TY - JOUR
T1 - LC3 lipidation is essential for TFEB activation during the lysosomal damage response to kidney injury
AU - Nakamura, Shuhei
AU - Shigeyama, Saki
AU - Minami, Satoshi
AU - Shima, Takayuki
AU - Akayama, Shiori
AU - Matsuda, Tomoki
AU - Esposito, Alessandra
AU - Napolitano, Gennaro
AU - Kuma, Akiko
AU - Namba-Hamano, Tomoko
AU - Nakamura, Jun
AU - Yamamoto, Kenichi
AU - Sasai, Miwa
AU - Tokumura, Ayaka
AU - Miyamoto, Mika
AU - Oe, Yukako
AU - Fujita, Toshiharu
AU - Terawaki, Seigo
AU - Takahashi, Atsushi
AU - Hamasaki, Maho
AU - Yamamoto, Masahiro
AU - Okada, Yukinori
AU - Komatsu, Masaaki
AU - Nagai, Takeharu
AU - Takabatake, Yoshitsugu
AU - Xu, Haoxing
AU - Isaka, Yoshitaka
AU - Ballabio, Andrea
AU - Yoshimori, Tamotsu
N1 - Publisher Copyright:
© 2020, The Author(s), under exclusive licence to Springer Nature Limited.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - Sensing and clearance of dysfunctional lysosomes is critical for cellular homeostasis. Here we show that transcription factor EB (TFEB)—a master transcriptional regulator of lysosomal biogenesis and autophagy—is activated during the lysosomal damage response, and its activation is dependent on the function of the ATG conjugation system, which mediates LC3 lipidation. In addition, lysosomal damage triggers LC3 recruitment on lysosomes, where lipidated LC3 interacts with the lysosomal calcium channel TRPML1, facilitating calcium efflux essential for TFEB activation. Furthermore, we demonstrate the presence and importance of this TFEB activation mechanism in kidneys in a mouse model of oxalate nephropathy accompanying lysosomal damage. A proximal tubule-specific TFEB-knockout mouse exhibited progression of kidney injury induced by oxalate crystals. Together, our results reveal unexpected mechanisms of TFEB activation by LC3 lipidation and their physiological relevance during the lysosomal damage response.
AB - Sensing and clearance of dysfunctional lysosomes is critical for cellular homeostasis. Here we show that transcription factor EB (TFEB)—a master transcriptional regulator of lysosomal biogenesis and autophagy—is activated during the lysosomal damage response, and its activation is dependent on the function of the ATG conjugation system, which mediates LC3 lipidation. In addition, lysosomal damage triggers LC3 recruitment on lysosomes, where lipidated LC3 interacts with the lysosomal calcium channel TRPML1, facilitating calcium efflux essential for TFEB activation. Furthermore, we demonstrate the presence and importance of this TFEB activation mechanism in kidneys in a mouse model of oxalate nephropathy accompanying lysosomal damage. A proximal tubule-specific TFEB-knockout mouse exhibited progression of kidney injury induced by oxalate crystals. Together, our results reveal unexpected mechanisms of TFEB activation by LC3 lipidation and their physiological relevance during the lysosomal damage response.
UR - http://www.scopus.com/inward/record.url?scp=85091610270&partnerID=8YFLogxK
U2 - 10.1038/s41556-020-00583-9
DO - 10.1038/s41556-020-00583-9
M3 - Article
C2 - 32989250
AN - SCOPUS:85091610270
SN - 1465-7392
VL - 22
SP - 1252
EP - 1263
JO - Nature Cell Biology
JF - Nature Cell Biology
IS - 10
ER -