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Zhang Q, Qu X, Liang C, Li H, Du S, Wang C, Xie Y, Zheng Y, Wang L. Effect of oligonucleotide MT01 delivered by N-isopropylacrylamide modified polyethyleneimine for bone regeneration. Front Bioeng Biotechnol 2023; 11:1204571. [PMID: 37404683 PMCID: PMC10315576 DOI: 10.3389/fbioe.2023.1204571] [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: 04/12/2023] [Accepted: 06/09/2023] [Indexed: 07/06/2023] Open
Abstract
Objective: This study aimed to investigate the regulatory effect of N-isopropylacrylamide-modified polyethyleneimine (PEN)-delivered oligodeoxynucleotide (ODN) MT01 on bone regeneration in vitro and in vivo. Methods: A polyethylenimine (PEI) derivative, PEN, was constructed through Michael addition and employed as a carrier for ODN MT01 transfection. PEN/MT01 nanocomposites were characterized using agarose gel retardation assay, size distribution, zeta potential and transmission electron microscopy. The Cell Counting Kit-8 (CCK-8) assay was used to detect the effect of PEN on cell viability. Alkaline phosphatase (ALP) staining was used to detect the osteogenic differentiation ability of PEN/MT01 nanocomposite. Real-time quantitative PCR (q RT-PCR) and enzyme-linked immunosorbent assay (ELISA) were used to detect the regulatory effects of PEN/MT01 nanocomposite on osteogenic differentiation gene expression. Rat model was observed using the skull defect method and verified using micro-computed tomography (CT), serum biochemical indices, hematoxylin and eosin (H&E) staining and Immunohistochemistry (IHC). Results: PEN had good biological properties and could deliver MT01 well to achieve efficient transmission of MT01. PEN/MT01 nanocomposites were effectively transfected into MC3T3-E1 cells at a ratio of 6.0. CCK-8 assay displayed that PEN had no cytotoxicity to MC3T3-E1 cells. Additionally, PEN/MT01 nanocomposites could promote the expression of osteogenic genes. In vivo results revealed that PEN/MT01 nanocomposites could promote bone regeneration more effectively than the other groups. Conclusion: PEN has good biocompatibility and low toxicity, which is a good carrier for ODN MT01. PEN-delivered MT01 can be potentially employed as a useful approach to achieving bone regeneration.
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Affiliation(s)
- Qian Zhang
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Jilin University, Changchun, China
| | - Xingyuan Qu
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Jilin University, Changchun, China
| | - Chen Liang
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Jilin University, Changchun, China
| | - Hongyan Li
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Siyu Du
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Jilin University, Changchun, China
| | - Chang Wang
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Jilin University, Changchun, China
| | - Yuandong Xie
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Jilin University, Changchun, China
| | - Yi Zheng
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Lei Wang
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
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Mao Y, Chen Y, Li W, Wang Y, Qiu J, Fu Y, Guan J, Zhou P. Physiology-Inspired Multilayer Nanofibrous Membranes Modulating Endogenous Stem Cell Recruitment and Osteo-Differentiation for Staged Bone Regeneration. Adv Healthc Mater 2022; 11:e2201457. [PMID: 36027596 DOI: 10.1002/adhm.202201457] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/23/2022] [Indexed: 01/28/2023]
Abstract
Bone regeneration involves a cascade of sophisticated, multiple-staged cellular and molecular events, where early-phase stem cell recruitment mediated by chemokines and late-phase osteo-differentiation induced by pro-osteogenic factors play the crucial roles. Herein, enlightened by a bone physiological and regenerative mechanism, the multilayer nanofibrous membranes (PLLA@SDF-1α@MT01) consisting of PLLA/MT01 micro-sol electrospun nanofibers as intima and PLLA/PEG/SDF-1α electrospun nanofibers as adventitia are fabricated through micro-sol electrospinning and manual multi-layer stacking technologies. In vitro releasing profiles show that PLLA@SDF-1α@MT01 represents the rapid release of stromal cell-derived SDF-1α (SDF-1α) in the outer layers, while with long-term sustained release of MT01 in the inner layer. Owing to interconnected porosity like the natural bone extracellular matrix and improved hydrophilia, PLLA@SDF-1α@MT01 manifests good biocompatibility both in vitro and in vivo. Furthermore, PLLA@SDF-1α@MT01 can promote bone marrow mesenchymal stem cells (BMSCs) migration by amplifying the SDF-1α/CXCR4 axis and stimulating BMSCs osteo-differentiation via activating the MAPK pathway in vitro. PLLA@SDF-1α@MT01, with a programmed dual-delivery system, exhibits the synergetic promotion of bone regeneration and vascularization by emulating key characteristics of the staged bone repair in vivo. Overall, PLLA@SDF-1α@MT01 that mimics the endogenous cascades of bone regeneration can enrich the physiology-mimetic staged regenerative strategy and represent a promising tissue-engineered scaffold for the bone defect.
