Direct Assay of Enzymes in Heme Biosynthesis for the Detection of Porphyrias by Tandem Mass Spectrometry. Uroporphyrinogen Decarboxylase and Coproporphyrinogen III Oxidase
摘要:
我们报告了血红素生物合成途径中尿卟啉原脱羧酶(UROD)和共卟啉原 III 氧化酶(CPO)的新测定方法。所开发的检测方法分别用于遗传性皮肤卟啉症和遗传性共卟啉症的临床诊断。电喷雾离子化串联质谱法用于监测由 UROD 催化的五卟啉原 I 或尿卟啉原 III 的脱羧过程,并通过测定共卟啉原 I 或 III 的生成量来确定人红细胞中酶的活性。经测定,五卟啉原 I 的 Km 值为 0.17 ± 0.03 μM。此外,还开发了一种质谱测定法,用于测定人淋巴细胞线粒体中 CPO 催化的共卟啉原 III 到原卟啉原 IX 的两步脱羧氧化反应(Km = 0.066 ± 0.009 μM)。这些检测方法具有良好的重现性,通过液-液萃取酶产物进行简单的处理,并采用市售底物和内标。
Direct Assay of Enzymes in Heme Biosynthesis for the Detection of Porphyrias by Tandem Mass Spectrometry. Uroporphyrinogen Decarboxylase and Coproporphyrinogen III Oxidase
摘要:
我们报告了血红素生物合成途径中尿卟啉原脱羧酶(UROD)和共卟啉原 III 氧化酶(CPO)的新测定方法。所开发的检测方法分别用于遗传性皮肤卟啉症和遗传性共卟啉症的临床诊断。电喷雾离子化串联质谱法用于监测由 UROD 催化的五卟啉原 I 或尿卟啉原 III 的脱羧过程,并通过测定共卟啉原 I 或 III 的生成量来确定人红细胞中酶的活性。经测定,五卟啉原 I 的 Km 值为 0.17 ± 0.03 μM。此外,还开发了一种质谱测定法,用于测定人淋巴细胞线粒体中 CPO 催化的共卟啉原 III 到原卟啉原 IX 的两步脱羧氧化反应(Km = 0.066 ± 0.009 μM)。这些检测方法具有良好的重现性,通过液-液萃取酶产物进行简单的处理,并采用市售底物和内标。
[EN] COMPOSITIONS AND METHODS FOR INHIBITING EXPRESSION OF THE ALAS1 GENE<br/>[FR] COMPOSITIONS ET MÉTHODES PERMETTANT D'INHIBER L'EXPRESSION DU GÈNE ALAS1
申请人:ALNYLAM PHARMACEUTICALS INC
公开号:WO2017048843A1
公开(公告)日:2017-03-23
The invention relates to double-stranded ribonucleic acid (dsRNA) compositions targeting the ALAS1 gene, and methods of using such dsRNA compositions to alter (e.g., inhibit) expression of ALAS1.
Various embodiments of the invention provide human enzymes (ENZM) and polynucleotides which identify and encode ENZM. Embodiments of the invention also provide expression vectors, host cells, antibodies, agonists, and antagonists. Other embodiments provide methods for diagnosing, treating, or preventing disorders associated with aberrant expression of ENZM.
USE OF CICLOPIROX FOR THE TREATMENT OF CONGENITAL ERYTHROPOIETIC PORPHYRIA
申请人:Asociación Centro de Investigación Cooperativa
en Biociencias - CIC bioGUNE
公开号:EP3315129A1
公开(公告)日:2018-05-02
The present invention relates to the use of the compound ciclopirox or a pharmaceutically acceptable salt or solvate thereof for the treatment and/or prevention of congenital erythropoietic porphyria (CEP).
USE OF CICLOPIROX AS A MODULATOR OF THE HEME GROUP BIOSYNTHESIS AND IN THE TREATMENT OF PORPHYRIAS AND OTHER DISEASES
申请人:Asociación Centro de Investigación Cooperativa
en Biociencias - CIC bioGUNE
公开号:EP3417860A1
公开(公告)日:2018-12-26
The present invention relates to the use of the compound ciclopirox or a pharmaceutically acceptable salt or solvate thereof for the treatment and/or prevention of a disease caused by dysregulated heme group biosynthesis, with the proviso that said disease is not congenital erythropoietic porphyria.
Compositions and methods for inhibiting expression of the ALAS1 gene
申请人:ALNYLAM PHARMACEUTICALS, INC.
公开号:US10119143B2
公开(公告)日:2018-11-06
The invention relates to double-stranded ribonucleic acid (dsRNA) compositions targeting the ALAS1 gene, and methods of using such dsRNA compositions to alter (e.g., inhibit) expression of ALAS1.