The present invention relates to the use of
nucleotide synthesis pathway inhibitors and macropinocytosis inhibitors for the treatment of tumors. The present disclosure provides the use of
nucleotide synthetic pathway inhibitors and macropinocytosis inhibitors in the preparation of medicaments or kits for the treatment of tumors, where the
nucleotide synthetic pathway inhibitors may include
pyrimidine and / or
purine synthetic pathway inhibitors such as orotic
dehydrogenase (DHODH) inhibitors and phosphoribose
pyrophosphate synthetase 1 (PRPS) inhibitors, the macropinocytosis inhibitor can comprise a macropinocytosis substrate uptake inhibitor, a PAK1 inhibitor, an EGFR
signal pathway inhibitor, an
ErbB signal pathway inhibitor, an NF-KB
signal pathway inhibitor, an EREG inhibitor, a p65 inhibitor and an AREG inhibitor. The invention discloses a new way for activating macropinocytosis by using
intracellular signals, provides a new insight for a regulation mechanism in
tumor cells, and provides a new method for tumor treatment.