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Rigi M, Son HS, Moon L, Matthaei M, Srikumaran D, Jun AS, Eberhart CG, Soiberman US. Collagen type XII is undetectable in keratoconus Bowman's layer. Br J Ophthalmol 2024; 108:343-348. [PMID: 36746614 PMCID: PMC10466210 DOI: 10.1136/bjo-2022-322180] [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: 07/06/2022] [Accepted: 01/21/2023] [Indexed: 02/08/2023]
Abstract
PURPOSE Corneal biomechanical failure is the hallmark of keratoconus (KC); however, the cause of this failure remains elusive. Collagen type XII (COL12A1), which localises to Bowman's layer (BL), is thought to function in stress-bearing areas, such as BL. Given the putative protective role of COL12A1 in biomechanical stability, this study aims to characterise COL12A1 expression in all corneal layers involved in KC. METHODS TaqMan quantitative PCR was performed on 31 corneal epithelium samples of progressive KC and myopic control eyes. Tissue microarrays were constructed using full-thickness corneas from 61 KC cases during keratoplasty and 18 non-KC autopsy eyes and stained with an antibody specific to COL12A1. Additionally, COL12A1 was knocked out in vitro in immortalised HEK293 cells. RESULTS COL12A1 expression was reduced at transcript levels in KC epithelium compared with controls (ratio: 0.58, p<0.03). Immunohistochemical studies demonstrated that COL12A1 protein expression in BL was undetectable, with reduced expression in KC epithelium, basement membrane and stroma. CONCLUSIONS The apparent absence of COL12A1 in KC BL, together with the functional importance that COL12A1 is thought to have in stress bearing areas, suggests that COL12A1 may play a role in the pathogenesis of KC. Further studies are necessary to investigate the mechanisms that lead to COL12A1 dysregulation in KC.
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Affiliation(s)
- Mohammed Rigi
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Hyeck-Soo Son
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
- Department of Ophthalmology, University Hospital Heidelberg, Heidelberg, Germany
| | - Loren Moon
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Mario Matthaei
- Department of Ophthalmology, University Hospital Cologne, Cologne, Germany
| | - Divya Srikumaran
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Albert S Jun
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Charles G Eberhart
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Uri S Soiberman
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
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Chou TM, Agarwal A, Agarwal R. An Immunohistochemical and Histological Study of the Animal Periodontal Ligament During Orthodontic Force Application with Concomitant Application of Electric Current - An Animal Study. Indian J Dent Res 2024; 35:70-75. [PMID: 38934753 DOI: 10.4103/ijdr.ijdr_905_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 11/22/2023] [Indexed: 06/28/2024] Open
Abstract
INTRODUCTION The application of direct current can have a significant impact on the rate of tooth movement and surrounding periodontal ligament collagen turnover. This study aims to provide insight into the optimal characteristics of applied current to achieve enhanced tissue response. METHOD Eighteen male Wistar rats were divided into three groups (I, II, and III). Split mouth design was used, and each side was allocated into an experimental group or control group. Experimental sides of groups I, II, and III received 20, 10, and 15 μA of current (15 min, twice daily for 3 days). Both the experimental and control groups receive an orthodontic force via the NiTi closed coil spring. The amount of tooth movement was determined daily. Immunohistochemistry slides were scored using the immunoreactive scoring (IRS) system for collagen types I and III. One-way Analysis of Variance (ANOVA) and Tukey post hoc test were used to analyse the rate of tooth movement, while Mann-Whitney test was used to analyse IRS distribution between control and experimental groups. RESULTS Compared with the control group, there was a statistically significant difference in tooth movement in all the experimental groups, with group 3 showing the maximum rate on days 2 and 3. This was supported by immunoreactive scores for both collagen types I and III. CONCLUSIONS After 72 hours, the expression of collagen types 1 and 3 increased significantly for group III. This finding was in harmony with the rate of tooth movement, which was maximum for group 3 (15 μA) as compared to other groups.
