Limited treatment response and inadequate monitoring methods stand firmly before successful immunotherapy. Recruiting and activating immune cells in the hypoxic tumor microenvironment is the key to reversing immune suppression and improving immunotherapy efficacy. In this study, biomimetic oxygen-delivering nanoparticles (CmPF) are engineered for homologous targeting and hypoxia alleviation within the tumor environment. CmPF targets the tumor microenvironment and delivers oxygen to reduce hypoxia, thereby promoting immune cell activity at the tumor site. In addition, granzyme B-targeted positron emission tomography (PET) imaging is employed to monitor immune cell activity changes in response to immunotherapy efficacy in vivo. The combination of CmPF with carboplatin and PD-1 inhibitors significantly suppresses tumor growth by 2.4-fold, exhibiting the potential of CmPF to enhance the efficacy of immunotherapy. Immunohistochemistry further confirms increased expression of key immune markers, highlighting the reprogramming of the tumor microenvironment. This study demonstrates that hypoxia alleviation enhances tumor immunotherapy efficacy and introduces a non-invasive PET imaging method for dynamic, real-time assessment of therapeutic response.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11887188 | PMC |
| http://dx.doi.org/10.1186/s12951-025-03257-6 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Intratumoral Injection of R848 and Poly(I:C) Synergistically Promoted Antitumour Immune Responses by Reprogramming Macrophage Polarization and Activating DCs in Lung Cancer.
Clin Exp Immunol
March 2025
School of Medicine, Guizhou University, Guiyang 550025, China.
Introduction: Immunotherapy has rapidly become a primary treatment option for many lung cancer patients because of its success in treating this prevalent and deadly disease. However, the success of immunotherapy relies on overcoming the immunosuppressive tumour microenvironment, making remodelling this environment a potential strategy for lung cancer therapy. Research suggests that Toll-like receptor (TLR) agonists can impede tumour growth by promoting the conversion of tumour-associated macrophages into an M1-like state or enhancing dendritic cell development.
View Article and Find Full Text PDFCAR-T cells in the treatment of multiple myeloma: an encouraging cell therapy.
Front Immunol
March 2025
Department of Orthopaedic Medical Center, The Second Norman Bethune Hospital of Jilin University, Changchun, Jilin, China.
Multiple myeloma (MM) is a malignant disease of plasma cells that accounts for approximately 10% of all hematological malignancies and is characterized by a clonal proliferation of malignant plasma cells in the bone marrow. Numerous therapeutic strategies, including proteasome inhibitors, immunomodulators, monoclonal antibodies against CD38 and autologous stem cell transplantation, have prolonged the median survival of MM patients. Nevertheless, almost all MM patients suffer disease relapses due to drug resistance and eventually die from MM or MM-related complications.
View Article and Find Full Text PDFUnleashing the power of peptides in prostate cancer immunotherapy: mechanism, facts and perspectives.
Front Pharmacol
February 2025
TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.
Prostate cancer, the second most common cancer in men, often progresses to castration-resistant prostate cancer despite androgen deprivation therapy. Immunotherapy, revolutionary in cancer treatment, has limited efficacy in prostate cancer due to its "cold tumor" nature. Peptides, with unique advantages, offer new hope.
View Article and Find Full Text PDFCharacterization of Exhausted T Cell Signatures in Pan-Cancer Settings.
Int J Mol Sci
March 2025
Department of Biochemistry and Molecular Biology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
T cells play diverse roles in cancer immunology, acting as tumor suppressors, cytotoxic effectors, enhancers of cytotoxic T lymphocyte responses and immune suppressors; providing memory and surveillance; modulating the tumor microenvironment (TME); or activating innate immune cells. However, cancer cells can disrupt T cell function, leading to T cell exhaustion and a weakened immune response against the tumor. The expression of exhausted T cell (Tex) markers plays a pivotal role in shaping the immune landscape of multiple cancers.
View Article and Find Full Text PDFUnusual Partners: γδ-TCR-Based T Cell Therapy in Combination with Oncolytic Virus Treatment for Diffuse Midline Gliomas.
Int J Mol Sci
February 2025
Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands.
Due to the minimal survival benefits of existing therapies for pediatric diffuse midline glioma (DMG) patients, new therapeutic modalities are being investigated. Immunotherapies such as CAR-T cells and oncolytic viruses (OVs) are part of these efforts, as evidenced by the increasing number of clinical trials. αβ T cells engineered with a high-affinity γ9δ2 T-cell receptor (TEGs) are immune cells designed to target metabolic changes in malignant or virally infected cells via BTN2A1 and BTN3A.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!