Pharmacological Polarization of Tumor‐Associated Macrophages Toward a CXCL9 Antitumor Phenotype

Abstract Tumor‐associated macrophages (TAM) are a diverse population of myeloid cells that are often abundant and immunosuppressive in human cancers. CXCL9Hi TAM has recently been described to have an antitumor phenotype and is linked to immune checkpoint response. Despite the emerging understanding...

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Main Authors: Noah Enbergs, Elias A. Halabi, Anne‐Gaëlle Goubet, Kelton Schleyer, Ina R. Fredrich, Rainer H. Kohler, Christopher S. Garris, Mikaël J. Pittet, Ralph Weissleder
Format: Article
Language:English
Published: Wiley 2024-04-01
Series:Advanced Science
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Online Access:https://doi.org/10.1002/advs.202309026
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author Noah Enbergs
Elias A. Halabi
Anne‐Gaëlle Goubet
Kelton Schleyer
Ina R. Fredrich
Rainer H. Kohler
Christopher S. Garris
Mikaël J. Pittet
Ralph Weissleder
author_facet Noah Enbergs
Elias A. Halabi
Anne‐Gaëlle Goubet
Kelton Schleyer
Ina R. Fredrich
Rainer H. Kohler
Christopher S. Garris
Mikaël J. Pittet
Ralph Weissleder
author_sort Noah Enbergs
collection DOAJ
description Abstract Tumor‐associated macrophages (TAM) are a diverse population of myeloid cells that are often abundant and immunosuppressive in human cancers. CXCL9Hi TAM has recently been described to have an antitumor phenotype and is linked to immune checkpoint response. Despite the emerging understanding of the unique antitumor TAM phenotype, there is a lack of TAM‐specific therapeutics to exploit this new biological understanding. Here, the discovery and characterization of multiple small‐molecule enhancers of chemokine ligand 9 (CXCL9) and their targeted delivery in a TAM‐avid systemic nanoformulation is reported. With this strategy, it is efficient encapsulation and release of multiple drug loads that can efficiently induce CXCL9 expression in macrophages, both in vitro and in vivo in a mouse tumor model. These observations provide a window into the molecular features that define TAM‐specific states, an insight a novel therapeutic anticancer approach is used to discover.
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spelling doaj.art-9ae6b327a4c14e03ba83a5d83d68b25c2024-04-17T12:48:22ZengWileyAdvanced Science2198-38442024-04-011115n/an/a10.1002/advs.202309026Pharmacological Polarization of Tumor‐Associated Macrophages Toward a CXCL9 Antitumor PhenotypeNoah Enbergs0Elias A. Halabi1Anne‐Gaëlle Goubet2Kelton Schleyer3Ina R. Fredrich4Rainer H. Kohler5Christopher S. Garris6Mikaël J. Pittet7Ralph Weissleder8Center for Systems Biology Massachusetts General Hospital 185 Cambridge St, CPZN 5206 Boston MA 02114 USACenter for Systems Biology Massachusetts General Hospital 185 Cambridge St, CPZN 5206 Boston MA 02114 USADepartment of Pathology and Immunology University of Geneva Geneva 1211 SwitzerlandCenter for Systems Biology Massachusetts General Hospital 185 Cambridge St, CPZN 5206 Boston MA 02114 USACenter for Systems Biology Massachusetts General Hospital 185 Cambridge St, CPZN 5206 Boston MA 02114 USACenter for Systems Biology Massachusetts General Hospital 185 Cambridge St, CPZN 5206 Boston MA 02114 USACenter for Systems Biology Massachusetts General Hospital 185 Cambridge St, CPZN 5206 Boston MA 02114 USADepartment of Pathology and Immunology University of Geneva Geneva 1211 SwitzerlandCenter for Systems Biology Massachusetts General Hospital 185 Cambridge St, CPZN 5206 Boston MA 02114 USAAbstract Tumor‐associated macrophages (TAM) are a diverse population of myeloid cells that are often abundant and immunosuppressive in human cancers. CXCL9Hi TAM has recently been described to have an antitumor phenotype and is linked to immune checkpoint response. Despite the emerging understanding of the unique antitumor TAM phenotype, there is a lack of TAM‐specific therapeutics to exploit this new biological understanding. Here, the discovery and characterization of multiple small‐molecule enhancers of chemokine ligand 9 (CXCL9) and their targeted delivery in a TAM‐avid systemic nanoformulation is reported. With this strategy, it is efficient encapsulation and release of multiple drug loads that can efficiently induce CXCL9 expression in macrophages, both in vitro and in vivo in a mouse tumor model. These observations provide a window into the molecular features that define TAM‐specific states, an insight a novel therapeutic anticancer approach is used to discover.https://doi.org/10.1002/advs.202309026CXCL9IFNgmacrophagenanoparticlesPARP7polarization
spellingShingle Noah Enbergs
Elias A. Halabi
Anne‐Gaëlle Goubet
Kelton Schleyer
Ina R. Fredrich
Rainer H. Kohler
Christopher S. Garris
Mikaël J. Pittet
Ralph Weissleder
Pharmacological Polarization of Tumor‐Associated Macrophages Toward a CXCL9 Antitumor Phenotype
Advanced Science
CXCL9
IFNg
macrophage
nanoparticles
PARP7
polarization
title Pharmacological Polarization of Tumor‐Associated Macrophages Toward a CXCL9 Antitumor Phenotype
title_full Pharmacological Polarization of Tumor‐Associated Macrophages Toward a CXCL9 Antitumor Phenotype
title_fullStr Pharmacological Polarization of Tumor‐Associated Macrophages Toward a CXCL9 Antitumor Phenotype
title_full_unstemmed Pharmacological Polarization of Tumor‐Associated Macrophages Toward a CXCL9 Antitumor Phenotype
title_short Pharmacological Polarization of Tumor‐Associated Macrophages Toward a CXCL9 Antitumor Phenotype
title_sort pharmacological polarization of tumor associated macrophages toward a cxcl9 antitumor phenotype
topic CXCL9
IFNg
macrophage
nanoparticles
PARP7
polarization
url https://doi.org/10.1002/advs.202309026
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