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He Y, Cen Y, Tian M. Immunomodulatory hydrogels for skin wound healing: cellular targets and design strategy. J Mater Chem B 2024; 12:2435-2458. [PMID: 38284157 DOI: 10.1039/d3tb02626d] [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: 01/30/2024]
Abstract
Skin wounds significantly impact the global health care system and represent a significant burden on the economy and society due to their complicated dynamic healing processes, wherein a series of immune events are required to coordinate normal and sequential healing phases, involving multiple immunoregulatory cells such as neutrophils, macrophages, keratinocytes, and fibroblasts, since dysfunction of these cells may impede skin wound healing presenting persisting inflammation, impaired vascularization, and excessive collagen deposition. Therefore, cellular target-based immunomodulation is promising to promote wound healing as cells are the smallest unit of life in immune response. Recently, immunomodulatory hydrogels have become an attractive avenue to promote skin wound healing. However, a detailed and comprehensive review of cellular targets and related hydrogel design strategies remains lacking. In this review, the roles of the main immunoregulatory cells participating in skin wound healing are first discussed, and then we highlight the cellular targets and state-of-the-art design strategies for immunomodulatory hydrogels based on immunoregulatory cells that cover defect, infected, diabetic, burn and tumor wounds and related scar healing. Finally, we discuss the barriers that need to be addressed and future prospects to boost the development and prosperity of immunomodulatory hydrogels.
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Affiliation(s)
- Yinhai He
- Department of Plastic and Burn Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ying Cen
- Department of Plastic and Burn Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Meng Tian
- Department of Neurosurgery and Neurosurgery Research Laboratory, West China Hospital, Sichuan University, Chengdu, 610041, China.
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2
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Jadach B, Mielcarek Z, Osmałek T. Use of Collagen in Cosmetic Products. Curr Issues Mol Biol 2024; 46:2043-2070. [PMID: 38534748 DOI: 10.3390/cimb46030132] [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: 02/05/2024] [Revised: 02/28/2024] [Accepted: 03/01/2024] [Indexed: 03/28/2024] Open
Abstract
Collagen (CLG) belongs to the family of fibrillar proteins and is composed of left-handed α polypeptide chains, which, twisting around themselves and their axis, form a right-handed superhelix. In the chemical structure, it contains mainly proline, hydroxyproline, glycine, and hydroxylysine. It occurs naturally in the dermis in the form of fibers that provide the skin with proper density and elasticity. The review aimed to present the types of collagen protein, factors affecting its structure and its unusual role in the functioning of the human body. Also, an overview of cosmetic products containing collagen or its derivatives, the characteristics of the formulas of these products, and the effects of their use were presented. Throughout the market, there are many cosmetic and cosmeceutical products containing CLG. They are in the form of fillers administered as injections, belonging to the group of the oldest tissue fillers; products administered orally and for topical use, such as creams, gels, serums, or cosmetic masks. Analyzed studies have shown that the use of products with collagen or its peptides improves the general condition of the skin and delays the aging process by reducing the depth of wrinkles, improving hydration (in the case of oral preparations), reducing transepithelial water loss (TEWL), as well as improving skin density and elasticity. In addition, oral application of bioactive CLG peptides has shown a positive effect on the nails, reducing the frequency of their breakage.
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Affiliation(s)
- Barbara Jadach
- Division of Industrial Pharmacy, Chair and Department of Pharmaceutical Technology, Faculty of Pharmacy, Poznan University of Medical Sciences, 3 Rokietnicka, 60-806 Poznan, Poland
| | - Zofia Mielcarek
- Chair and Department of Pharmaceutical Technology, Faculty of Pharmacy, Poznan University of Medical Sciences, 3 Rokietnicka, 60-806 Poznan, Poland
| | - Tomasz Osmałek
- Chair and Department of Pharmaceutical Technology, Faculty of Pharmacy, Poznan University of Medical Sciences, 3 Rokietnicka, 60-806 Poznan, Poland
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3
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Tettelbach W, Forsyth A. Current practices using cellular, acelluar and matrix-like products (CAMPs). BRITISH JOURNAL OF NURSING (MARK ALLEN PUBLISHING) 2024; 33:S4-S8. [PMID: 38386535 DOI: 10.12968/bjon.2024.33.4.s4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Affiliation(s)
- William Tettelbach
- Chief Medical Officer, RestorixHealth, Metairie, Louisiana, USA; Adjunct Professor, College of Podiatric Medicine, Western University of Health Sciences, Pomona, California, USA; Adjunct Assistant Professor, Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina, USA; President, American Professional Wound Care Association (APWCA)
| | - Allyn Forsyth
- Director, Communications and Publications, MiMedx Group Inc, Marietta, Georgia, USA; Department of Biology, San Diego State University, San Diego, California, USA
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Wareham LK, Baratta RO, Del Buono BJ, Schlumpf E, Calkins DJ. Collagen in the central nervous system: contributions to neurodegeneration and promise as a therapeutic target. Mol Neurodegener 2024; 19:11. [PMID: 38273335 PMCID: PMC10809576 DOI: 10.1186/s13024-024-00704-0] [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: 09/27/2023] [Accepted: 01/10/2024] [Indexed: 01/27/2024] Open
Abstract
The extracellular matrix is a richly bioactive composition of substrates that provides biophysical stability, facilitates intercellular signaling, and both reflects and governs the physiological status of the local microenvironment. The matrix in the central nervous system (CNS) is far from simply an inert scaffold for mechanical support, instead conducting an active role in homeostasis and providing broad capacity for adaptation and remodeling in response to stress that otherwise would challenge equilibrium between neuronal, glial, and vascular elements. A major constituent is collagen, whose characteristic triple helical structure renders mechanical and biochemical stability to enable bidirectional crosstalk between matrix and resident cells. Multiple members of the collagen superfamily are critical to neuronal maturation and circuit formation, axon guidance, and synaptogenesis in the brain. In mature tissue, collagen interacts with other fibrous proteins and glycoproteins to sustain a three-dimensional medium through which complex networks of cells can communicate. While critical for matrix scaffolding, collagen in the CNS is also highly dynamic, with multiple binding sites for partnering matrix proteins, cell-surface receptors, and other ligands. These interactions are emerging as critical mediators of CNS disease and injury, particularly regarding changes in matrix stiffness, astrocyte recruitment and reactivity, and pro-inflammatory signaling in local microenvironments. Changes in the structure and/or deposition of collagen impact cellular signaling and tissue biomechanics in the brain, which in turn can alter cellular responses including antigenicity, angiogenesis, gliosis, and recruitment of immune-related cells. These factors, each involving matrix collagen, contribute to the limited capacity for regeneration of CNS tissue. Emerging therapeutics that attempt to rebuild the matrix using peptide fragments, including collagen-enriched scaffolds and mimetics, hold great potential to promote neural repair and regeneration. Recent evidence from our group and others indicates that repairing protease-degraded collagen helices with mimetic peptides helps restore CNS tissue and promote neuronal survival in a broad spectrum of degenerative conditions. Restoration likely involves bolstering matrix stiffness to reduce the potential for astrocyte reactivity and local inflammation as well as repairing inhibitory binding sites for immune-signaling ligands. Facilitating repair rather than endogenous replacement of collagen degraded by disease or injury may represent the next frontier in developing therapies based on protection, repair, and regeneration of neurons in the central nervous system.
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Affiliation(s)
- Lauren K Wareham
- Department of Ophthalmology and Visual Sciences, Vanderbilt Eye Institute , Vanderbilt University Medical Center, 1161 21st Avenue S, 37232, Nashville, TN, USA
| | - Robert O Baratta
- Stuart Therapeutics, Inc., 411 SE Osceola St, 34994, Stuart, FL, USA
| | - Brian J Del Buono
- Stuart Therapeutics, Inc., 411 SE Osceola St, 34994, Stuart, FL, USA
| | - Eric Schlumpf
- Stuart Therapeutics, Inc., 411 SE Osceola St, 34994, Stuart, FL, USA
| | - David J Calkins
- Department of Ophthalmology and Visual Sciences, Vanderbilt Eye Institute , Vanderbilt University Medical Center, 1161 21st Avenue S, 37232, Nashville, TN, USA
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Reis-Havlat M, Alania Y, Zhou B, Jing SX, McAlpine JB, Chen SN, Pauli GF, Bedran-Russo AK. Modulatory role of terminal monomeric flavan-3-ol units in the viscoelasticity of dentin. J Biomed Mater Res B Appl Biomater 2024; 112:e35333. [PMID: 37792302 PMCID: PMC10842555 DOI: 10.1002/jbm.b.35333] [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: 11/11/2022] [Revised: 07/27/2023] [Accepted: 09/07/2023] [Indexed: 10/05/2023]
Abstract
Flavan-3-ol monomers are the building blocks of proanthocyanidins (PACs), natural compounds from plants shown to mediate specific biologic activities on dentin. While the stereochemistry of the terminal flavan-3-ols, catechin (C) versus epicatechin (EC), impacts the biomechanical properties of the dentin matrix treated with oligomeric PACs, structure-activity relationships driving this bioactivity remain elusive. To gain insights into the modulatory role of the terminal monomers, two highly congruent trimeric PACs from Pinus massoniana only differing in the stereochemistry of the terminal unit (Trimer-C vs. Trimer-EC) were prepared to evaluate their chemical characteristics as well as their effects on the viscoelasticity and biostability of biomodified dentin matrices via infrared spectroscopy and multi-scale dynamic mechanical analyses. The subtle alteration of C versus EC as terminal monomers lead to distinct immediate PAC-trimer biomodulation of the dentin matrix. Nano- and micro-dynamic mechanical analyses revealed that Trimer-EC increased the complex moduli (0.51 GPa) of dentin matrix more strongly than Trimer-C (0.26 GPa) at the nanoscale length (p < 0.001), whereas the reverse was found at the microscale length (p < .001). The damping capacity (tan δ) of dentin matrix decreased by 70% after PAC treatment at the nano-length scale, while increased values were found at the micro-length scale (~0.24) compared to the control (0.18 ; p < .001). An increase in amide band intensities and a decrease of complex moduli was observed after storage in simulated body fluid for both Trimer-C and Trimer-EC modified dentin. The stereochemical configuration of the terminal monomeric units, C and EC, did not impact the chemo-mechanical stability of dentin matrix.
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Affiliation(s)
- Mariana Reis-Havlat
- Department of General Dental Sciences, School of Dentistry, Marquette University, Milwaukee, WI, 53233, United States’
| | - Yvette Alania
- Department of General Dental Sciences, School of Dentistry, Marquette University, Milwaukee, WI, 53233, United States’
| | - Bin Zhou
- Pharmacognosy Institute and Department of Pharmaceutical Sciences (PSCI), College of Pharmacy, University of Illinois at Chicago, Chicago, IL, 60612, United States
| | - Shu-Xi Jing
- Pharmacognosy Institute and Department of Pharmaceutical Sciences (PSCI), College of Pharmacy, University of Illinois at Chicago, Chicago, IL, 60612, United States
| | - James B. McAlpine
- Pharmacognosy Institute and Department of Pharmaceutical Sciences (PSCI), College of Pharmacy, University of Illinois at Chicago, Chicago, IL, 60612, United States
| | - Shao-Nong Chen
- Pharmacognosy Institute and Department of Pharmaceutical Sciences (PSCI), College of Pharmacy, University of Illinois at Chicago, Chicago, IL, 60612, United States
| | - Guido F. Pauli
- Pharmacognosy Institute and Department of Pharmaceutical Sciences (PSCI), College of Pharmacy, University of Illinois at Chicago, Chicago, IL, 60612, United States
| | - Ana K. Bedran-Russo
- Department of General Dental Sciences, School of Dentistry, Marquette University, Milwaukee, WI, 53233, United States’
- Department of Oral Biology, College of Dentistry, University of Illinois at Chicago, Chicago, Illinois 60612, United States
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6
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Eaton V, Braaten M, Schissel M, Wallace M. Assessing the Safety and Efficacy of Tranexamic Acid Usage in Osteogenesis Imperfecta Patients. J Pediatr Orthop 2024; 44:e73-e78. [PMID: 37750572 PMCID: PMC10702696 DOI: 10.1097/bpo.0000000000002524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
BACKGROUND Osteogenesis Imperfecta (OI) usually causes an increased fracture burden and bone deformity, with subsequent operations common. In addition to skeletal manifestations, there is a potential increase in bleeding susceptibility due to the increased frequency of orthopedic procedures, warranting investigation into methods to mitigate this risk. This study aims to evaluate the safety and efficacy of tranexamic acid (TXA) usage to reduce intraoperative blood loss in children with OI. We want to assess the potential benefits, risks, and complications involved with TXA use in this patient population. METHODS TXA-receiving patients (cases) were matched 1:1 with non-TXA-receiving controls on the following criteria: age within 2 years, bone category, and OI Type. Descriptive statistics were used to summarize the data. Fisher Exact Test was performed to compare transfusion status between groups. A Wilcoxon Rank Sum test was performed to assess differences between the groups in days of stay, length of surgery, and estimated blood loss (EBL). All analyses were conducted using SAS version 9.4. P <0.05 was considered statistically significant. RESULTS Our TXA-receiving population of 30 patients consisted of 11 females and 19 males. One patient was OI type I, 13 were OI type III, 14 were OI type IV, and 2 were categorized as Other (not Type I through Type IV). We found a significant difference in transfusion status ( P =0.02), with zero TXA patients requiring a transfusion compared with 20% of the control cases. There is also a significant difference in median EBL ( P =0.0004) between groups, with TXA patients having decreased intraoperative EBL (20 vs. 62.5 mL). There was also a difference in median days of postoperative stay between TXA-receiving and non-TXA-receiving patients ( P =0.001; 2.6 vs. 4 d). CONCLUSIONS Our study concluded that TXA use in OI patients is associated with lower perioperative transfusions and intraoperative blood loss rates. These results support the standard usage of TXA in these patients to reduce intraoperative blood loss. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
| | | | | | - Maegen Wallace
- University of Nebraska Medical Center
- Children’s Hospital & Medical Center, Omaha, NE
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Cao X, Lin X, Li N, Zhao X, Zhou M, Zhao Y. Animal tissue-derived biomaterials for promoting wound healing. MATERIALS HORIZONS 2023; 10:3237-3256. [PMID: 37278612 DOI: 10.1039/d3mh00411b] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The skin serves as the primary barrier between the human body and external environment, and is therefore susceptible to damage from various factors. In response to this challenge, animal tissue-derived biomaterials have emerged as promising candidates for wound healing due to their abundant sources, low side-effect profiles, exceptional bioactivity, biocompatibility, and unique extracellular matrix (ECM) mimicry. The evolution of modern engineering technology and therapies has allowed these animal tissue-derived biomaterials to be transformed into various forms and modified to possess the necessary properties for wound repair. This review provides an overview of the wound healing process and the factors that influence it. We then describe the extraction methods, important properties, and recent practical applications of various animal tissue-derived biomaterials. Our focus then shifts to the critical properties of these biomaterials in skin wound healing and their latest research developments. Finally, we critically examine the limitations and future prospects of biomaterials generated from animal tissues in this field.
