Mechanisms and physiological function of daily haemoglobin oxidation rhythms in red blood cells
Mechanisms and physiological function of daily haemoglobin oxidation rhythms in red blood cells
复制标题
红细胞日常血红蛋白氧化节律的机制和生理功能
DOI:
10.1101/2021.10.11.463714
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Beale A
中科院分区:
文献类型:
--
作者:
Beale A
Cellular circadian rhythms confer temporal organisation upon physiology that is fundamental to human health. Rhythms are present in red blood cells (RBCs), the most abundant cell type in the body, but their physiological function is poorly understood. Here, we present a novel biochemical assay for haemoglobin (Hb) oxidation status which relies on a redox‐sensitive covalent haem‐Hb linkage that forms during SDS‐mediated cell lysis. Formation of this linkage is lowest when ferrous Hb is oxidised, in the form of ferric metHb. Daily haemoglobin oxidation rhythms are observed in mouse and human RBCs culturedin vitro, or taken from humansin vivo, and are unaffected by mutations that affect circadian rhythms in nucleated cells. These rhythms correlate with daily rhythms in core body temperature, with temperature lowest when metHb levels are highest. Raising metHb levels with dietary sodium nitrite can further decrease daytime core body temperature in mice via nitric oxide (NO) signalling. These results extend our molecular understanding of RBC circadian rhythms and suggest they contribute to the regulation of body temperature.
登录
查看更多内容
DOI:
10.1101/2020.05.16.099556
发表时间:
2020-05
期刊:
bioRxiv
影响因子:
--
作者:
David C. S. Wong;Estere Seinkmane;Alessandra Stangherlin;Aiwei Zeng;N. Rzechorzek;Andrew D. Beale;
通讯作者:
David C. S. Wong;Estere Seinkmane;Alessandra Stangherlin;Aiwei Zeng;N. Rzechorzek;Andrew D. Beale;
影响因子:
10.5
作者:
Maier, Bert;Wendt, Sabrina;Kramer, Achim
通讯作者:
Kramer, Achim
DOI:
10.1073/pnas.0811410106
发表时间:
2008-12-30
影响因子:
11.1
作者:
Hirota, Tsuyoshi;Lewis, Warren G.;Kay, Steve A.
通讯作者:
Kay, Steve A.
DOI:
10.1007/978-1-59745-198-7_166
发表时间:
2009
期刊:
The Biochemical journal
影响因子:
--
作者:
Katherine H. Pedone;L. Bernstein;M. Linder;J. Hepler
通讯作者:
J. Hepler
影响因子:
--
作者:
M. Cawein;C. Behlen;E. J. Lappat;J. Cohn
通讯作者:
J. Cohn