Journal: The Journal of Clinical Investigation
Article Title: Cell-free DNA epigenomic profiling enables noninvasive detection and monitoring of translocation renal cell carcinoma
doi: 10.1172/JCI195725
Figure Lengend Snippet: ( A ) Epigenomic datasets generated from 51 plasma samples collected from patients with metastatic tRCC ( N = 30; 10 patients), metastatic ccRCC ( N = 12; 12 patients), or those acting as healthy controls ( N = 9; 9 individuals). ( B ) Integrative Genomics Viewer tracks from ChIP-seq profiles for H3K4me3, H3K27ac, and TFE3 in cell lines (tRCC: UOK109, s-TFE; ccRCC: 786-O, A-498) and plasma samples at representative tRCC-selective ( GPR143 ) or ccRCC-selective ( C1Q1L ) loci. ( C ) Aggregated cf-ChIP signal compared among tRCC, ccRCC, and healthy plasma samples for the following marks; the box plots quantify the AUCs for each histone mark (left to right): H3K4me3 signal at cell line–informed H3K4me3 tRCC-up sites was significantly higher in 28 tRCC samples from 10 patients compared with 11 ccRCC samples from 11 patients ( P = 0.0027) and showed a trend when compared with 9 healthy control samples ( P = 0.079); H3K27ac signal at cell line–informed H3K27ac tRCC-up sites was significantly higher in 27 tRCC samples from 10 patients compared with 12 ccRCC samples from 12 patients ( P = 0.0029) and with 9 healthy control samples from 9 individuals ( P = 0.00017); H3K27ac signal at TFE3 fusion–occupied TFBSs was significantly higher in 27 tRCC samples from 10 patients compared with 12 ccRCC samples from 12 patients ( P = 0.0003) and with 9 healthy control samples from 9 individuals ( P = 0.00042). P values were determined by Wilcoxon’s test. ( D ) Comparison of TIESs of cf-ChIP H3K4me3 and H3K27ac signals at cell line–informed sites (H3K4me3 tRCC-up peaks, H3K27ac tRCC-up peaks, and TFE3 fusion–occupied binding sites) among tRCC, ccRCC, and healthy plasma, with samples color-scaled according to tumor fraction. TIES was significantly higher in 27 tRCC samples from 10 patients compared with 11 ccRCC samples from 11 patients ( P = 0.00035) and with 9 healthy control samples from 9 individuals ( P = 0.000049). HP, healthy plasma. P values were determined by Wilcoxon’s test. The box plots depict the minimum and maximum values (whiskers), the upper and lower quartiles, and the median.
Article Snippet: The cell lines 786-O (ATCC, CRL-1932; RRID: CVCL_1051), 293T (ATCC, CRL-11268; RRID: CVCL_0063), A-498 (ATCC, HTB-44; RRID: CVCL_1056), 769-P (ATCC, CRL-1933; RRID: CVCL_1050), KMRC-1 (JCRB1010; RRID: CVCL_2983), Caki-1 (ATCC, HTB-46; RRID: CVCL_0234), UOK109 (RRID: CVCL_B123), and UOK146 (RRID: CVCL_B123) were obtained from W. Marston Linehan’s laboratory (National Cancer Institute).
Techniques: Generated, Clinical Proteomics, ChIP-sequencing, Control, Comparison, Binding Assay