| Cellular fate of deformable needle-shaped PLGA-PEG fibers | |
Zhang BK1,3; Zhu ML(朱鸣柳)2,7 ; Li Z3,6; Lung PS1; Chrzanowski W4; Kwok CT5; Lu J2,8; Li Q1
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| Source Publication | ACTA BIOMATERIALIA
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| 2020-08-01 | |
| Volume | 112Pages:182-189 |
| ISSN | 1742-7061 |
| Abstract | Deformability of micro/nanometer sized particles plays an important role in particle-cell interactions and thus becomes a key parameter in carrier design in biomedicine application such as drug delivery and vaccinology. Yet the influence of material's deformability on the cellular fate of the particles as well as physiology response of live cells are to be understood. Here we show the cellular fate of needle shaped (high aspect ratio similar to 25) PLGA-PEG copolymer fibers depending on their deformability. We found that all the fibers entered murine macrophage cells (RAW 264.7) via phagocytosis. While the fibers of high apparent Young's modulus (average value = 872 kPa) maintained their original shape upon phagocytosis, their counterparts of low apparent Young's modulus (average value = 56 kPa) curled in cells. The observed deformation of fibers of low apparent Young's modulus in cells coincided with abnormal intracellular actin translocation and absence of lysosome/phagosome fusion in macrophages, suggesting the important role of material mechanical properties and mechano-related cellular pathway in affecting cell physiology. Statement of Significance Particles are increasingly important in the field of biomedicine, especially when they are serving as drug carriers. Physical cues, such as mechanical properties, were shown to provide insight into their stability and influence on physiology inside the cell. In the current study, we managed to fabricate 5 types of needle shaped PLGA-PEG fibers with controlled Young's modulus. We found that hard fibers maintained their original shape upon phagocytosis, while soft fibers were curled by actin compressive force inside the cell, causing abnormal actin translocation and impediment of lysosome/phagosome fusion, suggesting the important role of material mechanical properties and mechano-related cellular pathway in affecting cell physiology. (c) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | Deformability Apparent Young's modulus Actin revolution |
| DOI | 10.1016/j.actbio.2020.05.029 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000549500900015 |
| WOS Keyword | NANOPARTICLE SIZE ; SURFACE-CHARGE ; DRUG-DELIVERY ; ACTIN ; FORCES ; POLYMERIZATION ; REQUIREMENTS ; PHAGOCYTOSIS ; CIRCULATION ; PARTICLES |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Biomedical ; Materials Science, Biomaterials |
| Funding Organization | Hong Kong Collaborative Research Fund (CRF) Scheme[C4026-17W] ; Theme-based Research Scheme[T13-402/17-N] |
| Classification | 一类 |
| Ranking | 2 |
| Contributor | Lu, Jian ; Li, Quan |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/84738 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China; 2.City Univ Hong Kong, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China; 3.Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen Key Lab Nanobiomech, Beijing, Peoples R China; 4.Univ Sydney, Fac Pharm, Sydney, NSW, Australia; 5.Univ Macau, Dept Electromech Engn, Zhuhai, Australia; 6.Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China; 7.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 West Rd,North 4th Ring, Beijing 100190, Peoples R China; 8.City Univ Hong Kong, Ctr Adv Struct Mat, Greater Bay Joint Div, Shenyang Natl Lab Mat Sci,Shenzhen Res Inst, Shenzhen 518057, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang BK,Zhu ML,Li Z,et al. Cellular fate of deformable needle-shaped PLGA-PEG fibers[J]. ACTA BIOMATERIALIA,2020,112:182-189.Rp_Au:Lu, Jian, Li, Quan |
| APA | Zhang BK.,朱鸣柳.,Li Z.,Lung PS.,Chrzanowski W.,...&Li Q.(2020).Cellular fate of deformable needle-shaped PLGA-PEG fibers.ACTA BIOMATERIALIA,112,182-189. |
| MLA | Zhang BK,et al."Cellular fate of deformable needle-shaped PLGA-PEG fibers".ACTA BIOMATERIALIA 112(2020):182-189. |
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| Jp2020182.pdf（2444KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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