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DNA unwinding helicase enzymes are a type of motor protein. Motor proteins can translocate along filaments or polymers using energy generated from ATP hydrolysis. Helicases are involved in all the important cellular processes where DNA unwinding is required, such as DNA replication, repair, recombination, and transcription. They are present in all living organisms, but vary in their structure, function, and mechanism of action. For example, in prokaryotes, DnaB helicase binds and translocates...
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Related Experiment Video

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Detecting Somatic Genetic Alterations in Tumor Specimens by Exon Capture and Massively Parallel Sequencing
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RecQ Helicase Somatic Alterations in Cancer.

Megha K Thakkar1, Jamie Lee1, Stefan Meyer2,3

  • 1Department of Pediatrics, Division of Pediatric Hematology-Oncology, University of California, Los Angeles, Los Angeles, CA, United States.

Frontiers in Molecular Biosciences
|July 5, 2022
PubMed
Summary

RecQ helicases maintain genomic stability but are implicated in cancer development and chemotherapy resistance. Targeting these DNA repair enzymes offers potential new therapeutic strategies for cancer treatment.

Keywords:
BLMRECQ1RecQ helicasesRecql4Recql5WRNcancer

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Area of Science:

  • Genomics
  • Molecular Biology
  • Cancer Research

Background:

  • RecQ helicases are crucial for maintaining genomic stability and DNA repair.
  • Five human RecQ helicases (RECQL1, BLM, WRN, RECQL4, RECQL5) are highly conserved.
  • Mutations in BLM, WRN, and RECQL4 are linked to cancer predisposition syndromes.

Purpose of the Study:

  • To review the role of RecQ DNA helicases in cancer.
  • To discuss therapeutic opportunities targeting RecQ helicases in cancer treatment.

Main Methods:

  • Comprehensive literature review of RecQ helicase function in cancer.
  • Analysis of emerging research on somatic alterations and therapeutic targeting.

Main Results:

  • Somatic alterations in RecQ helicases are found in various cancers.
  • Overexpression can increase chemotherapy resistance; downregulation may enhance sensitivity.
  • RecQ helicases are implicated in hematological malignancies, breast cancer, and osteosarcoma.

Conclusions:

  • RecQ helicases play a dual role in cancer, influencing development and treatment response.
  • Targeting RecQ helicases presents a promising avenue for novel cancer therapies.