This invention discloses the application of the FAM26F
gene in the diagnosis and treatment of depression, belonging to the interdisciplinary field of
molecular biology and neuropsychiatry. This invention reveals for the first time that downregulation of the FAM26F
gene expression disrupts glutamate
homeostasis by affecting the expression of glutamate transporters and receptors, thereby leading to depressive-like behaviors. Based on this, this invention provides two core applications: first, the application of the FAM26F
gene in the preparation of diagnostic products for depression, achieving objective diagnosis by detecting the expression level of this gene in samples such as
peripheral blood; second, the application of the FAM26F gene in the preparation of therapeutic drugs for depression, wherein the
drug uses a gene therapy vector that upregulates the expression of this gene as its
active ingredient, and is administered via lateral
ventricle injection or nasal nebulization, effectively reversing depressive-like behaviors in animal models. This invention provides a novel, precise diagnostic target and targeted
treatment strategy for depression.