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Use of recombinant human bone morphogenetic protein-2 in spine surgery 被引量:5
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作者 Marios Lykissas Ioannis Gkiatas 《World Journal of Orthopedics》 2017年第7期531-535,共5页
Bone morphogenetic proteins are osteoinductive factors which have gained popularity in orthopaedicsurgery and especially in spine surgery. The use of recombinant human bone morphogenetic protein-2 has been officially ... Bone morphogenetic proteins are osteoinductive factors which have gained popularity in orthopaedicsurgery and especially in spine surgery. The use of recombinant human bone morphogenetic protein-2 has been officially approved by the United States Food and Drug Administration only for single level anterior lumbar interbody fusion, nevertheless it is widely used by many surgeons with off-label indications. Despite advantages in bone formation, its use still remains a controversial issue and several complications have been described by authors who oppose their wide use. 展开更多
关键词 recombinant human bone morphogenetic protein-2 SPINE FUSION bone GRAFT Yale UNIVERSITY Open Data project
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Implantation of xenogeneic bone combined with recombinant human bone morphogenetic protein-2 into bone defect—An scanning electron microscopic study
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作者 王常勇 毛天球 +2 位作者 王会信 赵明 朱萧玲 《Journal of Medical Colleges of PLA(China)》 CAS 1997年第2期128-131,共4页
To determine the ability of a new type of composite xenogeneic bone grafting to repair bone defect. Methods: The new type of composite xenogeneic bone was obtained by combining the chemically treated cance1lous bone w... To determine the ability of a new type of composite xenogeneic bone grafting to repair bone defect. Methods: The new type of composite xenogeneic bone was obtained by combining the chemically treated cance1lous bone with recombinant human bone morphogenetic protein-2 (rhBMP-2). It was implanted on the bone defect of rabbit. Results: There was a large amount of new bone formation within the combined material and the amount was increasing as the time elapsed. In contrast, there was a lot of fibrous tissue with a little new bone formed on the area of the bone defect when the treated cancellous bone was implanted alone. Conclusion: The results imply that the rhBMP-2 plays a very important role in new bone formation and the composite xenogeneic bone appear to be an ideal material for repair of bone defect. 展开更多
关键词 recombinant human bone morphogenetic protein-2 bone TRANSPLANTATION CANCELLOUS bone
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CORAL AS A CARRIER FOR RECOMBINANT HUMAN BONE MORPHOGENETIC PROTEIN-2
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作者 张森林 毛天球 +1 位作者 孟昭业 王会信 《Chinese Medical Sciences Journal》 CAS CSCD 1999年第2期125-128,共4页
By combining coral with recombinant human bone morphogenetic protein-2 (rhBMP-2), rhBMP-2/coral composite was obtained in this study. Following implantation of the composite into the muscle pouches of mice, cartilage ... By combining coral with recombinant human bone morphogenetic protein-2 (rhBMP-2), rhBMP-2/coral composite was obtained in this study. Following implantation of the composite into the muscle pouches of mice, cartilage growth was induced in the pores or on the surface of the implants at one week, woven bone at three week and lamellar bone with bone marrow at six week, and coral was absorbed partially. The induced formation of endochondral bone was time-related and rhBMP-2 dose-related. The results of this study indicate that the composite possesses a superior ability of osteogenesis, and coral acts as one of the most suitable rhBMP-2 slowrelease carriers currently available. The composite will be a new type of bone substitute to be used in orthopaedics and maxillofacial surgery. 展开更多
