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James JJ, Sandhya KV, Sridhar KN, Sudarson S, Basavaraj BV, Bharath S. Proteomic Characterization of Human Placenta: Insights into Potential Therapeutic Applications for Osteoarthritis. AAPS PharmSciTech 2024; 25:139. [PMID: 38890179 DOI: 10.1208/s12249-024-02851-5] [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: 02/25/2024] [Accepted: 05/28/2024] [Indexed: 06/20/2024] Open
Abstract
Biologics have become increasingly prominent as therapeutics in recent years due to their innate immune-privileged nature, biocompatibility, and high levels of protein biofactors. The aim of the study is to characterise the biologic, lyophilized human placenta (LHP) and explore its therapeutic potential for osteoarthritis (OA). The presence of six bioactive constituents that regulate cell-extracellular matrix interaction was identified by liquid chromatography coupled to electrospray ionization and quadrupole time-of-flight mass spectrometry (LC-ESI-QTOF/MS). Metalloproteinase inhibitor 3 (TIMP3), alpha-1 anti-trypsin (a1AT), basic fibroblast growth factor (bFGF), and transforming growth factor β1 (TGFβ1) were detected and quantified using ELISA. The total protein content present in LHP by Bradford assay was found to be 409.35 ± 0.005 μg/ml. The analytical techniques such as Attenuated Total Reflectance-Fourier Transform Infrared spectroscopy (ATR-FTIR), solid state carbon-13 Nuclear Magnetic Resonance (ssC13 NMR) spectroscopy, and Differential Scanning Calorimetry (DSC) revealed the secondary structure and conformational stability of LHP. X-Ray diffraction (XRD) studies showed its amorphous nature. Bioactivity assessment of LHP was performed in human keratinocytes (HaCaT) and human dermal fibroblasts (HDF) by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The LHP was highly proliferative against skin cells and non-toxic, based on the findings of the bioactivity assay. LHP has the potential to be used as a therapeutic agent for OA, as its characterisation unveiled its physical stability, significant concentration of bioactive components that are pertinent to cartilage repair and its conformational stability.
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Affiliation(s)
- Jithu Jerin James
- Department of Pharmaceutics, Faculty of Pharmacy, MS Ramaiah University of Applied Sciences, University House, Gnanagangothri Campus, New BEL Road, MSR Nagar, Bengaluru, 560054, India
| | - K V Sandhya
- Department of Pharmaceutics, Faculty of Pharmacy, MS Ramaiah University of Applied Sciences, University House, Gnanagangothri Campus, New BEL Road, MSR Nagar, Bengaluru, 560054, India.
| | - K N Sridhar
- Cancyte Technologies Pvt Ltd, Sri Shankara Research Centre, Rangadore Memorial Hospital, Shankarapuram, Bengaluru, India
| | - S Sudarson
- Cancyte Technologies Pvt Ltd, Sri Shankara Research Centre, Rangadore Memorial Hospital, Shankarapuram, Bengaluru, India
| | - B V Basavaraj
- Department of Pharmaceutics, Faculty of Pharmacy, MS Ramaiah University of Applied Sciences, University House, Gnanagangothri Campus, New BEL Road, MSR Nagar, Bengaluru, 560054, India
| | - S Bharath
- Department of Pharmaceutics, Faculty of Pharmacy, MS Ramaiah University of Applied Sciences, University House, Gnanagangothri Campus, New BEL Road, MSR Nagar, Bengaluru, 560054, India
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2
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Sarna-Boś K, Boguta P, Szymańska-Chargot M, Skic K, Zdunek A, Stachurski P, Vodanovic M, Chałas R. Insight into structural and chemical profile / composition of powdered enamel and dentine in different types of permanent human teeth. Micron 2024; 179:103608. [PMID: 38354449 DOI: 10.1016/j.micron.2024.103608] [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: 11/12/2023] [Revised: 02/03/2024] [Accepted: 02/05/2024] [Indexed: 02/16/2024]
Abstract
Research on the structure and chemical composition of dental tissues allows for the optimisation of materials used in the treatment and care of teeth. Understanding pathological processes occurring in dental tissues and their reactions to various substances, including dental materials, are crucial for the development of new dental technologies. The aim of the study was to check the similarities in the chemical and morphological structure of enamel and dentine powders in various groups of permanent teeth, as well as differential chemical analysis for both grinded tissues tested. The extracted non-carious and non-pathological human permanent teeth were divided into four groups: incisors, canines, premolars and molars. Each tooth was sectioned to thick slices. Enamel and dentine were mechanically separated and ground in an agate mortar and pestle. FT-Raman and FTIR spectroscopy methods were used for the analysis