Evidence map›Paper›PMID 41630050›Full record

ArticleBiology of sex differences2026

Expression atlas of Dmrt genes across sex and development in the mouse brain: functional insights from the olfactory system.

Rafael Casado-Navarro, Ana Bermejo-Santos, Rodrigo Torrillas-de la Cal, María Pilar Madrigal, Virgilia Olivé, Li Ying Chen-Chen, Sonia Amorós-Bru, Sandra Jurado, Esther Serrano-Saiz

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Article in Biology of sex differences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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2citing papers in PubMed
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1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Rafael Casado-NavarroCentro de Biología Molecular Severo Ochoa (CBM), Spanish National Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain.
Ana Bermejo-SantosCentro de Biología Molecular Severo Ochoa (CBM), Spanish National Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain.
Rodrigo Torrillas-de la CalCentro de Biología Molecular Severo Ochoa (CBM), Spanish National Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain.
María Pilar MadrigalUniversidad Miguel Hernández, Elche, Spain.
Virgilia OlivéCentro de Biología Molecular Severo Ochoa (CBM), Spanish National Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain.
Li Ying Chen-ChenCentro de Biología Molecular Severo Ochoa (CBM), Spanish National Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain.
Sonia Amorós-BruUniversidad Miguel Hernández, Elche, Spain.
Sandra JuradoInstituto de Neurociencias (UMH-CSIC), Alicante, Spain.
Esther Serrano-SaizCentro de Biología Molecular Severo Ochoa (CBM), Spanish National Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain. eserrano@cbm.csic.es.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The ancient DMRT family of transcription factors has been proposed as evolutionarily conserved effectors of sexual differentiation. While brain sexual differentiation has traditionally been attributed to a paracrine role of steroid hormones and intrinsic cues directly controlled by sex chromosomes, the downstream effector mechanisms remain elusive. To elucidate the role of Dmrts in mammalian brain sexual differentiation, we generated a comprehensive expression atlas for all family members in the mouse brain using in situ hybridization across sexes and development (E12.5, E14.5, E18.5, adulthood and, sometimes, P7). We found that all Dmrts, except Dmrt7, were expressed in the brain. This study expands understanding of the DMA-Dmrt subfamily beyond pallial structures and identifies their expression maintenance in adult neurogenic sites. For the first time, we described the neuronal expression of Dmrt2 and Dmrt6. Mouse Dmrts did not show clear sexually dimorphic patterns, but did show quantitative expression differences between sexes. Most Dmrts were maintained in postmitotic neurons during embryonic and postnatal stages, suggesting potential interactions with gonadal sex hormones during organizational (perinatally, with testosterone peaking at E18.5 in males) and activational phases (after puberty, with androgens in males and estrogens in females). Our analysis of Dmrt5 expression revealed its prominent presence in the mouse olfactory system. The olfactory system shows sex differences and is fundamental for controlling sex-specific innate behaviors in rodents. Thus, it represents an ideal scenario to test, as a proof of concept, the role of Dmrts in the sexual differentiation of the mammalian brain. The absence of Dmrt5 similarly affected the main olfactory epithelium, where sensory neurons reside, in both sexes; however, cell number-related defects in the olfactory bulb and piriform cortex differed between male and female embryos, revealing Dmrt5 interaction with sex in deeper layers of innate neural circuits. Our results provide a valuable resource for uncovering novel sites and mechanisms of sexual differentiation in the mammalian nervous system, potentially contributing to sex biases observed in psychiatric and neurological disorders.

Indexed as

BrainGene Expression Regulation, DevelopmentalOlfactory PathwaysSex CharacteristicsTranscription FactorsAnimalsFemaleMaleMiceMice, Inbred C57BLSex DifferentiationTranscription Factors

Identifiers

PMID41630050
PMCPMC12955159

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LicenceCC BY
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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.