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Ladeira B, Gomes M, Wei K, Custódio C, Mano J. Supramolecular assembly of multi-purpose tissue engineering platforms from human extracellular matrix. Biomaterials 2025; 320:123270. [PMID: 40132356 DOI: 10.1016/j.biomaterials.2025.123270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2024] [Revised: 02/07/2025] [Accepted: 03/17/2025] [Indexed: 03/27/2025]
Abstract
Recapitulating the biophysical and biochemical complexity of the extracellular matrix (ECM) remains a major challenge in tissue engineering. Hydrogels derived from decellularized ECM provide a unique opportunity to replicate the architecture and bioactivity of native ECM, however, they exhibit limited long-term stability and mechanical integrity. In turn, materials assembled through supramolecular interactions have achieved considerable success in replicating the dynamic biophysical properties of the ECM. Here, we merge both methodologies by promoting the supramolecular assembly of decellularized human amniotic membrane (hAM), mediated by host-guest interactions between hAM proteins and acryloyl-β-cyclodextrin (AcβCD). Photopolymerization of the cyclodextrins results in the formation of soft hydrogels that exhibit tunable stress relaxation and strain-stiffening. Disaggregation of bulk hydrogels yields an injectable granular material that self-reconstitutes into shape-adaptable bulk hydrogels, supporting cell delivery and promoting neovascularization. Additionally, cells encapsulated within bulk hydrogels sense and respond to the biophysical properties of the surrounding matrix, as early cell spreading is favored in hydrogels that exhibit greater susceptibility to applied stress, evidencing proper cell-matrix interplay. Thus, this system is shown to be a promising substitute for native ECM in tissue repair and modelling.
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Affiliation(s)
- Bruno Ladeira
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Maria Gomes
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Kongchang Wei
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, St. Gallen, Switzerland; Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biointerfaces, St. Gallen, Switzerland
| | - Catarina Custódio
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - João Mano
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.
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Yin Q, Shi H, Zhao Y, Yu G, Wu H, Xia G, Yang T. Physiochemical and functional properties of gelatin obtained from frigate mackerel ( Auxis thazard), skipjack tuna ( Katsuwonus pelamis), Longtail tuna ( Thunnus tonggol) and yellowfin tuna ( Thunnus albacares) skin. Food Chem X 2025; 27:102360. [PMID: 40165813 PMCID: PMC11957492 DOI: 10.1016/j.fochx.2025.102360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2024] [Revised: 03/01/2025] [Accepted: 03/07/2025] [Indexed: 04/02/2025] Open
Abstract
This study conducted a systematic investigation into the physicochemical and functional properties of gelatin extracted through alkaline methods from the skins of four commercially significant tuna species: frigate mackerel (Auxis thazard), skipjack tuna (Katsuwonus pelamis), longtail tuna (Thunnus tonggol), and yellowfin tuna (Thunnus albacares). Comparative analyses revealed notable species-specific variations in gelatin yield, amino acid composition, molecular weight distribution, and functional performance. Notably, yellowfin tuna skin gelatin (YSG) exhibited the highest melting point (28.09 °C), gel strength (271 g), and proline content (14.3 %), along with superior foaming capacity (20.43 %), water retention, and emulsification stability. Molecular weight profiles obtained via SDS-PAGE confirmed the presence of α- and β-chains characteristic of type I collagen, with YSG demonstrating enhanced structural integrity and thermal stability attributed to its elevated proline content. Additionally, Fourier-transform infrared spectroscopy (FTIR) and circular dichroism (CD) analyses indicated stronger hydrogen bonding and preservation of the triple-helix structure in YSG. While longtail tuna yielded the highest extraction rate (21.5 %), skipjack tuna showed the highest protein content (86.7 %). In contrast, frigate mackerel gelatin displayed darker coloration (ΔE* = 53.09) due to residual pigments. Rheological assessments highlighted YSG's optimal viscoelasticity and melting behavior, aligning with its robust interfacial properties. These findings underscore the potential of yellowfin tuna skin gelatin as a viable alternative to mammalian gelatin in food and biomedical applications, offering enhanced functional performance while valorizing underutilized fishery by-products.
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Affiliation(s)
- Qinghe Yin
- School of Pharmacy, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Hainan Medical University, Haikou 571199, China
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Key Laboratory of Seafood Processing of Haikou, School of Food Science and Technology, Hainan University, Hainan 570228, China
| | - Haohao Shi
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Key Laboratory of Seafood Processing of Haikou, School of Food Science and Technology, Hainan University, Hainan 570228, China
| | - Yongqiang Zhao
- Sanya Tropical Fisheries Research Institute, Sanya 572018, China
| | - Gang Yu
- Sanya Tropical Fisheries Research Institute, Sanya 572018, China
| | - Haohao Wu
- College of Food Science and Technology, Ocean University of China, Qingdao 266000, China
| | - Guanghua Xia
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Key Laboratory of Seafood Processing of Haikou, School of Food Science and Technology, Hainan University, Hainan 570228, China
- Collaborative Innovation Center of Provincial and Ministerial Co-Construction for Marine Food Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Tao Yang
- School of Pharmacy, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Hainan Medical University, Haikou 571199, China
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Edmonds H, Mukherjee SS, Holcombe B, Yeh K, Bhargava R, Ghosh A. Quantification of Protein Secondary Structures from Discrete Frequency Infrared Images Using Machine Learning. APPLIED SPECTROSCOPY 2025:37028251325553. [PMID: 40165369 DOI: 10.1177/00037028251325553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/02/2025]
Abstract
Discrete frequency infrared (IR) imaging is an exciting experimental technique that has shown promise in various applications in biomedical science. This technique often involves acquiring IR absorptive images at specific frequencies of interest that enable pathologically relevant chemical contrast. However, certain applications, such as tracking the spatial variations in protein secondary structure of tissue specimens, necessary for the characterization of neurodegenerative diseases, require deeper analysis of spectral data. In such cases, the conventional analytical approach involves band fitting the hyperspectral data to extract the relative populations of different structures through their fitted areas under the curve (AUC). While Gaussian spectral fitting for one spectrum is viable, expanding that to an image with millions of pixels, as often applicable for tissue specimens, becomes a computationally expensive process. Alternatives like principal component analysis (PCA) are less structurally interpretable and incompatible with sparsely sampled data. Furthermore, this detracts from the key advantages of discrete frequency imaging by necessitating the acquisition of more finely sampled spectral data that is optimal for curve fitting, resulting in significantly longer data acquisition times, larger datasets, and additional computational overhead. In this work, we demonstrate that a simple two-step regressive neural network model can be utilized to mitigate these challenges and employ discrete frequency imaging for retrieving the results from band fitting without significant loss of fidelity. Our model reduces the data acquisition time nearly six-fold by requiring only seven wavenumbers to accurately interpolate spectral information at a higher resolution and subsequently using the upscaled spectra to accurately predict the component AUCs, which is more than 3000 times faster than spectral fitting. Our approach thus drastically cuts down the data acquisition and analysis time and predicts key differences in protein structure that can be vital towards broadening potential applications of discrete frequency imaging.
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Affiliation(s)
- Harrison Edmonds
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 354127, USA
| | - Sudipta S Mukherjee
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Brooke Holcombe
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 354127, USA
| | - Kevin Yeh
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Rohit Bhargava
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
- Department of Bioengineering, University of Illinois Urbana- Champaign, Urbana, Illinois 61801, USA
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
- Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
- Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
- Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Ayanjeet Ghosh
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 354127, USA
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Mansour A, Jabbour Z, Alsheghri A, Elhadad A, Berridi KR, Moussa H, Ramirez-Garcialuna JL, Tamimi I, Santos dos Santos S, Henderson J, Song J, Tamimi F. Prolonged Impact of Bisphosphonates and Glucocorticoids on Bone Mechanical Properties. Pharmaceuticals (Basel) 2025; 18:164. [PMID: 40005978 PMCID: PMC11858856 DOI: 10.3390/ph18020164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2024] [Revised: 01/10/2025] [Accepted: 01/18/2025] [Indexed: 02/27/2025] Open
Abstract
Background: This study aimed at investigating the prolonged effects of glucocorticoids and bisphosphonates on bone. Methods: Six-to-eight-month-old skeletally mature male Sprague Dawley rats were randomized to receive a cancer therapy combination of zoledronic acid (ZA = 0.13 mg/kg) and dexamethasone (DX = 3.8 mg/kg) (treatment group, n = 10) or sterile phosphate buffer saline solution (control group, n = 10). The rats received weekly intraperitoneal injections for 8 weeks, which were stopped 6 weeks before euthanasia. Mineralized bone samples were characterized by three-point bending tests, micro-CT imaging, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). Bone collagen was assessed using tensile tests on the demineralized bones and attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy on mineralized and demineralized bones. Results: The samples in the treatment group showed increased tibial cortical thickness, mineral crystal size, and toughness. Analyses of demineralized tibiae revealed decreased collagen tensile strength in the experimental group. The spectroscopic and TGA/DSC analyses showed that the ZA + DX treatment increased the collagen amide I 1660/1690 cm-1 area ratio and collagen denaturalization temperature, indicating a higher level of collagen cross-linking. Conclusions: Bisphosphonates and glucocorticoids led to prolonged changes in the mechanical properties of bone as a result of increased cortical thickness, increased crystal size, and the deterioration of collagen quality.
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Affiliation(s)
- Alaa Mansour
- Private Dental Practice, Ottawa, ON K1P 5Z9, Canada;
| | - Zaher Jabbour
- School of Dentistry, University of California, Los Angeles, CA 90095, USA
| | - Ammar Alsheghri
- Mechanical Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia;
- Interdisciplinary Research Center for Biosystems and Machines, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia
| | - Amir Elhadad
- College of Dental Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar;
| | - Karla R. Berridi
- Bone Engineering Labs, Injury Recovery Repair Program, Research Institute McGill University Health Centre, Montreal, QC H4A 3J1, Canada; (K.R.B.); (J.L.R.-G.); (J.H.)
- Experimental Surgery, Faculty of Medicine, McGill University, Montreal, QC H3A 0G4, Canada
| | - Hanan Moussa
- Faculty of Dentistry, McGill University, Montreal, QC H3A 0G4, Canada;
- Faculty of Dentistry, Benghazi University, Benghazi 435C W26, Libya
| | - Jose Luis Ramirez-Garcialuna
- Bone Engineering Labs, Injury Recovery Repair Program, Research Institute McGill University Health Centre, Montreal, QC H4A 3J1, Canada; (K.R.B.); (J.L.R.-G.); (J.H.)
- Experimental Surgery, Faculty of Medicine, McGill University, Montreal, QC H3A 0G4, Canada
| | - Iskandar Tamimi
- Orthopedic Surgery Department, Regional University Hospital of Málaga, 29010 Málaga, Spain;
| | | | - Janet Henderson
- Bone Engineering Labs, Injury Recovery Repair Program, Research Institute McGill University Health Centre, Montreal, QC H4A 3J1, Canada; (K.R.B.); (J.L.R.-G.); (J.H.)
- Experimental Surgery, Faculty of Medicine, McGill University, Montreal, QC H3A 0G4, Canada
| | - Jun Song
- Department of Mining and Materials Engineering, McGill University, Montreal, QC H3A 0G4, Canada;
| | - Faleh Tamimi
- College of Dental Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar;
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Motta de Bortoli A, Cassago Nascimento MH, Guerrero Daboin BE, Bobbio de Brito B, Recla Pessotti L, Filgueiras PR, Bolsoni Lopes A, Garrone Barauna V, Kenji Haraguchi F. Application of fourier transform infrared vibrational spectroscopy in identifying early biochemical changes in lipid profiles of individuals undergoing Roux-en-y gastric bypass. BMC Surg 2025; 25:33. [PMID: 39833830 PMCID: PMC11748525 DOI: 10.1186/s12893-024-02707-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2024] [Accepted: 12/09/2024] [Indexed: 01/22/2025] Open
Abstract
BACKGROUND Fourier transform infrared spectroscopy (FTIR) is an analytical technique increasingly applied in biological analysis. This study investigates the application of FTIR to identify early biochemical changes, particularly in lipid profiles, in individuals undergoing Roux-en-Y gastric bypass (RYGB). METHODS An observational study involving patients from a university hospital's Bariatric and Metabolic Surgery Program, with evaluations performed before (T0) and two months after (T1) RYGB. Biochemical parameters, anthropometric data, and body composition were assessed. FTIR spectra were pre-processed and analyzed using Principal Component Analysis and Partial Least Squares Discriminant Analysis. The normality of the data was evaluated using the Kolmogorov-Smirnov test, followed by paired T-tests or Wilcoxon tests as appropriate. Spearman correlation analysis of spectral information with biochemical parameters was also performed. A significance level of p < 0.05 was set for all tests. The university hospital's Research Ethics Committee approved the study (protocol CAAE 59075722.7.0000.5071). RESULTS The study evaluated 29 individuals (86.2% female) with a mean age of 41.2 ± 7.8 years. Significant differences were observed in anthropometric parameters and body composition (p < 0.001). Additionally, early improvements in the lipid profile were noted, with significant decreases in triglycerides, total cholesterol, and LDL cholesterol (p < 0.05) just two months post-surgery. FTIR identified correlations between biochemical parameters and specific spectral regions at T0 and T1. Notably, serum triglycerides showed a significant correlation with the lipid-specific spectral region (1796-1685 cm- 1) at both time points (p < 0.05). CONCLUSION FTIR can effectively monitor biochemical changes in RYGB surgery patients. The spectral range associated with lipid functional groups (1796 -1675 cm⁻¹) showed a significant relationship with serum triglyceride levels before and after RYGB. Additionally, various biochemical parameters exhibited strong correlations with other spectral regions, implying that the serum spectral profile can indicate biochemical variations at different post-surgery stages. TRIAL REGISTRATION Brazilian Registry of Clinical Trials (Rebec), September 5, 2022, protocol RBR-26chs2g.
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Affiliation(s)
- Amanda Motta de Bortoli
- Postgraduate Program in Nutrition and Health, Health Sciences Center, Federal University of Espírito Santo, Av. Mal. Campos, 1468 - Maruípe, Vitória, 29047-100, ES, Brazil
| | - Márcia Helena Cassago Nascimento
- Postgraduate Program in Chemistry, Center of Exact Sciences, Federal University of Espírito Santo, Av. Fernando Ferrari, 514 - Goiabeiras, Vitória, 29075-910, ES, Brazil
| | - Blanca Elena Guerrero Daboin
- Postgraduate Program in Nutrition and Health, Health Sciences Center, Federal University of Espírito Santo, Av. Mal. Campos, 1468 - Maruípe, Vitória, 29047-100, ES, Brazil
| | - Beatriz Bobbio de Brito
- Postgraduate Program in Nutrition and Health, Health Sciences Center, Federal University of Espírito Santo, Av. Mal. Campos, 1468 - Maruípe, Vitória, 29047-100, ES, Brazil
| | - Luiza Recla Pessotti
- Department of Integrated Health Education, Health Sciences Center, Federal University of Espírito Santo, Av. Maruípe, 1386 - Maruípe, Vitória, 29047-185, ES, Brazil
| | - Paulo Roberto Filgueiras
- Postgraduate Program in Chemistry, Center of Exact Sciences, Federal University of Espírito Santo, Av. Fernando Ferrari, 514 - Goiabeiras, Vitória, 29075-910, ES, Brazil
| | - Andressa Bolsoni Lopes
- Postgraduate Program in Nutrition and Health, Health Sciences Center, Federal University of Espírito Santo, Av. Mal. Campos, 1468 - Maruípe, Vitória, 29047-100, ES, Brazil
| | - Valerio Garrone Barauna
- Postgraduate Program in Physiological Sciences, Health Sciences Center, Federal University of Espírito Santo, Av. Mal. Campos, 1468 - Maruípe, Vitória, 29047-100, ES, Brazil
| | - Fabiano Kenji Haraguchi
- Postgraduate Program in Nutrition and Health, Health Sciences Center, Federal University of Espírito Santo, Av. Mal. Campos, 1468 - Maruípe, Vitória, 29047-100, ES, Brazil.
