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Porfiryeva NN, Zlotver I, Davidovich-Pinhas M, Sosnik A. Mucus-Mimicking Mucin-Based Hydrogels by Tandem Chemical and Physical Crosslinking. Macromol Biosci 2024; 24:e2400028. [PMID: 38511568 DOI: 10.1002/mabi.202400028] [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: 01/21/2024] [Revised: 03/05/2024] [Indexed: 03/22/2024]
Abstract
Mucosal tissues represent a major interface between the body and the external environment and are covered by a highly hydrated mucins gel called mucus. Mucus lubricates, protects and modulates the moisture levels of the tissue and is capitalized in transmucosal drug delivery. Pharmaceutical researchers often use freshly excised animal mucosal membranes to assess mucoadhesion and muco-penetration of pharmaceutical formulations which may struggle with limited accessibility, reproducibility, and ethical questions. Aiming to develop a platform for the rationale study of the interaction of drugs and delivery systems with mucosal tissues, in this work mucus-mimicking mucin-based hydrogels are synthesized by the tandem chemical and physical crosslinking of mucin aqueous solutions. Chemical crosslinking is achieved with glutaraldehyde (0.3% and 0.75% w/v), while physical crosslinking by one or two freeze-thawing cycles. Hydrogels after one freeze-thawing cycle show water content of 97.6-98.1%, density of 0.0529-0.0648 g cm⁻3, and storage and loss moduli of ≈40-60 and ≈3-5 Pa, respectively, that resemble the properties of native gastrointestinal mucus. The mechanical stability of the hydrogels increases over the number of freeze-thawing cycles. Overall results highlight the potential of this simple, reproducible, and scalable method to produce artificial mucus-mimicking hydrogels for different applications in pharmaceutical research.
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Affiliation(s)
- Natalia N Porfiryeva
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Ivan Zlotver
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Maya Davidovich-Pinhas
- Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Alejandro Sosnik
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
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Hou C, Zhang Y, Lv Z, Luan Y, Li J, Meng C, Liu K, Luo X, Chen L, Liu F. Macrophage exosomes modified by miR-365-2-5p promoted osteoblast osteogenic differentiation by targeting OLFML1. Regen Biomater 2024; 11:rbae018. [PMID: 38487712 PMCID: PMC10939467 DOI: 10.1093/rb/rbae018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/18/2024] [Accepted: 02/21/2024] [Indexed: 03/17/2024] Open
Abstract
In the bone immune microenvironment, immune cells can regulate osteoblasts through a complex communication network. Macrophages play a central role in mediating immune osteogenesis, exosomes derived from them have osteogenic regulation and can be used as carriers in bone tissue engineering. However, there are problems with exosomal therapy alone, such as poor targeting, and the content of loaded molecules cannot reach the therapeutic concentration. In this study, macrophage-derived exosomes modified with miR-365-2-5p were developed to accelerate bone healing. MC3T3-E1 cells were incubated with the culture supernatants of M0, M1 and M2 macrophages, and it was found that the culture medium of M2 macrophages had the most significant effects in contributing to osteogenesis. High-throughput sequencing identified that miR-365-2-5p was significantly expressed in exosomes derived from M2 macrophages. We incubated MC3T3-E1 with exosomes overexpressing or knocking down miR-365-2-5p to examine the biological function of exosome miR-365-2-5p on MC3T3-E1 differentiation. These findings suggested that miR-365-2-5p secreted by exosomes increased the osteogenesis of MC3T3-E1. Moreover, miR-365-2-5p had a direct influence over osteogenesis for MC3T3-E1. Sequencing analysis combined with dual luciferase detection indicated that miR-365-2-5p binded to the 3'-UTR of OLFML1. In summary, exosomes secreted by M2 macrophages targeted OLFML1 through miR-365-2-5p to facilitate osteogenesis.