of biological tissues. SEM method was applied to visualise hard dental tissues structures present on the surface and within the particles. The morphological structures were the same within the analysed tissues and did not depend on the analysed group of teeth. A comparison of the mineral-to-organic ratios of enamel and dentine in each tooth group showed that the bands related to PO43- were clearly higher in content for enamel than for dentine. Higher absorbance measured at the region of 2800-3700 cm-1 and at 1500-1800 cm-1 for dentine as compared to enamel samples were indicative of a higher content of organic structures. The highest contribution of phosphates was in canine enamel samples.The studies showed that the carbonate-to-phosphate ratio was higher for dentine (0.20 - 0.48) compared to the values obtained for enamel (0.13 - 0.22), however, minor differences were found in each group of enamel or dentine samples. The lack of significant differences between the enamel and dentine powders of incisors, canines, premolars and molars may prove that each extracted tooth, regardless of the tooth group, is an excellent substrate for their substitution.
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Affiliation(s)
- Katarzyna Sarna-Boś
- Department of Dental Prosthetics, Medical University of Lublin, Chodźki 6, Lublin 20-093, Poland.
| | - Patrycja Boguta
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, Lublin 20-290, Poland
| | | | - Kamil Skic
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, Lublin 20-290, Poland
| | - Artur Zdunek
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, Lublin 20-290, Poland
| | - Piotr Stachurski
- Department of Paediatric Dentistry, Medical University of Lublin, Chodźki 6, Lublin 20-093, Poland
| | - Marin Vodanovic
- Department of Dental Anthropology, University of Zagreb School of Dental Medicine, University Hospital Centre Zagreb, Gundulićeva 5, Zagreb HR-10000, Croatia; Department of Oral Medicine, Medical University of Lublin, Chodźki 6, Lublin 20-093, Poland
| | - Renata Chałas
- Department of Oral Medicine, Medical University of Lublin, Chodźki 6, Lublin 20-093, Poland
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Hanan E, Hasan N, Zahiruddin S, Ahmad S, Sharma V, Ahmad FJ. Utilization of Quince (Cydonia oblonga) Peel and Exploration of Its Metabolite Profiling and Cardioprotective Potential Against Doxorubicin-Induced Cardiotoxicity in Wistar Rats. ACS OMEGA 2023; 8:40036-40050. [PMID: 37929101 PMCID: PMC10620784 DOI: 10.1021/acsomega.3c00698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 08/24/2023] [Indexed: 11/07/2023]
Abstract
Quince (Cydonia oblonga Mill.) is a pomaceous fruit that is typically processed into jams, jellies, and marmalade. The byproduct, i.e., the quince peel emanated from the processing industry, can be upcycled, ensuring zero waste policy and resulting in a sustainable food system. In our study, the quince peel was explored for in vitro phytochemical analysis and in vivo cardioprotective potential. Two diverse extractions (ultrasonication and reflux) and four different solvents (aqueous, ethanolic, hydroethanolic, and methanolic) were used for the extraction of quince peel and assessed for the phytochemical and antioxidant study. Among all the evaluated extracts, hydroethanolic quince extract extracted through the reflux extraction method showed the maximum phenolic (27.23 ± 0.85 mg GAE/g DW) and flavonoid (16.5 ± 1.02 mg RE/g DW) content. The maximum antioxidant potential (DPPH) with an IC50 value of 204.8 ± 2.24 μg/mL was noted for the hydroethanolic extract. This best active extract was then subjected to HPTLC, UPLC-MS, mineral, and FTIR analysis to study the metabolic profiling and inorganic composition and to confirm the presence of bioactives. Additionally, the in vivo study was done in rats using doxorubicin (DOX)-induced cardiotoxicity. The rats were given extracts orally at 160 and 320 mg/kg bw for 30 days. ECG analysis was done at the termination of the experiment. Besides this, the lipid profile, blood serum parameters (CK-MB, LDH, AST), and tissue parameters (MDA, SOD, GSH, CAT) were analyzed. The DOX-treated group unveiled a substantial variance (p < 0.001) in all the parameters in contrast to the normal control group and extract control groups. However, the pretreated groups substantially alleviated the DOX-induced changes in all the parameters. Additionally, recuperation in histopathological alterations of the cardiac tissue in contrast to the DOX-induced toxicity was also seen in the pretreated groups. Thus, it could be said that the cardioprotective activity of the quince peel extract attributed to the presence of phytoconstituents counteracted the DOX-induced cardiotoxicity and assisted in the restoration of the cardiac injury in rats.
