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Transcriptomic profile of the hippocampus of rat strains with contrasting nervous system excitability.

Overview

Authors: Marina Pavlova1, Irina Shalaginova1, Natalia Dyuzhikova1
  1. Pavlov Institute of Physiology of the Russian Academy of Sciences, Saint-Petersburg, Russia
Journal: PloS one, volume 21, issue 6, article e0350674
Dates: received 26 January 2026; accepted 16 May 2026; published online 3 June 2026
Type: Research article · Language: English
License: CC BY
Identifiers: DOI 10.1371/journal.pone.0350674 · PMID 42234683 · PMCID PMC13232848 · OpenAlex W7163448467
Open access: gold, a free copy (OpenAlex)
Status: data only
Categories: genetics / omics (modality), rat (organism), cellular / molecular (subfield)
Methods: Statistics, Smoothing, state filtering, decompositions, Preprocessing
MeSH: Hippocampus*, Transcriptome*, Animals, Gene Expression Profiling, Male, Neuronal Plasticity, Rats (* major topic)
Topic: Neurogenesis and neuroplasticity mechanisms (Developmental Neuroscience, Neuroscience), according to OpenAlex
Citations: not cited yet (Europe PMC); 79 references in the paper

Abstract

Individual variability of reactions to environmental influences which determines the range of the “reaction norm” and the possibilities of adaptation is strongly shaped by inherited properties of the nervous system, including genetically determined differences in excitability. Rat strains selectively bred for contrasting thresholds of neural system excitability provide a model for studying how such inherited differences are reflected at the molecular level. Here, we performed bulk RNA sequencing of the hippocampus in high-excitability (LT) and low-excitability (HT) rats to characterize baseline interstrain transcriptomic divergence. Differential expression analysis revealed strain-specific transcriptional profiles involving not only synapse- and plasticity-related genes, but also non-neuronal components associated with glial/immune functions, intracellular trafficking and protein processing, kinase signaling, extracellular matrix remodeling, and neurovascular regulation. Functional annotation highlighted differences in synaptic organization, neuronal projection development, cellular maintenance pathways, and tissue-level regulatory processes. The analysis motivates testable hypotheses involving synaptic/neurite organization, cellular maintenance pathways (MAPK/PI3K-linked trafficking and redox regulation), and glial/neurovascular components, to be evaluated in follow-up studies using structural and functional tissue-level measurements. This work also provides a reference for cross-model comparisons of polygenic excitability-related traits, as a reference transcriptomic profile from a long-term selective-breeding paradigm.

Reproduced under the paper's license (CC BY), from the paper cited above.

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Data

Datasets cited

Data Availability

All relevant data are within the manuscript and its Supporting information files. The raw and processed data in NCBI - GSE327807.

Reproduced under the paper's license (CC BY), from the paper cited above.

Versions

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Version 2, 28 September 2026

  • Funding: added Siberian Branch, Russian Academy of Sciences; Directorate for Biological Sciences; Russian Academy of Sciences: 1021062411629-7-3.1.4

Version 1, 27 September 2026: the first record

Recorded: type, language, journal, volume, issue, pages, dates, 3 authors, 7 MeSH terms, 78 references.

Cite

This paper

Pavlova, M., Shalaginova, I., & Dyuzhikova, N. (2026). Transcriptomic profile of the hippocampus of rat strains with contrasting nervous system excitability. PloS one, 21(6), e0350674. https://doi.org/10.1371/journal.pone.0350674

BibTeX

@article{pavlova2026transcriptomic,
author = {Pavlova, Marina and Shalaginova, Irina and Dyuzhikova, Natalia},
title = {{Transcriptomic profile of the hippocampus of rat strains with contrasting nervous system excitability}},
journal = {PloS one},
year = {2026},
month = jun,
volume = {21},
number = {6},
pages = {e0350674},
publisher = {PLOS},
issn = {1932-6203},
doi = {10.1371/journal.pone.0350674},
url = {https://doi.org/10.1371/journal.pone.0350674},
pmid = {42234683},
pmcid = {PMC13232848}
}

RIS

TY - JOUR
AU - Pavlova, Marina
AU - Shalaginova, Irina
AU - Dyuzhikova, Natalia
TI - Transcriptomic profile of the hippocampus of rat strains with contrasting nervous system excitability
T2 - PloS one
J2 - PLoS One
PY - 2026
DA - 2026/06/03
VL - 21
IS - 6
SP - e0350674
SN - 1932-6203
PB - PLOS
DO - 10.1371/journal.pone.0350674
UR - https://doi.org/10.1371/journal.pone.0350674
LA - en
ER -

CSL-JSON

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