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Affiliation(s)
- Caiyao Hou
- Department of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China
| | - Yujue Zhang
- Liaocheng People’s Hospital, Liaocheng Hospital Affiliated Shandong First Medical University, Liaocheng 252000, China
| | - Zhaoyong Lv
- Liaocheng People’s Hospital, Liaocheng Hospital Affiliated Shandong First Medical University, Liaocheng 252000, China
| | - Yurun Luan
- Liaocheng People’s Hospital, Liaocheng Hospital Affiliated Shandong First Medical University, Liaocheng 252000, China
| | - Jun Li
- Liaocheng People’s Hospital, Liaocheng Hospital Affiliated Shandong First Medical University, Liaocheng 252000, China
| | - Chunxiu Meng
- Liaocheng People’s Hospital, Liaocheng Hospital Affiliated Shandong First Medical University, Liaocheng 252000, China
| | - Kun Liu
- Liaocheng People’s Hospital, Liaocheng Hospital Affiliated Shandong First Medical University, Liaocheng 252000, China
| | - Xin Luo
- Liaocheng People’s Hospital, Liaocheng Hospital Affiliated Shandong First Medical University, Liaocheng 252000, China
| | - Liyu Chen
- The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250023, China
| | - Fengzhen Liu
- Department of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China
- Liaocheng People’s Hospital, Liaocheng Hospital Affiliated Shandong First Medical University, Liaocheng 252000, China
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Barik D, Shyamal S, Das K, Jena S, Dash M. Glycoprotein Injectable Hydrogels Promote Accelerated Bone Regeneration through Angiogenesis and Innervation. Adv Healthc Mater 2023; 12:e2301959. [PMID: 37712303 DOI: 10.1002/adhm.202301959] [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: 06/21/2023] [Revised: 08/27/2023] [Indexed: 09/16/2023]
Abstract
Glycoproteins are gaining prominence as multifunctional biomaterials. The study reports development of glycoprotein mucin as biomaterial promoting bone regeneration. Mucin 1 deletion has resulted in stiffer femoral bones with scarce presence of osteoblasts in trabecular linings and its role has been established in determining bone mass and mineralization. Limited information about its structure limits its processability, exploration as biomaterial, which is discussed in this study. The role of mucin in ECM (extracellular cellular matrix) formation validated by RNA sequencing analysis of human bone marrow derived mesenchymal stem cells is reported. The structure and stability of mucins is dependent on the presence of glycans in its structure. A thermosensitive hydrogel acquired from thermosensitive Poly (N-isopropyl acrylamide)-(PNIPAM) modified mucin and collagen is developed. The hydrogel demonstrates porous structure and mechanical strength. Newly formed bone tissue is observed at 8 weeks post-implantation in the hydrogel treated groups. The formation of blood vessels, nerves, and bone is observed with upregulation of angiopoietin (ANG), neurofilament heavy chain (NF-H), and osteoadherin (OSAD) or osteocalcin (OCN) respectively in rat calvarial defects. The outcome demonstrates that the thermosensitive injectable hydrogel accelerates repair and healing in calvarial bone defects making it a promising biodegradable biomaterial capable of regenerating bone by promoting angiogenesis and innervation.
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Affiliation(s)
- Debyashreeta Barik
- Therapeutics Biomaterials Team, Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT) University, Bhubaneswar, Odisha, 751024, India
| | - Sharmistha Shyamal
- RNA Biology Lab, Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
| | - Kapilash Das
- Therapeutics Biomaterials Team, Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
| | - Sarita Jena
- Animal House Facility, DBT-Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
| | - Mamoni Dash
- Therapeutics Biomaterials Team, Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha, 751023, India
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Yang S, Duncan GA. Synthetic mucus biomaterials for antimicrobial peptide delivery. J Biomed Mater Res A 2023; 111:1616-1626. [PMID: 37199137 PMCID: PMC10524183 DOI: 10.1002/jbm.a.37559] [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: 03/07/2023] [Revised: 04/25/2023] [Accepted: 05/08/2023] [Indexed: 05/19/2023]
Abstract
Despite the promise of antimicrobial peptides (AMPs) as treatments for antibiotic-resistant infections, their therapeutic efficacy is limited due to the rapid degradation and low bioavailability of AMPs. To address this, we have developed and characterized a synthetic mucus (SM) biomaterial capable of delivering LL37 AMPs and enhancing their therapeutic effect. LL37 is an AMP that exhibits a wide range of antimicrobial activity against bacteria, including Pseudomonas aeruginosa. LL37 loaded SM hydrogels demonstrated controlled release with 70%-95% of loaded LL37 over 8 h due to charge-mediated interactions between mucins and LL37 AMPs. Compared to treatment with LL37 alone where antimicrobial activity was reduced after 3 h, LL37-SM hydrogels inhibited P. aeruginosa (PAO1) growth over 12 h. LL37-SM hydrogel treatment reduced PAO1 viability over 6 h whereas a rebound in bacterial growth was observed when treated with LL37 only. These data demonstrate LL37-SM hydrogels enhance antimicrobial activity by preserving LL37 AMP activity and bioavailability. Overall, this work establishes SM biomaterials as a platform for enhanced AMP delivery for antimicrobial applications.
