Abstract
The nematode Caenorhabditis elegans continues to serve as a useful model of life extension caused by dietary restriction. Using this model, downstream effectors of dietary restriction-induced longevity have been elucidated, including neuropeptides and cell-surface receptors. Although it remains possible that different forms of dietary restriction may utilize both specific and overlapping mechanisms to promote longevity, the nematode model has revealed roles for autophagy, metabolic energy-sensing and the hypoxic response. The nematode has also been used to identify specific tissues required for life extension via DR, including coelomocytes, intestine, and neurons.
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