ACP3 and fibrosarcoma: Similarly, the Mei group conjugated o-nitrobenzyl photocages to the lysine residues of a Penetratin derived CPP and coated these onto liposomes loaded with anticancer agent Vinorelbine (VB, Table 3, entry 6).61 Two-photon NIR light activation (λ = 740 nm, 30 min) of the ACPP-coated liposomes resulted in uptake into human fibrosarcoma cells accompanied by a decreased viability and indicating that cargo could be delivered effectively.