Aging and Adaptation in Infectious Diseases II/Session IV: Short Talks for Late Arrival
May 1, 2019
10:00 am - 12:00 pm
- Chair
Jean Carlson (UCSB)
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- Presenter
- Andrea L. Graham (Princeton)
Abstract
Research on laboratory mice has provided much of what we know about the fundamental biology of the mammalian immune system. Yet because so few life-long experiments have been conducted on mice, we know remarkably little about immunosenescence in “the model mammal.” Classic work on Biozzi mice is an important exception. I will describe some of the experiments and key insights of the work of Biozzi and colleagues in the 1960s-1980s, especially on links between antibody responsiveness and organismal longevity.
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- Presenter
- Shenshen Wang (UCLA)
- Jiming Sheng (UCLA)
Abstract
In this collaborative project, we seek to understand various observations on immunosenescence, such as the breakdown of innate-adaptive collaboration and increasing variability of individual performance later in life. Earlier theoretical works have yielded much insight on the capacity of innate and adaptive immunity separately, yet these models with only one arm of the defense cannot explain the observed inflamm-aging (aging with inflammation). By considering the crosstalk between innate and adaptive responses, we build an integrative model that shows promising results consistent with experiments. Our preliminary findings highlight potential determinants of individual fates as well as the timing of inflammation dominance.
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- David Schneider (Stanford)
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- Jenny Tung (Duke Univ.)
Abstract
In social species, including our own, interactions with other members of the same species powerfully shape the environment that animals face each day. These interactions mediate the evolutionary costs and benefits of group living. My lab uses nonhuman animal models—particularly social primates—to study how the nature and timing of social interactions impact health and fitness-related outcomes. Recently, we used an experimental model for social status in captive rhesus macaques to show that social status-driven gene expression patterns carry a signature of past social history. We also found that high gene expression levels in inflammation-related pathways predict high social status in wild male baboons. Given that inflammation is widely thought to be costly, our findings suggest that both social adversity in rhesus macaques and competition for rank in male baboons may have long-term effects on health during aging. Together, our findings emphasize the importance of social context in shaping the relationship between social status and immune function.
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