- Department of Integrated Health Education, Health Sciences Center, Federal University of Espírito Santo, Av. Maruípe, 1386 - Maruípe, Vitória, 29047-185, ES, Brazil.
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Marković M, Kuzmanović M, Ranković D, Bajuk-Bogdanović D, Šajić A, Dimić D. From Structure to Strength: Analyzing the Impact of Sulfuric Acid on Pig Bone Demineralization Through FTIR, LIBS, and AAS. Int J Mol Sci 2024; 25:12250. [PMID: 39596315 PMCID: PMC11594744 DOI: 10.3390/ijms252212250] [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: 10/03/2024] [Revised: 11/10/2024] [Accepted: 11/13/2024] [Indexed: 11/28/2024] Open
Abstract
The present research aimed to investigate the demineralizing effects of sulfuric acid on pig bone. Alterations in collagen and phosphate contents and changes in the elemental composition of the bone during the 14-day-long immersion in sulfuric acid solutions of different concentrations were estimated using ATR-FTIR, LIBS, and AAS. FTIR spectra at amide I (1800-1600 cm-1) and phosphate ν1/ν3 (PO43-) (1300-900 cm-1) domains were scrutinized using the deconvolution method for monitoring changes in the protein secondary structure and mineral content. The results implicated sulfuric acid as a powerful demineralization agent and effective in targeting mineral components, such as hydroxyapatite, while leaving the collagen matrix relatively preserved with a complex secondary structure. Collagen maturity marker values gave valuable insights into the structural integrity of the bone. LIBS and AAS indicated changes in bone hardness; phosphorous-to-carbon ratio; and calcium, phosphorous, and magnesium content in the solutions left after the immersion period. The changes in the ratio of ionic-to-atomic calcium lines in the LIBS spectra indicated hardening of the bone, with increasing acid concentration and prolonged action, due to the deposition of calcium sulfate on the surface. The calcium concentration in the solutions decreased with increased acid concentration, while the change in phosphorus and magnesium concentrations was reversed.
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Affiliation(s)
- Milica Marković
- Faculty of Physical Chemistry, University of Belgrade, Studentski Trg 12-16, 11000 Belgrade, Serbia; (M.M.); (M.K.); (D.B.-B.); (A.Š.)
| | - Miroslav Kuzmanović
- Faculty of Physical Chemistry, University of Belgrade, Studentski Trg 12-16, 11000 Belgrade, Serbia; (M.M.); (M.K.); (D.B.-B.); (A.Š.)
| | - Dragan Ranković
- Vinča Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, 11000 Belgrade, Serbia;
| | - Danica Bajuk-Bogdanović
- Faculty of Physical Chemistry, University of Belgrade, Studentski Trg 12-16, 11000 Belgrade, Serbia; (M.M.); (M.K.); (D.B.-B.); (A.Š.)
| | - Aleksandra Šajić
- Faculty of Physical Chemistry, University of Belgrade, Studentski Trg 12-16, 11000 Belgrade, Serbia; (M.M.); (M.K.); (D.B.-B.); (A.Š.)
| | - Dušan Dimić
- Faculty of Physical Chemistry, University of Belgrade, Studentski Trg 12-16, 11000 Belgrade, Serbia; (M.M.); (M.K.); (D.B.-B.); (A.Š.)
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Sandt C. Identification and classification of proteins by FTIR microspectroscopy. A proof of concept. Biochim Biophys Acta Gen Subj 2024; 1868:130688. [PMID: 39117047 DOI: 10.1016/j.bbagen.2024.130688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 07/23/2024] [Accepted: 08/05/2024] [Indexed: 08/10/2024]
Abstract
FTIR spectroscopy is well known for its molecule fingerprinting capability but is also able to differentiate classes in complex biological systems. This includes strain typing and species level identification of bacterial, yeast or fungal cells, as well as distinguishing between cell layers in eukaryotic tissues. However, its use for the identification of macromolecules such as proteins remains underexplored and rarely used in practice. Here we demonstrate the efficacy of FTIR microspectroscopy coupled with machine learning methods for rapid and accurate identification of proteins in their dry state within minutes, from very small quantities of material, if they are obtained in a pure aqueous solution. FTIR microspectroscopy can provide additional information beside identification: it can detect small differences among different purification batches potentially originating from post-translational modifications or distinct folding states. Moreover, it distinguishes glycoproteins and evaluate glycosylation while detecting contaminants. This methodology presents itself as a valuable quality control tool in protein purification processes or any process requiring the utilization of precisely identified, pure proteins.
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Affiliation(s)
- Christophe Sandt
- SMIS beamline, Synchrotron SOLEIL, RD128, 91190 Saint Aubin, France.
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8
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Adi W, Rubio Perez BE, Liu Y, Runkle S, Eliceiri KW, Yesilkoy F. Machine learning-assisted mid-infrared spectrochemical fibrillar collagen imaging in clinical tissues. JOURNAL OF BIOMEDICAL OPTICS 2024; 29:093511. [PMID: 39364328 PMCID: PMC11448345 DOI: 10.1117/1.jbo.29.9.093511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 09/04/2024] [Accepted: 09/05/2024] [Indexed: 10/05/2024]
Abstract
Significance Label-free multimodal imaging methods that can provide complementary structural and chemical information from the same sample are critical for comprehensive tissue analyses. These methods are specifically needed to study the complex tumor-microenvironment where fibrillar collagen's architectural changes are associated with cancer progression. To address this need, we present a multimodal computational imaging method where mid-infrared spectral imaging (MIRSI) is employed with second harmonic generation (SHG) microscopy to identify fibrillar collagen in biological tissues. Aim To demonstrate a multimodal approach where a morphology-specific contrast mechanism guides an MIRSI method to detect fibrillar collagen based on its chemical signatures. Approach We trained a supervised machine learning (ML) model using SHG images as ground truth collagen labels to classify fibrillar collagen in biological tissues based on their mid-infrared hyperspectral images. Five human pancreatic tissue samples (sizes are in the order of millimeters) were imaged by both MIRSI and SHG microscopes. In total, 2.8 million MIRSI spectra were used to train a random forest (RF) model. The other 68 million spectra were used to validate the collagen images generated by the RF-MIRSI model in terms of collagen segmentation, orientation, and alignment. Results Compared with the SHG ground truth, the generated RF-MIRSI collagen images achieved a high average boundary F -score (0.8 at 4-pixel thresholds) in the collagen distribution, high correlation (Pearson's R 0.82) in the collagen orientation, and similarly high correlation (Pearson's R 0.66) in the collagen alignment. Conclusions We showed the potential of ML-aided label-free mid-infrared hyperspectral imaging for collagen fiber and tumor microenvironment analysis in tumor pathology samples.
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Affiliation(s)
- Wihan Adi
- University of Wisconsin-Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
| | - Bryan E. Rubio Perez
- University of Wisconsin-Madison, Department of Electrical and Computer Engineering, Madison, Wisconsin, United States
| | - Yuming Liu
- University of Wisconsin-Madison, Center for Quantitative Cell Imaging, Madison, Wisconsin, United States
| | - Sydney Runkle
- University of Wisconsin-Madison, Department of Computer Science, Madison, Wisconsin, United States
| | - Kevin W. Eliceiri
- University of Wisconsin-Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
- University of Wisconsin-Madison, Center for Quantitative Cell Imaging, Madison, Wisconsin, United States
- Morgridge Institute for Research, Madison, Wisconsin, United States
| | - Filiz Yesilkoy
- University of Wisconsin-Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
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Andjelic S, Hawlina M. Human Primary Lens Epithelial Cultures on Basal Laminas Studied by Synchrotron-Based FTIR Microspectroscopy for Understanding Posterior Capsular Opacification. Int J Mol Sci 2024; 25:8858. [PMID: 39201542 PMCID: PMC11354709 DOI: 10.3390/ijms25168858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 08/05/2024] [Accepted: 08/12/2024] [Indexed: 09/02/2024] Open
Abstract
Human primary lens epithelial cultures serve as an in vitro model for posterior capsular opacification (PCO) formation. PCO occurs when residual lens epithelial cells (LECs) migrate and proliferate after cataract surgery, differentiating into fibroblastic and lens fiber-like cells. This study aims to show and compare the bio-macromolecular profiles of primary LEC cultures and postoperative lens epithelia LECs on basal laminas (bls), while also analyzing bls and cultured LECs separately. Using synchrotron radiation-based Fourier transform infrared (SR-FTIR) (Bruker, Karlsruhe, Germany) microspectroscopy at the Spanish synchrotron light source ALBA, we observed that the SR-FTIR measurements were predominantly influenced by the strong collagen absorbance of the bls. Cultured LECs on bls showed a higher collagen contribution, indicated by higher vas CH3, CH2 and CH3 wagging and deformation, and the C-N stretching of collagen. In contrast, postoperative LECs on bls showed a higher cell contribution, indicated by the vsym CH2 peak and the ratio between vas CH2 and vas CH3 peaks. The primary difference revealed using SR-FTIR is the greater LEC contribution in spectra recorded from postoperative lens epithelia compared to cultured LECs on bls. IR spectra for bl, cultured LECs and postoperative lens epithelia could be valuable for future research.
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Affiliation(s)
- Sofija Andjelic
- Eye Hospital, University Medical Centre, 1000 Ljubljana, Slovenia
| | - Marko Hawlina
- Eye Hospital, University Medical Centre, 1000 Ljubljana, Slovenia
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10
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Adi W, Perez BER, Liu Y, Runkle S, Eliceiri KW, Yesilkoy F. Machine learning assisted mid-infrared spectrochemical fibrillar collagen imaging in clinical tissues. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.22.595393. [PMID: 38826188 PMCID: PMC11142197 DOI: 10.1101/2024.05.22.595393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Significance Label-free multimodal imaging methods that can provide complementary structural and chemical information from the same sample are critical for comprehensive tissue analyses. These methods are specifically needed to study the complex tumor-microenvironment where fibrillar collagen's architectural changes are associated with cancer progression. To address this need, we present a multimodal computational imaging method where mid-infrared spectral imaging (MIRSI) is employed with second harmonic generation (SHG) microscopy to identify fibrillar collagen in biological tissues. Aim To demonstrate a multimodal approach where a morphology-specific contrast mechanism guides a mid-infrared spectral imaging method to detect fibrillar collagen based on its chemical signatures. Approach We trained a supervised machine learning (ML) model using SHG images as ground truth collagen labels to classify fibrillar collagen in biological tissues based on their mid-infrared hyperspectral images. Five human pancreatic tissue samples (sizes are in the order of millimeters) were imaged by both MIRSI and SHG microscopes. In total, 2.8 million MIRSI spectra were used to train a random forest (RF) model. The remaining 68 million spectra were used to validate the collagen images generated by the RF-MIRSI model in terms of collagen segmentation, orientation, and alignment. Results Compared to the SHG ground truth, the generated MIRSI collagen images achieved a high average boundary F-score (0.8 at 4 pixels threshold) in the collagen distribution, high correlation (Pearson's R 0.82) in the collagen orientation, and similarly high correlation (Pearson's R 0.66) in the collagen alignment. Conclusions We showed the potential of ML-aided label-free mid-infrared hyperspectral imaging for collagen fiber and tumor microenvironment analysis in tumor pathology samples.
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Affiliation(s)
- Wihan Adi
- Department of Biomedical Engineering University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Bryan E. Rubio Perez
- Department of Electrical and Computer Engineering University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Yuming Liu
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Sydney Runkle
- Department of Computer Science University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Kevin W. Eliceiri
- Department of Biomedical Engineering University of Wisconsin-Madison, Madison, WI, 53705, USA
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI 53706, USA
- Morgridge Institute for Research, Madison, WI 53706, USA
| | - Filiz Yesilkoy
- Department of Biomedical Engineering University of Wisconsin-Madison, Madison, WI, 53705, USA
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Belloni A, Notarstefano V, Greco S, Pellegrino P, Giorgini E, Ciarmela P. FTIR Microspectroscopy as a new probe to study human uterine lesions: Characterization of tumor cell lines from uterine smooth muscle cells and evaluation of EPA and DHA in vitro treatments. Biochim Biophys Acta Mol Basis Dis 2024; 1870:166873. [PMID: 37666437 DOI: 10.1016/j.bbadis.2023.166873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/05/2023] [Accepted: 08/31/2023] [Indexed: 09/06/2023]
Abstract
During their life, women are likely to develop uterine diseases, which often compromise their fertile and perimenopausal age. Besides benign lesions like leiomyomas, several malignant neoplasms can occur, such as the uterine leiomyosarcoma, which represents the most frequent malignancy among the rarest uterine cancers. It presents several variants similar to both benign and malignant neoplasms, and sometimes it shares symptoms with the benign counterpart. In this scenario, for a correct diagnosis and a successful prognosis, it is mandatory to detect new reliable markers which strengthen histopathological outcomes and let define a more appropriate and less harmful therapy. Based on this concerning evidence, in the present study, Fourier Transform Infrared Microspectroscopy has been exploited at a cellular level on uterine leiomyoma and leiomyosarcoma cell lines to (1) identify specific spectral biomarkers able to distinguish between benign and malignant lesions, and (2) evaluate the efficacy of eicosapentaenoic and docosahexaenoic acids (respectively EPA and DHA), already successfully tested. Results evidenced reliable differences in the spectral signature of benign and malignant cells, mainly in terms of lipids and nucleic acids composition. Moreover, even if EPA and DHA seemed to exert different effects on the tested cell lines, no cytotoxic and/or anti-apoptotic actions were observed after omega-3 based treatments.
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Affiliation(s)
- Alessia Belloni
- Department of Life and Environmental Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Valentina Notarstefano
- Department of Life and Environmental Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Stefania Greco
- Department of Experimental and Clinical Medicine, Università Politecnica delle Marche, Ancona, Italy.
| | - Pamela Pellegrino
- Department of Experimental and Clinical Medicine, Università Politecnica delle Marche, Ancona, Italy.
| | - Elisabetta Giorgini
- Department of Life and Environmental Sciences, Università Politecnica delle Marche, Ancona, Italy.
| | - Pasquapina Ciarmela
- Department of Experimental and Clinical Medicine, Università Politecnica delle Marche, Ancona, Italy.
