Why Aging May Be a Program, Not a Breakdown

Key Points:

• Aging is traditionally viewed as a result of molecular and cellular decay due to external damage or internal breakdown, leading to the visible signs of aging and eventual death when repair mechanisms fail.
• Cell biologist Junyue Cao challenges this view, proposing that aging is a programmed, stepwise process with distinct stages, similar to embryonic development, beginning likely before age 30 in humans.
• Cao’s research uses advanced single-cell genomics technology to map molecular and cellular changes during aging in mice, revealing an organized progression rather than random deterioration.
• His interest in aging was motivated by personal experiences and a scientific curiosity that evolved from studying protein deterioration to recognizing the complexity and specificity of aging across different cell types.
• Cao developed high-throughput methods during graduate school to analyze molecular dynamics and has applied these tools in his Rockefeller University lab since 2020 to deepen understanding of the aging process.