Related Experiment Video

Updated: Nov 8, 2025

A High-Throughput Enzyme-Coupled Activity Assay to Probe Small Molecule Interaction with the dNTPase SAMHD1
08:17

A High-Throughput Enzyme-Coupled Activity Assay to Probe Small Molecule Interaction with the dNTPase SAMHD1

Published on: April 16, 2021

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Dual roles of SAMHD1 in tumor development and chemoresistance to anticancer drugs

Zhangming Chen1, Jie Hu1,2, Songcheng Ying2

  • 1Department of General Surgery, The Fourth Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230001, P.R. China.

Oncology Letters
|April 28, 2021
PubMed

Insights

Sterile alpha motif and HD-domain-containing protein 1 (SAMHD1) is a key enzyme in regulating DNA synthesis and has roles in cancer development and chemotherapy resistance. Understanding SAMHD1

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Oncology

Background:

  • Sterile alpha motif and HD-domain-containing protein 1 (SAMHD1) functions as a GTP or dGTP-dependent deoxynucleotide triphosphohydrolase (dNTPase).
  • SAMHD1 acts as an antiviral factor, and its genetic mutations are linked to Aicardi-Goutières Syndrome and abnormal dNTP pools.
  • The role of SAMHD1 in various cancers, including leukemia, lung, and colorectal cancer, is under extensive investigation.

Purpose of the Study:

  • To review the regulation of SAMHD1 expression in cancer.
  • To summarize SAMHD1's function in tumor growth and chemotherapy sensitivity.
  • To discuss current controversies and future research directions regarding SAMHD1 in cancer.

Main Methods:

  • Literature review of studies on SAMHD1 expression, genetic mutations, and functional roles in cancer.
  • Analysis of post-translational modifications (methylation, acetylation, phosphorylation) affecting SAMHD1.
  • Examination of SAMHD1's impact on dNTPase activity, LINE-1 suppression, DNA repair, and chemosensitivity.

Main Results:

  • SAMHD1's dNTPase activity, LINE-1 suppression, and DNA repair functions are altered by genetic mutations, potentially driving cancer development.
  • Post-translational modifications significantly regulate SAMHD1 expression and activity.
  • SAMHD1 negatively influences chemosensitivity to anticancer drugs via its dNTPase activity.

Conclusions:

  • SAMHD1 plays a complex role in cancer, influencing tumor progression and response to therapy.
  • Further research into SAMHD1 regulation and function is crucial for developing novel cancer treatments.
  • Understanding SAMHD1's dual role in antiviral defense and cancer warrants continued investigation.
Keywords:
DNA damage repaircancercell cyclechemosensitivitysterile α motif and HD-domain-containing protein 1

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