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Affiliation(s)
- Xinyue Cao
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
| | - Xiang Lin
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
| | - Ning Li
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
| | - Xiaozhi Zhao
- Department of Andrology, Nanjing Drum Tower Hospital, Medical School, Nanjing University, Nanjing 210008, China.
| | - Min Zhou
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
| | - Yuanjin Zhao
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
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Sun X, Quan S, Wang B, Wang Q, Li W, Xiao J. Peptide-triggered self-assembly of collagen mimetic peptides into nanospheres by electrostatic interaction and π-π stacking. J Mater Chem B 2023; 11:4677-4683. [PMID: 37161598 DOI: 10.1039/d3tb00088e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Collagen is the most abundant protein in various connective tissues, providing mechanical integrity as well as regulating cellular activities. Self-assembled peptides have been extensively explored to develop collagen mimetic materials, due to their attractive features such as easy synthesis, selective sequences and low immunogenicity. Metal ion-triggered self-assembly of collagen mimetic peptides has recently received increasing interests, since the addition of external stimuli offers programmable control of the self-assembly process. We have for the first time reported a peptide-stimulated self-assembly of collagen mimetic peptides into nanospheres by electrostatic interaction and π-π stacking. We have accidentally discovered that FAM-modified positively-charged triple helical peptide FAM-PRG was highly soluble, while the addition of a single-stranded negatively-charged peptide EOG-10 efficiently drove its self-assembly into well-ordered spherical nanomaterials. Peptide EOG-10 has been shown to mediate similar self-assembly of TPE-modified triple-helical peptide TPE-PRG into luminescent exquisite nanospheres, consistently demonstrating the robustness of this peptide-triggered strategy. Fluorescence monitoring of the interaction of EOG-10 and TPE-PRG at different ratios indicated that EOG-10 specifically binds to TPE-PRG to form a 3 : 1 complex. High salt concentration was shown to inhibit the self-assembly of TPE-PRG with EOG-10, suggesting that their self-assembly was controlled by electrostatic interaction. The self-assembly of TPE-PRG with EOG-10 has been further revealed to require the exact lengths of both peptides as well as complementary sequences without mutations, indicating a pairwise "side-by-side" binding mode. Notably, the identity of the N-terminal residues of X-PRG has been found to play a determinant role in the self-assembly, while non-aromatic residues lost the self-assembling capability, suggesting that π-π stacking and electrostatic interactions collectively modulate the self-assembly of X-PRG and EOG-10. To conclude, we have developed a highly biocompatible and programmably controlled peptide-triggered self-assembly approach to create novel collagen mimetic nanomaterials, which may have great potential in advanced functional materials.
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Affiliation(s)
- Xiuxia Sun
- School of Pharmacy, Lanzhou University, Lanzhou, Gansu, 730000, China
- Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, China
| | - Siqi Quan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
- Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, China
| | - Bo Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
- Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, China
| | - Qi Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
- Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, China
| | - Wenhua Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
- Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, China
| | - Jianxi Xiao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
- Gansu Engineering Research Center of Medical Collagen, Lanzhou 730000, China
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9
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Carrilho MR, Scaffa PMC, Dionizio A, Ventura TMO, Buzalaf MAR, Vidal CMP. Differential analysis of the dentin soluble proteomic. J Dent 2023; 131:104454. [PMID: 36781100 DOI: 10.1016/j.jdent.2023.104454] [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: 11/28/2022] [Revised: 02/04/2023] [Accepted: 02/09/2023] [Indexed: 02/13/2023] Open
Abstract
OBJECTIVES To perform a differential analysis of the dentin soluble proteomic and assess the effects of tissue health state and protocol for protein extraction. We hypothesized the dentin soluble proteomic varies according to the tissue physiopathological state (intact vs. caries-affected) and protocol used to extract its proteins. METHODS Dentin from freshly extracted non-carious and carious teeth were randomly assigned for protein extraction using either guanidine-HCl/ethylenediaminetetraacetic acid (EDTA) or acetic acid. Protein extracts from intact and caries-affected dentin were processed and digested with trypsin for shotgun label-free proteomic analysis (nLC-ESI-MS/MS). Peptides identification was performed on a nanoACQUITY UPLC-Xevo Q-Tof MS system. Peptides identified with scores of confidence greater than 95% were included in the quantitative statistical analysis embedded in the PLGS software. Differences between experimental conditions were calculated using Student test-t with significance pre-set at α=0.05. RESULTS A total of 158 human proteins were identified. Approximately one-sixth of proteins (24/158) were present in at least two different extracts. Conversely, the greatest number of proteins (134/158) was identified uniquely in only one of the extracts. Overall, a larger number of soluble proteins was retrieved from caries-affected than intact dentin (86/158). Likewise, a greater number of proteins was extracted by the guanidine-HCl/EDTA (106/158) in comparison to acetic acid protocol. Several proteins detected in dentin extracts, mainly those from caries-affected teeth, are biological and/or metabolically involved with tissue turnover/remodeling. CONCLUSION The identity/abundance of soluble proteins retrieved from and remained in dentin noticeably depend on this tissue physiopathological state and protocol used to remove its minerals. CLINICAL SIGNIFICANCE The present findings brought new insight into the proteomic phenotype of human dentin and may provide targets for the development of novel caries disease-prevention therapies.
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Affiliation(s)
| | - Polliana M C Scaffa
- Department of Biological Sciences/Bauru School of Dentistry/University of São Paulo, SP, Brazil
| | - Aline Dionizio
- Department of Biological Sciences/Bauru School of Dentistry/University of São Paulo, SP, Brazil
| | - Talita M O Ventura
- Department of Biological Sciences/Bauru School of Dentistry/University of São Paulo, SP, Brazil
| | - Marilia A R Buzalaf
- Department of Biological Sciences/Bauru School of Dentistry/University of São Paulo, SP, Brazil
| | - Cristina M P Vidal
- Department of Operative Dentistry/College of Dentistry/University of Iowa, IA, USA
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10
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Cosma DV, Tudoran C, Coroș M, Socaci C, Urda A, Turza A, Roșu MC, Barbu-Tudoran L, Stanculescu I. Modification of Cotton and Leather Surfaces Using Cold Atmospheric Pressure Plasma and TiO 2-SiO 2-Reduced Graphene Oxide Nanopowders. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1397. [PMID: 36837027 PMCID: PMC9967795 DOI: 10.3390/ma16041397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/01/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Surface modification of textile fabrics and leathers is very versatile and allows the products quality improvement. In this work, cotton and leather substrates were pre-treated with cold atmospheric pressure plasma (CAPP) and further coated with TiO2-SiO2-reduced graphene oxide composites in dispersion form. By using a Taguchi scheme, this research evaluated the effect of three significant parameters, i.e., the pre-treatment with CAPP, organic dispersion coating and TiO2-SiO2-reduced graphene oxide (TS/GR) composites, that may affect the morpho-structural properties and photocatalytic activity of modified cotton and leather surfaces. The characteristics of cotton/leather surfaces were evaluated by morphological, structural, optical and self-cleaning ability using scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDX), X-ray powder diffraction (XRD), attenuated total reflection-Fourier Transform Infrared spectroscopy (ATR-FTIR) and UV-Vis spectroscopy. The self-cleaning performance of the obtained cotton and leather samples was evaluated by photocatalytic discoloration of berry juice surface stains under UV light irradiation for 12 h. The successfulness of coating formulations was proven by the SEM analysis and UV-Vis spectroscopy. The XRD patterns and ATR-FTIR spectra revealed the cellulose and collagen structures as dominant components of cotton and leather substrates. The CAPP treatment did not damage the cotton and leather structures. The photocatalytic results highlighted the potential of TiO2-SiO2-reduced graphene oxide composites in organic dispersion media, as coating formulations, for further use in the fabrication of innovative self-cleaning photocatalytic cotton and leather products.
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Affiliation(s)
- Dragoș-Viorel Cosma
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Cristian Tudoran
- Cetatea, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Maria Coroș
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Crina Socaci
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Alexandra Urda
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Alexandru Turza
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Marcela-Corina Roșu
- Department of Mass Spectrometry, Chromatography and Applied Physics, National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Lucian Barbu-Tudoran
- Electron Microscopy Center “Prof. C. Crăciun”, Faculty of Biology & Geology, “Babeș-Bolyai” University, 5-7 Clinicilor Street, 400006 Cluj-Napoca, Romania
- Electron Microscopy Integrated Laboratory, National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Ioana Stanculescu
- Analytical Chemistry and Physical Chemistry Department, Faculty of Chemistry, University of Bucharest, Regina Elisabeta, no. 4-12, 030018 Bucharest, Romania
- Horia Hulubei National Institute of Research and Development for Physics and Nuclear Engineering, 30 Reactorului Str., 077125 Magurele, Romania
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11
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Tavakol M, Vaughan TJ. A coarse-grained molecular dynamics investigation of the role of mineral arrangement on the mechanical properties of mineralized collagen fibrils. J R Soc Interface 2023; 20:20220803. [PMID: 36695019 PMCID: PMC9874270 DOI: 10.1098/rsif.2022.0803] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 12/16/2022] [Indexed: 01/26/2023] Open
Abstract
Mineralized collagen fibrils (MCFs) comprise collagen molecules and hydroxyapatite (HAp) crystals and are considered universal building blocks of bone tissue, across different bone types and species. In this study, we developed a coarse-grained molecular dynamics (CGMD) framework to investigate the role of mineral arrangement on the load-deformation behaviour of MCFs. Despite the common belief that the collagen molecules are responsible for flexibility and HAp minerals are responsible for stiffness, our results showed that the mineral phase was responsible for limiting collagen sliding in the large deformation regime, which helped the collagen molecules themselves undergo high tensile loading, providing a substantial contribution to the ultimate tensile strength of MCFs. This study also highlights different roles for the mineralized and non-mineralized protofibrils within the MCF, with the mineralized groups being primarily responsible for load carrying due to the presence of the mineral phase, while the non-mineralized groups are responsible for crack deflection. These results provide novel insight into the load-deformation behaviour of MCFs and highlight the intricate role that both collagen and mineral components have in dictating higher scale bone biomechanics.
