1
|
Sun S, Liu Y, Gao H, Guan W, Zhao Y, Li G. Cell culture on suspended fiber for tissue regeneration: A review. Int J Biol Macromol 2024; 268:131827. [PMID: 38670204 DOI: 10.1016/j.ijbiomac.2024.131827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 04/16/2024] [Accepted: 04/22/2024] [Indexed: 04/28/2024]
Abstract
Cell culturing is a cornerstone of tissue engineering, playing a crucial role in tissue regeneration, drug screening, and the study of disease mechanisms. Among various culturing techniques, 3D culture systems, particularly those utilizing suspended fiber scaffolds, offer a more physiologically relevant environment than traditional 2D monolayer cultures. These 3D scaffolds enhance cell growth, differentiation, and proliferation by mimicking the in vivo cellular milieu. This review focuses on the critical role of suspended fiber scaffolds in tissue engineering. We compare the effectiveness of 3D suspended fiber scaffolds with 2D culture systems, discussing their respective benefits and limitations in the context of tissue regeneration. Furthermore, we explore the preparation methods of suspended fiber scaffolds and their potential applications. The review concludes by considering future research directions for optimizing suspended fiber scaffolds to address specific challenges in tissue regeneration, underscoring their significant promise in advancing tissue engineering and regenerative medicine.
Collapse
Affiliation(s)
- Shaolan Sun
- Co-innovation Center of Neuroregeneration, Key laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, 226001 Nantong, PR China
| | - Yaqiong Liu
- Co-innovation Center of Neuroregeneration, Key laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, 226001 Nantong, PR China
| | - Hongxia Gao
- Co-innovation Center of Neuroregeneration, Key laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, 226001 Nantong, PR China
| | - Wenchao Guan
- Co-innovation Center of Neuroregeneration, Key laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, 226001 Nantong, PR China
| | - Yahong Zhao
- Co-innovation Center of Neuroregeneration, Key laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, 226001 Nantong, PR China
| | - Guicai Li
- Co-innovation Center of Neuroregeneration, Key laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, 226001 Nantong, PR China; NMPA Key Laboratory for Quality Evaluation of Medical Protective and Implant Devices, 450018 Zhengzhou, PR China.
| |
Collapse
|
2
|
Sarkar A, Jana A, Agashe A, Wang J, Kapania R, Gov NS, DeLuca JG, Paul R, Nain AS. Confinement in fibrous environments positions and orients mitotic spindles. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.12.589246. [PMID: 38659898 PMCID: PMC11042200 DOI: 10.1101/2024.04.12.589246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Accurate positioning of the mitotic spindle within the rounded cell body is critical to physiological maintenance. Adherent mitotic cells encounter confinement from neighboring cells or the extracellular matrix (ECM), which can cause rotation of mitotic spindles and, consequently, titling of the metaphase plate (MP). To understand the positioning and orientation of mitotic spindles under confinement by fibers (ECM-confinement), we use flexible ECM-mimicking nanofibers that allow natural rounding of the cell body while confining it to differing levels. Rounded mitotic bodies are anchored in place by actin retraction fibers (RFs) originating from adhesion clusters on the ECM-mimicking fibers. We discover the extent of ECM-confinement patterns RFs in 3D: triangular and band-like at low and high confinement, respectively. A stochastic Monte-Carlo simulation of the centrosome (CS), chromosome (CH), membrane interactions, and 3D arrangement of RFs on the mitotic body recovers MP tilting trends observed experimentally. Our mechanistic analysis reveals that the 3D shape of RFs is the primary driver of the MP rotation. Under high ECM-confinement, the fibers can mechanically pinch the cortex, causing the MP to have localized deformations at contact sites with fibers. Interestingly, high ECM-confinement leads to low and high MP tilts, which mechanistically depend upon the extent of cortical deformation, RF patterning, and MP position. We identify that cortical deformation and RFs work in tandem to limit MP tilt, while asymmetric positioning of MP leads to high tilts. Overall, we provide fundamental insights into how mitosis may proceed in fibrous ECM-confining microenvironments in vivo.
Collapse
Affiliation(s)
- Apurba Sarkar
- School of Mathematical and Computational Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Aniket Jana
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061
| | - Atharva Agashe
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061
| | - Ji Wang
- Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA 24061
| | - Rakesh Kapania
- Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, VA
| | - Nir S. Gov
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Jennifer G. DeLuca
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, CO 80523
| | - Raja Paul
- School of Mathematical and Computational Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Amrinder S. Nain
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061
- Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA 24061
| |
Collapse
|
3
|
Aazmi A, Zhang D, Mazzaglia C, Yu M, Wang Z, Yang H, Huang YYS, Ma L. Biofabrication methods for reconstructing extracellular matrix mimetics. Bioact Mater 2024; 31:475-496. [PMID: 37719085 PMCID: PMC10500422 DOI: 10.1016/j.bioactmat.2023.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 09/19/2023] Open
Abstract
In the human body, almost all cells interact with extracellular matrices (ECMs), which have tissue and organ-specific compositions and architectures. These ECMs not only function as cellular scaffolds, providing structural support, but also play a crucial role in dynamically regulating various cellular functions. This comprehensive review delves into the examination of biofabrication strategies used to develop bioactive materials that accurately mimic one or more biophysical and biochemical properties of ECMs. We discuss the potential integration of these ECM-mimics into a range of physiological and pathological in vitro models, enhancing our understanding of cellular behavior and tissue organization. Lastly, we propose future research directions for ECM-mimics in the context of tissue engineering and organ-on-a-chip applications, offering potential advancements in therapeutic approaches and improved patient outcomes.
Collapse
Affiliation(s)
- Abdellah Aazmi
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310058, China
- School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Duo Zhang
- Department of Engineering, University of Cambridge, Cambridge, United Kingdom
- School of Medicine, The Chinese University of Hong Kong, Shenzhen, Guangdong, 51817, China
| | - Corrado Mazzaglia
- Department of Engineering, University of Cambridge, Cambridge, United Kingdom
| | - Mengfei Yu
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Zhen Wang
- Center for Laboratory Medicine, Allergy Center, Department of Transfusion Medicine, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Huayong Yang
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310058, China
- School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Yan Yan Shery Huang
- Department of Engineering, University of Cambridge, Cambridge, United Kingdom
| | - Liang Ma
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310058, China
- School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
| |
Collapse
|
4
|
Graybill PM, Jacobs EJ, Jana A, Agashe A, Nain AS, Davalos RV. Ultra-thin and ultra-porous nanofiber networks as a basement-membrane mimic. LAB ON A CHIP 2023; 23:4565-4578. [PMID: 37772328 PMCID: PMC10623910 DOI: 10.1039/d3lc00304c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
Current basement membrane (BM) mimics used for modeling endothelial and epithelial barriers in vitro do not faithfully recapitulate key in vivo physiological properties such as BM thickness, porosity, stiffness, and fibrous composition. Here, we use networks of precisely arranged nanofibers to form ultra-thin (∼3 μm thick) and ultra-porous (∼90%) BM mimics for blood-brain barrier modeling. We show that these nanofiber networks enable close contact between endothelial monolayers and pericytes across the membrane, which are known to regulate barrier tightness. Cytoskeletal staining and transendothelial electrical resistance (TEER) measurements reveal barrier formation on nanofiber membranes integrated within microfluidic devices and transwell inserts. Further, significantly higher TEER values indicate a biological benefit for co-cultures formed on the ultra-thin nanofiber membranes. Our BM mimic overcomes critical technological challenges in forming co-cultures that are in proximity and facilitate cell-cell contact, while still being constrained to their respective sides. We anticipate that our nanofiber networks will find applications in drug discovery, cell migration, and barrier dysfunction studies.
Collapse
Affiliation(s)
- Philip M Graybill
- Bioelectromechanical Systems Lab, Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA, USA.
| | - Edward J Jacobs
- Bioelectromechanical Systems Lab, Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA, USA.
| | - Aniket Jana
- Spinneret-Based Tunable Engineering Parameters (STEP) Lab, Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA, USA.
| | - Atharva Agashe
- Spinneret-Based Tunable Engineering Parameters (STEP) Lab, Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA, USA.
| | - Amrinder S Nain
- Spinneret-Based Tunable Engineering Parameters (STEP) Lab, Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA, USA.
| | - Rafael V Davalos
- Bioelectromechanical Systems Lab, Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA, USA.
| |
Collapse
|
5
|
Jacobs IV EJ, Graybill PM, Jana A, Agashe A, Nain AS, Davalos RV. Engineering high post-electroporation viabilities and transfection efficiencies for elongated cells on suspended nanofiber networks. Bioelectrochemistry 2023; 152:108415. [PMID: 37011476 DOI: 10.1016/j.bioelechem.2023.108415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/14/2023] [Accepted: 03/12/2023] [Indexed: 04/03/2023]
Abstract
The impact of cell shape on cell membrane permeabilization by pulsed electric fields is not fully understood. For certain applications, cell survival and recovery post-treatment is either desirable, as in gene transfection, electrofusion, and electrochemotherapy, or is undesirable, as in tumor and cardiac ablations. Understanding of how morphology affects cell viability post-electroporation may lead to improved electroporation methods. In this study, we use precisely aligned nanofiber networks within a microfluidic device to reproducibly generate elongated cells with controlled orientations to an applied electric field. We show that cell viability is significantly dependent on cell orientation, elongation, and spread. Further, these trends are dependent on the external buffer conductivity. Additionally, we see that cell survival for elongated cells is still supported by the standard pore model of electroporation. Lastly, we see that manipulating the cell orientation and shape can be leveraged for increased transfection efficiencies when compared to spherical cells. An improved understanding of cell shape and pulsation buffer conductivity may lead to improved methods for enhancing cell viability post-electroporation by engineering the cell morphology, cytoskeleton, and electroporation buffer conditions.
