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Functional roles of Speckle-Type Poz (SPOP) Protein in Genomic stability

Xi Wei1, Joshua Fried2,3, Ying Li4

  • 1Department of Diagnostic and Therapeutic Ultrasonography, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.

Journal of Cancer
|October 2, 2018
PubMed

Insights

Speckle-Type Poz Protein (SPOP), a key regulator of genomic stability, is frequently altered in cancers. SPOP mutations promote error-prone DNA repair, impacting cancer progression and therapeutic responses.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Background:

  • Genomic stability is crucial for preventing tumor initiation and progression.
  • Speckle-Type Poz Protein (SPOP), an E3 ubiquitin ligase adaptor, is frequently mutated or altered in various cancers.
  • SPOP regulates oncoprotein degradation and is implicated in DNA damage response.

Purpose of the Study:

  • To review recent findings on SPOP's role in maintaining genomic stability within pathological settings.
  • To highlight SPOP's involvement in DNA repair pathways and cancer suppression.

Main Methods:

  • Literature review of recent studies on SPOP function.
  • Analysis of SPOP's role in DNA damage response and repair pathways.
  • Examination of SPOP mutations in cancer and their functional consequences.

Main Results:

  • SPOP mutations are linked to altered DNA damage repair, specifically promoting the error-prone Non-homologous end joining (NHEJ) pathway.
  • SPOP plays a significant role in cellular signaling pathways and exhibits tumor-suppressive functions.
  • Altered SPOP expression or mutations are observed in prostate, renal, and endometrial cancers.

Conclusions:

  • SPOP is a critical factor in maintaining genomic stability and its dysregulation contributes to cancer development.
  • Understanding SPOP's function in DNA repair offers insights into cancer pathogenesis and potential therapeutic strategies.
Keywords:
DNA damage responseSPOPcancergenomic stability

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