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Fang T, Cao X, Wang L, Chen M, Deng Y, Chen G. Bioresponsive and immunotherapeutic nanomaterials to remodel tumor microenvironment for enhanced immune checkpoint blockade. Bioact Mater 2024; 32:530-542. [PMID: 38026439 PMCID: PMC10660011 DOI: 10.1016/j.bioactmat.2023.10.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Immune checkpoint blockade (ICB) therapy is a revolutionary approach to treat cancers, but still have limited clinical applications. Accumulating evidence pinpoints the immunosuppressive characteristics of the tumor microenvironment (TME) as one major obstacle. The TME, characterized by acidity, hypoxia and elevated ROS levels, exerts its detrimental effects on infiltrating anti-tumor immune cells. Here, we developed a TME-responsive and immunotherapeutic catalase-loaded calcium carbonate nanoparticles (termed as CAT@CaCO3 NPs) as the simple yet versatile multi-modulator for TME remodeling. CaCO3 NPs can consume protons in the acidic TME to normalize the TME pH. CAT catalyzed the decomposition of ROS and thus generated O2. The released Ca2+ led to Ca2+ overload in the tumor cells which then triggered the release of damage-associated molecular patterns (DAMP) signals to initiate anti-tumor immune responses, including tumor antigen presentation by dendritic cells. Meanwhile, CAT@CaCO3 NPs-induced immunosupportive TME also promoted the polarization of the M2 tumor-associated macrophages to the M1 phenotype, further enhancing tumor antigen presentation. Consequently, T cell-mediated anti-tumor responses were activated, the efficacy of which was further boosted by aPD-1 immune checkpoint blockade. Our study demonstrated that local treatment of CAT@CaCO3 NPs and aPD-1 combination can effectively evoke local and systemic anti-tumor immune responses, inhibiting the growth of treated tumors and distant diseases.
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Affiliation(s)
- Tianxu Fang
- Department of Biomedical Engineering, McGill University, Montreal, QC, H3G 0B1, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, Montreal, QC, H3G 0B1, Canada
| | - Xiaona Cao
- Department of Biomedical Engineering, McGill University, Montreal, QC, H3G 0B1, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, Montreal, QC, H3G 0B1, Canada
| | - Li Wang
- Department of Biomedical Engineering, McGill University, Montreal, QC, H3G 0B1, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, Montreal, QC, H3G 0B1, Canada
| | - Mo Chen
- Department of Biomedical Engineering, McGill University, Montreal, QC, H3G 0B1, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, Montreal, QC, H3G 0B1, Canada
| | - Yueyang Deng
- Department of Biomedical Engineering, McGill University, Montreal, QC, H3G 0B1, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, Montreal, QC, H3G 0B1, Canada
| | - Guojun Chen
- Department of Biomedical Engineering, McGill University, Montreal, QC, H3G 0B1, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, Montreal, QC, H3G 0B1, Canada
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Diao Y, Bai J, Sun C, Huang J, Yang C, Hu Q. A Simplified Model for Shear Behavior of Mortar Using Biomimetic Carbonate Precipitation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5613. [PMID: 37629904 PMCID: PMC10456397 DOI: 10.3390/ma16165613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/27/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023]
Abstract
As a common molecule in biomineralization, L-aspartic acid (L-Asp) has been proven to be able to induce in vitro CaCO3 precipitation, but its application in sand reinforcement has never been studied. In this study, L-Asp was employed in sand reinforcement for the first time through the newly developed biomimetic carbonate precipitation (BCP) technique. Specimens with different number of BCP spray cycles were prepared, and a series of direct shear tests were conducted to investigate the impact of spray number on shear strength, critical displacement, and residual strength. Then a simplified power model for shear stress-displacement behavior was established and calibrated with the measured data. The results show that BCP can significantly improve the shear strength of sand. As the number of spray cycles increases, both the shear strength and residual strength increase, while the critical displacement decreases. Such variations can be described with two sigmoid models and a linear model, respectively. The simplified power model performs well in most cases, especially at higher spray numbers. This study is expected to provide a practical model for the shear behavior of BCP-treated mortar.
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Affiliation(s)
- Yu Diao
- School of Civil Engineering, Tianjin University, Tianjin 300072, China
| | - Jitao Bai
- School of Civil Engineering, Tianjin University, Tianjin 300072, China
| | - Changyou Sun
- 3rd Construction Co., Ltd. of China Construction 5th Engineering Bureau, Changsha 410021, China
| | - Jianyou Huang
- School of Civil Engineering, Tianjin University, Tianjin 300072, China
| | - Chao Yang
- China State Construction Engineering Corporation, Beijing 100029, China
| | - Qingsong Hu
- School of Civil Engineering, Tianjin University, Tianjin 300072, China
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Ramnarain V, Georges T, Ortiz Peña N, Ihiawakrim D, Longuinho M, Bulou H, Gervais C, Sanchez C, Azaïs T, Ersen O. Monitoring of CaCO 3 Nanoscale Structuration through Real-Time Liquid Phase Transmission Electron Microscopy and Hyperpolarized NMR. J Am Chem Soc 2022; 144:15236-15251. [PMID: 35971919 DOI: 10.1021/jacs.2c05731] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Calcium carbonate (CaCO3) is one of the most significant biominerals in nature. Living organisms are able to control its biomineralization by means of an organic matrix to tailor a myriad of hybrid functional materials. The soluble organic components are often proteins rich in acidic amino-acids such as l-aspartic acid. While several studies have demonstrated the influence of amino acids on the crystallization of calcium carbonate, nanoscopic insight of their impact on CaCO3 mineralization, in particular at the early stages, is still lacking. Herein, we implement liquid phase-transmission electron microscopy (LP-TEM) in order to visualize in real-time and at the nanoscale the prenucleation stages of CaCO3 formation. We observe that l-aspartic acid favors the formation of individual and aggregated prenucleation clusters which are found stable for several minutes before the transformation into amorphous nanoparticles. Combination with hyperpolarized solid state nuclear magnetic resonance (DNP NMR) and density functional theory (DFT) calculations allow shedding light on the underlying mechanism at the prenucleation stage. The promoting nature of l-aspartic acid with respect to prenucleation clusters is explained by specific interactions with both Ca2+ and carbonates and the stabilization of the Ca2+-CO32-/HCO3- ion pairs favoring the formation and stabilization of the CaCO3 transient precursors. The study of prenucleation stages of mineral formation by the combination of in situ LP-TEM, advanced analytical techniques (including hyperpolarized solid-state NMR), and numerical modeling allows the real-time monitoring of prenucleation species formation and evolution and the comprehension of their relative stability.
