TY - JOUR
T1 - (Poly)phenol metabolites from Arbutus unedo leaves protect yeast from oxidative injury by activation of antioxidant and protein clearance pathways
AU - Jardim, Carolina
AU - Macedo, Diana
AU - Figueira, Inês
AU - Dobson, Gary
AU - McDougall, Gordon J.
AU - Stewart, Derek
AU - Ferreira, Ricardo B.
AU - Menezes, Regina
AU - Santos, Cláudia N.
PY - 2017/5/1
Y1 - 2017/5/1
N2 - Oxidative stress is a key process in several diseases and a growing body of preclinical/clinical evidence has pushed forward the health benefits of (poly)phenols. The protective potential of Corema album and Arbutus unedo (Poly)phenol Digested Metabolites (PDM), generated after in vitro digestion was evaluated. Chemical alterations caused by the digestion led to alterations of compounds reactivity. A. unedo leaf PDM arose as the fraction conferring the highest protective activity to the wild type and oxidative stress-sensitive yap1 yeast strains challenged with H2O2. Our mechanistic studies disclosed the effect of A. unedo leaf PDM on cell redox homeostasis and mitochondrial function, and identified HAP4, SOD1, SOD2, GSH1 and GLR1 as mediators of cellular protection. Also, RPN4- and ATG8-associated protein clearance pathways were revealed as putative targets. Overall, these data suggest the nutraceutical potential of A. unedo leaf PDM as a functional food for human health.
AB - Oxidative stress is a key process in several diseases and a growing body of preclinical/clinical evidence has pushed forward the health benefits of (poly)phenols. The protective potential of Corema album and Arbutus unedo (Poly)phenol Digested Metabolites (PDM), generated after in vitro digestion was evaluated. Chemical alterations caused by the digestion led to alterations of compounds reactivity. A. unedo leaf PDM arose as the fraction conferring the highest protective activity to the wild type and oxidative stress-sensitive yap1 yeast strains challenged with H2O2. Our mechanistic studies disclosed the effect of A. unedo leaf PDM on cell redox homeostasis and mitochondrial function, and identified HAP4, SOD1, SOD2, GSH1 and GLR1 as mediators of cellular protection. Also, RPN4- and ATG8-associated protein clearance pathways were revealed as putative targets. Overall, these data suggest the nutraceutical potential of A. unedo leaf PDM as a functional food for human health.
KW - Bioaccessibility
KW - Oxidative stress
KW - Polyphenols
KW - Redox homoeostasis
KW - Saccharomyces cerevisiae
KW - Yap1
UR - http://www.scopus.com/inward/record.url?scp=85015044027&partnerID=8YFLogxK
U2 - 10.1016/j.jff.2017.03.010
DO - 10.1016/j.jff.2017.03.010
M3 - Article
AN - SCOPUS:85015044027
SN - 1756-4646
VL - 32
SP - 333
EP - 346
JO - Journal of Functional Foods
JF - Journal of Functional Foods
ER -
