Recent Publications Harnessing the Power of Translatomics

Every week we provide a digest of a small number of recent interesting papers in the field of translatomics.

In this week’s Sunday papers,

  • Riquelme-Barrios et al. provide the first comprehensive map of the Escherichia coli epitranscriptome under heat stress.
  • Liu et al. perform a massive meta-analysis of Ribo-seq and matched RNA-seq datasets and introduce the concept of translation efficiency covariation.
  • Bai et al. delineate the translational landscape of Arabidopsis thaliana across five distinct stages of germination.
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Direct RNA sequencing of the Escherichia coli epitranscriptome uncovers alterations under heat stress

Nucleic Acids Research, 2025

Riquelme-Barrios, S., Vásquez-Camus, L., Cusack, S.A., Burdack, K., Petrov, D.P., Yeşiltaç-Tosun, G.N., Kaiser, S., Giehr, P. and Jung, K.

Sunday Paper 1

While RNA modifications are well-characterized in eukaryotes, their regulatory roles in prokaryotes, particularly in mRNA, have remained elusive due to technical limitations in detecting low-abundance modifications across the entire transcriptome. This study provides the first comprehensive map of the Escherichia coli epitranscriptome under heat stress. The researchers aimed to establish a systematic approach using Oxford Nanopore Technologies direct RNA sequencing (DRS) to simultaneously monitor multiple modification types in rRNA, tRNA, and mRNA. Their goal was to determine how the epitranscriptome landscape shifts when E. coli transitions from 37°C to heat stress (45°C), testing the hypothesis that RNA modifications serve as a rapid, post-transcriptional layer of stress regulation. The study integrated DRS with mass spectrometry and mutation analysis to validate their findings.

Under heat stress, levels of m5C, m6A, and m6,6A significantly increased in the 16S rRNA. These changes were concentrated in the decoding center, suggesting a structural remodeling of the ribosome to maintain translational fidelity or efficiency during thermal stress. They identified a decrease in tRNA modification abundance within the anticodon loop at 45°C. For example, dihydrouridine levels dropped, likely to modulate tRNA flexibility which naturally increases with temperature. They also revealed a functional shift in modified mRNAs. At 37°C, modifications were enriched in genes for general metabolism and RNA processing. Under heat stress, this shifted toward transcripts involved in cell wall synthesis and membrane transport, suggesting that epitranscriptomic marks help prioritize the translation of stress-survival proteins.

By providing a “blueprint” for bacterial epitranscriptomics, this work demonstrates that RNA modifications are dynamic sensors that fine-tune the bacterial translation machinery in response to environmental flux.

Learn more about EIRNABio’s ribosome profiling services here.

Translation efficiency covariation identifies conserved coordination patterns across cell types

Nature Biotechnology, 2025

Liu, Y., Rao, S., Hoskins, I., Geng, M., Zhao, Q., Chacko, J., Ghatpande, V., Qi, K., Persyn, L., Wang, J., Zheng, D., Zhong, Y., Park, D., Sarinay Cenik, E., Agarwal, V., Ozadam, H., and Cenik, C.

Sunday Paper 2

While gene co-expression networks at the mRNA level are well-established, we lack a global understanding of how translation efficiency (TE) is coordinated across the transcriptome. To date, most ribosome profiling (Ribo-seq) studies have been limited to small sample sizes or specific conditions, failing to capture how TE varies across diverse biological contexts. The authors sought to determine if there is an underlying “organizing principle” for translation, similar to transcriptional co-expression, and whether this coordination is evolutionarily conserved. By performing a massive meta-analysis of 3,819 Ribo-seq and matched RNA-seq datasets from 117 human and 94 mouse tissues/cell lines, the study introduces the concept of translation efficiency covariation (TEC).

Groups of genes were identified whose translation efficiencies change in a coordinated fashion across different cell types and conditions. These TEC networks are distinct from mRNA co-expression networks, suggesting that translational coordination is governed by independent regulatory mechanisms. Genes within the same TEC modules often share physical protein-protein interactions or belong to the same metabolic pathways, even when their mRNA levels do not correlate. A major finding was that TEC patterns are remarkably conserved between humans and mice. This conservation suggests that coordinated translational control is a fundamental feature of mammalian gene expression. Ribo-seq data revealed that TEC can act as a “buffer” to maintain stable protein output despite fluctuations in transcript levels, or conversely, to rapidly amplify protein synthesis for specific functional demands.

In summary, the study leverages large-scale Ribo-seq data to redefine the mammalian translatome not as a series of isolated events, but as a highly organized, evolutionarily conserved network of coordinated efficiency.

Learn more about EIRNABio’s ribosome profiling services here.

Translational landscape during seed germination revealed by ribosome profiling

The Plant Journal, 2026

Bai, B., Qi, R., Song, W., Nijveen, H. and Bentsink, L.

Sunday Paper 3

Successful seed germination is the physiological foundation of agricultural productivity, as the efficiency of this transition directly dictates seedling vigor and ultimate crop yield. Recent evidence reveals that germination is a highly orchestrated process governed by translational regulation. High-resolution Ribo-seq is used to delineate the translational landscape of Arabidopsis thaliana across five distinct stages of germination. By decoupling the translatome from the transcriptome, the authors demonstrate that the transition from a dry, quiescent seed to an active seedling is governed by precise translational control mechanisms rather than just transcript abundance.

The Ribo-seq data reveals that dry seeds exist in a “poised” state. Ribosomes are not absent; rather, they are stalled at start codons and within 5′ UTRs. This stalling is strongly associated with an adenine-enriched motif immediately downstream of the AUG, suggesting a sequence-specific mechanism that prevents elongation until imbibition triggers the release of these stagnant complexes.As translation resumes post-imbibition, ribosome movement is non-uniform. The study identified significant ribosomal pausing at codons for glycine, aspartate, tyrosine, and proline. This indicates that the rate-limiting step of early germination may be linked to the availability of specific charged tRNAs or the metabolic flux of these particular amino acids.

The researchers identified a high prevalence of upstream open reading frames (uORFs) that act as “cis-evolutionary” switches. These uORFs sequester ribosomes, effectively downregulating the translation of downstream primary open reading frames involved in ABA signaling and dormancy maintenance. Furthermore, Ribo-seq footprints were detected on transcripts previously annotated as long non-coding RNAs. These regions exhibit the characteristic 3-nucleotide periodicity of active translation, suggesting the synthesis of small functional peptides that likely play uncharacterized regulatory roles during the “rebooting” phase.

Learn more about EIRNABio’s ribosome profiling services here.