TY  - JOUR
AU  - Brown, Hawley
AU  - Chung, Mia
AU  - Üffing, Alina
AU  - Batistatou, Nefeli
AU  - Tsang, Tiffany
AU  - Doskocil, Samantha
AU  - Mao, Weiqun
AU  - Willbold, Dieter
AU  - Bast, Robert C.
AU  - Lu, Zhen
AU  - Weiergräber, Oliver H.
AU  - Kritzer, Joshua A.
TI  - Structure-Based Design of Stapled Peptides That Bind GABARAP and Inhibit Autophagy
JO  - Journal of the American Chemical Society
VL  - 144
IS  - 32
SN  - 0002-7863
CY  - Washington, DC
PB  - American Chemical Society
M1  - FZJ-2022-03149
SP  - 14687 - 14697
PY  - 2022
AB  - The LC3/GABARAP family of proteins are involved in nearly every stage of autophagy. Inhibition of LC3/GABARAP proteins is a promising approach to blocking autophagy, which sensitizes advanced cancers to DNA-damaging chemotherapy. Here, we report the structure-based design of stapled peptides that inhibit GABARAP with nanomolar affinities. Small changes in staple structure produced stapled peptides with very different binding modes and functional differences in LC3/GABARAP paralog selectivity, ranging from highly GABARAP-specific to broad inhibition of both subfamilies. The stapled peptides exhibited considerable cytosolic penetration and resistance to biological degradation. They also reduced autophagic flux in cultured ovarian cancer cells and sensitized ovarian cancer cells to cisplatin. These small, potent stapled peptides represent promising autophagy-modulating compounds that can be developed as novel cancer therapeutics and novel mediators of targeted protein degradation.
LB  - PUB:(DE-HGF)16
C6  - 35917476
UR  - <Go to ISI:>//WOS:000836234100001
DO  - DOI:10.1021/jacs.2c04699
UR  - https://juser.fz-juelich.de/record/909359
ER  -