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Novel map reveals how immune cells fight and remember infections

Mouse immune study gives pointers for development of vaccines and immune therapies

Date:
October 12, 2020
Source:
Wellcome Trust Sanger Institute
Summary:
Researchers have created the first full dynamic map of how cells learn to fight microbes and then preserve a memory of this for future infections, by mapping the activity of tens of thousands of genes in mouse immune cells over the course of an infection. Published in Nature Immunology, this could guide research into T cells that are essential for generating immunity, to help scientists develop new vaccines and therapeutics for a range of diseases.
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Researchers have charted the activity of tens of thousands of genes in mouse immune cells over the course of an infection. The study from the University of Melbourne, Australia, the Wellcome Sanger Institute, and their collaborators created the first full dynamic map of how cells learn to fight microbes and then preserve a memory of this for future infections.

The findings, published in the journal Nature Immunology, could help scientists develop new vaccines and therapeutics for a range of diseases by guiding their research into a particular set of immune cells, known as CD4+ T cells, that are essential for generating immunity.

The international research team studied the CD4+ T cells during an experimental infection of mice with malaria-causing parasites, which invade and multiply inside red blood cells. With the aid of machine learning techniques, the research team combined the gene activity data over four weeks of infection to generate a comprehensive map of the developmental journeys taken by CD4+ T cells.

Dr Ashraful Haque, co-lead author from the University of Melbourne's Doherty Institute, said: "We traced thousands of individual genes to generate a map from initial infection to periods when cells firstly 'decide' between various immune roles for fighting the infection, and secondly preserve memories of that encounter. Our map revealed several novel genes that were active -- in particular, in a type of CD4+ T cells called T follicular helper cells. These are essential for making antibodies that protect against malaria but have not yet been well studied."

The scientists have shared their data through a freely available digital resource. This map allows immunology researchers worldwide to track the response of individual genes after infection.

Dr Sarah Teichmann, co-lead author from the Wellcome Sanger Institute, said: "Importantly, while our map was generated using an experimental model of malaria, it will be useful for studying T cell responses in almost any infectious or non-infectious disease, or treatment in which T cells are involved. Further investigations are needed to confirm that human cells have a similar map to mouse CD4+ T cells. However, we hope this discovery can point researchers in the right direction towards developing new vaccines for infectious diseases, new immune-therapies for certain cancers, and novel ways to prevent auto-immune conditions."


Story Source:

Materials provided by Wellcome Trust Sanger Institute. Note: Content may be edited for style and length.


Journal Reference:

  1. Megan S. F. Soon, Hyun Jae Lee, Jessica A. Engel, Jasmin Straube, Bryce S. Thomas, Clara P. S. Pernold, Lachlan S. Clarke, Pawat Laohamonthonkul, Rohit N. Haldar, Cameron G. Williams, Lianne I. M. Lansink, Marcela L. Moreira, Michael Bramhall, Lambros T. Koufariotis, Scott Wood, Xi Chen, Kylie R. James, Tapio Lönnberg, Steven W. Lane, Gabrielle T. Belz, Christian R. Engwerda, David S. Khoury, Miles P. Davenport, Valentine Svensson, Sarah A. Teichmann, Ashraful Haque. Transcriptome dynamics of CD4 T cells during malaria maps gradual transit from effector to memory. Nature Immunology, 2020; DOI: 10.1038/s41590-020-0800-8

Cite This Page:

Wellcome Trust Sanger Institute. "Novel map reveals how immune cells fight and remember infections." ScienceDaily. ScienceDaily, 12 October 2020. <www.sciencedaily.com/releases/2020/10/201012115955.htm>.
Wellcome Trust Sanger Institute. (2020, October 12). Novel map reveals how immune cells fight and remember infections. ScienceDaily. Retrieved July 21, 2024 from www.sciencedaily.com/releases/2020/10/201012115955.htm
Wellcome Trust Sanger Institute. "Novel map reveals how immune cells fight and remember infections." ScienceDaily. www.sciencedaily.com/releases/2020/10/201012115955.htm (accessed July 21, 2024).

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