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Transforming growth factor-β (TGF-β) belongs to a group of biologically active cytokines that bind to its receptors to activate Smad signaling and non-Smad signaling pathways. The biological functions of TGF-β include promoting cell epithelial-mesenchymal transition, tissue fibrosis, angiogenesis and tumor immune evasion, as well as dual effects of cancer suppression and cancer promotion. Given the fact that the ligand-and receptors-mediated abnormal activation of TGF-β signaling pathways play an important role in the pathogenesis of multiple diseases such as malignant tumors and tissue fibrosis, more than a dozen small-molecule inhibitors have been developed to block the TGF-β signaling pathways, providing a novel method for controlling the development of these diseases. At present, pirfenidone, an inhibitor for TGF-β production, has been approved for treatment of idiopathic pulmonary fibrosis, while the inhibitors of TGFβRI/ALK5 for therapeutics of tumors or myelodysplastic syndromes, including LY2157299, EW-7197 and LY3200882, are in the phase Ⅰ to Ⅲ clinical trials, with additional ones inhibiting TGFβRs such as SB-431542, LY2109761, TP-0427736, and IN-1130 being in the preclinical phase. This paper reviews recent advances in research of small-molecule inhibitors targeting TGF-β and its receptors.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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