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Affiliation(s)
- Teh Min Chou
- Department of Orthodontics, Faculty of Dental Sciences, Institute of Medical Sciences, Trauma Centre, Banaras Hindu University, Varanasi, UP, India
| | - Ashish Agarwal
- Department of Orthodontics, Faculty of Dental Sciences, Institute of Medical Sciences, Trauma Centre, Banaras Hindu University, Varanasi, UP, India
| | - Rahul Agarwal
- Department of Oral and Maxillofacial Pathology, Faculty of Dental Sciences, Institute of Medical Sciences, BHU, Varanasi, UP, India
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Osorio-Aguilar Y, Gonzalez-Vazquez MC, Lozano-Zarain P, Martinez-Laguna Y, Baylon-Pacheco L, Rosales-Encina JL, Carabarin-Lima A, Rocha-Gracia RDC. The Enolase of the Haemophilus influenzae Mediates Binding to Collagens: An Extracellular Matrix Component. Int J Mol Sci 2023; 24:15499. [PMID: 37958487 PMCID: PMC10650631 DOI: 10.3390/ijms242115499] [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: 08/08/2023] [Revised: 10/05/2023] [Accepted: 10/16/2023] [Indexed: 11/15/2023] Open
Abstract
Enolase proteins play a significant role as moonlighting proteins. In their role as surface-associated enolase, they have multiple functions as they interact with extracellular matrix proteins. Type I and III collagens are the major constituents of this extracellular matrix, and collagen is one of the targets of interaction with the enolase of many pathogens, thereby helping the colonization process and promoting the subsequent invasion of the host. This work aimed to determine the participation of non-typeable H. influenzae enolase as a collagen-binding protein. In this study, through the use of in vitro tests it was demonstrated that recombinant enolase of non-typeable H. influenzae (rNTHiENO) strongly binds to type I collagen. Using molecular docking, the residues that could take part in the interaction of non-typeable H. influenzae enolase-type I collagen (NTHiENO-Cln I) and non-typeable H. influenzae enolase-type III collagen (NTHiENO-Cln III) were identified. However, in vitro assays show that NTHiENO has a better affinity to interact with Cln I, concerning type Cln III. The interaction of NTHiENO with collagen could play a significant role in the colonization process; this would allow H. influenzae to increase its virulence factors and strengthen its pathogenesis.
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Affiliation(s)
- Yesenia Osorio-Aguilar
- Posgrado en Microbiología, Laboratorio de Microbiología Hospitalaria y de la Comunidad, Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (Y.O.-A.); (P.L.-Z.); (Y.M.-L.)
| | - Maria Cristina Gonzalez-Vazquez
- Licenciatura en Biotecnología, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (M.C.G.-V.); (A.C.-L.)
| | - Patricia Lozano-Zarain
- Posgrado en Microbiología, Laboratorio de Microbiología Hospitalaria y de la Comunidad, Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (Y.O.-A.); (P.L.-Z.); (Y.M.-L.)
| | - Ygnacio Martinez-Laguna
- Posgrado en Microbiología, Laboratorio de Microbiología Hospitalaria y de la Comunidad, Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (Y.O.-A.); (P.L.-Z.); (Y.M.-L.)
| | - Lidia Baylon-Pacheco
- Departamento de Infectómica y Patogenesis Molecular, CINVESTAV-IPN, Avenida Instituto Politécnico Nacional No. 2508, Colonia San Pedro Zacatenco, Delegación Gustavo A. Madero, Mexico City 07360, Mexico; (L.B.-P.); (J.L.R.-E.)
| | - Jose Luis Rosales-Encina
- Departamento de Infectómica y Patogenesis Molecular, CINVESTAV-IPN, Avenida Instituto Politécnico Nacional No. 2508, Colonia San Pedro Zacatenco, Delegación Gustavo A. Madero, Mexico City 07360, Mexico; (L.B.-P.); (J.L.R.-E.)
| | - Alejandro Carabarin-Lima
- Licenciatura en Biotecnología, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (M.C.G.-V.); (A.C.-L.)
| | - Rosa del Carmen Rocha-Gracia
- Posgrado en Microbiología, Laboratorio de Microbiología Hospitalaria y de la Comunidad, Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (Y.O.-A.); (P.L.-Z.); (Y.M.-L.)
