1. Cancer Biology
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Functional heterogeneity of lymphocytic patterns in primary melanoma dissected through single-cell multiplexing

  1. Francesca Maria Bosisio  Is a corresponding author
  2. Asier Antoranz  Is a corresponding author
  3. Yannick van Herck
  4. Maddalena Maria Bolognesi
  5. Lukas Marcelis
  6. Clizia Chinello
  7. Jasper Wouters
  8. Fulvio Magni
  9. Leonidas Alexopoulos
  10. Marguerite Stas
  11. Veerle Boecxstaens
  12. Oliver Bechter
  13. Giorgio Cattoretti
  14. Joost van den Oord
  1. KU Leuven and UZ Leuven, Belgium
  2. ProtATonce Ltd, Greece
  3. Università degli studi di Milano-Bicocca, Italy
  4. KU Leuven, Belgium
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Cite this article as: eLife 2020;9:e53008 doi: 10.7554/eLife.53008

Abstract

In melanoma, the lymphocytic infiltrate is a prognostic parameter classified morphologically into 'brisk', 'non-brisk' and 'absent' entailing a functional association that has never been proved. Recently, it has been shown that lymphocytic populations can be very heterogeneous, and that anti-PD-1 immunotherapy supports activated T cells. Here, we characterize the immune landscape in primary melanoma by high-dimensional single cell multiplex analysis in tissue sections (MILAN technique) followed by image analysis, RT-PCR and shotgun proteomics. We observed that the brisk and non-brisk patterns are heterogeneous functional categories that can be further sub-classified into active, transitional or exhausted. The classification of primary melanomas based on the functional paradigm also shows correlation with spontaneous regression, and an improved prognostic value when compared to that of the brisk classification. Finally, the main inflammatory cell subpopulations that are present in the microenvironment associated with activation and exhaustion and their spatial relationships are described using neighbourhood analysis.

Article and author information

Author details

  1. Francesca Maria Bosisio

    Laboratory of Translational Cell and Tissue Research and Pathology Department, KU Leuven and UZ Leuven, Leuven, Belgium
    For correspondence
    f.bosisio1@gmail.com
    Competing interests
    No competing interests declared.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0002-8874-2003
  2. Asier Antoranz

    National Technical University of Athens, ProtATonce Ltd, Athens, Greece
    For correspondence
    asierantoranz91@gmail.com
    Competing interests
    Asier Antoranz, Asier Antoranz is affiliated with ProtATonce Ltd. The author has no other competing interests to declare.
  3. Yannick van Herck

    Laboratory of Experimental Oncology, KU Leuven and UZ Leuven, Leuven, Belgium
    Competing interests
    No competing interests declared.
  4. Maddalena Maria Bolognesi

    Department of Medicine and Surgery, Università degli studi di Milano-Bicocca, Milan, Italy
    Competing interests
    Maddalena Maria Bolognesi, Maddalena Maria Bolognesi has received funding from GlaxoSmithKline . The author has no other competing interests to declare.
  5. Lukas Marcelis

    Laboratory of Translational Cell and Tissue Research and Pathology Department, KU Leuven, Leuven, Belgium
    Competing interests
    No competing interests declared.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0002-5446-1801
  6. Clizia Chinello

    Department of Medicine and Surgery, Università degli studi di Milano-Bicocca, Milan, Italy
    Competing interests
    No competing interests declared.
  7. Jasper Wouters

    Laboratory of Translational Cell and Tissue Research and Pathology Department, KU Leuven and UZ Leuven, Leuven, Belgium
    Competing interests
    No competing interests declared.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0002-7129-2990
  8. Fulvio Magni

    Department of Medicine and Surgery, Università degli studi di Milano-Bicocca, Milan, Italy
    Competing interests
    No competing interests declared.
  9. Leonidas Alexopoulos

    National Technical University of Athens, ProtATonce Ltd, Athens, Greece
    Competing interests
    No competing interests declared.
  10. Marguerite Stas

    Department of Surgical Oncology, KU Leuven and UZ Leuven, Leuven, Belgium
    Competing interests
    No competing interests declared.
  11. Veerle Boecxstaens

    Department of Surgical Oncology, KU Leuven and UZ Leuven, Leuven, Belgium
    Competing interests
    No competing interests declared.
  12. Oliver Bechter

    Laboratory of Experimental Oncology, KU Leuven and UZ Leuven, Leuven, Belgium
    Competing interests
    No competing interests declared.
  13. Giorgio Cattoretti

    Department of Medicine and Surgery, Università degli studi di Milano-Bicocca, Milan, Italy
    Competing interests
    No competing interests declared.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0003-3799-3221
  14. Joost van den Oord

    Laboratory of Translational Cell and Tissue Research and Pathology Department, KU Leuven and UZ Leuven, Leuven, Belgium
    Competing interests
    No competing interests declared.

Funding

Horizon 2020 Framework Programme (642295)

  • Francesca Maria Bosisio

Horizon 2020 Framework Programme (675585)

  • Asier Antoranz

BEL114054 (HGS1006-C1121)

  • Maddalena Maria Bolognesi

The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.

Ethics

Human subjects: Ethical approval was obtained from the Ethical Committee/IRB OG032 of the University Hospital of Leuven. After the approval, the study was identified with the number S57266. According to the Clinical Trial regalement no informed consent was needed due to the use of post-diagnostic left-over material.

Reviewing Editor

  1. C Daniela Robles-Espinoza, International Laboratory for Human Genome Research, Mexico

Publication history

  1. Received: October 23, 2019
  2. Accepted: February 14, 2020
  3. Accepted Manuscript published: February 14, 2020 (version 1)

Copyright

© 2020, Bosisio et al.

This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.

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