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12
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Zupančič B, Ugwoke CK, Abdelmonaem MEA, Alibegović A, Cvetko E, Grdadolnik J, Šerbec A, Umek N. Exploration of macromolecular phenotype of human skeletal muscle in diabetes using infrared spectroscopy. Front Endocrinol (Lausanne) 2023; 14:1308373. [PMID: 38189046 PMCID: PMC10769457 DOI: 10.3389/fendo.2023.1308373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 11/29/2023] [Indexed: 01/09/2024] Open
Abstract
Introduction The global burden of diabetes mellitus is escalating, and more efficient investigative strategies are needed for a deeper understanding of underlying pathophysiological mechanisms. The crucial role of skeletal muscle in carbohydrate and lipid metabolism makes it one of the most susceptible tissues to diabetes-related metabolic disorders. In tissue studies, conventional histochemical methods have several technical limitations and have been shown to inadequately characterise the biomolecular phenotype of skeletal muscle to provide a holistic view of the pathologically altered proportions of macromolecular constituents. Materials and methods In this pilot study, we examined the composition of five different human skeletal muscles from male donors diagnosed with type 2 diabetes and non-diabetic controls. We analysed the lipid, glycogen, and collagen content in the muscles in a traditional manner with histochemical assays using different staining techniques. This served as a reference for comparison with the unconventional analysis of tissue composition using Fourier-transform infrared spectroscopy as an alternative methodological approach. Results A thorough chemometric post-processing of the infrared spectra using a multi-stage spectral decomposition allowed the simultaneous identification of various compositional details from a vibrational spectrum measured in a single experiment. We obtained multifaceted information about the proportions of the different macromolecular constituents of skeletal muscle, which even allowed us to distinguish protein constituents with different structural properties. The most important methodological steps for a comprehensive insight into muscle composition have thus been set and parameters identified that can be used for the comparison between healthy and diabetic muscles. Conclusion We have established a methodological framework based on vibrational spectroscopy for the detailed macromolecular analysis of human skeletal muscle that can effectively complement or may even serve as an alternative to histochemical assays. As this is a pilot study with relatively small sample sets, we remain cautious at this stage in drawing definitive conclusions about diabetes-related changes in skeletal muscle composition. However, the main focus and contribution of our work has been to provide an alternative, simple and efficient approach for this purpose. We are confident that we have achieved this goal and have brought our methodology to a level from which it can be successfully transferred to a large-scale study that allows the effects of diabetes on skeletal muscle composition and the interrelationships between the macromolecular tissue alterations due to diabetes to be investigated.
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Affiliation(s)
- Barbara Zupančič
- Laboratory for Molecular Structural Dynamics, Theory Department, National Institute of Chemistry, Ljubljana, Slovenia
| | | | - Mohamed Elwy Abdelhamed Abdelmonaem
- Laboratory for Molecular Structural Dynamics, Theory Department, National Institute of Chemistry, Ljubljana, Slovenia
- Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Armin Alibegović
- Department of Forensic Medicine and Deontology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Erika Cvetko
- Institute of Anatomy, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Jože Grdadolnik
- Laboratory for Molecular Structural Dynamics, Theory Department, National Institute of Chemistry, Ljubljana, Slovenia
| | - Anja Šerbec
- Institute of Anatomy, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Nejc Umek
- Institute of Anatomy, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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13
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Samouillan V, Garcia E, Benitez-Amaro A, La Chica Lhoëst MT, Dandurand J, Actis Dato V, Guerra JM, Escolà-Gil JC, Chiabrando G, Enrich C, Llorente-Cortes V. Inhibitory Effects of LRP1-Based Immunotherapy on Cardiac Extracellular Matrix Biophysical Alterations Induced by Hypercholesterolemia. J Med Chem 2023; 66:6251-6262. [PMID: 37116069 PMCID: PMC10184115 DOI: 10.1021/acs.jmedchem.2c02103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
The accumulation of lipids in cardiomyocytes contributes to cardiac dysfunction. The specific blockage of cardiomyocyte cholesteryl ester (CE) loading by antibodies (Abs) against the P3 sequence (Gly1127-Cys1140) of the LRP1 receptor improves cardiac insulin sensitivity. The impact of anti-P3 Abs on high-fat diet (HFD)-induced cardiac extracellular matrix (ECM) biophysical alterations was analyzed. Both IrP (without Abs) and P3-immunized rabbits (with Abs) were randomized into groups fed either HFD or a standard chow diet. Cardiac lipids, proteins, and carbohydrates were characterized by Fourier transform infrared spectroscopy in the attenuated total reflectance mode. The hydric organization and physical structure were determined by differential scanning calorimetry. HFD increased the levels of esterified lipids, collagen, and α-helical structures and upregulated fibrosis, bound water, and ECM plasticization in the heart. The inhibitory effect of anti-P3 Abs on cardiac CE accumulation was sufficient to reduce the collagen-filled extracellular space, the level of fibrosis, and the amount of bound water but did not counteract ECM plasticization in the heart of hypercholesterolemic rabbits.
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Affiliation(s)
- Valerie Samouillan
- CIRIMAT, Université de Toulouse, Université Paul Sabatier, Equipe PHYPOL, 31062 Toulouse, France
| | - Eduardo Garcia
- Biomedical Research Institute Sant Pau (IIB SANTPAU), Universitat Autonoma de Barcelona, 08041 Barcelona, Spain
- Institute of Biomedical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), 08036 Barcelona, Spain
| | - Aleyda Benitez-Amaro
- Biomedical Research Institute Sant Pau (IIB SANTPAU), Universitat Autonoma de Barcelona, 08041 Barcelona, Spain
- Institute of Biomedical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), 08036 Barcelona, Spain
| | - Maria Teresa La Chica Lhoëst
- Biomedical Research Institute Sant Pau (IIB SANTPAU), Universitat Autonoma de Barcelona, 08041 Barcelona, Spain
- Institute of Biomedical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), 08036 Barcelona, Spain
| | - Jany Dandurand
- CIRIMAT, Université de Toulouse, Université Paul Sabatier, Equipe PHYPOL, 31062 Toulouse, France
| | - Virginia Actis Dato
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Godoy Cruz, 2290 Buenos Aires, Argentina
| | - Jose Maria Guerra
- Department of Cardiology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau (IIB-SANTPAU), Universitat Autonoma de Barcelona, 08025 Barcelona, Spain
- CIBERCV, Institute of Health Carlos III, 28029 Madrid, Spain
| | - Joan Carles Escolà-Gil
- Metabolic Basis of Cardiovascular Risk, Biomedical Research Institute Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain
- CIBER de Diabetes y enfermedades Metabólicas Asociadas (CIBERDEM), 28029 Madrid, Spain
| | - Gustavo Chiabrando
- Instituto Universitario de Ciencias Biomédicas de Córdoba (IUCBC), Centro de Investigación en Medicina Translacional Severo R. Amuchástegui (CIMETSA), G. V. al Instituto de Investigación Médica Mercedes y Martín Ferreyra (INIMEC-CONICET-UNC), X5016KEJ Córdoba, Argentina
| | - Carlos Enrich
- Unitat de Biologia Cellular, Departament de Biomedicina, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, 08036 Barcelona, Spain
- Centre de Recerca Biomèdica CELLEX, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Vicenta Llorente-Cortes
- Biomedical Research Institute Sant Pau (IIB SANTPAU), Universitat Autonoma de Barcelona, 08041 Barcelona, Spain
- Institute of Biomedical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), 08036 Barcelona, Spain
- CIBERCV, Institute of Health Carlos III, 28029 Madrid, Spain
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14
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Mavropalias G, Boppart M, Usher KM, Grounds MD, Nosaka K, Blazevich AJ. Exercise builds the scaffold of life: muscle extracellular matrix biomarker responses to physical activity, inactivity, and aging. Biol Rev Camb Philos Soc 2023; 98:481-519. [PMID: 36412213 DOI: 10.1111/brv.12916] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 10/23/2022] [Accepted: 10/25/2022] [Indexed: 11/23/2022]
Abstract
Skeletal muscle extracellular matrix (ECM) is critical for muscle force production and the regulation of important physiological processes during growth, regeneration, and remodelling. ECM remodelling is a tightly orchestrated process, sensitive to multi-directional tensile and compressive stresses and damaging stimuli, and its assessment can convey important information on rehabilitation effectiveness, injury, and disease. Despite its profound importance, ECM biomarkers are underused in studies examining the effects of exercise, disuse, or aging on muscle function, growth, and structure. This review examines patterns of short- and long-term changes in the synthesis and concentrations of ECM markers in biofluids and tissues, which may be useful for describing the time course of ECM remodelling following physical activity and disuse. Forces imposed on the ECM during physical activity critically affect cell signalling while disuse causes non-optimal adaptations, including connective tissue proliferation. The goal of this review is to inform researchers, and rehabilitation, medical, and exercise practitioners better about the role of ECM biomarkers in research and clinical environments to accelerate the development of targeted physical activity treatments, improve ECM status assessment, and enhance function in aging, injury, and disease.
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Affiliation(s)
- Georgios Mavropalias
- Centre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027, Australia
- Centre for Molecular Medicine and Innovative Therapeutics, and Centre for Healthy Aging, Health Futures Institute, Murdoch University, Murdoch, WA, 6150, Australia
- Discipline of Exercise Science, Murdoch University, Murdoch, WA, 6150, Australia
| | - Marni Boppart
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, 1206 South Fourth St, Urbana, IL, 61801, USA
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana- Champaign, 405 N. Mathews Avenue, Urbana, IL, 61801, USA
| | - Kayley M Usher
- School of Biomedical Sciences, University of Western Australia (M504), 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Miranda D Grounds
- School of Human Sciences, University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Kazunori Nosaka
- Centre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027, Australia
| | - Anthony J Blazevich
- Centre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027, Australia
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15
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Stecco A, Giordani F, Fede C, Pirri C, De Caro R, Stecco C. From Muscle to the Myofascial Unit: Current Evidence and Future Perspectives. Int J Mol Sci 2023; 24:ijms24054527. [PMID: 36901958 PMCID: PMC10002604 DOI: 10.3390/ijms24054527] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 02/22/2023] [Accepted: 02/23/2023] [Indexed: 03/02/2023] Open
Abstract
The "motor unit" or the "muscle" has long been considered the quantal element in the control of movement. However, in recent years new research has proved the strong interaction between muscle fibers and intramuscular connective tissue, and between muscles and fasciae, suggesting that the muscles can no longer be considered the only elements that organize movement. In addition, innervation and vascularization of muscle is strongly connected with intramuscular connective tissue. This awareness induced Luigi Stecco, in 2002, to create a new term, the "myofascial unit", to describe the bilateral dependent relationship, both anatomical and functional, that occurs between fascia, muscle and accessory elements. The aim of this narrative review is to understand the scientific support for this new term, and whether it is actually correct to consider the myofascial unit the physiological basic element for peripheral motor control.
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Affiliation(s)
- Antonio Stecco
- Department of Rehabilitation Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Federico Giordani
- Department of Rehabilitation Medicine, Padova University, 35141 Padova, Italy
| | - Caterina Fede
- Department of Neuroscience, Institute of Human Anatomy, University of Padova, 35141 Padova, Italy
| | - Carmelo Pirri
- Department of Neuroscience, Institute of Human Anatomy, University of Padova, 35141 Padova, Italy
| | - Raffaele De Caro
- Department of Neuroscience, Institute of Human Anatomy, University of Padova, 35141 Padova, Italy
| | - Carla Stecco
- Department of Neuroscience, Institute of Human Anatomy, University of Padova, 35141 Padova, Italy
- Correspondence: ; Tel.: +39-04-9827-2315
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16
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Brăzdaru L, Staicu T, Albu Kaya MG, Chelaru C, Ghica C, Cîrcu V, Leca M, Ghica MV, Micutz M. 3D Porous Collagen Matrices-A Reservoir for In Vitro Simultaneous Release of Tannic Acid and Chlorhexidine. Pharmaceutics 2022; 15:pharmaceutics15010076. [PMID: 36678705 PMCID: PMC9865545 DOI: 10.3390/pharmaceutics15010076] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/17/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022] Open
Abstract
The treatment of wounds occurring accidentally or as a result of chronic diseases most frequently requires the use of appropriate dressings, mainly to ensure tissue regeneration/healing, at the same time as treating or preventing potential bacterial infections or superinfections. Collagen type I-based scaffolds in tandem with adequate antimicrobials can successfully fulfill these requirements. In this work, starting from the corresponding hydrogels, we prepared a series of freeze-dried atelocollagen type I-based matrices loaded with tannic acid (TA) and chlorhexidine digluconate (CHDG) as active agents with a broad spectrum of antimicrobial activity and also as crosslinkers for the collagen network. The primary aim of this study was to design an original and reliable algorithm to in vitro monitor and kinetically analyze the simultaneous release of TA and CHDG from the porous matrices into an aqueous solution of phosphate-buffered saline (PBS, pH 7.4, 37 °C) containing micellar carriers of a cationic surfactant (hexadecyltrimethylammonium bromide, HTAB) as a release environment that roughly mimics human extracellular fluids in living tissues. Around this central idea, a comprehensive investigation of the lyophilized matrices (morpho-structural characterization through FT-IR spectroscopy, scanning electron microscopy, swelling behavior, resistance against the collagenolytic action of collagenase type I) was carried out. The kinetic treatment of the release data displayed a preponderance of non-Fickian-Case II diffusion behavior, which led to a general anomalous transport mechanism for both TA and CHDG, irrespective of their concentrations. This is equivalent to saying that the release regime is not governed only by the gradient concentration of the releasing components inside and outside the matrix (like in ideal Fickian diffusion), but also, to a large extent, by the relaxation phenomena of the collagen network (determined, in turn, by its crosslinking degree induced by TA and CHDG) and the dynamic capacity of the HTAB micelles to solubilize the two antimicrobials. By controlling the degree of physical crosslinking of collagen with a proper content of TA and CHDG loaded in the matrix, a tunable, sustainable release profile can be obtained.
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Affiliation(s)
- Lavinia Brăzdaru
- Department of Physical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
| | - Teodora Staicu
- Department of Physical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
- Correspondence: (T.S.); (M.M.)
| | | | - Ciprian Chelaru
- Leather and Footwear Research Institute, 93 Ion Mincu St., 031215 Bucharest, Romania
| | - Corneliu Ghica
- National Institute of Materials Physics, 105 bis Atomistilor St., 077125 Magurele, Romania
| | - Viorel Cîrcu
- Department of Inorganic Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
| | - Minodora Leca
- Department of Physical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
| | - Mihaela Violeta Ghica
- Faculty of Pharmacy, University of Medicine and Pharmacy “Carol Davila”, 6 Traian Vuia St., 020956 Bucharest, Romania
| | - Marin Micutz
- Department of Physical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
- Institute of Physical Chemistry “Ilie Murgulescu”, Romanian Academy, 202 Spl. Independenţei, 060021 Bucharest, Romania
- Correspondence: (T.S.); (M.M.)