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Affiliation(s)
- Vinavadini Ramnarain
- Institut de Physique et Chimie des Matériaux de Strasbourg, 23 Rue du Loess, 67034 Strasbourg, Cedex 2, France.,ICFRC, 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Tristan Georges
- Laboratoire de Chimie de Matière Condensée de Paris, Sorbonne Université, 75005 Paris, France
| | - Nathaly Ortiz Peña
- Laboratoire Matériaux et Phénomènes Quantiques, 75025 Paris, Cedex 13, France
| | - Dris Ihiawakrim
- Institut de Physique et Chimie des Matériaux de Strasbourg, 23 Rue du Loess, 67034 Strasbourg, Cedex 2, France.,ICFRC, 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Mariana Longuinho
- CBPF, Rua Dr. Xavier Sigaud, 150 Urca I, CEP 22290-180, Rio de Janeiro, Brasil.,UFRJ, Av Pedro Calmon, 550 Edificio da Reitoria, Iha de do Fundao, CEP 21941-901 Rio de Janeiro, Brasil
| | - Hervé Bulou
- Institut de Physique et Chimie des Matériaux de Strasbourg, 23 Rue du Loess, 67034 Strasbourg, Cedex 2, France.,ICFRC, 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Christel Gervais
- Laboratoire de Chimie de Matière Condensée de Paris, Sorbonne Université, 75005 Paris, France
| | - Clément Sanchez
- Laboratoire de Chimie de Matière Condensée de Paris, Sorbonne Université, 75005 Paris, France.,USIAS, Université de Strasbourg, 67000 Strasbourg, France
| | - Thierry Azaïs
- Laboratoire de Chimie de Matière Condensée de Paris, Sorbonne Université, 75005 Paris, France
| | - Ovidiu Ersen
- Institut de Physique et Chimie des Matériaux de Strasbourg, 23 Rue du Loess, 67034 Strasbourg, Cedex 2, France.,ICFRC, 8 Allée Gaspard Monge, 67000 Strasbourg, France
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Ortiz Peña N, Ihiawakrim D, Creţu S, Cotin G, Kiefer C, Begin-Colin S, Sanchez C, Portehault D, Ersen O. In situ liquid transmission electron microscopy reveals self-assembly-driven nucleation in radiolytic synthesis of iron oxide nanoparticles in organic media. NANOSCALE 2022; 14:10950-10957. [PMID: 35860928 DOI: 10.1039/d2nr01511k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We have investigated the early stages of the formation of iron oxide nanoparticles from iron stearate precursors in the presence of sodium stearate in an organic solvent by in situ liquid phase transmission electron microscopy (IL-TEM). Before nucleation, we have evidenced the spontaneous formation of vesicular assemblies made of iron polycation-based precursors sandwiched between stearate layers. Nucleation of iron oxide nanoparticles occurs within the walls of the vesicles, which subsequently collapse upon the consumption of the iron precursors and the growth of the nanoparticles. We then evidenced that fine control of the electron dose, and therefore of the local concentration of reactive iron species in the vicinity of the nuclei, enables controlling crystal growth and selecting the morphology of the resulting iron oxide nanoparticles. Such a direct observation of the nucleation process templated by vesicular assemblies in a hydrophobic organic solvent sheds new light on the formation process of metal oxide nanoparticles and therefore opens ways for the synthesis of inorganic colloidal systems with tunable shape and size.
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Affiliation(s)
- Nathaly Ortiz Peña
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS Université de Strasbourg, BP 43 Strasbourg Cedex 2, France.
- Université Paris Cité, CNRS, Laboratoire Matériaux et Phénomènes Quantiques, 75013 Paris, France
| | - Dris Ihiawakrim
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS Université de Strasbourg, BP 43 Strasbourg Cedex 2, France.
| | - Sorina Creţu
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS Université de Strasbourg, BP 43 Strasbourg Cedex 2, France.
| | - Geoffrey Cotin
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS Université de Strasbourg, BP 43 Strasbourg Cedex 2, France.
| | - Céline Kiefer
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS Université de Strasbourg, BP 43 Strasbourg Cedex 2, France.
| | - Sylvie Begin-Colin
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS Université de Strasbourg, BP 43 Strasbourg Cedex 2, France.
| | - Clément Sanchez
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005, Paris, France
- University of Strasbourg Institute for Advanced Studies (USIAS), 67083 Strasbourg, France
| | - David Portehault
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005, Paris, France
| | - Ovidiu Ersen
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS Université de Strasbourg, BP 43 Strasbourg Cedex 2, France.
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