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High-throughput Quantitative Real-time RT-PCR Assay for Determining Expression Profiles of Types I and III Interferon Subtypes
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High-throughput Quantitative Real-time RT-PCR Assay for Determining Expression Profiles of Types I and III Interferon Subtypes

Published on: March 24, 2015

Molecular cross-talk between the TRAIL and interferon signaling pathways

Chandan Kumar-Sinha1, Sooryanarayana Varambally, Arun Sreekumar

  • 1Department of Pathology, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA.

The Journal of Biological Chemistry
|October 26, 2001
PubMed

Insights

Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) and interferon-beta synergistically enhance breast cancer cell death. This study reveals cross-talk between TRAIL and interferon signaling pathways, offering new therapeutic insights.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Immunology

Background:

  • TRAIL (Tumor necrosis factor-related apoptosis-inducing ligand) induces apoptosis in cancer cells, showing therapeutic potential.
  • The full scope of TRAIL-mediated signaling extends beyond simple caspase activation.
  • Understanding TRAIL's complex signaling is crucial for developing effective anti-cancer therapies.

Purpose of the Study:

  • To investigate TRAIL-mediated gene expression in breast carcinoma cells using DNA microarrays.
  • To elucidate the molecular interactions between TRAIL and interferon signaling pathways.
  • To explore the combined therapeutic potential of TRAIL and interferon-beta in breast cancer.

Main Methods:

  • DNA microarrays were employed to profile gene expression changes induced by TRAIL in breast cancer cells.
  • Analysis focused on identifying primary response genes and interferon-related signaling pathways.
  • In vitro experiments combined TRAIL and interferon-beta to assess synergistic effects on apoptosis and caspase activation.

Main Results:

  • TRAIL induced known NF-kappaB-dependent genes (e.g., cIAP2, A20, E-selectin) and a significant cohort of interferon-signaling pathway genes.
  • Evidence of molecular cross-talk was observed, including interferon-mediated upregulation of TRAIL and TRAIL-mediated induction of interferon-beta.
  • Combined treatment with TRAIL and interferon-beta synergistically enhanced apoptosis and caspase activation in breast cancer cells.

Conclusions:

  • TRAIL signaling in breast cancer cells involves intricate cross-talk with the interferon pathway.
  • The combination of TRAIL and interferon-beta demonstrates synergistic anti-tumor activity.
  • These findings highlight novel therapeutic strategies by combining TRAIL and interferon-based treatments for breast cancer.

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