Retinitis pigmentosa is a group of inherited diseases that lead to retinal degeneration and photoreceptor cell death.However,there is no effective treatment for retinitis pigmentosa caused by PDE6B mutation.Adeno-asso...Retinitis pigmentosa is a group of inherited diseases that lead to retinal degeneration and photoreceptor cell death.However,there is no effective treatment for retinitis pigmentosa caused by PDE6B mutation.Adeno-associated virus(AAV)-mediated gene therapy is a promising strategy for treating retinitis pigmentosa.The aim of this study was to explore the molecular mechanisms by which AAV2-PDE6B rescues retinal function.To do this,we injected retinal degeneration 10(rd10)mice subretinally with AAV2-PDE6B and assessed the therapeutic effects on retinal function and structure using dark-and light-adapted electroretinogram,optical coherence tomography,and immunofluorescence.Data-independent acquisition-mass spectrometry-based proteomic analysis was conducted to investigate protein expression levels and pathway enrichment,and the results from this analysis were verified by real-time polymerase chain reaction and western blotting.AAV2-PDE6B injection significantly upregulated PDE6βexpression,preserved electroretinogram responses,and preserved outer nuclear layer thickness in rd10 mice.Differentially expressed proteins between wild-type and rd10 mice were closely related to visual perception,and treating rd10 mice with AAV2-PDE6B restored differentially expressed protein expression to levels similar to those seen in wild-type mice.Kyoto Encyclopedia of Genes and Genome analysis showed that the differentially expressed proteins whose expression was most significantly altered by AAV2-PDE6B injection were enriched in phototransduction pathways.Furthermore,the phototransductionrelated proteins Pde6α,Rom1,Rho,Aldh1a1,and Rbp1 exhibited opposite expression patterns in rd10 mice with or without AAV2-PDE6B treatment.Finally,Bax/Bcl-2,p-ERK/ERK,and p-c-Fos/c-Fos expression levels decreased in rd10 mice following AAV2-PDE6B treatment.Our data suggest that AAV2-PDE6B-mediated gene therapy promotes phototransduction and inhibits apoptosis by inhibiting the ERK signaling pathway and upregulating Bcl-2/Bax expression in retinitis pigmentosa.展开更多
[Objective]The aim was to study the differential expression ofAPOEgene in different generations of porcine fetal fibroblasts cells.[Method]The first,tenth,fifteenth,twentieth,twenty-fifth,fiftieth generations of porci...[Objective]The aim was to study the differential expression ofAPOEgene in different generations of porcine fetal fibroblasts cells.[Method]The first,tenth,fifteenth,twentieth,twenty-fifth,fiftieth generations of porcine fetal fibroblast cells,which were normally grown and passed,were collected before total RNA was extracted respectively.The expression ofAPOEgene in different generations of porcine fetal fibro-blast cells was detected by RT-PCR technique.[Result]The expression level of porcine APOE mRNA in the first generation of porcine fetal fi-broblast cells was the highest,and then it gradually decreased with the increase of cell generations and was the lowest in the fiftieth generation.[Conclusion]The expression ofAPOEgene had the selective trend in different generations of porcine fetal fibroblast cells.展开更多
目的分析老年期痴呆的行为精神症状(behavioral and psychological symptom of dementia,BPSD)的非药物治疗效果及其与载脂蛋白E(apolipoprotein E,ApoE)基因多态性的关系。方法选取2016年1月至2022年12月江西省人民医院收治的90例老年...目的分析老年期痴呆的行为精神症状(behavioral and psychological symptom of dementia,BPSD)的非药物治疗效果及其与载脂蛋白E(apolipoprotein E,ApoE)基因多态性的关系。方法选取2016年1月至2022年12月江西省人民医院收治的90例老年期痴呆患者为研究对象,根据随机数字表法将其分为常规组、对照组和观察组,每组各30例。常规组患者给予盐酸美金刚片治疗,对照组患者在常规组基础上加以音乐疗法,观察组患者在常规组基础上加以重复经颅磁刺激治疗,三组均连续治疗12周。比较三组患者的BPSD严重程度、痴呆严重程度、认知功能、日常生活能力、ApoE基因多态性。结果治疗前,三组患者的神经精神问卷(neuropsychiatric inventory,NPI)、临床痴呆评定量表(clinical dementia rating,CDR)、简明精神状态检查量表(mini-mental state examination,MMSE)、日常生活能力评定量表(activity of daily living scale,ADL)评分比较差异均无统计学意义(P>0.05);治疗后,三组患者的NPI、CDR评分均显著低于本组治疗前,MMSE、ADL评分均显著高于本组治疗前(P<0.05);观察组和对照组患者的NPI、CDR评分均显著低于常规组,MMSE、ADL评分均显著高于常规组(P<0.05)。ApoE共有ε2、ε3、ε4三种等位基因,其中ε3表达频率最高,共55例,其次为ε4和ε2;三组患者的ApoE不同基因检出率比较差异无统计学意义(P>0.05)。ApoEε4型患者的NPI评分显著高于ApoEε3型与ApoEε2型(P<0.05)。结论非药物治疗老年期痴呆患者效果显著,可减轻BPSD和痴呆表现,提高患者的认知功能和日常生活能力,ApoEε4型基因与老年期痴呆患者的BPSD存在紧密联系。展开更多