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Zupančič B, Umek N, Ugwoke CK, Cvetko E, Horvat S, Grdadolnik J. Application of FTIR Spectroscopy to Detect Changes in Skeletal Muscle Composition Due to Obesity with Insulin Resistance and STZ-Induced Diabetes. Int J Mol Sci 2022; 23:ijms232012498. [PMID: 36293355 PMCID: PMC9603871 DOI: 10.3390/ijms232012498] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/12/2022] [Accepted: 10/14/2022] [Indexed: 11/16/2022] Open
Abstract
Age, obesity, and diabetes mellitus are pathophysiologically interconnected factors that significantly contribute to the global burden of non-communicable diseases. These metabolic conditions are associated with impaired insulin function, which disrupts the metabolism of carbohydrates, lipids, and proteins and can lead to structural and functional changes in skeletal muscle. Therefore, the alterations in the macromolecular composition of skeletal muscle may provide an indication of the underlying mechanisms of insulin-related disorders. The aim of this study was to investigate the potential of Fourier transform infrared (FTIR) spectroscopy to reveal the changes in macromolecular composition in weight-bearing and non-weight-bearing muscles of old, obese, insulin-resistant, and young streptozotocin (STZ)-induced diabetic mice. The efficiency of FTIR spectroscopy was evaluated by comparison with the results of gold-standard histochemical techniques. The differences in biomolecular phenotypes and the alterations in muscle composition in relation to their functional properties observed from FTIR spectra suggest that FTIR spectroscopy can detect most of the changes observed in muscle tissue by histochemical analyses and more. Therefore, it could be used as an effective alternative because it allows for the complete characterization of macromolecular composition in a single, relatively simple experiment, avoiding some obvious drawbacks of histochemical methods.
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Affiliation(s)
- Barbara Zupančič
- Laboratory for Molecular Structural Dynamics, Theory Department, National Institute of Chemistry, 1000 Ljubljana, Slovenia
| | - Nejc Umek
- Institute of Anatomy, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
- Correspondence: (N.U.); (J.G.)
| | | | - Erika Cvetko
- Institute of Anatomy, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Simon Horvat
- Chair for Genetics, Biotechnology and Immunology, Biotechnical Faculty, University of Ljubljana, 1230 Domžale, Slovenia
| | - Jože Grdadolnik
- Laboratory for Molecular Structural Dynamics, Theory Department, National Institute of Chemistry, 1000 Ljubljana, Slovenia
- Correspondence: (N.U.); (J.G.)
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Deciphering the Biochemical Similarities and Differences Among Human Neuroglial Cells and Glioma Cells Using Fourier Transform Infrared Spectroscopy. World Neurosurg 2022; 168:e562-e569. [DOI: 10.1016/j.wneu.2022.10.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 10/09/2022] [Accepted: 10/10/2022] [Indexed: 11/11/2022]
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19
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Collagen extracted from rabbit: meat and by-products: isolation and physicochemical assessment. Food Res Int 2022; 162:111967. [DOI: 10.1016/j.foodres.2022.111967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 11/23/2022]
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20
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Ge B, Hou C, Bao B, Pan Z, de Val JEMS, Elango J, Wu W. Comparison of Physicochemical and Structural Properties of Acid-Soluble and Pepsin-Soluble Collagens from Blacktip Reef Shark Skin. Mar Drugs 2022; 20:md20060376. [PMID: 35736179 PMCID: PMC9228053 DOI: 10.3390/md20060376] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 05/30/2022] [Accepted: 05/31/2022] [Indexed: 02/01/2023] Open
Abstract
Fish collagen has been widely used in tissue engineering (TE) applications as an implant, which is generally transplanted into target tissue with stem cells for better regeneration ability. In this case, the success rate of this research depends on the fundamental components of fish collagen such as amino acid composition, structural and rheological properties. Therefore, researchers have been trying to find an innovative raw material from marine origins for tissue engineering applications. Based on this concept, collagens such as acid-soluble (ASC) and pepsin-soluble (PSC) were extracted from a new type of cartilaginous fish, the blacktip reef shark, for the first time, and were further investigated for physicochemical, protein pattern, microstructural and peptide mapping. The study results confirmed that the extracted collagens resemble the protein pattern of type-I collagen comprising the α1, α2, β and γ chains. The hydrophobic amino acids were dominant in both collagens with glycine and hydroxyproline as major amino acids. From the FTIR spectra, α helix (27.72 and 26.32%), β-sheet (22.24 and 23.35%), β-turn (21.34 and 22.08%), triple helix (14.11 and 14.13%) and random coil (14.59 and 14.12%) structures of ASC and PSC were confirmed, respectively. Collagens retained their triple helical and secondary structure well. Both collagens had maximum solubility at 3% NaCl and pH 4, and had absorbance maxima at 234 nm, respectively. The peptide mapping was almost similar for ASC and PSC at pH 2, generating peptides ranging from 15 to 200 kDa, with 23 kDa as a major peptide fragment. The microstructural analysis confirmed the homogenous fibrillar nature of collagens with more interconnected networks. Overall, the preset study concluded that collagen can be extracted more efficiently without disturbing the secondary structure by pepsin treatment. Therefore, the blacktip reef shark skin could serve as a potential source for collagen extraction for the pharmaceutical and biomedical applications.
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Affiliation(s)
- Baolin Ge
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (B.G.); (C.H.); (B.B.); (Z.P.)
| | - Chunyu Hou
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (B.G.); (C.H.); (B.B.); (Z.P.)
| | - Bin Bao
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (B.G.); (C.H.); (B.B.); (Z.P.)
| | - Zhilin Pan
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (B.G.); (C.H.); (B.B.); (Z.P.)
| | - José Eduardo Maté Sánchez de Val
- Department of Biomaterials Engineering, Faculty of Health Sciences, UCAM-Universidad Católica San Antonio de Murcia, Guadalupe, 30107 Murcia, Spain;
| | - Jeevithan Elango
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (B.G.); (C.H.); (B.B.); (Z.P.)
- Department of Biomaterials Engineering, Faculty of Health Sciences, UCAM-Universidad Católica San Antonio de Murcia, Guadalupe, 30107 Murcia, Spain;
- Correspondence: or (J.E.); (W.W.)
| | - Wenhui Wu
- Department of Marine Pharmacology, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (B.G.); (C.H.); (B.B.); (Z.P.)
- Correspondence: or (J.E.); (W.W.)
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21
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Huang SY, Hsieh PY, Chung CJ, Chou CM, He JL. Nanoarchitectonics for Ultrathin Gold Films Deposited on Collagen Fabric by High-Power Impulse Magnetron Sputtering. NANOMATERIALS 2022; 12:nano12101627. [PMID: 35630849 PMCID: PMC9143808 DOI: 10.3390/nano12101627] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/07/2022] [Accepted: 05/07/2022] [Indexed: 11/16/2022]
Abstract
Gold nanoparticles conjugated with collagen molecules and fibers have been proven to improve structure strength, water and enzyme degradation resistance, cell attachment, cell proliferation, and skin wound healing. In this study, high-power impulse magnetron sputtering (HiPIMS) was used to deposit ultrathin gold films (UTGF) and discontinuous island structures on type I collagen substrates. A long turn-off time of duty cycle and low chamber temperature of HiPIMS maintained substrate morphology. Increasing the deposition time from 6 s to 30 s elevated the substrate surface coverage by UTGF up to 91.79%, as observed by a field emission scanning electron microscope. X-ray diffractometry analysis revealed signature low and wide peaks for Au (111). The important surface functional groups and signature peaks of collagen substrate remained unchanged according to Fourier transform infrared spectroscopy results. Multi-peak curve fitting of the Amide I spectrum revealed the non-changed protein secondary structure of type I collagen, which mainly consists of α-helix. Atomic force microscopy observation showed that the roughness average value shifted from 1.74 to 4.17 nm by increasing the deposition time from 13 s to 77 s. The uneven surface of collagen substrate made quantification of thin film thickness by AFM difficult. Instead, UTGF thickness was measured using simultaneously deposited glass specimens placed in an HiPIMS chamber with collagen substrates. Film thickness was 3.99 and 10.37 nm at deposition times of 13 and 77 s, respectively. X-ray photoelectron spectroscopy showed preserved substrate elements on the surface. Surface water contact angle measurement revealed the same temporary hydrophobic behavior before water absorption via exposed collagen substrates, regardless of deposition time. In conclusion, HiPIMS is an effective method to deposit UTGF on biomedical materials such as collagen without damaging valuable substrates. The composition of two materials could be further used for biomedical purposes with preserved functions of UTGF and collagen.
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Affiliation(s)
- Sheng-Yang Huang
- Department of Materials Science and Engineering, Feng Chia University, 100, Wenhwa Rd., Seatwen District, Taichung 40724, Taiwan; (S.-Y.H.); (P.-Y.H.)
- Department of Surgery, Taichung Veterans General Hospital, 1650, Sec. 4, Taiwan Boulevard, Seatwen District, Taichung 40705, Taiwan
- Department of Medicine, National Yang-Ming University, 155, Sec.2, Linong Street, Beitou District, Taipei 11221, Taiwan
| | - Ping-Yen Hsieh
- Department of Materials Science and Engineering, Feng Chia University, 100, Wenhwa Rd., Seatwen District, Taichung 40724, Taiwan; (S.-Y.H.); (P.-Y.H.)
| | - Chi-Jen Chung
- Department of Dental Technology and Materials Science, Central Taiwan University of Science and Technology, 666, Buzih Rd., Beitun District, Taichung 40601, Taiwan;
| | - Chia-Man Chou
- Department of Surgery, Taichung Veterans General Hospital, 1650, Sec. 4, Taiwan Boulevard, Seatwen District, Taichung 40705, Taiwan
- Department of Medicine, National Yang-Ming University, 155, Sec.2, Linong Street, Beitou District, Taipei 11221, Taiwan
- Correspondence: ; Tel.: +886-4-23592525 (ext. 5182)
| | - Ju-Liang He
- Institute of Plasma, Feng Chia University, 100, Wenhwa Rd., Seatwen District, Taichung 40724, Taiwan;
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22
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Bjørge IM, de Sousa BM, Patrício SG, Silva AS, Nogueira LP, Santos LF, Vieira SI, Haugen HJ, Correia CR, Mano JF. Bioengineered Hierarchical Bonelike Compartmentalized Microconstructs Using Nanogrooved Microdiscs. ACS APPLIED MATERIALS & INTERFACES 2022; 14:19116-19128. [PMID: 35446549 DOI: 10.1021/acsami.2c01161] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Fabrication of vascularized large-scale constructs for regenerative medicine remains elusive since most strategies rely solely on cell self-organization or overly control cell positioning, failing to address nutrient diffusion limitations. We propose a modular and hierarchical tissue-engineering strategy to produce bonelike tissues carrying signals to promote prevascularization. In these 3D systems, disc-shaped microcarriers featuring nanogrooved topographical cues guide cell behavior by harnessing mechanotransduction mechanisms. A sequential seeding strategy of adipose-derived stromal cells and endothelial cells is implemented within compartmentalized, liquefied-core macrocapsules in a self-organizing and dynamic system. Importantly, our system autonomously promotes osteogenesis and construct's mineralization while promoting a favorable environment for prevascular-like endothelial organization. Given its modular and self-organizing nature, our strategy may be applied for the fabrication of larger constructs with a highly controlled starting point to be used for local regeneration upon implantation or as drug-screening platforms.
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Affiliation(s)
- Isabel M Bjørge
- Department of Chemistry, CICECO─Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-168, Portugal
| | - Bárbara M de Sousa
- Institute of Biomedicine (iBiMED), Department of Medical Sciences, University of Aveiro, Aveiro 3810-193, Portugal
| | - Sónia G Patrício
- Department of Chemistry, CICECO─Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-168, Portugal
| | - Ana Sofia Silva
- Department of Chemistry, CICECO─Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-168, Portugal
| | - Liebert P Nogueira
- Oral Research Laboratory, Institute of Clinical Dentistry, University of Oslo, Oslo 0455, Norway
| | - Lúcia F Santos
- Department of Chemistry, CICECO─Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-168, Portugal
| | - Sandra I Vieira
- Institute of Biomedicine (iBiMED), Department of Medical Sciences, University of Aveiro, Aveiro 3810-193, Portugal
| | - Håvard J Haugen
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, Oslo 0455, Norway
| | - Clara R Correia
- Department of Chemistry, CICECO─Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-168, Portugal
| | - João F Mano
- Department of Chemistry, CICECO─Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-168, Portugal
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23
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Gosling S, Calabrese D, Nallala J, Greenwood C, Pinder S, King L, Marks J, Pinto D, Lynch T, Lyburn ID, Hwang ES, Grand Challenge Precision Consortium, Rogers K, Stone N. A multi-modal exploration of heterogeneous physico-chemical properties of DCIS breast microcalcifications. Analyst 2022; 147:1641-1654. [PMID: 35311860 PMCID: PMC8997374 DOI: 10.1039/d1an01548f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Ductal carcinoma in situ (DCIS) is frequently associated with breast calcification. This study combines multiple analytical techniques to investigate the heterogeneity of these calcifications at the micrometre scale. X-ray diffraction, scanning electron microscopy and Raman and Fourier-transform infrared spectroscopy were used to determine the physicochemical and crystallographic properties of type II breast calcifications located in formalin fixed paraffin embedded DCIS breast tissue samples. Multiple calcium phosphate phases were identified across the calcifications, distributed in different patterns. Hydroxyapatite was the dominant mineral, with magnesium whitlockite found at the calcification edge. Amorphous calcium phosphate and octacalcium phosphate were also identified close to the calcification edge at the apparent mineral/matrix barrier. Crystallographic features of hydroxyapatite also varied across the calcifications, with higher crystallinity centrally, and highest carbonate substitution at the calcification edge. Protein was also differentially distributed across the calcification and the surrounding soft tissue, with collagen and β-pleated protein features present to differing extents. Combination of analytical techniques in this study was essential to understand the heterogeneity of breast calcifications and how this may link crystallographic and physicochemical properties of calcifications to the surrounding tissue microenvironment.
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Affiliation(s)
- Sarah Gosling
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK.
| | | | | | | | - Sarah Pinder
- Division of Cancer Studies, King's College London, Guy's Hospital, London, UK
| | - Lorraine King
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | - Jeffrey Marks
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | | | - Thomas Lynch
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | - Iain D Lyburn
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK. .,Thirlestaine Breast Centre, Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, Gloucestershire, UK.,Cobalt Medical Charity, Cheltenham, UK
| | - E Shelley Hwang
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | | | - Keith Rogers
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK.
| | - Nicholas Stone
- School of Physics and Astronomy, University of Exeter, Exeter, UK.
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24
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Dubus M, Scomazzon L, Chevrier J, Montanede A, Baldit A, Terryn C, Quilès F, Thomachot-Schneider C, Gangloff SC, Bouland N, Gindraux F, Rammal H, Mauprivez C, Kerdjoudj H. Decellularization of Wharton’s Jelly Increases Its Bioactivity and Antibacterial Properties. Front Bioeng Biotechnol 2022; 10:828424. [PMID: 35360386 PMCID: PMC8963334 DOI: 10.3389/fbioe.2022.828424] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 02/08/2022] [Indexed: 12/31/2022] Open
Abstract
The field of regenerative medicine has recently seen an emerging trend toward decellularized extracellular matrix (ECM) as a biological scaffold for stem cell-delivery. Human umbilical cord represents a valuable opportunity from both technical and ethical point of view to obtain allogenic ECM. Herein, we established a protocol, allowing the full removal of cell membranes and nuclei moieties from Wharton’s jelly (WJ) tissue. No alterations in the ECM components (i.e., collagen, GAG content, and growth factors), physical (i.e., porosity and swelling) and mechanical (i.e., linear tensile modulus) properties were noticed following WJ processing. Furthermore, no effect of the tissue processing on macromolecules and growth factors retention was observed, assuring thus a suitable bioactive matrix for cell maintenance upon recellularization. Based on the in vitro and in vivo biodegradability and stromal cell homing capabilities, decellularized WJ could provide an ideal substrate for stromal cells adhesion and colonization. Interestingly, the tissue processing increased the antibacterial and antiadhesive properties of WJ against Staphylococcus aureus and Staphylococcus epidermidis pathogens. Altogether, our results indicate that decellularized WJ matrix is able to limit Staphylococcus-related infections and to promote stromal cell homing, thus offering a versatile scaffold for tissue regenerative medicine.
