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Production and Detection of Reactive Oxygen Species ROS in Cancers
07:17

Production and Detection of Reactive Oxygen Species ROS in Cancers

Published on: November 21, 2011

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REACTIVE OXYGEN SPECIES AND COLORECTAL CANCER

Sandeep Sreevalsan1, Stephen Safe2

  • 1VMR 1197, Room 413, Texas A&M University, College Station, TX, 77843 979-845-9182 ssreevalsan@cvm.tamu.edu.

Current Colorectal Cancer Reports
|January 14, 2015
PubMed

Insights

Reactive oxygen species (ROS) are key in cancer treatment by inducing apoptosis and downregulating Sp transcription factors. This mechanism, involving microRNAs and Sp repressors, offers new avenues for combination cancer chemotherapy.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Reactive oxygen species (ROS) play a crucial role in the anticancer activity of various therapeutic agents.
  • ROS inducers not only promote apoptosis but also affect gene expression critical for cancer progression.

Purpose of the Study:

  • To elucidate the molecular mechanisms by which ROS inducers exert their anticancer effects.
  • To investigate the role of Sp transcription factors and their regulatory pathways in ROS-mediated cancer therapy.

Main Methods:

  • Analysis of ROS-dependent changes in Sp transcription factor (Sp1, Sp3, Sp4) expression.
  • Investigation of microRNA (miR-27a, miR-20a) regulation in response to ROS.
  • Assessment of Sp-repressor gene induction (ZBTB10, ZBTB4) under ROS treatment.

Main Results:

  • ROS inducers were found to decrease the expression of Sp1, Sp3, and Sp4 transcription factors.
  • ROS-dependent downregulation of miR-27a and miR-20a was observed.
  • The study identified the induction of Sp-repressors ZBTB10 and ZBTB4 as a key downstream effect.

Conclusions:

  • The ROS-mediated pathway involving microRNAs and Sp-repressor induction significantly contributes to anticancer effects.
  • This pathway represents a promising target for developing novel combination therapies for various cancers.
  • Understanding this mechanism can guide the rational design of more effective cancer chemotherapy regimens.
Keywords:
Colon cancerantioxidantsmechanism based drugsmicroRNAreactive oxygen Speciesspecificity transcription factorstargeted therapyzinc finger DNA binding proteins

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