AUTHOR=Li Mingzhu , Li Ningxin , Piao Haozhe , Jin Shengbo , Wei Hongzhe , Liu Qian , Yu Jun , Wang Wenping , Ma Siyao , Jiang Yuxin , Yao Huini , Shen Yue , Fu Jiaqing TITLE=Nanomaterials for targeted drug delivery for immunotherapy of digestive tract tumors JOURNAL=Frontiers in Immunology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1562766 DOI=10.3389/fimmu.2025.1562766 ISSN=1664-3224