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Affiliation(s)
- M. Dubus
- Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, Université de Reims Champagne Ardenne, Reims, France
- UFR d’Odontologie, Université de Reims Champagne Ardenne, Reims, France
| | - L. Scomazzon
- Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, Université de Reims Champagne Ardenne, Reims, France
| | - J. Chevrier
- Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, Université de Reims Champagne Ardenne, Reims, France
| | - A. Montanede
- Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, Université de Reims Champagne Ardenne, Reims, France
| | - A. Baldit
- Laboratoire d’étude des Microstructures et de Mécanique des Matériaux (LEM3), UMR CNRS 7239, Université de Lorraine, Metz, France
| | - C. Terryn
- Plateau Technique PICT, Université de Reims Champagne Ardenne, Reims, France
| | - F. Quilès
- CNRS, LCPME, Université de Lorraine, Nancy, France
| | - C. Thomachot-Schneider
- Groupe d’Étude des Géomatériaux et Environnement Naturels, Anthropiques et Archéologiques (GEGENAA), Université de Reims Champagne Ardenne, Reims, France
| | - S. C. Gangloff
- Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, Université de Reims Champagne Ardenne, Reims, France
- UFR de Pharmacie, Université de Reims Champagne Ardenne, Reims, France
| | - N. Bouland
- Service d’anatomopathologie, UFR de Médecine, Université de Reims Champagne Ardenne, Reims, France
| | - F. Gindraux
- Laboratoire de Nanomédecine, Imagerie, Thérapeutique, Université Bourgogne Franche-Comté, Besançon, France
| | - H. Rammal
- Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, Université de Reims Champagne Ardenne, Reims, France
- UFR d’Odontologie, Université de Reims Champagne Ardenne, Reims, France
| | - C. Mauprivez
- Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, Université de Reims Champagne Ardenne, Reims, France
- UFR d’Odontologie, Université de Reims Champagne Ardenne, Reims, France
- Centre Hospitalier Universitaire de Reims, Pôle Médecine Bucco-dentaire, Hôpital Maison Blanche, Reims, France
| | - H. Kerdjoudj
- Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, Université de Reims Champagne Ardenne, Reims, France
- UFR d’Odontologie, Université de Reims Champagne Ardenne, Reims, France
- *Correspondence: H. Kerdjoudj,
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25
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Lin PY, Huang PY, Lee YC, Ng CS. Analysis and comparison of protein secondary structures in the rachis of avian flight feathers. PeerJ 2022; 10:e12919. [PMID: 35251779 PMCID: PMC8893027 DOI: 10.7717/peerj.12919] [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: 10/29/2021] [Accepted: 01/20/2022] [Indexed: 01/11/2023] Open
Abstract
Avians have evolved many different modes of flying as well as various types of feathers for adapting to varied environments. However, the protein content and ratio of protein secondary structures (PSSs) in mature flight feathers are less understood. Further research is needed to understand the proportions of PSSs in feather shafts adapted to various flight modes in different avian species. Flight feathers were analyzed in chicken, mallard, sacred ibis, crested goshawk, collared scops owl, budgie, and zebra finch to investigate the PSSs that have evolved in the feather cortex and medulla by using nondestructive attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR). In addition, synchrotron radiation-based, Fourier transform infrared microspectroscopy (SR-FTIRM) was utilized to measure and analyze cross-sections of the feather shafts of seven bird species at a high lateral resolution to resolve the composition of proteins distributed within the sampled area of interest. In this study, significant amounts of α-keratin and collagen components were observed in flight feather shafts, suggesting that these proteins play significant roles in the mechanical strength of flight feathers. This investigation increases our understanding of adaptations to flight by elucidating the structural and mechanistic basis of the feather composition.
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Affiliation(s)
- Pin-Yen Lin
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Pei-Yu Huang
- National Synchrotron Radiation Research Center, Hsinchu, Taiwan
| | - Yao-Chang Lee
- National Synchrotron Radiation Research Center, Hsinchu, Taiwan,Department of Optics and Photonics, National Central University, Chung-Li, Taoyuan, Taiwan
| | - Chen Siang Ng
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan,Department of Life Science, National Tsing Hua University, Hsinchu, Taiwan,Bioresource Conservation Research Center, National Tsing Hua University, Hsinchu, Taiwan,The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
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26
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Frolova A, Aksenova N, Novikov I, Maslakova A, Gafarova E, Efremov Y, Bikmulina P, Elagin V, Istranova E, Kurkov A, Shekhter A, Kotova S, Zagaynova E, Timashev P. A Collagen Basketweave from the Giant Squid Mantle as a Robust Scaffold for Tissue Engineering. Mar Drugs 2021; 19:679. [PMID: 34940678 PMCID: PMC8706038 DOI: 10.3390/md19120679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 11/20/2021] [Indexed: 02/07/2023] Open
Abstract
The growing applications of tissue engineering technologies warrant the search and development of biocompatible materials with an appropriate strength and elastic moduli. Here, we have extensively studied a collagenous membrane (GSCM) separated from the mantle of the Giant squid Dosidicus Gigas in order to test its potential applicability in regenerative medicine. To establish the composition and structure of the studied material, we analyzed the GSCM by a variety of techniques, including amino acid analysis, SDS-PAGE, and FTIR. It has been shown that collagen is a main component of the GSCM. The morphology study by different microscopic techniques from nano- to microscale revealed a peculiar packing of collagen fibers forming laminae oriented at 60-90 degrees in respect to each other, which, in turn, formed layers with the thickness of several microns (a basketweave motif). The macro- and micromechanical studies showed high values of the Young's modulus and tensile strength. No significant cytotoxicity of the studied material was found by the cytotoxicity assay. Thus, the GSCM consists of a reinforced collagen network, has high mechanical characteristics, and is non-toxic, which makes it a good candidate for the creation of a scaffold material for tissue engineering.
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Affiliation(s)
- Anastasia Frolova
- World-Class Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (E.G.); (Y.E.); (P.B.); (P.T.)
| | - Nadezhda Aksenova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (N.A.); (E.I.); (A.K.); (A.S.); (S.K.)
- N.N. Semenov Federal Research Center for Chemical Physics, RAS, 4 Kosygin Street, 119991 Moscow, Russia
| | - Ivan Novikov
- Research Institute of Eye Diseases, 11 Rossolimo Street, 119021 Moscow, Russia;
| | - Aitsana Maslakova
- Faculty of Biology, Department of Human and Animal Physiology, M.V. Lomonosov Moscow State University, 1-12 Leninskie Gory, 119991 Moscow, Russia;
| | - Elvira Gafarova
- World-Class Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (E.G.); (Y.E.); (P.B.); (P.T.)
| | - Yuri Efremov
- World-Class Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (E.G.); (Y.E.); (P.B.); (P.T.)
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (N.A.); (E.I.); (A.K.); (A.S.); (S.K.)
| | - Polina Bikmulina
- World-Class Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (E.G.); (Y.E.); (P.B.); (P.T.)
| | - Vadim Elagin
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square 10/1, 603950 Nizhny Novgorod, Russia;
| | - Elena Istranova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (N.A.); (E.I.); (A.K.); (A.S.); (S.K.)
| | - Alexandr Kurkov
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (N.A.); (E.I.); (A.K.); (A.S.); (S.K.)
| | - Anatoly Shekhter
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (N.A.); (E.I.); (A.K.); (A.S.); (S.K.)
| | - Svetlana Kotova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (N.A.); (E.I.); (A.K.); (A.S.); (S.K.)
- N.N. Semenov Federal Research Center for Chemical Physics, RAS, 4 Kosygin Street, 119991 Moscow, Russia
| | - Elena Zagaynova
- Institute of Experimental Oncology and Biomedical Technologies, National Research Lobachevsky State University of Nizhny Novgorod, Prospekt Gagarina (Gagarin Avenue) 23, 603950 Nizhny Novgorod, Russia;
| | - Peter Timashev
- World-Class Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (E.G.); (Y.E.); (P.B.); (P.T.)
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya Street, 119991 Moscow, Russia; (N.A.); (E.I.); (A.K.); (A.S.); (S.K.)
- N.N. Semenov Federal Research Center for Chemical Physics, RAS, 4 Kosygin Street, 119991 Moscow, Russia
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russia
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27
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Investigation on the Composition of Agarose-Collagen I Blended Hydrogels as Matrices for the Growth of Spheroids from Breast Cancer Cell Lines. Pharmaceutics 2021; 13:pharmaceutics13070963. [PMID: 34206758 PMCID: PMC8308953 DOI: 10.3390/pharmaceutics13070963] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/18/2021] [Accepted: 06/23/2021] [Indexed: 12/12/2022] Open
Abstract
Three-dimensional (3D) cell culture systems mimic the structural complexity of the tissue microenvironment and are gaining increasing importance as they resemble the extracellular matrix (ECM)–cell and cell–cell physical interactions occurring in vivo. Several scaffold-based culture systems have been already proposed as valuable tools for large-scale production of spheroids, but they often suffer of poor reproducibility or high costs of production. In this work, we present a reliable 3D culture system based on collagen I-blended agarose hydrogels and show how the variation in the agarose percentage affects the physical and mechanical properties of the resulting hydrogel. The influence of the different physical and mechanical properties of the blended hydrogels on the growth, size, morphology, and cell motility of the spheroids obtained by culturing three different breast cancer cell lines (MCF-7, MDA-MB-361, and MDA-MB-231) was also evaluated. As proof of concept, the cisplatin penetration and its cytotoxic effect on the tumor spheroids as function of the hydrogel stiffness were also investigated. Noteworthily, the possibility to recover the spheroids from the hydrogels for further processing and other biological studies has been considered. This feature, in addition to the ease of preparation, the lack of cross-linking chemistry and the high reproducibility, makes this hydrogel a reliable biomimetic matrix for the growth of 3D cell structures.
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28
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Liu D, Caliskan S, Rashidfarokhi B, Oldenhof H, Jung K, Sieme H, Hilfiker A, Wolkers WF. Fourier transform infrared spectroscopy coupled with machine learning classification for identification of oxidative damage in freeze-dried heart valves. Sci Rep 2021; 11:12299. [PMID: 34112893 PMCID: PMC8192956 DOI: 10.1038/s41598-021-91802-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 06/01/2021] [Indexed: 11/09/2022] Open
Abstract
Freeze-drying can be used to ensure off-the-shelf availability of decellularized heart valves for cardiovascular surgery. In this study, decellularized porcine aortic heart valves were analyzed by nitroblue tetrazolium (NBT) staining and Fourier transform infrared spectroscopy (FTIR) to identify oxidative damage during freeze-drying and subsequent storage as well as after treatment with H2O2 and FeCl3. NBT staining revealed that sucrose at a concentration of at least 40% (w/v) is needed to prevent oxidative damage during freeze-drying. Dried specimens that were stored at 4 °C depict little to no oxidative damage during storage for up to 2 months. FTIR analysis shows that fresh control, freeze-dried and stored heart valve specimens cannot be distinguished from one another, whereas H2O2- and FeCl3-treated samples could be distinguished in some tissue section. A feed forward artificial neural network model could accurately classify H2O2 and FeCl3 treated samples. However, fresh control, freeze-dried and stored samples could not be distinguished from one another, which implies that these groups are very similar in terms of their biomolecular fingerprints. Taken together, we conclude that sucrose can minimize oxidative damage caused by freeze-drying, and that subsequent dried storage has little effects on the overall biochemical composition of heart valve scaffolds.
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Affiliation(s)
- Dejia Liu
- Biostabilization Laboratory, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hannover, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Sükrü Caliskan
- Biostabilization Laboratory, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hannover, Stadtfelddamm 34, 30625, Hannover, Germany.,Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Bita Rashidfarokhi
- Biostabilization Laboratory, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hannover, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Harriëtte Oldenhof
- Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Klaus Jung
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Harald Sieme
- Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Andres Hilfiker
- Leibniz Research Laboratories for Biotechnology and Artificial Organs, Hannover Medical School, Hannover, Germany
| | - Willem F Wolkers
- Biostabilization Laboratory, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, University of Veterinary Medicine Hannover, Stadtfelddamm 34, 30625, Hannover, Germany. .,Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany.
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Sawadkar P, Mandakhbayar N, Patel KD, Buitrago JO, Kim TH, Rajasekar P, Lali F, Kyriakidis C, Rahmani B, Mohanakrishnan J, Dua R, Greco K, Lee JH, Kim HW, Knowles J, García-Gareta E. Three dimensional porous scaffolds derived from collagen, elastin and fibrin proteins orchestrate adipose tissue regeneration. J Tissue Eng 2021; 12:20417314211019238. [PMID: 34104389 PMCID: PMC8165536 DOI: 10.1177/20417314211019238] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/04/2021] [Indexed: 12/18/2022] Open
Abstract
Current gold standard to treat soft tissue injuries caused by trauma and pathological condition are autografts and off the shelf fillers, but they have inherent weaknesses like donor site morbidity, immuno-compatibility and graft failure. To overcome these limitations, tissue-engineered polymers are seeded with stem cells to improve the potential to restore tissue function. However, their interaction with native tissue is poorly understood so far. To study these interactions and improve outcomes, we have fabricated scaffolds from natural polymers (collagen, fibrin and elastin) by custom-designed processes and their material properties such as surface morphology, swelling, wettability and chemical cross-linking ability were characterised. By using 3D scaffolds, we comprehensive assessed survival, proliferation and phenotype of adipose-derived stem cells in vitro. In vivo, scaffolds were seeded with adipose-derived stem cells and implanted in a rodent model, with X-ray microtomography, histology and immunohistochemistry as read-outs. Collagen-based materials showed higher cell adhesion and proliferation in vitro as well as higher adipogenic properties in vivo. In contrast, fibrin demonstrated poor cellular and adipogenesis properties but higher angiogenesis. Elastin formed the most porous scaffold, with cells displaying a non-aggregated morphology in vitro while in vivo elastin was the most degraded scaffold. These findings of how polymers present in the natural polymers mimicking ECM and seeded with stem cells affect adipogenesis in vitro and in vivo can open avenues to design 3D grafts for soft tissue repair.
