The immune microenvironment plays a crucial role in tumor progression and response to therapy. Recent studies have highlighted the multifaceted functions of dendritic cells (DCs) in enhancing anti-tumor immunity. For instance, Chen et al. demonstrated that DNASE1L3-expressing DCs degrade neutrophil extracellular traps, facilitating CD8+ T cell infiltration into tumors and improving the efficacy of checkpoint blockade therapies (ref: Klechevsky doi.org/10.1016/j.ccell.2025.07.003/). In ovarian cancer, Ghisoni et al. analyzed 697 tumor samples and identified four immune phenotypes linked to prognosis, revealing that myeloid cell networks are pivotal in re-establishing immune landscapes in recurrent cases (ref: Ghisoni doi.org/10.1016/j.ccell.2025.07.005/). Furthermore, Shi's research on bone metastases indicated a predominance of immature neutrophils in the tumor microenvironment, which may contribute to the poor response to immune checkpoint blockade therapies (ref: Shi doi.org/10.1016/j.ccell.2025.07.007/). These findings underscore the complexity of immune-tumor interactions and the need for tailored therapeutic strategies that consider the specific immune landscape of each tumor type. In renal cell carcinoma, Salgia et al. explored the paradoxical immune sensitivity of sarcomatoid features, revealing that tumor-infiltrating T cells in sarcomatoid renal cell carcinoma (sRCC) are more activated and enriched for CXCL13 expression compared to clear cell RCC (ccRCC) (ref: Salgia doi.org/10.1016/j.ccell.2025.07.010/). This suggests that the immune microenvironment can significantly influence treatment outcomes. Additionally, Biederstädt's genome-wide CRISPR screens identified critical targets to enhance CAR-NK cell antitumor potency, emphasizing the potential of engineered immune cells in overcoming tumor-mediated immunosuppression (ref: Biederstädt doi.org/10.1016/j.ccell.2025.07.021/). Overall, these studies illustrate the dynamic interplay between the immune system and tumors, highlighting the importance of understanding these interactions for developing effective cancer therapies.