The application discloses application of PAK4 inhibitor comp55 in preparation of a
medicine for inhibiting formation of tumor-related fibroblasts, and belongs to the technical field of
medicine application. The application first proposes the application of PAK4 inhibitor comp55 in preparation of the
medicine for inhibiting formation of tumor-related fibroblasts, and provides a new scheme for the medicine for inhibiting formation of tumor-related fibroblasts. The application first proposes that PAK4 inhibitor comp55 inhibits formation of CAFs by targeting PAK4. The application first proposes that PAK4 inhibitor comp55 and
vitamin D analogues are used in combination to synergistically inhibit formation of CAFs. The application first proposes that PAK4 inhibitor comp55 and anti-PD-1 antibodies are used in combination to synergistically inhibit formation of CAFs. The application first proposes that PAK4 inhibitor comp55,
vitamin D analogues and anti-PD-1 antibodies are used in combination to significantly inhibit
tumor growth, inhibit formation of CAFs, promote CD8 +
T cell infiltration and IFN-gamma
secretion.