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Affiliation(s)
- Prasad Sawadkar
- Regenerative Biomaterials Group, The RAFT Institute and The Griffin Institute, Northwick Park & Saint Mark's Hospital, London, UK.,Division of Surgery and Interventional Science, University College London, London, UK.,UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea
| | - Nandin Mandakhbayar
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea.,Department of Nanobiomedical Science & BK21 Plus NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea.,Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Kapil D Patel
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea.,Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea.,Department of Nanobiomedical Science & BK21 Plus NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea.,Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, UK
| | - Jennifer Olmas Buitrago
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea.,Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea.,Department of Nanobiomedical Science & BK21 Plus NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea
| | - Tae Hyun Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea.,Department of Nanobiomedical Science & BK21 Plus NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea.,R&D Center, TE Bios Co, Osong, Republic of Korea
| | - Poojitha Rajasekar
- Division of Respiratory Medicine, University of Nottingham, Nottingham, UK
| | - Ferdinand Lali
- Division of Surgery and Interventional Science, University College London, London, UK.,The Griffin Institute, Northwick Park and St Mark's Hospital, London, UK
| | - Christos Kyriakidis
- Regenerative Biomaterials Group, The RAFT Institute and The Griffin Institute, Northwick Park & Saint Mark's Hospital, London, UK
| | - Benyamin Rahmani
- Department of Mechanical Engineering, University College London, London, UK
| | - Jeviya Mohanakrishnan
- Regenerative Biomaterials Group, The RAFT Institute and The Griffin Institute, Northwick Park & Saint Mark's Hospital, London, UK
| | - Rishbha Dua
- Regenerative Biomaterials Group, The RAFT Institute and The Griffin Institute, Northwick Park & Saint Mark's Hospital, London, UK
| | - Karin Greco
- Division of Surgery and Interventional Science, University College London, London, UK.,The Griffin Institute, Northwick Park and St Mark's Hospital, London, UK
| | - Jung-Hwan Lee
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea.,Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea.,Department of Nanobiomedical Science & BK21 Plus NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea.,Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Hae-Won Kim
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea.,Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea.,Department of Nanobiomedical Science & BK21 Plus NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea.,Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Jonathan Knowles
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea.,Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea.,Department of Nanobiomedical Science & BK21 Plus NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea.,Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan, Republic of Korea.,Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, UK
| | - Elena García-Gareta
- Regenerative Biomaterials Group, The RAFT Institute and The Griffin Institute, Northwick Park & Saint Mark's Hospital, London, UK.,Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, UK
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The Structural Characteristics of Collagen in Swim Bladders with 25-Year Sequence Aging: The Impact of Age. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11104578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Aged swim bladders from the yellow drum (Protonibea diacanthus) are considered collagen-based functional food with extremely high market value. The structural integrity of collagen may be crucial for its biological functions. In the current study, swim bladders with 25-year-old sequences were collected and found to be basically composed of collagen. Then, thermogravimetry (TG), differential scanning calorimetry (DSC), X-ray diffraction (XRD), and attenuated total reflectance–Fourier transform infrared spectroscopy (ATR–FTIR) were conducted to evaluate the integrity of the peptide chain and triple helix in the collagen. The structures of microfibers and fiber bundles were revealed with atomic force microscopy (AFM), scanning electrical microscopy (SEM), and optical spectroscopy. The collagens in the aged swim bladders were found to have similar thermal properties to those of fresh ones, but the relative content of the triple helixes was found to be negatively correlated with aging. The secondary structure of the remaining triple helix showed highly retained characteristics as in fresh swim bladders, and the microfibrils also showed a similar D-period to that of the fresh one. However, the fiber bundles displayed more compact and thick characteristics after years of storage. These results indicate that despite 25 years of aging, the collagen in the swim bladders was still partially retained with structures.
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Chrabaszcz K, Kaminska K, Song CL, Morikawa J, Kujdowicz M, Michalczyk E, Smeda M, Stojak M, Jasztal A, Kazarian SG, Malek K. Fourier Transform Infrared Polarization Contrast Imaging Recognizes Proteins Degradation in Lungs upon Metastasis from Breast Cancer. Cancers (Basel) 2021; 13:cancers13020162. [PMID: 33418894 PMCID: PMC7825053 DOI: 10.3390/cancers13020162] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/18/2020] [Accepted: 01/01/2021] [Indexed: 01/19/2023] Open
Abstract
Simple Summary Several lung extracellular matrix (ECM) proteins are involved in the formation of a metastatic niche in pulmonary metastasis and they accompany the cancer progression. Its gradual remodeling does not induce compositional changes of its components, but it is related to the re-distribution of individual proteins, their cross-linking and spatial arrangement within the tissue. The combination of FTIR and FTIR polarization contrast (PCI) imaging, as rapid, non-destructive, and label-free techniques, allows for the determination of protein alternations occurring in lungs that are affected by breast cancer metastasis. Both have the potential to characterize biochemical changes of the metastatic target, can determine phenotypes of tissue structures, and deliver a novel spectroscopic marker panel for the recognition of metastasis environment. Abstract The current understanding of mechanisms underlying the formation of metastatic tumors has required multi-parametric methods. The tissue micro-environment in secondary organs is not easily evaluated due to complex interpretation with existing tools. Here, we demonstrate the detection of structural modifications in proteins using emerging Fourier Transform Infrared (FTIR) imaging combined with light polarization. We investigated lungs affected by breast cancer metastasis in the orthotopic murine model from the pre-metastatic phase, through early micro-metastasis, up to an advanced phase, in which solid tumors are developed in lung parenchyma. The two IR-light polarization techniques revealed, for the first time, the orientational ordering of proteins upon the progression of pulmonary metastasis of breast cancer. Their distribution was complemented by detailed histological examination. Polarized contrast imaging recognised tissue structures of lungs and showed deformations in protein scaffolds induced by inflammatory infiltration, fibrosis, and tumor growth. This effect was recognised by not only changes in absorbance of the spectral bands but also by the band shifts and the appearance of new signals. Therefore, we proposed this approach as a useful tool for evaluation of progressive and irreversible molecular changes that occur sequentially in the metastatic process.
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Affiliation(s)
- Karolina Chrabaszcz
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2 St., 30-387 Krakow, Poland; (K.C.); (K.K.); (M.K.); (E.M.)
| | - Katarzyna Kaminska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2 St., 30-387 Krakow, Poland; (K.C.); (K.K.); (M.K.); (E.M.)
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, Bobrzynskiego 14 St., 30-384 Krakow, Poland; (M.S.); (M.S.); (A.J.)
| | - Cai Li Song
- Department of Chemical Engineering, Imperial London College, South Kensington Campus, London SW72AZ, UK;
| | - Junko Morikawa
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan;
| | - Monika Kujdowicz
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2 St., 30-387 Krakow, Poland; (K.C.); (K.K.); (M.K.); (E.M.)
- Department of Pathomorphology, Medical Faculty, Jagiellonian University Medical College, Grzegorzecka 16 St., 31-531 Krakow, Poland
| | - Ewelina Michalczyk
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2 St., 30-387 Krakow, Poland; (K.C.); (K.K.); (M.K.); (E.M.)
| | - Marta Smeda
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, Bobrzynskiego 14 St., 30-384 Krakow, Poland; (M.S.); (M.S.); (A.J.)
| | - Marta Stojak
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, Bobrzynskiego 14 St., 30-384 Krakow, Poland; (M.S.); (M.S.); (A.J.)
| | - Agnieszka Jasztal
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, Bobrzynskiego 14 St., 30-384 Krakow, Poland; (M.S.); (M.S.); (A.J.)
| | - Sergei G. Kazarian
- Department of Chemical Engineering, Imperial London College, South Kensington Campus, London SW72AZ, UK;
- Correspondence: (S.G.K.); (K.M.)
| | - Kamilla Malek
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2 St., 30-387 Krakow, Poland; (K.C.); (K.K.); (M.K.); (E.M.)
- Correspondence: (S.G.K.); (K.M.)
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32
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Vatić S, Mirković N, Milošević JR, Jovčić B, Polović NĐ. Broad range of substrate specificities in papain and fig latex enzymes preparations improve enumeration of Listeria monocytogenes. Int J Food Microbiol 2020; 334:108851. [PMID: 32911158 DOI: 10.1016/j.ijfoodmicro.2020.108851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 11/28/2022]
Abstract
Numerous applications of proteolytic enzymes include dissociation of fermented meat products for the enumeration of `foodborne pathogenic bacteria. The use of trypsin for this cause is abandoned due to the high concentration of the enzyme affecting released bacteria. Papain, as a suggested replacement, and fig latex preparation with high extent of papain-like enzymes have the potential to be applied for bacteria enumeration. Both enzymatic preparations, originating from papaya and fig, showed a broader range of substrate specificities including gelatinolytic activity, especially prominent in the case of ficin and attributed to both, cysteine protease ficin and serine protease by the analysis of 2D zymography with specific inhibitors. The activity towards native collagen, mild in the case of papain, and extensive in the case of fig latex was proved by structural analysis of digested collagen by infrared spectroscopy. Further exploration of their potential for dissociation of fermented meat products showed that both papain and fig latex enzymes are stable in the presence of detergents Tween 20 and Triton X-100 and effective in the enumeration of Listeria monocytogenes. Gelatenolytic activity, and at least partial collagenolytic activity and stability in procedure conditions make papaya and fig latex proteases potent for this application in significantly lower concentrations than previously used enzymes. As a mixture of proteolytic enzymes with divergent characteristics, fig latex preparation shows higher efficiency in Listeria monocytogenes release than papain, conserved even in the presence of stronger non-ionic detergent Triton X-100.
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Affiliation(s)
- Saša Vatić
- Department of Biochemistry, University of Belgrade - Faculty of Chemistry, Belgrade, Serbia; Institute for Chemistry in Medicine, University of Belgrade - Faculty of Medicine, Belgrade, Serbia
| | - Nemanja Mirković
- Laboratory for Molecular Microbiology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia; Department for Food Microbiology, Faculty of Agriculture, University of Belgrade, Belgrade, Serbia
| | - Jelica R Milošević
- Department of Biochemistry, University of Belgrade - Faculty of Chemistry, Belgrade, Serbia
| | - Branko Jovčić
- Laboratory for Molecular Microbiology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia; Department of Biochemistry and Molecular Biology, University of Belgrade - Faculty of Biology, Belgrade, Serbia
| | - Natalija Đ Polović
- Department of Biochemistry, University of Belgrade - Faculty of Chemistry, Belgrade, Serbia.
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33
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Biophysical and Lipidomic Biomarkers of Cardiac Remodeling Post-Myocardial Infarction in Humans. Biomolecules 2020; 10:biom10111471. [PMID: 33105904 PMCID: PMC7690619 DOI: 10.3390/biom10111471] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/14/2020] [Accepted: 10/21/2020] [Indexed: 11/16/2022] Open
Abstract
Few studies have analyzed the potential of biophysical parameters as markers of cardiac remodeling post-myocardial infarction (MI), particularly in human hearts. Fourier transform infrared spectroscopy (FTIR) illustrates the overall changes in proteins, nucleic acids and lipids in a single signature. The aim of this work was to define the FTIR and lipidomic pattern for human left ventricular remodeling post-MI. A total of nine explanted hearts from ischemic cardiomyopathy patients were collected. Samples from the right ventricle (RV), left ventricle (LV) and infarcted left ventricle (LV INF) were subjected to biophysical (FTIR and differential scanning calorimetry, DSC) and lipidomic (liquid chromatography-high-resolution mass spectrometry, LC-HRMS) studies. FTIR evidenced deep alterations in the myofibers, extracellular matrix proteins, and the hydric response of the LV INF compared to the RV or LV from the same subject. The lipid and esterified lipid FTIR bands were enhanced in LV INF, and both lipid indicators were tightly and positively correlated with remodeling markers such as collagen, lactate, polysaccharides, and glycogen in these samples. Lipidomic analysis revealed an increase in several species of sphingomyelin (SM), hexosylceramide (HexCer), and cholesteryl esters combined with a decrease in glycerophospholipids in the infarcted tissue. Our results validate FTIR indicators and several species of lipids as useful markers of left ventricular remodeling post-MI in humans.
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34
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O'Neill Moore S, Grubb TJ, Kothapalli CR. Insights into the biophysical forces between proteins involved in elastic fiber assembly. J Mater Chem B 2020; 8:9239-9250. [PMID: 32966543 DOI: 10.1039/d0tb01591a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Elastogenesis is a complex process beginning with transcription, translation, and extracellular release of precursor proteins leading to crosslinking, deposition, and assembly of ubiquitous elastic fibers. While the biochemical pathways by which elastic fibers are assembled are known, the biophysical forces mediating the interactions between the constituent proteins are unknown. Using atomic force microscopy, we quantified the adhesive forces among the elastic fiber components, primarily between tropoelastin, elastin binding protein (EBP), fibrillin-1, fibulin-5, and lysyl oxidase-like 2 (LOXL2). The adhesive forces between tropoelastin and other tissue-derived proteins such as insoluble elastin, laminin, and type I collagens were also assessed. The adhesive forces between tropoelastin and laminin were strong (1767 ± 126 pN; p < 10-5vs. all others), followed by forces (≥200 pN) between tropoelastin and human collagen, mature elastin, or tropoelastin. The adhesive forces between tropoelastin and rat collagen, EBP, fibrillin-1, fibulin-5, and LOXL2 coated on fibrillin-1 were in the range of 100-200 pN. The forces between tropoelastin and LOXL2, LOXL2 and fibrillin-1, LOXL2 and fibulin-5, and fibrillin-1 and fibulin-5 were less than 100 pN. Introducing LOXL2 decreased the adhesive forces between the tropoelastin monomers by ∼100 pN. The retraction phase of force-deflection curves was fitted to the worm-like chain model to calculate the rigidity and flexibility of these proteins as they unfolded. The results provided insights into how each constituent's stretching under deformation contributes to structural and mechanical characteristics of these fibers and to elastic fiber assembly.
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Affiliation(s)
- Sean O'Neill Moore
- Department of Chemical and Biomedical Engineering, FH 460, Cleveland State University, 2121 Euclid Avenue, Cleveland, OH 44115, USA.
| | - Tyler Jacob Grubb
- Department of Chemical and Biomedical Engineering, FH 460, Cleveland State University, 2121 Euclid Avenue, Cleveland, OH 44115, USA.
| | - Chandrasekhar R Kothapalli
- Department of Chemical and Biomedical Engineering, FH 460, Cleveland State University, 2121 Euclid Avenue, Cleveland, OH 44115, USA.
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35
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Linking structural and compositional changes in archaeological human bone collagen: an FTIR-ATR approach. Sci Rep 2020; 10:17888. [PMID: 33087827 PMCID: PMC7578014 DOI: 10.1038/s41598-020-74993-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 08/06/2020] [Indexed: 12/19/2022] Open
Abstract
Collagen is the main structural and most abundant protein in the human body, and it is routinely extracted and analysed in scientific archaeology. Its degree of preservation is, therefore, crucial and several approaches are used to determine it. Spectroscopic techniques provide a cost-effective, non-destructive method to investigate the molecular structure, especially when combined with multivariate statistics (chemometric approach). In this study, we used FTIR-ATR spectroscopy to characterise collagen extracted from skeletons recovered from necropoleis in NW Spain spanning from the Bronze Age to eighteenth century AD. Principal components analysis was performed on a selection of bands and structural equation models (SEM) were developed to relate the collagen quality indicators to collagen structural change. Four principal components represented: (i) Cp1, transformations of the backbone protein with a residual increase in proteoglycans; (ii) Cp2, protein transformations not accompanied by changes in proteoglycans abundance; (iii) Cp3, variations in aliphatic side chains and (iv) Cp4, absorption of the OH of carbohydrates and amide. Highly explanatory SEM models were obtained for the traditional collagen quality indicators (collagen yield, C, N, C:N), but no relationship was found between quality and δ13C and δ15N ratios. The observed decrease in C and N content and increase in C:N ratios is controlled by the degradation of protein backbone components and the relative preservation of carbon-rich compounds, proteoglycans and, to a lesser extent, aliphatic moieties. Our results suggest that FTIR-ATR is an ideal technique for collagen characterization/pre-screening for palaeodiet, mobility and radiocarbon research.