Collapse
|
6
|
Jana A, Tran A, Gill A, Kiepas A, Kapania RK, Konstantopoulos K, Nain AS. Sculpting Rupture-Free Nuclear Shapes in Fibrous Environments. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2203011. [PMID: 35863910 PMCID: PMC9443471 DOI: 10.1002/advs.202203011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Indexed: 05/07/2023]
Abstract
Cytoskeleton-mediated force transmission regulates nucleus morphology. How nuclei shaping occurs in fibrous in vivo environments remains poorly understood. Here suspended nanofiber networks of precisely tunable (nm-µm) diameters are used to quantify nucleus plasticity in fibrous environments mimicking the natural extracellular matrix. Contrary to the apical cap over the nucleus in cells on 2-dimensional surfaces, the cytoskeleton of cells on fibers displays a uniform actin network caging the nucleus. The role of contractility-driven caging in sculpting nuclear shapes is investigated as cells spread on aligned single fibers, doublets, and multiple fibers of varying diameters. Cell contractility increases with fiber diameter due to increased focal adhesion clustering and density of actin stress fibers, which correlates with increased mechanosensitive transcription factor Yes-associated protein (YAP) translocation to the nucleus. Unexpectedly, large- and small-diameter fiber combinations lead to teardrop-shaped nuclei due to stress fiber anisotropy across the cell. As cells spread on fibers, diameter-dependent nuclear envelope invaginations that run the nucleus's length are formed at fiber contact sites. The sharpest invaginations enriched with heterochromatin clustering and sites of DNA repair are insufficient to trigger nucleus rupture. Overall, the authors quantitate the previously unknown sculpting and adaptability of nuclei to fibrous environments with pathophysiological implications.
Collapse
Affiliation(s)
- Aniket Jana
- Department of Mechanical EngineeringVirginia TechBlacksburgVA24061USA
| | - Avery Tran
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMD21218USA
| | - Amritpal Gill
- Department of Mechanical EngineeringVirginia TechBlacksburgVA24061USA
| | - Alexander Kiepas
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMD21218USA
| | - Rakesh K. Kapania
- Kevin T. Crofton Department of Aerospace EngineeringVirginia TechBlacksburgVA24061USA
| | | | - Amrinder S. Nain
- Department of Mechanical EngineeringVirginia TechBlacksburgVA24061USA
| |
Collapse
|
7
|
Liu W, Padhi A, Zhang X, Narendran J, Anastasio MA, Nain AS, Irudayaraj J. Dynamic Heterochromatin States in Anisotropic Nuclei of Cells on Aligned Nanofibers. ACS NANO 2022; 16:10754-10767. [PMID: 35803582 PMCID: PMC9332347 DOI: 10.1021/acsnano.2c02660] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The cancer cell nucleus deforms as it invades the interstitial spaces in tissues and the tumor microenvironment. While alteration of the chromatin structure in a deformed nucleus is expected and documented, the chromatin structure in the nuclei of cells on aligned matrices has not been elucidated. In this work we elucidate the spatiotemporal organization of heterochromatin in the elongated nuclei of cells on aligned nanofibers with stimulated emission depletion nanoscopy and fluorescence correlation spectroscopy. We show that the anisotropy of nuclei is sufficient to drive H3K9me3-heterochromatin alterations, with enhanced H3K9me3 nanocluster compaction and aggregation states that otherwise are indistinguishable from diffraction-limited microscopy. We interrogated the higher-order heterochromatin structures within major chromatin compartments in anisotropic nuclei and discovered a wider spatial dispersion of nanodomain clusters in the nucleoplasm and condensed larger nanoclusters near the periphery and pericentromeric heterochromatin. Upon examining the spatiotemporal dynamics of heterochromatin in anisotropic nuclei, we observed reduced mobility of the constitutive heterochromatin mark H3K9me3 and the associated heterochromatin protein 1 (HP1α) at the nucleoplasm and periphery regions, correlating with increased viscosity and changes in gene expression. Since heterochromatin remodeling is crucial to genome integrity, our results reveal an unconventional H3K9me3 heterochromatin distribution, providing cues to an altered chromatin state due to perturbations of the nuclei in aligned fiber configurations.
Collapse
Affiliation(s)
- Wenjie Liu
- Department
of Bioengineering, University of Illinois
at Urbana−Champaign, 1102 Everitt Lab, 1406 W. Green Street, Urbana, Illinois 61801, United States
- Biomedical
Research Center, Mills Breast Cancer Institute, Cancer Center at Illinois,
Micro and Nanotechnology Laboratory, Beckman
Institute, Carl Woese Institute for Genomic Biology, Urbana, Illinois 61801, United States
| | - Abinash Padhi
- Department
of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Xiaohui Zhang
- Department
of Bioengineering, University of Illinois
at Urbana−Champaign, 1102 Everitt Lab, 1406 W. Green Street, Urbana, Illinois 61801, United States
| | - Jairaj Narendran
- Department
of Bioengineering, University of Illinois
at Urbana−Champaign, 1102 Everitt Lab, 1406 W. Green Street, Urbana, Illinois 61801, United States
| | - Mark A. Anastasio
- Department
of Bioengineering, University of Illinois
at Urbana−Champaign, 1102 Everitt Lab, 1406 W. Green Street, Urbana, Illinois 61801, United States
| | - Amrinder S. Nain
- Department
of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Joseph Irudayaraj
- Department
of Bioengineering, University of Illinois
at Urbana−Champaign, 1102 Everitt Lab, 1406 W. Green Street, Urbana, Illinois 61801, United States
- Biomedical
Research Center, Mills Breast Cancer Institute, Cancer Center at Illinois,
Micro and Nanotechnology Laboratory, Beckman
Institute, Carl Woese Institute for Genomic Biology, Urbana, Illinois 61801, United States
| |
Collapse
|
8
|
Tunneling Nanotubes between Cells Migrating in ECM Mimicking Fibrous Environments. Cancers (Basel) 2022; 14:cancers14081989. [PMID: 35454893 PMCID: PMC9030013 DOI: 10.3390/cancers14081989] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 04/04/2022] [Indexed: 12/28/2022] Open
Abstract
Simple Summary Tumor cells grow, spread, and invade in a three-dimensional manner, but most experimental approaches in cancer cell biology focus on the behavior of cells in two-dimensional spaces. Patterns of cell invasion and spread in 2D may not accurately depict cell behavior in 3D tumors. We cultivated and investigated malignant mesothelioma cells on a 3D scaffold composed of nanofibers positioned in parallel and crosshatched network configurations to overcome this barrier. We focused on studying long extensions called tunneling nanotubes (TNTs) protruding from cells and connecting with other cells, which have been shown to transmit signals from cell to cell and extend into the tumor microenvironments in a 3D manner. This manuscript describes the biophysics of the formation and function of cancer cell TNTs. These findings will impact the research community by accurately assessing how TNTs affect cancer cell invasion and migration in their natural 3D microenvironment using a novel bioengineered platform. Abstract Tunneling nanotubes (TNTs) comprise a unique class of actin-rich nanoscale membranous protrusions. They enable long-distance intercellular communication and may play an integral role in tumor formation, progression, and drug resistance. TNTs are three-dimensional, but nearly all studies have investigated them using two-dimensional cell culture models. Here, we applied a unique 3D culture platform consisting of crosshatched and aligned fibers to fabricate synthetic suspended scaffolds that mimic the native fibrillar architecture of tumoral extracellular matrix (ECM) to characterize TNT formation and function in its native state. TNTs are upregulated in malignant mesothelioma; we used this model to analyze the biophysical properties of TNTs in this 3D setting, including cell migration in relation to TNT dynamics, rate of TNT-mediated intercellular transport of cargo, and conformation of TNT-forming cells. We found that highly migratory elongated cells on aligned fibers formed significantly longer but fewer TNTs than uniformly spread cells on crossing fibers. We developed new quantitative metrics for the classification of TNT morphologies based on shape and cytoskeletal content using confocal microscopy. In sum, our strategy for culturing cells in ECM-mimicking bioengineered scaffolds provides a new approach for accurate biophysical and biologic assessment of TNT formation and structure in native fibrous microenvironments.
