Journal: Journal of the American Heart Association
Article Title: Laminin‐221 Enhances Therapeutic Effects of Human‐Induced Pluripotent Stem Cell–Derived 3‐Dimensional Engineered Cardiac Tissue Transplantation in a Rat Ischemic Cardiomyopathy Model
doi: 10.1161/jaha.119.015841
Figure Lengend Snippet: Figure 3. Laminin -221 improves tolerance to hypoxia of human-induced pluripotent stem cell-derived cardiomyocytes (hiPS-CMs). A, Immunostaining images of phosphorylated focal adhesion kinase (FAK) (pFAK; Tyr397) (red), laminin-2 (green), and nuclei (blue). Bar=50 µm. B, Western blotting analysis revealed enhancement of expression of pFAK (n=6). C, Quantitative polymerase chain reaction analysis of antiapoptosis-related gene expression in hiPS-CMs under hypoxic conditions: BCL2 (B-cell leukemia/lymphoma 2) and BCL2L1 (Bcl-2–like protein 1) (n=4). D, Western blotting analysis of downstream signaling related protein of FAK: STAT3 (signal transducer and activator of transcription 3) and phosphorylated STAT3 (pSTAT3; pS727-STAT3) (n=6). E and F, FAK inhibitor 14 causes reductions of tolerance to hypoxia of hiPS-CMs: lactate dehydrogenase production (n=7; E) and cell viability (n=10; F). The horizontal line in the middle of each box indicates the median; the top and bottom borders of the box mark the 75th and 25th percentiles, respectively; and the whiskers mark the 90th and 10th percentiles. DAPI indicates 4’,6-diamidino-2-phenylindole; and n.s., not significant.
Article Snippet: Primary antibodies against focal adhesion kinase (FAK) (1:1000, catalog No. 13009), phosphorylated FAK (Tyr397) (1:1000, catalog No. 8556), GAPDH (1:1000, catalog No. 2118), pS727–signal transducer and activator of transcription 3 (STAT3; 1:1000, catalog No. 9134), STAT3 (1:1000, catalog No. 12640), and α-tubulin (1:1000, catalog No. 2125) were purchased from Cell Signaling Technology (Danvers, MA).
Techniques: Derivative Assay, Immunostaining, Western Blot, Expressing, Real-time Polymerase Chain Reaction, Gene Expression