SLC3A2(solute carrier family 3 member 2)是来自SLC3家族的一种Ⅱ型跨膜糖蛋白,是氨基酸转运体(heteromericamino acid transports,HATs)的重链组成部分。HATs在细胞中广泛表达并介导了几乎所有必需氨基酸的跨膜转运,保证细胞内氨基...SLC3A2(solute carrier family 3 member 2)是来自SLC3家族的一种Ⅱ型跨膜糖蛋白,是氨基酸转运体(heteromericamino acid transports,HATs)的重链组成部分。HATs在细胞中广泛表达并介导了几乎所有必需氨基酸的跨膜转运,保证细胞内氨基酸水平的稳定,对维持细胞正常的生物学功能具有重要作用。越来越多的研究报道,SLC3A2在多种肿瘤中高表达并参与细胞的恶性转化,然而其具体作用机制仅有初步报道尚未阐明。现就SLC3A2的结构、功能及其在肿瘤发生发展过程中的作用机制等综述如下。展开更多
溶质转运蛋白是细胞内数量最多的一类转运蛋白,能够转运包括核酸、氨基酸、糖类、离子、矿物质、药物等物质,是调节和控制细胞内外物质转运的重要通道。越来越多的证据表明溶质转运蛋白与肿瘤密切相关,近年来研究发现其家族成员溶质转...溶质转运蛋白是细胞内数量最多的一类转运蛋白,能够转运包括核酸、氨基酸、糖类、离子、矿物质、药物等物质,是调节和控制细胞内外物质转运的重要通道。越来越多的证据表明溶质转运蛋白与肿瘤密切相关,近年来研究发现其家族成员溶质转运蛋白家族3成员2(Solute Carrier family 3 member 2,SLC3A2)在包括肝癌、肾癌、黑色素瘤等多种肿瘤中表达量增高,并且参与肿瘤细胞增殖、迁移、黏附等生物学行为的调节。本文就近年来关于SLC3A2的研究进展加以总结和概述。展开更多
Human endogenous retroviruses(HERVs)are remnants of retroviral infections in human germline cells from millions of years ago.Among these,ERVW-1(also known as HERV-W-ENV,ERVWE1,or ENVW)encodes the envelope protein of t...Human endogenous retroviruses(HERVs)are remnants of retroviral infections in human germline cells from millions of years ago.Among these,ERVW-1(also known as HERV-W-ENV,ERVWE1,or ENVW)encodes the envelope protein of the HERV-W family,which contributes to the pathophysiology of schizophrenia.Additionally,neuropathological studies have revealed cell death and disruption of iron homeostasis in the brains of individuals with schizophrenia.Here,our bioinformatics analysis showed that differentially expressed genes in the human prefrontal cortex RNA microarray dataset(GSE53987)were mainly related to ferroptosis and its associated pathways.Clinical data demonstrated significantly lower expression levels of ferroptosis-related genes,particularly Glutathione peroxidase 4(GPX4)and solute carrier family 3 member 2(SLC3A2),in schizophrenia patients compared to normal controls.Further in-depth analyses revealed a significant negative correlation between ERVW-1 expression and the levels of GPX4/SLC3A2 in schizophrenia.Studies indicated that ERVW-1 increased iron levels,malondialdehyde(MDA),and transferrin receptor protein 1(TFR1)expression while decreasing glutathione(GSH)levels and triggering the loss of mitochondrial membrane potential,suggesting that ERVW-1 can induce ferroptosis.Ongoing research has shown that ERVW-1 reduced the expression of GPX4 and SLC3A2 by inhibiting their promoter activities.Moreover,Ferrostatin-1(Fer-1),the ferroptosis inhibitor,reversed the iron accumulation and mitochondrial membrane potential loss,as well as restored the expressions of ferroptosis markers GSH,MDA,and TFR1 induced by ERVW-1.In conclusion,ERVW-1 could promote ferroptosis by downregulating the expression of GPX4 and SLC3A2,revealing a novel mechanism by which ERVW-1 contributes to neuronal cell death in schizophrenia.展开更多
目的观察淫黄葛合剂对APP_(swe)/PS1_(dE9)小鼠行为及海马胱氨酸/谷氨酸反向转运体的表达影响。方法6只8月龄雄性C57BL/6J小鼠为正常组,18只8月龄雄性APP_(swe)/PS1_(dE9)小鼠随机分为模型组、合剂组、地拉罗司(deferasirox,DFX)组,每组...目的观察淫黄葛合剂对APP_(swe)/PS1_(dE9)小鼠行为及海马胱氨酸/谷氨酸反向转运体的表达影响。方法6只8月龄雄性C57BL/6J小鼠为正常组,18只8月龄雄性APP_(swe)/PS1_(dE9)小鼠随机分为模型组、合剂组、地拉罗司(deferasirox,DFX)组,每组6只。正常组、模型组给予蒸馏水灌胃,合剂组灌胃淫黄葛合剂(淫羊藿苷120 mg·kg^(-1)、黄芪甲苷80 mg·kg^(-1)、葛根素80 mg·kg^(-1)),DFX组灌胃DFX(100 mg·kg^(-1)),每日1次,干预2个月。利用八臂迷宫实验检测各组小鼠空间、学习记忆能力;免疫荧光观察正常组、模型组小鼠海马CA3区溶质载体家族7成员11(solute carrier family 7 member 11,SLC7A11)与溶质载体家族3成员2(solute carrier family 3 member 2,SLC3A2)的表达水平;Western blot和real time q-PCR检测各组小鼠海马SLC7A11、SLC3A2蛋白及mRNA表达水平。结果与正常组相比,模型组小鼠空间学习记忆能力下降,海马CA3区SLC7A11、SLC3A2表达下降(P<0.05),海马SLC7A11、SLC3A2蛋白及mRNA表达下降(P<0.05);与模型组相比,合剂组、DFX组空间学习记忆能力提升,海马SLC7A11、SLC3A2蛋白及mRNA表达上升(P<0.05);合剂组与DFX组各项指标差异无统计学意义(P>0.05)。结论淫黄葛合剂可以改善APP_(swe)/PS1_(dE9)小鼠的行为障碍,其机制与促进海马SLC7A11、SLC3A2的表达有关。展开更多