Collapse
|
9
|
Mukherjee A, Zhang H, Ladner K, Brown M, Urbanski J, Grieco JP, Kapania RK, Lou E, Behkam B, Schmelz EM, Nain AS. Quantitative Biophysical Metrics for Rapid Evaluation of Ovarian Cancer Metastatic Potential. Mol Biol Cell 2022; 33:ar55. [PMID: 34985924 PMCID: PMC9265161 DOI: 10.1091/mbc.e21-08-0419] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Ovarian cancer is routinely diagnosed long after the disease has metastasized through the fibrous sub-mesothelium. Despite extensive research in the field linking ovarian cancer progression to increasingly poor prognosis, there are currently no validated cellular markers or hallmarks of ovarian cancer that can predict metastatic potential. To discern disease progression across a syngeneic mouse ovarian cancer progression model, here, we fabricated extracellular-matrix mimicking suspended fiber networks: crosshatches of mismatch diameters for studying protrusion dynamics, aligned same diameter networks of varying inter-fiber spacing for studying migration, and aligned nanonets for measuring cell forces. We found that migration correlated with disease, while force-disease biphasic relationship exhibited f-actin stress-fiber network dependence. However, unique to suspended fibers, coiling occurring at tips of protrusions and not the length or breadth of protrusions displayed strongest correlation with metastatic potential. To confirm that our findings were more broadly applicable beyond the mouse model, we repeated our studies in human ovarian cancer cell lines and found that the biophysical trends were consistent with our mouse model results. Altogether, we report complementary high throughput and high content biophysical metrics capable of identifying ovarian cancer metastatic potential on time scale of hours. [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text] [Media: see text].
Collapse
Affiliation(s)
| | - Haonan Zhang
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA
| | - Katherine Ladner
- Division of Hematology, Oncology and Transplantation, Masonic Cancer Center, University of Minnesota, Minneapolis, MN
| | - Megan Brown
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, VA
| | - Jacob Urbanski
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA
| | - Joseph P Grieco
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, VA
| | - Rakesh K Kapania
- Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, VA
| | - Emil Lou
- Division of Hematology, Oncology and Transplantation, Masonic Cancer Center, University of Minnesota, Minneapolis, MN
| | - Bahareh Behkam
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA
| | - Eva M Schmelz
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, VA
| | - Amrinder S Nain
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA
| |
Collapse
|
10
|
Abstract
The idea of creating replacement for damaged or diseased tissue, which will mimic the physiological conditions and simultaneously promote regeneration by patients’ own cells, has been a major challenge in the biomedicine for more than a decade. Therefore, nanofibers are a promising solution to address these challenges. Nanofiber technology is an exciting area attracting the attention of many researchers as a potential solution to these current challenges in the biomedical field such as burn and wound care, organ repair, and treatment for osteoporosis and various diseases. Nanofibers mimic the porous topography of natural extracellular matrix (ECM), hence they are advantageous for tissue regeneration . In biomedical engineering, electrospinning exhibits advantages as a tissue engineering scaffolds producer, which can make appropriate resemblance in physical structure with ECM. This is because of the nanometer scale of ECM fibrils in diameter, which can be mimicked by electrospinning procedure as well as its porous structure. In this review, the applications of nanofibers in various biomedical areas such as tissue engineering, wound dressing and facemask, are summarized. It provides opportunities to develop new materials and techniques that improve the ability for developing quick, sensitive and reliable analytical techniques.
Collapse
Affiliation(s)
- A. Ghajarieh
- Young Researchers and Elite Club, Department of Textile Engineering, Yadegar-e-Imam Khomeini (RAH) Shahr-e Rey Branch, Islamic Azad University, 1815163111 Tehran, Iran
| | - S. Habibi
- Department of Textile Engineering, Islamic Azad University, Yadegar-e-Imam Khomeini (RAH) Shahr-e Rey Branch, 1815163111 Tehran, Iran
| | - A. Talebian
- Department of Textile Engineering, Islamic Azad University, Yadegar-e-Imam Khomeini (RAH) Shahr-e Rey Branch, 1815163111 Tehran, Iran
| |
Collapse
|
11
|
Davis ZG, Hussain AF, Fisher MB. Processing variables of direct-write, near-field electrospinning impact size and morphology of gelatin fibers. Biomed Mater 2021; 16. [PMID: 33857922 DOI: 10.1088/1748-605x/abf88b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 04/15/2021] [Indexed: 11/12/2022]
Abstract
Several biofabrication methods are being investigated to produce scaffolds that can replicate the structure of the extracellular matrix. Direct-write, near-field electrospinning of polymer solutions and electrowriting of polymer melts are methods which combine fine fiber formation with computer-guided control. Research with such systems has focused primarily on synthetic polymers. To better understand the behavior of biopolymers used for direct-writing, this project investigated changes in fiber morphology, size, and variability caused by varying gelatin and acetic acid concentration, as well as process parameters such as needle gauge and height, stage speed, and interfiber spacing. Increasing gelatin concentration at a constant acetic acid concentration improved fiber morphology from large, planar structures to small, linear fibers with a median of 2.3 µm. Further varying the acetic acid concentration at a constant gelatin concentration did not alter fiber morphology and diameter throughout the range tested. Varying needle gauge and height further improved the median fiber diameter to below 2 µm and variability of the first and third quartiles to within ±1 µm of the median. Additional adjustment of stage speed did not impact the fiber morphology or diameter. Repeatable interfiber spacings down to 250 µm were shown to be capable with the system. In summary, this study illustrates the optimization of processing parameters for direct-writing of gelatin to produce fibers on the scale of collagen fibers. This system is thus capable of replicating the fibrous structure of musculoskeletal tissues with biologically relevant materials which will provide a durable platform for the analysis of single cell-fiber interactions to help better understand the impact scaffold materials and dimensions have on cell behavior.
Collapse
Affiliation(s)
- Zachary G Davis
- Department of Biomedical Engineering, North Carolina State University, 4130 Engineering Building III, Raleigh, NC 27695, United States of America.,University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States of America.,Comparative Medicine Institute, North Carolina State University, Raleigh, NC 27695, United States of America
| | - Aasim F Hussain
- Department of Biomedical Engineering, North Carolina State University, 4130 Engineering Building III, Raleigh, NC 27695, United States of America.,University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States of America
| | - Matthew B Fisher
- Department of Biomedical Engineering, North Carolina State University, 4130 Engineering Building III, Raleigh, NC 27695, United States of America.,University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States of America.,Department of Orthopaedics, University of North Carolina School of Medicine, Chapel Hill, NC 25799, United States of America.,Comparative Medicine Institute, North Carolina State University, Raleigh, NC 27695, United States of America
| |
Collapse
|
12
|
Rather AH, Wani TU, Khan RS, Pant B, Park M, Sheikh FA. Prospects of Polymeric Nanofibers Loaded with Essential Oils for Biomedical and Food-Packaging Applications. Int J Mol Sci 2021; 22:4017. [PMID: 33924640 PMCID: PMC8069027 DOI: 10.3390/ijms22084017] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/09/2021] [Accepted: 04/09/2021] [Indexed: 02/08/2023] Open
Abstract
Essential oils prevent superbug formation, which is mainly caused by the continuous use of synthetic drugs. This is a significant threat to health, the environment, and food safety. Plant extracts in the form of essential oils are good enough to destroy pests and fight bacterial infections in animals and humans. In this review article, different essential oils containing polymeric nanofibers fabricated by electrospinning are reviewed. These nanofibers containing essential oils have shown applications in biomedical applications and as food-packaging materials. This approach of delivering essential oils in nanoformulations has attracted considerable attention in the scientific community due to its low price, a considerable ratio of surface area to volume, versatility, and high yield. It is observed that the resulting nanofibers possess antimicrobial, anti-inflammatory, and antioxidant properties. Therefore, they can reduce the use of toxic synthetic drugs that are utilized in the cosmetics, medicine, and food industries. These nanofibers increase barrier properties against light, oxygen, and heat, thereby protecting and preserving the food from oxidative damage. Moreover, the nanofibers discussed are introduced with naturally derived chemical compounds in a controlled manner, which simultaneously prevents their degradation. The nanofibers loaded with different essential oils demonstrate an ability to increase the shelf-life of various food products while using them as active packaging materials.
Collapse
Affiliation(s)
- Anjum Hamid Rather
- Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India; (A.H.R.); (T.U.W.); (R.S.K.)
| | - Taha Umair Wani
- Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India; (A.H.R.); (T.U.W.); (R.S.K.)
| | - Rumysa Saleem Khan
- Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India; (A.H.R.); (T.U.W.); (R.S.K.)
| | - Bishweshwar Pant
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju-Gun 55338, Jeollabuk-do, Korea;
| | - Mira Park
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju-Gun 55338, Jeollabuk-do, Korea;
| | - Faheem A. Sheikh
- Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India; (A.H.R.); (T.U.W.); (R.S.K.)
| |
Collapse
|
13
|
Padhi A, Danielsson BE, Alabduljabbar DS, Wang J, Conway DE, Kapania RK, Nain AS. Cell Fragment Formation, Migration, and Force Exertion on Extracellular Mimicking Fiber Nanonets. Adv Biol (Weinh) 2021; 5:e2000592. [PMID: 33759402 DOI: 10.1002/adbi.202000592] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/01/2021] [Indexed: 12/16/2022]
Abstract
Cell fragments devoid of the nucleus play an essential role in intercellular communication. Mostly studied on flat 2D substrates, their origins and behavior in native fibrous environments remain unknown. Here, cytoplasmic fragments' spontaneous formation and behavior in suspended extracellular matrices mimicking fiber architectures (parallel, crosshatch, and hexagonal) are described. After cleaving from the parent cell body, the fragments of diverse shapes on fibers migrate faster compared to 2D. Furthermore, while fragments in 2D are mostly circular, a higher number of rectangular and blob-like shapes are formed on fibers, and, interestingly, each shape is capable of forming protrusive structures. Absent in 2D, fibers' fragments display oscillatory migratory behavior with dramatic shape changes, sometimes remarkably sustained over long durations (>20 h). Immunostaining reveals paxillin distribution along fragment body-fiber length, while Forster Resonance Energy Transfer imaging of vinculin reveals mechanical loading of fragment adhesions comparable to whole cell adhesions. Using nanonet force microscopy, the forces exerted by fragments are estimated, and peculiarly small area fragments can exert forces similar to larger fragments in a Rho-associated kinase dependent manner. Overall, fragment dynamics on 2D substrates are insufficient to describe the mechanosensitivity of fragments to fibers, and the architecture of fiber networks can generate entirely new behaviors.