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Affiliation(s)
- Entesar Hanan
- Department
of Food Technology, School of Interdisciplinary Science and Technology, Jamia Hamdard, New Delhi 110062, India
| | - Nazeer Hasan
- Department
of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Sultan Zahiruddin
- Department
of Pharmacognosy and Phytochemistry, School of Pharmaceutical Education
& Research, Jamia Hamdard, New Delhi 110062, India
| | - Sayeed Ahmad
- Department
of Pharmacognosy and Phytochemistry, School of Pharmaceutical Education
& Research, Jamia Hamdard, New Delhi 110062, India
| | - Vasudha Sharma
- Department
of Food Technology, School of Interdisciplinary Science and Technology, Jamia Hamdard, New Delhi 110062, India
| | - Farhan J Ahmad
- Department
of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
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4
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Seredin P, Goloshchapov D, Kashkarov V, Lukin A, Peshkov Y, Ippolitov I, Ippolitov Y, Litvinova T, Vongsvivut J, Chae B, Freitas RO. Changes in Dental Biofilm Proteins' Secondary Structure in Groups of People with Different Cariogenic Situations in the Oral Cavity and Using Medications by Means of Synchrotron FTIR-Microspectroscopy. Int J Mol Sci 2023; 24:15324. [PMID: 37895003 PMCID: PMC10607285 DOI: 10.3390/ijms242015324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/13/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
This work unveils the idea that the cariogenic status of the oral cavity (the presence of active caries lesions) can be predicted via a lineshape analysis of the infrared spectral signatures of the secondary structure of proteins in dental biofilms. These spectral signatures that work as natural markers also show strong sensitivity to the application in patients of a so-called modulator-a medicinal agent (a pelleted mineral complex with calcium glycerophosphate). For the first time, according to our knowledge, in terms of deconvolution of the complete spectral profile of the amide I and amide II bands, significant intra- and intergroup differences were determined in the secondary structure of proteins in the dental biofilm of patients with a healthy oral cavity and with a carious pathology. This allowed to conduct a mathematical assessment of the spectral shifts in proteins' secondary structure in connection with the cariogenic situation in the oral cavity and with an external modulation. It was shown that only for the component parallel β-strands in the amide profile of the biofilm, a statistically significant (p < 0.05) change in its percentage weight (composition) was registered in a cariogenic situation (presence of active caries lesions). Note that no significant differences were detected in a normal situation (control) and in the presence of a carious pathology before and after the application of the modulator. The change in the frequency and percentage weight of parallel β-strands in the spectra of dental biofilms proved to be the result of the presence of cariogenic mutans streptococci in the film as well as of the products of their metabolism-glucan polymers. We foresee that the results presented here can inherently provide the basis for the infrared spectral diagnosis of changes (shifts) in the oral microbiome driven by the development of the carious process in the oral cavity as well as for the choice of optimal therapeutic treatments of caries based on microbiome-directed prevention measures.
