Glycolysis and the Pentose Phosphate Pathway Promote LPS-Induced NOX2 Oxidase- and IFN-β-Dependent Inflammation in Macrophages.
Glycolysis and the Pentose Phosphate Pathway Promote LPS-Induced NOX2 Oxidase- and IFN-β-Dependent Inflammation in Macrophages.
复制标题
DOI:
10.3390/antiox11081488
复制
发表时间:
2022-07-29
期刊:
影响因子:
--
通讯作者:
中科院分区:
文献类型:
--
作者:
Macrophages undergo a metabolic switch from oxidative phosphorylation to glycolysis when exposed to gram-negative bacterial lipopolysaccharide (LPS), which modulates antibacterial host defence mechanisms. Here, we show that LPS treatment of macrophages increased the classical oxidative burst response via the NADPH oxidase (NOX) 2 enzyme, which was blocked by 2-deoxyglucose (2-DG) inhibition of glycolysis. The inhibition of the pentose phosphate pathway with 6-aminonicotinamide (6-AN) also suppressed the LPS-induced increase in NOX2 activity and was associated with a significant reduction in the mRNA expression of NOX2 and its organizer protein p47phox. Notably, the LPS-dependent enhancement in NOX2 oxidase activity was independent of both succinate and mitochondrial reactive oxygen species (ROS) production. LPS also increased type I IFN-β expression, which was suppressed by 2-DG and 6-AN and, therefore, is dependent on glycolysis and the pentose phosphate pathway. The type I IFN-β response to LPS was also inhibited by apocynin pre-treatment, suggesting that NOX2-derived ROS promotes the TLR4-induced response to LPS. Moreover, recombinant IFN-β increased NOX2 oxidase-dependent ROS production, as well as NOX2 and p47phox expression. Our findings identify a previously undescribed molecular mechanism where both glycolysis and the pentose phosphate pathway are required to promote LPS-induced inflammation in macrophages.
登录
查看更多内容
影响因子:
5.3
作者:
Rastogi R;Geng X;Li F;Ding Y
通讯作者:
Ding Y
影响因子:
3.3
作者:
Liou GY;Storz P
通讯作者:
Storz P
影响因子:
16.6
作者:
To EE;Vlahos R;Luong R;Halls ML;Reading PC;King PT;Chan C;Drummond GR;Sobey CG;Broughton BRS;Starkey MR;van der Sluis R;Lewin SR;Bozinovski S;O'Neill LAJ;Quach T;Porter CJH;Brooks DA;O'Leary JJ;Selemidis S
通讯作者:
Selemidis S
影响因子:
3.8
作者:
Kumari S;Badana AK;G MM;G S;Malla R
通讯作者:
Malla R
影响因子:
64.5
作者:
Mills EL;Kelly B;Logan A;Costa ASH;Varma M;Bryant CE;Tourlomousis P;Däbritz JHM;Gottlieb E;Latorre I;Corr SC;McManus G;Ryan D;Jacobs HT;Szibor M;Xavier RJ;Braun T;Frezza C;Murphy MP;O'Neill LA
通讯作者:
O'Neill LA