Complementary and alternative medicine (CAM) plays a critical role in treating cancer patients. Traditional Chinese Medicine (TCM) is the main component of CAM. TCM, especially Chinese Herbal Medicine (CHM), has been increasingly used in China, some other Asian countries and European countries. It has been proven to enhance the efficacy of chemotherapy, radiotherapy, targeted-therapy, and immunotherapy. It lessens the damage caused by these therapies. CHM functions on cancer by inhibiting tumor progression and improving an organism’s immune system. Increasing evidence has shown that many CHM exert favorable effects on the immune regulation. We will summarize the role of CHM on patient’s immune system when treating cancer patients. Our evidence reveals that single herbs, including their extracts, compound formulations, and preparations, will provide current advances on CHM study, especially from the perspective of immune regulation and novel insights for CHM application in clinic. The main herbs used to treat cancer patients are health-strengthening (Fu-Zheng) herbs and pathogen eliminating (Qu-Xie) herbs. The key mechanism is regulating the immune system of cancer patients. Firstly, health-strengthening herbs are mainly functioned as immune regulatory effectors on cancer. Secondly, some of the compound formulations mainly strengthen the health of patients by regulating the immune system of cancer patients. Lastly, some Chinese medicine preparations are widely used to treat cancer for their properties of spiriting vital energy and anti-cancer effects, mainly by improving immunity. CHM plays a positive role in regulating patients’ immune system, which helps cancer patients to fight against cancer itself and finally improves patients’ life quality.
Programmed cell death protein-1 (PD-1) is a checkpoint receptor expressed on the surface of various immune cells. PD-L1, the natural receptor for PD-1, is mainly expressed in tumor cells. Studies have indicated that PD-1 and PD-L1 are closely associated with the progression of human cancers and are promising biomarkers for cancer therapy. Moreover, the interaction of PD-1 and PD-L1 is one of the important mechanism by which human tumors generate immune escape. This article provides a review on the role of PD-L1/PD-1, mechanisms of immune response and resistance, as well as immune-related adverse events in the treatment of anti-PD-1/PD-L1 immunotherapy in human cancers. Moreover, we summarized a large number of clinical trials to successfully reveal that PD-1/PD-L1 Immune-checkpoint inhibitors have manifested promising therapeutic effects, which have been evaluated from different perspectives, including overall survival, objective effective rate and medium progression-free survival. Finally, we pointed out the current problems faced by PD-1/PD-L1 Immune-checkpoint inhibitors and its future prospects. Although PD-1/PD-L1 immune checkpoint inhibitors have been widely used in the treatment of human cancers, tough challenges still remain. Combination therapy and predictive models based on integrated biomarker determination theory may be the future directions for the application of PD-1/PD-L1 Immune-checkpoint inhibitors in treating human cancers.
Although lots of great achievements have been gained in the battle against cancer during the past decades, cancer is still the leading cause of death in the world including in developing countries such as China. Traditional Chinese medicine (TCM) is popular in Chinese and East Asian societies as well as some other Western countries and plays an active role in the modern healthcare system including patients with cancer, which may act as a potential effective strategy in treating human cancers. In this review, we aimed to introduce the mechanisms of TCM compound, as an option of individualized therapy, in treating cancer patients from the perspective of both Chinese and Western medicine. In the view of traditional Chinese medicine theory, individualized treatment for human cancers based on syndrome type benefits the cancer patients with personalized conditions. Balancing Qi, Xue, Yin and Yang, eliminating phlegm and removing dampness is how TCM compound functions on cancer patients. While in the view of Western medicine, inhibiting cancer cell growth and metastasis as well as improving immune status is how herbal compounds act on cancer patients. We also summarized the applications of TCM compound in human cancers, which will shed light on the clinical application of TCM compound on patients with cancer. TCM compound could be used as a complementary and alternative medicine (CAM) in human cancers. It could be applied in cancer patients with cancer-related fatigue (CRF). In addition, it is a good method for alleviating the side effects of both radiotherapy and chemotherapy. Therefore, TCM compound plays a critical role in treating patients with cancer, which has a promising strategy in the field of cancer management.
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