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  9. Predictive And Prognostic Markers
  11. Particulate Matter Facilitates Amphiregulin-dependent Lung Cancer Proliferation Through Glutamine Metabolism.
  1. Home
  3. Research Domains
  5. Biomedical And Clinical Sciences
  7. Oncology And Carcinogenesis
  9. Predictive And Prognostic Markers
  11. Particulate Matter Facilitates Amphiregulin-dependent Lung Cancer Proliferation Through Glutamine Metabolism.

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Particulate matter facilitates amphiregulin-dependent lung cancer proliferation through glutamine metabolism.

Ya-Jing Jiang1, Trung-Loc Ho1, Chia-Chia Chao2

  • 1Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.

International Journal of Biological Sciences
|June 21, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Long-term exposure to particulate matter (PM) accelerates lung cancer growth by increasing amphiregulin (AREG) production and altering glutamine metabolism, revealing key molecular mechanisms.

Keywords:
AmphiregulinGlutamine metabolismLung cancerParticulate matter

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Area of Science:

  • Environmental Health
  • Molecular Biology
  • Cancer Research

Background:

  • Long-term exposure to particulate matter (PM) is linked to lung cancer, but the underlying molecular mechanisms driving cancer progression are not fully understood.
  • Existing research highlights associations between PM and lung cancer, necessitating deeper investigation into cellular and molecular responses.

Purpose of the Study:

  • To elucidate the molecular mechanisms by which particulate matter (PM) exposure enhances lung cancer cell proliferation.
  • To establish and characterize a lung cancer cell line model mimicking long-term PM exposure.

Main Methods:

  • Established a PM-exposed lung cancer cell line (A549.PM) from parental cells (A549.Par) through prolonged PM exposure.
  • Utilized RNA sequencing to identify key molecular players in PM-induced proliferation.
SLC1A5
  • Investigated the role of glutamine metabolism and the EGFR/PI3K/AKT/mTOR pathway in PM-exposed cells.

    • Main Results:

    • PM-exposed A549.PM cells demonstrated significantly higher cell growth and proliferation in vitro and in vivo compared to A549.Par cells.
    • RNA sequencing identified amphiregulin (AREG) as a critical mediator of PM-induced proliferation.
    • PM exposure was found to enhance AREG-dependent lung cancer proliferation via modulation of glutamine metabolism.
    • The EGFR/PI3K/AKT/mTOR pathway was implicated in regulating solute carrier family A1 member 5 (SLC1A5) expression and glutamine metabolism.

    Conclusions:

    • Particulate matter (PM) exposure promotes lung cancer cell proliferation through the amphiregulin (AREG) pathway and altered glutamine metabolism.
    • The EGFR/PI3K/AKT/mTOR signaling pathway plays a crucial role in mediating PM's effects on glutamine metabolism and cancer progression.
    • These findings provide critical insights into the molecular basis of PM-induced lung cancer development.