基金supported by the National Natural Science Foundation of China,Nos.82071008(to BL)and 82004001(to XJ)Medical Science and Technology Program of Health Commission of Henan Province,No.LHGJ20210072(to RQ)Science and Technology Department of Henan Province,No.212102310307(to XJ)。
文摘Retinitis pigmentosa is a group of inherited diseases that lead to retinal degeneration and photoreceptor cell death.However,there is no effective treatment for retinitis pigmentosa caused by PDE6B mutation.Adeno-associated virus(AAV)-mediated gene therapy is a promising strategy for treating retinitis pigmentosa.The aim of this study was to explore the molecular mechanisms by which AAV2-PDE6B rescues retinal function.To do this,we injected retinal degeneration 10(rd10)mice subretinally with AAV2-PDE6B and assessed the therapeutic effects on retinal function and structure using dark-and light-adapted electroretinogram,optical coherence tomography,and immunofluorescence.Data-independent acquisition-mass spectrometry-based proteomic analysis was conducted to investigate protein expression levels and pathway enrichment,and the results from this analysis were verified by real-time polymerase chain reaction and western blotting.AAV2-PDE6B injection significantly upregulated PDE6βexpression,preserved electroretinogram responses,and preserved outer nuclear layer thickness in rd10 mice.Differentially expressed proteins between wild-type and rd10 mice were closely related to visual perception,and treating rd10 mice with AAV2-PDE6B restored differentially expressed protein expression to levels similar to those seen in wild-type mice.Kyoto Encyclopedia of Genes and Genome analysis showed that the differentially expressed proteins whose expression was most significantly altered by AAV2-PDE6B injection were enriched in phototransduction pathways.Furthermore,the phototransductionrelated proteins Pde6α,Rom1,Rho,Aldh1a1,and Rbp1 exhibited opposite expression patterns in rd10 mice with or without AAV2-PDE6B treatment.Finally,Bax/Bcl-2,p-ERK/ERK,and p-c-Fos/c-Fos expression levels decreased in rd10 mice following AAV2-PDE6B treatment.Our data suggest that AAV2-PDE6B-mediated gene therapy promotes phototransduction and inhibits apoptosis by inhibiting the ERK signaling pathway and upregulating Bcl-2/Bax expression in retinitis pigmentosa.
基金Supported by 863 Program of China(2007AA10Z161)National Natural Science Foundation of China(30771545)~~
文摘[Objective]The aim was to study the differential expression ofAPOEgene in different generations of porcine fetal fibroblasts cells.[Method]The first,tenth,fifteenth,twentieth,twenty-fifth,fiftieth generations of porcine fetal fibroblast cells,which were normally grown and passed,were collected before total RNA was extracted respectively.The expression ofAPOEgene in different generations of porcine fetal fibro-blast cells was detected by RT-PCR technique.[Result]The expression level of porcine APOE mRNA in the first generation of porcine fetal fi-broblast cells was the highest,and then it gradually decreased with the increase of cell generations and was the lowest in the fiftieth generation.[Conclusion]The expression ofAPOEgene had the selective trend in different generations of porcine fetal fibroblast cells.
文摘目的分析老年期痴呆的行为精神症状(behavioral and psychological symptom of dementia,BPSD)的非药物治疗效果及其与载脂蛋白E(apolipoprotein E,ApoE)基因多态性的关系。方法选取2016年1月至2022年12月江西省人民医院收治的90例老年期痴呆患者为研究对象,根据随机数字表法将其分为常规组、对照组和观察组,每组各30例。常规组患者给予盐酸美金刚片治疗,对照组患者在常规组基础上加以音乐疗法,观察组患者在常规组基础上加以重复经颅磁刺激治疗,三组均连续治疗12周。比较三组患者的BPSD严重程度、痴呆严重程度、认知功能、日常生活能力、ApoE基因多态性。结果治疗前,三组患者的神经精神问卷(neuropsychiatric inventory,NPI)、临床痴呆评定量表(clinical dementia rating,CDR)、简明精神状态检查量表(mini-mental state examination,MMSE)、日常生活能力评定量表(activity of daily living scale,ADL)评分比较差异均无统计学意义(P>0.05);治疗后,三组患者的NPI、CDR评分均显著低于本组治疗前,MMSE、ADL评分均显著高于本组治疗前(P<0.05);观察组和对照组患者的NPI、CDR评分均显著低于常规组,MMSE、ADL评分均显著高于常规组(P<0.05)。ApoE共有ε2、ε3、ε4三种等位基因,其中ε3表达频率最高,共55例,其次为ε4和ε2;三组患者的ApoE不同基因检出率比较差异无统计学意义(P>0.05)。ApoEε4型患者的NPI评分显著高于ApoEε3型与ApoEε2型(P<0.05)。结论非药物治疗老年期痴呆患者效果显著,可减轻BPSD和痴呆表现,提高患者的认知功能和日常生活能力,ApoEε4型基因与老年期痴呆患者的BPSD存在紧密联系。
