Pikachurin Is Partially Involved in the Synaptic Connection Between Donor and Host Cells in Late-Stage rd1 Mice Following Conspecific Photoreceptor Transplantation
| Autor: | Zhen Yang, HuiFang Li, Ming Zou, Xiaoshuang Jiang, Lanya Peng, Chen Liang, Yingying Chen |
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| Rok vydání: | 2020 |
| Předmět: |
Cell Transplantation
Nerve Tissue Proteins Synapse Mice medicine Animals Photoreceptor Cells Cyclic Nucleotide Phosphodiesterases Type 6 Retina biology Host (biology) Retinal Degeneration Late stage food and beverages Cell Biology Hematology eye diseases Connection (mathematics) Mice Inbred C57BL Transplantation surgical procedures operative medicine.anatomical_structure Mutation Synapses biology.protein Pikachurin Retinal function sense organs Carrier Proteins Neuroscience Developmental Biology |
| Zdroj: | Stem Cells and Development. 29:786-794 |
| ISSN: | 1557-8534 1547-3287 |
| DOI: | 10.1089/scd.2019.0268 |
| Popis: | Photoreceptor transplantation can rescue the retinal function of late-stage rd1 mice. Many studies have used synaptic markers to suggest that there are synaptic connections after transplantation, but how donor and host cells are connected remains unknown. Many molecules are needed for triad ribbon synapse formation in wild-type mice. Among them, pikachurin is an important extracellular matrix protein that bridges the pre- and postsynaptic components. To investigate the mechanism of the synaptic connection between donor photoreceptor and host retina, we studied the expression of pikachurin in late-stage rd1 mice before and after transplantation. The results showed that the full-length form of pikachurin could still be detected in the degenerated retina. After photoreceptors were transplanted to the subretinal space of rd1 or wild-type mice, pikachurin was detected in the cytoplasm of most donor photoreceptor cells. Pikachurin puncta may represent the cleaved form of the protein and may indicate synapse generation, but it was barely observed in the donor mass of wild-type mice (3.83 ± 3.17 puncta per 100 donor cells). In contrast, pikachurin puncta could be found in the graft of the rd1 mouse retina, but the number was low (21.35 ± 9.48 puncta per 100 donor cells). In addition, 54.12 ± 8.45% of bassoon puncta were paired with pikachurin puncta and 45.5 ± 6.33% were not, indicating that there were fewer pikachurin puncta than bassoon. These results suggest that pikachurin is involved in only a portion of the synaptic connection between the donor photoreceptor and host retina. |
| Databáze: | OpenAIRE |
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