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Zhang L, Hajebrahimi S, Tong S, Gao X, Cheng H, Zhang Q, Hinojosa DT, Jiang K, Hong L, Huard J, Bao G. Force-Mediated Endocytosis of Iron Oxide Nanoparticles for Magnetic Targeting of Stem Cells. ACS Appl Mater Interfaces 2023. [PMID: 37145890 DOI: 10.1021/acsami.2c20265] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Stem cell therapy represents one of the most promising approaches for tissue repair and regeneration. However, the full potential of stem cell therapy remains to be realized. One major challenge is the insufficient homing and retention of stem cells at the desired sites after in vivo delivery. Here, we provide a proof-of-principle demonstration of magnetic targeting and retention of human muscle-derived stem cells (hMDSCs) in vitro through magnetic force-mediated internalization of magnetic iron oxide nanoparticles (MIONs) and the use of a micropatterned magnet. We found that the magnetic force-mediated cellular uptake of MIONs occurs through an endocytic pathway, and the MIONs were exclusively localized in the lysosomes. The intracellular MIONs had no detrimental effect on the proliferation of hMDSCs or their multilineage differentiation, and no MIONs were translocated to other cells in a coculture system. Using hMDSCs and three other cell types including human umbilical vein endothelial cells (HUVECs), human dermal fibroblasts (HDFs), and HeLa cells, we further discovered that the magnetic force-mediated MION uptake increased with MION size and decreased with cell membrane tension. We found that the cellular uptake rate was initially increased with MION concentration in solution and approached saturation. These findings provide important insight and guidance for magnetic targeting of stem cells in therapeutic applications.
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Affiliation(s)
- Linlin Zhang
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Samira Hajebrahimi
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Sheng Tong
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Xueqin Gao
- Department of Orthopedic Surgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas 77030, United States
- Linda and Mitch Hart Center for Regenerative and Personalized Medicine, Steadman Philippon Research Institute, Vail, Colorado 81657, United States
| | - Haizi Cheng
- Department of Orthopedic Surgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas 77030, United States
| | - Qingbo Zhang
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Daniel T Hinojosa
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Kaiyi Jiang
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Lin Hong
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Johnny Huard
- Department of Orthopedic Surgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas 77030, United States
- Linda and Mitch Hart Center for Regenerative and Personalized Medicine, Steadman Philippon Research Institute, Vail, Colorado 81657, United States
| | - Gang Bao
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
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Zhang L, Zhang Q, Hinojosa DT, Jiang K, Pham QK, Xiao Z, Colvin VL, Bao G. Multifunctional Magnetic Nanoclusters Can Induce Immunogenic Cell Death and Suppress Tumor Recurrence and Metastasis. ACS Nano 2022; 16:18538-18554. [PMID: 36306738 DOI: 10.1021/acsnano.2c06776] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Metastasis is the predominant cause of cancer deaths due to solid organ malignancies; however, anticancer drugs are not effective in treating metastatic cancer. Here we report a nanotherapeutic approach that combines magnetic nanocluster-based hyperthermia and free radical generation with an immune checkpoint blockade (ICB) for effective suppression of both primary and secondary tumors. We attached 2,2'-azobis(2-midinopropane) dihydrochloride (AAPH) molecules to magnetic iron oxide nanoclusters (IONCs) to form an IONC-AAPH nanoplatform. The IONC can generate a high level of localized heat under an alternating magnetic field (AMF), which decomposes the AAPH on the cluster surface and produces a large number of carbon-centered free radicals. A combination of localized heating and free radicals can effectively kill tumor cells under both normoxic and hypoxic conditions. The tumor cell death caused by the combination of magnetic heating and free radicals led to the release or exposure of various damage-associated molecule patterns, which promoted the maturation of dendritic cells. Treating the tumor-bearing mice with IONC-AAPH under AMF not only eradicated the tumors but also generated systemic antitumor immune responses. The combination of IONC-AAPH under AMF with anti-PD-1 ICB dramatically suppressed the growth of untreated distant tumors and induced long-term immune memory. This IONC-AAPH based magneto-immunotherapy has the potential to effectively combat metastasis and control cancer recurrence.
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Affiliation(s)
- Linlin Zhang
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Qingbo Zhang
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Daniel T Hinojosa
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Kaiyi Jiang
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Quoc-Khanh Pham
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
| | - Zhen Xiao
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Vicki L Colvin
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Gang Bao
- Department of Bioengineering, Rice University, Houston, Texas 77030, United States
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