Inhibition of mitochondrial LonP1 protease by allosteric blockade of ATP binding and hydrolysis via CDDO and its derivatives.
Inhibition of mitochondrial LonP1 protease by allosteric blockade of ATP binding and hydrolysis via CDDO and its derivatives.
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DOI：
10.1016/j.jbc.2022.101719
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发表时间：
2022-03
期刊：
影响因子：
--
通讯作者：
Suzuki CK
中科院分区：
文献类型：
--
作者：
Lee J;Pandey AK;Venkatesh S;Thilagavathi J;Honda T;Singh K;Suzuki CK
The mitochondrial protein LonP1 is an ATP-dependent protease that mitigates cell stress and calibrates mitochondrial metabolism and energetics. Biallelic mutations in the LONP1 gene are known to cause a broad spectrum of diseases, and LonP1 dysregulation is also implicated in cancer and age-related disorders. Despite the importance of LonP1 in health and disease, specific inhibitors of this protease are unknown. Here, we demonstrate that 2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oic acid (CDDO) and its -methyl and -imidazole derivatives reversibly inhibit LonP1 by a noncompetitive mechanism, blocking ATP-hydrolysis and thus proteolysis. By contrast, we found that CDDO-anhydride inhibits the LonP1 ATPase competitively. Docking of CDDO derivatives in the cryo-EM structure of LonP1 shows these compounds bind a hydrophobic pocket adjacent to the ATP-binding site. The binding site of CDDO derivatives was validated by amino acid substitutions that increased LonP1 inhibition and also by a pathogenic mutation that causes cerebral, ocular, dental, auricular and skeletal (CODAS) syndrome, which ablated inhibition. CDDO failed to inhibit the ATPase activity of the purified 26S proteasome, which like LonP1 belongs to the AAA+ superfamily of ATPases Associated with diverse cellular Activities, suggesting that CDDO shows selectivity within this family of ATPases. Furthermore, we show that noncytotoxic concentrations of CDDO derivatives in cultured cells inhibited LonP1, but not the 26S proteasome. Taken together, these findings provide insights for future development of LonP1-specific inhibitors with chemotherapeutic potential.
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DOI：
10.1056/nejmoa1306033
发表时间：
2013-12-26
期刊：
The New England journal of medicine
影响因子：
--
作者：
de Zeeuw D;Akizawa T;Audhya P;Bakris GL;Chin M;Christ-Schmidt H;Goldsberry A;Houser M;Krauth M;Lambers Heerspink HJ;McMurray JJ;Meyer CJ;Parving HH;Remuzzi G;Toto RD;Vaziri ND;Wanner C;Wittes J;Wrolstad D;Chertow GM;BEACON Trial Investigators
通讯作者：
BEACON Trial Investigators
影响因子：
14.5
作者：
Deng P;Haynes CM
通讯作者：
Haynes CM
影响因子：
9
作者：
通讯作者：
--
影响因子：
4
作者：
Graves, Paul R.;Aponte-Collazo, Lucas J.;Graves, Lee M.
通讯作者：
Graves, Lee M.
DOI：
10.1073/pnas.0500815102
发表时间：
2005-03-22
影响因子：
11.1
作者：
Dinkova-Kostova, AT;Liby, KT;Talalay, P
通讯作者：
Talalay, P