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Affiliation(s)
- Mahdi Tavakol
- Biomedical Engineering and Biomechanics Research Centre, School of Engineering, College of Science and Engineering, University of Galway, Galway, Ireland
| | - Ted J. Vaughan
- Biomedical Engineering and Biomechanics Research Centre, School of Engineering, College of Science and Engineering, University of Galway, Galway, Ireland
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12
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Epithelial-Mesenchymal Transition Induced in Cancer Cells by Adhesion to Type I Collagen. Int J Mol Sci 2022; 24:ijms24010198. [PMID: 36613638 PMCID: PMC9820580 DOI: 10.3390/ijms24010198] [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: 11/07/2022] [Revised: 12/16/2022] [Accepted: 12/17/2022] [Indexed: 12/25/2022] Open
Abstract
The epithelial-mesenchymal transition (EMT) is an important biological process that is physiologically observed during development, wound healing, and cancer invasion. During EMT induction, cancer cells lose their epithelial properties owing to various tumor microenvironmental factors and begin to exhibit mesenchymal properties, such as loss of apical-basal polarity, weakened intercellular adhesion, and promotion of single cell migration. Several factors, including growth factor stimulation and adhesion to type I collagen (Col-I), induce EMT in cancer cells. Cells adhere to Col-I via specific receptors and induce EMT by activating outside-in signals. In vivo, Col-I molecules often form fibrils, which then assemble into supramolecular structures (gel form). Col-I also self-assembles in vitro under physiological conditions. Notably, Col-I can be used as a culture substrate in both gel and non-gel forms, and the gel formation state of Col-I affects cell fate. Although EMT can be induced in both forms of Col-I, the effects of gel formation on EMT induction remain unclear and somewhat inconsistent. Therefore, this study reviews the relationship between Col-I gel-forming states and EMT induction in cancer cells.
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13
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Nashchekina Y, Nikonov P, Prasolov N, Sulatsky M, Chabina A, Nashchekin A. The Structural Interactions of Molecular and Fibrillar Collagen Type I with Fibronectin and Its Role in the Regulation of Mesenchymal Stem Cell Morphology and Functional Activity. Int J Mol Sci 2022; 23:ijms232012577. [PMID: 36293432 PMCID: PMC9604100 DOI: 10.3390/ijms232012577] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 11/16/2022] Open
Abstract
The observed differences in the structure of native tissue and tissue formed in vitro cause the loss of functional activity of cells cultured in vitro. The lack of fundamental knowledge about the protein mechanism interactions limits the ability to effectively create in vitro native tissue. Collagen is able to spontaneously assemble into fibrils in vitro, but in vivo, other proteins, for example fibronectin, have a noticeable effect on this process. The molecular or fibrillar structure of collagen plays an equally important role. Therefore, we studied the interaction of the molecular and fibrillar structure of collagen with fibronectin. Atomic force and transmission electron microscopy showed that the presence of fibronectin does not affect the native structure and diameter of collagen fibrils. Confocal microscopy demonstrated that the collagen structure affects the cell morphology. Cells are better spread on molecular collagen compared with cells cultured on fibrillar collagen. Fibronectin promotes the formation of a large number of focal contacts, while in combination with collagen of both forms, its effect is leveled. Thus, understanding the mechanisms of the relationship between the protein structure and composition will effectively manage the creation in vitro of a new tissue with native properties.
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Affiliation(s)
- Yuliya Nashchekina
- Institute of Cytology of the Russian Academy of Sciences, Center of Cell Technologies, Tikhoretsky pr. 4, St. Petersburg 194064, Russia
- Correspondence:
| | - Pavel Nikonov
- Institute of Cytology of the Russian Academy of Sciences, Center of Cell Technologies, Tikhoretsky pr. 4, St. Petersburg 194064, Russia
| | - Nikita Prasolov
- Laboratory «Characterization of Materials and Structures of Solid State Electronics», Ioffe Institute, Polytekhnicheskaya Str. 26, St. Petersburg 194021, Russia
| | - Maksim Sulatsky
- Institute of Cytology of the Russian Academy of Sciences, Center of Cell Technologies, Tikhoretsky pr. 4, St. Petersburg 194064, Russia
| | - Alina Chabina
- Institute of Cytology of the Russian Academy of Sciences, Center of Cell Technologies, Tikhoretsky pr. 4, St. Petersburg 194064, Russia
| | - Alexey Nashchekin
- Laboratory «Characterization of Materials and Structures of Solid State Electronics», Ioffe Institute, Polytekhnicheskaya Str. 26, St. Petersburg 194021, Russia
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14
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Yang L, Liu B, Dong X, Wu J, Sun C, Xi L, Cheng R, Wu B, Wang H, Tong S, Wang D, Luo F. Clinical severity prediction in children with osteogenesis imperfecta caused by COL1A1/2 defects. Osteoporos Int 2022; 33:1373-1384. [PMID: 35044492 PMCID: PMC9106613 DOI: 10.1007/s00198-021-06263-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 12/03/2021] [Indexed: 12/03/2022]
Abstract
UNLABELLED Osteogenesis imperfecta (OI) is a genetic disease with an estimated prevalence of 1 in 13,500 and 1 in 9700. The classification into subtypes of OI is important for prognosis and management. In this study, we established a clinical severity prediction model depending on multiple features of variants in COL1A1/2 genes. INTRODUCTION Ninety percent of OI cases are caused by pathogenic variants in the COL1A1/COL1A2 gene. The Sillence classification describes four OI types with variable clinical features ranging from mild symptoms to lethal and progressively deforming symptoms. METHODS We established a prediction model of the clinical severity of OI based on the random forest model with a training set obtained from the Human Gene Mutation Database, including 790 records of the COL1A1/COL1A2 genes. The features used in the prediction model were respectively based on variant-type features only, and the optimized features. RESULTS With the training set, the prediction results showed that the area under the receiver operating characteristic curve (AUC) for predicting lethal to severe OI or mild/moderate OI was 0.767 and 0.902, respectively, when using variant-type features only and optimized features for COL1A1 defects, 0.545 and 0.731, respectively, for COL1A2 defects. For the 17 patients from our hospital, prediction accuracy for the patient with the COL1A1 and COL1A2 defects was 76.5% (95% CI: 50.1-93.2%) and 88.2% (95% CI: 63.6-98.5%), respectively. CONCLUSION We established an OI severity prediction model depending on multiple features of the specific variants in COL1A1/2 genes, with a prediction accuracy of 76-88%. This prediction algorithm is a promising alternative that could prove to be valuable in clinical practice.
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Affiliation(s)
- Lin Yang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China
| | - Bo Liu
- Key Laboratory of Birth Defects, Children's Hospital of Fudan University, Shanghai, 201102, China
- Division of Neonatology, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Xinran Dong
- Key Laboratory of Birth Defects, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Jing Wu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China
| | - Chengjun Sun
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China
| | - Li Xi
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China
| | - Ruoqian Cheng
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China
| | - Bingbing Wu
- Key Laboratory of Birth Defects, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Huijun Wang
- Key Laboratory of Birth Defects, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Shiyuan Tong
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 201102, China
| | - Dahui Wang
- Division of Orthopedics, Children's Hospital of Fudan University, 399 Wanyuan Road, Shanghai, 201102, China.
| | - Feihong Luo
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, 399 Wan Yuan Road, Shanghai, 201102, China.
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15
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Maher MK, White JF, Glattauer V, Yue Z, Hughes TC, Ramshaw JAM, Wallace GG. Variation in Hydrogel Formation and Network Structure for Telo-, Atelo- and Methacrylated Collagens. Polymers (Basel) 2022; 14:polym14091775. [PMID: 35566947 PMCID: PMC9103955 DOI: 10.3390/polym14091775] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/20/2022] [Accepted: 04/23/2022] [Indexed: 01/27/2023] Open
Abstract
As the most abundant protein in the extracellular matrix, collagen has become widely studied in the fields of tissue engineering and regenerative medicine. Of the various collagen types, collagen type I is the most commonly utilised in laboratory studies. In tissues, collagen type I forms into fibrils that provide an extended fibrillar network. In tissue engineering and regenerative medicine, little emphasis has been placed on the nature of the network that is formed. Various factors could affect the network structure, including the method used to extract collagen from native tissue, since this may remove the telopeptides, and the nature and extent of any chemical modifications and crosslinking moieties. The structure of any fibril network affects cellular proliferation and differentiation, as well as the overall modulus of hydrogels. In this study, the network-forming properties of two distinct forms of collagen (telo- and atelo-collagen) and their methacrylated derivatives were compared. The presence of the telopeptides facilitated fibril formation in the unmodified samples, but this benefit was substantially reduced by subsequent methacrylation, leading to a loss in the native self-assembly potential. Furthermore, the impact of the methacrylation of the collagen, which enables rapid crosslinking and makes it suitable for use in 3D printing, was investigated. The crosslinking of the methacrylated samples (both telo- and atelo-) was seen to improve the fibril-like network compared to the non-crosslinked samples. This contrasted with the samples of methacrylated gelatin, which showed little, if any, fibrillar or ordered network structure, regardless of whether they were crosslinked.
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Affiliation(s)
- Malachy Kevin Maher
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Wollongong, NSW 2519, Australia; (M.K.M.); (Z.Y.)
- CSIRO Manufacturing, Clayton, Melbourne, VIC 3168, Australia; (J.F.W.); (V.G.); (T.C.H.)
| | - Jacinta F. White
- CSIRO Manufacturing, Clayton, Melbourne, VIC 3168, Australia; (J.F.W.); (V.G.); (T.C.H.)
| | - Veronica Glattauer
- CSIRO Manufacturing, Clayton, Melbourne, VIC 3168, Australia; (J.F.W.); (V.G.); (T.C.H.)
| | - Zhilian Yue
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Wollongong, NSW 2519, Australia; (M.K.M.); (Z.Y.)
| | - Timothy C. Hughes
- CSIRO Manufacturing, Clayton, Melbourne, VIC 3168, Australia; (J.F.W.); (V.G.); (T.C.H.)
| | - John A. M. Ramshaw
- Department of Surgery, St. Vincent’s Hospital, University of Melbourne, Melbourne, VIC 3065, Australia;
| | - Gordon G. Wallace
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Wollongong, NSW 2519, Australia; (M.K.M.); (Z.Y.)
- Correspondence: ; Tel.: +61-(0)-2-4221-3127
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16
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Omar H, Gao F, Yoo H, Bim O, Garcia C, LePard KJ, Mitchell JC, Agostini-Walesch G, Carrilho MR. Changes to dentin extracellular matrix following treatment with plant-based polyphenols. J Mech Behav Biomed Mater 2022; 126:105055. [PMID: 34929591 DOI: 10.1016/j.jmbbm.2021.105055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/11/2021] [Accepted: 12/14/2021] [Indexed: 12/24/2022]
Abstract
This study investigated whether treatment with plant-based polyphenols (PB-P) affected the biochemical and/or biomechanical properties of dentin extracellular matrix (ECM). Three PB-Ps were evaluated: luteolin (LT), galangin (GL), and proanthocyanidin (PAC). Because dentin ECM requires demineralization before treatment, this study also assessed the effect of these PB-Ps on dentin demineralized by two different chemicals. Dentin samples from extracted third molars were obtained, sectioned, and randomly assigned for demineralization with either phosphoric acid (PA) or ethylenediaminetetraacetic acid (EDTA). Following demineralization, baseline infrared (IR) spectra and apparent elastic modulus (AE) of each specimen were independently acquired. Based upon these initial tests, samples were randomly assigned to one of the PB-P treatments to ensure that distribution of baseline AE was similar across treatment groups. IR and AE specimens were individually immersed in either 0.2% LT, 0.4% GL or 1% PAC for 2 min. IR spectra of treated samples were compared to baseline IR spectra, looking for any interaction of PB-Ps with the demineralized dentin. The IR spectrum and AE of each PB-P-treated specimen were compared with their own correspondent baseline measurement. The ability of PB-Ps to inhibit proteolytic activity of dentin ECM was assessed by the hydroxyproline assay. Finally, the effect of PB-Ps on immediate bond strength of a dental adhesive to PA- or EDTA-etched dentin was also evaluated. PB-Ps exhibited distinctively binding affinity to dentin ECM and promoted significant increase in AE. PB-P treatment reduced the degradation rate of dentin ECM without causing detrimental effect on immediate bond strength to dentin. Our work represents the first-time that LT and GL have been assessed as dentin ECM biomodifiers.
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Affiliation(s)
- Hussan Omar
- College of Graduate Studies, Biomedicals Science Program, Midwestern University, Downers Grove, IL, USA; College of Pharmacy - Arizona, Midwestern University, Glendale, AZ, USA
| | - Feng Gao
- College of Dental Medicine - Illinois, Midwestern University, Downers Grove, IL, USA
| | - Hyemin Yoo
- College of Dental Medicine - Illinois, Midwestern University, Downers Grove, IL, USA
| | - Odair Bim
- School of Dentistry, Marquette University, Milwaukee, WI, USA
| | - Carolina Garcia
- College of Dental Medicine - Illinois, Midwestern University, Downers Grove, IL, USA
| | - Kathy J LePard
- College of Graduate Studies, Biomedicals Science Program, Midwestern University, Downers Grove, IL, USA
| | - John C Mitchell
- College of Dental Medicine - Illinois, Midwestern University, Downers Grove, IL, USA; College of Dental Medicine - Arizona, Midwestern University, Glendale, IL, USA
| | | | - Marcela R Carrilho
- College of Dental Medicine - Illinois, Midwestern University, Downers Grove, IL, USA.
