학술논문
Dominant‐negative variant in SLC1A4 causes an autosomal dominant epilepsy syndrome
Document Type
Report
Author
Pujol‐Giménez, Jonai; Mirzaa, Ghayda; Blue, Elizabeth E.; Albano, Giuseppe; Miller, Danny E.; Allworth, Aimee; Bennett, James T.; Byers, Peter H.; Chanprasert, Sirisak; Chen, Jingheng; Doherty, Daniel; Folta, Andrew B.; Gillentine, Madelyn A.; Glass, Ian; Hing, Anne; Horike‐Pyne, Martha; Leppig, Kathleen A.; Parhin, Azma; Ranchalis, Jane; Raskind, Wendy H.; Rosenthal, Elisabeth A.; Schwarze, Ulrike; Sheppeard, Sam; Strohbehn, Samuel; Sybert, Virginia P.; Timms, Andrew; Wener, Mark; Bamshad, Michael J.; Leal, Suzanne M.; Nickerson, Deborah A.; Anderson, Peter; Bacus, Tamara J.; Brower, Katherine; Buckingham, Kati J.; Chong, Jessica X.; Sánchez, Diana Cornejo; Davis, Colleen P.; Davis, Chayna J.; Frazar, Christian D.; Gomeztagle‐Burgess, Katherine; Gordon, William W.; Hurless, Jameson R.; Jarvik, Gail P.; Johanson, Eric; Kolar, J. Thomas; Marvin, Colby T.; Mcgee, Sean; Mcgoldrick, Daniel J.; Mekonnen, Betselote; Nielsen, Patrick M.; Patterson, Karynne; Radhakrishnan, Aparna; Richardson, Matthew A.; Roote, Gwendolin T.; Ryke, Erica L.; Schrauwen, Isabelle; Shively, Kathryn M.; Smith, Joshua D.; Tackett, Monica; Wang, Gao; Weiss, Jeffrey M.; Wheeler, Marsha M.; Yi, Qian; Zhang, Xiaohong; Acosta, Maria T.; Adam, Margaret; Adams, David R.; Alvarez, Raquel L.; Alvey, Justin; Amendola, Laura; Andrews, Ashley; Ashley, Euan A.; Bacino, Carlos A.; Bademci, Guney; Balasubramanyam, Ashok; Baldridge, Dustin; Bale, Jim; Bamshad, Michael; Barbouth, Deborah; Bayrak‐Toydemir, Pinar; Beck, Anita; Beggs, Alan H.; Behrens, Edward; Bejerano, Gill; Bellen, Hugo J.; Bennett, Jimmy; Berg‐Rood, Beverly; Bernstein, Jonathan A.; Berry, Gerard T.; Bican, Anna; Bivona, Stephanie; Blue, Elizabeth; Bohnsack, John; Bonner, Devon; Botto, Lorenzo; Boyd, Brenna; Briere, Lauren C.; Brown, Gabrielle; Burke, Elizabeth A.; Burrage, Lindsay C.; Butte, Manish J.; Byers, Peter; Byrd, William E.; Carey, John; Carrasquillo, Olveen; Cassini, Thomas; Chang, Ta Chen Peter; Chao, Hsiao‐Tuan; Clark, Gary D.; Coakley, Terra R.; Cobban, Laurel A.; Cogan, Joy D.; Coggins, Matthew; Cole, F. Sessions; Colley, Heather A.; Cope, Heidi; Corona, Rosario; Craigen, William J.; Crouse, Andrew B.; Cunningham, Michael; D' Souza, Precilla; Dai, Hongzheng; Dasari, Surendra; Davis, Joie; Dayal, Jyoti G.; Dell'Angelica, Esteban C.; Dipple, Katrina; Dorrani, Naghmeh; Doss, Argenia L.; Douine, Emilie D.; Earl, Dawn; Eckstein, David J.; Emrick, Lisa T.; Eng, Christine M.; Falk, Marni; Fieg, Elizabeth L.; Fisher, Paul G.; Fogel, Brent L.; Forghani, Irman; Gahl, William A.; Gochuico, Bernadette; Goddard, Page C.; Godfrey, Rena A.; Golden‐Grant, Katie; Grajewski, Alana; Hadley, Don; Hahn, Sihoun; Halley, Meghan C.; Hamid, Rizwan; Hassey, Kelly; Hayes, Nichole; High, Frances; Hisama, Fuki M.; Holm, Ingrid A.; Hom, Jason; Huang, Alden; Hutchison, Sarah; Introne, Wendy; Isasi, Rosario; Izumi, Kosuke; Jamal, Fariha; Jarvik, Jeffrey; Jayadev, Suman; Jean‐Marie, Orpa; Jobanputra, Vaidehi; Karaviti, Lefkothea; Ketkar, Shamika; Kiley, Dana; Kilich, Gonench; Kobren, Shilpa N.; Kohane, Isaac S.; Kohler, Jennefer N.; Korrick, Susan; Kozuira, Mary; Krakow, Deborah; Krasnewich, Donna M.; Kravets, Elijah; Lalani, Seema R.; Lam, Byron; Lam, Christina; Lanpher, Brendan C.; Lanza, Ian R.; Leblanc, Kimberly; Lee, Brendan H.; Levitt, Roy; Lewis, Richard A.; Liu, Pengfei; Liu, Xue Zhong; Longo, Nicola; Loo, Sandra K.; Loscalzo, Joseph; Maas, Richard L.; Macnamara, Ellen F.; Macrae, Calum A.; Maduro, Valerie V.; Maghiro, Audreystephannie; Mahoney, Rachel; Malicdan, May Christine V.; Mamounas, Laura A.; Manolio, Teri A.; Mao, Rong; Maravilla, Kenneth; Marom, Ronit; Marth, Gabor; Martin, Beth A.; Martin, Martin