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Cirera A, Sevilla P, Manzanares MC, Franch J, Galindo-Moreno P, Gil J. Osseointegration around dental implants biofunctionalized with TGFβ-1 inhibitor peptides: an in vivo study in beagle dogs. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:62. [PMID: 32696084 DOI: 10.1007/s10856-020-06397-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
The aim of this study was to evaluate the effect of biofunctionalization with two TGF-β1 inhibitor peptides, P17 and P144, on osseointegration of CP-Ti dental implants. A total of 36 implants (VEGA, Klockner®) with 3.5 × 8 mm internal connection were used in this study, divided in three groups: (1) control group (n = 12), (2) implants which surfaces were biofunctionalized with P17 peptide inhibitor (n = 12), (3) implants with surfaces biofunctionalized by P144 peptide (n = 12). Three implants, one from each group, were inserted in both hemimandibles of 6 beagle dogs, 2 months after tooth extraction. Two animals were sacrificed at 2, 4 and 8 weeks post implant insertion, respectively. The samples were analyzed by Backscattering Scanning Electron Microscopy (BS-SEM) and histological analysis. Histomorphometric analysis of bone to implant contact (BIC), peri-implant bone fraction (BF) and interthread bone (IB) were carried out. Bone formation around implants measured by quantitative analysis, BS-SEM, was significantly higher in the P17-biofunctionalized implants, 4 and 8 weeks after the implantation. Histomorphometric analysis of BIC, BF and IB showed higher values in the P17-biofunctionalized group at initial stages of healing (2 weeks) and early osseointegration both at 4 and 8 weeks. For P144 biofunctionalized implants, the histomorphometric values obtained are also higher than control group. Accordingly, better results in the experimental groups were proven both by the quantitative and the qualitative analysis. Surface biofunctionalization with TGF-β1 inhibitor peptides, P17 and P144, resulted in better quantitative and qualitative parameters relative to implant osseointegration.
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Affiliation(s)
- Andrea Cirera
- Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Campus Universitario La Cartuja s/n, Barcelona, Spain
| | - Pablo Sevilla
- Escola Universitària Salesiana de Sarrià - EUSS Autonomous University of Barcelona, Barcelona, Spain.
| | - M Cristina Manzanares
- Human Anatomy and Embryology Unit, DPyTEx, School of Medicine, University of Barcelona, Barcelona, Spain
| | - Jordi Franch
- Surgery Department, Veterinary School, Autonomous University of Barcelona, Bellaterra, Barcelona, Spain
| | - Pablo Galindo-Moreno
- Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Barcelona, Spain
| | - Javier Gil
- Universitat Internacional de Catalunya, Facultat de Medicina i Ciències de la Salut, Barcelona, Spain
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Recent Advances of Biphasic Calcium Phosphate Bioceramics for Bone Tissue Regeneration. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1250:177-188. [PMID: 32601945 DOI: 10.1007/978-981-15-3262-7_12] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Biphasic calcium phosphate bioceramics consist of an intimate mixture of hydroxyapatite (HA) and beta-tricalcium phosphate (β-TCP) in varying ratios. Due to their biocompatibility, osteoconductivity, and safety in in vitro, in vivo, and clinical models, they have become promising bone substitute biomaterials and are recommended for use as alternatives for or as additives in bone tissue regeneration in various orthopedic and dental applications. Many studies have demonstrated the potential uses of BCP bioceramics as scaffolds for tissue engineering. Here, we highlight the recent advances in the uses of BCP bioceramics and functionalized BCPs for bone tissue regeneration.