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Affiliation(s)
- Pavel Seredin
- Department of Solid-State Physics and Nanostructures, Voronezh State University, 394018 Voronezh, Russia
| | - Dmitry Goloshchapov
- Department of Solid-State Physics and Nanostructures, Voronezh State University, 394018 Voronezh, Russia
| | - Vladimir Kashkarov
- Department of Solid-State Physics and Nanostructures, Voronezh State University, 394018 Voronezh, Russia
| | - Anatoly Lukin
- Department of Solid-State Physics and Nanostructures, Voronezh State University, 394018 Voronezh, Russia
| | - Yaroslav Peshkov
- Department of Solid-State Physics and Nanostructures, Voronezh State University, 394018 Voronezh, Russia
| | - Ivan Ippolitov
- Department of Pediatric Dentistry with Orthodontia, Voronezh State Medical University, 394006 Voronezh, Russia
| | - Yuri Ippolitov
- Department of Pediatric Dentistry with Orthodontia, Voronezh State Medical University, 394006 Voronezh, Russia
| | - Tatiana Litvinova
- Computational Semasiology Laboratory, Voronezh State Pedagogical University, 394043 Voronezh, Russia
| | - Jitraporn Vongsvivut
- Australian Synchrotron (Synchrotron Light Source Australia Pty LTD), Clayton, VIC 3168, Australia;
| | - Boknam Chae
- Pohang Accelerator Laboratory, Beamline Research Division, Pohang 37673, Republic of Korea
| | - Raul O. Freitas
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas 13083-970, Brazil
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5
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Zhou Z, Fan Y, Jiang Y, Shi S, Xue C, Zhao X, Tan S, Chen X, Feng C, Zhu Y, Yan J, Zhou Z, Zhao Y, Liu J, Chen F, He S. Mineralized Enzyme-Based Biomaterials with Superior Bioactivities for Bone Regeneration. ACS APPLIED MATERIALS & INTERFACES 2022; 14:36315-36330. [PMID: 35929013 DOI: 10.1021/acsami.2c05794] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The formation and metabolic balance of bone tissue is a controllable process of biomineralization, which is regulated by various cells, biomolecules, and ions. Enzyme molecules play an important role in this process, and alkaline phosphatase (ALP) is one of the most critical factors. In this study, inspired by the process of bone biomineralization, a biomimetic strategy is achieved for the preparation of mineralized ALP nanoparticles (MALPNs), by taking advantages of the unique reaction between ALP and calcium ions in Dulbecco's modified Eagle's medium. Benefiting from the mild biomineralization reaction, the MALPN system highly maintains the activity of ALP. Furthermore, the in vitro studies show that the MALPN system significantly enhances the proliferation of bone marrow mesenchymal stem cells and upregulates their osteogenic differentiation. When evaluated as synthetic graft materials for bone regeneration, the MALPN-incorporated gelatin methacryloyl graft shows excellent mechanical properties, a sustained release profile of ALP, and high biocompatibility and efficacy in guiding bone regeneration and vascularization for critical-sized rat calvarial defect. Moreover, we also demonstrate that the biomimetic mineralization strategy can be adopted for other proteins such as acid phosphatase, bovine serum albumin, fibrinogen, and gelatin, suggesting its universality for constructing mineralized protein-/enzyme-based bioactive materials for the application of tissue regeneration.
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Affiliation(s)
- Zhi Zhou
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Yunshan Fan
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Yingying Jiang
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, P. R. China
| | - Sheng Shi
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Chao Xue
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Xinyu Zhao
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Shuo Tan
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Xin Chen
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Chaobo Feng
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Yancheng Zhu
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Jiajun Yan
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Zifei Zhou
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Yunfei Zhao
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Junjian Liu
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Feng Chen
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
| | - Shisheng He
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P. R. China
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6
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The power of weak ion-exchange resins assisted by amelogenin for natural remineralization of dental enamel: an in vitro study. Odontology 2022; 110:545-556. [PMID: 35147809 PMCID: PMC9170625 DOI: 10.1007/s10266-022-00688-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 01/20/2022] [Indexed: 10/28/2022]
Abstract
This study aims to develop an innovative dental product to remineralize dental enamel by a proper combination of ion-exchange resins as controlled release of mineral ions that form dental enamel, in the presence of amelogenin to guide the appropriate crystal growth. The novel product proposed consists of a combination of ion-exchange resins (weak acid and weak base) individually loaded with the remineralizing ions: Ca2+, PO43- and F-, also including Zn2+ in a minor amount as antibacterial, together with the protein amelogenin. Such cocktail provides onsite controlled release of the ions necessary for enamel remineralization due to the weak character of the resins and at the same time, a guiding tool for related crystal growth by the indicated protein. Amelogenin protein is involved in the structural development of natural enamel and takes a key role in controlling the crystal growth morphology and alignment at the enamel surface. Bovine teeth were treated by applying the resins and protein together with artificial saliva. Treated teeth were evaluated with nanoindentation, scanning electron microscopy and energy-dispersive X-ray spectroscopy. The innovative material induces the dental remineralization creating a fluorapatite layer with a hardness equivalent to sound enamel, with the appropriate alignment of corresponding nanocrystals, being the fluorapatite more acid resistant than the original mineral. Our results suggest that the new product shows potential for promoting long-term remineralization leading to the inhibition of caries and protection of dental structures.