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Torres-Mansilla A, Hincke M, Voltes A, López-Ruiz E, Baldión PA, Marchal JA, Álvarez-Lloret P, Gómez-Morales J. Eggshell Membrane as a Biomaterial for Bone Regeneration. Polymers (Basel) 2023; 15:polym15061342. [PMID: 36987123 PMCID: PMC10057008 DOI: 10.3390/polym15061342] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/12/2023] Open
Abstract
The physicochemical features of the avian eggshell membrane play an essential role in the process of calcium carbonate deposition during shell mineralization, giving rise to a porous mineralized tissue with remarkable mechanical properties and biological functions. The membrane could be useful by itself or as a bi-dimensional scaffold to build future bone-regenerative materials. This review focuses on the biological, physical, and mechanical properties of the eggshell membrane that could be useful for that purpose. Due to its low cost and wide availability as a waste byproduct of the egg processing industry, repurposing the eggshell membrane for bone bio-material manufacturing fulfills the principles of a circular economy. In addition, eggshell membrane particles have has the potential to be used as bio-ink for 3D printing of tailored implantable scaffolds. Herein, a literature review was conducted to ascertain the degree to which the properties of the eggshell membrane satisfy the requirements for the development of bone scaffolds. In principle, it is biocompatible and non-cytotoxic, and induces proliferation and differentiation of different cell types. Moreover, when implanted in animal models, it elicits a mild inflammatory response and displays characteristics of stability and biodegradability. Furthermore, the eggshell membrane possesses a mechanical viscoelastic behavior comparable to other collagen-based systems. Overall, the biological, physical, and mechanical features of the eggshell membrane, which can be further tuned and improved, make this natural polymer suitable as a basic component for developing new bone graft materials.
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Affiliation(s)
| | - Maxwell Hincke
- Department of Innovation in Medical Education, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H8M5, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON K1H8M5, Canada
| | - Ana Voltes
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, 180171 Granada, Spain
- Instituto de Investigación Biosanitaria ibs. Granada, University Hospitals of Granada–University of Granada, 18071 Granada, Spain
- BioFab i3D Lab–Biofabrication and 3D (bio)Printing Singular Laboratory, Centre for Biomedical Research (CIBM), University of Granada, 180171 Granada, Spain
| | - Elena López-Ruiz
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, 180171 Granada, Spain
- Instituto de Investigación Biosanitaria ibs. Granada, University Hospitals of Granada–University of Granada, 18071 Granada, Spain
- BioFab i3D Lab–Biofabrication and 3D (bio)Printing Singular Laboratory, Centre for Biomedical Research (CIBM), University of Granada, 180171 Granada, Spain
- Department of Health Sciences, Campus de las Lagunillas S/N, University of Jaén, 23071 Jaén, Spain
| | - Paula Alejandra Baldión
- Departamento de Salud Oral, Facultad de Odontología, Universidad Nacional de Colombia, Bogotá 111321, Colombia
| | - Juan Antonio Marchal
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, 180171 Granada, Spain
- Instituto de Investigación Biosanitaria ibs. Granada, University Hospitals of Granada–University of Granada, 18071 Granada, Spain
- BioFab i3D Lab–Biofabrication and 3D (bio)Printing Singular Laboratory, Centre for Biomedical Research (CIBM), University of Granada, 180171 Granada, Spain
| | - Pedro Álvarez-Lloret
- Departamento de Geología, Universidad de Oviedo, 33005 Asturias, Spain
- Correspondence: (P.Á.-L.); (J.G.-M.)
| | - Jaime Gómez-Morales
- Laboratorio de Estudios Cristalográficos IACT–CSIC–UGR, Avda. Las Palmeras, No. 4, Armilla, 18100 Granada, Spain
- Correspondence: (P.Á.-L.); (J.G.-M.)