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Affiliation(s)
- Yingji Mao
- Department of Orthopedics, The First Affiliated Hospital, School of Life Science, Bengbu Medical College, Bengbu, 233030, China.,Anhui Province Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, 233030, China
| | - Yu Chen
- Department of Orthopedics, The First Affiliated Hospital, School of Life Science, Bengbu Medical College, Bengbu, 233030, China.,Department of Plastic Surgery, The First Affiliated Hospital, Bengbu Medical College, Bengbu, 233004, China
| | - Weifeng Li
- Department of Orthopedics, The First Affiliated Hospital, School of Life Science, Bengbu Medical College, Bengbu, 233030, China
| | - Ying Wang
- Department of Orthopedics, The First Affiliated Hospital, School of Life Science, Bengbu Medical College, Bengbu, 233030, China.,Department of Plastic Surgery, The First Affiliated Hospital, Bengbu Medical College, Bengbu, 233004, China
| | - Jingjing Qiu
- Anhui Province Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, 233030, China
| | - Yingxiao Fu
- Department of Orthopedics, The First Affiliated Hospital, School of Life Science, Bengbu Medical College, Bengbu, 233030, China
| | - Jianzhong Guan
- Department of Orthopedics, The First Affiliated Hospital, School of Life Science, Bengbu Medical College, Bengbu, 233030, China.,Anhui Province Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, 233030, China
| | - Pinghui Zhou
- Department of Orthopedics, The First Affiliated Hospital, School of Life Science, Bengbu Medical College, Bengbu, 233030, China.,Anhui Province Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, 233030, China
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Nihashi Y, Miyoshi M, Umezawa K, Shimosato T, Takaya T. Identification of a Novel Osteogenetic Oligodeoxynucleotide (osteoDN) That Promotes Osteoblast Differentiation in a TLR9-Independent Manner. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1680. [PMID: 35630904 PMCID: PMC9145662 DOI: 10.3390/nano12101680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/06/2022] [Accepted: 05/13/2022] [Indexed: 12/11/2022]
Abstract
Dysfunction of bone-forming cells, osteoblasts, is one of the causes of osteoporosis. Accumulating evidence has indicated that oligodeoxynucleotides (ODNs) designed from genome sequences have the potential to regulate osteogenic cell fate. Such osteogenetic ODNs (osteoDNs) targeting and activating osteoblasts can be the candidates of nucleic acid drugs for osteoporosis. In this study, the ODN library derived from the Lacticaseibacillus rhamnosus GG genome was screened to determine its osteogenetic effect on murine osteoblast cell line MC3T3-E1. An 18-base ODN, iSN40, was identified to enhance alkaline phosphatase activity of osteoblasts within 48 h. iSN40 also induced the expression of osteogenic genes such as Msx2, osterix, collagen type 1α, osteopontin, and osteocalcin. Eventually, iSN40 facilitated calcium deposition on osteoblasts at the late stage of differentiation. Intriguingly, the CpG motif within iSN40 was not required for its osteogenetic activity, indicating that iSN40 functions in a TLR9-independent manner. These data demonstrate that iSN40 serves as a novel osteogenetic ODN (osteoDN) that promotes osteoblast differentiation. iSN40 provides a potential seed of the nucleic acid drug that activating osteoblasts for osteoporosis therapy.