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7
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Seredin P, Goloshchapov D, Ippolitov Y, Vongsvivut J. Engineering of a Biomimetic Interface between a Native Dental Tissue and Restorative Composite and Its Study Using Synchrotron FTIR Microscopic Mapping. Int J Mol Sci 2021; 22:6510. [PMID: 34204524 PMCID: PMC8233930 DOI: 10.3390/ijms22126510] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/13/2021] [Accepted: 06/14/2021] [Indexed: 01/04/2023] Open
Abstract
The aim of this work is to develop a biomimetic interface between the natural tooth tissue and the restorative composite and to study it on the basis of synchrotron micro-FTIR mapping and multidimensional processing of the spectral data array. Using hierarchical cluster analysis of 3D FTIR data revealed marked improvements in the formation of the dentine/adhesive/dental hybrid interface using a biomimetic approach. The use of a biomimetic strategy (application of an amino acid-modified primer, alkaline calcium and a nano-c-HAp-modified adhesive) allowed the formation of a matrix that can be structurally integrated with natural dentine and dental composite. The biomimetic hybrid layer was characterised by homogeneous chemical composition and a higher degree of conversion of the adhesive during polymerisation, which should provide optimal integration of the dental composite with the dentine.
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Affiliation(s)
- Pavel Seredin
- Solid State Physics and Nanostructures Department, Voronezh State University, University sq.1, 394018 Voronezh, Russia;
- Scientific and Educational Center “Nanomaterials and Nanotechnologies”, Ural Federal University named after the first President of Russia B. N. Yeltsin, Mir av., 620002 Yekaterinburg, Russia
| | - Dmitry Goloshchapov
- Solid State Physics and Nanostructures Department, Voronezh State University, University sq.1, 394018 Voronezh, Russia;
| | - Yuri Ippolitov
- Department of Pediatric Dentistry with Orthodontia, Voronezh State Medical University, Studentcheskaya st. 11, 394006 Voronezh, Russia;
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8
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Sharma V, Srinivasan A, Nikolajeff F, Kumar S. Biomineralization process in hard tissues: The interaction complexity within protein and inorganic counterparts. Acta Biomater 2021; 120:20-37. [PMID: 32413577 DOI: 10.1016/j.actbio.2020.04.049] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/17/2020] [Accepted: 04/26/2020] [Indexed: 02/07/2023]
Abstract
Biomineralization can be considered as nature's strategy to produce and sustain biominerals, primarily via creation of hard tissues for protection and support. This review examines the biomineralization process within the hard tissues of the human body with special emphasis on the mechanisms and principles of bone and teeth mineralization. We describe the detailed role of proteins and inorganic ions in mediating the mineralization process. Furthermore, we highlight the various available models for studying bone physiology and mineralization starting from the historical static cell line-based methods to the most advanced 3D culture systems, elucidating the pros and cons of each one of these methods. With respect to the mineralization process in teeth, enamel and dentin mineralization is discussed in detail. The key role of intrinsically disordered proteins in modulating the process of mineralization in enamel and dentine is given attention. Finally, nanotechnological interventions in the area of bone and teeth mineralization, diseases and tissue regeneration is also discussed. STATEMENT OF SIGNIFICANCE: This article provides an overview of the biomineralization process within hard tissues of the human body, which encompasses the detailed mechanism innvolved in the formation of structures like teeth and bone. Moreover, we have discussed various available models used for studying biomineralization and also explored the nanotechnological applications in the field of bone regeneration and dentistry.
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Affiliation(s)
- Vaibhav Sharma
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi, India.
| | | | | | - Saroj Kumar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi, India.
