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Asadi Tokmedash M, Kim C, Chavda AP, Li A, Robins J, Min J. Engineering multifunctional surface topography to regulate multiple biological responses. Biomaterials 2025; 319:123136. [PMID: 39978049 PMCID: PMC11893264 DOI: 10.1016/j.biomaterials.2025.123136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2024] [Revised: 01/04/2025] [Accepted: 01/23/2025] [Indexed: 02/22/2025]
Abstract
Surface topography or curvature plays a crucial role in regulating cell behavior, influencing processes such as adhesion, proliferation, and gene expression. Recent advancements in nano- and micro-fabrication techniques have enabled the development of biomimetic systems that mimic native extracellular matrix (ECM) structures, providing new insights into cell-adhesion mechanisms, mechanotransduction, and cell-environment interactions. This review examines the diverse applications of engineered topographies across multiple domains, including antibacterial surfaces, immunomodulatory devices, tissue engineering scaffolds, and cancer therapies. It highlights how nanoscale features like nanopillars and nanospikes exhibit bactericidal properties, while many microscale patterns can direct stem cell differentiation and modulate immune cell responses. Furthermore, we discuss the interdisciplinary use of topography for combined applications, such as the simultaneous regulation of immune and tissue cells in 2D and 3D environments. Despite significant advances, key knowledge gaps remain, particularly regarding the effects of topographical cues on multicellular interactions and dynamic 3D contexts. This review summarizes current fabrication methods, explores specific and interdisciplinary applications, and proposes future research directions to enhance the design and utility of topographically patterned biomaterials in clinical and experimental settings.
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Affiliation(s)
| | - Changheon Kim
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Ajay P Chavda
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Adrian Li
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jacob Robins
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jouha Min
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA; Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI, 48109, USA; Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, USA; Weil Institute for Critical Care Research and Innovation, University of Michigan, Ann Arbor, MI, 48109, USA.
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Seifalian A, Digesu A, Khullar V. A Novel Graphene-Based Nanomaterial for the Development of a Pelvic Implant to Treat Pelvic Organ Prolapse. J Funct Biomater 2024; 15:351. [PMID: 39590554 PMCID: PMC11595893 DOI: 10.3390/jfb15110351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2024] [Revised: 10/30/2024] [Accepted: 11/18/2024] [Indexed: 11/28/2024] Open
Abstract
Graphene is the wonder material of the 21st century, promising cutting-edge advancements in material science with significant applications across all industries. This study investigates the use of a graphene-based nanomaterials (GBNs) ans trade-registered Hastalex®, as novel materials for surgical implants aimed at treating pelvic organ prolapse (POP). This study investigates the mechanical properties and physicochemical characteristics of the material, mainly focusing on its potential to address the limitations of existing polypropylene (PP) implants, which has been associated with numerous complications and banned across multiple countries. Attenuated total reflectance Fourier transform infrared (ATR-FTIR) confirmed the bonding between functionalised graphene oxide (FGO) and the base polymer chain. Hastalex exhibited excellent mechanical properties with 58 N/mm2 maximum tensile strength at break and 701% elongation at break, whilst maintaining its shape with no plastic deformation. These results were comparable to that of sheep pelvic muscular tissue. Hastalex demonstrated its hydrophilic properties from contact angle measurements. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) showed a uniform plane with surface nanotopography, promoting cell-to-material interaction. The results confirmed the suitability of Hastalex in the development of a new pelvic membrane to treat POP.
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Fan D, Liu X, Chen H. Endothelium-Mimicking Materials: A "Rising Star" for Antithrombosis. ACS APPLIED MATERIALS & INTERFACES 2024; 16:53343-53371. [PMID: 39344055 DOI: 10.1021/acsami.4c12117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/01/2024]
Abstract
The advancement of antithrombotic materials has significantly mitigated the thrombosis issue in clinical applications involving various medical implants. Extensive research has been dedicated over the past few decades to developing blood-contacting materials with complete resistance to thrombosis. However, despite these advancements, the risk of thrombosis and other complications persists when these materials are implanted in the human body. Consequently, the modification and enhancement of antithrombotic materials remain pivotal in 21st-century hemocompatibility studies. Previous research indicates that the healthy endothelial cells (ECs) layer is uniquely compatible with blood. Inspired by bionics, scientists have initiated the development of materials that emulate the hemocompatible properties of ECs by replicating their diverse antithrombotic mechanisms. This review elucidates the antithrombotic mechanisms of ECs and examines the endothelium-mimicking materials developed through single, dual-functional and multifunctional strategies, focusing on nitric oxide release, fibrinolytic function, glycosaminoglycan modification, and surface topography modification. These materials have demonstrated outstanding antithrombotic performance. Finally, the review outlines potential future research directions in this dynamic field, aiming to advance the development of antithrombotic materials.
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Affiliation(s)
- Duanqi Fan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Xiaoli Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Hong Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
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Chivukula L, LaJeunesse D. Transcriptional Response of Candida albicans to Nanostructured Surfaces Provides Insight into Cellular Rupture and Antifungal Drug Sensitization. ACS Biomater Sci Eng 2023; 9:6724-6733. [PMID: 37977153 PMCID: PMC10716851 DOI: 10.1021/acsbiomaterials.3c00938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/19/2023]
Abstract
The rise in resistance levels against antifungal drugs has necessitated the development of strategies to combat fungal infections. Nanoscale antimicrobial surfaces, found on the cuticles of insects, have recently emerged as intriguing alternative antifungal strategies that function passively via contact and induced cell rupture. Nanostructured surfaces (NSS) offer a potentially transformative antimicrobial approach to reducing microbial biofilm formation. We examined the transcriptional response of Candida albicans, an opportunistic pathogen that is also a commensal dimorphic fungus, to the NSS found in the wings of Neotibicen spp. cicada and found characteristic changes in the expression of C. albicans genes associated with metabolism, biofilm formation, ergosterol biosynthesis, and DNA damage response after 2 h of exposure to the NSS. Further validation revealed that these transcriptional changes, particularly in the ergosterol biosynthesis pathway, sensitize C. albicans to major classes of antifungal drugs. These findings provide insights into NSS as antimicrobial surfaces and as a means of controlling biofilm formation.
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Affiliation(s)
- Lakshmi
Gayitri Chivukula
- Department of Nanoscience, Joint School
of Nanoscience and Nanoengineering, University
of North Carolina Greensboro, 2907 East Lee Street, Greensboro, North Carolina 27455, United States
| | - Dennis LaJeunesse
- Department of Nanoscience, Joint School
of Nanoscience and Nanoengineering, University
of North Carolina Greensboro, 2907 East Lee Street, Greensboro, North Carolina 27455, United States
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