关键词 recombinant human bone morphogenetic protein 2 OSTEOINDUCTION CARRIER
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Heterotopic ossification after the use of recombinant human bone morphogenetic protein-7 被引量:3
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作者 Marianthi Papanagiotou Zoe H Dailiana +5 位作者 Theophilos Karachalios Sokratis Varitimidis Michael Hantes Georgios Dimakopoulos Marianna Vlychou Konstantinos N Malizos 《World Journal of Orthopedics》 2017年第1期36-41,共6页
AIM To present the incidence of heterotopic ossification after the use of recombinant human bone morphogenetic protein-7(rhB MP-7) for the treatment of nonunions.METHODS Bone morphogenetic proteins(BMPs) promote bone ... AIM To present the incidence of heterotopic ossification after the use of recombinant human bone morphogenetic protein-7(rhB MP-7) for the treatment of nonunions.METHODS Bone morphogenetic proteins(BMPs) promote bone formation by auto-induction. Recombinant human BMP-7 in combination with bone grafts was used in 84 patients for the treatment of long bone nonunions. All patients were evaluated radiographicaly for the development of heterotopic ossification during the standard assessment for the nonunion healing. In all patients(80.9%) with radiographic signs of heterotopic ossification, a CT scan was performed. Nonunion site palpation and ROM evaluation of the adjacent jointswere also carried out. Factors related to the patient(age, gender), the nonunion(location, size, chronicity, number of previous procedures, infection, surrounding tissues condition) and the surgical procedure(graft and fixation type, amount of rhB MP-7) were correlated with the development of heterotopic ossification and statistical analysis with Pearsons χ~2 test was performed.RESULTS Eighty point nine percent of the nonunions treated with rh BMP-7, healed with no need for further procedures. Heterotopic bone formation occurred in 15 of 84 patients(17.8%) and it was apparent in the routine radiologi-cal evaluation of the nonunion site, in a mean time of 5.5 mo after the rh BMP-7 application(range 3-12). The heterotopic ossification was located at the femur in 8 cases, at the tibia in 6, and at the humerus in οne patient. In 4 patients a palpable mass was present and only in one patient, with a para-articular knee nonunion treated with rhB MP-7, the size of heterotopic ossification affected the knee range of motion. All the patients with heterotopic ossification were male. Statistical analysis proved that patient's gender was the only important factor for the development of heterotopic ossification(P = 0.007). CONCLUSION Heterotopic ossification after the use of rh BMP-7 in nonunions was common but it did not compromise the final clinical outcome in most cases, and affected only male patients. 展开更多
关键词 NONUNION bone morphogenetic protein recombinant human bone morphogenetic protein-7 HETEROTOPIC OSSIFICATION Long bone bone GRAFT OSTEOINDUCTION
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EFFECTS OF TRANSFORMING GROWTH FACTOR β AND RECOMBINANT HUMAN BONE MORPHOGENETIC PROTEIN 2 ON HUMAN PERIODONTAL LIGAMENT FIBROBLASTS
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作者 司晓辉 刘正 《Journal of Shanghai Second Medical University(Foreign Language Edition)》 2001年第1期36-40,共5页
