Age-related and sex-specific differences in proteasome activity in individual Drosophila flies from wild type, longevity-selected and stress resistant strains

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

Standard

I: Biogerontology, Bind 13, Nr. 4, 2012, s. 429-438.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

Bibtex

@article{5852efc4c04647fd922797ff8b35e434,

title = "Age-related and sex-specific differences in proteasome activity in individual Drosophila flies from wild type, longevity-selected and stress resistant strains",

abstract = "In this study we have measured the caspase-like proteasome activity in individual male and female Drosophila flies by using a non-denaturing lysing technique that consistently extracts total protein. The mean proteasome activity in control C1 females was more than 2 times higher as compared with that in C1 males. However, in longevity-selected LS1 flies the proteasome activity was significantly lower compared to C1 flies, but the sex differences were maintained to some extent. Five other stress resistant lines also had significantly reduced proteasome activity in both sexes. During ageing, there was a progressive decrease in proteasome activity in C1 females, but not in C1 males. This age-related decline in proteasome activity observed in C1 females was not observed in LS1 flies. We conclude that the proteasome activity in controlmale and female flies is significantly different from each other and that increasedlifespan and stress resistance lead to a reduction in proteasome activity and recession of the age-related decline observed in control females.",

keywords = "ageing, longevity, stress, hormesis",

author = "Hansen, {Tina {\O}stergaard} and Sarup, {Pernille Merete} and Volker Loeschcke and Suresh Rattan",

year = "2012",

doi = "10.1007/s10522-012-9387-2",

language = "English",

volume = "13",

pages = "429--438",

journal = "Biogerontology",

issn = "1389-5729",

publisher = "Springer",

number = "4",

}

RIS

TY - JOUR

T1 - Age-related and sex-specific differences in proteasome activity in individual Drosophila flies from wild type, longevity-selected and stress resistant strains

AU - Hansen, Tina Østergaard

AU - Sarup, Pernille Merete

AU - Loeschcke, Volker

AU - Rattan, Suresh

PY - 2012

Y1 - 2012

N2 - In this study we have measured the caspase-like proteasome activity in individual male and female Drosophila flies by using a non-denaturing lysing technique that consistently extracts total protein. The mean proteasome activity in control C1 females was more than 2 times higher as compared with that in C1 males. However, in longevity-selected LS1 flies the proteasome activity was significantly lower compared to C1 flies, but the sex differences were maintained to some extent. Five other stress resistant lines also had significantly reduced proteasome activity in both sexes. During ageing, there was a progressive decrease in proteasome activity in C1 females, but not in C1 males. This age-related decline in proteasome activity observed in C1 females was not observed in LS1 flies. We conclude that the proteasome activity in controlmale and female flies is significantly different from each other and that increasedlifespan and stress resistance lead to a reduction in proteasome activity and recession of the age-related decline observed in control females.

AB - In this study we have measured the caspase-like proteasome activity in individual male and female Drosophila flies by using a non-denaturing lysing technique that consistently extracts total protein. The mean proteasome activity in control C1 females was more than 2 times higher as compared with that in C1 males. However, in longevity-selected LS1 flies the proteasome activity was significantly lower compared to C1 flies, but the sex differences were maintained to some extent. Five other stress resistant lines also had significantly reduced proteasome activity in both sexes. During ageing, there was a progressive decrease in proteasome activity in C1 females, but not in C1 males. This age-related decline in proteasome activity observed in C1 females was not observed in LS1 flies. We conclude that the proteasome activity in controlmale and female flies is significantly different from each other and that increasedlifespan and stress resistance lead to a reduction in proteasome activity and recession of the age-related decline observed in control females.

KW - ageing, longevity, stress, hormesis

U2 - 10.1007/s10522-012-9387-2

DO - 10.1007/s10522-012-9387-2

M3 - Journal article

C2 - 22752735

VL - 13

SP - 429

EP - 438

JO - Biogerontology

JF - Biogerontology

SN - 1389-5729

IS - 4

ER -