Evidence map›Paper›PMID 19005468›Full record

ArticleNature2009

Memory CD8 T-cell compartment grows in size with immunological experience.

Vaiva Vezys, Andrew Yates, Kerry A Casey, Gibson Lanier, Rafi Ahmed, Rustom Antia, David Masopust

Registry-linked trialOpen access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Nature, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01479296 (A Phase 1b Randomized Double-Blind Clinical Trial to Examine Whether Polytopic Administration of VRC rAd5 Gag-pol/Env A/B/C Vaccine Enhances HIV-Specific Cellular Immune Responses in Humans), which is not on this map. Cited by 144 papers.

0numbers the graph read from it
0cells of the map it votes in
144citing papers in PubMed
6.4field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT01479296 phase1completednot on this mapstarted 2011, after this paper: background citation

A Phase 1b Randomized Double-Blind Clinical Trial to Examine Whether Polytopic Administration of VRC rAd5 Gag-pol/Env A/B/C Vaccine Enhances HIV-Specific Cellular Immune Responses in Humans

TypeinterventionalSponsorNational Institute of Allergy and Infectious Diseases (NIAID)Ran2011 to 2017Enrolled90ConditionsHIV InfectionsArmsVRC rAd5 vaccine (rAd5 gag-pol/env A/B/C), rAd5 env A, rAd5 env B, rAd5 env C, rAd5 gag-pol
3 · Its place in the literature

Who cites it

144 citing papers in PubMed, 218 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Trial
  4. Trial
  5. Article
  6. Article
  7. When does humoral memory enhance infection?PLoS computational biology · 2023
    Article
  8. Article
  9. Review
  10. COVID-19 Alpha Variant (B.1.1.7): Humoral, memory B and T cells in COVID-19 pediatric convalescents.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2022
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Considerations of CD8Frontiers in immunology · 2022
    Review
  16. Review
  17. Memory CD8Immunology · 2021
    Article
  18. Article
  19. Article
  20. Article

84 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Vaiva VezysDepartment of Microbiology and Center for Immunology, University of Minnesota, Minneapolis, Minnesota 55455, USA.
Andrew Yates
Kerry A Casey
Gibson Lanier
Rafi Ahmed
Rustom Antia
David Masopust
Emory University · USUniversity of Minnesota · US

Funding

T CELL MEMORY TO VIRUSESR01AI030048 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI AHMED, RAFI · 1990 to 2022
$5.2M
T CELL MEMORY TO VIRUSESR37AI030048 · NIAID · EMORY UNIVERSITY · PI AHMED, RAFI · 2001 to 2010
$3.9M
NIAID NIH HHS AI30048
6 · The paper itself

Abstract

Memory CD8 T cells, generated by natural pathogen exposure or intentional vaccination, protect the host against specific viral infections. It has long been proposed that the number of memory CD8 T cells in the host is inflexible, and that individual cells are constantly competing for limited space. Consequently, vaccines that introduce over-abundant quantities of memory CD8 T cells specific for an agent of interest could have catastrophic consequences for the host by displacing memory CD8 T cells specific for all previous infections. To test this paradigm, we developed a vaccination regimen in mice that introduced as many new long-lived memory CD8 T cells specific for a single vaccine antigen as there were memory CD8 T cells in the host before vaccination. Here we show that, in contrast to expectations, the size of the memory CD8 T-cell compartment doubled to accommodate these new cells, a change due solely to the addition of effector memory CD8 T cells. This increase did not affect the number of CD4 T cells, B cells or naive CD8 T cells, and pre-existing memory CD8 T cells specific for a previously encountered infection were largely preserved. Thus, the number of effector memory CD8 T cells in the mammalian host adapts according to immunological experience. Developing vaccines that abundantly introduce new memory CD8 T cells should not necessarily ablate pre-existing immunity to other infections.

Indexed as

Lymphocyte CountAnimalsB-LymphocytesCD4-Positive T-LymphocytesCD8-Positive T-LymphocytesCells, CulturedHyaluronan ReceptorsImmunodominant EpitopesImmunologic MemoryL-SelectinLymphocytic choriomeningitis virusMiceMice, Inbred C57BLVaccinationViral VaccinesCd44 protein, mouseHyaluronan ReceptorsImmunodominant EpitopesL-SelectinViral Vaccines

Identifiers

PMID19005468
OpenAlexW2144439874

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.