Background & Aims: Although the presence of tertiary lymphoid structures (TLS) correlates with positive responses to immunotherapy in many solid malignancies, the mechanism by which TLS enhances anti-tumor immunity is not well understood. The present study aimed to investigate the underlying cross-talk circuits between B cells and tissue-resident memory T (Trm) cells within the TLS and to understand their role in the context of immunotherapy.
Methods: Immunostaining and hematoxylin and eosin staining of TLS and CXCL13CD103CD8Trm cells were performed on tumor sections from patients with gastric cancer (GC).