Folate Receptor (FR) (叶酸受体 (FR))

Folate receptor (FR) is a class of cysteine-rich glycosylphosphatidylinositol-coupled protein that can mediate folate transport from outside to inside cells, and is divided into FR-α, FR-β, and FR-γ Subtypes. FR-α is expressed in renal proximal tubules and in various solid epithelial neoplasms (ovary, endometrium, brain, lung, and renal cancers). FR-β is expressed in normal hematopoietic tissue, activated macrophages, and hematogenous malignancies. Folate receptor can be used for the early diagnosis and study of tumors^[1]sup>[2].