Cited by 88Influenza Virus Research StudiesImmunotherapy and Immune ResponsesImmune Response and Inflammation

A Formulated TLR7/8 Agonist is a Flexible, Highly Potent and Effective Adjuvant for Pandemic Influenza Vaccines

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Van Hoeven, Neal, Fox, Christopher B., Granger, Brian, Evers, Tara, Joshi, Sharvari W., Nana, Ghislain I., Evans, Sarah C., Lin, Susan +13 more·2017·Scientific Reports

Abstract

Since 1997, highly pathogenic avian influenza viruses of the H5N1 subtype have been transmitted from avian hosts to humans. The severity of H5N1 infection in humans, as well as the sporadic nature of H5N1 outbreaks, both geographically and temporally, make generation of an effective vaccine a global public health priority. An effective H5N1 vaccine must ultimately provide protection against viruses from diverse clades. Toll-like receptor (TLR) agonist adjuvant formulations have a demonstrated ability to broaden H5N1 vaccine responses in pre-clinical models. However, many of these agonist molecules have proven difficult to develop clinically. Here, we describe comprehensive adjuvant formulation development of the imidazoquinoline TLR-7/8 agonist 3M-052, in combination with H5N1 hemagglutinin (HA) based antigens. We find that 3M-052 in multiple formulations protects both mice and ferrets from lethal H5N1 homologous virus challenge. Furthermore, we conclusively demonstrate the ability of 3M-052 adjuvant formulations to broaden responses to H5N1 HA based antigens, and show that this broadening is functional using a heterologous lethal virus challenge in ferrets. Given the extensive clinical use of imidazoquinoline TLR agonists for other indications, these studies identify multiple adjuvant formulations which may be rapidly advanced into clinical trials in an H5N1 vaccine.

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Crossref · 10.1038/srep46426

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  • Immune responses in humans may play out over a longer timescale than in mice.

    “This suggests that immune responses in humans may play out over a longer timescale (47).”

    From The liver as a central "hub" of the immune system: pathophysiological implications (2025) · cites this paper as [47]

    The Results and Murine Challenge Studies describe immune responses and challenge timing in mice, while the Discussion also describes responses in ferrets; no page numbers are available in our copy. Searches for human responses, longer timescales, and response kinetics found no passage comparing the timing of immune responses in humans and mice. (LLM, conf=0.75)

    Experimental — accuracy not yet measured
  • Alcohol intake alters the secretion of adipokines including leptin and adiponectin by adipose tissue, activating both KCs and HSCs, resulting in accelerated liver inflammation and fibrosis, respectively.

    “Alcohol intake alters the secretion of adipokines including leptin and adiponectin by adipose tissue, activating both KCs and HSCs, resulting in accelerated liver inflammation and fibrosis, respectively (47, 48).”

    From The liver as a central "hub" of the immune system: pathophysiological implications (2025) · cites this paper as [47]

    The Results passages describe TLR7/8-adjuvanted influenza vaccination and outcomes in mice, not alcohol-related liver disease. Searches for leptin, adiponectin, adipose tissue, Kupffer cells, hepatic stellate cells, inflammation, and fibrosis found no passage addressing the claimed mechanism in our copy. (LLM, conf=0.78)

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Authors
Van Hoeven, N., Fox, C. B., Granger, B., Evers, T., Joshi, S. W., Nana, G. I., Evans, S. C., Lin, S., Liang, H., Liang, L., Nakajima, R., Felgner, P. L., Bowen, R. A., Marlenee, N., Hartwig, A., Baldwin, S. L., Coler, R. N., Tomai, M., Elvecrog, J., Reed, S. G., & Carter, D.
Affiliations
  • Infectious Disease Research Institute (US)
  • University of California, Irvine (US)
  • Colorado State University (US)
  • 3M (United States) (US)
Venue
Scientific Reports
Published
2017-04-21
Volume
7
Issue
1
Pages
46426-46426
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2607106726
Cited by
87
References
63
Citations by year
2026: 3 · 2025: 9 · 2024: 5 · 2023: 9 · 2022: 6 · 2021: 12 · 2020: 10 · 2019: 13 · 2018: 17 · 2017: 3
FWCI
9.21
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
Funders
Biomedical Advanced Research and Development Authority (#HHSO100201000039C)
Topics
  • Health Sciences › Medicine › Epidemiology › Influenza Virus Research Studies
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
TLR7/8 agonist, imidazoquinolines, vaccine adjuvants, H5N1 influenza vaccine, pandemic influenza, hemagglutinin antigen, heterologous challenge, mouse challenge, avian influenza
MeSH terms
Adjuvants, Immunologic, Humans, Influenza, Human, Influenza Vaccines, Toll-Like Receptor 7, Toll-Like Receptor 8, Influenza A Virus, H5N1 Subtype

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