Various new treatments are emerging constantly in anti-tumor therapies, including chemotherapy, immunotherapy, and targeted therapy. However, the efficacy is still not satisfactory. Astragalus polysaccharide is an important bioactive component derived from the dry root of Radix astragali. Studies found that astragalus polysaccharides have gained great significance in increasing the sensitivity of anti-tumor treatment, reducing the side effects of anti-tumor treatment, reversing the drug resistance of anti-tumor drugs, etc. In this review, we focused on the role of astragalus polysaccharides in tumor immune microenvironment. We reviewed the immunomodulatory effect of astragalus polysaccharides on macrophages, dendritic cells, natural killer cells, T lymphocytes, and B lymphocytes. We found that astragalus polysaccharides can promote the activities of macrophages, dendritic cells, natural killer cells, T lymphocytes, and B lymphocytes and induce the expression of a variety of cytokines and chemokines. Furthermore, we summarized the clinical applications of astragalus polysaccharides in patients with digestive tract tumors. We summarized the effective mechanism of astragalus polysaccharides on digestive tract tumors, including apoptosis induction, proliferation inhibition, immunoactivity regulation, enhancement of the anticancer effect and chemosensitivity. Therefore, in view of the multiple functions of astragalus polysaccharides in tumor immune microenvironment and its clinical efficacy, the combination of astragalus polysaccharides with antitumor therapy such as immunotherapy may provide new sparks to the bottleneck of current treatment methods.
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| http://dx.doi.org/10.1007/s12672-023-00798-w | DOI Listing |
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College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, PR China. Electronic address:
Due to the lack of specific antibody anti-chicken tumor necrosis factor receptor-associated factor 2 (TRAF2), it is difficult to further explore the role of TRAF2 in pulmonary artery remodeling in pulmonary hypertension(PH) in broilers. In this experiment, we prepared a polyclonal antibody to TRAF2 by constructing a TRAF2 recombinant protein prokaryotic expression vector and analyzed the expression of TRAF2 in in vivo and in vitro models of pulmonary hypertension in broiler chickens and the effect of TRAF2 on the activity and apoptosis of PASMCs. The results showed that after immunization with TRAF2 recombinant protein we obtained high titers of polyclonal antibodies, and astragalus polysaccharide as an immune adjuvant could enhance the effect of immunization.
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Department of Rheumatology and Immunology, The First Hospital of China Medical University, Shenyang 110001, PR China. Electronic address:
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State Key Laboratory of Mariculture Breeding, Key Laboratory of Marine Biotechnology of Fujian Province, College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; University Key Lab for Integrated Chinese Traditional and Western Veterinary Medicine and Animal Healthcare in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China. Electronic address:
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Department of Traditional Chinese Medicine, The First Affiliated Hospital of Jinan University, Guangzhou, People's Republic of China.
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