scholarly journals The Osteogenesis of Bone Marrow Stem Cells on mPEG-PCL-mPEG/Hydroxyapatite Composite Scaffold via Solid Freeform Fabrication

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Han-Tsung Liao ◽  
Yo-Yu Chen ◽  
Yu-Ting Lai ◽  
Ming-Fa Hsieh ◽  
Cho-Pei Jiang
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Bone Tissue ◽  
Composite Scaffold ◽  
Solid Freeform Fabrication ◽  
Bone Marrow Stem Cells ◽  
High Porosity ◽  
Tissue Scaffold

The study described a novel bone tissue scaffold fabricated by computer-aided, air pressure-aided deposition system to control the macro- and microstructure precisely. The porcine bone marrow stem cells (PBMSCs) seeded on either mPEG-PCL-mPEG (PCL) or mPEG-PCL-mPEG/hydroxyapatite (PCL/HA) composite scaffold were cultured under osteogenic medium to test the ability of osteogenesisin vitro. The experimental outcomes indicated that both scaffolds possessed adequate pore size, porosity, and hydrophilicity for the attachment and proliferation of PBMSCs and the PBMSCs expressed upregulated genes of osteogensis and angiogenesis in similar manner on both scaffolds. The major differences between these two types of the scaffolds were the addition of HA leading to higher hardness of PCL/HA scaffold, cell proliferation, and VEGF gene expression in PCL/HA scaffold. However, thein vivobone forming efficacy between PBMSCs seeded PCL and PCL/HA scaffold was different from thein vitroresults. The outcome indicated that the PCL/HA scaffold which had bone-mimetic environment due to the addition of HA resulted in better bone regeneration and mechanical strength than those of PCL scaffold. Therefore, providing a bone-mimetic scaffold is another crucial factor for bone tissue engineering in addition to the biocompatibility, 3D architecture with high porosity, and interpored connection.

scholarly journals Acceleration of Bone Regeneration in Critical-Size Defect Using BMP-9-Loaded nHA/ColI/MWCNTs Scaffolds Seeded with Bone Marrow Mesenchymal Stem Cells

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Ran Zhang ◽  
Xuewen Li ◽  
Yao Liu ◽  
Xiaobo Gao ◽  
Tong Zhu ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Composite Scaffold ◽  
Marrow Mesenchymal Stem Cells

Biocompatible scaffolding materials play an important role in bone tissue engineering. This study sought to develop and characterize a nano-hydroxyapatite (nHA)/collagen I (ColI)/multi-walled carbon nanotube (MWCNT) composite scaffold loaded with recombinant bone morphogenetic protein-9 (BMP-9) for bone tissue engineering by in vitro and in vivo experiments. The composite nHA/ColI/MWCNT scaffolds were fabricated at various concentrations of MWCNTs (0.5, 1, and 1.5% wt) by blending and freeze drying. The porosity, swelling rate, water absorption rate, mechanical properties, and biocompatibility of scaffolds were measured. After loading with BMP-9, bone marrow mesenchymal stem cells (BMMSCs) were seeded to evaluate their characteristics in vitro and in a critical sized defect in Sprague-Dawley rats in vivo. It was shown that the 1% MWCNT group was the most suitable for bone tissue engineering. Our results demonstrated that scaffolds loaded with BMP-9 promoted differentiation of BMMSCs into osteoblasts in vitro and induced more bone formation in vivo. To conclude, nHA/ColI/MWCNT scaffolds loaded with BMP-9 possess high biocompatibility and osteogenesis and are a good candidate for use in bone tissue engineering.

Micro-vesicles derived from bone marrow stem cells protect the kidney both in vivo and in vitro by microRNA-dependent repairing

Nephrology ◽  
2015 ◽  
Vol 20 (9) ◽  
pp. 591-600 ◽  
Author(s):  
Juan He ◽  
Yan Wang ◽  
Xingyan Lu ◽  
Bei Zhu ◽  
Xiaohua Pei ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Bone Marrow Stem Cells

scholarly journals Synthesis of 2’-5’-oligoadenylates and study on their effect on proliferation and migration of bone marrow stem cells of mice in vitro and in vivo

2007 ◽  
Vol 23 (1) ◽  
pp. 14-20 ◽  
Author(s):  
Z. Yu. Tkachuk ◽  
I. Ya. Dubey ◽  
T. G. Yakovenko ◽  
L. I. Semernikova ◽  
S. O. Shapoval ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Bone Marrow Stem Cells ◽  
And Migration ◽  
Proliferation And Migration

Isolation, Differentiation, and Characterization of Human Bone Marrow Stem Cells In Vitro and In Vivo

