1
|
Bauer J, Antosh M, Chang C, Schorl C, Kolli S, Neretti N, Helfand SL. Comparative transcriptional profiling identifies takeout as a gene that regulates life span. Aging (Albany NY) 2010; 2:298-310. [PMID: 20519778 PMCID: PMC2898020 DOI: 10.18632/aging.100146] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A major challenge in translating the positive effects of dietary restriction (DR) for the improvement of human health is the development of therapeutic mimics. One approach to finding DR mimics is based upon identification of the proximal effectors of DR life span extension. Whole genome profiling of DR in Drosophila shows a large number of changes in gene expression, making it difficult to establish which changes are involved in life span determination as opposed to other unrelated physiological changes. We used comparative whole genome expression profiling to discover genes whose change in expression is shared between DR and two molecular genetic life span extending interventions related to DR, increased dSir2 and decreased Dmp53 activity. We find twenty-one genes shared among the three related life span extending interventions. One of these genes, takeout, thought to be involved in circadian rhythms, feeding behavior and juvenile hormone binding is also increased in four other life span extending conditions: Rpd3, Indy, chico and methuselah. We demonstrate takeout is involved in longevity determination by specifically increasing adult takeout expression and extending life span. These studies demonstrate the power of comparative whole genome transcriptional profiling for identifying specific downstream elements of the DR life span extending pathway.
Collapse
Affiliation(s)
- Johannes Bauer
- Department of Molecular Biology, Cell Biology and
Biochemistry, Division of Biology and Medicine, Brown University,
Providence, RI 02912, USA
- These authors shared equally in the work
- Present address: Department of Biological
Sciences, Southern Methodist University, 6501 Airline Drive, 237-DLS,
Dallas, TX 75275, USA
| | - Michael Antosh
- Institute for Brain and Neural Systems, Brown
University, Providence, RI 02912, USA
- Department of Physics, Brown University,
Providence, RI 02912, USA
- These authors shared equally in the work
| | - Chengyi Chang
- Department of Molecular Biology, Cell Biology and
Biochemistry, Division of Biology and Medicine, Brown University,
Providence, RI 02912, USA
| | - Christoph Schorl
- Department of Molecular Biology, Cell Biology and
Biochemistry, Division of Biology and Medicine, Brown University,
Providence, RI 02912, USA
| | - Santharam Kolli
- Present address: Department of Biological
Sciences, Southern Methodist University, 6501 Airline Drive, 237-DLS,
Dallas, TX 75275, USA
| | - Nicola Neretti
- Department of Molecular Biology, Cell Biology and
Biochemistry, Division of Biology and Medicine, Brown University,
Providence, RI 02912, USA
- Institute for Brain and Neural Systems, Brown
University, Providence, RI 02912, USA
| | - Stephen L. Helfand
- Department of Molecular Biology, Cell Biology and
Biochemistry, Division of Biology and Medicine, Brown University,
Providence, RI 02912, USA
| |
Collapse
|