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9
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Sharma V, Rastogi S, Kumar Bhati K, Srinivasan A, Roychoudhury A, Nikolajeff F, Kumar S. Mapping the Inorganic and Proteomic Differences among Different Types of Human Teeth: A Preliminary Compositional Insight. Biomolecules 2020; 10:E1540. [PMID: 33187273 PMCID: PMC7697572 DOI: 10.3390/biom10111540] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/29/2020] [Accepted: 11/09/2020] [Indexed: 02/06/2023] Open
Abstract
In recent years, studies on mineralized tissues are becoming increasingly popular not only due to the diverse mechanophysical properties of such materials but also because of the growing need to understand the intricate mechanism involved in their assembly and formation. The biochemical mechanism that results in the formation of such hierarchical structures through a well-coordinated accumulation of inorganic and organic components is termed biomineralization. Some prime examples of such tissues in the human body are teeth and bones. Our current study is an attempt to dissect the compositional details of the inorganic and organic components in four major types of human teeth using mass spectrometry-based approaches. We quantified inorganic materials using inductively coupled plasma resonance mass spectrometry (ICP-MS). Differential level of ten different elements, Iron (Fe), Cadmium (Cd), Potassium (K), Sulphur (S), Cobalt (Co), Magnesium (Mg), Manganese (Mn), Zinc (Zn), Aluminum (Al), and Copper (Cu) were quantified across different teeth types. The qualitative and quantitative details of their respective proteomic milieu revealed compositional differences. We found 152 proteins in total tooth protein extract. Differential abundance of proteins in different teeth types were also noted. Further, we were able to find out some significant protein-protein interaction (PPI) backbone through the STRING database. Since this is the first study analyzing the differential details of inorganic and organic counterparts within teeth, this report will pave new directions to the compositional understanding and development of novel in-vitro repair strategies for such biological materials.
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Affiliation(s)
- Vaibhav Sharma
- Departement of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India;
| | - Simran Rastogi
- Departement of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India;
| | - Kaushal Kumar Bhati
- Louvain Institute of Biomolecular Science, Université Catholique de Louvain, 1348 Ottignies-Louvain-la-Neuve, Belgium;
| | - Alagiri Srinivasan
- Department of Biochemistry, Jamia Hamdard University, New Delhi 110062, India;
| | - Ajoy Roychoudhury
- Centre for Dental Education and Research (CDER), All India Institute of Medical Sciences, New Delhi 110029, India;
| | - Fredrik Nikolajeff
- Department of Health Sciences, Lulea University of Technology, 97187 Lulea, Sweden;
| | - Saroj Kumar
- Departement of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India;
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10
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Characterization of active/binding site residues of peptidyl-tRNA hydrolase using biophysical and computational studies. Int J Biol Macromol 2020; 159:877-885. [PMID: 32445815 DOI: 10.1016/j.ijbiomac.2020.05.133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 04/09/2020] [Accepted: 05/17/2020] [Indexed: 11/21/2022]
Abstract
All mRNAs cannot be translated into full-length proteins due to ribosome-stalling that leads to release of peptidyl-tRNA which can be lethal for bacterial survival. The enzyme peptidyl-tRNA hydrolase (PtH) hydrolyses the ester bond between nascent peptide and tRNA of peptidyl-tRNA and rescues the cells from toxicity. PtH is an essential enzyme in bacteria and inhibiting this crucial enzyme can serve to combat bacterial diseases. But due to lack of understanding about the catalytic mechanism of PtH, its inhibitors have not been developed. In this work, we have carried out the binding studies of M. tuberculosis and E. coli PtH with the peptidyl-tRNA analogue (puromycin) using ITC, FTIR, CD experiments followed by docking and MD simulations to identify the potential active site residues that would help to design PtH inhibitors. Binding studies of puromycin with both PtH by ITC experiments demonstrate similar thermodynamic parameters and three fold difference in their KD. CD and FTIR studies detected changes in secondary structure composition of PtH in the presence of puromycin with different degree of perturbation. Though interactions with puromycin are conserved in both proteins, modelling studies revealed that water mediated interactions in M. tb-PtH resulting in higher affinity to puromycin.
