Journal: PLOS Pathogens
Article Title: STAT3, MYC, and EBNA1 cooperate through a ZC3H18 transcriptional network to regulate survival and proliferation of EBV-positive lymphomas
doi: 10.1371/journal.ppat.1013166
Figure Lengend Snippet: (A-F) One million HH514-16 BL cells were transfected with two siRNAs targeting each STAT3 (A, D), c-MYC (B, E), or BKRF1 (EBNA1; C, F) versus control siRNA. After 24 hours, cells were collected for immunoblotting with indicated antibodies (A-C) or subjected to RT-qPCR to analyze ZC3H18 , STAT3 , c-MYC , and EBNA1 transcript levels (D-F). (G) One million EBV - BJAB cells were transfected with two siRNAs targeting STAT3 versus control siRNA. After 24 hours, cells were collected for RT-qPCR to analyze STAT3 , c-MYC and ZC3H18 transcript levels. (H) One million cells were seeded at 5 × 10 5 /ml and harvested 24 hours later. The abundance of STAT3 and c-MYC transcripts was analyzed by RT-qPCR in EBV - BJAB, EBV - Akata BL, and EBV + Akata BL cells. (I) STAT3, MYC and EBNA1 plasmids were transfected into EBV - BJAB, EBV - Akata BL, and EBV + Akata BL cells. After 48 hours, cells were collected for RT-qPCR to assess the abundance of ZC3H18 , STAT3 , c-MYC and EBNA1 transcripts. Error bars, SEM of 3 technical replicates; *, p < 0.05; **, p < 0.01; ***, p < 0.001 (versus control); NS, not significant; experiments were performed two to four times.
Article Snippet: The following antibodies were used for immunostaining: rabbit anti-STAT3 antibody (4904S, Cell Signaling Technology), mouse anti-EBNA1 antibody (sc-81581, Santa Cruz Biotechnology), rabbit anti-MYC antibody (A190-105A, Bethyl Laboratories), mouse anti-β-actin antibody (clone AC-15) (A1978, Sigma-Aldrich), rabbit anti-phospho-IκBα (Ser32) antibody (2859S, Cell Signaling Technology), rabbit anti-IκBα antibody (9242S, Cell Signaling Technology), rabbit anti-p65 antibody (8242S, Cell Signaling Technology), rabbit anti-p50 antibody (13586, Cell Signaling Technology), rabbit anti-ZC3H18 antibody (A304-682A, Bethyl Laboratories), rabbit anti-Caspase 3 antibody (GTX110543, GeneTex), mouse anti-Cyclin A antibody (sc-53228, Santa Cruz Biotechnology), rabbit anti-Cyclin B antibody (4138S, Cell Signaling Technology), rabbit anti-Cyclin E antibody (A301-566, Bethyl Laboratories), mouse anti-ZEBRA antibody (sc-53904, Santa Cruz Biotechnology), rabbit anti-PCNA antibody (A300-276, Bethyl Laboratories), HRP-conjugated goat anti-mouse IgG (626520, Thermo Fisher Scientific), and HRP-conjugated goat anti-rabbit IgG (31460, Thermo Fisher Scientific).
Techniques: Transfection, Control, Western Blot, Quantitative RT-PCR