G.; Martínez‐Agosto, Julian A.; Marwaha, Shruti; Mccauley, Jacob; Mcconkie‐Rosell, Allyn; Mccray, Alexa T.; Mcgee, Elisabeth; Mefford, Heather; Merritt, J. Lawrence; Might, Matthew; Morava, Eva; Moretti, Paolo; Mulvihill, John; Nakano‐Okuno, Mariko; Nelson, Stanley F.; Newman, John H.; Nicholas, Sarah K.; Nickerson, Deborah; Nieves‐Rodriguez, Shirley; Novacic, Donna; Oglesbee, Devin; Orengo, James P.; Pace, Laura; Pak, Stephen; Pallais, J. Carl; Palmer, Christina G.S.; Papp, Jeanette C.; Parker, Neil H.; Phillips, John A.; Posey, Jennifer E.; Potocki, Lorraine; Swerdzewski, Barbara N. Pusey; Quinlan, Aaron; Rao, Deepak A.; Raper, Anna; Raskind, Wendy; Renteria, Genecee; Reuter, Chloe M.; Rives, Lynette; Robertson, Amy K.; Rodan, Lance H.; Rosenfeld, Jill A.; Rosenwasser, Natalie; Rossignol, Francis; Ruzhnikov, Maura; Sacco, Ralph; Sampson, Jacinda B.; Saporta, Mario; Schaechter, Judy; Schedl, Timothy; Schoch, Kelly; Scott, Daryl A.; Scott, C. Ron; Shashi, Vandana; Shin, Jimann; Silverman, Edwin K.; Sinsheimer, Janet S.; Sisco, Kathy; Smith, Edward C.; Smith, Kevin S.; Solnica‐Krezel, Lilianna; Solomon, Ben; Spillmann, Rebecca C.; Stoler, Joan M.; Sullivan, Kathleen; Sullivan, Jennifer A.; Sun, Angela; Sutton, Shirley; Sweetser, David A.; Sybert, Virginia; Tabor, Holly K.; Tan, Queenie K.‐G.; Tan, Amelia L.M.; Tekin, Mustafa; Telischi, Fred; Thorson, Willa; Tifft, Cynthia J.; Toro, Camilo; Tran, Alyssa A.; Ungar, Rachel A.; Urv, Tiina K.; Vanderver, Adeline; Velinder, Matt; Viskochil, Dave; Vogel, Tiphanie P.; Wahl, Colleen E.; Walker, Melissa; Wallace, Stephanie; Walley, Nicole M.; Wambach, Jennifer; Wan, Jijun; Wang, Lee‐Kai; Wangler, Michael F.; Ward, Patricia A.; Wegner, Daniel; Hubshman, Monika W.; Wenger, Tara; Westerfield, Monte; Wheeler, Matthew T.; Whitlock, Jordan; Wolfe, Lynne A.; Worley, Kim; Xiao, Changrui; Yamamoto, Shinya; Yang, John; Zhang, Zhe; Zuchner, Stephan; Dipple, Katrina M.; Hediger, Matthias A.; Stergachis, Andrew B.
Source
Annals of Clinical and Translational Neurology. June 2023, Vol. 10 Issue 6, p1046, 1053 p.
Subject
Language
English
Abstract
Introduction Serine synthesis is confined to glia within the brain and is shuttled to neurons via SLC1A4, a dedicated neutral amino acid transporter. Disruptions in this process lead to SPATCCM [...]
: SLC1A4 is a trimeric neutral amino acid transporter essential for shuttling L‐serine from astrocytes into neurons. Individuals with biallelic variants in SLC1A4 are known to have spastic tetraplegia, thin corpus callosum, and progressive microcephaly (SPATCCM) syndrome, but individuals with heterozygous variants are not thought to have disease. We identify an 8‐year‐old patient with global developmental delay, spasticity, epilepsy, and microcephaly who has a de novo heterozygous three amino acid duplication in SLC1A4 (L86_M88dup). We demonstrate that L86_M88dup causes a dominant‐negative N‐glycosylation defect of SLC1A4, which in turn reduces the plasma membrane localization of SLC1A4 and the transport rate of SLC1A4 for L‐serine.
: SLC1A4 is a trimeric neutral amino acid transporter essential for shuttling L‐serine from astrocytes into neurons. Individuals with biallelic variants in SLC1A4 are known to have spastic tetraplegia, thin corpus callosum, and progressive microcephaly (SPATCCM) syndrome, but individuals with heterozygous variants are not thought to have disease. We identify an 8‐year‐old patient with global developmental delay, spasticity, epilepsy, and microcephaly who has a de novo heterozygous three amino acid duplication in SLC1A4 (L86_M88dup). We demonstrate that L86_M88dup causes a dominant‐negative N‐glycosylation defect of SLC1A4, which in turn reduces the plasma membrane localization of SLC1A4 and the transport rate of SLC1A4 for L‐serine.