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17
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Wei Y, Hao B, Wang Y, Wang Y, Xiao H, Li L, Huang X, Shi B. Tannery solid waste-derived cross-scale deformable piezoresistive sensors for monitoring human body motions. JOURNAL OF MATERIALS CHEMISTRY C 2022. [DOI: 10.1039/d2tc00718e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Cross-scale deformable piezoresistive sensors with a pillar-supported directional multi-layer structure were prepared by using tannery solid wastes, which were highly efficient for monitoring human body motions.
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Affiliation(s)
- Yingjie Wei
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P. R. China
- Department of Biomass Chemistry and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Baicun Hao
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P. R. China
- Department of Biomass Chemistry and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Yanan Wang
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P. R. China
- Department of Biomass Chemistry and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Yujia Wang
- Department of Biomass Chemistry and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Hanzhong Xiao
- Department of Biomass Chemistry and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Li Li
- Cosmetics Safety and Efficacy Evaluation Center, West China Hospital, Sichuan University, Chengdu 610065, P. R. China
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu 610065, P. R. China
- NMPA Key Laboratory for Human Evaluation and Big Data of Cosmetics, Sichuan University, Chengdu 610065, P. R. China
- Sichuan Engineering Technology Research Center of Cosmetic, Chengdu 610065, P. R. China
| | - Xin Huang
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P. R. China
- Department of Biomass Chemistry and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Bi Shi
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P. R. China
- Department of Biomass Chemistry and Engineering, Sichuan University, Chengdu 610065, P. R. China
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18
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Wang J, Liu Q, Guo Z, Pan H, Liu Z, Tang R. Progress on Biomimetic Mineralization and Materials for Hard Tissue Regeneration. ACS Biomater Sci Eng 2021; 9:1757-1773. [PMID: 34870411 DOI: 10.1021/acsbiomaterials.1c01070] [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: 12/28/2022]
Abstract
Biomineralization is a process in which natural organisms regulate the crystal growth of inorganic minerals, resulting in hierarchical structured biominerals with excellent properties. Typical biominerals in the human body are the bones and teeth, and damage to these hard tissues directly affect our daily lives. The repair of bones and teeth in a biomimetic way, either by using a biomimetic mineralization strategy or biomimetic materials, is the key for hard tissue regeneration. In this review, we briefly introduce the structure of bone and tooth, and highlight the fundamental role of collagen mineralization in tissue repair. The recent progress on intra-/extrafibrillar collagen mineralization by a biomimetic strategy or materials is presented, and their potential for tissue regeneration is discussed. Then, recent achievements on bone and tooth repair are summarized, and these works are discussed in the view of materials science and biological science, providing a broader vision for the future research of hard tissue repair techniques. Lastly, recent progress on hard tissue regeneration is concluded, and existing problems and future directions are prospected.
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Affiliation(s)
- Jie Wang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Qiqi Liu
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Zhengxi Guo
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Haihua Pan
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou 310027, China
| | - Zhaoming Liu
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China.,State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Ruikang Tang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China.,State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, Zhejiang 310027, China
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19
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Collagen Scaffolds Treated by Hydrogen Peroxide for Cell Cultivation. Polymers (Basel) 2021; 13:polym13234134. [PMID: 34883637 PMCID: PMC8659075 DOI: 10.3390/polym13234134] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 12/21/2022] Open
Abstract
Collagen in the body is exposed to a range of influences, including free radicals, which can lead to a significant change in its structure. Modeling such an effect on collagen fibrils will allow one to get a native structure in vitro, which is important for modern tissue engineering. The aim of this work is to study the effect of free radicals on a solution of hydrogen peroxide with a concentration of 0.006–0.15% on the structure of collagen fibrils in vitro, and the response of cells to such treatment. SEM measurements show a decrease in the diameter of the collagen fibrils with an increase in the concentration of hydrogen peroxide. Such treatment also leads to an increase in the wetting angle of the collagen surface. Fourier transform infrared spectroscopy demonstrates a decrease in the signal with wave number 1084 cm−1 due to the detachment of glucose and galactose linked to hydroxylysine, connected to the collagen molecule through the -C-O-C- group. During the first day of cultivating ASCs, MG-63, and A-431 cells, an increase in cell adhesion on collagen fibrils treated with H2O2 (0.015, 0.03%) was observed. Thus the effect of H2O2 on biologically relevant extracellular matrices for the formation of collagen scaffolds was shown.
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20
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Mammary collagen is under reproductive control with implications for breast cancer. Matrix Biol 2021; 105:104-126. [PMID: 34839002 DOI: 10.1016/j.matbio.2021.10.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 07/26/2021] [Accepted: 10/29/2021] [Indexed: 12/20/2022]
Abstract
Mammographically-detected breast density impacts breast cancer risk and progression, and fibrillar collagen is a key component of breast density. However, physiologic factors influencing collagen production in the breast are poorly understood. In female rats, we analyzed gene expression of the most abundantly expressed mammary collagens and collagen-associated proteins across a pregnancy, lactation, and weaning cycle. We identified a triphasic pattern of collagen gene regulation and evidence for reproductive state-dependent composition. An initial phase of collagen deposition occurred during pregnancy, followed by an active phase of collagen suppression during lactation. The third phase of collagen regulation occurred during weaning-induced mammary gland involution, which was characterized by increased collagen deposition. Concomitant changes in collagen protein abundance were confirmed by Masson's trichrome staining, second harmonic generation (SHG) imaging, and mass spectrometry. We observed similar reproductive-state dependent collagen patterns in human breast tissue obtained from premenopausal women. SHG analysis also revealed structural variation in collagen across a reproductive cycle, with higher packing density and more collagen fibers arranged perpendicular to the mammary epithelium in the involuting rat mammary gland compared to nulliparous and lactating glands. Involution was also characterized by high expression of the collagen cross-linking enzyme lysyl oxidase, which was associated with increased levels of cross-linked collagen. Breast cancer relevance is suggested, as we found that breast cancer diagnosed in recently postpartum women displayed gene expression signatures of increased collagen deposition and crosslinking compared to breast cancers diagnosed in age-matched nulliparous women. Using publically available data sets, we found this involution-like, collagen gene signature correlated with poor progression-free survival in breast cancer patients overall and in younger women. In sum, these findings of physiologic collagen regulation in the normal mammary gland may provide insight into normal breast function, the etiology of breast density, and inform breast cancer risk and outcomes.
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21
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Reye G, Huang X, Haupt LM, Murphy RJ, Northey JJ, Thompson EW, Momot KI, Hugo HJ. Mechanical Pressure Driving Proteoglycan Expression in Mammographic Density: a Self-perpetuating Cycle? J Mammary Gland Biol Neoplasia 2021; 26:277-296. [PMID: 34449016 PMCID: PMC8566410 DOI: 10.1007/s10911-021-09494-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 07/05/2021] [Indexed: 12/23/2022] Open
Abstract
Regions of high mammographic density (MD) in the breast are characterised by a proteoglycan (PG)-rich fibrous stroma, where PGs mediate aligned collagen fibrils to control tissue stiffness and hence the response to mechanical forces. Literature is accumulating to support the notion that mechanical stiffness may drive PG synthesis in the breast contributing to MD. We review emerging patterns in MD and other biological settings, of a positive feedback cycle of force promoting PG synthesis, such as in articular cartilage, due to increased pressure on weight bearing joints. Furthermore, we present evidence to suggest a pro-tumorigenic effect of increased mechanical force on epithelial cells in contexts where PG-mediated, aligned collagen fibrous tissue abounds, with implications for breast cancer development attributable to high MD. Finally, we summarise means through which this positive feedback mechanism of PG synthesis may be intercepted to reduce mechanical force within tissues and thus reduce disease burden.
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Affiliation(s)
- Gina Reye
- School of Biomedical Sciences, Gardens Point, Queensland University of Technology (QUT), Kelvin Grove, QLD, 4059, Australia
- Translational Research Institute, Woolloongabba, QLD, Australia
| | - Xuan Huang
- School of Biomedical Sciences, Gardens Point, Queensland University of Technology (QUT), Kelvin Grove, QLD, 4059, Australia
- Translational Research Institute, Woolloongabba, QLD, Australia
| | - Larisa M Haupt
- Centre for Genomics and Personalised Health, Genomics Research Centre, School of Biomedical Sciences, Faculty of Health, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), 60 Musk Ave, Kelvin Grove, QLD, 4059, Australia
| | - Ryan J Murphy
- School of Mathematical Sciences, Gardens Point, Queensland University of Technology (QUT), Kelvin Grove, QLD, Australia
| | - Jason J Northey
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Erik W Thompson
- School of Biomedical Sciences, Gardens Point, Queensland University of Technology (QUT), Kelvin Grove, QLD, 4059, Australia
- Translational Research Institute, Woolloongabba, QLD, Australia
| | - Konstantin I Momot
- School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, QLD, Australia
| | - Honor J Hugo
- School of Biomedical Sciences, Gardens Point, Queensland University of Technology (QUT), Kelvin Grove, QLD, 4059, Australia.
- Translational Research Institute, Woolloongabba, QLD, Australia.
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22
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Varma S, Orgel JPRO, Schieber JD. Contrasting Local and Macroscopic Effects of Collagen Hydroxylation. Int J Mol Sci 2021; 22:ijms22169068. [PMID: 34445791 PMCID: PMC8396666 DOI: 10.3390/ijms22169068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/16/2021] [Accepted: 08/20/2021] [Indexed: 11/16/2022] Open
Abstract
Collagen is heavily hydroxylated. Experiments show that proline hydroxylation is important to triple helix (monomer) stability, fibril assembly, and interaction of fibrils with other molecules. Nevertheless, experiments also show that even without hydroxylation, type I collagen does assemble into its native D-banded fibrillar structure. This raises two questions. Firstly, even though hydroxylation removal marginally affects macroscopic structure, how does such an extensive chemical change, which is expected to substantially reduce hydrogen bonding capacity, affect local structure? Secondly, how does such a chemical perturbation, which is expected to substantially decrease electrostatic attraction between monomers, affect collagen's mechanical properties? To address these issues, we conduct a benchmarked molecular dynamics study of rat type I fibrils in the presence and absence of hydroxylation. Our simulations reproduce the experimental observation that hydroxylation removal has a minimal effect on collagen's D-band length. We also find that the gap-overlap ratio, monomer width and monomer length are minimally affected. Surprisingly, we find that de-hydroxylation also has a minor effect on the fibril's Young's modulus, and elastic stress build up is also accompanied by tightening of triple-helix windings. In terms of local structure, de-hydroxylation does result in a substantial drop (23%) in inter-monomer hydrogen bonding. However, at the same time, the local structures and inter-monomer hydrogen bonding networks of non-hydroxylated amino acids are also affected. It seems that it is this intrinsic plasticity in inter-monomer interactions that preclude fibrils from undergoing any large changes in macroscopic properties. Nevertheless, changes in local structure can be expected to directly impact collagen's interaction with extra-cellular matrix proteins. In general, this study highlights a key challenge in tissue engineering and medicine related to mapping collagen chemistry to macroscopic properties but suggests a path forward to address it using molecular dynamics simulations.
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Affiliation(s)
- Sameer Varma
- Department of Cell Biology, Microbiology and Molecular Biology, Department of Physics, University of South Florida, Tampa, FL 33620, USA
- Correspondence:
| | - Joseph P. R. O. Orgel
- Department of Biology, Department of Physics, Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA;
| | - Jay D. Schieber
- Department of Chemical and Biological Engineering, Department of Physics, Illinois Institute of Technology, Chicago, IL 60616, USA;
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23
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Álvarez S, Leiva-Sabadini C, Schuh CMAP, Aguayo S. Bacterial adhesion to collagens: implications for biofilm formation and disease progression in the oral cavity. Crit Rev Microbiol 2021; 48:83-95. [PMID: 34270375 DOI: 10.1080/1040841x.2021.1944054] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Collagen is the most abundant structural protein in the body and the main component of the extracellular matrix of most tissues, including dentine and periodontal tissues. Despite the well-characterized role of collagen and specifically type-I collagen, as a ligand for host cells, its role as a substrate for bacterial adhesion and biofilm formation is less explored. Therefore, the purpose of this review is to discuss recent findings regarding the adhesion of oral bacteria to collagen surfaces and its role in the progression and severity of oral and systemic diseases. Initial oral colonizers such as streptococci have evolved collagen-binding proteins (cbp) that are important for the colonization of dentine and periodontal tissues. Also, periodontal pathogens such as Porphyromonas gingivalis and Tannerella forsythia utilise cbps for tissue sensing and subsequent invasion. The implications of bacteria-collagen coupling in the context of collagen biomaterials and regenerative dentistry approaches are also addressed. Furthermore, the importance of interdisciplinary techniques such as atomic force microscopy for the nanocharacterization of bacteria-collagen interactions is also considered. Overall, understanding the process of oral bacterial adhesion onto collagen is important for developing future therapeutic approaches against oral and systemic diseases, by modulating the early stages of biofilm formation.
