Peritoneal
metastasis from
colorectal cancer (CRC) is related to poor prognosis. Intraperitoneal
chemotherapy is an efficient method to treat peritoneal
metastasis (PM); however, the outcomes remain unsatisfactory. The present study aimed to investigate the antitumor activity of
lobaplatin and its role in intraperitoneal
chemotherapy. The findings showed that the proliferation of CRC was inhibited in a dose-dependent manner when DLD1 and HCT116 cells were treated with various concentrations of
lobaplatin (0, 6.3, 12.5, 25, 50, and 100 μg/mL, respectively). Flow cytometry and Western blot analysis confirmed that
lobaplatin affected CRC cells by inducing apoptosis and modulating the
caspase family. In the animal study, nude mice were injected with DLD1 cells and divided into three groups.
Lobaplatin was injected intraperitoneally to simulate intraperitoneal
chemotherapy. Group A was the control group treated with PBS. Group B was injected with DLD1 and treated with
lobaplatin simultaneously, while group C was treated with
lobaplatin 1 week after cell injection. The results showed that group A harbored maximal
tumors on the peritoneal surface, while group B had the least number (9.2 ± 1.3 and 0.4 ± 0.5, respectively P < 0.01). These findings indicated that
lobaplatin suppressed the
tumor growth as an intraperitoneal
chemotherapy agent and achieved a satisfactory
therapeutic effect at an early stage. Further blood test and tissue staining did not reveal any liver and kidney toxicity that was induced by
lobaplatin. In conclusion,
lobaplatin could be an effective and safe agent for CRC treatment, thereby commissioning a novel strategy in intraperitoneal
chemotherapy for patients with peritoneal
metastasis.