Abstract

While the main role of phagocytic scavenger cells consists of the neutralization and elimination of pathogens, they also keep the body fluids clean by taking up and breaking down waste material. Since a build-up of waste is thought to contribute to the aging process, these cells become particularly pertinent in the research field of aging. Nevertheless, a direct link between their scavenging functions and the aging process has yet to be established. Integrative approaches involving various model organisms hold promise to elucidate this potential, but are lagging behind since the diversity and evolutionary relationship of these cells across animal species remain unclear. In this perspective, we review the current knowledge associating phagocytic scavenger cells with aging in vertebrate and invertebrate animals, as well as put forward important questions for further exploration. Additionally, we highlight future challenges and propose a constructive approach for tackling them.

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