Objective To evaluate the effects of transforming growth factor β(TGF-β) and recombinant human bone morphogenetic protein 2 (rhBMP2) on human periodontal ligament fibroblasts (HPDLFs). Methods HPDLFs were done prima... Objective To evaluate the effects of transforming growth factor β(TGF-β) and recombinant human bone morphogenetic protein 2 (rhBMP2) on human periodontal ligament fibroblasts (HPDLFs). Methods HPDLFs were done primary culture to detect the distinct concentrations of TGF-P and rhBMF2 on its proliferation, alkaline phosphatase (ALP) activity, osteocalcin (OC) synthesis and formation of the minerali-zed nodules, respectively. Results TGF-β (5~100ng/ml) significantly stimulated the proliferation of HPDLFs. The ALP activity of HPDLFs was evaluated evidently by 5ng/ml TGF-β. TGF-β( 0. 5 ~ 100ng/ml) had no effects on OC synthesis and formation of the mineralized nodules of HPDLFs. rhBMP2 (0. 25~2mg/ ml) had no remarkable effect on the proliferation of HPDLFs. The ALP activity, OC synthesis and forma-tion of the mineralized nodules of HPDLFs were significantly stimulated by 0. 5~ 2mg /ml rhBMP2. Conclusion The effects of TGF-β and rhBMP2 on HPDLFs are dose-dependent. TGF-P can stimulate HPDLFs to express the early marker of osteoblastic phenotype, and it lacks the ability to promote maturation of the osteogenic phenotype. rhBMP2 can not only stimulate the expression but also promote the maturation of osteoblas-tic phenotype of HPDLFs. 展开更多
关键词 transforming growth factor Precombinant human bone morphogenetic protein 2human periodontal ligament fibroblastsalkaline phosphataseosteocalcin mineralization
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Human bone morphogenetic protein-2 gene transfer induces human mesenchymal stem cell proliferation and differentiation in vitro
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作者 李军 范清宇 +3 位作者 钱济先 马保安 周勇 张明华 《Journal of Medical Colleges of PLA(China)》 CAS 2004年第2期115-119,共5页
Objective: To identify eukaryotic expression vector of human bone morphogenetic protein 2 pcDNA3/BMP2, verify its expression in transfected human mesenchymal stem cells (hMSCs) and the effect on hMSCs differentiation.... Objective: To identify eukaryotic expression vector of human bone morphogenetic protein 2 pcDNA3/BMP2, verify its expression in transfected human mesenchymal stem cells (hMSCs) and the effect on hMSCs differentiation. Methods: The BMP2 gene was cloned into a eukaryotic expression vector pcDNA3. Transfected the recombinant into hMSCs by liposome. Immunnohistochemistry and in situ hybridization methods were used to identify the expression of BMP2 mRNA and protein; ALP and Von Kossa stains were performed to identify the BMP2 gene differentiated effect on the hMSCs. Results: The pcDNA3/BMP2 fragments were as large as theory. BMP2 mRNA and protein were expressed and synthesized both in 48 h and 4 weeks after transfection, the ALP and Ca deposit exhibition, which marked the osteogenic lineage of hMSCs, were enhanced and sped. Conclusion: Transfection of pcDNA3/BMP2 is able to provide transient and persistent expression in hMSCs, and promote the MSCs differentiation to osteogenic lineage. 展开更多
关键词 bone morphogenetic protein(BMP2) TRANSFECTION human mesenchymal stem cells (hMSCs) osteogenic differentiation
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Expression of mature peptide of human bone morphogenetic protein-2 in Escherichia coli 被引量:1
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作者 蒲勤 陈苏民 陈南春 《Journal of Medical Colleges of PLA(China)》 CAS 1998年第1期40-42,共3页
