PLXDC1 May Serve As A Target For Combining Antiangiogenic Therapy and Immunotherapy In Gastric Adenocarcinoma
Abstract Introduction Based on the immunosuppression of traditional antiangiogenic agents in the treatment of tumors and the newly proposed concept of antiangiogenic therapy combined with immunotherapy, this paper will mainly explore the prospects of PLXDC1 in stomach adenocarcinoma (STAD) regarding antiangiogenic therapy and immunotherapy.Methods First, the transcriptional and translational levels of PLXDC1 in STAD were analyzed using the Oncomine, The Cancer Genome Atlas (TCGA) and Human Protein Atlas databases and then univariate and multivariate Cox regression analyses were performed using TCGA data. Next, we explored the correlation between PLXDC1 and STAD immunity from multiple aspects. Finally, based on the acquisition of immunomodulators associated with PLXDC1 expression from TISIDB, we constructed PLXDC1-related immune prognostic signatures of four genes (NT5E, CTLA, TGFBR1, and CSF1R) and constructed a nomogram for predicting survival to analyze the clinical utility of PLXDC1 in immunotherapy.Results Our results demonstrated that PLXDC1 was highly expressed in STAD and that its high expression was associated with poor prognosis in STAD. Multivariate Cox analysis suggested that PLXDC1 could be used as an independent prognostic risk factor for STAD. The high-risk group for which we constructed PLXDC1-related immune prognostic signatures showed poorer prognosis compared to low-risk group, and the risk score of our model could be used as an independent risk factor for STAD prognosis. Moreover, the nomogram survival prediction system showed good accuracy of the constructed immune signatures.Conclusions In conclusion, PLXDC1 can serve as a biomarker for the diagnosis and treatment of STAD and it may also be a new target for STAD immunotherapy. Therefore, PLXDC1 can combine antiangiogenic therapy with immunotherapy.