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Affiliation(s)
- Simón Álvarez
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana-Universidad del Desarrollo, Santiago, Chile.,Dentistry School, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Camila Leiva-Sabadini
- Dentistry School, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Christina M A P Schuh
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Sebastian Aguayo
- Dentistry School, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.,Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
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24
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Ustriyana P, Schulte F, Gombedza F, Gil-Bona A, Paruchuri S, Bidlack FB, Hardt M, Landis WJ, Sahai N. Spatial survey of non-collagenous proteins in mineralizing and non-mineralizing vertebrate tissues ex vivo. Bone Rep 2021; 14:100754. [PMID: 33665237 PMCID: PMC7900015 DOI: 10.1016/j.bonr.2021.100754] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/05/2021] [Accepted: 02/05/2021] [Indexed: 11/24/2022] Open
Abstract
Bone biomineralization is a complex process in which type I collagen and associated non-collagenous proteins (NCPs), including glycoproteins and proteoglycans, interact closely with inorganic calcium and phosphate ions to control the precipitation of nanosized, non-stoichiometric hydroxyapatite (HAP, idealized stoichiometry Ca10(PO4)6(OH)2) within the organic matrix of a tissue. The ability of certain vertebrate tissues to mineralize is critically related to several aspects of their function. The goal of this study was to identify specific NCPs in mineralizing and non-mineralizing tissues of two animal models, rat and turkey, and to determine whether some NCPs are unique to each type of tissue. The tissues investigated were rat femur (mineralizing) and tail tendon (non-mineralizing) and turkey leg tendon (having both mineralizing and non-mineralizing regions in the same individual specimen). An experimental approach ex vivo was designed for this investigation by combining sequential protein extraction with comprehensive protein mapping using proteomics and Western blotting. The extraction method enabled separation of various NCPs based on their association with either the extracellular organic collagenous matrix phases or the inorganic mineral phases of the tissues. The proteomics work generated a complete picture of NCPs in different tissues and animal species. Subsequently, Western blotting provided validation for some of the proteomics findings. The survey then yielded generalized results relevant to various protein families, rather than only individual NCPs. This study focused primarily on the NCPs belonging to the small leucine-rich proteoglycan (SLRP) family and the small integrin-binding ligand N-linked glycoproteins (SIBLINGs). SLRPs were found to be associated only with the collagenous matrix, a result suggesting that they are mainly involved in structural matrix organization and not in mineralization. SIBLINGs as well as matrix Gla (γ-carboxyglutamate) protein were strictly localized within the inorganic mineral phase of mineralizing tissues, a finding suggesting that their roles are limited to mineralization. The results from this study indicated that osteocalcin was closely involved in mineralization but did not preclude possible additional roles as a hormone. This report provides for the first time a spatial survey and comparison of NCPs from mineralizing and non-mineralizing tissues ex vivo and defines the proteome of turkey leg tendons as a model for vertebrate mineralization.
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Key Words
- B, rat bone
- BSP, bone sialoprotein
- DCN, decorin
- E, EDTA extract
- ECM, extracellular matrix
- G, guanidine-HCl-only extract (for non-mineralizing tissues)
- G1, first guanidine-HCl extract
- G2, second guanidine-HCl extract
- Gla, gamma-carboxylated glutamic acid
- MGP, matrix Gla protein
- MT, turkey mineralizing tendon
- Mineralization
- NCP, non-collagenous protein
- NMT, turkey never-mineralizing tendon
- NT, turkey not-yet-mineralized tendon
- Non-collagenous protein
- OCN, osteocalcin
- OPN, osteopontin
- Proteomics
- SIBLING, small integrin-binding ligand N-linked glycoprotein
- SLRP, small leucine-rich proteoglycan
- T, rat tail tendon
- TLT, turkey leg tendon (gastrocnemius)
- TNAP, tissue-nonspecific alkaline phosphatase
- Type I collagen
- Vertebrate
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Affiliation(s)
- Putu Ustriyana
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, OH 44325, USA
| | - Fabian Schulte
- The Forsyth Institute, Cambridge, MA 02142, USA
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Farai Gombedza
- Department of Chemistry, The University of Akron, Akron, OH 44325, USA
| | - Ana Gil-Bona
- The Forsyth Institute, Cambridge, MA 02142, USA
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Sailaja Paruchuri
- Department of Chemistry, The University of Akron, Akron, OH 44325, USA
| | - Felicitas B. Bidlack
- The Forsyth Institute, Cambridge, MA 02142, USA
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Markus Hardt
- The Forsyth Institute, Cambridge, MA 02142, USA
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - William J. Landis
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, OH 44325, USA
| | - Nita Sahai
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, OH 44325, USA
- Department of Geosciences, The University of Akron, Akron, OH 44325, USA
- Integrated Bioscience Program, The University of Akron, Akron, OH 44325, USA
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25
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Oosterlaken BM, Vena MP, de With G. In Vitro Mineralization of Collagen. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004418. [PMID: 33711177 DOI: 10.1002/adma.202004418] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/29/2020] [Indexed: 06/12/2023]
Abstract
Collagen mineralization is a biological process in many skeletal elements in the animal kingdom. Examples of these collagen-based skeletons are the siliceous spicules of glass sponges or the intrafibrillar hydroxyapatite platelets in vertebrates. The mineralization of collagen in vitro has gained interest for two reasons: understanding the processes behind bone formation and the synthesis of scaffolds for tissue engineering. In this paper, the efforts toward collagen mineralization in vitro are reviewed. First, general introduction toward collagen type I, the main component of the extracellular matrix in animals, is provided, followed by a brief overview of collagenous skeletons. Then, the in vitro mineralization of collagen is critically reviewed. Due to their biological abundance, hydroxyapatite and silica are the focus of this review. To a much lesser extent, also some efforts with other minerals are outlined. Combining all minerals and the suggested mechanisms for each mineral, a general mechanism for the intrafibrillar mineralization of collagen is proposed. This review concludes with an outlook for further improvement of collagen-based tissue engineering scaffolds.
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Affiliation(s)
- Bernette Maria Oosterlaken
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, Eindhoven, MB, 5600, The Netherlands
| | - Maria Paula Vena
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, Eindhoven, MB, 5600, The Netherlands
| | - Gijsbertus de With
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, Eindhoven, MB, 5600, The Netherlands
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26
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Cencha LG, Allasia M, Ronco LI, Luque GC, Picchio ML, Minari RJ, Gugliotta LM. Proteins as Promising Biobased Building Blocks for Preparing Functional Hybrid Protein/Synthetic Polymer Nanoparticles. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05958] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Luisa G. Cencha
- Polymer Reaction Engineering Group, INTEC, Universidad Nacional del Litoral, CONICET, Santa
Fe, Santa Fe, S3000, Argentina
- Facultad de Ingeniería y Ciencias Hídricas, Universidad Nacional del Litoral, Santa Fe, Santa Fe, S3000, Argentina
| | - Mariana Allasia
- Polymer Reaction Engineering Group, INTEC, Universidad Nacional del Litoral, CONICET, Santa
Fe, Santa Fe, S3000, Argentina
| | - Ludmila I. Ronco
- Polymer Reaction Engineering Group, INTEC, Universidad Nacional del Litoral, CONICET, Santa
Fe, Santa Fe, S3000, Argentina
- Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Santa Fe, S3000, Argentina
| | - Gisela C. Luque
- Polymer Reaction Engineering Group, INTEC, Universidad Nacional del Litoral, CONICET, Santa
Fe, Santa Fe, S3000, Argentina
- Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Santa Fe, S3000, Argentina
| | - Matías L. Picchio
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, IPQA—CONICET, Córdoba, Córdoba, X5000, Argentina
| | - Roque J. Minari
- Polymer Reaction Engineering Group, INTEC, Universidad Nacional del Litoral, CONICET, Santa
Fe, Santa Fe, S3000, Argentina
- Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Santa Fe, S3000, Argentina
| | - Luis M. Gugliotta
- Polymer Reaction Engineering Group, INTEC, Universidad Nacional del Litoral, CONICET, Santa
Fe, Santa Fe, S3000, Argentina
- Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Santa Fe, S3000, Argentina
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27
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Abstract
The functions of coat protein complex II (COPII) coats in cargo packaging and the creation of vesicles at the endoplasmic reticulum are conserved in eukaryotic protein secretion. Standard COPII vesicles, however, cannot handle the secretion of metazoan-specific cargoes such as procollagens, apolipoproteins, and mucins. Metazoans have thus evolved modules centered on proteins like TANGO1 (transport and Golgi organization 1) to engage COPII coats and early secretory pathway membranes to engineer a novel mode of cargo export at the endoplasmic reticulum.
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Affiliation(s)
- I Raote
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona 08003, Spain; ,
| | - V Malhotra
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona 08003, Spain; , .,Universitat Pompeu Fabra (UPF), Barcelona 08002, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona 08010, Spain
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28
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Ejiugwo M, Rochev Y, Gethin G, O'Connor G. Toward Developing Immunocompetent Diabetic Foot Ulcer-on-a-Chip Models for Drug Testing. Tissue Eng Part C Methods 2021; 27:77-88. [PMID: 33406980 DOI: 10.1089/ten.tec.2020.0331] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Bioengineering of skin has been significantly explored, ranging from the use of traditional cell culture systems to the most recent organ-on-a-chip (OoC) technology that permits skin modeling on physiological scales among other benefits. This article presents key considerations for developing physiologically relevant immunocompetent diabetic foot ulcer (DFU) models. Diabetic foot ulceration affects hundreds of millions of individuals globally, especially the elderly, and constitutes a major socioeconomic burden. When DFUs are not treated and managed in a timely manner, 15-50% of patients tend to undergo partial or complete amputation of the affected limb. Consequently, at least 40% of such patients die within 5 years postamputation. Currently, therapeutic strategies are actively sought and developed. However, present-day preclinical platforms (animals and in vitro models) are not robust enough to provide reliable data for clinical trials. Insights from published works on immunocompetent skin-on-a-chip models and bioengineering considerations, presented in this article, can inform researchers on how to develop robust OoC models for testing topical therapies such as growth factor-based therapies for DFUs. We propose that immunocompetent DFU-on-a-chip models should be bioengineered using diseased cells derived from individuals; in particular, the pathophysiological contribution of macrophages in diabetic wound healing, along with the typical fibroblasts and keratinocytes, needs to be recapitulated. The ideal model should consist of the following components: diseased cells embedded in reproducible scaffolds, which permit endogenous "diseased" extracellular matrix deposition, and the integration of the derived immunocompetent DFU model onto a microfluidic platform. The proposed DFU platforms will eventually facilitate reliable and robust drug testing of wound healing therapeutics, coupled with reduced clinical trial failure rates. Impact statement Current animal and cell-based systems are not physiologically relevant enough to retrieve reliable results for clinical translation of diabetic foot ulcer (DFU) therapies. Organ-on-a-chip (OoC) technology offers desirable features that could finally enable the vision of modeling DFU for pathophysiological studies and drug testing at a microscale. This article brings together the significant recent findings relevant to developing a minimally functional immunocompetent DFU-on-a-chip model, as wound healing cannot occur without a proper functioning immune response. It looks feasible in the future to recapitulate the stagnant inflammation in DFU (thought to impede wound healing) using OoC, diseased cells, and an endogenously produced extracellular matrix.