Collapse
Affiliation(s)
- Abinash Padhi
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Brooke E Danielsson
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, 23284, USA
| | - Deema S Alabduljabbar
- Department of Biomedical Engineering, University of California, Davis, CA, 95616, USA
| | - Ji Wang
- Department of Engineering Science and Mechanics, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Daniel E Conway
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, 23284, USA
| | - Rakesh K Kapania
- Kevin T. Crofton Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Amrinder S Nain
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA, 24061, USA
| |
Collapse
|
14
|
Rules of contact inhibition of locomotion for cells on suspended nanofibers. Proc Natl Acad Sci U S A 2021; 118:2011815118. [PMID: 33737392 DOI: 10.1073/pnas.2011815118] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Contact inhibition of locomotion (CIL), in which cells repolarize and move away from contact, is now established as a fundamental driving force in development, repair, and disease biology. Much of what we know of CIL stems from studies on two-dimensional (2D) substrates that do not provide an essential biophysical cue-the curvature of extracellular matrix fibers. We discover rules controlling outcomes of cell-cell collisions on suspended nanofibers and show them to be profoundly different from the stereotyped CIL behavior on 2D substrates. Two approaching cells attached to a single fiber do not repolarize upon contact but rather usually migrate past one another. Fiber geometry modulates this behavior; when cells attach to two fibers, reducing their freedom to reorient, only one cell repolarizes on contact, leading to the cell pair migrating as a single unit. CIL outcomes also change when one cell has recently divided and moves with high speed-cells more frequently walk past each other. Our computational model of CIL in fiber geometries reproduces the core qualitative results of the experiments robustly to model parameters. Our model shows that the increased speed of postdivision cells may be sufficient to explain their increased walk-past rate. We also identify cell-cell adhesion as a key mediator of collision outcomes. Our results suggest that characterizing cell-cell interactions on flat substrates, channels, or micropatterns is not sufficient to predict interactions in a matrix-the geometry of the fiber can generate entirely new behaviors.
Collapse
|
15
|
Graybill PM, Jana A, Kapania RK, Nain AS, Davalos RV. Single Cell Forces after Electroporation. ACS NANO 2021; 15:2554-2568. [PMID: 33236888 PMCID: PMC10949415 DOI: 10.1021/acsnano.0c07020] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Exogenous high-voltage pulses increase cell membrane permeability through a phenomenon known as electroporation. This process may also disrupt the cell cytoskeleton causing changes in cell contractility; however, the contractile signature of cell force after electroporation remains unknown. Here, single-cell forces post-electroporation are measured using suspended extracellular matrix-mimicking nanofibers that act as force sensors. Ten, 100 μs pulses are delivered at three voltage magnitudes (500, 1000, and 1500 V) and two directions (parallel and perpendicular to cell orientation), exposing glioblastoma cells to electric fields between 441 V cm-1 and 1366 V cm-1. Cytoskeletal-driven force loss and recovery post-electroporation involves three distinct stages. Low electric field magnitudes do not cause disruption, but higher fields nearly eliminate contractility 2-10 min post-electroporation as cells round following calcium-mediated retraction (stage 1). Following rounding, a majority of analyzed cells enter an unusual and unexpected biphasic stage (stage 2) characterized by increased contractility tens of minutes post-electroporation, followed by force relaxation. The biphasic stage is concurrent with actin disruption-driven blebbing. Finally, cells elongate and regain their pre-electroporation morphology and contractility in 1-3 h (stage 3). With increasing voltages applied perpendicular to cell orientation, we observe a significant drop in cell viability. Experiments with multiple healthy and cancerous cell lines demonstrate that contractile force is a more dynamic and sensitive metric than cell shape to electroporation. A mechanobiological understanding of cell contractility post-electroporation will deepen our understanding of the mechanisms that drive recovery and may have implications for molecular medicine, genetic engineering, and cellular biophysics.
Collapse
Affiliation(s)
- Philip M Graybill
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Aniket Jana
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Rakesh K Kapania
- Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Amrinder S Nain
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
- School of Biomedical Engineering and Sciences, Virginia Tech-Wake Forest University, Blacksburg, Virginia 24061, United States
| | - Rafael V Davalos
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
- School of Biomedical Engineering and Sciences, Virginia Tech-Wake Forest University, Blacksburg, Virginia 24061, United States
| |
Collapse
|
16
|
Padhi A, Singh K, Franco-Barraza J, Marston DJ, Cukierman E, Hahn KM, Kapania RK, Nain AS. Force-exerting perpendicular lateral protrusions in fibroblastic cell contraction. Commun Biol 2020; 3:390. [PMID: 32694539 PMCID: PMC7374753 DOI: 10.1038/s42003-020-01117-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 06/29/2020] [Indexed: 02/06/2023] Open
Abstract
Aligned extracellular matrix fibers enable fibroblasts to undergo myofibroblastic activation and achieve elongated shapes. Activated fibroblasts are able to contract, perpetuating the alignment of these fibers. This poorly understood feedback process is critical in chronic fibrosis conditions, including cancer. Here, using fiber networks that serve as force sensors, we identify "3D perpendicular lateral protrusions" (3D-PLPs) that evolve from lateral cell extensions named twines. Twines originate from stratification of cyclic-actin waves traversing the cell and swing freely in 3D to engage neighboring fibers. Once engaged, a lamellum forms and extends multiple secondary twines, which fill in to form a sheet-like PLP, in a force-entailing process that transitions focal adhesions to activated (i.e., pathological) 3D-adhesions. The specific morphology of PLPs enables cells to increase contractility and force on parallel fibers. Controlling geometry of extracellular networks confirms that anisotropic fibrous environments support 3D-PLP formation and function, suggesting an explanation for cancer-associated desmoplastic expansion.
Collapse
Affiliation(s)
- Abinash Padhi
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Karanpreet Singh
- Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Janusz Franco-Barraza
- Cancer Biology Program, Marvin & Concetta Greenberg Pancreatic Cancer Institute, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Daniel J Marston
- Department of Pharmacology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Edna Cukierman
- Cancer Biology Program, Marvin & Concetta Greenberg Pancreatic Cancer Institute, Fox Chase Cancer Center, Philadelphia, PA, USA.
| | - Klaus M Hahn
- Department of Pharmacology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Rakesh K Kapania
- Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Amrinder S Nain
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA, USA.
| |
Collapse
|
17
|
Mohammadinejad R, Kumar A, Ranjbar-Mohammadi M, Ashrafizadeh M, Han SS, Khang G, Roveimiab Z. Recent Advances in Natural Gum-Based Biomaterials for Tissue Engineering and Regenerative Medicine: A Review. Polymers (Basel) 2020; 12:E176. [PMID: 31936590 PMCID: PMC7022386 DOI: 10.3390/polym12010176] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 01/05/2020] [Accepted: 01/06/2020] [Indexed: 02/06/2023] Open
Abstract
The engineering of tissues under a three-dimensional (3D) microenvironment is a great challenge and needs a suitable supporting biomaterial-based scaffold that may facilitate cell attachment, spreading, proliferation, migration, and differentiation for proper tissue regeneration or organ reconstruction. Polysaccharides as natural polymers promise great potential in the preparation of a three-dimensional artificial extracellular matrix (ECM) (i.e., hydrogel) via various processing methods and conditions. Natural polymers, especially gums, based upon hydrogel systems, provide similarities largely with the native ECM and excellent biological response. Here, we review the origin and physico-chemical characteristics of potentially used natural gums. In addition, various forms of scaffolds (e.g., nanofibrous, 3D printed-constructs) based on gums and their efficacy in 3D cell culture and various tissue regenerations such as bone, osteoarthritis and cartilage, skin/wound, retinal, neural, and other tissues are discussed. Finally, the advantages and limitations of natural gums are precisely described for future perspectives in tissue engineering and regenerative medicine in the concluding remarks.