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Biofunctionalization with a TGFβ-1 Inhibitor Peptide in the Osseointegration of Synthetic Bone Grafts: An In Vivo Study in Beagle Dogs. MATERIALS 2019; 12:ma12193168. [PMID: 31569702 PMCID: PMC6803977 DOI: 10.3390/ma12193168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/16/2019] [Accepted: 09/24/2019] [Indexed: 12/19/2022]
Abstract
Objectives: The aim of this research was to determine the osseointegration of two presentations of biphasic calcium phosphate (BCP) biomaterial—one untreated and another submitted to biofunctionalization with a TGF-β1 inhibitor peptide, P144, on dental alveolus. Materials and Methods: A synthetic bone graft was used, namely, (i) Maxresorb® (Botiss Klockner) (n = 12), and (ii) Maxresorb® (Botiss Klockner) biofunctionalized with P144 peptide (n = 12). Both bone grafts were implanted in the two hemimandibles of six beagle dogs in the same surgical time, immediately after tooth extraction. Two dogs were sacrificed 2, 4, and 8 weeks post implant insertion, respectively. The samples were submitted to histomorphometrical and histological analyses. For each sample, we quantified the new bone growth and the new bone formed around the biomaterial’s granules. After optical microscopic histological evaluation, selected samples were studied using backscattered scanning electron microscopy (BS-SEM). Results: The biofunctionalization of the biomaterial’s granules maintains a stable membranous bone formation throughout the experiment timeline, benefitting from the constant presence of vascular structures in the alveolar space, in a more active manner that in the control samples. Better results in the experimental groups were proven both by quantitative and qualitative analysis. Conclusions: Synthetic bone graft biofunctionalization results in slightly better quantitative parameters of the implant’s osseointegration. The qualitative histological and ultramicroscopic analysis shows that biofunctionalization may shorten the healing period of dental biomaterials.
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Sevilla P, Cirera A, Dotor J, Gil FJ, Galindo-Moreno P, Aparicio C. In vitro cell response on CP-Ti surfaces functionalized with TGF-β1 inhibitory peptides. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:73. [PMID: 29796827 DOI: 10.1007/s10856-018-6082-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 04/26/2018] [Indexed: 06/08/2023]
Abstract
Osseointegration of implants is conversely related to the generation of a fibrous tissue capsule around the implant by the host environment. Although TGF-β1 plays many roles in regeneration processes, it is the cytokine to be mostly associated to the production of fibrotic tissue and thus, its inhibition has demonstrated to be beneficial to prevent several fibrotic reactions. Surface biofunctionalization enables the immobilization of biologically active molecules on an implant surface to tailor the biological response of the host. Here, we studied in vitro biological effects of biofunctionalized CP-Ti surfaces with a TGF-β1 inhibitor peptide, P144. A reliable biofunctionalization process that tethers P144 peptides to commercially pure titanium was developed. Differentiation of human mesenchymal stem cells, osteoblasts and fibroblasts on P144-functionalized and control surfaces was assessed at the gene expression and protein production levels. Results showed that P144-functionalized surfaces reduced expression and production of fibrotic differentiation markers and increased osteoblastic differentiation markers. Therefore, biofunctionalization of surfaces with TGF-β1 inhibitor peptides are an alternative promising strategy for inducing osseointegration around medical devices and implants.
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Affiliation(s)
- Pablo Sevilla
- Escola Universitària Salesiana de Sarrià, Pg. Sant Joan Bosco 74, 08017,, Barcelona, Spain.
- Biomaterials, Biomechanics and Tissue Engineering group, Technical University of Catalonia, Pav. E, Av. Diagonal 647,, Barcelona, Spain.
