The invention discloses application of m6A
demethylase FTO in pituitary endocrine tumors, and belongs to the technical field of biological
medicine. Compared with the DGGH, the m6A level in the SGGH is obviously reduced, and the expression of m6A
demethylase FTO in the SGGH subtype is increased. Inhibition of FTO in
tumor cells significantly reduces hypoxia tolerance, weakens
secretion of
growth hormone, and enhances sensitivity to
octreotide. The FTO-mediated m6A
demethylation is unstable through DSP mRNA mediated by an m6A reader FMR1, so that the integrity of a
desmosome structure is damaged, and the
tumor hypoxia tolerance is enhanced. In the prior art, the targeted FTO-DSP-SSTR2 axis reduces
growth hormone secretion, so that tumors are sensitive to
octreotide treatment, the invention reveals the key effect of FTO in invasive
growth hormone adenoma subtypes, and indicates that FTO may be used as a new treatment target of intractable / persistent SGGH.