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Baur K, Carrillo-García C, Şan Ş, von Hahn M, Strelau J, Hölzl-Wenig G, Mandl C, Ciccolini F. Growth/differentiation factor 15 controls ependymal and stem cell number in the V-SVZ. Stem Cell Reports 2024; 19:351-365. [PMID: 38366596 PMCID: PMC10937156 DOI: 10.1016/j.stemcr.2024.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 02/18/2024] Open
Abstract
The expression of growth/differentiation factor (GDF) 15 increases in the ganglionic eminence (GE) late in neural development, especially in neural stem cells (NSCs). However, GDF15 function in this region remains unknown. We report that GDF15 receptor is expressed apically in the GE and that GDF15 ablation promotes proliferation and cell division in the embryonic GE and in the adult ventricular-subventricular zone (V-SVZ). This causes a transient generation of additional neuronal progenitors, compensated by cell death, and a lasting increase in the number of ependymal cells and apical NSCs. Finally, both GDF15 receptor and the epidermal growth factor receptor (EGFR) were expressed in progenitors and mutation of GDF15 affected EGFR signaling. However, only exposure to exogenous GDF15, but not to EGF, normalized proliferation and the number of apical progenitors. Thus, GDF15 regulates proliferation of apical progenitors in the GE, thereby affecting the number of ependymal cells and NSCs.
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Affiliation(s)
- Katja Baur
- Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Carmen Carrillo-García
- Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Şeydanur Şan
- Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany; Sorbonne University, 21 Rue de l'École de Médecine, 75006 Paris, France
| | - Manja von Hahn
- Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Jens Strelau
- University of Heidelberg, Im Neuenheimer Feld 307, 69120 Heidelberg, Germany
| | - Gabriele Hölzl-Wenig
- Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Claudia Mandl
- Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Francesca Ciccolini
- Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany.
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