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The genesis and progression of cancer is a process of immunoediting that consists of 3 phases, namely elimination, equilibrium and escape phases. This process is also a microevolutionary game process between the body and the tumor. Data from mouse tumors and some human tumors shows that both T cell-based adaptive immunity and innate lymphoid cell (ILC)-based innate immunity participate in cancer immunoediting. The ILCs, which belong to tissue-resident cells and consist of multiple subsets, are a unique branch of the innate immune system discovered over a decade ago. The characteristics and functions of ILCs exhibit significant heterogeneity and are regulated by a variety of factors secreted by various kinds of cells. ILCs participate not only in the regulation of tissue homeostasis and inflammatory responses, but also, through various mechanisms, in the formation of tumor microenvironment and cancer immunoediting process. This paper studies the classification and characteristics of ILCs and their roles and mechanisms in tumors, aiming to explore new thoughts for the pathogenesis, diagnosis and treatment of tumors. [ABSTRACT FROM AUTHOR]

Introduction: Among the risk factors for squamous cell carcinoma of the head and neck, smoking is still the most important today. Several studies agree on the effect of smoking on tumor microenvironment, while the definition of former smokers and the time of smoking cessation on biologic effect differs among papers. Methods: We conducted a narrative review on smoking effects in HNSCC. Results: There is evidence that smoker patients have a poorer prognosis than never smokers and former smokers. Translational studies show a relationship between smoking status and gene expression and support the importance of smoking cessation, for instance, demonstrating an inverse relationship between tumor-infiltrating lymphocytes and smoking. Conclusion: Convincing data suggest that quitting smoking at any time may improve patient outcomes. We advocate smoking cessation also after cancer diagnosis. [ABSTRACT FROM AUTHOR]

Cancer is a main life-threatening disease worldwide. Due to the adverse effects of conventional chemotherapies and radiotherapies, immunotherapy has emerged as a potent strategy to treat cancer. In cancer immunotherapy, cancer immune surveillance plays a crucial role in the cancer process, which contains various effector cells from innate and adaptive immunity. This review summarized the functions of innate and adaptive immune cells in cancer immunosurveillance and their main reported targets. Moreover, the potential targets about the modulatory effects of cancer immunosurveillance were predicted using network-based target analysis, with total predicted pathways not only reporting previously reported pathways, but also putative signaling pathways pending for investigation. In addition, the potential use of herbal medicines and their phytochemicals in the modulation of cancer immunosurveillance were also discussed. Taken together, this review paper aims to provide scientific insight into further drug development, particularly herbs, phytochemicals, and TCM formulae, in the modulatory effects of cancer immunosurveillance. [ABSTRACT FROM AUTHOR]