PXD021357-1

PXD021357 is an original dataset announced via ProteomeXchange.

Title	Sirtuin 3 regulates mitochondrial protein acetylation and metabolism in tubular epithelial cells during renal fibrosis
Description	Proximal tubular epithelial cells (TECs) demand high energy and rely on mitochondrial oxidative phosphorylation as a main energy source. However, this is disturbed in renal fibrosis. Acetylation is an important posttranslational modification for mitochondrial metabolism. The mitochondrial protein NAD-dependent deacetylase sirtuin 3 (SIRT3) regulates mitochondrial metabolic function. Therefore, we aimed to identify the changes in the acetylome in tubules from fibrotic kidneys and determine their association with mitochondria. We found that decreased SIRT3 expression was accompanied by increased acetylation in mitochondria that have separated from TECs during the early phase of renal fibrosis. SIRT3 knockout mice were susceptible to hyper-acetylated mitochondrial proteins and to severe renal fibrosis. The activation of SIRT3 by honokiol ameliorated acetylation and prevented renal fibrosis. Analysis of the acetylome in separated tubules using LC-MS/MS showed that most kidney proteins were hyper-acetylated after unilateral ureteral obstruction. The increased acetylated proteins with 26.76% were mitochondrial proteins which were mapped to a broad range of mitochondrial pathways including fatty acid β-oxidation, the TCA cycle and oxidative phosphorylation. Pyruvate dehydrogenase E1α (PDHE1α), which is the primary link between glycolysis and the TCA cycle, was hyper-acetylated at lysine 385 in TECs after TGF-β1 stimulation, and was regulated by SIRT3. Our findings showed that mitochondrial proteins involved in regulating energy metabolism were acetylated and targeted by SIRT3 in TECs. The deacetylation of PDHE1α by SIRT3 at lysine 385 plays a key role in metabolic reprogramming associated with renal fibrosis.
HostingRepository	PRIDE
AnnounceDate	2022-02-16
AnnouncementXML	Submission_2022-02-16_08:12:42.269.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Lei Jiang
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationList	acetylated residue
Instrument	Q Exactive

Revision	Datetime	Status	ChangeLog Entry
0	2020-09-08 05:59:25	ID requested
⏵ 1	2022-02-16 08:12:43	announced

Zhang Y, Wen P, Luo J, Ding H, Cao H, He W, Zen K, Zhou Y, Yang J, Jiang L, Sirtuin 3 regulates mitochondrial protein acetylation and metabolism in tubular epithelial cells during renal fibrosis. Cell Death Dis, 12(9):847(2021) [pubmed]

submitter keyword: Mouse, kidney, tubules, LC-MS/MS

Junwei Yang
contact affiliation	Center for Kidney Disease, 2nd Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu 210003, China
contact email	jwyang@njmu.edu.cn
lab head
Lei Jiang
contact affiliation	second Affiliated Hospital, Nanjing Medical University,
contact email	jianglei@njmu.edu.cn
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD021357
     1. Label: PRIDE project
     2. Name: Sirtuin 3 regulates mitochondrial protein acetylation and metabolism in tubular epithelial cells during renal fibrosis