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Emerging roles for sphingolipids in cellular aging.

Pushpendra Singh^1,2, Rong Li^3,4

¹Laboratory of Adjuvant and Antigen Research, US Military HIV Research Program, Walter Reed Army Institute of Research, 503 Robert Grant Avenue, Silver Spring, MD, 20910, USA. psingh@hivresearch.org.

Current Genetics

|December 21, 2017

Summary

This summary is machine-generated.

Sphingolipids regulate aging by controlling the asymmetric segregation of aging factors like multidrug-resistant (MDR) proteins in budding yeast. This process impacts cellular aging and may extend to human aging mechanisms.

Keywords:

Asymmetric cell division Multidrug resistance proteins Replicative aging Sphingolipids

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Area of Science:

Cellular and Molecular Biology
Aging Research
Yeast Genetics

Background:

Aging is a complex process involving the decline of physiological functions.
Budding yeast (Saccharomyces cerevisiae) serves as a model organism for studying aging due to asymmetric cell division.
Age asymmetry in yeast is linked to the segregation of factors like protein aggregates and dysfunctional organelles.

Purpose of the Study:

To investigate the role of sphingolipids in regulating age-dependent segregation of cellular components.
To explore the mechanisms by which sphingolipids influence the aging process in yeast.
To discuss the potential implications of these findings for aging in vertebrate animals and humans.

Main Methods:

Utilized budding yeast (Saccharomyces cerevisiae) as a model system.
Investigated the asymmetric segregation of multidrug-resistant (MDR) proteins during yeast cell division.
Analyzed the role of sphingolipids in mediating the age-dependent partitioning of MDR proteins.

Main Results:

Sphingolipids were found to facilitate the age-dependent segregation of MDR proteins between mother and daughter yeast cells.
This asymmetric partitioning of MDR proteins is linked to functional decline and aging.
The findings suggest a conserved mechanism of aging regulation involving sphingolipids.

Conclusions:

Sphingolipids play a crucial role in regulating cellular aging through asymmetric segregation of key proteins.
Understanding sphingolipid function in yeast aging may provide insights into aging processes in higher organisms, including humans.
This research highlights sphingolipids as potential targets for interventions aimed at modulating aging.