Early Immune Remodeling Steers Clinical Response to First-Line Chemoimmunotherapy in Advanced Gastric Cancer

©2024 The Authors; Published by the American Association for Cancer Research..

Adding anti-programmed cell death protein 1 (anti-PD-1) to 5-fluorouracil (5-FU)/platinum improves survival in some advanced gastroesophageal adenocarcinomas (GEA). To understand the effects of chemotherapy and immunotherapy, we conducted a phase II first-line trial (n = 47) sequentially adding pembrolizumab to 5-FU/platinum in advanced GEA. Using serial biopsy of the primary tumor at baseline, after one cycle of 5-FU/platinum, and after the addition of pembrolizumab, we transcriptionally profiled 358,067 single cells to identify evolving multicellular tumor microenvironment (TME) networks. Chemotherapy induced early on-treatment multicellular hubs with tumor-reactive T-cell and M1-like macrophage interactions in slow progressors. Faster progression featured increased MUC5A and MSLN containing treatment resistance programs in tumor cells and M2-like macrophages with immunosuppressive stromal interactions. After pembrolizumab, we observed increased CD8 T-cell infiltration and development of an immunity hub involving tumor-reactive CXCL13 T-cell program and epithelial interferon-stimulated gene programs. Strategies to drive increases in antitumor immune hub formation could expand the portion of patients benefiting from anti-PD-1 approaches.

SIGNIFICANCE: The benefit of 5-FU/platinum with anti-PD-1 in first-line advanced gastric cancer is limited to patient subgroups. Using a trial with sequential anti-PD-1, we show coordinated induction of multicellular TME hubs informs the ability of anti-PD-1 to potentiate T cell-driven responses. Differential TME hub development highlights features that underlie clinical outcomes. This article is featured in Selected Articles from This Issue, p. 695.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:14

Enthalten in:

Cancer discovery - 14(2024), 5 vom: 01. Mai, Seite 766-785

Sprache:

Englisch

Beteiligte Personen:

An, Minae [VerfasserIn]
Mehta, Arnav [VerfasserIn]
Min, Byung Hoon [VerfasserIn]
Heo, You Jeong [VerfasserIn]
Wright, Samuel J [VerfasserIn]
Parikh, Milan [VerfasserIn]
Bi, Lynn [VerfasserIn]
Lee, Hyuk [VerfasserIn]
Kim, Tae Jun [VerfasserIn]
Lee, Song-Yi [VerfasserIn]
Moon, Jeonghyeon [VerfasserIn]
Park, Ryan J [VerfasserIn]
Strickland, Matthew R [VerfasserIn]
Park, Woong-Yang [VerfasserIn]
Kang, Won Ki [VerfasserIn]
Kim, Kyoung-Mee [VerfasserIn]
Kim, Seung Tae [VerfasserIn]
Klempner, Samuel J [VerfasserIn]
Lee, Jeeyun [VerfasserIn]

Links:

Volltext

Themen:

Antibodies, Monoclonal, Humanized
Clinical Trial, Phase II
DPT0O3T46P
Fluorouracil
Journal Article
Pembrolizumab
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
U3P01618RT

Anmerkungen:

Date Completed 01.05.2024

Date Revised 03.05.2024

published: Print

Citation Status MEDLINE

doi:

10.1158/2159-8290.CD-23-0857

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM368085732