Endogenous metabolism in endothelial and immune cells generates most of the tissue vitamin B3 (nicotinamide).
Endogenous metabolism in endothelial and immune cells generates most of the tissue vitamin B3 (nicotinamide).
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DOI:
10.1016/j.isci.2022.105431
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发表时间:
2022-11-18
期刊:
影响因子:
5.8
通讯作者:
Chini, Eduardo Nunes
中科院分区:
文献类型:
--
作者:
Zeidler, Julianna D.;Chini, Claudia C. S.;Kanamori, Karina S.;Kashyap, Sonu;Espindola-Netto, Jair M.;Thompson, Katie;Warner, Gina;Cabral, Fernanda S.;Peclat, Thais R.;Gomez, Lilian Sales;Lopez, Sierra A.;Wandersee, Miles K.;Schoon, Renee A.;Reid, Kimberly;Menzies, Keir;Beckedorff, Felipe;Reid, Joel M.;Brachs, Sebastian;Meyer, Ralph G.;Meyer-Ficca, Mirella L.;Chini, Eduardo Nunes
In mammals, nicotinamide (NAM) is the primary NAD precursor available in circulation, a signaling molecule, and a precursor for methyl-nicotinamide (M-NAM) synthesis. However, our knowledge about how the body regulates tissue NAM levels is still limited. Here we demonstrate that dietary vitamin B3 partially regulates plasma NAM and NAM-derived metabolites, but not their tissue levels. We found that NAD de novo synthesis from tryptophan contributes to plasma and tissue NAM, likely by providing substrates for NAD-degrading enzymes. We also demonstrate that tissue NAM is mainly generated by endogenous metabolism and that the NADase CD38 is the main enzyme that produces tissue NAM. Tissue-specific CD38-floxed mice revealed that CD38 activity on endothelial and immune cells is the major contributor to tissue steady-state levels of NAM in tissues like spleen and heart. Our findings uncover the presence of different pools of NAM in the body and a central role for CD38 in regulating tissue NAM levels. Different pools of nicotinamide (NAM) exist in the organism NAD de novo synthesis and dietetic NAD precursors regulate the plasma NAM pool CD38 in endothelial and immune cells regulates tissue NAM, but not plasma NAM pool Tissue NAM used for M-NAM synthesis is a CD38-independent pool Biological sciences; Biochemistry; Molecular biology; Immunology
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影响因子:
20.8
作者:
Chini CCS;Peclat TR;Warner GM;Kashyap S;Espindola-Netto JM;de Oliveira GC;Gomez LS;Hogan KA;Tarragó MG;Puranik AS;Agorrody G;Thompson KL;Dang K;Clarke S;Childs BG;Kanamori KS;Witte MA;Vidal P;Kirkland AL;De Cecco M;Chellappa K;McReynolds MR;Jankowski C;Tchkonia T;Kirkland JL;Sedivy JM;van Deursen JM;Baker DJ;van Schooten W;Rabinowitz JD;Baur JA;Chini EN
通讯作者:
Chini EN
影响因子:
5.6
作者:
Bar A;Olkowicz M;Tyrankiewicz U;Kus E;Jasinski K;Smolenski RT;Skorka T;Chlopicki S
通讯作者:
Chlopicki S
影响因子:
3.4
作者:
Chen, Yu;Zhang, Jingfan;Li, Ling
通讯作者:
Li, Ling
DOI:
10.1016/j.bbrc.2019.03.199
发表时间:
2019-05-28
影响因子:
3.1
作者:
Chini, Claudia;Hogan, Kelly A.;Chini, Eduardo
通讯作者:
Chini, Eduardo
影响因子:
20.8
作者:
Covarrubias AJ;Kale A;Perrone R;Lopez-Dominguez JA;Pisco AO;Kasler HG;Schmidt MS;Heckenbach I;Kwok R;Wiley CD;Wong HS;Gibbs E;Iyer SS;Basisty N;Wu Q;Kim IJ;Silva E;Vitangcol K;Shin KO;Lee YM;Riley R;Ben-Sahra I;Ott M;Schilling B;Scheibye-Knudsen M;Ishihara K;Quake SR;Newman J;Brenner C;Campisi J;Verdin E
通讯作者:
Verdin E