PMID- 37202505 OWN - NLM STAT- MEDLINE DCOM- 20230630 LR - 20230702 IS - 1476-5403 (Electronic) IS - 1350-9047 (Print) IS - 1350-9047 (Linking) VI - 30 IP - 7 DP - 2023 Jul TI - USP28 controls SREBP2 and the mevalonate pathway to drive tumour growth in squamous cancer. PG - 1710-1725 LID - 10.1038/s41418-023-01173-6 [doi] AB - SREBP2 is a master regulator of the mevalonate pathway (MVP), a biosynthetic process that drives the synthesis of dolichol, heme A, ubiquinone and cholesterol and also provides substrates for protein prenylation. Here, we identify SREBP2 as a novel substrate for USP28, a deubiquitinating enzyme that is frequently upregulated in squamous cancers. Our results show that silencing of USP28 reduces expression of MVP enzymes and lowers metabolic flux into this pathway. We also show that USP28 binds to mature SREBP2, leading to its deubiquitination and stabilisation. USP28 depletion rendered cancer cells highly sensitive to MVP inhibition by statins, which was rescued by the addition of geranyl-geranyl pyrophosphate. Analysis of human tissue microarrays revealed elevated expression of USP28, SREBP2 and MVP enzymes in lung squamous cell carcinoma (LSCC) compared to lung adenocarcinoma (LADC). Moreover, CRISPR/Cas-mediated deletion of SREBP2 selectively attenuated tumour growth in a KRas/p53/LKB1 mutant mouse model of lung cancer. Finally, we demonstrate that statins synergise with a dual USP28/25 inhibitor to reduce viability of SCC cells. Our findings suggest that combinatorial targeting of MVP and USP28 could be a therapeutic strategy for the treatment of squamous cell carcinomas. CI - (c) 2023. The Author(s). FAU - Maier, Carina R AU - Maier CR AD - German Cancer Research Center, Division of Tumor Metabolism and Microenvironment, Im Neuenheimer Feld 581, 69120, Heidelberg, Germany. AD - Protein Stability and Cancer Group, Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Am Hubland, 97074, Wurzburg, Germany. FAU - Hartmann, Oliver AU - Hartmann O AUID- ORCID: 0000-0002-5663-645X AD - Protein Stability and Cancer Group, Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Am Hubland, 97074, Wurzburg, Germany. FAU - Prieto-Garcia, Cristian AU - Prieto-Garcia C AUID- ORCID: 0000-0002-7576-1061 AD - Protein Stability and Cancer Group, Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Am Hubland, 97074, Wurzburg, Germany. AD - Institute of Biochemistry II, Goethe University Frankfurt, Theodor-Stern-Kai 7, Haus 75, 60590, Frankfurt am Main, Germany. FAU - Al-Shami, Kamal M AU - Al-Shami KM AD - German Cancer Research Center, Division of Tumor Metabolism and Microenvironment, Im Neuenheimer Feld 581, 69120, Heidelberg, Germany. FAU - Schlicker, Lisa AU - Schlicker L AD - German Cancer Research Center, Division of Tumor Metabolism and Microenvironment, Im Neuenheimer Feld 581, 69120, Heidelberg, Germany. FAU - Vogel, Felix C E AU - Vogel FCE AD - German Cancer Research Center, Division of Tumor Metabolism and Microenvironment, Im Neuenheimer Feld 581, 69120, Heidelberg, Germany. FAU - Haid, Silke AU - Haid S AD - German Cancer Research Center, Division of Tumor Metabolism and Microenvironment, Im Neuenheimer Feld 581, 69120, Heidelberg, Germany. FAU - Klann, Kevin AU - Klann K AD - Institute of Biochemistry II, Goethe University Frankfurt, Theodor-Stern-Kai 7, Haus 75, 60590, Frankfurt am Main, Germany. FAU - Buck, Viktoria AU - Buck V AD - Institute of Pathology, Julius Maximilians University and Comprehensive