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Gieroba B, Przekora A, Kalisz G, Kazimierczak P, Song CL, Wojcik M, Ginalska G, Kazarian SG, Sroka-Bartnicka A. Collagen maturity and mineralization in mesenchymal stem cells cultured on the hydroxyapatite-based bone scaffold analyzed by ATR-FTIR spectroscopic imaging. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111634. [PMID: 33321672 DOI: 10.1016/j.msec.2020.111634] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/09/2020] [Accepted: 10/13/2020] [Indexed: 12/17/2022]
Abstract
Modern bone tissue engineering is based on the use of implants in the form of biomaterials, which are used as scaffolds for osteoprogenitor or stem cells. The task of the scaffolds is to temporarily sustain the function, proliferation and differentiation of bone tissue to enable its regeneration. The aim of this work is to use the macro ATR-FTIR spectroscopic imaging for analysis of the ceramic-based biomaterial (chitosan/β-1,3-glucan/hydroxyapatite). Specifically, during long-term culture of mesenchymal cells derived from adipose tissue (ADSCs) and bone marrow (BMDSCs) on the surface of scaffold. Infrared spectroscopy allows the acquisition of information on both the organic and inorganic parts of the tested composite. This innovative spectroscopic approach proved to be very suitable for studying the formation of new bone tissue and ECM components, sample staining and demineralization are not required and consequently the approach is rapid and cost-effective. The novelty of this study focuses on the innovatory use of ATR-FTIR imaging to evaluate the molecular structure and maturity of collagen as well as mineral matrix formation and crystallization in the context of bone regenerative medicine. Our research has shown that the biomaterial investigated on this work facilitates the formation of valid bone ECM of the stem cells types studied, as a result of the synthesis of type I collagen and mineral content deposition. Nevertheless, ADSC cells have been proven to produce a greater amount of collagen with a lower content of helical secondary structures, at the same time showing a higher mineralization intensity compared to BMDSC cells. Considering the above results, it could be stated that the developed scaffold is a promising material for biomedical applications, including modification of bone implants to increase their biocompatibility.
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Affiliation(s)
- Barbara Gieroba
- Department of Biopharmacy, Medical University of Lublin, ul. Chodzki 4a, 20-093 Lublin, Poland
| | - Agata Przekora
- Department of Biochemistry and Biotechnology, Medical University of Lublin, ul. Chodzki 1, 20-093 Lublin, Poland.
| | - Grzegorz Kalisz
- Department of Biopharmacy, Medical University of Lublin, ul. Chodzki 4a, 20-093 Lublin, Poland
| | - Paulina Kazimierczak
- Department of Biochemistry and Biotechnology, Medical University of Lublin, ul. Chodzki 1, 20-093 Lublin, Poland
| | - Cai Li Song
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Michal Wojcik
- Department of Biochemistry and Biotechnology, Medical University of Lublin, ul. Chodzki 1, 20-093 Lublin, Poland
| | - Grazyna Ginalska
- Department of Biochemistry and Biotechnology, Medical University of Lublin, ul. Chodzki 1, 20-093 Lublin, Poland
| | - Sergei G Kazarian
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom.
| | - Anna Sroka-Bartnicka
- Department of Biopharmacy, Medical University of Lublin, ul. Chodzki 4a, 20-093 Lublin, Poland; Department of Genetics and Microbiology, Institute of Biological Sciences, Maria Curie-Sklodowska University, ul. Akademicka 19, 20-033 Lublin, Poland.
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Agbaje OBA, George SC, Zhang Z, Brock GA, Holmer LE. Characterization of organophosphatic brachiopod shells: spectroscopic assessment of collagen matrix and biomineral components. RSC Adv 2020; 10:38456-38467. [PMID: 35517531 PMCID: PMC9057340 DOI: 10.1039/d0ra07523j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 09/29/2020] [Indexed: 12/21/2022] Open
Abstract
The shells of linguloid brachiopods such as Lingula and Discinisca are inorganic-organic nanocomposites with a mineral phase of calcium phosphate (Ca-phosphate). Collagen, the main extracellular matrix in Ca-phosphatic vertebrate skeletons, has not previously been clearly resolved at the molecular level in organophosphatic brachiopods. Here, modern and recently-alive linguliform brachiopod shells of Lingula and Discinisca have been studied by microRaman spectroscopy, Fourier transform infrared spectroscopy, field emission gun scanning electron microscopy, and thermal gravimetric analysis. For the first time, biomineralized collagen matrix and Ca-phosphate components were simultaneously identified, showing that the collagen matrix is an important moiety in organophosphatic brachiopod shells, in addition to prevalent chitin. Stabilized nanosized apatitic biominerals (up to ∼50 nm) permeate the framework of organic fibrils. There is a ∼2.5-fold higher wt% of carbonate (CO3 2-) in Lingula versus Discinisca shells. Both microRaman spectroscopy and infrared spectra show transient amorphous Ca-phosphate and octacalcium phosphate components. For the first time, trivalent moieties at ∼1660 cm-1 and divalent moieties at ∼1690 cm-1 in the amide I spectral region were identified. These are related to collagen cross-links that are abundant in mineralized tissues, and could be important features in the biostructural and mechanical properties of Ca-phosphate shell biominerals. This work provides a critical new understanding of organophosphatic brachiopod shells, which are some of the earliest examples of biomineralization in still-living animals that appeared in the Cambrian radiation.
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Affiliation(s)
- Oluwatoosin B A Agbaje
- Department of Earth Sciences, Palaeobiology, Uppsala University Uppsala Sweden .,Department of Earth and Environmental Sciences and MQ Marine Research Centre, Macquarie University Sydney Australia.,Department of Biological Sciences, Macquarie University Sydney Australia
| | - Simon C George
- Department of Earth and Environmental Sciences and MQ Marine Research Centre, Macquarie University Sydney Australia
| | - Zhifei Zhang
- State Key Laboratory of Continental Dynamics, Shaanxi Key Laboratory of Early Life & Environments, Department of Geology, Northwest University Xi'an 710069 China
| | - Glenn A Brock
- Department of Biological Sciences, Macquarie University Sydney Australia.,State Key Laboratory of Continental Dynamics, Shaanxi Key Laboratory of Early Life & Environments, Department of Geology, Northwest University Xi'an 710069 China
| | - Lars E Holmer
- Department of Earth Sciences, Palaeobiology, Uppsala University Uppsala Sweden .,State Key Laboratory of Continental Dynamics, Shaanxi Key Laboratory of Early Life & Environments, Department of Geology, Northwest University Xi'an 710069 China
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Moreau J, Bouzy P, Guillard J, Untereiner V, Garnotel R, Marchal A, Gobinet C, Terryn C, Sockalingum GD, Thiéfin G. Analysis of Hepatic Fibrosis Characteristics in Cirrhotic Patients with and without Hepatocellular Carcinoma by FTIR Spectral Imaging. Molecules 2020; 25:molecules25184092. [PMID: 32906799 PMCID: PMC7570752 DOI: 10.3390/molecules25184092] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/31/2020] [Accepted: 09/04/2020] [Indexed: 12/12/2022] Open
Abstract
The evolution of cirrhosis is marked by quantitative and qualitative modifications of the fibrosis tissue and an increasing risk of complications such as hepatocellular carcinoma (HCC). Our purpose was to identify by FTIR imaging the spectral characteristics of hepatic fibrosis in cirrhotic patients with and without HCC. FTIR images were collected at projected pixel sizes of 25 and 2.7 μm from paraffinized hepatic tissues of five patients with uncomplicated cirrhosis and five cirrhotic patients with HCC and analyzed by k-means clustering. When compared to the adjacent histological section, the spectral clusters corresponding to hepatic fibrosis and regeneration nodules were easily identified. The fibrosis area estimated by FTIR imaging was correlated to that evaluated by digital image analysis of histological sections and was higher in patients with HCC compared to those without complications. Qualitative differences were also observed when fibrosis areas were specifically targeted at higher resolution. The partition in two clusters of the fibrosis tissue highlighted subtle differences in the spectral characteristics of the two groups of patients. These data show that the quantitative and qualitative changes of fibrosis tissue occurring during the course of cirrhosis are detectable by FTIR imaging, suggesting the possibility of subclassifying cirrhosis into different steps of severity.
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Affiliation(s)
- Johanna Moreau
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51097 Reims, France; (J.M.); (P.B.); (J.G.); (R.G.); (A.M.); (C.G.); (G.D.S.)
- Service d’Hépato-Gastroentérologie et de Cancérologie Digestive, Centre Hospitalier Universitaire de Reims, 51092 Reims, France
| | - Pascaline Bouzy
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51097 Reims, France; (J.M.); (P.B.); (J.G.); (R.G.); (A.M.); (C.G.); (G.D.S.)
| | - Julien Guillard
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51097 Reims, France; (J.M.); (P.B.); (J.G.); (R.G.); (A.M.); (C.G.); (G.D.S.)
| | - Valérie Untereiner
- Université de Reims Champagne-Ardenne, Plateforme en Imagerie Cellulaire et Tissulaire (PICT), 51097 Reims Cedex, France; (V.U.); (C.T.)
| | - Roselyne Garnotel
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51097 Reims, France; (J.M.); (P.B.); (J.G.); (R.G.); (A.M.); (C.G.); (G.D.S.)
- Laboratoire de Biochimie-Pharmacologie-Toxicologie, Centre Hospitalier Universitaire de Reims, 51092 Reims, France
| | - Aude Marchal
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51097 Reims, France; (J.M.); (P.B.); (J.G.); (R.G.); (A.M.); (C.G.); (G.D.S.)
- Service d’Anatomie et Cytologie Pathologique, Centre Hospitalier Universitaire de Reims, 51100 Reims, France
| | - Cyril Gobinet
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51097 Reims, France; (J.M.); (P.B.); (J.G.); (R.G.); (A.M.); (C.G.); (G.D.S.)
| | - Christine Terryn
- Université de Reims Champagne-Ardenne, Plateforme en Imagerie Cellulaire et Tissulaire (PICT), 51097 Reims Cedex, France; (V.U.); (C.T.)
| | - Ganesh D. Sockalingum
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51097 Reims, France; (J.M.); (P.B.); (J.G.); (R.G.); (A.M.); (C.G.); (G.D.S.)
| | - Gérard Thiéfin
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51097 Reims, France; (J.M.); (P.B.); (J.G.); (R.G.); (A.M.); (C.G.); (G.D.S.)
- Service d’Hépato-Gastroentérologie et de Cancérologie Digestive, Centre Hospitalier Universitaire de Reims, 51092 Reims, France
- Correspondence: ; Tel.: +33-6-87517-344; Fax: +33-3-26788-836
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Mazarakis N, Vongsvivut J, Bambery KR, Ververis K, Tobin MJ, Royce SG, Samuel CS, Snibson KJ, Licciardi PV, Karagiannis TC. Investigation of molecular mechanisms of experimental compounds in murine models of chronic allergic airways disease using synchrotron Fourier-transform infrared microspectroscopy. Sci Rep 2020; 10:11713. [PMID: 32678217 PMCID: PMC7366655 DOI: 10.1038/s41598-020-68671-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 06/29/2020] [Indexed: 12/31/2022] Open
Abstract
The ovalbumin-induced (OVA) chronic allergic airways murine model is a well-established model for investigating pre-clinical therapies for chronic allergic airways diseases, such as asthma. Here, we examined the effects of several experimental compounds with potential anti-asthmatic effects including resveratrol (RV), relaxin (RLN), l-sulforaphane (LSF), valproic acid (VPA), and trichostatin A (TSA) using both a prevention and reversal model of chronic allergic airways disease. We undertook a novel analytical approach using focal plane array (FPA) and synchrotron Fourier-transform infrared (S-FTIR) microspectroscopic techniques to provide new insights into the mechanisms of action of these experimental compounds. Apart from the typical biological effects, S-FTIR microspectroscopy was able to detect changes in nucleic acids and protein acetylation. Further, we validated the reduction in collagen deposition induced by each experimental compound evaluated. Although this has previously been observed with conventional histological methods, the S-FTIR technique has the advantage of allowing identification of the type of collagen present. More generally, our findings highlight the potential utility of S-FTIR and FPA-FTIR imaging techniques in enabling a better mechanistic understanding of novel asthma therapeutics.
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Affiliation(s)
- Nadia Mazarakis
- Epigenomic Medicine Laboratory, Department of Diabetes, Central Clinical School, Monash University, Alfred Centre, 99 Commercial Road, Melbourne, VIC, 3004, Australia.,Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, VIC, 3010, Australia.,Murdoch Children's Research Institute, Melbourne, VIC, 3004, Australia
| | | | | | - Katherine Ververis
- Epigenomic Medicine Laboratory, Department of Diabetes, Central Clinical School, Monash University, Alfred Centre, 99 Commercial Road, Melbourne, VIC, 3004, Australia
| | - Mark J Tobin
- ANSTO Australian Synchrotron, Clayton, VIC, 3168, Australia
| | - Simon G Royce
- Department of Pharmacology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3168, Australia
| | - Chrishan S Samuel
- Department of Pharmacology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3168, Australia
| | - Kenneth J Snibson
- Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Paul V Licciardi
- Murdoch Children's Research Institute, Melbourne, VIC, 3004, Australia.,Department of Paediatrics, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Tom C Karagiannis
- Epigenomic Medicine Laboratory, Department of Diabetes, Central Clinical School, Monash University, Alfred Centre, 99 Commercial Road, Melbourne, VIC, 3004, Australia. .,Department of Clinical Pathology, University of Melbourne, Parkville, VIC, 3010, Australia.
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40
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Mechanobiologically induced bone-like nodules: Matrix characterization from micro to nanoscale. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2020; 29:102256. [PMID: 32615337 DOI: 10.1016/j.nano.2020.102256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/15/2020] [Accepted: 06/19/2020] [Indexed: 12/12/2022]
Abstract
In bone tissue engineering, stem cells are known to form inhomogeneous bone-like nodules on a micrometric scale. Herein, micro- and nano-infrared (IR) micro-spectroscopies were used to decipher the chemical composition of the bone-like nodule. Histological and immunohistochemical analyses revealed a cohesive tissue with bone-markers positive cells surrounded by dense mineralized type-I collagen. Micro-IR gathered complementary information indicating a non-mature collagen at the top and periphery and a mature collagen within the nodule. Atomic force microscopy combined to IR (AFM-IR) analyses showed distinct spectra of "cell" and "collagen" rich areas. In contrast to the "cell" area, spectra of "collagen" area revealed the presence of carbohydrate moieties of collagen and/or the presence of glycoproteins. However, it was not possible to determine the collagen maturity, due to strong bands overlapping and/or possible protein orientation effects. Such findings could help developing protocols to allow a reliable characterization of in vitro generated complex bone tissues.