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Affiliation(s)
- Yuma Nihashi
- Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan; (Y.N.); (T.S.)
| | - Mana Miyoshi
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan;
| | - Koji Umezawa
- Department of Agricultural and Life Sciences, Faculty of Agriculture, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan;
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan
| | - Takeshi Shimosato
- Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan; (Y.N.); (T.S.)
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan;
- Department of Agricultural and Life Sciences, Faculty of Agriculture, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan;
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan
| | - Tomohide Takaya
- Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan; (Y.N.); (T.S.)
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan;
- Department of Agricultural and Life Sciences, Faculty of Agriculture, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan;
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, 8304 Minami-minowa, Kami-ina, Nagano 399-4598, Japan
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Shinji S, Umezawa K, Nihashi Y, Nakamura S, Shimosato T, Takaya T. Identification of the Myogenetic Oligodeoxynucleotides (myoDNs) That Promote Differentiation of Skeletal Muscle Myoblasts by Targeting Nucleolin. Front Cell Dev Biol 2021; 8:616706. [PMID: 33585451 PMCID: PMC7874222 DOI: 10.3389/fcell.2020.616706] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/07/2020] [Indexed: 12/18/2022] Open
Abstract
Herein we report that the 18-base telomeric oligodeoxynucleotides (ODNs) designed from the Lactobacillus rhamnosus GG genome promote differentiation of skeletal muscle myoblasts which are myogenic precursor cells. We termed these myogenetic ODNs (myoDNs). The activity of one of the myoDNs, iSN04, was independent of Toll-like receptors, but dependent on its conformational state. Molecular simulation and iSN04 mutants revealed stacking of the 13-15th guanines as a core structure for iSN04. The alkaloid berberine bound to the guanine stack and enhanced iSN04 activity, probably by stabilizing and optimizing iSN04 conformation. We further identified nucleolin as an iSN04-binding protein. Results showed that iSN04 antagonizes nucleolin, increases the levels of p53 protein translationally suppressed by nucleolin, and eventually induces myotube formation by modulating the expression of genes involved in myogenic differentiation and cell cycle arrest. This study shows that bacterial-derived myoDNs serve as aptamers and are potential nucleic acid drugs directly targeting myoblasts.
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Affiliation(s)
- Sayaka Shinji
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, Nagano, Japan
| | - Koji Umezawa
- Department of Agricultural and Life Science, Faculty of Agriculture, Shinshu University, Nagano, Japan
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
| | - Yuma Nihashi
- Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, Nagano, Japan
| | - Shunichi Nakamura
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, Nagano, Japan
| | - Takeshi Shimosato
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, Nagano, Japan
- Department of Agricultural and Life Science, Faculty of Agriculture, Shinshu University, Nagano, Japan
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
- Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, Nagano, Japan
| | - Tomohide Takaya
- Department of Agriculture, Graduate School of Science and Technology, Shinshu University, Nagano, Japan
- Department of Agricultural and Life Science, Faculty of Agriculture, Shinshu University, Nagano, Japan
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
- Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, Nagano, Japan
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Yu W, Zheng Y, Li H, Lin H, Chen Z, Tian Y, Chen H, Zhang P, Xu X, Shen Y. The Toll-like receptor ligand, CpG oligodeoxynucleotides, regulate proliferation and osteogenic differentiation of osteoblast. J Orthop Surg Res 2020; 15:327. [PMID: 32795334 PMCID: PMC7427903 DOI: 10.1186/s13018-020-01844-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 07/30/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND This study aimed to investigate the regulation of CpG oligodeoxynucleotides (ODNs) on proliferation and osteogenic differentiation of MC3T3 cells. METHODS The laser co-focusing and flow cytometry assay were employed to detect cell uptake of CpG ODN 2006. Twelve ODNs were sythesized, and their effects on proliferation and differentiation were detected by MTT and alkaline phosphatase (ALP) activity assay. Flow cytometry assay was used to examine the regulation of CpG ODN on cell cycle. Quantitative real-time PCR (qRT-PCR) and western blot were used to evaluate the regulation of CpG ODN on mRNA and protein expression of osteogenic differentiation genes. RESULTS The phosphorothioate CpG ODN 2006 could efficiently enter the MC3T3 cells in 1 h and locate in the cytoplasm. The MTT assay demonstrated CpG ODNs could promote MC3T3 cell proliferation and differentiation in the early stage, and gradually attenuated along with the increase of treating time, except for BW001 and FC001. qRT-PCR assay demonstrated that all the 12 CpG ODNs could promote the relative expression level of osteogenic differentiated genes, SP7 and OCN. In addition, western blot analysis suggested the CpG ODNs of BW001 and FC001 could increase the protein expression of P27Kip1 and Runx2 and decrease the protein expression of cyclin D1. CONCLUSION The selected CpGODNs may be a potential gene therapy for bone regeneration of periodontitis.