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Affiliation(s)
- Mirella Ejiugwo
- SFI CÚRAM Centre for Research in Medical Devices, National University of Ireland Galway, Galway City, Ireland.,School of Physics, and National University of Ireland Galway, Galway City, Ireland
| | - Yury Rochev
- SFI CÚRAM Centre for Research in Medical Devices, National University of Ireland Galway, Galway City, Ireland.,School of Physics, and National University of Ireland Galway, Galway City, Ireland
| | - Georgina Gethin
- SFI CÚRAM Centre for Research in Medical Devices, National University of Ireland Galway, Galway City, Ireland.,School of Nursing and Midwifery, National University of Ireland Galway, Galway City, Ireland
| | - Gerard O'Connor
- SFI CÚRAM Centre for Research in Medical Devices, National University of Ireland Galway, Galway City, Ireland.,School of Physics, and National University of Ireland Galway, Galway City, Ireland
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29
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Xu Y, Kirchner M. Collagen Mimetic Peptides. Bioengineering (Basel) 2021; 8:5. [PMID: 33466358 PMCID: PMC7824840 DOI: 10.3390/bioengineering8010005] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/24/2020] [Accepted: 12/31/2020] [Indexed: 12/20/2022] Open
Abstract
Since their first synthesis in the late 1960s, collagen mimetic peptides (CMPs) have been used as a molecular tool to study collagen, and as an approach to develop novel collagen mimetic biomaterials. Collagen, a major extracellular matrix (ECM) protein, plays vital roles in many physiological and pathogenic processes. Applications of CMPs have advanced our understanding of the structure and molecular properties of a collagen triple helix-the building block of collagen-and the interactions of collagen with important molecular ligands. The accumulating knowledge is also paving the way for developing novel CMPs for biomedical applications. Indeed, for the past 50 years, CMP research has been a fast-growing, far-reaching interdisciplinary field. The major development and achievement of CMPs were documented in a few detailed reviews around 2010. Here, we provided a brief overview of what we have learned about CMPs-their potential and their limitations. We focused on more recent developments in producing heterotrimeric CMPs, and CMPs that can form collagen-like higher order molecular assemblies. We also expanded the traditional view of CMPs to include larger designed peptides produced using recombinant systems. Studies using recombinant peptides have provided new insights on collagens and promoted progress in the development of collagen mimetic fibrillar self-assemblies.
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Affiliation(s)
- Yujia Xu
- Department of Chemistry, Hunter College of the City University of New York, 695 Park Ave., New York, NY 10065, USA;
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30
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Collagen Structure-Function Mapping Informs Applications for Regenerative Medicine. Bioengineering (Basel) 2020; 8:bioengineering8010003. [PMID: 33383610 PMCID: PMC7824244 DOI: 10.3390/bioengineering8010003] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/21/2022] Open
Abstract
Type I collagen, the predominant protein of vertebrates, assembles into fibrils that orchestrate the form and function of bone, tendon, skin, and other tissues. Collagen plays roles in hemostasis, wound healing, angiogenesis, and biomineralization, and its dysfunction contributes to fibrosis, atherosclerosis, cancer metastasis, and brittle bone disease. To elucidate the type I collagen structure-function relationship, we constructed a type I collagen fibril interactome, including its functional sites and disease-associated mutations. When projected onto an X-ray diffraction model of the native collagen microfibril, data revealed a matrix interaction domain that assumes structural roles including collagen assembly, crosslinking, proteoglycan (PG) binding, and mineralization, and the cell interaction domain supporting dynamic aspects of collagen biology such as hemostasis, tissue remodeling, and cell adhesion. Our type III collagen interactome corroborates this model. We propose that in quiescent tissues, the fibril projects a structural face; however, tissue injury releases blood into the collagenous stroma, triggering exposure of the fibrils' cell and ligand binding sites crucial for tissue remodeling and regeneration. Applications of our research include discovery of anti-fibrotic antibodies and elucidating their interactions with collagen, and using insights from our angiogenesis studies and collagen structure-function model to inform the design of super-angiogenic collagens and collagen mimetics.
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31
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Bielajew BJ, Hu JC, Athanasiou KA. Collagen: quantification, biomechanics, and role of minor subtypes in cartilage. NATURE REVIEWS. MATERIALS 2020; 5:730-747. [PMID: 33996147 PMCID: PMC8114887 DOI: 10.1038/s41578-020-0213-1] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/28/2020] [Indexed: 05/02/2023]
Abstract
Collagen is a ubiquitous biomaterial in vertebrate animals. Although each of its 28 subtypes contributes to the functions of many different tissues in the body, most studies on collagen or collagenous tissues have focussed on only one or two subtypes. With recent developments in analytical chemistry, especially mass spectrometry, significant advances have been made toward quantifying the different collagen subtypes in various tissues; however, high-throughput and low-cost methods for collagen subtype quantification do not yet exist. In this Review, we introduce the roles of collagen subtypes and crosslinks, and describe modern assays that enable a deep understanding of tissue physiology and disease states. Using cartilage as a model tissue, we describe the roles of major and minor collagen subtypes in detail; discuss known and unknown structure-function relationships; and show how tissue engineers may harness the functional characteristics of collagen to engineer robust neotissues.
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Affiliation(s)
- Benjamin J. Bielajew
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92617, USA
| | - Jerry C. Hu
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92617, USA
| | - Kyriacos A. Athanasiou
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92617, USA
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32
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Tang M, Wang X, Gandhi NS, Foley BL, Burrage K, Woods RJ, Gu Y. Effect of hydroxylysine-O-glycosylation on the structure of type I collagen molecule: A computational study. Glycobiology 2020; 30:830-843. [PMID: 32188979 PMCID: PMC7526737 DOI: 10.1093/glycob/cwaa026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/07/2020] [Accepted: 03/16/2020] [Indexed: 12/25/2022] Open
Abstract
Collagen undergoes many types of post-translational modifications (PTMs), including intracellular modifications and extracellular modifications. Among these PTMs, glycosylation of hydroxylysine (Hyl) is the most complicated. Experimental studies demonstrated that this PTM ceases once the collagen triple helix is formed and that Hyl-O-glycosylation modulates collagen fibrillogenesis. However, the underlying atomic-level mechanisms of these phenomena remain unclear. In this study, we first adapted the force field parameters for O-linkages between Hyl and carbohydrates and then investigated the influence of Hyl-O-glycosylation on the structure of type I collagen molecule, by performing comprehensive molecular dynamic simulations in explicit solvent of collagen molecule segment with and without the glycosylation of Hyl. Data analysis demonstrated that (i) collagen triple helices remain in a triple-helical structure upon glycosylation of Hyl; (ii) glycosylation of Hyl modulates the peptide backbone conformation and their solvation environment in the vicinity and (iii) the attached sugars are arranged such that their hydrophilic faces are well exposed to the solvent, while their hydrophobic faces point towards the hydrophobic portions of collagen. The adapted force field parameters for O-linkages between Hyl and carbohydrates will aid future computational studies on proteins with Hyl-O-glycosylation. In addition, this work, for the first time, presents the detailed effect of Hyl-O-glycosylation on the structure of human type I collagen at the atomic level, which may provide insights into the design and manufacture of collagenous biomaterials and the development of biomedical therapies for collagen-related diseases.
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Affiliation(s)
- Ming Tang
- School of Chemistry Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, 4001 Australia
| | - Xiaocong Wang
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
| | - Neha S Gandhi
- School of Mathematical Sciences, Queensland University of Technology, Brisbane 4001, Australia
| | | | - Kevin Burrage
- School of Mathematical Sciences, Queensland University of Technology, Brisbane 4001, Australia
- ARC Centre of Excellence for Mathematical and Statistical Frontiers, Queensland University of Technology, Brisbane 4001, Australia
| | - Robert J Woods
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
| | - YuanTong Gu
- School of Chemistry Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, 4001 Australia
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33
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Debele TA, Su WP. Polysaccharide and protein-based functional wound dressing materials and applications. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1809403] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Tilahun Ayane Debele
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No. 138, Sheng Li Road, Tainan 704, Taiwan
- Department of Medical Biochemistry, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Wen-Pin Su
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No. 138, Sheng Li Road, Tainan 704, Taiwan
- Departments of Oncology and Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
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34
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Xiao H, Cui Y, Wang Y, Li H, Chen G, Huang X, Shi B. Synergistic Combination of the Capillary Effect of Collagen Fibers and Size-Sieving Merits of Metal–Organic Frameworks for Emulsion Separation with High Flux. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01326] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hanzhong Xiao
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P.R. China
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, P.R. China
| | - Yiwen Cui
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P.R. China
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Yujia Wang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, P.R. China
| | - Huifang Li
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, P.R. China
| | - Guangyan Chen
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P.R. China
| | - Xin Huang
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P.R. China
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, P.R. China
| | - Bi Shi
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P.R. China
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, P.R. China
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35
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Zhu J, Madhurapantula RS, Kalyanasundaram A, Sabharwal T, Antipova O, Bishnoi SW, Orgel JPRO. Ultrastructural Location and Interactions of the Immunoglobulin Receptor Binding Sequence within Fibrillar Type I Collagen. Int J Mol Sci 2020; 21:ijms21114166. [PMID: 32545195 PMCID: PMC7312686 DOI: 10.3390/ijms21114166] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/05/2020] [Accepted: 06/08/2020] [Indexed: 12/30/2022] Open
Abstract
Collagen type I is a major constituent of animal bodies. It is found in large quantities in tendon, bone, skin, cartilage, blood vessels, bronchi, and the lung interstitium. It is also produced and accumulates in large amounts in response to certain inflammations such as lung fibrosis. Our understanding of the molecular organization of fibrillar collagen and cellular interaction motifs, such as those involved with immune-associated molecules, continues to be refined. In this study, antibodies raised against type I collagen were used to label intact D-periodic type I collagen fibrils and observed with atomic force microscopy (AFM), and X-ray diffraction (XRD) and immunolabeling positions were observed with both methods. The antibodies bind close to the C-terminal telopeptide which verifies the location and accessibility of both the major histocompatibility complex (MHC) class I (MHCI) binding domain and C-terminal telopeptide on the outside of the collagen fibril. The close proximity of the C-telopeptide and the MHC1 domain of type I collagen to fibronectin, discoidin domain receptor (DDR), and collagenase cleavage domains likely facilitate the interaction of ligands and receptors related to cellular immunity and the collagen-based Extracellular Matrix.
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Affiliation(s)
- Jie Zhu
- Institute of Biophysics, College of science, Northwest A&F University, Yangling 712100, China
- Department of Biology, Illinois Institute of Technology, Chicago, IL 60616, USA; (R.S.M.); (A.K.); (T.S.); (O.A.)
- Pritzker Institute of Biomedical Science and Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA
- Correspondence: (J.Z.); (J.P.R.O.O.)
| | - Rama S. Madhurapantula
- Department of Biology, Illinois Institute of Technology, Chicago, IL 60616, USA; (R.S.M.); (A.K.); (T.S.); (O.A.)
- Pritzker Institute of Biomedical Science and Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA
| | - Aruna Kalyanasundaram
- Department of Biology, Illinois Institute of Technology, Chicago, IL 60616, USA; (R.S.M.); (A.K.); (T.S.); (O.A.)
| | - Tanya Sabharwal
- Department of Biology, Illinois Institute of Technology, Chicago, IL 60616, USA; (R.S.M.); (A.K.); (T.S.); (O.A.)
| | - Olga Antipova
- Department of Biology, Illinois Institute of Technology, Chicago, IL 60616, USA; (R.S.M.); (A.K.); (T.S.); (O.A.)
- X-ray Science Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Sandra W. Bishnoi
- Department of Chemistry, Illinois Institute of Technology, Chicago, IL 60616, USA
| | - Joseph P. R. O. Orgel
- Department of Biology, Illinois Institute of Technology, Chicago, IL 60616, USA; (R.S.M.); (A.K.); (T.S.); (O.A.)
- Pritzker Institute of Biomedical Science and Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA
- Correspondence: (J.Z.); (J.P.R.O.O.)
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Sun X, He M, Wang L, Luo L, Wang J, Xiao J. Luminescent Biofunctional Collagen Mimetic Nanofibers. ACS OMEGA 2019; 4:16270-16279. [PMID: 31616804 PMCID: PMC6787889 DOI: 10.1021/acsomega.9b00740] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 07/19/2019] [Indexed: 06/10/2023]
Abstract
Collagen has long been one of the top targets for biomimetic design due to its superior structural and functional properties. Significant progress has been achieved to construct self-assembling peptides to mimic the fibrous nanostructure of native collagen, while it is still very demanding to fabricate peptide assemblies that can recapitulate both structural and biofunctional features of collagen. Herein, collagen-like peptides have been synthesized to contain negatively charged amino acids as the binding groups of lanthanide ions and the integrin-binding motif GFOGER. The simultaneous inclusion of negatively charged amino acids in the middle as well as at both terminals drives the peptides to self-assemble to form well-ordered nanofibers with distinct periodic banding patterns specifically mediated by lanthanide ions. The aggregation tendency and the morphology of the final assembled materials for the peptides are modulated in a pH-cooperative manner, which well mimics the pH-dependent fibrillogenesis of Type I collagen. The utilization of lanthanide ions in the system not only offers a convenient external stimulus but also functionalizes assembled materials with excellent luminescent features. Most notably, the lanthanide-triggered peptide assembled nanomaterials possess good cell adhesion properties, which resemble the biological function of collagen. This peptide-Ln3+ system provides a facile and potent strategy to generate nanofibers that mimic both the structural and functional properties of natural collagen. These novel pH-responsive, luminescent, and biofunctional collagen mimetic nanofibers open fascinating opportunities in the development of improved functional biomaterials in tissue engineering, drug delivery, and medical diagnostics.