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Peled Y, Drake JL, Malik A, Almuly R, Lalzar M, Morgenstern D, Mass T. Optimization of skeletal protein preparation for LC-MS/MS sequencing yields additional coral skeletal proteins in Stylophora pistillata. ACTA ACUST UNITED AC 2020; 2:8. [PMID: 32724895 PMCID: PMC7115838 DOI: 10.1186/s42833-020-00014-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Stony corals generate their calcium carbonate exoskeleton in a highly controlled biomineralization process mediated by a variety of macromolecules including proteins. Fully identifying and classifying these proteins is crucial to understanding their role in exoskeleton formation, yet no optimal method to purify and characterize the full suite of extracted coral skeletal proteins has been established and hence their complete composition remains obscure. Here, we tested four skeletal protein purification protocols using acetone precipitation and ultrafiltration dialysis filters to present a comprehensive scleractinian coral skeletal proteome. We identified a total of 60 proteins in the coral skeleton, 44 of which were not present in previously published stony coral skeletal proteomes. Extracted protein purification protocols carried out in this study revealed that no one method captures all proteins and each protocol revealed a unique set of method-exclusive proteins. To better understand the general mechanism of skeletal protein transportation, we further examined the proteins’ gene ontology, transmembrane domains, and signal peptides. We found that transmembrane domain proteins and signal peptide secretion pathways, by themselves, could not explain the transportation of proteins to the skeleton. We therefore propose that some proteins are transported to the skeleton via non-traditional secretion pathways.
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Affiliation(s)
- Yanai Peled
- Marine Biology Department, University of Haifa, Haifa, Israel
| | - Jeana L Drake
- Marine Biology Department, University of Haifa, Haifa, Israel
| | - Assaf Malik
- Marine Biology Department, University of Haifa, Haifa, Israel
| | - Ricardo Almuly
- Marine Biology Department, University of Haifa, Haifa, Israel
| | - Maya Lalzar
- Bioinformatics Core Unit, University of Haifa, Haifa, Israel
| | - David Morgenstern
- De Botton Protein Profiling Institute of the Nancy and Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, Rehovot, Israel
| | - Tali Mass
- Marine Biology Department, University of Haifa, Haifa, Israel
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Li DW, Xie M, Brüschweiler R. Quantitative Cooperative Binding Model for Intrinsically Disordered Proteins Interacting with Nanomaterials. J Am Chem Soc 2020; 142:10730-10738. [DOI: 10.1021/jacs.0c01885] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Da-Wei Li
- Campus Chemical Instrument Center, The Ohio State University, Columbus, Ohio 43210, United States
| | - Mouzhe Xie
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Rafael Brüschweiler
- Campus Chemical Instrument Center, The Ohio State University, Columbus, Ohio 43210, United States
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
- Department of Biological Chemistry and Pharmacology, The Ohio State University, Columbus, Ohio 43210, United States
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Novel Insights into Regulation of Human Teeth Biomineralization: Deciphering the Role of Post-Translational Modifications in a Tooth Protein Extract. Int J Mol Sci 2019; 20:ijms20164035. [PMID: 31430851 PMCID: PMC6720696 DOI: 10.3390/ijms20164035] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/16/2019] [Accepted: 08/17/2019] [Indexed: 12/11/2022] Open
Abstract
The importance of whole protein extracts from different types of human teeth in modulating the process of teeth biomineralization is reported. There are two crucial features in protein molecules that result in efficient teeth biomineralization. Firstly, the unique secondary structure characteristics within these proteins i.e. the exclusive presence of a large amount of intrinsic disorder and secondly, the presence of post-translational modifications (PTM) like phosphorylation and glycosylation within these protein molecules. The present study accesses the structural implications of PTMs in the tooth proteins through scanning electron microscopy and transmission electron microscopy. The deglycosylated/dephosphorylated protein extracts failed to form higher-order mineralization assemblies. Furthermore, through nanoparticle tracking analysis (NTA) we have shown that dephosphorylation and deglycosylation significantly impact the biomineralization abilities of the protein extract and resulted in smaller sized clusters. Hence, we propose these post-translational modifications are indispensable for the process of teeth biomineralization. In addition to basic science, this study would be worth consideration while designing of biomimetics architecture for an efficient peptide-based teeth remineralization strategy.
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