A secretory protein neudesin regulates splenic red pulp macrophages in erythrophagocytosis and iron recycling
Abstract Neudesin, originally identified as a neurotrophic factor, has primarily been studied for its neural functions despite its widespread expression. Using 8-week-old neudesin knockout mice, we elucidated the role of neudesin in the spleen. The absence of neudesin caused mild splenomegaly, short...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-01-01
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| Series: | Communications Biology |
| Online Access: | https://doi.org/10.1038/s42003-024-05802-9 |
| _version_ | 1797276348110077952 |
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| author | Yoshiaki Nakayama Yuki Masuda Takehiro Mukae Tadahisa Mikami Ryohei Shimizu Naoto Kondo Hiroshi Kitagawa Nobuyuki Itoh Morichika Konishi |
| author_facet | Yoshiaki Nakayama Yuki Masuda Takehiro Mukae Tadahisa Mikami Ryohei Shimizu Naoto Kondo Hiroshi Kitagawa Nobuyuki Itoh Morichika Konishi |
| author_sort | Yoshiaki Nakayama |
| collection | DOAJ |
| description | Abstract Neudesin, originally identified as a neurotrophic factor, has primarily been studied for its neural functions despite its widespread expression. Using 8-week-old neudesin knockout mice, we elucidated the role of neudesin in the spleen. The absence of neudesin caused mild splenomegaly, shortened lifespan of circulating erythrocytes, and abnormal recovery from phenylhydrazine-induced acute anemia. Blood cross-transfusion and splenectomy experiments revealed that the shortened lifespan of erythrocytes was attributable to splenic impairment. Further analysis revealed increased erythrophagocytosis and decreased iron stores in the splenic red pulp, which was linked to the upregulation of Fcγ receptors and iron-recycling genes in neudesin-deficient macrophages. In vitro analysis confirmed that neudesin suppressed erythrophagocytosis and expression of Fcγ receptors through ERK1/2 activation in heme-stimulated macrophages. Finally, we observed that 24-week-old neudesin knockout mice exhibited severe symptoms of anemia. Collectively, our results suggest that neudesin regulates the function of red pulp macrophages and contributes to erythrocyte and iron homeostasis. |
| first_indexed | 2024-03-07T15:27:59Z |
| format | Article |
| id | doaj.art-a1416c4ad5ca4cb78fc60640b2cf62fd |
| institution | Directory Open Access Journal |
| issn | 2399-3642 |
| language | English |
| last_indexed | 2024-03-07T15:27:59Z |
| publishDate | 2024-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Biology |
| spelling | doaj.art-a1416c4ad5ca4cb78fc60640b2cf62fd2024-03-05T16:38:36ZengNature PortfolioCommunications Biology2399-36422024-01-017111110.1038/s42003-024-05802-9A secretory protein neudesin regulates splenic red pulp macrophages in erythrophagocytosis and iron recyclingYoshiaki Nakayama0Yuki Masuda1Takehiro Mukae2Tadahisa Mikami3Ryohei Shimizu4Naoto Kondo5Hiroshi Kitagawa6Nobuyuki Itoh7Morichika Konishi8Laboratory of Microbial Chemistry, Kobe Pharmaceutical UniversityLaboratory of Microbial Chemistry, Kobe Pharmaceutical UniversityLaboratory of Microbial Chemistry, Kobe Pharmaceutical UniversityLaboratory of Biochemistry, Kobe Pharmaceutical UniversityLaboratory of Microbial Chemistry, Kobe Pharmaceutical UniversityLaboratory of Microbial Chemistry, Kobe Pharmaceutical UniversityLaboratory of Biochemistry, Kobe Pharmaceutical UniversityKyoto University Graduate School of Pharmaceutical ScienceLaboratory of Microbial Chemistry, Kobe Pharmaceutical UniversityAbstract Neudesin, originally identified as a neurotrophic factor, has primarily been studied for its neural functions despite its widespread expression. Using 8-week-old neudesin knockout mice, we elucidated the role of neudesin in the spleen. The absence of neudesin caused mild splenomegaly, shortened lifespan of circulating erythrocytes, and abnormal recovery from phenylhydrazine-induced acute anemia. Blood cross-transfusion and splenectomy experiments revealed that the shortened lifespan of erythrocytes was attributable to splenic impairment. Further analysis revealed increased erythrophagocytosis and decreased iron stores in the splenic red pulp, which was linked to the upregulation of Fcγ receptors and iron-recycling genes in neudesin-deficient macrophages. In vitro analysis confirmed that neudesin suppressed erythrophagocytosis and expression of Fcγ receptors through ERK1/2 activation in heme-stimulated macrophages. Finally, we observed that 24-week-old neudesin knockout mice exhibited severe symptoms of anemia. Collectively, our results suggest that neudesin regulates the function of red pulp macrophages and contributes to erythrocyte and iron homeostasis.https://doi.org/10.1038/s42003-024-05802-9 |
| spellingShingle | Yoshiaki Nakayama Yuki Masuda Takehiro Mukae Tadahisa Mikami Ryohei Shimizu Naoto Kondo Hiroshi Kitagawa Nobuyuki Itoh Morichika Konishi A secretory protein neudesin regulates splenic red pulp macrophages in erythrophagocytosis and iron recycling Communications Biology |
| title | A secretory protein neudesin regulates splenic red pulp macrophages in erythrophagocytosis and iron recycling |
| title_full | A secretory protein neudesin regulates splenic red pulp macrophages in erythrophagocytosis and iron recycling |
| title_fullStr | A secretory protein neudesin regulates splenic red pulp macrophages in erythrophagocytosis and iron recycling |
| title_full_unstemmed | A secretory protein neudesin regulates splenic red pulp macrophages in erythrophagocytosis and iron recycling |
| title_short | A secretory protein neudesin regulates splenic red pulp macrophages in erythrophagocytosis and iron recycling |
| title_sort | secretory protein neudesin regulates splenic red pulp macrophages in erythrophagocytosis and iron recycling |
| url | https://doi.org/10.1038/s42003-024-05802-9 |
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