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Affiliation(s)
- Xiuxia Sun
- State
Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, College
of Chemistry and Chemical Engineering, Lanzhou
University, Lanzhou 730000, P. R. China
| | - Manman He
- State
Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, College
of Chemistry and Chemical Engineering, Lanzhou
University, Lanzhou 730000, P. R. China
| | - Lang Wang
- State
Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, College
of Chemistry and Chemical Engineering, Lanzhou
University, Lanzhou 730000, P. R. China
| | - Liting Luo
- Key
laboratory of Magnetic Resonance in Biological Systems, State Key
Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese
Academy of Sciences, Wuhan 430071, China
| | - Jie Wang
- Key
laboratory of Magnetic Resonance in Biological Systems, State Key
Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese
Academy of Sciences, Wuhan 430071, China
| | - Jianxi Xiao
- State
Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, College
of Chemistry and Chemical Engineering, Lanzhou
University, Lanzhou 730000, P. R. China
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Peacock CJ, Kreplak L. Nanomechanical mapping of single collagen fibrils under tension. NANOSCALE 2019; 11:14417-14425. [PMID: 31334733 DOI: 10.1039/c9nr02644d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
At the most fundamental level, collagen fibrils are rope-like structures assembled from triple-helical collagen molecules. One key structural characteristic of the fibril is the 67 nm D-band pattern arising from the quarter-stagger packing of the molecules. Our current understanding of the structural changes induced by tensile loading of collagen fibrils comes mostly from atomistic molecular dynamics simulations and tissue level experiments. Tensile testing of individual fibrils is an upcoming field of investigation, and thus far structural analysis has always taken place after the fibrils have been ruptured or strained and subsequently dried. There is therefore a gap in understanding how the structure of collagen fibrils transforms under tension, and how this reorganization affects the functionality of collagen fibrils within tissues. In this study, atomic force microscopy based nanomechanical mapping is introduced to image hydrated collagen fibrils absorbed to an elastic substrate. Upon stretching the substrate between 5 and 30%, we observe a radial stiffening consistent with the fibrils being under tension. This is associated with an increase in D-band length. In addition the indentation modulus contrast associated with the D-band pattern increases linearly with D-band strain. These results provide direct confirmation of, and new information on the axially inhomogeneous structural response of collagen fibrils to applied tension as previously proposed on the basis of X-ray scattering experiments on stretched tissues. Furthermore our approach opens the road for studying the structural impacts of tension on cell-matrix interactions at the molecular level.
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Affiliation(s)
- Chris J Peacock
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada.
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Orgel JPRO, Madhurapantula RS. A structural prospective for collagen receptors such as DDR and their binding of the collagen fibril. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2019; 1866:118478. [PMID: 31004686 DOI: 10.1016/j.bbamcr.2019.04.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 04/11/2019] [Accepted: 04/12/2019] [Indexed: 12/13/2022]
Abstract
The structure of the collagen fibril surface directly effects and possibly assists the management of collagen receptor interactions. An important class of collagen receptors, the receptor tyrosine kinases of the Discoidin Domain Receptor family (DDR1 and DDR2), are differentially activated by specific collagen types and play important roles in cell adhesion, migration, proliferation, and matrix remodeling. This review discusses their structure and function as it pertains directly to the fibrillar collagen structure with which they interact far more readily than they do with isolated molecular collagen. This prospective provides further insight into the mechanisms of activation and rational cellular control of this important class of receptors while also providing a comparison of DDR-collagen interactions with other receptors such as integrin and GPVI. When improperly regulated, DDR activation can lead to abnormal cellular proliferation activities such as in cancer. Hence how and when the DDRs associate with the major basis of mammalian tissue infrastructure, fibrillar collagen, should be of keen interest.
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Affiliation(s)
- Joseph P R O Orgel
- Departments of Biology and Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA.
| | - Rama S Madhurapantula
- Departments of Biology and Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA
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Rowley AT, Nagalla RR, Wang S, Liu WF. Extracellular Matrix-Based Strategies for Immunomodulatory Biomaterials Engineering. Adv Healthc Mater 2019; 8:e1801578. [PMID: 30714328 DOI: 10.1002/adhm.201801578] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/08/2019] [Indexed: 12/14/2022]
Abstract
The extracellular matrix (ECM) is a complex and dynamic structural scaffold for cells within tissues and plays an important role in regulating cell function. Recently it has become appreciated that the ECM contains bioactive motifs that can directly modulate immune responses. This review describes strategies for engineering immunomodulatory biomaterials that utilize natural ECM-derived molecules and have the potential to harness the immune system for applications ranging from tissue regeneration to drug delivery. A top-down approach utilizes full-length ECM proteins, including collagen, fibrin, or hyaluronic acid-based materials, as well as matrices derived from decellularized tissue. These materials have the benefit of maintaining natural conformation and structure but are often heterogeneous and encumber precise control. By contrast, a bottom-up approach leverages immunomodulatory domains, such as Arg-Gly-Asp (RGD), matrix metalloproteinase (MMP)-sensitive peptides, or leukocyte-associated immunoglobulin-like receptor-1(LAIR-1) ligands, by incorporating them into synthetic materials. These materials have tunable control over immune cell functions and allow for combinatorial approaches. However, the synthetic approach lacks the full natural context of the original ECM protein. These two approaches provide a broad range of engineering techniques for immunomodulation through material interactions and hold the potential for the development of future therapeutic applications.
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Affiliation(s)
- Andrew T. Rowley
- Department of Chemical and Biomolecular EngineeringUniversity of California Irvine CA 92697 USA
| | - Raji R. Nagalla
- Department of Biomedical EngineeringUniversity of California Irvine CA 92697 USA
| | - Szu‐Wen Wang
- Department of Chemical and Biomolecular EngineeringUniversity of California Irvine CA 92697 USA
- Department of Biomedical EngineeringUniversity of California Irvine CA 92697 USA
- Department of Materials Science and EngineeringUniversity of California Irvine CA 92697 USA
| | - Wendy F. Liu
- Department of Chemical and Biomolecular EngineeringUniversity of California Irvine CA 92697 USA
- Department of Biomedical EngineeringUniversity of California Irvine CA 92697 USA
- The Edwards Lifesciences Center for Advanced Cardiovascular TechnologyUniversity of California Irvine CA 92697 USA
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Golaraei A, Mirsanaye K, Ro Y, Krouglov S, Akens MK, Wilson BC, Barzda V. Collagen chirality and three-dimensional orientation studied with polarimetric second-harmonic generation microscopy. JOURNAL OF BIOPHOTONICS 2019; 12:e201800241. [PMID: 30288949 DOI: 10.1002/jbio.201800241] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 09/20/2018] [Indexed: 05/18/2023]
Abstract
Polarization-dependent second-harmonic generation (P-SHG) microscopy is used to characterize molecular nonlinear optical properties of collagen and determine a three-dimensional (3D) orientation map of collagen fibers within a pig tendon. C6 symmetry is used to determine the nonlinear susceptibility tensor components ratios in the molecular frame of reference χzzz2/χzxx2 and χxyz2/χzxx2 , where the latter is a newly extracted parameter from the P-SHG images and is related to the chiral structure of collagen. The χxyz2/χzxx2 is observed for collagen fibers tilted out of the image plane, and can have positive or negative values, revealing the relative polarity of collagen fibers within the tissue. The P-SHG imaging was performed using a linear polarization-in polarization-out (PIPO) method on thin sections of pig tendon cut at different angles. The nonlinear chiral properties of collagen can be used to construct the 3D organization of collagen in the tissue and determine the orientation-independent molecular susceptibility ratios of collagen fibers in the molecular frame of reference.
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Affiliation(s)
- Ahmad Golaraei
- Department of Physics, University of Toronto, Ontario, Canada
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Ontario, Canada
- Princess Margaret Cancer Centre, University Health Network, Ontario, Canada
| | - Kamdin Mirsanaye
- Department of Physics, University of Toronto, Ontario, Canada
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Ontario, Canada
| | - Yeji Ro
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Ontario, Canada
| | - Serguei Krouglov
- Department of Physics, University of Toronto, Ontario, Canada
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Ontario, Canada
| | - Margarete K Akens
- Techna Institute, University Health Network, Ontario, Canada
- Department of Surgery, University of Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Ontario, Canada
| | - Brian C Wilson
- Princess Margaret Cancer Centre, University Health Network, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Ontario, Canada
| | - Virginijus Barzda
- Department of Physics, University of Toronto, Ontario, Canada
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Ontario, Canada
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Zitnay JL, Weiss JA. Load transfer, damage, and failure in ligaments and tendons. J Orthop Res 2018; 36:3093-3104. [PMID: 30175857 PMCID: PMC6454883 DOI: 10.1002/jor.24134] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 08/14/2018] [Indexed: 02/04/2023]
Abstract
The function of ligaments and tendons is to support and transmit loads applied to the musculoskeletal system. These tissues are often able to perform their function for many decades; however, connective tissue disease and injury can compromise ligament and tendon integrity. A range of protein and non-protein constituents, combined in a complex structural hierarchy from the collagen molecule to the tissue and covering nanometer to centimeter length scales, govern tissue function, and impart characteristic non-linear material behavior. This review summarizes the structure of ligaments and tendons, the roles of their constituent components for load transfer across the hierarchy of structure, and the current understanding of how damage occurs in these tissues. Disease and injury can alter the constituent make-up and structural organization of ligaments and tendons, affecting tissue function, while also providing insight to the role and interactions of individual constituents. The studies and techniques presented here have helped to understand the relationship between tissue constituents and the physical mechanisms (e.g., stretching, sliding) that govern material behavior at and between length scales. In recent years, new techniques have been developed to probe ever smaller length scales and may help to elucidate mechanisms of load transfer and damage and the molecular constituents involved in the in the earliest stages of ligament and tendon damage. A detailed understanding of load transfer and damage from the molecular to the tissue level may elucidate targets for the treatment of connective tissue diseases and inform practice to prevent and rehabilitate ligament and tendon injuries. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:3093-3104, 2018.
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Affiliation(s)
- Jared L. Zitnay
- Department of Bioengineering, and Scientific Computing and Imaging Institute University of Utah
| | - Jeffrey A. Weiss
- Department of Bioengineering, and Scientific Computing and Imaging Institute University of Utah,Department of Orthopaedics, University of Utah
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Zhu J, Hoop CL, Case DA, Baum J. Cryptic binding sites become accessible through surface reconstruction of the type I collagen fibril. Sci Rep 2018; 8:16646. [PMID: 30413772 PMCID: PMC6226522 DOI: 10.1038/s41598-018-34616-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 10/12/2018] [Indexed: 01/08/2023] Open
Abstract
Collagen fibril interactions with cells and macromolecules in the extracellular matrix drive numerous cellular functions. Binding motifs for dozens of collagen-binding proteins have been determined on fully exposed collagen triple helical monomers. However, when the monomers are assembled into the functional collagen fibril, many binding motifs become inaccessible, and yet critical cellular processes occur. Here, we have developed an early stage atomic model of the smallest repeating unit of the type I collagen fibril at the fibril surface that provides a novel framework to address questions about these functionally necessary yet seemingly obstructed interactions. We use an integrative approach by combining molecular dynamics (MD) simulations with atomic force microscopy (AFM) experiments and show that reconstruction of the collagen monomers within the complex fibril play a critical role in collagen interactions. In particular, the fibril surface shows three major conformational changes, which allow cryptic binding sites, including an integrin motif involved in platelet aggregation, to be exposed. The observed dynamics and reconstruction of the fibril surface promote its role as a “smart fibril” to keep certain binding sites cryptic, and to allow accessibility of recognition domains when appropriate.
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Affiliation(s)
- Jie Zhu
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, 08854, USA
| | - Cody L Hoop
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, 08854, USA
| | - David A Case
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, 08854, USA
| | - Jean Baum
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, 08854, USA.
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Jiang H, Wang M, Ye J, Liu J, Wang Z, Xu Y, Ye D, Wan J. Serum Levels of Complement-C1q/Tumor Necrosis Factor-Related Protein-3 Decreased in Patients With Acute Aortic Dissection. Am J Cardiol 2018; 122:1244-1248. [PMID: 30072126 DOI: 10.1016/j.amjcard.2018.06.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/11/2018] [Accepted: 06/15/2018] [Indexed: 02/06/2023]
Abstract
Complement-C1q/tumor necrosis factor-related protein-3 (CTRP3) is one kind of adipocytokines and has been reported to play key roles in many cardiovascular diseases by regulating inflammation. Inflammation was reported to be involved in the development of acute aortic dissection (AAD). The purpose of this study was to investigate whether serum levels of CTRP3 were associated with AAD. The serum was collected from 108 participants, including 60 patients with AAD and 32 patients with hypertension, as well as 16 healthy subjects. Serum levels of CTRP3, interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) were measured using enzyme-linked immunosorbent assay kits. Decreased serum levels of CTRP3 were found in AAD patients compared with hypertension and healthy subjects (35.89 ± 11.26 vs 52.60 ± 13.90 and 51.71 ± 18.64 ng/mL, p < 0.001, respectively). IL-6 and TNF-α levels were significantly higher in AAD patients than those in hypertension and healthy subjects (IL-6: 31.33 ± 15.18 vs 13.13 ± 8.63 and 9.40 ± 6.27 pg/mL, p < 0.001; TNF-α: 36.87 ± 11.16 vs 29.66 ± 5.12 and 22.93 ± 7.18 pg/mL, p < 0.001, respectively). In AAD, CTRP3 levels showed a negative correlation with IL-6 and TNF-α levels respectively (r = -0.508, p < 0.001; r = -0.393, p = 0.002, respectively). In conclusion, decreased levels of CTRP3 may be associated with the development of AAD.
