SEP 07, 2016 6:00 AM PDT

Invisible Influence: How the indoor microbiome influences health

Speaker
  • Faculty Director, The Microbiome Center, Professor, Department of Surgery, The University of Chicago
    Biography
      Jack Gilbert is the Faculty Director of the Microbiome Center, a Professor in the Department of Surgery at the University of Chicago Medicine, Senior Scientist (Adjunct) at Marine Biological Laboratory, and Group Leader in Microbial Ecology at Argonne National Laboratory.

      Gilbert's research is focused on the ecology, evolution, and metabolic dynamics of microbial ecosystems from myriad environments including built environments, oceans, rivers, soils, air, plants, animals, and humans. His primary interest is in using omics technologies (metagenomics, metatranscriptomics, metabolomics) to capture longitudinal dynamics in microbial ecosystems and then model how these interactions relate the environmental variables, be those variables disease onset and immunology in humans or chemical transformations in plants and soils. Gilbert is developing unifying principles which govern how microbial communities assemble. He founded the Earth Microbiome Project, and co-founded the American Gut Project, and is the editor-in-chief of the journal mSystems.

    Abstract

    The human race, like all macrobiological life, evolved in a sea of microbes. There was no way to keep the bacterial and archaeal hoards at bay, so instead life evolved mechanisms to live with these invaders. The immune system was refined over millions of years to control our interaction with the microbial world, and even to use it as a mechanism of defense, food processing, and vitamin production. The immune system and the microbiome have shaped each other in extraordinarily elaborate and intricate ways. Here we will discuss some of the recent evidence highlighting these mechanisms of interaction. We will also discuss how the last 150 years, have started to disturb the delicate balance of the immune-microbe equilibrium. As our natural ecosystem has been restricted to the built environment, especially in the developed world, where an average of 90% of our lives take place indoors, our exposure to the microbial world has been corrupted. Modern buildings are equipped with surfaces and environmental systems designed to reduce the potential for microbial life to flourish.  This fundamental shift in our lifestyle is likely impacting the development and function of our immune systems in ways that we are only beginning to understand. We are now starting to experiment with adding bacteria back in to our overly sterile existence, in one such study we were able to significantly reduce cows milk allergy in infants through active manipulation of the gastrointestinal microbiota. Exploring the dynamic interactions that humans share with our indoor space, and mapping the interactions that lead to alterations in our own microbiome will be extremely important for determining the best way to augment our environment with a beneficial microbiome.

    Learning Objective 1: To understand the concept of the microbiome and it's importance in human health

    Learning Objective 2: To be able to identify routes of transmission of the microbiome to a human host.


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