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Affiliation(s)
- Wenwen Yu
- Department of Periodontics, School and hospital of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, Jilin, 130021, China
- Department of Orthodontics, Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction; Tianjin Stomatological Hospital; Hospital of Stomatology, Nankai University, 75 Dagu North Road, Tianjin, 300041, China
| | - Yi Zheng
- Department of Periodontics, School and hospital of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, Jilin, 130021, China
| | - Hongyan Li
- Department of Periodontics, School and hospital of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, Jilin, 130021, China
| | - Hongbing Lin
- Department of Periodontics, School and hospital of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, Jilin, 130021, China
| | - Zhen Chen
- Department of Periodontics, School and hospital of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, Jilin, 130021, China
| | - Yue Tian
- Department of Periodontics, School and hospital of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, Jilin, 130021, China
| | - Huishan Chen
- Department of Periodontics, School and hospital of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, Jilin, 130021, China
| | - Peipei Zhang
- Department of Periodontics, School and hospital of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, Jilin, 130021, China
| | - Xiaowei Xu
- Department of Periodontics, School and hospital of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, Jilin, 130021, China
| | - Yuqin Shen
- Department of Periodontics, School and hospital of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, Jilin, 130021, China.
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Zheng Y, Lin C, Hou X, Ma N, Yu W, Xu X, Lou Y, Fei H, Shen Y, Sun X. Enhancing the osteogenic capacity of MG63 cells through N-isopropylacrylamide-modified polyethylenimine-mediated oligodeoxynucleotide MT01 delivery. RSC Adv 2017. [DOI: 10.1039/c6ra27182k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The delivery of MT01 into MG63 cells was successfully achieved using the PEN derivative.
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Ye C, Yi Z, Yuqin S, Xu H, Yixin L, Xinhua S. [Effect of MT01/PEN complexes on the expression of osteoprotegerin and receptor activator of nuclear factor κB ligand in human osteoblast-like cell line MG63]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2016; 34:32-36. [PMID: 27266195 PMCID: PMC7030777 DOI: 10.7518/hxkq.2016.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 11/13/2015] [Indexed: 06/06/2023]
Abstract
OBJECTIVE This study aims to synthesize MTO1 (a kind of oligodeoxynucleotides) and N-isopropylacrylamide-modified polyethylenimines (PEN) complexes (MT01/PEN) as well as to investigate the effect of the complexes on the expression of osteoprotegerin (OPG) and the receptor activator of nuclear factor κB ligand (RANKL) in the human osteoblast-like cell line MG63. METHODS MG63 cells were transfected by MT01/PEN complexes formed with three different mass ratios (1:2, 1:4, 1:6) of MT01 to PEN. MT01 and MT01-s were used as positive control. Enzyme-linked immunosorbent assay and real-time polymerase chain reaction were performed to estimate the amount of OPG and RANKL released into the culture media and in MG63 at 24, 48, 72 h. RESULTS MG63 responded to the MT01/PEN complexes by significantly upregulating the OPG on the protein and mRNA levels (P < 0.05). The protein and mRNA levels of RANKL were lower in most of the groups with complexes, and the OPG/RANKL ratio were higher (P < 0.05). MG63 were affected by the MT01/PEN complexes with different mass ratios, particularly when the ratio was 1:6. CONCLUSION MT01 can enhance the promotion of ossification by establishing the delivery system with PEN.