Collapse
Affiliation(s)
- Reza Mohammadinejad
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman 7619813159, Iran;
| | - Anuj Kumar
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Korea
| | | | - Milad Ashrafizadeh
- Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz 5166616471, Iran;
| | - Sung Soo Han
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Korea
| | - Gilson Khang
- Department of Polymer Nano Science and Technology, Department of BIN Fusion Technology and BK-21 Polymer BIN Fusion Research Team, Chonbuk National University, Dukjin, Jeonju 54896, Korea;
| | - Ziba Roveimiab
- Department of Biological Sciences, and Department of Physics and Astronomy, University of Manitoba, Winnipeg, MB R3T 2N2, Canada;
| |
Collapse
|
18
|
Padhi A, Thomson AH, Perry JB, Davis GN, McMillan RP, Loesgen S, Kaweesa EN, Kapania R, Nain AS, Brown DA. Bioenergetics underlying single-cell migration on aligned nanofiber scaffolds. Am J Physiol Cell Physiol 2019; 318:C476-C485. [PMID: 31875698 DOI: 10.1152/ajpcell.00221.2019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Cell migration is centrally involved in a myriad of physiological processes, including morphogenesis, wound healing, tissue repair, and metastatic growth. The bioenergetics that underlie migratory behavior are not fully understood, in part because of variations in cell culture media and utilization of experimental cell culture systems that do not model physiological connective extracellular fibrous networks. In this study, we evaluated the bioenergetics of C2C12 myoblast migration and force production on fibronectin-coated nanofiber scaffolds of controlled diameter and alignment, fabricated using a nonelectrospinning spinneret-based tunable engineered parameters (STEP) platform. The contribution of various metabolic pathways to cellular migration was determined using inhibitors of cellular respiration, ATP synthesis, glycolysis, or glucose uptake. Despite immediate effects on oxygen consumption, mitochondrial inhibition only modestly reduced cell migration velocity, whereas inhibitors of glycolysis and cellular glucose uptake led to striking decreases in migration. The migratory metabolic sensitivity was modifiable based on the substrates present in cell culture media. Cells cultured in galactose (instead of glucose) showed substantial migratory sensitivity to mitochondrial inhibition. We used nanonet force microscopy to determine the bioenergetic factors responsible for single-cell force production and observed that neither mitochondrial nor glycolytic inhibition altered single-cell force production. These data suggest that myoblast migration is heavily reliant on glycolysis in cells grown in conventional media. These studies have wide-ranging implications for the causes, consequences, and putative therapeutic treatments aimed at cellular migration.
Collapse
Affiliation(s)
- Abinash Padhi
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia
| | - Alexander H Thomson
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, Virginia
| | - Justin B Perry
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, Virginia
| | - Grace N Davis
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, Virginia
| | - Ryan P McMillan
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, Virginia.,Virginia Tech Metabolism Core, Blacksburg, Virginia
| | - Sandra Loesgen
- Department of Chemistry, Oregon State University, Corvallis, Oregon
| | | | - Rakesh Kapania
- Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, Virginia
| | - Amrinder S Nain
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia
| | - David A Brown
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, Virginia.,Virginia Tech Center for Drug Discovery, Blacksburg, Virginia.,Virginia Tech Metabolism Core, Blacksburg, Virginia
| |
Collapse
|
19
|
Morrow CM, Mukherjee A, Traore MA, Leaman EJ, Kim A, Smith EM, Nain AS, Behkam B. Integrating nanofibers with biochemical gradients to investigate physiologically-relevant fibroblast chemotaxis. LAB ON A CHIP 2019; 19:3641-3651. [PMID: 31560021 DOI: 10.1039/c9lc00602h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Persistent cell migration can occur due to anisotropy in the extracellular matrix (ECM), the gradient of a chemo-effector, or a combination of both. Through a variety of in vitro platforms, the contributions of either stimulus have been extensively studied, while the combined effect of both cues remains poorly described. Here, we report an integrative microfluidic chemotaxis assay device that enables the study of single cell chemotaxis on ECM-mimicking, aligned, and suspended nanofibers. Using this assay, we evaluated the effect of fiber spacing on the morphology and chemotaxis response of embryonic murine NIH/3T3 fibroblasts in the presence of temporally invariant, linear gradients of platelet-derived growth factor-BB (PDGF-BB). We found that the strength of PDGF-mediated chemotaxis response depends on not only the gradient slope but also the cell morphology. Low aspect ratio (3.4 ± 0.2) cells on flat substrata exhibited a chemotaxis response only at a PDGF-BB gradient of 0-10 ng mL-1. However, high aspect ratio (19.1 ± 0.7) spindle-shaped cells attached to individual fibers exhibited maximal chemotaxis response at a ten-fold shallower gradient of 0-1 ng mL-1, which was robustly maintained up to 0-10 ng mL-1. Quadrilateral-shaped cells of intermediate aspect ratio (13.6 ± 0.8) attached to two fibers exhibited a weaker response compared to the spindle-shaped cells, but still stronger compared to cells attached to 2D featureless substrata. Through pharmacological inhibition, we show that the mesenchymal chemotaxis pathway is conserved in cells on fibers. Altogether, our findings show that chemotaxis on ECM-mimicking fibers is modulated by fiber spacing-driven cell shape and can be significantly different from the behavior observed on flat 2D substrata. We envisage that this microfluidic platform will have wide applicability in understanding the combined role of ECM architecture and chemotaxis in physiological and pathological processes.
Collapse
Affiliation(s)
- Carmen M Morrow
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Apratim Mukherjee
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Mahama A Traore
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA. and School of Biomedical Engineering & Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | - Eric J Leaman
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA.
| | - AhRam Kim
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Evan M Smith
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Amrinder S Nain
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA. and School of Biomedical Engineering & Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | - Bahareh Behkam
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA. and School of Biomedical Engineering & Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| |
Collapse
|
20
|
Jana A, Nookaew I, Singh J, Behkam B, Franco AT, Nain AS. Crosshatch nanofiber networks of tunable interfiber spacing induce plasticity in cell migration and cytoskeletal response. FASEB J 2019; 33:10618-10632. [PMID: 31225977 PMCID: PMC6766658 DOI: 10.1096/fj.201900131r] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 05/30/2019] [Indexed: 01/14/2023]
Abstract
Biomechanical cues within tissue microenvironments are critical for maintaining homeostasis, and their disruption can contribute to malignant transformation and metastasis. Once transformed, metastatic cancer cells can migrate persistently by adapting (plasticity) to changes in the local fibrous extracellular matrix, and current strategies to recapitulate persistent migration rely exclusively on the use of aligned geometries. Here, the controlled interfiber spacing in suspended crosshatch networks of nanofibers induces cells to exhibit plasticity in migratory behavior (persistent and random) and the associated cytoskeletal arrangement. At dense spacing (3 and 6 µm), unexpectedly, elongated cells migrate persistently (in 1 dimension) at high speeds in 3-dimensional shapes with thick nuclei, and short focal adhesion cluster (FAC) lengths. With increased spacing (18 and 36 µm), cells attain 2-dimensional morphologies, have flattened nuclei and longer FACs, and migrate randomly by rapidly detaching their trailing edges that strain the nuclei by ∼35%. At 54-µm spacing, kite-shaped cells become near stationary. Poorly developed filamentous actin stress fibers are found only in cells on 3-µm networks. Gene-expression profiling shows a decrease in transcriptional potential and a differential up-regulation of metabolic pathways. The consistency in observed phenotypes across cell lines supports using this platform to dissect hallmarks of plasticity in migration in vitro.-Jana, A., Nookaew, I., Singh, J., Behkam, B., Franco, A. T., Nain, A. S. Crosshatch nanofiber networks of tunable interfiber spacing induce plasticity in cell migration and cytoskeletal response.
Collapse
Affiliation(s)
- Aniket Jana
- Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | - Intawat Nookaew
- Department of Physiology and Biophysics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
- Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Jugroop Singh
- Department of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | - Bahareh Behkam
- Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
- Department of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | - Aime T. Franco
- Department of Physiology and Biophysics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Amrinder S. Nain
- Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
- Department of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| |
Collapse
|
21
|
Mukherjee A, Behkam B, Nain AS. Cancer Cells Sense Fibers by Coiling on them in a Curvature-Dependent Manner. iScience 2019; 19:905-915. [PMID: 31513975 PMCID: PMC6742781 DOI: 10.1016/j.isci.2019.08.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 04/01/2019] [Accepted: 08/13/2019] [Indexed: 01/09/2023] Open
Abstract
Metastatic cancer cells sense the complex and heterogeneous fibrous extracellular matrix (ECM) by formation of protrusions, and our knowledge of how cells physically recognize these fibers remains in its infancy. Here, using suspended ECM-mimicking isodiameter fibers ranging from 135 to 1,000 nm, we show that metastatic breast cancer cells sense fiber diameters differentially by coiling (wrapping-around) on them in a curvature-dependent manner, whereas non-tumorigenic cells exhibit diminished coiling. We report that coiling occurs at the tip of growing protrusions and the coil width and coiling rate increase in a curvature-dependent manner, but time to maximum coil width occurs biphasically. Interestingly, bundles of 135-nm diameter fibers recover coiling width and rate on 1,000-nm-diameter fibers. Coiling also coincides with curvature-dependent persistent and ballistic transport of endogenous granules inside the protrusions. Altogether, our results lay the groundwork to link biophysical sensing with biological signaling to quantitate pro- and anti-invasive fibrous environments. Video Abstract
Cells sense ECM-mimicking suspended fibers by coiling (wrapping around) Coiling occurs at the tip of growing protrusions in a curvature-dependent manner Non-tumorigenic cells exhibit diminished coiling compared with metastatic cells A bundle of small-diameter fibers recover coiling observed on a large-diameter fiber
Collapse
Affiliation(s)
- Apratim Mukherjee
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA
| | - Bahareh Behkam
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA
| | - Amrinder S Nain
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA.
