Heterogeneous Escape from X Chromosome Inactivation Results in Sex Differences in Type I IFN Responses at the Single Human pDC Level
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Heterogeneous Escape from X Chromosome Inactivation Results in Sex Differences in Type I IFN Responses at the Single Human pDC Level. / Hagen, Sven Hendrik; Henseling, Florian; Hennesen, Jana; Savel, Hélène; Delahaye, Solenne; Richert, Laura; Ziegler, Susanne Maria; Altfeld, Marcus.
In: CELL REP, Vol. 33, No. 10, 108485, 08.12.2020.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Heterogeneous Escape from X Chromosome Inactivation Results in Sex Differences in Type I IFN Responses at the Single Human pDC Level
AU - Hagen, Sven Hendrik
AU - Henseling, Florian
AU - Hennesen, Jana
AU - Savel, Hélène
AU - Delahaye, Solenne
AU - Richert, Laura
AU - Ziegler, Susanne Maria
AU - Altfeld, Marcus
N1 - Copyright © 2020 The Authors. Published by Elsevier Inc. All rights reserved.
PY - 2020/12/8
Y1 - 2020/12/8
N2 - Immune responses differ between women and men, and type I interferon (IFN) responses following Toll-like receptor 7 (TLR7) stimulation are higher in women. The precise mechanisms driving these sex differences in immunity are unknown. To investigate possible genetic factors, we quantify escape from X chromosome inactivation (XCI) for TLR7 and four other genes (RPS6KA3, CYBB, BTK, and IL13RA1) at the single plasmacytoid dendritic cell (pDC) level. We observe escape from XCI for all investigated genes, leading to biallelic expression patterns. pDCs with biallelic gene expression have significantly higher mRNA levels of the respective genes. Unstimulated pDCs with biallelic TLR7 expression exhibit significantly higher IFNα/β mRNA levels, and IFNα exposure results in significantly increased IFNα/β protein production by pDCs. These results identify unanticipated heterogeneity in escape from XCI of several genes in pDCs and highlight the important contribution of X chromosome factors to sex differences in type I IFN responses, which might explain observed sex differences in human diseases.
AB - Immune responses differ between women and men, and type I interferon (IFN) responses following Toll-like receptor 7 (TLR7) stimulation are higher in women. The precise mechanisms driving these sex differences in immunity are unknown. To investigate possible genetic factors, we quantify escape from X chromosome inactivation (XCI) for TLR7 and four other genes (RPS6KA3, CYBB, BTK, and IL13RA1) at the single plasmacytoid dendritic cell (pDC) level. We observe escape from XCI for all investigated genes, leading to biallelic expression patterns. pDCs with biallelic gene expression have significantly higher mRNA levels of the respective genes. Unstimulated pDCs with biallelic TLR7 expression exhibit significantly higher IFNα/β mRNA levels, and IFNα exposure results in significantly increased IFNα/β protein production by pDCs. These results identify unanticipated heterogeneity in escape from XCI of several genes in pDCs and highlight the important contribution of X chromosome factors to sex differences in type I IFN responses, which might explain observed sex differences in human diseases.
KW - Cells, Cultured
KW - Dendritic Cells/immunology
KW - Female
KW - Gene Expression/genetics
KW - Humans
KW - Immunity, Innate/physiology
KW - Interferon Type I/metabolism
KW - Male
KW - RNA, Messenger/metabolism
KW - Sex Characteristics
KW - Sex Factors
KW - Signal Transduction/genetics
KW - Toll-Like Receptor 7/metabolism
KW - X Chromosome Inactivation/genetics
U2 - 10.1016/j.celrep.2020.108485
DO - 10.1016/j.celrep.2020.108485
M3 - SCORING: Journal article
C2 - 33296655
VL - 33
JO - CELL REP
JF - CELL REP
SN - 2211-1247
IS - 10
M1 - 108485
ER -