| | - Andrea Cirera
- School of Dentistry, University of Granada, Campus Universitario de Cartuja, s/n, 18071,, Granada, Spain
| | | | - Francisco Javier Gil
- Biomaterials, Biomechanics and Tissue Engineering group, Technical University of Catalonia, Pav. E, Av. Diagonal 647,, Barcelona, Spain
- School of Dentistry, Universitat Internacional de Catalunya, C/ Inmaculada 22,, Barcelona, Spain
| | - Pablo Galindo-Moreno
- School of Dentistry, University of Granada, Campus Universitario de Cartuja, s/n, 18071,, Granada, Spain
| | - Conrado Aparicio
- Department of Restorative Sciences, MDRCBB-Minnesota Dental Research Center for Biomechanics and Biomaterials, University of Minnesota School of Dentistry, 16-250A Moos Tower, 515 Delaware St. SE, Minneapolis, Minneapolis, MN, 55455,, USA
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Screen for reactivation of MeCP2 on the inactive X chromosome identifies the BMP/TGF-β superfamily as a regulator of XIST expression. Proc Natl Acad Sci U S A 2017; 114:1619-1624. [PMID: 28143937 DOI: 10.1073/pnas.1621356114] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Rett syndrome (RS) is a debilitating neurological disorder affecting mostly girls with heterozygous mutations in the gene encoding the methyl-CpG-binding protein MeCP2 on the X chromosome. Because restoration of MeCP2 expression in a mouse model reverses neurologic deficits in adult animals, reactivation of the wild-type copy of MeCP2 on the inactive X chromosome (Xi) presents a therapeutic opportunity in RS. To identify genes involved in MeCP2 silencing, we screened a library of 60,000 shRNAs using a cell line with a MeCP2 reporter on the Xi and found 30 genes clustered in seven functional groups. More than half encoded proteins with known enzymatic activity, and six were members of the bone morphogenetic protein (BMP)/TGF-β pathway. shRNAs directed against each of these six genes down-regulated X-inactive specific transcript (XIST), a key player in X-chromosome inactivation that encodes an RNA that coats the silent X chromosome, and modulation of regulators of this pathway both in cell culture and in mice demonstrated robust regulation of XIST. Moreover, we show that Rnf12, an X-encoded ubiquitin ligase important for initiation of X-chromosome inactivation and XIST transcription in ES cells, also plays a role in maintenance of the inactive state through regulation of BMP/TGF-β signaling. Our results identify pharmacologically suitable targets for reactivation of MeCP2 on the Xi and a genetic circuitry that maintains XIST expression and X-chromosome inactivation in differentiated cells.
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Patel A, Dettleff P, Hernandez E, Martinez V. A comprehensive transcriptome of early development in yellowtail kingfish (Seriola lalandi). Mol Ecol Resour 2015; 16:364-76. [DOI: 10.1111/1755-0998.12451] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 07/20/2015] [Accepted: 07/27/2015] [Indexed: 12/17/2022]
Affiliation(s)
- A. Patel
- FAVET-INBIOGEN; Faculty of Veterinary Sciences; University of Chile; Avda. Santa Rosa 11735 Santiago Chile
| | - P. Dettleff
- FAVET-INBIOGEN; Faculty of Veterinary Sciences; University of Chile; Avda. Santa Rosa 11735 Santiago Chile
| | - E. Hernandez
- FAVET-INBIOGEN; Faculty of Veterinary Sciences; University of Chile; Avda. Santa Rosa 11735 Santiago Chile
| | - V. Martinez
- FAVET-INBIOGEN; Faculty of Veterinary Sciences; University of Chile; Avda. Santa Rosa 11735 Santiago Chile
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Icariin delivery porous PHBV scaffolds for promoting osteoblast expansion in vitro. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3545-52. [DOI: 10.1016/j.msec.2013.04.050] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 04/09/2013] [Accepted: 04/24/2013] [Indexed: 12/24/2022]
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Yaguchi S, Yaguchi J, Wei Z, Jin Y, Angerer LM, Inaba K. Fez function is required to maintain the size of the animal plate in the sea urchin embryo. Development 2011; 138:4233-43. [PMID: 21852402 DOI: 10.1242/dev.069856] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Partitioning ectoderm precisely into neurogenic and non-neurogenic regions is an essential step for neurogenesis of almost all bilaterian embryos. Although it is widely accepted that antagonism between BMP and its inhibitors primarily sets up the border between these two types of ectoderm, it is unclear how such extracellular, diffusible molecules create a sharp and precise border at the single-cell level. Here, we show that Fez, a zinc finger protein, functions as an intracellular factor attenuating BMP signaling specifically within the neurogenic region at the anterior end of sea urchin embryos, termed the animal plate. When Fez function is blocked, the size of this neurogenic ectoderm becomes smaller than normal. However, this reduction is rescued in Fez morphants simply by blocking BMP2/4 translation, indicating that Fez maintains the size of the animal plate by attenuating BMP2/4 function. Consistent with this, the gradient of BMP activity along the aboral side of the animal plate, as measured by pSmad1/5/8 levels, drops significantly in cells expressing Fez and this steep decline requires Fez function. Our data reveal that this neurogenic ectoderm produces an intrinsic system that attenuates BMP signaling to ensure the establishment of a stable, well-defined neural territory, the animal plate.
