Gastric carcinoma (GC) remains a major global health challenge, requiring novel therapeutic approaches. This study investigates the efficacy of self-assembled M2pep-Cs NPs/Plerixafor nanoparticles in suppressing GC by targeting the CXCL12-CXCR4 signaling pathway and reprogramming tumor-associated macrophages (TAMs) to enhance anti-tumor immunity. The nanoparticles' physicochemical properties and biocompatibility are assessed using transmission electron microscopy, dynamic light scattering, and biological assays. A GC mouse model is established, followed by histological and immunohistochemical analyses to evaluate tumor apoptosis and proliferation. Multi-omics approaches, including transcriptomics, proteomics, and metabolomics, identify key genes and pathways affected by treatment. Flow cytometry and ELISA quantify immune activation markers; while, cell migration and invasion assays evaluate tumor suppression effects. The results demonstrate that M2pep-Cs NPs/Plerixafor effectively modulates the tumor microenvironment, suppressing GC progression by reprogramming TAMs through CXCL12-CXCR4 inhibition, enhancing immune recognition and T cell responses. This study provides mechanistic insights and highlights the potential of nanoparticle-based immunotherapy for GC, offering a promising avenue for clinical translation.
Keywords: CXCL12–CXCR4 signaling pathway; M2pep‐Cs NPs/plerixafor nanoparticles; gastric carcinoma; immunotherapy; macrophage reprogramming.
© 2025 The Author(s). Advanced Science published by Wiley‐VCH GmbH.