To express die mature peptide of human bone morphogenetic protein-2 in Escherichia coil. Methods: TheDNA fragment encoding the mature peptide of human bone morphogenetic protein-2 (hBMP-2m) was inserted into expressio... To express die mature peptide of human bone morphogenetic protein-2 in Escherichia coil. Methods: TheDNA fragment encoding the mature peptide of human bone morphogenetic protein-2 (hBMP-2m) was inserted into expression vectorpDH in which foreign gene was controlled by PRPL promoters. E. coli DH5a transformed with recombinant plasmid pDHB2m wasinduced at 42℃to express the target protein. The expressed product was partially purified and refolded, and then implanted intorat thigh muscles to assay its bone inductive activity. Results: After induction, a protein band on SDS-PAGE gel with an apparentmol. wt. of 13kD was observed to anticipate in the strain carrying pDHB2m, but not in the control. The expressed hBMP-2m accounted for 45%-60% of the total bacterial protein. The expressed product existed in a form of inclusion body. After partially purified and refolded, rhBMP-2m could induce the formation of cartilage and bone tissue heterotopically. Conclusion: The maturepeptide of human bone morphogenetic protein-2 has ben successfully expressed in E. coli and the product has ectopic bone inductive activity. 展开更多
关键词 human bone morphogenetic protein-2 recombinant DNA GENE EXPRESSION
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SPECIFIC BINDING OF HUMAN BONEMORPHOGENETIC PROTEIN (2A) WITH MOUSEOSTEOBLASTIC CELLS
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作者 刘新平 陈苏民 +2 位作者 陈南春 高磊 赵忠良 《Chinese Medical Sciences Journal》 CAS CSCD 1996年第2期97-99,共3页
Human bone morphogenetic protein 2A (hBMP2A) cDNA terminal 567 nucleotides were cloned and expressed in a phage display vector pCSM21. Human BMP2A C-terminal peptide displayed on the surface of the phage can bind spec... Human bone morphogenetic protein 2A (hBMP2A) cDNA terminal 567 nucleotides were cloned and expressed in a phage display vector pCSM21. Human BMP2A C-terminal peptide displayed on the surface of the phage can bind specifically to the surface of mouse osteoblastic cell (MC3T3) membrane. ELISA assay showed a positive signal of the binding by using antibody against M13 phage gene 8 protein. After labeling with 3HTdR,the counts of the binding groups were 3 to 10 times higher than the control groups. It suggests that the surface of MC3T3 cells exist the receptor for hBMP2A. 展开更多
关键词 human bone morphogenetic protein 2A ELISA 3HTdR incorporation
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Construction of bicistronic green fluorescent protein labeled pSELECT GFPzeo human bone morphogenetic protein 2 eukaryotic expression vector
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作者 黄洪超 《外科研究与新技术》 2011年第2期91-91,共1页
Objective To construct green fluorescent protein (GFP)-labeled pSELECT-GFP zeohBMP2 eukaryotic expression vector.Methods The encoding fragment of hBMP2 gene was obtained from a recombinant plasmid pcDNA3.1/CT-hBMP2 by... Objective To construct green fluorescent protein (GFP)-labeled pSELECT-GFP zeohBMP2 eukaryotic expression vector.Methods The encoding fragment of hBMP2 gene was obtained from a recombinant plasmid pcDNA3.1/CT-hBMP2 by using polymerase 展开更多
关键词 PCR GFP Construction of bicistronic green fluorescent protein labeled pSELECT GFPzeo human bone morphogenetic protein 2 eukaryotic expression vector GENE
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Regulating the bioactivity of non-glycosylated recombinant human bone morphogenetic protein-2 to enhance bone regeneration
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作者 Yuanman Yu Rui Chen +2 位作者 Xinye Chen Jing Wang Changsheng Liu 《Bioactive Materials》 SCIE CSCD 2024年第8期169-180,共12页
