Endosomal trafficking defects in patient cells with KIAA1109 biallelic variants

作     者：Megan S.Kane Callie J.Diamonstein Natalie Hauser John F.Deeken John E.Niederhuber Thierry Vilboux 

作者机构：Inova Translational Medicine InstituteInova Health SystemFairfaxVAUnited States Department of MedicineVirginia Commonwealth UniversityRichmondVAUnited States Department of Public Health SciencesUniversity of Virginia School of MedicineCharlottesvilleVAUnited States Department of Oncology and SurgeryJohns Hopkins University School of MedicineBaltimoreMDUnited States 

出 版 物：《Genes & Diseases》 (基因与疾病（英文）)

年 卷 期：2019年第6卷第1期

页      面：56-67页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 1002[医学-临床医学] 1001[医学-基础医学(可授医学、理学学位)] 0703[理学-化学] 100214[医学-肿瘤学] 10[医学] 

基　　金：NICU PICU Inova Health System 

主　　题：Cilia Endocytosis KIAA1109 Neurological malformation Vesicular trafficking 

摘      要：The uncharacterized gene KIAA1109 has recently been associated with a congenital neurological malformation disorder that variably presents with arthrogryposis,craniofacial and/or cardiac *** have identified two additional patients with compound heterozygous KIAA1109 variants presenting with the same neurological *** mechanism whereby KIAA1109 loss of function causes this spectrum of disorders was the primary focus of our *** hypothesized that KIAA1109 function could be conserved relative to the fly gene tweek and examined endocytosis and endosome recycling in patient ***,we examined the structure of the cytoskeleton and cilia based on functional overlap with endocytosis and several known etiologies for neuronal migration *** primary dermal fibroblasts from one patient and a healthy donor,we performed immunofluorescence and endocytosis assays to examine the endosomal,cytoskeletal,and ciliary cellular *** found notable abnormalities in endosomal trafficking and endosome recycling *** also observed changes in the actin cytoskeleton and cilia structural *** conclude that the function of KIAA1109 in humans may indeed overlap with the function of the Drosophila ortholog,resulting in perturbations to endosomal trafficking and the actin *** alterations have ripple effects,altering many pathways that are critical for proper neuronal migration and embryonic development.