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Affiliation(s)
- Shunsuke Yaguchi
- Shimoda Marine Research Center, University of Tsukuba, 5-10-1 Shimoda, Shizuoka 415-0025, Japan.
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Adwan H, Zhivkova-Galunska M, Georges R, Eyol E, Kleeff J, Giese NA, Friess H, Bergmann F, Berger MR. Expression of HOXC8 is inversely related to the progression and metastasis of pancreatic ductal adenocarcinoma. Br J Cancer 2011; 105:288-95. [PMID: 21712827 PMCID: PMC3142801 DOI: 10.1038/bjc.2011.217] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Background: The transcription factor HOXC8 regulates many genes involved in tumour progression. This study was to investigate the role of HOXC8 in pancreatic ductal adenocarcinoma (PDAC) growth and metastasis. Methods: The Hoxc8 expression was determined in 15 PDAC cell lines and human specimens by RT–polymerase chain reaction and/or immunohistochemistry. The effects of HOXC8 silencing by RNA interference were investigated by functional tests. Results: The Hoxc8 mRNA expression in PDAC cell lines was negatively related to their growth in vivo. Except for Suit2-007 cells, only those with low Hoxc8 mRNA expression grew in nude rats. Successful down-regulation of HOXC8 expression caused increased proliferation, migration (P⩽0.05) and colony formation (P⩽0.05) in Suit2-007, Panc-1 and MIA PaCa-2 PDAC cells, respectively. The Hoxc8 mRNA levels in diseased human pancreas tissues were significantly increased over normal in PDAC and autoimmune chronic pancreatitis specimens (P<0.01, respectively), but negatively related to tumour stage (P=0.09). In primary and metastatic tumour samples, immunohistochemical staining for HOXC8 was stronger in surrounding than in neoplastic tissues. Furthermore, grading of primary carcinomas was negatively associated with HOXC8 staining (P=0.03). Liver metastases showed the lowest HOXC8 expression of all neoplastic lesions. Conclusion: These data indicate that HOXC8 expression is inversely related to PDAC progression and metastasis.