Recombinant human bone morphogenetic protein-2(rhBMP-2)is the predominant growth factor that effectively induces osteogenic differentiation in orthopedic procedures.However,the bioactivity and stability of rhBMP-2 are... Recombinant human bone morphogenetic protein-2(rhBMP-2)is the predominant growth factor that effectively induces osteogenic differentiation in orthopedic procedures.However,the bioactivity and stability of rhBMP-2 are intrinsically associated with its sequence,structure,and storage conditions.In this study,we successfully determined the amino acid sequence and protein secondary structure model of non-glycosylated rhBMP-2 expressed by an E.coli expression system through X-ray crystal structure analysis.Furthermore,we observed that acidic storage conditions enhanced the proliferative and osteoinductive activity of rhBMP-2.Although the osteogenic activity of non-glycosylated rhBMP-2 is relatively weaker compared to glycosylated rhBMP-2;however,this discrepancy can be mitigated by incorporating exogenous chaperone molecules.Overall,such information is crucial for rationalizing the design of stabilization methods and enhancing the bioactivity of rhBMP-2,which may also be applicable to other growth factors. 展开更多
关键词 recombinant human bone morphogenetic protein-2 Osteogenic activity protein stability Sulfated polysaccharide
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Reconstruction of orbital defect in rabbits with composite of calcium phosphate cement and recombinant human bone morphogenetic protein-2 被引量:5
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作者 ZHENG Yong-xin WANG Jing LIN Hao-tian LI Ling 《Chinese Medical Journal》 SCIE CAS CSCD 2010年第24期3658-3662,共5页
Background Calcium phosphate cement (CPC) is a biocompatible and osteoconductive bone substitute, and recombinant human bone morphogenetic protein-2 (rhBMP-2) has strong osteoinductibility, therefore we developed ... Background Calcium phosphate cement (CPC) is a biocompatible and osteoconductive bone substitute, and recombinant human bone morphogenetic protein-2 (rhBMP-2) has strong osteoinductibility, therefore we developed a composite bone substitute with CPC and rhBMP-2 and evaluate its reconstruction effect in rabbit orbital defect.Methods Thirty-six rabbits were randomly divided into two groups and a 5 mmx5 mmx2 mm bone defect in the infraorbital rim was induced by surgery in each orbit (72 orbits in all). The orbital defects were treated with pure CPC or composite of CPC and rhBMP-2. The osteogenesis ability of different bone substitute was evaluated by gross observation, histological examination, histomorphometrical evaluation, compressive load-to-failure testing, and scanning electron microscope (SEM).Results Gross observation showed that both bone substitutes were safe and effective for reconstruction of orbital defect. However, histological examination, histomorphometrical evaluation and SEM showed that CPC/rhBMP-2 group had faster speed in new bone formation and degradation of substitute material than CPC group. Compressive load-to-failure testing showed that CPC/rhBMP-2 group had stronger compressive strength than CPC group at every stage with significant difference (P <0.05).Conclusion Composite of CPC/rhBMP-2 is an ideal bioactive material for repairing orbital defect, with good osteoconductibility and osteoinductibility. 展开更多
关键词 orbital defect calcium phosphate cement recombinant human bone morphogenetic protein-2
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The use of recombinant human bone morphogenetic protein-2 (rhBMP-2) in maxillofacial trauma 被引量:3
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作者 A.S. Herford 《Chinese Journal of Traumatology》 CAS CSCD 2017年第1期1-3,共3页
In recent years, recombinant human bone morphogenetic protein-2 (rhBMP-2) has been introduced as a therapeutic option in the treatment of several congenital and acquired craniofacial defects. Although there have bee... In recent years, recombinant human bone morphogenetic protein-2 (rhBMP-2) has been introduced as a therapeutic option in the treatment of several congenital and acquired craniofacial defects. Although there have been promising clinical results, the international literature still lacks complete guidelines, including limits and indications for the use of rhBMP-2. The possible indications for rhBMP-2 in patients undergoing facial trauma are discussed in this article. 展开更多