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Affiliation(s)
- Sydney Yang
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - Gregg A Duncan
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
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Guo W, Xu H, Liu D, Dong L, Liang T, Li B, Meng B, Chen S. 3D-Printed lattice-inspired composites for bone reconstruction. J Mater Chem B 2023; 11:7353-7363. [PMID: 37522170 DOI: 10.1039/d3tb01053h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Mechanical performance is crucial for biomedical applications of scaffolds. In this study, the stress distribution of six lattice-inspired structures was investigated using finite element simulations, and scaffolds with pre-designed structures were prepared using selective laser sintering (SLS) technology. The results showed that scaffolds with face-centered cubic (FCC) structures exhibited the highest compressive strength. Moreover, scaffolds composed of polylactic acid/anhydrous calcium hydrogen phosphate (PLA/DCPA) showed good mechanical properties and bioactivity. An in vitro study showed that these scaffolds promoted cell proliferation significantly and showed excellent osteogenic performance. Composite scaffolds with FCC structures are promising for bone tissue engineering.
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Affiliation(s)
- Wenmin Guo
- Mechanical and Energy Engineering College, Shaoyang University, Shaoyang 422000, Hunan, China
| | - Huanhuan Xu
- Mechanical and Energy Engineering College, Shaoyang University, Shaoyang 422000, Hunan, China
| | - Dachuan Liu
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou 215006, Jiangsu, China.
| | - Li Dong
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou 215006, Jiangsu, China.
| | - Ting Liang
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou 215006, Jiangsu, China.
| | - Bin Li
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou 215006, Jiangsu, China.
| | - Bin Meng
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou 215006, Jiangsu, China.
| | - Song Chen
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou 215006, Jiangsu, China.
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Yang S, Duncan G. Synthetic Mucus Biomaterials for Antimicrobial Peptide Delivery. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.07.531025. [PMID: 36945438 PMCID: PMC10028879 DOI: 10.1101/2023.03.07.531025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Despite the promise of antimicrobial peptides (AMPs) as treatments for antibiotic-resistant infections, their therapeutic efficacy is limited due to the rapid degradation and low bioavailability of AMPs. To address this, we have developed and characterized a synthetic mucus (SM) biomaterial capable of delivering AMPs and enhancing their therapeutic effect. LL37 loaded SM hydrogels demonstrated controlled release of LL37 over 8 hours as a result of charge-mediated interactions between mucins and LL37 AMPs. Compared to treatment with LL37 alone where antimicrobial activity was reduced after 3 hours, LL37-SM hydrogels inhibited Pseudomonas aeruginosa PAO1 growth over 12 hours. LL37-SM hydrogel treatment reduced PAO1 viability over 6 hours whereas a rebound in bacterial growth was observed when treated with LL37 only. These data demonstrate LL37-SM hydrogels enhance antimicrobial activity by preserving LL37 AMP activity and bioavailability. Overall, this work establishes SM biomaterials as a platform for enhanced AMP delivery for antimicrobial applications.
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Affiliation(s)
- Sydney Yang
- University of Maryland, Fischell Department of Bioengineering, College Park, MD
| | - Gregg Duncan
- University of Maryland, Fischell Department of Bioengineering, College Park, MD
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