Genetically varied mouse populations revealing genetic elements contributing to SARS-CoV-2 infection risk.
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Older people are at greater risk of contracting and dying from SARS-CoV-2, the virus that causes COVID-19, but the range of infectivity varies widely even among the elderly. To tease out the genetic factors that contribute to coronavirus susceptibility, Vineet Menachery, Ph.D., of the University of Texas Medical Branch in Galveston is working with a genetically diverse panel of mice to explore how host genetics impacts age-dependent susceptibility to infection.
Jennifer Trowbridge, Ph.D.
Professor, The Dattels Family Chair
Researches regulation of stem cells in the blood in normal development, aging and leukemia transformation.
Meet JenniferJennifer Trowbridge, Ph.D.
Professor, The Dattels Family Chair
Researches regulation of stem cells in the blood in normal development, aging and leukemia transformation.
Meet JenniferGenetically diverse mouse populations reveal secrets of the genomeDiscoveries in JAX-founded Collaborative Cross, Diversity Outbred populations show value of multi-parent model organism systemsCollaborative Cross mice, the brainchild of JAX scientists including Professors Elissa Chesler, Ph.D., and Gary Churchill, Ph.D., and their international collaborators, are the product of interbreeding eight genetically defined inbred mouse strains. Altogether, the resulting recombinant mouse strains reflect more genetic diversity than the entire human population.
Jennifer Trowbridge, Ph.D.
Professor, The Dattels Family Chair
Researches regulation of stem cells in the blood in normal development, aging and leukemia transformation.
Meet JenniferThe National Institute of Allergy and Infectious Disease has awarded a two-year exploratory grant to Menachery, in collaboration with Jason Bubier, Ph.D., a JAX research scientist in Chesler’s lab, to identify the regions of the genome involved in controlling variable susceptibility to SARS-CoV, the coronavirus that caused the Severe Acute Respiratory Syndrome pandemic of the early 2000s
Menachery is looking at a subset of the Collaborative Cross mice that behave differently across age in response to viral infection. “One set of strains gets more disease as the mice age,” Bubier says, “another set has equivalent disease in old and young, and the third group become resistant as they age.”
“Our preliminary results indicate that certain genetic elements contribute to age-dependent susceptibly to SARS-CoV infection,” Menachery says. “These genetic factors will provide a foundation for understanding the role of genetic variation in coronavirus infection and aging processes, and we expect the results to also to inform future treatment approaches for COVID-19 in elderly patients.”
National Institute of Allergy and Infectious Disease: The Host Genetics of Age-Dependent Susceptibility, Grant Number 1R21AI145400-01A1
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