Cancer Center (CCC) Mainfranken, Josef-Schneider-Strasse 2, 97080, Wurzburg, Germany. FAU - Munch, Christian AU - Munch C AUID- ORCID: 0000-0003-3832-090X AD - Institute of Biochemistry II, Goethe University Frankfurt, Theodor-Stern-Kai 7, Haus 75, 60590, Frankfurt am Main, Germany. FAU - Schmitz, Werner AU - Schmitz W AD - Theodor Boveri Institute, Department of Biochemistry and Molecular Biology, Biocenter, University of Wurzburg, 97074, Wurzburg, Germany. FAU - Einig, Elias AU - Einig E AUID- ORCID: 0000-0001-7142-1281 AD - Internal Medicine VIII-Clinical Tumor Biology, University of Tubingen, Otfried-Muller-Strasse 14, 72076, Tubingen, Germany. FAU - Krenz, Bastian AU - Krenz B AUID- ORCID: 0000-0003-1889-3022 AD - Theodor Boveri Institute, Department of Biochemistry and Molecular Biology, Biocenter, University of Wurzburg, 97074, Wurzburg, Germany. FAU - Calzado, Marco A AU - Calzado MA AUID- ORCID: 0000-0002-5338-535X AD - Instituto Maimonides de Investigacion Biomedica de Cordoba (IMIBIC), Cordoba, Spain. AD - Departamento de Biologia Celular, Fisiologia e Inmunologia, Universidad de Cordoba, Cordoba, Spain. AD - Hospital Universitario Reina Sofia, Cordoba, Spain. FAU - Eilers, Martin AU - Eilers M AUID- ORCID: 0000-0002-0376-6533 AD - Theodor Boveri Institute, Department of Biochemistry and Molecular Biology, Biocenter, University of Wurzburg, 97074, Wurzburg, Germany. FAU - Popov, Nikita AU - Popov N AD - Internal Medicine VIII-Clinical Tumor Biology, University of Tubingen, Otfried-Muller-Strasse 14, 72076, Tubingen, Germany. FAU - Rosenfeldt, Mathias T AU - Rosenfeldt MT AUID- ORCID: 0000-0001-7650-8458 AD - Institute of Pathology, Julius Maximilians University and Comprehensive Cancer Center (CCC) Mainfranken, Josef-Schneider-Strasse 2, 97080, Wurzburg, Germany. FAU - Diefenbacher, Markus E AU - Diefenbacher ME AUID- ORCID: 0000-0002-7402-7949 AD - Protein Stability and Cancer Group, Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Am Hubland, 97074, Wurzburg, Germany. markus.diefenbacher@uni-wuerzburg.de. FAU - Schulze, Almut AU - Schulze A AUID- ORCID: 0000-0002-8199-6422 AD - German Cancer Research Center, Division of Tumor Metabolism and Microenvironment, Im Neuenheimer Feld 581, 69120, Heidelberg, Germany. almut.schulze@dkfz-heidelberg.de. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230518 PL - England TA - Cell Death Differ JT - Cell death and differentiation JID - 9437445 RN - S5UOB36OCZ (Mevalonic Acid) RN - 0 (Hydroxymethylglutaryl-CoA Reductase Inhibitors) RN - EC 3.4.19.12 (Ubiquitin Thiolesterase) RN - 0 (USP28 protein, human) SB - IM MH - Mice MH - Animals MH - Humans MH - Mevalonic Acid/metabolism MH - *Hydroxymethylglutaryl-CoA Reductase Inhibitors MH - *Carcinoma, Non-Small-Cell Lung MH - *Lung Neoplasms/genetics MH - *Carcinoma, Squamous Cell/genetics MH - Ubiquitin Thiolesterase/metabolism PMC - PMC10307777 COIS- The authors declare no competing interests. EDAT- 2023/05/19 01:04 MHDA- 2023/06/30 06:42 PMCR- 2023/05/18 CRDT- 2023/05/18 23:21 PHST- 2022/12/20 00:00 [received] PHST- 2023/04/25 00:00 [accepted] PHST- 2023/04/16 00:00 [revised] PHST- 2023/06/30 06:42 [medline] PHST- 2023/05/19 01:04 [pubmed] PHST- 2023/05/18 23:21 [entrez] PHST- 2023/05/18 00:00 [pmc-release] AID - 10.1038/s41418-023-01173-6 [pii] AID - 1173 [pii] AID - 10.1038/s41418-023-01173-6 [doi] PST - ppublish SO - Cell Death Differ. 2023 Jul;30(7):1710-1725. doi: 10.1038/s41418-023-01173-6. Epub 2023 May 18.