| |
Collapse
|
22
|
Gill E, Willis S, Gerigk M, Cohen P, Zhang D, Li X, Huang YYS. Fabrication of Designable and Suspended Microfibers via Low-Voltage 3D Micropatterning. ACS APPLIED MATERIALS & INTERFACES 2019; 11:19679-19690. [PMID: 31081331 PMCID: PMC6613729 DOI: 10.1021/acsami.9b01258] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 05/13/2019] [Indexed: 05/02/2023]
Abstract
Building two-dimensional (2D) and three-dimensional (3D) fibrous structures in the micro- and nanoscale will offer exciting prospects for numerous applications spanning from sensors to energy storage and tissue engineering scaffolds. Electrospinning is a well-suited technique for drawing micro- to nanoscale fibers, but current methods of building electrospun fibers in 3D are restrictive in terms of printed height, design of macroscopic fiber networks, and choice of polymer. Here, we combine low-voltage electrospinning and additive manufacturing as a method to pattern layers of suspended mesofibers. Layers of fibers are suspended between 3D-printed supports in situ in multiple fiber layers and designable orientations. We examine the key working parameters to attain a threshold for fiber suspension, use those behavioral observations to establish a "fiber suspension indicator", and demonstrate its utility through design of intricate suspended fiber architectures. Individual fibers produced by this method approach the micrometer/submicrometer scale, while the overall suspended 3D fiber architecture can span over a centimeter in height. We demonstrate an application of suspended fiber architectures in 3D cell culture, utilizing patterned fiber topography to guide the assembly of suspended high-cellular-density structures. The solution-based fiber suspension patterning process we report offers a unique competence in patterning soft polymers, including extracellular matrix-like materials, in a high resolution and aspect ratio. The platform could thus offer new design and manufacturing capabilities of devices and functional products by incorporating functional fibrous elements.
Collapse
Affiliation(s)
- Elisabeth
L. Gill
- Department
of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, U.K.
- The
Nanoscience Centre, University of Cambridge, 11 JJ Thomson Avenue, Cambridge CB3 0FF, U.K.
| | - Samuel Willis
- Department
of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, U.K.
| | - Magda Gerigk
- Department
of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, U.K.
- The
Nanoscience Centre, University of Cambridge, 11 JJ Thomson Avenue, Cambridge CB3 0FF, U.K.
| | - Paul Cohen
- Department
of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, U.K.
| | - Duo Zhang
- Department
of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, U.K.
- The
Nanoscience Centre, University of Cambridge, 11 JJ Thomson Avenue, Cambridge CB3 0FF, U.K.
| | - Xia Li
- Department
of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, U.K.
| | - Yan Yan Shery Huang
- Department
of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, U.K.
- The
Nanoscience Centre, University of Cambridge, 11 JJ Thomson Avenue, Cambridge CB3 0FF, U.K.
| |
Collapse
|
23
|
Omidinia-Anarkoli A, Rimal R, Chandorkar Y, Gehlen DB, Rose JC, Rahimi K, Haraszti T, De Laporte L. Solvent-Induced Nanotopographies of Single Microfibers Regulate Cell Mechanotransduction. ACS APPLIED MATERIALS & INTERFACES 2019; 11:7671-7685. [PMID: 30694648 DOI: 10.1021/acsami.8b17955] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The extracellular matrix (ECM) is a dynamic three-dimensional (3D) fibrous network, surrounding all cells in vivo. Fiber manufacturing techniques are employed to mimic the ECM but still lack the knowledge and methodology to produce single fibers approximating cell size with different surface topographies to study cell-material interactions. Using solvent-assisted spinning (SAS), the potential to continuously produce single microscale fibers with unlimited length, precise diameter, and specific surface topographies was demonstrated. By applying solvents with different solubilities and volatilities, fibers with smooth, grooved, and porous surface morphologies are produced. Due to their hierarchical structures, the porous fibers are the most hydrophobic, followed by the grooved and the smooth fibers. The fiber diameter is increased by increasing the polymer concentration or decreasing the collector rotational speed. Moreover, SAS offers the advantage to control the interfiber distance and angle to fabricate multilayered 3D constructs. This report shows for the first time that the micro- and nanoscale topographies of single fibers mechanically regulate cell behavior. Fibroblasts, grown on fibers with grooved topographical features, stretch and elongate more compared to smooth and porous fibers, whereas both porous and grooved fibers induce nuclear translocation of yes-associated protein. The presented technique, therefore, provides a unique platform to study the interaction between cells and single ECM-like fibers in a precise and reproducible manner, which is of great importance for new material developments in the field of tissue engineering.
Collapse
Affiliation(s)
| | - Rahul Rimal
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - Yashoda Chandorkar
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - David B Gehlen
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - Jonas C Rose
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - Khosrow Rahimi
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - Tamás Haraszti
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - Laura De Laporte
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
- ITMC-Institute of Technical and Macromolecular Chemistry , RWTH Aachen University , Aachen 52074 , Germany
| |
Collapse
|
24
|
Dotivala AC, Puthuveetil KP, Tang C. Shear Force Fiber Spinning: Process Parameter and Polymer Solution Property Considerations. Polymers (Basel) 2019; 11:E294. [PMID: 30960278 PMCID: PMC6419197 DOI: 10.3390/polym11020294] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/25/2019] [Accepted: 01/31/2019] [Indexed: 11/18/2022] Open
Abstract
For application of polymer nanofibers (e.g., sensors, and scaffolds to study cell behavior) it is important to control the spatial orientation of the fibers. We compare the ability to align and pattern fibers using shear force fiber spinning, i.e. contacting a drop of polymer solution with a rotating collector to mechanically draw a fiber, with electrospinning onto a rotating drum. Using polystyrene as a model system, we observe that the fiber spacing using shear force fiber spinning was more uniform than electrospinning with the rotating drum with relative standard deviations of 18% and 39%, respectively. Importantly, the approaches are complementary as the fiber spacing achieved using electrospinning with the rotating drum was ~10 microns while fiber spacing achieved using shear force fiber spinning was ~250 microns. To expand to additional polymer systems, we use polymer entanglement and capillary number. Solution properties that favor large capillary numbers (>50) prevent droplet breakup to facilitate fiber formation. Draw-down ratio was useful for determining appropriate process conditions (flow rate, rotational speed of the collector) to achieve continuous formation of fibers. These rules of thumb for considering the polymer solution properties and process parameters are expected to expand use of this platform for creating hierarchical structures of multiple fiber layers for cell scaffolds and additional applications.
Collapse
Affiliation(s)
- Arzan C Dotivala
- Chemical and Life Science Engineering Department, Virginia Commonwealth University, Richmond, VA 23284-3028, USA.
| | - Kavya P Puthuveetil
- Chemical and Life Science Engineering Department, Virginia Commonwealth University, Richmond, VA 23284-3028, USA.
| | - Christina Tang
- Chemical and Life Science Engineering Department, Virginia Commonwealth University, Richmond, VA 23284-3028, USA.
| |
Collapse
|
25
|
Zhao Y, Zhu R, Song X, Ma Z, Chen S, Wu D, Liu F, Ouyang S, Zhang J, Ramakrishna S, Zhu X, He L. Assembly Pathway Selection of Designer Self-Assembling Peptide and Fabrication of Hierarchical Scaffolds for Neural Regeneration. ACS APPLIED MATERIALS & INTERFACES 2018; 10:26128-26141. [PMID: 30001104 DOI: 10.1021/acsami.8b10764] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The self-assembling peptide (SAP) RADA 16-I has been modified with various functional motifs to improve its performances in biomedical applications. Nevertheless, the assembly mechanisms of designer functional RADA 16-I SAPs (F-SAPs) have not been clearly illustrated. The main problem is the difficulty in preparing a completely molecular aqueous solution of F-SAP. In the current study, we demonstrated that different procedures for preparing the F-SAP solution could result in the formation of different conformations and consequently micro/macroscopic morphologies. F-SAP was molecularly dissolved in an appropriate solvent, such as hexafluoroisopropanol (HFIP), as evidenced by random coil conformation characterized by circular dichroism spectroscopy and morphologies under transmission electron microscopy. The monomers were induced into monolayers when the F-SAP solution in HFIP was adsorbed on mica as observed by atomic force microscopy. However, nanoscaled filaments containing β-sheets dominated in the F-SAP aqueous solution, in which case water acted as a poor solvent of F-SAP. Furthermore, the results of molecular dynamics simulation implicated that water facilitated F-SAP aggregation, whereas HFIP inhibited it. The β-sheet assemblies formed in water exhibited a high kinetic stability and did not disassemble rapidly after the addition of HFIP. Our study indicated that selecting the right assembly pathway of F-SAP required for targeted functions, for example, delivery of hydrophobic drugs in aqueous conditions, could be achieved by optimizing the preparation protocol in addition to molecular design. Moreover, hierarchical scaffolds mimicking the natural extracellular matrix could be fabricated by the direct electrospinning of F-SAP molecular solution in HFIP and biodegradable polymer for applications in neural regeneration by promoting neural differentiation, neurite outgrowth, and synapse formation.