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Haijiao Y, Yuqin S, Yin L, Han G, Yue Z, Tianqi H, Chongtao L. [Effect of specific sequence oligodeoxynucleotide MT01 on the proliferation, apoptosis, and cell cycle of osteoblasts invaded by Porphyromonas gingivalis]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2015; 33:617-621. [PMID: 27051956 PMCID: PMC7030364 DOI: 10.7518/hxkq.2015.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 09/21/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVE This aimed to investigate the effect of specific sequence oligodeoxynucleotide MT01 on the biological properties of osteoblasts invaded by Porphyromonas gingivalis (P. gingivalis ) by evaluating proliferation, cell cycle, and apoptosis. METHODS MG63 osteoblasts were recovered and incubated with MT01, CpG ODN, metronidazole (MNZ), and gentamicin (GEN) for 3 h. P. gingivalis (the multiplicity of infection was 100:1) was added subsequently and cocultured for another 24 and 48 h. Cells with PBS comprised the blank group, whereas cells with P. gingivalis comprised the negative controls. Six experimental groups were established: PBS group, P. gingivalis group, MT01+P. gingivalis group, CpG ODN+ P. gingivalis group, MNZ+P. gingivalis group, and GEN+P. gingivalis group. The proliferative ability was measured by methyl thiazolyl tetrazolium assay, and the percentages of apoptosis and cell cycle were examined by flow cytometry. RESULTS Compared with the blank group, proliferation increased significantly in the MT01+P. gingivalis group (P < 0.05). The ratio of cells was lower at the G₁ phase and higher at the S phase in the MT01+P. gingivalis group compared with the results in the P. gingivalis group (P < 0.05). Early cell apoptosis in the MT01+P. gingivalis group was significantly lower than that in the P. gingivalis group (P < 0.05). CONCLUSION MT01 can promote the proliferation, reduce the ratio of the G₁phase, increase the ratio of the S phase, and inhibit the early apoptosis of osteoblasts invaded by P. gingivalis.
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Ziqing D, Yuqin S, Yue Z, Yin L, Han G, Haijiao Y, Chongtao L. [Effects of periodontitis patient's own tissue nucleic acid on the mRNA expression of osteoclast-related factors in murine macrophages]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2015; 33:192-196. [PMID: 26189240 PMCID: PMC7040984 DOI: 10.7518/hxkq.2015.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 11/21/2014] [Indexed: 06/04/2023]
Abstract
OBJECTIVE This paper aimed to determine the mRNA expression of osteoclast-related factors interleukin-6 (IL-6), interleukin-12 (IL-12) p35, IL-12p40, matrix metalloproteinase-9 (MMP-9), nuclear factor of activated T-cells cytoplasmic 1 (NFATcl), receptor activator of nuclear factor-KB (RANK), and tumor necrosis factor-α (TNF-α) mRNA in murine macrophages infected by a periodontitis patient's own tissue nucleic acid. Another aim was to investigate the effects of a periodontitis patient's own tissue nucleic acid on the differentiation of macrophages into osteoclasts. METHODS Inflammatory periodontal tissue samples of chronic periodontitis patients were taken during periodontal flap surgery, and healthy gingival tissue samples were taken from orthodontic patients during tooth extractions. Total RNA from periodontal tissue was extracted and reversely transcribed into cDNA and then cryo-preserved until further use. First, specific sequence oligodeoxynucleotide MT0I at a concentration of 1 µg · mL⁻¹ was added in murine macrophage RAW264.7, and the cells were incubated for 3 hours. Cells with PBS (1 µg · mL⁻¹) were used as negative controls. The inflammatory periodontal tissue cDNA and healthy periodontal tissue cDNA (1 µg · mL⁻¹) was added subsequently. There were four experimental groups: healthy periodontal tissue cDNA+ RAW264.7, inflammatory periodontal tissue cDNA+RAW264.7, MT01+healthy periodontal tissue cDNA+RAW264.7, and MT01+inflammatory periodontal tissue cDNA+RAW264.7. Real-time quantitative polymerase chain reaction was used to detect the mRNA expression of osteoclast-related factors IL-6, IL-12p35, IL-12p4O, MMP-9, NFATcl, RANK, and TNF-α mRNA after 3, 6, 12, and 24-hours. RESULTS The mRNA levels of osteoclast-related factors NFATc1, MMP-9, TNF-a, IL-6, IL-12p40, IL-12p35, and RANK in RAW264.7 were markedly upregulated with the treatment of periodontitis patient's own tissue nucleic acid. However, the mRNA expression of osteoclast-related factors was inhibited by use of an immunosuppressant MT01. CONCLUSION The periodontitis patient's own tissue nucleic acid could promote the differentiation of murine macrophage into osteoclasts.