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siRNA-Mediated MELK Knockdown Induces Accelerated Wound Healing with Increased Collagen Deposition. Int J Mol Sci 2023; 24:ijms24021326. [PMID: 36674843 PMCID: PMC9861445 DOI: 10.3390/ijms24021326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 12/22/2022] [Accepted: 01/06/2023] [Indexed: 01/12/2023] Open
Abstract
Skin wounds remain a significant problem for the healthcare system, affecting the clinical outcome, patients' quality of life, and financial costs. Reduced wound healing times would improve clinical, economic, and social aspects for both patients and the healthcare system. Skin wound healing has been studied for years, but effective therapy that leads to accelerated wound healing remains to be discovered. This study aimed to evaluate the potential of MELK silencing to accelerate wound healing. A vectorless, transient knockdown of the MELK gene using siRNA was performed in a murine skin wound model. The wound size, total collagen, type 3 collagen, vessel size, vessel number, cell proliferation, cell apoptosis, number of mast cells, and immune infiltration by CD45, CD11b, CD45, and CD8a cells were evaluated. We observed that treatment with MELK siRNA leads to significantly faster wound closing associated with increased collagen deposition.
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Petrov I, Alexeyenko A. Individualized discovery of rare cancer drivers in global network context. eLife 2022; 11:74010. [PMID: 35593700 PMCID: PMC9159755 DOI: 10.7554/elife.74010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 05/20/2022] [Indexed: 11/13/2022] Open
Abstract
Late advances in genome sequencing expanded the space of known cancer driver genes several-fold. However, most of this surge was based on computational analysis of somatic mutation frequencies and/or their impact on the protein function. On the contrary, experimental research necessarily accounted for functional context of mutations interacting with other genes and conferring cancer phenotypes. Eventually, just such results become ‘hard currency’ of cancer biology. The new method, NEAdriver employs knowledge accumulated thus far in the form of global interaction network and functionally annotated pathways in order to recover known and predict novel driver genes. The driver discovery was individualized by accounting for mutations’ co-occurrence in each tumour genome – as an alternative to summarizing information over the whole cancer patient cohorts. For each somatic genome change, probabilistic estimates from two lanes of network analysis were combined into joint likelihoods of being a driver. Thus, ability to detect previously unnoticed candidate driver events emerged from combining individual genomic context with network perspective. The procedure was applied to 10 largest cancer cohorts followed by evaluating error rates against previous cancer gene sets. The discovered driver combinations were shown to be informative on cancer outcome. This revealed driver genes with individually sparse mutation patterns that would not be detectable by other computational methods and related to cancer biology domains poorly covered by previous analyses. In particular, recurrent mutations of collagen, laminin, and integrin genes were observed in the adenocarcinoma and glioblastoma cancers. Considering constellation patterns of candidate drivers in individual cancer genomes opens a novel avenue for personalized cancer medicine.
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Affiliation(s)
- Iurii Petrov
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden.,Science for Life Laboratory, Solna, Sweden
| | - Andrey Alexeyenko
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden.,Science for Life Laboratory, Solna, Sweden.,Evi-networks, enskild konsultföretag, Huddinge, Sweden
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Bełdowski P, Przybyłek M, Sionkowska A, Cysewski P, Gadomska M, Musiał K, Gadomski A. Effect of Chitosan Deacetylation on Its Affinity to Type III Collagen: A Molecular Dynamics Study. MATERIALS (BASEL, SWITZERLAND) 2022; 15:463. [PMID: 35057179 PMCID: PMC8781747 DOI: 10.3390/ma15020463] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 02/04/2023]
Abstract
The ability to form strong intermolecular interactions by linear glucosamine polysaccharides with collagen is strictly related to their nonlinear dynamic behavior and hence bio-lubricating features. Type III collagen plays a crucial role in tissue regeneration, and its presence in the articular cartilage affects its bio-technical features. In this study, the molecular dynamics methodology was applied to evaluate the effect of deacetylation degree on the chitosan affinity to type III collagen. The computational procedure employed docking and geometry optimizations of different chitosan structures characterized by randomly distributed deacetylated groups. The eight different degrees of deacetylation from 12.5% to 100% were taken into account. We found an increasing linear trend (R2 = 0.97) between deacetylation degree and the collagen-chitosan interaction energy. This can be explained by replacing weak hydrophobic contacts with more stable hydrogen bonds involving amino groups in N-deacetylated chitosan moieties. In this study, the properties of chitosan were compared with hyaluronic acid, which is a natural component of synovial fluid and cartilage. As we found, when the degree of deacetylation of chitosan was greater than 0.4, it exhibited a higher affinity for collagen than in the case of hyaluronic acid.