文摘SLC3A2(solute carrier family 3 member 2)是来自SLC3家族的一种Ⅱ型跨膜糖蛋白,是氨基酸转运体(heteromericamino acid transports,HATs)的重链组成部分。HATs在细胞中广泛表达并介导了几乎所有必需氨基酸的跨膜转运,保证细胞内氨基酸水平的稳定,对维持细胞正常的生物学功能具有重要作用。越来越多的研究报道,SLC3A2在多种肿瘤中高表达并参与细胞的恶性转化,然而其具体作用机制仅有初步报道尚未阐明。现就SLC3A2的结构、功能及其在肿瘤发生发展过程中的作用机制等综述如下。
文摘溶质转运蛋白是细胞内数量最多的一类转运蛋白,能够转运包括核酸、氨基酸、糖类、离子、矿物质、药物等物质,是调节和控制细胞内外物质转运的重要通道。越来越多的证据表明溶质转运蛋白与肿瘤密切相关,近年来研究发现其家族成员溶质转运蛋白家族3成员2(Solute Carrier family 3 member 2,SLC3A2)在包括肝癌、肾癌、黑色素瘤等多种肿瘤中表达量增高,并且参与肿瘤细胞增殖、迁移、黏附等生物学行为的调节。本文就近年来关于SLC3A2的研究进展加以总结和概述。
基金supported by the National Natural Science Foundation of China(Nos.82272321 and 81971943)Fundamental Research Funds for the Central Universities(2042023kf0230)the Stanley Foundation from the Stanley Medical Research Institute(SMRI),United States(No.06R-1366).
文摘Human endogenous retroviruses(HERVs)are remnants of retroviral infections in human germline cells from millions of years ago.Among these,ERVW-1(also known as HERV-W-ENV,ERVWE1,or ENVW)encodes the envelope protein of the HERV-W family,which contributes to the pathophysiology of schizophrenia.Additionally,neuropathological studies have revealed cell death and disruption of iron homeostasis in the brains of individuals with schizophrenia.Here,our bioinformatics analysis showed that differentially expressed genes in the human prefrontal cortex RNA microarray dataset(GSE53987)were mainly related to ferroptosis and its associated pathways.Clinical data demonstrated significantly lower expression levels of ferroptosis-related genes,particularly Glutathione peroxidase 4(GPX4)and solute carrier family 3 member 2(SLC3A2),in schizophrenia patients compared to normal controls.Further in-depth analyses revealed a significant negative correlation between ERVW-1 expression and the levels of GPX4/SLC3A2 in schizophrenia.Studies indicated that ERVW-1 increased iron levels,malondialdehyde(MDA),and transferrin receptor protein 1(TFR1)expression while decreasing glutathione(GSH)levels and triggering the loss of mitochondrial membrane potential,suggesting that ERVW-1 can induce ferroptosis.Ongoing research has shown that ERVW-1 reduced the expression of GPX4 and SLC3A2 by inhibiting their promoter activities.Moreover,Ferrostatin-1(Fer-1),the ferroptosis inhibitor,reversed the iron accumulation and mitochondrial membrane potential loss,as well as restored the expressions of ferroptosis markers GSH,MDA,and TFR1 induced by ERVW-1.In conclusion,ERVW-1 could promote ferroptosis by downregulating the expression of GPX4 and SLC3A2,revealing a novel mechanism by which ERVW-1 contributes to neuronal cell death in schizophrenia.
文摘目的观察淫黄葛合剂对APP_(swe)/PS1_(dE9)小鼠行为及海马胱氨酸/谷氨酸反向转运体的表达影响。方法6只8月龄雄性C57BL/6J小鼠为正常组,18只8月龄雄性APP_(swe)/PS1_(dE9)小鼠随机分为模型组、合剂组、地拉罗司(deferasirox,DFX)组,每组6只。正常组、模型组给予蒸馏水灌胃,合剂组灌胃淫黄葛合剂(淫羊藿苷120 mg·kg^(-1)、黄芪甲苷80 mg·kg^(-1)、葛根素80 mg·kg^(-1)),DFX组灌胃DFX(100 mg·kg^(-1)),每日1次,干预2个月。利用八臂迷宫实验检测各组小鼠空间、学习记忆能力;免疫荧光观察正常组、模型组小鼠海马CA3区溶质载体家族7成员11(solute carrier family 7 member 11,SLC7A11)与溶质载体家族3成员2(solute carrier family 3 member 2,SLC3A2)的表达水平;Western blot和real time q-PCR检测各组小鼠海马SLC7A11、SLC3A2蛋白及mRNA表达水平。结果与正常组相比,模型组小鼠空间学习记忆能力下降,海马CA3区SLC7A11、SLC3A2表达下降(P<0.05),海马SLC7A11、SLC3A2蛋白及mRNA表达下降(P<0.05);与模型组相比,合剂组、DFX组空间学习记忆能力提升,海马SLC7A11、SLC3A2蛋白及mRNA表达上升(P<0.05);合剂组与DFX组各项指标差异无统计学意义(P>0.05)。结论淫黄葛合剂可以改善APP_(swe)/PS1_(dE9)小鼠的行为障碍,其机制与促进海马SLC7A11、SLC3A2的表达有关。
