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Partial FAM19A5 Deficiency in Mice Leads to Disrupted Spine Maturation, Hyperactivity, and an Altered Fear Response
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ABSTRACTThe FAM19A5polypeptide, encoded by the TAFA5gene, is evolutionarily conserved among vertebral species. This protein is predominantly expressed in the brain, highlighting its crucial role in the central nervous system. Here, we investigated the potential roles of FAM19A5in brain development and behavior using a FAM19A5-LacZ KI mouse model. This model exhibited a partial reduction in the FAM19A5protein level. FAM19A5-LacZ KI mice displayed no significant alterations in gross brain structure but alterations in dendritic spine distribution, with a bias toward immature forms. These mice also had lower body weights. Behavioral tests revealed that compared with their wild-type littermates, FAM19A5-LacZ KI mice displayed hyperactivity and a delayed innate fear response. These findings suggest that FAM19A5plays a role in regulating spine formation and maintenance, thereby contributing to neural connectivity and behavior.
Title: Partial FAM19A5 Deficiency in Mice Leads to Disrupted Spine Maturation, Hyperactivity, and an Altered Fear Response
Description:
ABSTRACTThe FAM19A5polypeptide, encoded by the TAFA5gene, is evolutionarily conserved among vertebral species.
This protein is predominantly expressed in the brain, highlighting its crucial role in the central nervous system.
Here, we investigated the potential roles of FAM19A5in brain development and behavior using a FAM19A5-LacZ KI mouse model.
This model exhibited a partial reduction in the FAM19A5protein level.
FAM19A5-LacZ KI mice displayed no significant alterations in gross brain structure but alterations in dendritic spine distribution, with a bias toward immature forms.
These mice also had lower body weights.
Behavioral tests revealed that compared with their wild-type littermates, FAM19A5-LacZ KI mice displayed hyperactivity and a delayed innate fear response.
These findings suggest that FAM19A5plays a role in regulating spine formation and maintenance, thereby contributing to neural connectivity and behavior.
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