仙灵骨葆口服制剂是我国治疗骨病的中药大品种,但近年来国家食品药品监督管理总局通报其易引起肝损伤。传统毒理学研究很难评价其肝损伤作用,我们前期发现仙灵骨葆肝损伤具有特异质属性,拆方研究发现补骨脂和淫羊藿是其导致特异质肝损...仙灵骨葆口服制剂是我国治疗骨病的中药大品种,但近年来国家食品药品监督管理总局通报其易引起肝损伤。传统毒理学研究很难评价其肝损伤作用,我们前期发现仙灵骨葆肝损伤具有特异质属性,拆方研究发现补骨脂和淫羊藿是其导致特异质肝损伤的主要药味,且配伍后其特异质肝损伤加重,呈现七情配伍中“相反”的特点。进一步研究发现,TNF-α介导的免疫应激是其重要诱因,免疫促进成分和肝损伤易感成分存在是其另一重要诱因。然而,具体机制尚不清楚。本研究通过建立动物模型,考察了免疫促进淫羊藿次苷Ⅱ联合肝损伤易感成分补骨脂甲素对小鼠肝损伤的影响;借助非靶向代谢组学技术评价了两个成分联合对肝损伤代谢标志物的影响;利用16S r RNA测序技术探讨了肠道菌群的物种组成和相对丰度的变化。结果表明在TNF-α诱导的免疫应激小鼠模型上发现,单独给药补骨脂甲素能够引起明显肝损伤,而淫羊藿次苷Ⅱ组却无明显变化,但是淫羊藿次苷Ⅱ能够协同补骨脂甲素导致特异质肝损伤;同时代谢组学结果揭示补骨脂甲素联合淫羊藿次苷Ⅱ能够引起小鼠肝脏中甲基氨基甲酰PAF、吲哚-3-醋酸甲酯等代谢物的水平升高,而甘氨酸-酪氨酸(Gly-Tyr)、L-亮氨酰-L-甘氨酸(Leu-Gly)和L-色氨酸-L-丝氨酸(Trp-Ser)等代谢物的水平则下降。这些与肝损伤相关的差异表达代谢物主要富集在鞘脂代谢、鞘脂信号通路和坏死等代谢途径。值得注意的是,补骨脂甲素联合淫羊藿次苷Ⅱ可以诱导肝损伤小鼠肠道中的乳酸杆菌和脱硫弧菌科丰度显著增加。相关性分析结果表明,类杆菌科和脱硫弧菌科与甲基氨基甲酰基PAF和吲哚-3-醋酸甲酯呈正相关,而与Gly-Tyr、Leu-Gly和Trp-Ser呈负相关。本研究初步阐明了补骨脂配伍淫羊藿引起特异质型药物性肝损伤的物质基础和机制,为中成药临床合理使用提供了科学依据。展开更多
The discovery of immune checkpoint inhibitors,such as PD-1/PD-L1 and CTLA-4,has played an important role in the development of cancer immunotherapy.However,immune-related adverse events often occur because of the enha...The discovery of immune checkpoint inhibitors,such as PD-1/PD-L1 and CTLA-4,has played an important role in the development of cancer immunotherapy.However,immune-related adverse events often occur because of the enhanced immune response enabled by these agents.Antibiotics are widely applied in clinical treatment,and they are inevitably used in combination with immune checkpoint inhibitors.Clinical practice has revealed that antibiotics can weaken the therapeutic response to immune checkpoint inhibitors.Studies have shown that the gut microbiota is essential for the interaction between immune checkpoint inhibitors and antibiotics,although the exact mechanisms remain unclear.This review focuses on the interactions between immune checkpoint inhibitors and antibiotics,with an in-depth discussion about the mechanisms and therapeutic potential of modulating gut microbiota,as well as other new combination strategies.展开更多
基金supported by the National Natural Science Foundation of China (82174071)。
文摘仙灵骨葆口服制剂是我国治疗骨病的中药大品种,但近年来国家食品药品监督管理总局通报其易引起肝损伤。传统毒理学研究很难评价其肝损伤作用,我们前期发现仙灵骨葆肝损伤具有特异质属性,拆方研究发现补骨脂和淫羊藿是其导致特异质肝损伤的主要药味,且配伍后其特异质肝损伤加重,呈现七情配伍中“相反”的特点。进一步研究发现,TNF-α介导的免疫应激是其重要诱因,免疫促进成分和肝损伤易感成分存在是其另一重要诱因。然而,具体机制尚不清楚。本研究通过建立动物模型,考察了免疫促进淫羊藿次苷Ⅱ联合肝损伤易感成分补骨脂甲素对小鼠肝损伤的影响;借助非靶向代谢组学技术评价了两个成分联合对肝损伤代谢标志物的影响;利用16S r RNA测序技术探讨了肠道菌群的物种组成和相对丰度的变化。结果表明在TNF-α诱导的免疫应激小鼠模型上发现,单独给药补骨脂甲素能够引起明显肝损伤,而淫羊藿次苷Ⅱ组却无明显变化,但是淫羊藿次苷Ⅱ能够协同补骨脂甲素导致特异质肝损伤;同时代谢组学结果揭示补骨脂甲素联合淫羊藿次苷Ⅱ能够引起小鼠肝脏中甲基氨基甲酰PAF、吲哚-3-醋酸甲酯等代谢物的水平升高,而甘氨酸-酪氨酸(Gly-Tyr)、L-亮氨酰-L-甘氨酸(Leu-Gly)和L-色氨酸-L-丝氨酸(Trp-Ser)等代谢物的水平则下降。这些与肝损伤相关的差异表达代谢物主要富集在鞘脂代谢、鞘脂信号通路和坏死等代谢途径。值得注意的是,补骨脂甲素联合淫羊藿次苷Ⅱ可以诱导肝损伤小鼠肠道中的乳酸杆菌和脱硫弧菌科丰度显著增加。相关性分析结果表明,类杆菌科和脱硫弧菌科与甲基氨基甲酰基PAF和吲哚-3-醋酸甲酯呈正相关,而与Gly-Tyr、Leu-Gly和Trp-Ser呈负相关。本研究初步阐明了补骨脂配伍淫羊藿引起特异质型药物性肝损伤的物质基础和机制,为中成药临床合理使用提供了科学依据。
基金supported by Bijing Hope Run Special Fund of Cancer Foundation of China(No.LC2020L03)and Bejig Municipal Science&Technology Commission(No.Z1811000-01618003).
文摘The discovery of immune checkpoint inhibitors,such as PD-1/PD-L1 and CTLA-4,has played an important role in the development of cancer immunotherapy.However,immune-related adverse events often occur because of the enhanced immune response enabled by these agents.Antibiotics are widely applied in clinical treatment,and they are inevitably used in combination with immune checkpoint inhibitors.Clinical practice has revealed that antibiotics can weaken the therapeutic response to immune checkpoint inhibitors.Studies have shown that the gut microbiota is essential for the interaction between immune checkpoint inhibitors and antibiotics,although the exact mechanisms remain unclear.This review focuses on the interactions between immune checkpoint inhibitors and antibiotics,with an in-depth discussion about the mechanisms and therapeutic potential of modulating gut microbiota,as well as other new combination strategies.
