Jia Rao, Shazia Ashraf, Weizhen Tan, Amelie T van der Ven, Heon Yung Gee, Daniela A Braun, Krisztina Fehér, Sudeep P George, Amin Esmaeilniakooshkghazi, Won-Il Choi, Tilman Jobst-Schwan, Ronen Schneider, Johanna Magdalena Schmidt, Eugen Widmeier, Jillian K Warejko, Tobias Hermle, David Schapiro, Svjetlana Lovric, Shirlee Shril, Ankana Daga, Ahmet Nayir, Mohan Shenoy, Yincent Tse, Martin Bald, Udo Helmchen, Sevgi Mir, Afig Berdeli, Jameela A Kari, Sherif El Desoky, Neveen A Soliman, Arvind Bagga, Shrikant Mane, Mohamad A Jairajpuri, Richard P Lifton, Seema Khurana, Jose C Martins, Friedhelm Hildebrandt
Steroid-resistant nephrotic syndrome (SRNS) is a frequent cause of chronic kidney disease. Here, we identified recessive mutations in the gene encoding the actin-binding protein advillin (AVIL) in 3 unrelated families with SRNS. While all AVIL mutations resulted in a marked loss of its actin-bundling ability, truncation of AVIL also disrupted colocalization with F-actin, thereby leading to impaired actin binding and severing. Additionally, AVIL colocalized and interacted with the phospholipase enzyme PLCE1 and with the ARP2/3 actin-modulating complex...
December 1, 2017: Journal of Clinical Investigation