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Affiliation(s)
- Piotr Bełdowski
- Institute of Mathematics & Physics, Bydgoszcz University of Science & Technology, 85-796 Bydgoszcz, Poland;
| | - Maciej Przybyłek
- Department of Physical Chemistry, Pharmacy Faculty, Collegium Medicum of Bydgoszcz, Nicolaus Copernicus University in Toruń, Kurpińskiego 5, 85-950 Bydgoszcz, Poland; (M.P.); (P.C.)
| | - Alina Sionkowska
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarin 7, 87-100 Toruń, Poland; (A.S.); (M.G.); (K.M.)
| | - Piotr Cysewski
- Department of Physical Chemistry, Pharmacy Faculty, Collegium Medicum of Bydgoszcz, Nicolaus Copernicus University in Toruń, Kurpińskiego 5, 85-950 Bydgoszcz, Poland; (M.P.); (P.C.)
| | - Magdalena Gadomska
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarin 7, 87-100 Toruń, Poland; (A.S.); (M.G.); (K.M.)
| | - Katarzyna Musiał
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarin 7, 87-100 Toruń, Poland; (A.S.); (M.G.); (K.M.)
| | - Adam Gadomski
- Institute of Mathematics & Physics, Bydgoszcz University of Science & Technology, 85-796 Bydgoszcz, Poland;
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Willumsen N, Thomsen LB, Bager CL, Jensen C, Karsdal MA. Quantification of altered tissue turnover in a liquid biopsy: a proposed precision medicine tool to assess chronic inflammation and desmoplasia associated with a pro-cancerous niche and response to immuno-therapeutic anti-tumor modalities. Cancer Immunol Immunother 2018; 67:1-12. [PMID: 29022089 PMCID: PMC11028250 DOI: 10.1007/s00262-017-2074-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 10/03/2017] [Indexed: 02/06/2023]
Abstract
Immuno-therapy has begun to revolutionize cancer treatment. However, despite the significant progress achieved in regard to the duration of clinical benefits, a substantial number of patients do not respond to these therapies. To improve the outcome of patients receiving immuno-therapy, there is a need for novel biomarkers that can predict and monitor treatment. Tumor microenvironment alterations, more specifically the state of chronic inflammation and desmoplasia (tumor fibrosis), are important factors to consider in this context. Here, we discuss the potential for quantification of altered tissue turnover in a liquid biopsy as a proposed precision medicine tool to assess chronic inflammation and desmoplasia in the immuno-oncology (IO) setting. We highlight the need for novel non-invasive biomarkers in IO and the importance of addressing tumor microenvironment alterations. We focus on desmoplasia and extracellular matrix (ECM) remodeling, and how the composition of the ECM defines T-cell permissiveness in the tumor microenvironment and opens up the possibility for associated liquid biopsy biomarkers. Moreover, we address the importance of the assessment of chronic inflammation, primarily macrophage activity, in a liquid biopsy.
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Affiliation(s)
- Nicholas Willumsen
- Nordic Bioscience, Biomarkers & Research, Herlev Hovedgade 205-207, Herlev, Denmark.
| | - Louise B Thomsen
- Nordic Bioscience, Biomarkers & Research, Herlev Hovedgade 205-207, Herlev, Denmark
| | - Cecilie L Bager
- Nordic Bioscience, Biomarkers & Research, Herlev Hovedgade 205-207, Herlev, Denmark
| | - Christina Jensen
- Nordic Bioscience, Biomarkers & Research, Herlev Hovedgade 205-207, Herlev, Denmark
| | - Morten A Karsdal
- Nordic Bioscience, Biomarkers & Research, Herlev Hovedgade 205-207, Herlev, Denmark
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