Oliver's mTOR Atlas Evidence Platform
Reading level
Mode

Translational repression of 5' TOP mRNAs in chronically activated CD8+ T cells.

Pledger ES, Ambavaram N, Ferguson L, Cate JHD · 2026 · RNA biology · Atlas ID PLEDGER2026

What this study shows

Ribosome profiling of exhausted human CD8+ T cells reveals marked repression of 5'TOP mRNAs despite elevated mTOR activity, uncovering an mTOR-independent translational control mechanism in T cell exhaustion.

Abstract

ShowHide

T cell exhaustion is a dysfunctional state that arises during chronic infections and cancer, characterized by impaired effector functions and sustained expression of inhibitory receptors. We performed ribosome profiling and RNA sequencing on chronically activated human CD8+ T cells to globally assess translational control during a model of T cell exhaustion. Our analyses reveal a marked repression of 5' terminal oligopyrimidine (TOP) mRNAs during chronic activation. Unexpectedly, we demonstrate that this translational repression occurs despite evidence of elevated mTOR activity.

Read the full abstract on PubMed →

At a glance

Evidence type M Molecular — cells, biochemistry, structure Marked M because it is molecular or in-vitro work (model: Human (CD8+ T cells in vitro)) rather than a whole-organism health-outcome study. That is often exactly where causal biology gets established -- the code says which system the finding was shown in, and nothing about how good the work is.
Study type5 - Mechanistic / In Vitro
Model systemHuman (CD8+ T cells in vitro)
JournalRNA biology
Year2026
Peer reviewedYes
Record last updated2026-08-22
SourceDOI 10.1080/15476286.2026.2715355 · PMID 42558000 · Free full text (PMC13479822)

Extracted findings

InterventionChronic T cell activation
TargetmTOR / 5'TOP mRNA translation
ModelHuman
Effect5'TOP mRNAs repressed despite elevated mTOR activity in exhausted CD8+ T cells

In the Atlas

Related topics

5'TOP mRNA

More studies on this topic

Cite this paper

ShowHide
Pledger, E. S., Ambavaram, N., Ferguson, L., & Cate, J. H. D. (2026). Translational repression of 5' TOP mRNAs in chronically activated CD8+ T cells. RNA biology. https://doi.org/10.1080/15476286.2026.2715355

@article{PLEDGER2026,
  author       = {Pledger, E. S. and Ambavaram, N. and Ferguson, L. and Cate, J. H. D.},
  title        = {{Translational repression of 5' TOP mRNAs in chronically activated CD8+ T cells}},
  journal      = {RNA biology},
  year         = {2026},
  doi          = {10.1080/15476286.2026.2715355},
  note         = {PMID: 42558000},
}

Cite this Atlas record

The record is the Atlas's own work — the evidence label, the extracted findings and the links. It is cited as part of the dataset, not as the paper.

Barton, O. (2026). Oliver's mTOR Atlas (record PLEDGER2026) [Data set]. https://mtor-atlas.org/study/PLEDGER2026/ · Dataset DOI 10.5281/zenodo.22059963

@misc{atlas_PLEDGER2026,
  author       = {Barton, Oliver},
  title        = {{Oliver's mTOR Atlas}, record PLEDGER2026},
  howpublished = {Data set},
  year         = {2026},
  url          = {https://mtor-atlas.org/study/PLEDGER2026/},
  doi          = {10.5281/zenodo.22059963}
}