Mycobacterium tuberculosis Rv3628 isan effective adjuvant via activationof dendritic cells for cancer immunotherapy

© 2021 The Authors..

Tumor antigens (Ags) are weakly immunogenic and elicit inadequate immune responses, thus induction of antigen-specific immune activation via the maturation of dendritic cells (DCs) is a strategy used for cancer immunotherapy. In this study, we examined the effect of Rv3628 from Mycobacterium tuberculosis (Mtb) on activation of DCs and anti-tumor immunity in vivo. Intravenous injection of mice with Rv3628 promoted DC activation of spleen and lymph nodes. More importantly, Rv3628 also induced activation of DCs and enhanced Ag presentation in tumor-bearing mice. In mice bearing ovalbumin (OVA)-expressing tumors, combination treatment with Rv3628 and OVA peptide promoted OVA-specific T cell activation and accumulation of interferon (IFN)-γ and tumor necrosis factor (TNF)-α-producing OT-I and OT-II cells in tumor-draining lymph nodes. Moreover, three different tumor Ags in three different tumor models showed enhanced anti-tumor activity with Rv3628 as adjuvant, including inhibition of growth of OVA-expressing B16 melanoma, CT26 carcinoma, and B16 melanoma tumors, and a synergistic effect with anti-programmed cell death protein 1 (PD-1) antibody treatment. Additionally, potential application against human tumors was indicated by similar activation of human peripheral blood DCs by Rv3628. Taken together, these data demonstrate that Rv3628 could be an effective adjuvant in tumor immunotherapy via enhanced capacity of DC activation and Ag presentation.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:23

Enthalten in:

Molecular therapy oncolytics - 23(2021) vom: 17. Dez., Seite 288-302

Sprache:

Englisch

Beteiligte Personen:

Wu, Juan [VerfasserIn]
Yang, Heng [VerfasserIn]
Xu, Jin-Chuan [VerfasserIn]
Hu, Zhidong [VerfasserIn]
Gu, Wen-Fei [VerfasserIn]
Chen, Zhen-Yan [VerfasserIn]
Xia, Jing-Xian [VerfasserIn]
Lowrie, Douglas B [VerfasserIn]
Lu, Shui-Hua [VerfasserIn]
Fan, Xiao-Yong [VerfasserIn]

Links:

Volltext

Themen:

Adjuvant
Antigen presentation
Dendritic cells
Immunotherapy
Journal Article
Mycobacterium tuberculosis
Rv3628

Anmerkungen:

Date Revised 18.11.2021

published: Electronic-eCollection

Citation Status PubMed-not-MEDLINE

doi:

10.1016/j.omto.2021.10.003

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM33324155X