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Neutrophil: A mobile fertilizer.

Lai Guan Ng1

  • 1Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore Ng_Lai_Guan@immunol.a-star.edu.sg.

The Journal of Experimental Medicine
|December 21, 2018
PubMed
Summary

Early neutrophil influx into the omentum is crucial for ovarian cancer metastasis. This study reveals how neutrophils establish a premetastatic niche, aiding cancer cell implantation and spread.

Area of Science:

  • Oncology
  • Immunology
  • Cell Biology

Background:

  • Ovarian cancer frequently metastasizes to the omentum, forming a significant clinical challenge.
  • The mechanisms underlying the establishment of the omental metastatic niche are not fully understood.
  • The role of early immune cell infiltration in facilitating cancer cell implantation requires further investigation.

Purpose of the Study:

  • To investigate the role of early neutrophil infiltration in the omentum during ovarian cancer metastasis.
  • To elucidate the contribution of neutrophils to the formation of a premetastatic niche.
  • To understand how neutrophils promote the subsequent implantation of ovarian cancer cells in the omentum.

Main Methods:

  • Utilized mouse models of ovarian cancer.

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  • Analyzed immune cell populations in the omentum using flow cytometry and immunohistochemistry.
  • Investigated the interaction between neutrophils and ovarian cancer cells in vivo and in vitro.

    • Main Results:

    • Demonstrated a significant early influx of neutrophils into the omentum following ovarian cancer cell inoculation.
    • Showed that these neutrophils actively contribute to the remodeling of the omental microenvironment.
    • Provided evidence that neutrophils enhance the survival and adhesion of ovarian cancer cells within the omentum.

    Conclusions:

    • Early neutrophil accumulation in the omentum is a critical factor in establishing the premetastatic niche for ovarian cancer.
    • Neutrophils play a pro-metastatic role by preparing the omental site for ovarian cancer cell colonization.
    • Targeting early neutrophil responses may represent a novel therapeutic strategy to prevent ovarian cancer omental metastasis.