Mutations in the human SC4MOL gene encoding a methyl sterol oxidase cause psoriasiform dermatitis, microcephaly, and developmental delay
作者:Miao He、Lisa E. Kratz、Joshua J. Michel、Abbe N. Vallejo、Laura Ferris、Richard I. Kelley、Jacqueline J. Hoover、Drazen Jukic、K. Michael Gibson、Lynne A. Wolfe、Dhanya Ramachandran、Michael E. Zwick、Jerry Vockley
DOI:10.1172/jci42650
日期:2011.3.1
Defects in cholesterol synthesis result in a wide variety of symptoms, from neonatal lethality to the relatively mild dysmorphic features and developmental delay found in individuals with Smith-Lemli-Opitz syndrome. We report here the identification of mutations in sterol-C4-methyl oxidase-like gene (SC4MOL) as the cause of an autosomal recessive syndrome in a human patient with psoriasiform dermatitis, arthralgias, congenital cataracts, microcephaly, and developmental delay. This gene encodes a sterol-C4-methyl oxidase (SMO), which catalyzes demethylation of C4-methylsterols in the cholesterol synthesis pathway. C4-Methylsterols are meiosis-activating sterols (MASs). They exist at high concentrations in the testis and ovary and play roles in meiosis activation. In this study, we found that an accumulation of MASs in the patient led to cell overproliferation in both skin and blood. SMO deficiency also substantially altered immunocyte phenotype and in vitro function. MASs serve as ligands for liver X receptors alpha and beta (LXR alpha and LXR beta), which are important in regulating not only lipid transport in the epidermis, but also innate and adaptive immunity. Deficiency of SMO represents a biochemical defect in the cholesterol synthesis pathway, the clinical spectrum of which remains to be defined.
MODULATEURS DE SC4MOL DANS LE TRAITEMENT DE L'ACNÉ OU DE L'HYPERSÉBORRHÉE
申请人:GALDERMA RESEARCH & DEVELOPMENT
公开号:EP2046974A2
公开(公告)日:2009-04-15
[EN] MODULATORS OF SC4MOL IN THE TREATMENT OF ACNE OR OF HYPERSEBORRHOEA<br/>[FR] MODULATEURS DE SC4MOL DANS LE TRAITEMENT DE L'ACNÉ OU DE L'HYPERSÉBORRHÉE
申请人:GALDERMA RES & DEV
公开号:WO2008009855A2
公开(公告)日:2008-01-24
[EN] The invention relates to an in vitro method of screening for candidate compounds for the preventive or curative treatment of acne, comprising the determination of the ability of a compound to modulate the expression or the activity of sterol-C4-methyl oxidase (SC4MOL), and also to the use of modulators of the expression or of the activity of this enzyme for the treatment of acne or of skin disorders associated with hyperseborrhoea. The invention also relates to methods for the diagnosis or prognosis, in vitro, of these pathologies. [FR] L'invention concerne une méthode in vitro de criblage de composés candidats pour le traitement préventif ou curatif de l'acné, comprenant la détermination de la capacité d'un composé à moduler l'expression ou l'activité de la C-4 méthyl stérol oxydase (SC4MOL), ainsi que l'utilisation de modulateurs de l'expression ou de l'activité de cette enzyme pour le traitement de l'acné ou des désordres cutanés associés à une hyperséborrhée. L'invention concerne aussi des méthodes de diagnostic ou pronostic in vitro de ces pathologies.