Journal: Materials Today Bio

Article Title: Photocrosslinkable lung dECM hydrogels promote stiffness-dependent lung cancer growth and chemoresistance

doi: 10.1016/j.mtbio.2026.102838

Figure Lengend Snippet: NSCLC growth is dependent on matrix type and stiffness. (A) Viability staining of encapsulated A549 cells using fluorescein diacetate (FDA, green, live) and propidium iodide (PI, red, dead). Day 1 scale = 200 μm, day 7 and 14 scales = 500 200 μm. (B) Representative fluorescent images of A549-laden cultures fixed on days 3, 7, and 14 and stained with DAPI (blue, nuclei) and phalloidin (red, actin) to observe cell morphology and distribution over time. Scale = 250 μm, inset scale = 100 μm. (C) Cell viability of A549s within matrices measured through live-dead quantification of FDA or PI stained live (green) and dead (red) cells over time via ImageJ analysis. N = 1. n = 3. (D) Metabolic activity of A549 cells within matrices was determined by PrestoBlue metabolic assay. N = 1. n = 6. (E) DNA content of A549 cells within matrices was determined by PicoGreen™ DNA quantification. N = 1. n = 6. (F) Number of nuclei per ROI was determined via Image J analysis of DAPI-stained cells within ROIs captured using an Evident FV4000 confocal microscope at 10× magnification. N = 2. n = 4–8 ROIs were captured per condition per timepoint. (G) Area of actin per ROI (μm 2 ) was determined through ImageJ analysis of phalloidin-stained cell actin fibers. N = 2. n = 4–8. All data is represented as mean ± SD.

Article Snippet: 1 × 10 6 A549 cells (ATCC) were seeded at P90 in T75 culture flasks and cultured using 10 mL complete A549 media (Dulbecco's modified eagle medium (DMEM) + 10 % FCS + 1 % pen/strep) in a tissue culture incubator at 37 °C.

Techniques: Staining, Activity Assay, Metabolic Assay, Microscopy

Journal: Journal of Translational Autoimmunity

Article Title: T cell proliferative response to a homocitrullinated peptide correlates with joint pathology in collagen induced arthritis

doi: 10.1016/j.jtauto.2025.100345

Figure Lengend Snippet: Citrullinated and Homocitrullinated Proteins/Peptides are Present in DBA/1J Metatarsophalangeal Joints. A) Representative hematoxylin + eosin (H&E) at 80× magnification and immunofluorescent micrographs at 20× magnification of joints from DBA/1J mice immunized with bovine type II collagen (arthritic: N = 9; non-arthritic: N = 10) or PBS (N = 9). Scale bars represent 500 μm. Max projections of Z-stacks show nuclei (DAPI; blue), citrullinated proteins/peptides (CitP; green), and homocitrullinated proteins/peptides (HomoCitP; red). Corrected total fluorescence intensity for B) CitP and C) HomoCitP in three joint structures: bone marrow, synovium, and cartilage. Graphs show the median [IQR], with each symbol representing an individual mouse. Statistical analysis was performed using Kruskal-Wallis with Dunn's multiple comparisons test, and the resulting p-values were p = 0.0046, p = 0.0084, p = 0.4076, p = 0.0143, p = 0.0136, and p = 0.1733 respectively, with p-values for pairwise comparisons indicated on the graphs. ns: not significant.

Article Snippet: Following application of TrueView autofluorescence quencher, slides were mounted using Vectashield Vibrance Antifade mounting media with DAPI (SP-8500-15; Vector Laboratories; USA) and air dried for 2 h before imaging on the Nikon Ti2-E microscope.

Techniques: Fluorescence