类固醇生成因子(SF-1,NR5A1)是在性腺及肾上腺发育过程中起关键调控作用的转录因子。NR5A1基因突变是性发育异常(disorders of sex development,DSD)常见病因之一,目前临床报道的病例多为杂合突变。该基因突变患者临床表型复杂,早期报...类固醇生成因子(SF-1,NR5A1)是在性腺及肾上腺发育过程中起关键调控作用的转录因子。NR5A1基因突变是性发育异常(disorders of sex development,DSD)常见病因之一,目前临床报道的病例多为杂合突变。该基因突变患者临床表型复杂,早期报道的患者表现为不同程度的46,XY性腺发育不良,近年发现该基因突变与男性无精症或女性的卵巢早衰有关,多数患者无肾上腺皮质功能不全。目前认为患者临床表型异质性,可能与不同基因突变对转录活性的功能影响、下游靶基因(如SOX9等)基因剂量效应以及寡基因突变等的遗传背景等相关。通过对NR5A1突变的基因型和相关表型开展研究,有助于人们深入理解性腺发育的过程及其调控机制。展开更多
Hormone replacement therapy is necessary for patients with adrenal and gonadal failure.Steroid hormone treatment is also employed in aging people for sex hormone deficiency.These patients undergo such therapies,which ...Hormone replacement therapy is necessary for patients with adrenal and gonadal failure.Steroid hormone treatment is also employed in aging people for sex hormone deficiency.These patients undergo such therapies,which have associated risks,for their entire life.Stem cells represent an innovative tool for tissue regeneration and the possibility of solving these problems.Among various stem cell types,mesenchymal stem cells have the potential to differentiate into steroidogenic cells both in vivo and in vitro.In particular,they can effectively be differentiated into steroidogenic cells by expressing nuclear receptor 5A subfamily proteins(steroidogenic factor-1 and liver receptor homolog-1)with the aid of cAMP.This approach will provide a source of cells for future regenerative medicine for the treatment of diseases caused by steroidogenesis deficiencies.It can also represent a useful tool for studying the molecular mechanisms of steroidogenesis and its related diseases.展开更多
采用噬菌体展示肽库技术筛选雷公藤内酯醇的靶蛋白,得到了一个肽段,并通过酶联免疫吸附(ELISA)和免疫共沉淀验证了该片段对雷公藤内酯醇的结合特异性。用Basic Local Alignment Search Tool(BLAST)进行序列对比后,找到了77个匹配序列,...采用噬菌体展示肽库技术筛选雷公藤内酯醇的靶蛋白,得到了一个肽段,并通过酶联免疫吸附(ELISA)和免疫共沉淀验证了该片段对雷公藤内酯醇的结合特异性。用Basic Local Alignment Search Tool(BLAST)进行序列对比后,找到了77个匹配序列,其中最为匹配的序列是人类类固醇生成因子-1(hSF-1),因此hSF-1可能是雷公藤内酯醇的一个潜在受体。在大肠杆菌中表达纯化了hSF-1的配体结合域(LBD),荧光光谱实验表明雷公藤内酯醇对hSF-1-LBD有荧光淬灭作用、等温滴定量热(ITC)实验表明雷公藤内酯醇与hSF-1-LBD发生焓驱动的特异性结合,表面等离子体共振(SPR)实验表明雷公藤内酯醇可以与hSF-1-LBD剂量依赖性结合,这些都证实了hSF-1与雷公藤内酯醇存在特异性相互作用。展开更多
文摘类固醇生成因子(SF-1,NR5A1)是在性腺及肾上腺发育过程中起关键调控作用的转录因子。NR5A1基因突变是性发育异常(disorders of sex development,DSD)常见病因之一,目前临床报道的病例多为杂合突变。该基因突变患者临床表型复杂,早期报道的患者表现为不同程度的46,XY性腺发育不良,近年发现该基因突变与男性无精症或女性的卵巢早衰有关,多数患者无肾上腺皮质功能不全。目前认为患者临床表型异质性,可能与不同基因突变对转录活性的功能影响、下游靶基因(如SOX9等)基因剂量效应以及寡基因突变等的遗传背景等相关。通过对NR5A1突变的基因型和相关表型开展研究,有助于人们深入理解性腺发育的过程及其调控机制。
基金Supported by Ministry of Education,Culture,Sports,Science and Technology of Japan,No.23590329the Terumo Life Science Foundationthe Smoking Research Foundation
文摘Hormone replacement therapy is necessary for patients with adrenal and gonadal failure.Steroid hormone treatment is also employed in aging people for sex hormone deficiency.These patients undergo such therapies,which have associated risks,for their entire life.Stem cells represent an innovative tool for tissue regeneration and the possibility of solving these problems.Among various stem cell types,mesenchymal stem cells have the potential to differentiate into steroidogenic cells both in vivo and in vitro.In particular,they can effectively be differentiated into steroidogenic cells by expressing nuclear receptor 5A subfamily proteins(steroidogenic factor-1 and liver receptor homolog-1)with the aid of cAMP.This approach will provide a source of cells for future regenerative medicine for the treatment of diseases caused by steroidogenesis deficiencies.It can also represent a useful tool for studying the molecular mechanisms of steroidogenesis and its related diseases.
文摘采用噬菌体展示肽库技术筛选雷公藤内酯醇的靶蛋白,得到了一个肽段,并通过酶联免疫吸附(ELISA)和免疫共沉淀验证了该片段对雷公藤内酯醇的结合特异性。用Basic Local Alignment Search Tool(BLAST)进行序列对比后,找到了77个匹配序列,其中最为匹配的序列是人类类固醇生成因子-1(hSF-1),因此hSF-1可能是雷公藤内酯醇的一个潜在受体。在大肠杆菌中表达纯化了hSF-1的配体结合域(LBD),荧光光谱实验表明雷公藤内酯醇对hSF-1-LBD有荧光淬灭作用、等温滴定量热(ITC)实验表明雷公藤内酯醇与hSF-1-LBD发生焓驱动的特异性结合,表面等离子体共振(SPR)实验表明雷公藤内酯醇可以与hSF-1-LBD剂量依赖性结合,这些都证实了hSF-1与雷公藤内酯醇存在特异性相互作用。
