Evaluation of In Vivo Toxicity of Biological Nanoparticles


Posted: 2021-09-20 19:00:00
Curr Protoc . 2021 Sep;1(9):e249. doi: 10.1002/cpz1.249. Affiliations Expand Affiliations 1 Department of Transplantation, Mayo Clinic, Jacksonville, Florida. 2 Department of Biochemistry and Molecular Biology, Mayo Clinic, Jacksonville, Florida. Item in Clipboard Julia Driscoll et al. Curr Protoc. 2021 Sep. Show details Display options Display options Format Curr Protoc . 2021 Sep;1(9):e249. doi: 10.1002/cpz1.249. Affiliations 1 Department of Transplantation, Mayo Clinic, Jacksonville, Florida. 2 Department of Biochemistry and Molecular Biology, Mayo Clinic, Jacksonville, Florida. Item in Clipboard CiteDisplay options Display options Format Abstract Biologically derived nanoparticles such as extracellular vesicles are promising candidates for therapeutic applications. In vivo toxicity of biological nanoparticles can result in tissue or organ damage, immunological perturbations, or developmental effects but cannot be readily predicted from in vitro studies. Therefore, an essential component of the preclinical assessment of these particles for their use as therapeutics requires screening for adverse effects and detailed characterization of their toxicity in vivo. However, there are no standardized, comprehensive methods to evaluate the toxicity profile of nanoparticle treatment in a preclinical model. Here, we first describe a method to prepare bovine milk-derived nanovesicles (MNVs). These MNVs are inexpensive to isolate, have a scalable production platform, and can be modified to achieve a desired biological effect. We also describe two vertebrate animal models, mice and zebrafish, that can be employed to evaluate the toxicity profile of biologically derived nanoparticles, using MNVs as an example. Treatment-induced organ toxicity and immunological effects can be assessed in mice receiving systemic injections of MNVs, and developmental toxicity can be assessed in zebrafish embryos exposed to MNVs in embryo water. Utilizing these animal models provides opportunities to analyze the toxicity profiles of therapeutic extracellular vesicles in vivo. © 2021 Wiley Periodicals LLC. Basic Protocol 1: Preparation of milk-derived nanovesicles Basic Protocol 2: In vivo screening for organ toxicity and immune cell profiling using mice Basic Protocol 3: In vivo developmental toxicity screening using zebrafish. Keywords: biological nanoparticles; developmental toxicity; nanotherapeutics; safety; zebrafish. © 2021 Wiley Periodicals LLC. References Literature Cited Bijl, E., de Vries, R., van Valenberg, H., Huppertz, T., & van Hooijdonk, T. (2014). Factors influencing casein micelle size in milk of individual cows: Genetic variants and glycosylation of κ-casein. International Dairy Journal, 34(1), 135-141. doi: 10.1016/j.idairyj.2013.08.001. Cohen, O., Betzer, O., Elmaliach-Pnini, N., Motiei, M., Sadan, T., Cohen-Berkman, M., … Popovtzer, R. (2021). ‘Golden’ exosomes as delivery vehicles to target tumors and overcome intratumoral barriers: In vivo tracking in a model for head and neck cancer. Biomaterials Science, 9(6), 2103-2114. doi: 10.1039/d0bm01735c. Davoodi, S. H., Shahbazi, R., Esmaeili, S., Sohrabvandi, S., Mortazavian, A., Jazayeri, S., & Taslimi, A. (2016). Health-related aspects of milk proteins. Iranian Journal of Pharmaceutical Research, 15(3), 573-591. Donovan, J., & Brown, P. (2006). Euthanasia. Current Protocols in Immunology, 73, 1.8.1-1.8.4. doi: 10.1002/0471142735.im0108s73. Gardiner, C., Di Vizio, D., Sahoo, S., Théry, C., Witwer, K. W., Wauben, M., & Hill, A. F. (2016). Techniques used for the isolation and characterization of extracellular vesicles: Results of a worldwide survey. Journal of Extracellular Vesicles, 5, 32945. doi: 10.3402/jev.v5.32945. Show all 38 references Grant support [x] Cite Copy Format: Send To [x]

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バイオクイックニュース日本語版:エクソソーム特集

バイオクイックニュース日本語版
9月 27, 2021 バイオアソシエイツ

天然の機能を持つ合成エクソソームを開発。創傷治癒や新しい血管の形成を制御・支援する重要なメカニズムが明らかに。

マックスプランク医学研究所(ドイツ・ハイデルベルグ)とDWIライプニッツ相互作用材料研究所(ドイツ・アーヘン)の研究者らは、創傷閉鎖時の細胞シグナルを制御する合成エクソソームを開発した。この合成構造は、体内のさまざまなプロセスで細胞間のコミュニケーションに基本的な役割を果たしている、天然の細胞外小胞[編集部注:エクソソームは細胞外小胞のサブセット]に似せて作られている。この研究者は、創傷治癒や新しい血管の形成を制御・支援する重要なメカニズムを明らかにした。細胞から天然の細胞外小胞を分離するのではなく、プログラム可能…

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