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41
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Ebrahimi M, Botelho M, Lu W, Monmaturapoj N. Development of nanocomposite collagen/
HA
/
β‐TCP
scaffolds with tailored gradient porosity and permeability using vitamin E. J Biomed Mater Res A 2020; 108:2379-2394. [DOI: 10.1002/jbm.a.36990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 03/28/2020] [Accepted: 04/04/2020] [Indexed: 12/21/2022]
Affiliation(s)
- Mehdi Ebrahimi
- Restorative Dental Sciences, Prince Philip Dental Hospital The University of Hong Kong Hong Kong
| | - Michael Botelho
- Restorative Dental Sciences, Prince Philip Dental Hospital The University of Hong Kong Hong Kong
| | - William Lu
- Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine The University of Hong Kong Hong Kong
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Stani C, Vaccari L, Mitri E, Birarda G. FTIR investigation of the secondary structure of type I collagen: New insight into the amide III band. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 229:118006. [PMID: 31927236 DOI: 10.1016/j.saa.2019.118006] [Citation(s) in RCA: 142] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 12/02/2019] [Accepted: 12/27/2019] [Indexed: 06/10/2023]
Abstract
This work presents a thorough study on the Amide III band in fibrous proteins using Fourier Transformed Infrared Spectroscopy (FTIR). Type I collagen was chosen as a model for this family of proteins, not only because of its important role in mammalian tissues, but also for its involvement in several pathologies. In order to disclose the conformational information contained in the collagen bands, the spectral characteristics of Amide III of type I collagen were related to the ones of Amide I band, performing experiments of thermal denaturation of the protein in acidic solution. Data acquired allowed to observe the protein unfolding and retrieve information about its structural arrangements during the thermal cycle. Taking as guideline the well-known behaviour of the Amide I band, we correlated the structural changes deducible from Amide I analysis with the ones detectable for Amide III band, by exploiting three spectral analysis techniques, namely 2D-correlation analysis, second derivative analysis, and peak-fitting. This approach enabled us to jointly support the obtained results and finally to assign the components of the Amide III of a typical fibrous protein, such as type I collagen, to its characteristic secondary structure.
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Affiliation(s)
- Chiaramaria Stani
- Elettra - Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Lisa Vaccari
- Elettra - Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Elisa Mitri
- Elettra - Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Giovanni Birarda
- Elettra - Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy.
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43
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Terzi A, Gallo N, Bettini S, Sibillano T, Altamura D, Madaghiele M, De Caro L, Valli L, Salvatore L, Sannino A, Giannini C. Sub‐ and Supramolecular X‐Ray Characterization of Engineered Tissues from Equine Tendon, Bovine Dermis, and Fish Skin Type‐I Collagen. Macromol Biosci 2020; 20:e2000017. [DOI: 10.1002/mabi.202000017] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 01/23/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Alberta Terzi
- Institute of Crystallography (IC)National Research Council Bari 70126 Italy
| | - Nunzia Gallo
- Department of Engineering for InnovationUniversity of Salento Lecce 73100 Italy
| | - Simona Bettini
- Department of Engineering for InnovationUniversity of Salento Lecce 73100 Italy
| | - Teresa Sibillano
- Institute of Crystallography (IC)National Research Council Bari 70126 Italy
| | - Davide Altamura
- Institute of Crystallography (IC)National Research Council Bari 70126 Italy
| | - Marta Madaghiele
- Department of Engineering for InnovationUniversity of Salento Lecce 73100 Italy
| | - Liberato De Caro
- Institute of Crystallography (IC)National Research Council Bari 70126 Italy
| | - Ludovico Valli
- Department of Biological and Environmental Sciences and TechnologiesUniversity of Salento Lecce 73100 Italy
| | - Luca Salvatore
- Department of Engineering for InnovationUniversity of Salento Lecce 73100 Italy
| | - Alessandro Sannino
- Department of Engineering for InnovationUniversity of Salento Lecce 73100 Italy
| | - Cinzia Giannini
- Institute of Crystallography (IC)National Research Council Bari 70126 Italy
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44
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Boatman EM, Goodwin MB, Holman HYN, Fakra S, Zheng W, Gronsky R, Schweitzer MH. Mechanisms of soft tissue and protein preservation in Tyrannosaurus rex. Sci Rep 2019; 9:15678. [PMID: 31666554 PMCID: PMC6821828 DOI: 10.1038/s41598-019-51680-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 09/29/2019] [Indexed: 01/08/2023] Open
Abstract
The idea that original soft tissue structures and the native structural proteins comprising them can persist across geological time is controversial, in part because rigorous and testable mechanisms that can occur under natural conditions, resulting in such preservation, have not been well defined. Here, we evaluate two non-enzymatic structural protein crosslinking mechanisms, Fenton chemistry and glycation, for their possible contribution to the preservation of blood vessel structures recovered from the cortical bone of a Tyrannosaurus rex (USNM 555000 [formerly, MOR 555]). We demonstrate the endogeneity of the fossil vessel tissues, as well as the presence of type I collagen in the outermost vessel layers, using imaging, diffraction, spectroscopy, and immunohistochemistry. Then, we use data derived from synchrotron FTIR studies of the T. rex vessels to analyse their crosslink character, with comparison against two non-enzymatic Fenton chemistry- and glycation-treated extant chicken samples. We also provide supporting X-ray microprobe analyses of the chemical state of these fossil tissues to support our conclusion that non-enzymatic crosslinking pathways likely contributed to stabilizing, and thus preserving, these T. rex vessels. Finally, we propose that these stabilizing crosslinks could play a crucial role in the preservation of other microvascular tissues in skeletal elements from the Mesozoic.
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Affiliation(s)
- Elizabeth M Boatman
- Department of Engineering, Wake Forest University, Winston Salem, NC, 27101, USA.
| | - Mark B Goodwin
- Museum of Paleontology, University of California, Berkeley, CA, 94720, USA
| | - Hoi-Ying N Holman
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Sirine Fakra
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Wenxia Zheng
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA
| | - Ronald Gronsky
- Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA
| | - Mary H Schweitzer
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA
- Department of Geology, Lund University, Lund, Sweden
- North Carolina Museum of Natural Sciences, Raleigh, NC, 27601, USA
- Museum of the Rockies, Montana State University, Bozeman, MT, 59715, USA
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45
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Nadine S, Patrício SG, Correia CR, Mano JF. Dynamic microfactories co-encapsulating osteoblastic and adipose-derived stromal cells for the biofabrication of bone units. Biofabrication 2019; 12:015005. [DOI: 10.1088/1758-5090/ab3e16] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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46
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Terzi A, Gallo N, Bettini S, Sibillano T, Altamura D, Campa L, Natali ML, Salvatore L, Madaghiele M, De Caro L, Valli L, Sannino A, Giannini C. Investigations of Processing-Induced Structural Changes in Horse Type-I Collagen at Sub and Supramolecular Levels. Front Bioeng Biotechnol 2019; 7:203. [PMID: 31552231 PMCID: PMC6736615 DOI: 10.3389/fbioe.2019.00203] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 08/06/2019] [Indexed: 11/19/2022] Open
Abstract
The aim of this work is to evaluate the effects of different extraction and material processing protocols on the collagen structure and hierarchical organization of equine tendons. Wide and Small Angle X-ray Scattering investigations on raw powders and thin films revealed that not only the extraction and purification treatments, but also the processing conditions may affect the extent of the protein crystalline domain and induce a nanoscale “shield effect.” This is due to the supramolecular fiber organization, which protects the atomic scale structure from the modifications that occur during fabrication protocols. Moreover, X-ray analyses and Fourier Transform Infrared spectroscopy performed on the biomaterial sheds light on the relationship between processing conditions, triple helical content and the organization in atomic and nanoscale domains. It was found that the mechanical homogenization of the slurry in acidic solution is a treatment that ensures a high content of super-organization of collagen into triple helices and a lower crystalline domain in the material. Finally, mechanical tensile tests were carried out, proving that the acidic solution is the condition which most enhances both mechanical stiffness and supramolecular fiber organization of the films.
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Affiliation(s)
- Alberta Terzi
- Institute of Crystallography (IC), National Research Council, Bari, Italy
| | - Nunzia Gallo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Simona Bettini
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Teresa Sibillano
- Institute of Crystallography (IC), National Research Council, Bari, Italy
| | - Davide Altamura
- Institute of Crystallography (IC), National Research Council, Bari, Italy
| | | | | | - Luca Salvatore
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Marta Madaghiele
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Liberato De Caro
- Institute of Crystallography (IC), National Research Council, Bari, Italy
| | - Ludovico Valli
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Cinzia Giannini
- Institute of Crystallography (IC), National Research Council, Bari, Italy
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47
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Rahman MS, Go GW, Seo JK, Gul K, Choi SG, Yang HS. Thiol concentration, structural characteristics and gelling properties of bovine heart protein concentrates. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.05.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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48
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Vásquez-Rivera A, Oldenhof H, Hilfiker A, Wolkers WF. Spectral fingerprinting of decellularized heart valve scaffolds. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:95-102. [PMID: 30769156 DOI: 10.1016/j.saa.2019.02.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 01/31/2019] [Accepted: 02/03/2019] [Indexed: 06/09/2023]
Abstract
Decellularized heart valves hold promise for their use as bioscaffolds in cardiovascular surgery. Quality assessment of heart valves after decellularization processing and/or storage is time consuming and destructive. Fourier transform infrared spectroscopy (FTIR) allows rapid non-invasive assessment of biomolecular structures in tissues. In this study, IR-spectra taken from different layers of the pulmonary artery trunk and leaflet tissues of decellularized porcine heart valves were compared with those of pure collagen and elastin, the main protein components in these tissues. In addition, spectral changes associated with aging and oxidative damage were investigated. Infrared absorbance spectra of the arteria intima and media layer were found to be very similar, whereas distinct differences were observed when compared with spectra of the externa layer. In the latter, the shape of the CH-stretching vibration region (3050-2800 cm-1) resembled that of pure collagen. Also, pronounced νCOOH and amide-II bands and a relatively high content of α-helical structures in the externa layer indicated the presence of collagen in this layer. The externa layer of the artery appeared to be sensitive to collagenase treatment, whereas the media and intima layer were particularly affected by elastase and not by collagenase treatment. Protein conformational changes after treatment with collagenase were observed in all three layers. Collagenase treatment completely degraded the leaflet tissue sections. Spectra were also collected from scaffolds after 2 and 12 weeks storage at 37 °C, and after induced oxidative damage. Spectral changes related to aging and oxidative damage were particularly evident in the CH-stretching region, whereas the shape of the amide-I band, reflecting the overall protein secondary structure, remained unaltered.
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Affiliation(s)
| | - Harriëtte Oldenhof
- Unit for Reproductive Medicine, Clinic for Horses, University of Veterinary Medicine Hannover, Germany
| | - Andres Hilfiker
- Leibniz Research Laboratories for Biotechnology and Artificial Organs, Hannover Medical School, Hannover, Germany
| | - Willem F Wolkers
- Institute of Multiphase Processes, Leibniz Universität Hannover, Germany.
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49
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Biochemical detection of fatal hypothermia and hyperthermia in affected rat hypothalamus tissues by Fourier transform infrared spectroscopy. Biosci Rep 2019; 39:BSR20181633. [PMID: 30824563 PMCID: PMC6418404 DOI: 10.1042/bsr20181633] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 02/16/2019] [Accepted: 02/27/2019] [Indexed: 12/27/2022] Open
Abstract
It is difficult to determinate the cause of death from exposure to fatal hypothermia and hyperthermia in forensic casework. Here, we present a state-of-the-art study that employs Fourier-transform infrared (FTIR) spectroscopy to investigate the hypothalamus tissues of fatal hypothermic, fatal hyperthermic and normothermic rats to determine forensically significant biomarkers related to fatal hypothermia and hyperthermia. Our results revealed that the spectral variations in the lipid, protein, carbohydrate and nucleic acid components are highly different for hypothalamuses after exposure to fatal hypothermic, fatal hyperthermic and normothermic conditions. In comparison with the normothermia group, the fatal hypothermia and hyperthermia groups contained higher total lipid amounts but were lower in unsaturated lipids. Additionally, their cell membranes were found to have less motional freedom. Among these three groups, the fatal hyperthermia group contained the lowest total proteins and carbohydrates and the highest aggregated and dysfunctional proteins, while the fatal hypothermia group contained the highest level of nucleic acids. In conclusion, this study demonstrates that FTIR spectroscopy has the potential to become a reliable method for the biochemical characterization of fatal hypothermia and hyperthermia hypothalamus tissues, and this could be used as a postmortem diagnostic feature in fatal hypothermia and hyperthermia deaths.
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50
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Babrnáková J, Pavliňáková V, Brtníková J, Sedláček P, Prosecká E, Rampichová M, Filová E, Hearnden V, Vojtová L. Synergistic effect of bovine platelet lysate and various polysaccharides on the biological properties of collagen-based scaffolds for tissue engineering: Scaffold preparation, chemo-physical characterization, in vitro and ex ovo evaluation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:236-246. [PMID: 30948058 DOI: 10.1016/j.msec.2019.02.092] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 02/07/2019] [Accepted: 02/23/2019] [Indexed: 01/08/2023]
Abstract
Crosslinked 3D porous collagen-polysaccharide scaffolds, prepared by freeze-drying, were modified with bovine platelet lysate (BPL) and evaluated in terms of chemical, physical and biological properties. Natural antibacterial polysaccharides like chitosan, chitin/chitosan-glucan complex and calcium salt of oxidized cellulose (CaOC) incorporated in collagen scaffolds affected not only chemo-physical properties of the composite scaffolds but also improved their biological properties, especially when BPL was presented. Lipophilic BPL formed microspheres in porous scaffolds while reduced by half their swelling ratio. The resistance of collagen sponges to hydrolytic degradation in water depended strongly on chemical crosslinking varying from 60 min to more than one year. According to in-vitro tests, chemically crosslinked scaffolds exhibited a good cellular response, cell-matrix interactions, and biocompatibility of the material. The combination of collagen with natural polysaccharides confirmed a significant positive synergistic effect on cultivation of cells as determined by MTS assay and PicoGreen method, as well as on angiogenesis evaluated by ex ovo Chick Chorioallantoic Membrane (CAM) assay. Contrary, modification only by BLP of pure collagen scaffolds exhibited decreased biocompatibility in comparison to unmodified pure collagen scaffold. We propose that the newly developed crosslinked collagen sponges involving bioactive additives could be used as scaffold for growing cells in systems with low mechanical loading in tissue engineering, especially in dermis replacement, where neovascularization is a crucial parameter for successful skin regeneration.
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Affiliation(s)
- Johana Babrnáková
- CEITEC - Central European Institute of Technology, Brno University of Technology, Advanced Biomaterials, Purkynova 656/123, 612 00 Brno, Czech Republic.
| | - Veronika Pavliňáková
- CEITEC - Central European Institute of Technology, Brno University of Technology, Advanced Biomaterials, Purkynova 656/123, 612 00 Brno, Czech Republic
| | - Jana Brtníková
- CEITEC - Central European Institute of Technology, Brno University of Technology, Advanced Biomaterials, Purkynova 656/123, 612 00 Brno, Czech Republic
| | - Petr Sedláček
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Eva Prosecká
- Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 14220 Prague, Czech Republic
| | - Michala Rampichová
- Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 14220 Prague, Czech Republic
| | - Eva Filová
- Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 14220 Prague, Czech Republic
| | - Vanessa Hearnden
- Department of Materials Science and Engineering, Kroto Research Institute, North Campus, University of Sheffield, Broad Lane, Sheffield S3 7HQ, United Kingdom
| | - Lucy Vojtová
- CEITEC - Central European Institute of Technology, Brno University of Technology, Advanced Biomaterials, Purkynova 656/123, 612 00 Brno, Czech Republic
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