Abstract
Gonadal sex determination represents a unique model for studying cell fate decisions. However, a complete understanding of the different cell lineages forming the developing testis and ovary remains elusive. Here, we investigated the origin, specification, and subsequent sex-specific differentiation of a previously uncharacterized population of supporting-like cells (SLCs) in the developing mouse gonads. The SLC lineage is closely related to the coelomic epithelium and specified as early as E10.5, making it the first somatic lineage to be specified in the bipotential gonad. SLC progenitors are localized within the genital ridge at the interface with the mesonephros and initially coexpress Wnt4 and Sox9. SLCs become sexually dimorphic around E12.5, progressively acquire a more Sertoli- or pregranulosa-like identity and contribute to the formation of the rete testis and rete ovarii. Last, we found that WNT4 is a crucial regulator of the SLC lineage and is required for normal development of the rete testis.
| Original language | English |
|---|---|
| Article number | eabm0972 |
| Journal | Science advances |
| Volume | 8 |
| Issue number | 21 |
| DOIs | |
| State | Published - 27 May 2022 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:Copyright © 2022 The Authors, some rights reserved.
Funding
Swiss National Science Foundation grant 31003A_173070 (S.N.), Swiss National Science Foundation grant 310030_200316 (S.N.), Département de l'Instruction Publique of the State of Geneva (S.N.), Agence Nationale de la Recherche grant ANR-19-CE14-0022-01 SexDiff (M.-C.C.), UK Medical Research Council grant MC_U142684167 (A.G.), National Institutes of Health grant 1R01HD090050 (B.C. and C.B.), and National Institutes of Health grant R37HD039963 (B.C.). N.B.G. and C.D. were supported by grants from Agence Nationale de la Recherche (ANR-16-CE14-0017 and ANR-20-CE14-0022).
| Funders | Funder number |
|---|---|
| Département de l'Instruction Publique of the State of Geneva | |
| National Institutes of Health | ANR-20-CE14-0022, ANR-16-CE14-0017, 1R01HD090050 |
| National Institute of Child Health and Human Development | R01HD039963 |
| Medical Research Council | MC_U142684167 |
| Agence Nationale de la Recherche | ANR-19-CE14-0022-01 |
| Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung | 310030_200316, 31003A_173070 |
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