Evidence map›Paper›PMID 40525653›Full record

ArticleAdvanced healthcare materials2025

Imiquimod-Loaded Phospholipid-Free Small Unilamellar Vesicles Activate the Tumor Immune Microenvironment to Treat Liver Cancer and Liver Metastases.

Vanessa Chan, Hsin-Mei Lee, Haruka Takata, Sheng-Liang Cheng, Yu-Ting Yen, Lisa Pfeifer, Luke Rushton, Po-Han Chao, Feng Zhao, Chun Yat Ong and 4 more

Abstract read
In one paragraph

Article in Advanced healthcare materials, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Review
  2. Article
  3. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors.

Vanessa ChanFaculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
Hsin-Mei LeeInstitute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan.
Haruka TakataDepartment of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, 1-78-1, Sho-machi, Tokushima, 770-8505, Japan.
Sheng-Liang ChengInstitute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan.
Yu-Ting YenInstitute of Translational Medicine and New Drug Development, School of Medicine, China Medical University, Taichung, Taiwan.
Lisa PfeiferFaculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
Luke RushtonFaculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
Po-Han ChaoFaculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
Feng ZhaoFaculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
Chun Yat OngFaculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
Nojoud Al-FayezFaculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
Tatsuhiro IshidaDepartment of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, 1-78-1, Sho-machi, Tokushima, 770-8505, Japan.
Yunching ChenInstitute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan.
Shyh-Dar LiFaculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.ORCID https://orcid.org/0000-0002-1763-2667

Funding

Canadian Cancer Society 706231CIHR PJT-168861Mitacs IT39521Mitacs IT39623Nanomedicine Innovation Network 2020-T1-02Natural Science and Engineering Research Council in Canada RGPIN-2023-04020
6 · The paper itself

Abstract

Liver cancers are often diagnosed at advanced stages and are the fourth leading cause of cancer death globally. Liver metastases, particularly from colorectal cancer, occur in 66% of patients. Immunotherapies for these cancers are limited by immunosuppressive tumor microenvironments. To address this, phospholipid-free small unilamellar vesicles (PFSUV) are developed to deliver the toll-like receptor 7 agonist Imiquimod (IMQ) to hepatocytes. PFSUV consists of 83 mol% cholesterol and 17 mol% Tween80, with IMQ encapsulated in these 75-nm particles. Intravenous administration of PFSUV-IMQ sustained liver IFN-α levels over 24 h while reducing systemic exposure. In a CT26 liver metastasis model, PFSUV-IMQ combined with Oxaliplatin reduced tumor size, increased CD8+ T cell infiltration, and enhanced tumor apoptosis. In an HCA-1 liver cancer model, the same treatment decreased tumor burden, increased apoptosis, and reduced lung metastases. Flow cytometry revealed increased CD86+/MHC-II+ dendritic cells and IFN-γ+ CD8+ T cells in treated tumors. RNA-seq shows enrichment of innate immune activation genes after a single dose. These findings suggest that targeted IMQ delivery activates the tumor immune microenvironment, leading to reduced tumor burden in liver cancer and metastasis models.

Indexed as

ImiquimodLiver NeoplasmsTumor MicroenvironmentUnilamellar LiposomesAnimalsApoptosisCD8-Positive T-LymphocytesCell Line, TumorFemaleHumansMiceImiquimodUnilamellar Liposomesdrug deliveryimiquimodimmunotherapyliver cancerliver metastasesnanoparticles

Identifiers

PMID40525653
PMCPMC12391647

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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.