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Affiliation(s)
- H Adwan
- Toxicology and Chemotherapy Unit, German Cancer Research Center, Deutsches Krebsforschungszentrum Heidelberg, Im Neuenheimer Feld 581, Heidelberg D-69120, Germany
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Fernández I, Darias M, Andree KB, Mazurais D, Zambonino-Infante JL, Gisbert E. Coordinated gene expression during gilthead sea bream skeletogenesis and its disruption by nutritional hypervitaminosis A. BMC DEVELOPMENTAL BIOLOGY 2011; 11:7. [PMID: 21306609 PMCID: PMC3045981 DOI: 10.1186/1471-213x-11-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Accepted: 02/09/2011] [Indexed: 11/10/2022]
Abstract
BACKGROUND Vitamin A (VA) has a key role in vertebrate morphogenesis, determining body patterning and growth through the control of cell proliferation and differentiation processes. VA regulates primary molecular pathways of those processes by the binding of its active metabolite (retinoic acid) to two types of specific nuclear receptors: retinoic acid receptors (RARs) and retinoid X receptors (RXRs), which promote transcription of downstream target genes. This process is well known in most of higher vertebrates; however, scarce information is available regarding fishes. Therefore, in order to gain further knowledge of fish larval development and its disruption by nutritional VA imbalance, the relative expression of some RARs and RXRs, as well as several genes involved in morpho- and skeletogenesis such as peroxisome proliferator-activated receptors (PPARA, PPARB and PPARG); retinol-binding protein (RBP); insulin-like growth factors I and II (IGF1 and IGF2, respectively); bone morphogenetic protein 2 (Bmp2); transforming growth factor β-1 (TGFB1); and genes encoding different extracellular matrix (ECM) proteins such as matrix Gla protein (mgp), osteocalcin (bglap), osteopontin (SPP1), secreted protein acidic and rich in cysteine (SPARC) and type I collagen α1 chain (COL1A1) have been studied in gilthead sea bream. RESULTS During gilthead sea bream larval development, specific expression profiles for each gene were tightly regulated during fish morphogenesis and correlated with specific morphogenetic events and tissue development. Dietary hypervitaminosis A during early larval development disrupted the normal gene expression profile for genes involved in RA signalling (RARA), VA homeostasis (RBP) and several genes encoding ECM proteins that are linked to skeletogenesis, such as bglap and mgp. CONCLUSIONS Present data reflects the specific gene expression patterns of several genes involved in larval fish RA signalling and skeletogenesis; and how specific gene disruption induced by a nutritional VA imbalance underlie the skeletal deformities. Our results are of basic interest for fish VA signalling and point out some of the potential molecular players involved in fish skeletogenesis. Increased incidences of skeletal deformities in gilthead sea bream fed with hypervitaminosis A were the likely ultimate consequence of specific gene expression disruption at critical development stages.
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Affiliation(s)
- Ignacio Fernández
- Unitat de Cultius Experimentals, IRTA Centre de Sant Carles de la Ràpita (IRTA-SCR), Crta, del Poble Nou s/n, 43540 - Sant Carles de la Ràpita (Spain)
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Chung IH, Yamaza T, Zhao H, Choung PH, Shi S, Chai Y. Stem cell property of postmigratory cranial neural crest cells and their utility in alveolar bone regeneration and tooth development. Stem Cells 2009; 27:866-77. [PMID: 19350689 DOI: 10.1002/stem.2] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The vertebrate neural crest is a multipotent cell population that gives rise to a variety of different cell types. We have discovered that postmigratory cranial neural crest cells (CNCCs) maintain mesenchymal stem cell characteristics and show potential utility for the regeneration of craniofacial structures. We are able to induce the osteogenic differentiation of postmigratory CNCCs, and this differentiation is regulated by bone morphogenetic protein (BMP) and transforming growth factor-beta signaling pathways. After transplantation into a host animal, postmigratory CNCCs form bone matrix. CNCC-formed bones are distinct from bones regenerated by bone marrow mesenchymal stem cells. In addition, CNCCs support tooth germ survival via BMP signaling in our CNCC-tooth germ cotransplantation system. Thus, we conclude that postmigratory CNCCs preserve stem cell features, contribute to craniofacial bone formation, and play a fundamental role in supporting tooth organ development. These findings reveal a novel function for postmigratory CNCCs in organ development, and demonstrate the utility of these CNCCs in regenerating craniofacial structures.
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Affiliation(s)
- Il-Hyuk Chung
- Center for Craniofacial Molecular Biology, School of Dentistry, University of Southern California, Los Angeles, California 90033, USA
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Shiga M, Saito M, Hattori M, Torii C, Kosaki K, Kiyono T, Suda N. Characteristic phenotype of immortalized periodontal cells isolated from a Marfan syndrome type I patient. Cell Tissue Res 2007; 331:461-72. [DOI: 10.1007/s00441-007-0528-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2007] [Accepted: 09/20/2007] [Indexed: 10/22/2022]
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