Evidence map›Paper›PMID 40993215›Full record

ArticleCellular & molecular immunology2025

Macrophages regulate PD-1 and CTLA-4 expression on ILC2s and their responsiveness in the tumor microenvironment.

Cecilia Ciancaglini, Silvia Santopolo, Stefania Martini, Francesca Scordamaglia, Giuseppe Pietropaolo, Mattia Laffranchi, Giuseppe Sciumè, Guido Ferlazzo, Paola Vacca, Lorenzo Moretta and 1 more

Abstract read
In one paragraph

Article in Cellular & molecular immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Review
  6. ILC2s and their immune checkpoints in the antitumor response.Journal for immunotherapy of cancer · 2026
    Review
  7. Review
  8. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors.

Cecilia CiancagliniTumor Immunology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
Silvia SantopoloInnate Lymphoid Cells Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
Stefania MartiniExperimental Pathology and Immunology, IRCCS Ospedale Policlinico San Martino, Genoa, Italy.
Francesca ScordamagliaPulmonology Unit, Ospedale Villa Scassi, ASL3 Genovese, Genoa, Italy.
Giuseppe PietropaoloSapienza University of Rome, Rome, Italy.ORCID 0000-0002-4802-7312
Mattia LaffranchiSapienza University of Rome, Rome, Italy.ORCID 0000-0002-0556-6068
Giuseppe SciumèSapienza University of Rome, Rome, Italy.ORCID 0000-0003-0131-512X
Guido FerlazzoExperimental Pathology and Immunology, IRCCS Ospedale Policlinico San Martino, Genoa, Italy.
Paola VaccaInnate Lymphoid Cells Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.ORCID 0000-0002-0757-0108
Lorenzo MorettaTumor Immunology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.ORCID 0000-0003-4658-1747
Linda QuatriniInnate Lymphoid Cells Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy. linda.quatrini@opbg.net.ORCID 0000-0002-6994-2595

Funding

Associazione Italiana per la Ricerca sul Cancro (Italian Association for Cancer Research) 21147Associazione Italiana per la Ricerca sul Cancro (Italian Association for Cancer Research) 27022Associazione Italiana per la Ricerca sul Cancro (Italian Association for Cancer Research) 27065Associazione Italiana per la Ricerca sul Cancro (Italian Association for Cancer Research) 30453Fondazione Umberto Veronesi (Umberto Veronesi Foundation) NA
6 · The paper itself

Abstract

Chronic inflammation can induce lymphocyte dysfunction, which is characterized by the expression of inhibitory immune checkpoints. For type 2 innate lymphoid cells (ILC2s), the acquisition of a state of hyporesponsiveness associated with PD-1 expression has been reported in severe allergic inflammation. However, the regulation of ILC2 reactivity in the context of cancer is less clear. The contribution of ILC2s to the antitumor immune response depends, indeed, on the type of tumor and the distinct cellular interplay within the microenvironment. Here, we show that ILC2s in malignant pleural effusions express the immune checkpoints PD-1 and CTLA-4. An in vitro model of the ILC2‒macrophage interaction demonstrated that this crosstalk is responsible for driving CTLA-4 expression and limiting ILC2 activation. Thus, by preventing ILC2 exhaustion, macrophages maintain ILC2 responsiveness to signals from the tissue. These results reveal that, unlike PD-1 expression, CTLA-4 expression on ILC2s is associated with the maintenance of a reactive state during chronic inflammation in the tumor microenvironment.

Indexed as

CTLA-4 AntigenImmunity, InnateLymphocytesMacrophagesProgrammed Cell Death 1 ReceptorTumor MicroenvironmentAnimalsHumansInflammationMiceMice, Inbred C57BLCTLA-4 AntigenCTLA4 protein, humanPDCD1 protein, humanProgrammed Cell Death 1 ReceptorILC2Immune checkpointTumor microenvironment

Identifiers

PMID40993215
PMCPMC12575681

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.