Macrophages are key innate immune cells involved in a broad spectrum of physiological and pathological processes. Macrophage depletion with clodronate-liposomes is commonly used to investigate functions of macrophages in mice. Here, we describe a protocol that combines the depletion of resident macrophages with the reconstitution of the mice with differentiated, lentivirus-transduced bone marrow-derived macrophages (BMDMs) in the context of an experimental sepsis model. This experimental strategy is easily adapted to other experimental designs. For complete details on the use and execution of this protocol, please refer to Du et al. (2020).
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http://dx.doi.org/10.1016/j.xpro.2021.101004 | DOI Listing |
Adv Sci (Weinh)
January 2025
Tianjin Key Laboratory of Biomedical Materials and Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China.
The development of efficient therapeutic strategies to promote ferroptotic cell death offers significant potential for hepatocellular carcinoma (HCC) treatment. Herein, this study presents an HCC-targeted nanoplatform that integrates bimetallic FeMoO nanoparticles with CO-releasing molecules, and further camouflaged with SP94 peptide-modified macrophage membrane for enhanced ferroptosis-driven multi-modal therapy of HCC. Leveraging the multi-enzyme activities of the multivalent metallic elements, the nanoplatform not only decomposes HO to generate oxygen and alleviate tumor hypoxia but also depletes glutathione to inactivate glutathione peroxides 4, which amplify sonodynamic therapy and ferroptotic tumor death under ultrasound (US) irradiation.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, Beijing, China.
Background: Microglia play a critical role in the pathogenesis and development of Alzheimer's disease (AD). Selective small-molecule colony-stimulating factor 1 receptors (CSF1R) inhibitor, designed to deplete microglia, could be used to meliorate AD. This study aimed to investigate the effects and mechanisms of chimeric antigen receptor T (CAR-T) cells targeting CSF1R in 6-month-old APP/PS1 male mice.
View Article and Find Full Text PDFMol Pharm
January 2025
Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
Developing low-toxicity, high-efficacy, and fast-acting strategies to manage acute liver injury (ALI) is critical due to its rapid progression and potential for severe outcomes. Curcumin (CUR) has shown promise in ALI therapy due to its ability to modulate the inflammatory microenvironment by scavenging reactive oxygen species (ROS). Nevertheless, CUR is highly hydrophobic limiting its bioavailability and effective in vivo transport, which hinders its further application.
View Article and Find Full Text PDFJCI Insight
January 2025
Center for Cancer Immunology and Cutaneous Biology Research Center, Department of Dermatology and Krantz Family Center for Cancer Research, Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.
CD4+ T cells contribute to antitumor immunity and are implicated in the efficacy of cancer immunotherapies. In particular, CD4+ T helper 2 (Th2) cells were recently found to block spontaneous breast carcinogenesis. However, the antitumor potential of Th2 cells in targeting established breast cancer remains uncertain.
View Article and Find Full Text PDFNeurogastroenterol Motil
January 2025
Center for Intestinal Neuro-Immune Interactions, Translational Research Center for GI Disorders (TARGID), Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium.
Introduction: Postoperative ileus (POI) is an iatrogenic disorder marked by temporary impaired gastrointestinal (GI) motility post-abdominal surgery. Surgical handling of the intestine activates resident macrophages (Mfs), leading to inflammatory cytokine release and leukocyte recruitment into the muscularis, which compromises intestinal contractility. The mechanisms behind this activation are unclear.
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