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Affiliation(s)
- Huimin Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute of Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Menglong Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute of Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Jing Ye
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute of Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Jianfang Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute of Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Zhen Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute of Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Yao Xu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute of Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Di Ye
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute of Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Jun Wan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute of Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan, China.
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Multifaceted Interweaving Between Extracellular Matrix, Insulin Resistance, and Skeletal Muscle. Cells 2018; 7:cells7100148. [PMID: 30249008 PMCID: PMC6211053 DOI: 10.3390/cells7100148] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/07/2018] [Accepted: 09/17/2018] [Indexed: 02/06/2023] Open
Abstract
The skeletal muscle provides movement and support to the skeleton, controls body temperature, and regulates the glucose level within the body. This is the core tissue of insulin-mediated glucose uptake via glucose transporter type 4 (GLUT4). The extracellular matrix (ECM) provides integrity and biochemical signals and plays an important role in myogenesis. In addition, it undergoes remodeling upon injury and/or repair, which is also related to insulin resistance (IR), a major cause of type 2 diabetes (T2DM). Altered signaling of integrin and ECM remodeling in diet-induced obesity is associated with IR. This review highlights the interweaving relationship between the ECM, IR, and skeletal muscle. In addition, the importance of the ECM in muscle integrity as well as cellular functions is explored. IR and skeletal muscle ECM remodeling has been discussed in clinical and nonclinical aspects. Furthermore, this review considers the role of ECM glycation and its effects on skeletal muscle homeostasis, concentrating on advanced glycation end products (AGEs) as an important risk factor for the development of IR. Understanding this complex interplay between the ECM, muscle, and IR may improve knowledge and help develop new ideas for novel therapeutics for several IR-associated myopathies and diabetes.
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Reznikov N, Bilton M, Lari L, Stevens MM, Kröger R. Fractal-like hierarchical organization of bone begins at the nanoscale. Science 2018; 360:360/6388/eaao2189. [PMID: 29724924 DOI: 10.1126/science.aao2189] [Citation(s) in RCA: 257] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 03/08/2018] [Indexed: 01/01/2023]
Abstract
The components of bone assemble hierarchically to provide stiffness and toughness. However, the organization and relationship between bone's principal components-mineral and collagen-has not been clearly elucidated. Using three-dimensional electron tomography imaging and high-resolution two-dimensional electron microscopy, we demonstrate that bone mineral is hierarchically assembled beginning at the nanoscale: Needle-shaped mineral units merge laterally to form platelets, and these are further organized into stacks of roughly parallel platelets. These stacks coalesce into aggregates that exceed the lateral dimensions of the collagen fibrils and span adjacent fibrils as continuous, cross-fibrillar mineralization. On the basis of these observations, we present a structural model of hierarchy and continuity for the mineral phase, which contributes to the structural integrity of bone.
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Affiliation(s)
- Natalie Reznikov
- Department of Materials, Department of Bioengineering and Institute for Biomedical Engineering, Faculty of Engineering, Imperial College London, London, UK
| | - Matthew Bilton
- Department of Physics, University of York, Heslington, York, UK.,4D LABS, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Leonardo Lari
- Department of Physics, University of York, Heslington, York, UK.,York JEOL Nanocentre, Science Park, York, UK
| | - Molly M Stevens
- Department of Materials, Department of Bioengineering and Institute for Biomedical Engineering, Faculty of Engineering, Imperial College London, London, UK.
| | - Roland Kröger
- Department of Physics, University of York, Heslington, York, UK.
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47
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Goldberga I, Li R, Duer MJ. Collagen Structure-Function Relationships from Solid-State NMR Spectroscopy. Acc Chem Res 2018; 51:1621-1629. [PMID: 29931970 DOI: 10.1021/acs.accounts.8b00092] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The extracellular matrix of a tissue is as important to life as the cells within it. Its detailed molecular structure defines the environment of a tissue's cells and thus their properties, including differentiation and metabolic status. Collagen proteins are the major component of extracellular matrices. Self-assembled collagen fibrils provide both specific mechanical properties to handle external stresses on tissues and, at the molecular level, well-defined protein binding sites to interact with cells. How the cell-matrix interactions are maintained against the stresses on the tissue is an important and as yet unanswered question. Similarly, how collagen molecular and fibrillar structures change in aging and disease is a crucial open question. Solid-state NMR spectroscopy offers insight into collagen molecular conformation in intact in vivo and in vitro tissues, and in this Account we review how NMR spectroscopy is beginning to provide answers to these questions. In vivo 13C,15N labeling of the extracellular matrix has given insight into collagen molecular dynamics and generated multidimensional NMR "fingerprints" of collagen molecular structure that allow comparison of local collagen conformation between tissues. NMR studies have shown that charged collagen residues (Lys, Arg) adopt extended-side-chain conformations in the fibrillar structure to facilitate charge-charge interactions between neighboring collagen molecules, while hydrophobic residues (Leu, Ile) fold along the collagen molecular axis to minimize the hydrophobic area exposed to surrounding water. Detailed NMR and molecular modeling work has shown that the abundant Gly-Pro-Hyp (Hyp = hydroxyproline) triplets in collagen triple helices confer well-defined flexibility because the proline is conformationally metastable, in contrast to the expectation that these triplets confer structural rigidity. The alignment of the Gly-Pro-Hyp triplets within the fibril structure means that the Gly-Pro-Hyp molecular flexibility generates fibril flexibility. The fibrillar bands of Gly-Pro-Hyp are highly correlated with collagen ligand binding sites, leading to the hypothesis that the fibril alignment of Gly-Pro-Hyp triplets is essential to protect collagen-ligand binding against external stresses on the tissue. Non-enzymatic chemistry between collagen side-chain amine groups (Lys, Arg) and reducing sugars-glycation-is an important source of matrix structural change in aging and disease. Glycation leads to stiffening of collagen fibrils, which is widely speculated to be the result of intermolecular cross-linking. The chemistry of non-enzymatic glycation has been extensively detailed through NMR studies and has been shown to lead to side-chain modifications as the majority reaction products, rather than intermolecular cross-links, with resultant molecular misalignment in the fibrils. Thus, a picture is beginning to emerge in which collagen glycation causes stiffening through misalignment of collagen molecular flexible regions rather than intermolecular cross-linking, meaning that new thinking is needed on how to alleviate collagen structural changes in aging and disease.
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Affiliation(s)
- Ieva Goldberga
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Rui Li
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Melinda J. Duer
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
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Steered molecular dynamics characterization of the elastic modulus and deformation mechanisms of single natural tropocollagen molecules. J Mech Behav Biomed Mater 2018; 86:359-367. [PMID: 30015207 DOI: 10.1016/j.jmbbm.2018.07.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 06/30/2018] [Accepted: 07/04/2018] [Indexed: 11/21/2022]
Abstract
Collagen is a common structural protein, providing mechanical integrity for various vertebrate connective tissues such as cartilage and bone. The mechanical behaviours of these tissues under physical stimulations are controlled by the hierarchical structure of collagen and its interactions with other extracellular matrix molecules. However, the mechanical properties and deformation mechanisms of natural collagen under physiological loading rates at the molecular level are not fully understood. In this study, comprehensive steered molecular dynamics (SMD) simulations were performed on the 2nd intact overlap region (d2ol) and the 2nd intact D-period (d2olgp) of an in-situ characterized collagen molecule, under a large range of strain rates (6.5 × 106% s-1 to 1.3 × 1012% s-1). The results show that, depending on the applied strain rates, tropocollagen molecules unfold in different ways. Particularly, at high and intermediate strain rates, the number of inter-chain hydrogen bonds decreases rapidly even at small deformations, leading to a dramatic increase in the force. This results in an increase in the estimated Young's modulus of collagen triple helices as the deformation rate goes up, which, together with the nonlinear mechanical behaviour, explains the broad range of the Young's modulus for collagen model peptides reported in earlier SMD studies. Atomistic-level analyses indicate that the elastic modulus of single tropocollagen molecules decreases as the strain rate becomes smaller. However, for strain rates below 1.3 × 108% s-1, the tangent Young's modulus of d2ol (d2olgp) converges to approximately 3.2 GPa (3.4 GPa), at the strain of 10.5% (12%) when the segment is fully uncrimped. Furthermore, for strain rates under 1.3 × 108% s-1, d2ol and d2olgp show identical deformation mechanisms (unwinding, uncoiling and backbone stretching), but the corresponding strain ranges are different. This study will aid in future studies on characterizing the mechanical properties of collagen molecules and collagen-like peptides by indicating the proper pulling strain rates and how to determine the suitable strain range used for evaluating the elastic modulus.
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Ganesan VV, Dhanasekaran M, Thangavel N, Dhathathreyan A. Elastic compliance of fibrillar assemblies in type I collagen. Biophys Chem 2018; 240:15-24. [PMID: 29857170 DOI: 10.1016/j.bpc.2018.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/17/2018] [Accepted: 05/22/2018] [Indexed: 11/17/2022]
Abstract
Fibrillary assemblies of Type I collagen find important applications in tissue engineering and as matrices for biophysical studies. The mechanical and structural properties of these structures are governed by factors such as protein concentration, temperature, pH and ionic strength. This study reports on an impedance based analysis of the elastic compliance of fibrillary assemblies of Type I collagen using quartz crystal microbalance with dissipation (QCM-D) at a fundamental frequency of 5 MHz and overtones (n = 3,5,7,9,11). Here, In situ partial fibrillation of the adsorbing collagen followed by its fibrillary assemblies on hydrophilic gold coated quartz surface have been crosslinked using Gallic acid (GA), Chromium (III) gallate (Cr-GA), Catechin (Cat), Tetrakis(hydroxymethyl)phosphonium sulfate (THPS) and Oxazolidine (Ox). This approach allows direct comparison of how viscoelastic properties track the structural evolution of the fiber and network length scales. The collagen crosslinking shows significant positive impact on the protein's mechanical behaviour and on the type of crosslinking agents used. The elastic modulus increases as collagen <GA < THPS < Cr-GA < Cat < Ox. Atomic force microscopic studies on the adsorbed collagen after cross linking confirmed the presence of fibrous assemblies. The results indicate stabilization and reinforcement through strong physical entanglement between the molecules of collagen as well as chemical interaction between collagen matrix and fibrils during cross linking. The elastic compliance evaluated from ΔDissipation/Δfreq. from QCM-D showed that cross linking with GA, Cr-GA and Ox resulted in flexible fibrillary network while agents like THPS and Cat showed elastic moduli similar to that of pure collagen. Results suggest that optimal collagen-crosslinking agent ratio and degree of crosslinking of collagen can help tailor the mechanical properties for specific applications in design of bio-materials of these composites.
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Fidler AL, Boudko SP, Rokas A, Hudson BG. The triple helix of collagens - an ancient protein structure that enabled animal multicellularity and tissue evolution. J Cell Sci 2018; 131:jcs203950. [PMID: 29632050 PMCID: PMC5963836 DOI: 10.1242/jcs.203950] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The cellular microenvironment, characterized by an extracellular matrix (ECM), played an essential role in the transition from unicellularity to multicellularity in animals (metazoans), and in the subsequent evolution of diverse animal tissues and organs. A major ECM component are members of the collagen superfamily -comprising 28 types in vertebrates - that exist in diverse supramolecular assemblies ranging from networks to fibrils. Each assembly is characterized by a hallmark feature, a protein structure called a triple helix. A current gap in knowledge is understanding the mechanisms of how the triple helix encodes and utilizes information in building scaffolds on the outside of cells. Type IV collagen, recently revealed as the evolutionarily most ancient member of the collagen superfamily, serves as an archetype for a fresh view of fundamental structural features of a triple helix that underlie the diversity of biological activities of collagens. In this Opinion, we argue that the triple helix is a protein structure of fundamental importance in building the extracellular matrix, which enabled animal multicellularity and tissue evolution.
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Affiliation(s)
- Aaron L Fidler
- Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Sergei P Boudko
- Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Antonis Rokas
- Department of Biological Sciences, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Billy G Hudson
- Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Department of Medical Education and Administration, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Department of Biochemistry, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
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