from peripheral blood of healthy adults (age = 18–40y) with human peripheral blood monocyte isolation Solution kit (Solarbio, P8680).

Techniques: Derivative Assay, Clinical Proteomics, Concentration Assay, Enzyme-linked Immunosorbent Assay, Standard Deviation, Imaging, Computed Tomography, Labeling, Immunostaining, Expressing, Cytometry