Influence of Inclusion of Apatite-based Microparticles on Osteogenic Cell Pheonotype and Behavior

MRS Advances ◽  
2018 ◽  
Vol 3 (40) ◽  
pp. 2409-2420
Author(s):  
Laura Datko Williams ◽  
Amanda Farley ◽  
Will McAllister ◽  
J. Matthew Mann ◽  
Joseph Kolis ◽  
...  

ABSTRACTThe proximity of minerals found in human hard tissues may influence cell phenotype. Since cells respond to a range of environmental cues, this study sought to identify the influence of two apatite-based microparticles, hydroxyapatite (HA) and fluoroapatite (FA), upon dental and bone cells. After bone marrow stromal cells (BMSCs), 7F2 osteoblasts and dental pulp stem cells (DPSCs) were plated into media with or without HA or FA particles, the cells were analyzed for alkaline phosphatase (ALP) production, collagen I production, osteocalcin production, and mineralization for two weeks. The BMSCs and DPSCs in media without any microparticles produced more ALP compared to those with microparticles from Day 5 forward. In addition, the collagen I and osteocalcin production in cultures without microparticles was higher than in cultures containing either HA or FA particles. While some studies have shown increased osteogeonic differentiation in the presence of mineral particles, those studies used nanoparticles that were able to be internalized by the cells and were smaller than the microparticles used in this study.

2021 ◽  
Author(s):  
Krzysztof Łukowicz ◽  
Barbara Zagrajczuk ◽  
Jarosław Wieczorek ◽  
Katarzyna Millan-Ciesielska ◽  
Izabela Polkowska ◽  
...  

Abstract In this work we dissect the osteoinductive properties of selected bioactive materials obtained in a 3D form, and based on PLGA matrix and 2 types of gel-derived bioactive glasses (SBGs) of SiO2-CaO system, each with and without P2O5. The study is designed to avoid any osteogenic stimuli beyond the putative osteogenic bioactive glass compound of the studied materials. Previously we found that, when used as growth surfaces (i.e. material sheets), some of these materials were capable to support osteogenesis of bone marrow stromal cells (BMSC) without the need for any additional osteogenic cell treatment. In this work we explore further the role of BMP production and signaling upon BMSC culture on selected, SBG/PLGA 3D scaffolds as well as BMSC migration toward the condition media obtained from such cell-loaded materials. Our results show that BMP signaling of osteoprogenitor cells as well as their migration rate may present important indicators of materials osteoinductivity.


2018 ◽  
Vol 74 (9) ◽  
pp. 1368-1374 ◽  
Author(s):  
Sudharsan Periyasamy-Thandavan ◽  
John Burke ◽  
Bharati Mendhe ◽  
Galina Kondrikova ◽  
Ravindra Kolhe ◽  
...  

Abstract Stromal cell-derived factor-1 (SDF-1 or CXCL12) is a cytokine secreted by cells including bone marrow stromal cells (BMSCs). SDF-1 plays a vital role in BMSC migration, survival, and differentiation. Our group previously reported the role of SDF-1 in osteogenic differentiation in vitro and bone formation in vivo; however, our understanding of the post-transcriptional regulatory mechanism of SDF-1 remains poor. MicroRNAs are small noncoding RNAs that post-transcriptionally regulate the messenger RNAs (mRNAs) of protein-coding genes. In this study, we aimed to investigate the impact of miR-141-3p on SDF-1 expression in BMSCs and its importance in the aging bone marrow (BM) microenvironment. Our data demonstrated that murine and human BMSCs expressed miR-141-3p that repressed SDF-1 gene expression at the functional level (luciferase reporter assay) by targeting the 3′-untranslated region of mRNA. We also found that transfection of miR-141-3p decreased osteogenic markers in human BMSCs. Our results demonstrate that miR-141-3p expression increases with age, while SDF-1 decreases in both the human and mouse BM niche. Taken together, these results support that miR-141-3p is a novel regulator of SDF-1 in bone cells and plays an important role in the age-dependent pathophysiology of murine and human BM niche.


Cytotherapy ◽  
2012 ◽  
Vol 14 (7) ◽  
pp. 791-801 ◽  
Author(s):  
Hideki Agata ◽  
Mika Yamazaki ◽  
Mariko Uehara ◽  
Akiko Hori ◽  
Yoshinori Sumita ◽  
...  

2006 ◽  
Vol 15 (04) ◽  
pp. 245-257 ◽  
Author(s):  
H. J. Rolf ◽  
K. G. Wiese ◽  
H. Siggelkow ◽  
H. Schliephake ◽  
G. A. Bubernik

2013 ◽  
Author(s):  
Sylvia Thiele ◽  
Alexander Rauch ◽  
Jan P Tuckermann ◽  
Lorenz C Hofbauer ◽  
Martina Rauner

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