Collapse
Affiliation(s)
| | | | - Xiyong Song
- National Laboratory of Biomacromolecules, Institute of Biophysics , Chinese Academy of Sciences , Beijing 100101 , China
| | - Zheng Ma
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology , Tianjin University of Science & Technology , Tianjin 300457 , P. R. China
| | | | | | - Fufeng Liu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology , Tianjin University of Science & Technology , Tianjin 300457 , P. R. China
| | - Songying Ouyang
- National Laboratory of Biomacromolecules, Institute of Biophysics , Chinese Academy of Sciences , Beijing 100101 , China
| | - Jianguo Zhang
- Center for Biological Imaging, Institute of Biophysics , Chinese Academy of Sciences , Beijing 100101 , China
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, Faculty of Engineering , National University of Singapore , Singapore 117576 , Singapore
| | - Xiaofeng Zhu
- Department of Chinese Medicine, The First Affiliated Hospital of Jinan University , Jinan University , Guangzhou 510632 , China
| | | |
Collapse
|
26
|
Stocco TD, Bassous NJ, Zhao S, Granato AEC, Webster TJ, Lobo AO. Nanofibrous scaffolds for biomedical applications. NANOSCALE 2018; 10:12228-12255. [PMID: 29947408 DOI: 10.1039/c8nr02002g] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Tissue engineering is an emergent and very interesting research field, providing potential solutions for a myriad of challenges in healthcare. Fibrous scaffolds specifically have shown promise as an effective tissue engineering method, as their high length-to-width ratio mimics that of extracellular matrix components, which in turn guides tissue formation, promotes cellular adhesion and improves mechanical properties. In this review paper, we discuss in detail both the importance of fibrous scaffolds for the promotion of tissue growth and the different methods to produce fibrous biomaterials to possess favorable and unique characteristics. Here, we focus on the pressing need to develop biomimetic structures that promote an ideal environment to encourage tissue formation. In addition, we discuss different biomedical applications in which fibrous scaffolds can be useful, identifying their importance, relevant aspects, and remaining significant challenges. In conclusion, we provide comments on the future direction of fibrous scaffolds and the best way to produce them, proposed in light of recent technological advances and the newest and most promising fabrication techniques.
Collapse
Affiliation(s)
- Thiago D Stocco
- Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | | | | | | | | | | |
Collapse
|
27
|
Multi-length scale bioprinting towards simulating microenvironmental cues. Biodes Manuf 2018; 1:77-88. [PMID: 30546920 PMCID: PMC6267274 DOI: 10.1007/s42242-018-0014-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 05/02/2018] [Indexed: 02/08/2023]
Abstract
It is envisaged that the creation of cellular environments at multiple length scales, that recapitulate in vivo bioactive and structural roles, may hold the key to creating functional, complex tissues in the laboratory. This review considers recent advances in biofabrication and bioprinting techniques across different length scales. Particular focus is placed on 3D printing of hydrogels and fabrication of biomaterial fibres that could extend the feature resolution and material functionality of soft tissue constructs. The outlook from this review discusses how one might create and simulate microenvironmental cues in vitro. A fabrication platform that integrates the competencies of different biofabrication technologies is proposed. Such a multi-process, multiscale fabrication strategy may ultimately translate engineering capability into an accessible life sciences toolkit, fulfilling its potential to deliver in vitro disease models and engineered tissue implants.
Collapse
|
28
|
Ye Z, Kim A, Mottley CY, Ellis MW, Wall C, Esker AR, Nain AS, Behkam B. Design of Nanofiber Coatings for Mitigation of Microbial Adhesion: Modeling and Application to Medical Catheters. ACS APPLIED MATERIALS & INTERFACES 2018; 10:15477-15486. [PMID: 29637776 DOI: 10.1021/acsami.8b02907] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Surface-associated microbial communities, known as biofilms, pose significant challenges in clinical and industrial settings. Micro-/nanoscale substratum surface features have been shown to disrupt firm adhesion of planktonic microbes to surfaces, thereby interfering with the earliest stage of biofilm formation. However, the role of geometry and size of surface features in microbial retention is not completely understood. In this study, we developed a biophysical model that describes the changes in the total free energy (adhesion energy and stretching energy) of an adherent Candida albicans cell on nanofiber-coated surfaces as a function of the geometry (i.e., diameter) and configuration (i.e., interfiber spacing) of the surface features (i.e., nanofibers). We then introduced a new nondimensional parameter, Π, to represent the ratio of cell rigidity to cell-substratum interfacial energy. We show that the total free energy is a strong function of topographical feature size at higher Π and lower spacing values. To confirm our biophysical model predictions, we performed 24 h dynamic retention assays and quantified cell attachment number density on surfaces coated with highly ordered polystyrene nanofibers. We show that the total free energy of a single adherent cell on a patterned surface is a key determinant of microbial retention on that surface. The cell attachment density trend closely correlates with the predictions based on the adherent single-cell total energy. The nanofiber coating design (1.2 μm diameter, 2 μm spacing) that maximized the total energy of the adherent cell resulted in the lowest microbial retention. We further demonstrate the utility of our biophysical model by showing close correlation between the computed single-cell total free energy and biofilm nucleation on fiber-coated urinary and central venous catheters of different materials. This biophysical model could offer a powerful new paradigm in ab initio design of patterned surfaces for controlled biofilm growth for medical applications and beyond.
Collapse
|
29
|
Design of Fiber Networks for Studying Metastatic Invasion. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1092:289-318. [DOI: 10.1007/978-3-319-95294-9_14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
30
|
Koons B, Sharma P, Ye Z, Mukherjee A, Lee MH, Wirtz D, Behkam B, Nain AS. Cancer Protrusions on a Tightrope: Nanofiber Curvature Contrast Quantitates Single Protrusion Dynamics. ACS NANO 2017; 11:12037-12048. [PMID: 29144730 DOI: 10.1021/acsnano.7b04567] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Cell migration is studied with the traditional focus on protrusion-driven cell body displacement, while less is known on morphodynamics of individual protrusions themselves, especially in fibrous environments mimicking extracellular matrix. Here, using suspended fibers, we report integrative and multiscale abilities to study protrusive behavior independent of cell body migration. By manipulating the diameter of fibers in orthogonal directions, we constrain cell migration along large diameter (2 μm) base fibers, while solely allowing cells to sense, initiate, and mature protrusions on orthogonally deposited high-curvature/low diameter (∼100, 200, and 600 nm) protrusive fibers and low-curvature (∼300 and 600 nm width) protrusive flat ribbons. In doing so, we report a set of morphodynamic metrics that precisely quantitate protrusion dynamics. Protrusion growth and maturation occur by rapid broadening at the base to achieve long lengths, a behavior dramatically influenced by curvature. While flat ribbons universally induce the formation of broad and long protrusions, we quantitatively protrutype protrusive behavior of two highly invasive cancer cell lines and find breast adenocarcinoma (MDA-MB-231) to exhibit sensitivity to fiber curvature higher than that of brain glioblastoma DBTRG-05MG. Furthermore, while actin and microtubules localize within protrusions of all sizes, we quantify protrusion size-driven localization of vimentin and, contrary to current understanding, report that vimentin is not required to form protrusions. Using multiple protrusive fibers, we quantify high coordination between hierarchical branches of individual protrusions and describe how the spatial configuration of multiple protrusions regulates cell migratory state. Finally, we describe protrusion-driven shedding and collection of cytoplasmic debris.
Collapse
Affiliation(s)
| | | | | | | | - Meng Horng Lee
- Engineering in Oncology Center, Johns Hopkins University , Baltimore, Maryland 21218, United States
| | - Denis Wirtz
- Engineering in Oncology Center, Johns Hopkins University , Baltimore, Maryland 21218, United States
| | | | | |
Collapse
|
31
|
Islam MS, Kao N, Bhattacharya SN, Gupta R, Bhattacharjee PK. Effect of low pressure alkaline delignification process on the production of nanocrystalline cellulose from rice husk. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.06.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
32
|
Thakkar S, Misra M. Electrospun polymeric nanofibers: New horizons in drug delivery. Eur J Pharm Sci 2017; 107:148-167. [DOI: 10.1016/j.ejps.2017.07.001] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 06/23/2017] [Accepted: 07/02/2017] [Indexed: 01/15/2023]
|
33
|
Sharma P, Ng C, Jana A, Padhi A, Szymanski P, Lee JSH, Behkam B, Nain AS. Aligned fibers direct collective cell migration to engineer closing and nonclosing wound gaps. Mol Biol Cell 2017; 28:2579-2588. [PMID: 28747440 PMCID: PMC5597329 DOI: 10.1091/mbc.e17-05-0305] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/14/2017] [Accepted: 07/20/2017] [Indexed: 01/06/2023] Open
Abstract
Cell emergence onto damaged or organized fibrous extracellular matrix (ECM) is a crucial precursor to collective cell migration in wound closure and cancer metastasis, respectively. However, there is a fundamental gap in our quantitative understanding of the role of local ECM size and arrangement in cell emergence-based migration and local gap closure. Here, using ECM-mimicking nanofibers bridging cell monolayers, we describe a method to recapitulate and quantitatively describe these in vivo behaviors over multispatial (single cell to cell sheets) and temporal (minutes to weeks) scales. On fiber arrays with large interfiber spacing, cells emerge (invade) either singularly by breaking cell-cell junctions analogous to release of a stretched rubber band (recoil), or in groups of few cells (chains), whereas on closely spaced fibers, multiple chains emerge collectively. Advancing cells on fibers form cell streams, which support suspended cell sheets (SCS) of various sizes and curvatures. SCS converge to form local gaps that close based on both the gap size and shape. We document that cell stream spacing of 375 µm and larger hinders SCS advancement, thus providing abilities to engineer closing and nonclosing gaps. Altogether we highlight the importance of studying cell-fiber interactions and matrix structural remodeling in fundamental and translational cell biology.
