Journal: Cell reports. Medicine
Article Title: Replenishing decoy extracellular vesicles inhibits phenotype remodeling of tissue-resident cells in inflammation-driven arthritis.
doi: 10.1016/j.xcrm.2023.101228
Figure Lengend Snippet: Figure 2. Inflammatory stimulation promotes the release of IL6ST-bearing decoy EVs (A) EV quantification in blood and liver samples from DBA/1J (n = 3), K/BxN STA (n = 6), CIA (n = 6), or EAM mice (n = 3) using nanoparticle tracking analysis (NTA). (B and C) Protein lysates were collected from serum EVs from DBA/1J, K/BxN STA, CIA, and EAM mice. Representative western blot (B) and quantification analysis (C) of IL6ST are shown. b-tubulin was used as a loading control. n = 3 mice each group. (D) Representative transmission electron micrographs of serum EVs from indicated mouse models. Scale bars, 100 nm. (E) Total estimated number of IL6ST receptors per EV from serum of DBA/1J (n = 2), K/BxN STA (n = 6), CIA (n = 6), or EAM mice (n = 3) estimated based on obtained MFI values after fluorescence calibration of with Quantibrite polyethylene (PE) beads by flow cytometry. (F) Relative intensities of SEAP signal in HEK-Blue IL6 reporter cells induced by 10 ng/mL hyper IL6 and treated with 5 3 108 EV isolated from DBA/1J, K/BxN STA, CIA, or EAM mice. Data were normalized to HEK-Blue IL6 reporter cells treated with mock. Treatment with 200 ng/mL sgp130Fc was used as a positive control. n = 3 biological triplicates. Each dot represents the average value of three technical replicates. (G) Experimental design for EV transfer from K/BxN STA model mice to recipient CIA mice. (H and I) Clinical arthritis score over time (H) and at the endpoint (day 52) (I) in CIA mice treated with saline (n = 3), K/BxN STA mouse EVs (n = 5), or K/BxN STA mouse EVs preincubated with IL6ST mAb (n = 3) or IgG control (n = 3) recorded at the indicated time points. Each mouse was intravenously injected with 5 3 1010
Article Snippet: REAGENT or RESOURCE SOURCE IDENTIFIER Antibodies Rabbit anti-GAPDH Abcam Cat# ab9485; RRID: AB_307275 Rabbit anti-IL6ST Abcam Cat# ab283685 Rabbit anti-eGFP Bioss Cat# bs-2194R; RRID: AB_10881247 Rabbit anti-mCherry Bioss Cat# bs-41161R Rabbit anti-TIMP1 Bioss Cat# bs-0415R; RRID: AB_10856775 Rabbit anti-TIMP3 Abcam Cat# ab277794 Rabbit anti-ADAMTS4 Bioss Cat# bs-4191R; RRID: AB_11073215 Rabbit anti-ADAMTS5 Bioss Cat# bs-3573R; RRID: AB_10856276 Rabbit anti-RUNX2 Bioss Cat# bs-1134R; RRID: AB_10856062 Rabbit anti-MMP1 Bioss Cat# bs-0424R; RRID: AB_10858058 Rabbit anti-STAT3 Bioss Cat# bsm-52235R Rabbit anti-pSTAT3 Bioss Cat# bs-1658R;RRID: AB_10855117 Goat anti-rabbit IgG Bioss Cat# bs-0295G; RRID: AB_10856483 Rabbit anti-mIL6R Bioss Cat# bs-23660R Rabbit anti-MMP13 Bioss Cat# bs-10250R Rabbit anti-IL6ST BioLegend Cat# 149401; RRID: AB_2565294 Rabbit anti-mIL6R BioLegend Cat# 115803; RRID: AB_313674 Rabbit anti-IL1RII Abcam Cat# ab212208 Mouse anti-TNFR1 Abcam Cat# ab194814; RRID: AB_2889242 Goat anti-rabbit IgG H&L (Alexa Fluor 488) Abcam Cat# ab150077; RRID: AB_2630356 Goat anti-mouse IgG H&L (Alexa Fluor 488) Abcam Cat# ab150113; RRID: AB_2576208 Rabbit anti-CD81 Abcam Cat# ab109201; RRID: AB_10866464 Rabbit anti-CD9 Abcam Cat# ab307085 Rabbit anti-TSG101 Abcam Cat# ab125011; RRID: AB_10974262 Rabbit anti-HSP27 Abcam Cat# ab12351; RRID: AB_299035 Rabbit anti-b Tubulin Abcam Cat# ab6046; RRID: AB_2210370 Rabbit anti-TNFR1 Abcam Cat# ab223352 Rabbit anti-IL1RII Abcam Cat# ab273025 Biological samples Primary mouse chondrocytes C57BL/6 mice in this study N/A Mouse bone marrow macrophages C57BL/6 mice in this study N/A Chemicals, peptides, and recombinant proteins Collagenase D Roche Cat# roche.11088858001 Fetal bovine serum Hyclone Cat# SH30406.02 Recombinant mouse M-CSF R&D Systems Cat# 416-ML-050/CF Recombinant mouse RANKL R&D Systems Cat# 462-TR-010/CF Recombinant human TNFa R&D Systems Cat# 210-TA-020 Recombinant human IL1b Sigma-Aldrichs Cat# SRP3083 Recombinant human gp130Fc R&D Systems Cat# 671-GP-100 Recombinant mouse gp130Fc R&D Systems Cat# 468-MG-100 Recombinant mouse hyper IL6 R&D Systems Cat# 9038-SR-025 (Continued on next page) Cell Reports Medicine 4, 101228, October 17, 2023 e1
Techniques: Western Blot, Control, Transmission Assay, Cytometry, Isolation, Positive Control, Saline, Injection