Related Experiment Video

Updated: Jul 17, 2026

Deacetylation Assays to Unravel the Interplay between Sirtuins (SIRT2) and Specific Protein-substrates
14:32

Deacetylation Assays to Unravel the Interplay between Sirtuins (SIRT2) and Specific Protein-substrates

Published on: February 27, 2016

SIRT5/7 desuccinylation in cancer: linking metabolism, immunity, and drug resistance

Ping Luo1, Xinghua Long2

  • 1Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, China.

Biochemical Pharmacology
|July 15, 2026
PubMed

Insights

Sirtuin proteins SIRT5 and SIRT7 regulate cancer progression by desuccinylating key metabolic and epigenetic targets. Understanding their dual roles is crucial for developing targeted cancer therapies.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cancer Biology

Background:

  • Sirtuins (SIRTs) are NAD⁺-dependent enzymes involved in cellular metabolism and epigenetics.
  • SIRT5 and SIRT7, specific sirtuin family members, play critical roles in cancer progression.
  • These proteins function as lysine desuccinylases, modifying key cellular targets.

Purpose of the Study:

  • To review the emerging roles of SIRT5 and SIRT7-mediated desuccinylation in cancer.
  • To highlight their involvement in cancer metabolism, immune evasion, and therapeutic resistance.
  • To explore their potential as targets for novel cancer therapies.

Main Methods:

  • Literature review synthesizing current research on SIRT5 and SIRT7 in cancer.
  • Analysis of the desuccinylation activities of SIRT5 and SIRT7 in different cellular compartments.
  • Integration of metabolic and epigenetic roles of SIRT5/7 in tumor adaptation.

Main Results:

  • Mitochondrial SIRT5 desuccinylates metabolic enzymes, maintaining redox balance and energy production.
  • Nuclear SIRT7 desuccinylates histones and non-histone proteins, regulating chromatin and DNA repair.
  • The combined actions of SIRT5 and SIRT7 establish a metabolic-epigenetic axis promoting tumor survival and resistance.

Conclusions:

  • SIRT5 and SIRT7 exhibit distinct yet coordinated functions in cancer progression.
  • Their roles in metabolic adaptation, immune evasion, and drug resistance make them promising therapeutic targets.
  • Biomarker-guided strategies targeting the SIRT5/7-mediated desuccinylation pathway could lead to effective metabolic-immunotherapy interventions.
Keywords:
Cancer metabolismDesuccinylationDrug resistanceImmune evasionMetabolic reprogrammingSIRT5SIRT7Therapeutic targeting

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