Collapse
Affiliation(s)
- Puja Sharma
- School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, VA 24061
| | - Colin Ng
- Mechanical Engineering Department, Virginia Tech, Blacksburg, VA 24061
| | - Aniket Jana
- Mechanical Engineering Department, Virginia Tech, Blacksburg, VA 24061
| | - Abinash Padhi
- Mechanical Engineering Department, Virginia Tech, Blacksburg, VA 24061
| | - Paige Szymanski
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Jerry S H Lee
- Center for Strategic Scientific Initiatives, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892.,Chemical and Biomolecular Engineering Department, Johns Hopkins University, Baltimore, MD 21218
| | - Bahareh Behkam
- School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, VA 24061.,Mechanical Engineering Department, Virginia Tech, Blacksburg, VA 24061
| | - Amrinder S Nain
- School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, VA 24061 .,Mechanical Engineering Department, Virginia Tech, Blacksburg, VA 24061
| |
Collapse
|
34
|
Sheets K, Wang J, Zhao W, Kapania R, Nain AS. Nanonet Force Microscopy for Measuring Cell Forces. Biophys J 2017; 111:197-207. [PMID: 27410747 DOI: 10.1016/j.bpj.2016.05.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 05/11/2016] [Accepted: 05/16/2016] [Indexed: 01/03/2023] Open
Abstract
The influence of physical forces exerted by or felt by cells on cell shape, migration, and cytoskeleton arrangement is now widely acknowledged and hypothesized to occur due to modulation of cellular inside-out forces in response to changes in the external fibrous environment (outside-in). Our previous work using the non-electrospinning Spinneret-based Tunable Engineered Parameters' suspended fibers has revealed that cells are able to sense and respond to changes in fiber curvature and structural stiffness as evidenced by alterations to focal adhesion cluster lengths. Here, we present the development and application of a suspended nanonet platform for measuring C2C12 mouse myoblast forces attached to fibers of three diameters (250, 400, and 800 nm) representing a wide range of structural stiffness (3-50 nN/μm). The nanonet force microscopy platform measures cell adhesion forces in response to symmetric and asymmetric external perturbation in single and cyclic modes. We find that contractility-based, inside-out forces are evenly distributed at the edges of the cell, and that forces are dependent on fiber structural stiffness. Additionally, external perturbation in symmetric and asymmetric modes biases cell-fiber failure location without affecting the outside-in forces of cell-fiber adhesion. We then extend the platform to measure forces of (1) cell-cell junctions, (2) single cells undergoing cyclic perturbation in the presence of drugs, and (3) cancerous single-cells transitioning from a blebbing to a pseudopodial morphology.
Collapse
Affiliation(s)
- Kevin Sheets
- Departments of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia
| | - Ji Wang
- Departments of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia
| | - Wei Zhao
- Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, Virginia
| | - Rakesh Kapania
- Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, Virginia
| | - Amrinder S Nain
- Departments of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia; Mechanical Engineering, Virginia Tech, Blacksburg, Virginia.
| |
Collapse
|
35
|
Hall A, Chan P, Sheets K, Apperson M, Delaughter C, Gleason TG, Phillippi JA, Nain A. Nanonet force microscopy for measuring forces in single smooth muscle cells of the human aorta. Mol Biol Cell 2017; 28:1894-1900. [PMID: 28450452 PMCID: PMC5541840 DOI: 10.1091/mbc.e17-01-0053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 04/06/2017] [Accepted: 04/18/2017] [Indexed: 11/11/2022] Open
Abstract
A number of innovative methods exist to measure cell-matrix adhesive forces, but they have yet to accurately describe and quantify the intricate interplay of a cell and its fibrous extracellular matrix (ECM). In cardiovascular pathologies, such as aortic aneurysm, new knowledge on the involvement of cell-matrix forces could lead to elucidation of disease mechanisms. To better understand this dynamics, we measured primary human aortic single smooth muscle cell (SMC) forces using nanonet force microscopy in both inside-out (I-O intrinsic contractility) and outside-in (O-I external perturbation) modes. For SMC populations, we measured the I-O and O-I forces to be 12.9 ± 1.0 and 57.9 ± 2.5 nN, respectively. Exposure of cells to oxidative stress conditions caused a force decrease of 57 and 48% in I-O and O-I modes, respectively, and an increase in migration rate by 2.5-fold. Finally, in O-I mode, we cyclically perturbed cells at constant strain of varying duration to simulate in vivo conditions of the cardiac cycle and found that I-O forces decrease with increasing duration and O-I forces decreased by half at shorter cycle times. Thus our findings highlight the need to study forces exerted and felt by cells simultaneously to comprehensively understand force modulation in cardiovascular disease.
Collapse
Affiliation(s)
- Alexander Hall
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061
| | - Patrick Chan
- Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA 15219
| | - Kevin Sheets
- Department of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, VA 24061
| | - Matthew Apperson
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061
| | | | - Thomas G Gleason
- Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA 15219.,Department of Bioengineering and McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219
| | - Julie A Phillippi
- Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA 15219 .,Department of Bioengineering and McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219
| | - Amrinder Nain
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061 .,Department of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, VA 24061
| |
Collapse
|
36
|
Aligned Nanofiber Topography Directs the Tenogenic Differentiation of Mesenchymal Stem Cells. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7010059] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
37
|
Stojanovska E, Canbay E, Pampal ES, Calisir MD, Agma O, Polat Y, Simsek R, Gundogdu NAS, Akgul Y, Kilic A. A review on non-electro nanofibre spinning techniques. RSC Adv 2016. [DOI: 10.1039/c6ra16986d] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
A large surface area, scalable porosity, and versatility have made nanofibres one of the most widely investigated morphologies among the nanomaterials.
Collapse
Affiliation(s)
| | - Emine Canbay
- TEMAG LABS
- Istanbul Technical University
- Istanbul
- Turkey
| | | | | | - Onur Agma
- TEMAG LABS
- Istanbul Technical University
- Istanbul
- Turkey
| | - Yusuf Polat
- TEMAG LABS
- Istanbul Technical University
- Istanbul
- Turkey
| | | | | | - Yasin Akgul
- TEMAG LABS
- Istanbul Technical University
- Istanbul
- Turkey
| | - Ali Kilic
- TEMAG LABS
- Istanbul Technical University
- Istanbul
- Turkey
| |
Collapse
|
38
|
Jeon H, Lee J, Lee H, Kim GH. Nanostructured surface of electrospun PCL/dECM fibres treated with oxygen plasma for tissue engineering. RSC Adv 2016. [DOI: 10.1039/c6ra03840a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanoscale patterns on the surface of PCL-based dECM were developed by a selective plasma treatment.
Collapse
Affiliation(s)
- HoJun Jeon
- Department of Biomechatronic Engineering
- College of Biotechnology and Bioengineering
- Sungkyunkwan University
- Suwon 440-746
- South Korea
| | - JaeYoon Lee
- Department of Biomechatronic Engineering
- College of Biotechnology and Bioengineering
- Sungkyunkwan University
- Suwon 440-746
- South Korea
| | - Hyeongjin Lee
- Department of Biomechatronic Engineering
- College of Biotechnology and Bioengineering
- Sungkyunkwan University
- Suwon 440-746
- South Korea
| | - Geun Hyung Kim
- Department of Biomechatronic Engineering
- College of Biotechnology and Bioengineering
- Sungkyunkwan University
- Suwon 440-746
- South Korea
| |
Collapse
|
39
|
Abstract
Much progress in understanding cell migration has been determined by using classic two-dimensional (2D) tissue culture platforms. However, increasingly, it is appreciated that certain properties of cell migration
in vivo are not represented by strictly 2D assays. There is much interest in creating relevant three-dimensional (3D) culture environments and engineered platforms to better represent features of the extracellular matrix and stromal microenvironment that are not captured in 2D platforms. Important to this goal is a solid understanding of the features of the extracellular matrix—composition, stiffness, topography, and alignment—in different tissues and disease states and the development of means to capture these features
Collapse
Affiliation(s)
- Patricia Keely
- Department of Cell and Regenerative Biology, UW Carbone Cancer Center, UW School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Amrinder Nain
- 2Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA, USA
| |
Collapse
|