Researchers commonly use cyclization recombination enzyme/locus of X-over P1(Cre/loxP)technology-based conditional gene knockouts of model mice to investigate the functional roles of genes of interest in Sertoli and L...Researchers commonly use cyclization recombination enzyme/locus of X-over P1(Cre/loxP)technology-based conditional gene knockouts of model mice to investigate the functional roles of genes of interest in Sertoli and Leydig cells within the testis.However,the shortcomings of these genetic tools include high costs,lengthy experimental periods,and limited accessibility for researchers.Therefore,exploring alternative gene silencing techniques is of great practical value.In this study,we employed adeno-associated virus(AAV)as a vector for gene silencing in Sertoli and Leydig cells.Our findings demonstrated that AAV serotypes 1,8,and 9 exhibited high infection efficiency in both types of testis cells.Importantly,we discovered that all three AAV serotypes exhibited exquisite specificity in targeting Sertoli cells via tubular injection while demonstrating remarkable selectivity in targeting Leydig cells via interstitial injection.We achieved cell-specific knockouts of the steroidogenic acute regulatory(Star)and luteinizing hormone/human chorionic gonadotropin receptor(Lhcgr)genes in Leydig cells,but not in Sertoli cells,using AAV9-single guide RNA(sgRNA)-mediated gene editing in Rosa26-LSL-Cas9mice.Knockdown of androgen receptor(Ar)gene expression in Sertoli cells of wild-type mice was achieved via tubular injection of AAV9-short hairpinRNA(shRNA)-mediated targeting.Our findings offer technical approaches for investigating gene function in Sertoli and Leydig cells through AAV9-mediated gene silencing.展开更多
目的：探讨邻苯二甲酸二乙基己酯（DEHP）对新生小鼠睾丸及Leydig细胞形态结构及功能的影响。方法：DEHP分别以低、中、高3组剂量[100、200、500mg／（kg·d）]灌胃作用于怀孕12d到产后3d（GD12～PND3）的KM母鼠，观察DEHP对新生雄...目的：探讨邻苯二甲酸二乙基己酯（DEHP）对新生小鼠睾丸及Leydig细胞形态结构及功能的影响。方法：DEHP分别以低、中、高3组剂量[100、200、500mg／（kg·d）]灌胃作用于怀孕12d到产后3d（GD12～PND3）的KM母鼠，观察DEHP对新生雄性仔鼠体重、睾丸重量、Leydig细胞形态结构和3β-羟基类固醇脱氢酶（3β—HSD）活性、酶反应面积的影响。结果：DEHP作用于母鼠后，其雄性子代幼鼠体重和睾丸重量减轻，睾丸Leydig细胞形态、超微结构发生改变；高剂量组Leydig细胞数量明显增多；低、中剂量组睾酮合成关键酶3β-HSD酶活性下降，酶反应面积减小，但高剂量组在仔鼠出生后15d时酶活性降低[（吸光度值（0．154±0.011）1）8空白对照组（0．222±0.013），P〈0．01]，而酶反应面积增大[（6303．0±745．6）μm^2 vs 空白对照组（5091．4±214．4）μm^2，P〈0．01）]。结论：DEHP能影响新生雄性小鼠体重、睾丸重量、Leydig细胞的形态结构和3B—HSD活性，具有抗雄激素效应。展开更多
基金supported by the National Natural Science Foundation of China(No.82070872 and No.82370854 to JXL)Innovative and Entrepreneurial Team of Jiangsu Province(No.JSSCTD2021 to JXL)+1 种基金China Postdoctoral Science Foundation(2023M741790 to JP)Jiangsu Funding Program for Excellent Postdoctoral Talent(2023ZB558 to JP).
文摘Researchers commonly use cyclization recombination enzyme/locus of X-over P1(Cre/loxP)technology-based conditional gene knockouts of model mice to investigate the functional roles of genes of interest in Sertoli and Leydig cells within the testis.However,the shortcomings of these genetic tools include high costs,lengthy experimental periods,and limited accessibility for researchers.Therefore,exploring alternative gene silencing techniques is of great practical value.In this study,we employed adeno-associated virus(AAV)as a vector for gene silencing in Sertoli and Leydig cells.Our findings demonstrated that AAV serotypes 1,8,and 9 exhibited high infection efficiency in both types of testis cells.Importantly,we discovered that all three AAV serotypes exhibited exquisite specificity in targeting Sertoli cells via tubular injection while demonstrating remarkable selectivity in targeting Leydig cells via interstitial injection.We achieved cell-specific knockouts of the steroidogenic acute regulatory(Star)and luteinizing hormone/human chorionic gonadotropin receptor(Lhcgr)genes in Leydig cells,but not in Sertoli cells,using AAV9-single guide RNA(sgRNA)-mediated gene editing in Rosa26-LSL-Cas9mice.Knockdown of androgen receptor(Ar)gene expression in Sertoli cells of wild-type mice was achieved via tubular injection of AAV9-short hairpinRNA(shRNA)-mediated targeting.Our findings offer technical approaches for investigating gene function in Sertoli and Leydig cells through AAV9-mediated gene silencing.
文摘目的：探讨邻苯二甲酸二乙基己酯（DEHP）对新生小鼠睾丸及Leydig细胞形态结构及功能的影响。方法：DEHP分别以低、中、高3组剂量[100、200、500mg／（kg·d）]灌胃作用于怀孕12d到产后3d（GD12～PND3）的KM母鼠，观察DEHP对新生雄性仔鼠体重、睾丸重量、Leydig细胞形态结构和3β-羟基类固醇脱氢酶（3β—HSD）活性、酶反应面积的影响。结果：DEHP作用于母鼠后，其雄性子代幼鼠体重和睾丸重量减轻，睾丸Leydig细胞形态、超微结构发生改变；高剂量组Leydig细胞数量明显增多；低、中剂量组睾酮合成关键酶3β-HSD酶活性下降，酶反应面积减小，但高剂量组在仔鼠出生后15d时酶活性降低[（吸光度值（0．154±0.011）1）8空白对照组（0．222±0.013），P〈0．01]，而酶反应面积增大[（6303．0±745．6）μm^2 vs 空白对照组（5091．4±214．4）μm^2，P〈0．01）]。结论：DEHP能影响新生雄性小鼠体重、睾丸重量、Leydig细胞的形态结构和3B—HSD活性，具有抗雄激素效应。
