{"id":4457,"date":"2025-12-17T10:13:35","date_gmt":"2025-12-17T03:13:35","guid":{"rendered":"https:\/\/www2.si.mahidol.ac.th\/department\/biochemistry\/?p=4457"},"modified":"2025-12-17T10:14:33","modified_gmt":"2025-12-17T03:14:33","slug":"quantification-of-escape-from-x-chromosome-inactivation-with-single-cell-omics-data-reveals-heterogeneity-across-cell-types-and-tissues","status":"publish","type":"post","link":"https:\/\/www2.si.mahidol.ac.th\/department\/biochemistry\/en\/quantification-of-escape-from-x-chromosome-inactivation-with-single-cell-omics-data-reveals-heterogeneity-across-cell-types-and-tissues\/","title":{"rendered":"Quantification of escape from X chromosome inactivation with single-cell omics data reveals heterogeneity across cell types and tissues"},"content":{"rendered":"
Several X-linked genes escape from X chromosome inactivation (XCI), while differences in escape across cell types and tissues are still poorly characterized. Here, we developed scLinaX for directly quantifying relative gene expression from the inactivated X chromosome with droplet-based single-cell RNA sequencing (scRNA-seq) data. The scLinaX and differentially expressed gene analyses with large-scale blood scRNA-seq datasets consistently identified the stronger escape in lymphocytes than in myeloid cells. An extension of scLinaX to a 10x multiome dataset (scLinaX-multi) suggested a stronger escape in lymphocytes than in myeloid cells at the chromatin-accessibility level. The scLinaX analysis of human multiple-organ scRNA-seq datasets also identified the relatively strong degree of escape from XCI in lymphoid tissues and lymphocytes. Finally, effect size comparisons of genome-wide association studies between sexes suggested the underlying impact of escape on the genotype-phenotype association. Overall, scLinaX and the quantified escape catalog identified the heterogeneity of escape across cell types and tissues.<\/p>\n