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Du X, Man D, Li D, Kang N, Dong P, Fang D, Zhu X, Zhou Y. The Effect of Specific Oligonucleotides on the Proliferation of Human Bone-Marrow Mesenchymal Stem Cells. J HARD TISSUE BIOL 2014. [DOI: 10.2485/jhtb.23.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Sun J, Zhou H, Deng Y, Zhang Y, Gu P, Ge S, Fan X. Conditioned medium from bone marrow mesenchymal stem cells transiently retards osteoblast differentiation by downregulating runx2. Cells Tissues Organs 2012; 196:510-22. [PMID: 22906827 DOI: 10.1159/000339245] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2012] [Indexed: 01/14/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are attractive candidates for cell therapy and regenerative medicine because of their potential for proliferation and multilineage differentiation. MSCs secrete various cytokines, acting as trophic mediators to regulate neighboring cells. Osteoblasts are the cells directly responsible for forming new bone, and they are the final target of many osteogenic regulators. However, the induction effect of MSCs on osteoblasts is still unknown. In this study, we isolated osteoblasts from rat calvariae and investigated their proliferation and differentiation under induction of varied concentrations of MSC-conditioned medium (MSC-CM). Cells in the MSC-CM groups showed a reduction in cell proliferation at 3-6 days, and a decrease in the expression of osteocalcin and osteopontin at 3 days, with low levels of alkaline phosphatase activity. The expression of osteogenic markers went back to normal at 7 days. In order to evaluate the molecular mechanisms underlying this suppression, levels of two osteoblastic transcription factors, runt-related transcription factor 2 (Runx2) and osterix (Osx), were detected at both mRNA and protein levels. The results indicated that MSC-CM significantly inhibited Runx2 expression in a concentration-dependent manner. However, the effect was not due to the inhibition of Osx, for Osx was not significantly altered. This work demonstrates that MSCs may suppress osteoblast proliferation and transiently retard osteoblast differentiation by downregulating Runx2. These results highlight the need to take into account the paracrine effect of MSCs when using them in regenerative medicine for the repair of bone defects.
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Affiliation(s)
- Jing Sun
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, PR China
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A specific oligodeoxynucleotide promotes the differentiation of osteoblasts via ERK and p38 MAPK pathways. Int J Mol Sci 2012; 13:7902-7914. [PMID: 22942680 PMCID: PMC3430211 DOI: 10.3390/ijms13077902] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Revised: 05/11/2012] [Accepted: 06/15/2012] [Indexed: 02/07/2023] Open
Abstract
A specific oligodeoxynucleotide (ODN), ODN MT01, was found to have positive effects on the proliferation and activation of the osteoblast-like cell line MG 63. In this study, the detailed signaling pathways in which ODN MT01 promoted the differentiation of osteoblasts were systematically examined. ODN MT01 enhanced the expression of osteogenic marker genes, such as osteocalcin and type I collagen. Furthermore, ODN MT01 activated Runx2 phosphorylation via ERK1/2 mitogen-activated protein kinase (MAPK) and p38 MAPK. Consistently, ODN MT01 induced up-regulation of osteocalcin, alkaline phosphatase (ALP) and type I collagen, which was inhibited by pre-treatment with the ERK1/2 inhibitor U0126 and the p38 inhibitor SB203580. These results suggest that the ERK1/2 and p38 MAPK pathways, as well as Runx2 activation, are involved in ODN MT01-induced up-regulation of osteocalcin, type I collagen and the activity of ALP in MG 63 cells.