2019 ◽  
pp. 53-70 ◽  
Author(s):  
Janos Kanczler ◽  
Rahul S. Tare ◽  
Patrick Stumpf ◽  
Timothy J. Noble ◽  
Cameron Black ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Bone Marrow Stem Cells ◽  
Human Bone ◽  
Human Bone Marrow

Abstract 130: Ox-LDL Impairs The Survival Of Bone Marrow Stem Cells Partially Through Membrane Damage Independent Of ROS Production In Vitro

2014 ◽  
Vol 115 (suppl_1) ◽  
Author(s):  
Xin Li ◽  
Yuan Xiao ◽  
Yuqi Cui ◽  
Hua Zhu ◽  
Chandrakala A Narasimhulu ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Cell Death ◽  
Membrane Damage ◽  
Final Concentration ◽  
Bone Marrow Stem Cells ◽  
Cell Membrane Damage ◽  
Cell Based Therapy

Aims: cell-based therapy with bone marrow stem cells (MSCs) remains a viable option for tissue repair and regeneration. One of the major challenges for cell-based therapy is the limited survival of the cells after in vivo administration. The exact mechanism(s) for impaired in vivo survival of the implanted MSCs remains to be defined. Oxidized low-density lipid protein (ox-LDL) is a natural product in human blood, and the major contributor to the development of atherosclerosis. The present study was to investigate the effect of ox-LDL on the survival of bone marrow stem cells and the mechanisms in vitro. Methods and Results: Rat bone marrow multipotent adult progenitor cells (MAPCs) were treated with ox-LDL (with the final concentration of 10 and 20 ug/ml) for up to 48 hours. Exposure to ox-LDL resulted in significant cell death and apoptosis of MAPCs in association with a significant increase in LDH release in the conditioned media in a dose- and time-dependent manner, indicating significant cell membrane damage. The membrane damage was further confirmed with the rapid entry of the small fluorescent dye FM1-43 as detected using confocal microscope. Ox-LDL generated a significant amount of reactive oxygen species (ROS) in the culture system as measured with electron paramagnetic resonance spectroscopy. The antioxidant N-acetylcysteine (NAC, 0.1 mM) completely inhibited the production of ROS from ox-LDL. However, it didn’t prevent ox-LDL-induced cell death or apoptosis. However, pre-treatment of the cells with the specific membrane protective recombinant human MG53 protein (rhMG53)(66 ug/ml, final concentration) significantly, reduced LDH release and the entry of FM1-43 dye into the cells exposed to ox-LDL. Conclusion: Ox-LDL enhanced cell death and apoptosis of MAPCs with a mechanism independent of ROS generation in vitro. Ox-LDL impaired the survival of MAPCs partially through cell membrane damage in vitro.

scholarly journals Thy1-positive bone marrow stem cells express liver-specific genes in vitro and can mature into hepatocytes in vivo

2007 ◽  
Vol 2 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Si Hyun Bae ◽  
Jong Young Choi ◽  
Seung Kew Yoon ◽  
Il-Hoan Oh ◽  
Kun Ho Yoon ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Bone Marrow Stem Cells

scholarly journals Biological properties of bone marrow stem cells and adipose-derived stem cells derived from T2DM rats: a comparative study

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Lei Wang ◽  
Shaojie Shi ◽  
Ruiping Bai ◽  
Yue Wang ◽  
Zhao Guo ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Tissue Regeneration ◽  
Cell Sheet ◽  
Biological Properties ◽  
Bone Marrow Stem Cells ◽  
Adipose Derived Stem Cells ◽  
Autologous Mesenchymal Stem Cells

Abstract Background Patients with type 2 diabetes mellitus (T2DM), especially those with poor glycemic control, are characterized by low bone mass and destruction of bone microstructure. Nowadays, autologous mesenchymal stem cells (auto-MSCs) have been used to repair defects and promote tissue regeneration due to handy source, low immunogenicity and self-renewing and multi-differentiating potential. However, T2DM changed the biological properties of auto-MSCs, and investigating the most suitable auto-MSCs for T2DM patients becomes a focus in tissue engineering. Results In this research, we compared the biological characteristics of adipose-derived stem cells (ASCs) and bone marrow stem cells (BMSCs) derived from T2DM rats. These results demonstrated that ASCs had a higher proliferation rate, colony-formation and cell-sheet forming ability, while BMSCs got better osteogenesis-related staining, expression of osteogenesis-related genes and proteins, and osteogenic capacity in vitro. Conclusions As it turned out, ASCs from T2DM had a higher proliferation, while BMSCs had significantly higher osteogenetic ability no matter in vitro and in vivo. Therefore, we should take into account the specific and dominated properties of MSC according to different needs to optimize the protocols and improve clinical outcomes for tissue regeneration of T2DM patients.

Sign in / Sign up

Export Citation Format

Share Document