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Shen Y, Feng Z, Lin C, Hou X, Wang X, Wang J, Yu Y, Wang L, Sun X. An oligodeoxynucleotide that induces differentiation of bone marrow mesenchymal stem cells to osteoblasts in vitro and reduces alveolar bone loss in rats with periodontitis. Int J Mol Sci 2012; 13:2877-2892. [PMID: 22489131 PMCID: PMC3317693 DOI: 10.3390/ijms13032877] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 02/19/2012] [Accepted: 02/24/2012] [Indexed: 01/01/2023] Open
Abstract
To investigate the effect of oligodeoxynucleotides (ODNs) on the differentiation of rat bone marrow mesenchymal stem cells (BMSCs) to osteoblasts, in order to find a candidate ODN with potential for the treatment of periodontitis, a series of ODNs were designed and selected to test their effect on the promotion of the differentiation of BMSCs to osteoblasts in vitro and on the repair of periodontal tissue in rats with periodontitis. It was found that MT01, one of the ODNs with the sequences of human mitochondrial DNA, stimulated the proliferation of BMSCs, the differentiation of BMSCs to osteoblasts and mRNA expression of bone-associated factors including Runx2, Osterix, OPG, RANKL and collagen I in vitro. In vivo study showed that MT01 prevented the loss of alveolar bone in the rats with periodontitis and induced the production of proteins of OPG and Osterix in the bone tissue. These results indicated that MT01 could induce differentiation of BMSCs to osteoblasts and inhibit the alveolar bone absorption in rats with periodontitis.
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Affiliation(s)
- Yuqin Shen
- Department of Periodontics, School of Stomatology, Jilin University, 1500 Qinghua Road, Changchun 130021, China; E-Mails: (Y.S.); (C.L.)
| | - Zhiyuan Feng
- Department of Orthodontics, People’s Hospital of Shanxi, 29 Shuangta Road, Taiyuan 030012, China; E-Mail:
- Department of Orthodontics, School of Stomatology, Jilin University, 1500 Qinghua Road, Changchun 130021, China; E-Mails: (X.H.); (J.W.)
| | - Chongtao Lin
- Department of Periodontics, School of Stomatology, Jilin University, 1500 Qinghua Road, Changchun 130021, China; E-Mails: (Y.S.); (C.L.)
| | - Xu Hou
- Department of Orthodontics, School of Stomatology, Jilin University, 1500 Qinghua Road, Changchun 130021, China; E-Mails: (X.H.); (J.W.)
| | - Xueju Wang
- Department of Pathology, China-Japan Union Hospital, Jilin University, 1500 Qinghua Road, Changchun 130021, China; E-Mail:
| | - Jing Wang
- Department of Orthodontics, School of Stomatology, Jilin University, 1500 Qinghua Road, Changchun 130021, China; E-Mails: (X.H.); (J.W.)
| | - Yongli Yu
- Department of Immunology, Medical College of Norman Bethune, Jilin University, 1500 Qinghua Road, Changchun 130021, China; E-Mail:
| | - Liying Wang
- Department of Molecular Biology, Medical College of Norman Bethune, Jilin University, 1500 Qinghua Road, Changchun 130021, China
| | - Xinhua Sun
- Department of Orthodontics, School of Stomatology, Jilin University, 1500 Qinghua Road, Changchun 130021, China; E-Mails: (X.H.); (J.W.)
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