关键词 recombinant human bone morphogenetic protein-2 Maxillofacial trauma Clinical application
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含重组人碱性成纤维细胞生长因子和重组人骨形态发生蛋白-2骨水泥在骨质疏松性腰椎压缩性骨折治疗的应用价值 被引量:2
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作者 夏钰东 张荣 +1 位作者 刘琼 陈佳汝 《中国骨伤》 CAS CSCD 2024年第1期15-20,共6页
目的:探讨含重组人碱性成纤维细胞生长因子(recombinant human basic fibroblast growth factor,rhbFGF)和重组人骨形态发生蛋白-2(recombinant human bone morphogenetic protein-2,rhBMP-2)骨水泥在骨质疏松性腰椎压缩性骨折(osteopor... 目的:探讨含重组人碱性成纤维细胞生长因子(recombinant human basic fibroblast growth factor,rhbFGF)和重组人骨形态发生蛋白-2(recombinant human bone morphogenetic protein-2,rhBMP-2)骨水泥在骨质疏松性腰椎压缩性骨折(osteoporotic vertebral compression fracture,OVCF)患者经皮椎体后凸成形术(percutaneous kyphoplasty,PKP)治疗的应用价值。方法:回顾性分析2018年1月至2021年1月收治的103例行PKP手术治疗的OVCF患者,男40例,女63例;年龄61~78(65.72±3.29)岁。受伤原因:滑倒33例,跌倒42例,提重物受伤28例。根据填充骨水泥不同分为3组:磷酸钙组34例,男14例,女20例,年龄(65.1±3.3)岁,填充磷酸钙骨水泥;rhBMP-2组34例,男12例,女22例,年龄(64.8±3.2)岁,填充含rhBMP-2的骨水泥;rhbFGF+rhBMP-2组35例,男14例,女21例,年龄(65.1±3.6)岁,填充含rhbFGF和rhBMP-2的骨水泥。比较3组Oswestry功能障碍指数(Oswestry dysfunction index,ODI)、骨密度、椎体前缘丢失高度、伤椎前缘压缩率、疼痛视觉模拟评分(visual simulation score,VAS)及再骨折发生率。结果:所有患者获得12个月随访。3组术后ODI、VAS呈下降(P<0.001),骨密度增高(P<0.001),椎体前缘丢失高度、伤椎前缘压缩率呈先下降后缓慢上升趋势(P<0.001),rhbFGF+rhBMP-2组术后第1、6、12个月ODI、VAS均低于rhBMP-2组和磷酸钙组(P<0.05),术后第6、12个月骨密度大于rhBMP-2组和磷酸钙组(P<0.05)。rhbFGF+rhBMP-2组术后第6、12个月椎体前缘丢失高度、伤椎前缘压缩率均低于rhBMP-2组和磷酸钙组(P<0.05)。3组再骨折发生率比较差异无统计学意义(P>0.05)。结论:含rhbFGF和rhBMP-2骨水泥可更有效地增加OVCF患者骨密度,获得术后满意的临床和放射学效果,显著改善临床症状。 展开更多
关键词 经皮椎体后凸成形术 骨水泥 骨质疏松 腰椎 压缩性骨折 重组人碱性成纤维细胞生长因子 重组人类骨形态发生蛋白-2
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重组人骨形态发生蛋白-2用于骨壁缺损拔牙位点保存的效果
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作者 汤正婷 许滢洁 +1 位作者 杨德钊 孟凡文 《口腔医学研究》 CAS CSCD 北大核心 2024年第3期254-258,共5页
目的:评价重组人骨形态发生蛋白-2(recombinant bone morphogenetic proteinrh-2,rhBMP-2)用于骨壁缺损拔牙位点保存的临床效果。方法:2019年2月~2023年1月将符合条件的142例患者随机分组,A组使用rhBMP-2+胶原蛋白海绵填充拔牙窝,B组使... 目的:评价重组人骨形态发生蛋白-2(recombinant bone morphogenetic proteinrh-2,rhBMP-2)用于骨壁缺损拔牙位点保存的临床效果。方法:2019年2月~2023年1月将符合条件的142例患者随机分组,A组使用rhBMP-2+胶原蛋白海绵填充拔牙窝,B组使用胶原蛋白海绵,C组不使用移植物。于拔牙后18周、24周开展种植手术,并编为A1、A2;B1、B2;C1、C2组,种植术中发现有牙槽嵴顶骨缺损的病例测量牙槽嵴缺损的最大近远中径(L)、颊舌径(W)及深度(H),计算体积(V)值(V=L×W×H);无牙槽骨顶骨缺损的病例取种植窝骨块进行组织学分析。结果:A1、A2组牙槽嵴顶骨缺损的发生频率分别为:0.32、0.14;B1、B2组分别为:0.75、0.43;C1、C2组分别为:0.72、0.37。A1B1组间、A2B2组间、A1C1组间及A2C2组间V值差异有统计学意义(P<0.05)。A1B1组间及A1C1组间新生骨占比差异有统计学意义(P<0.05)。结论:rhBMP-2用于骨壁缺损的拔牙位点保存可缩短成骨时间(18周),减少不良愈合的发生,为后期种植手术的开展创造更有利的骨条件。 展开更多
关键词 拔牙位点保存 重组人骨形态发生蛋白-2 口腔种植
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Bone Regeneration Enhanced by Antigen-Extracted Xenogeneic Cancellous Bone Graft with rhBMP-2 in Rabbits Mandibular Defect Repair 被引量:3
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作者 Renfa Lai Zejian Li +1 位作者 Ye Zhang Zhiying Zhou 《Engineering(科研)》 2013年第10期108-113,共6页
The effects of large piece xenogeneic bone which was separated from healthy pigs as a scaffold on repair of mandibular defect was investigated and the applicability of antigen-extracted xenogeneic cancellous bone (AXC... The effects of large piece xenogeneic bone which was separated from healthy pigs as a scaffold on repair of mandibular defect was investigated and the applicability of antigen-extracted xenogeneic cancellous bone (AXCB) soaked with rhBMP-2 in bone defect repair was assessed. Mandibular defects were created in 48 New Zealand Rabbits, and then randomly divided into 4 groups, which was grafted in the mandibular defects with AXCB, AXCB soaked with rhBMP-2, autograft bone, or blank. Equal number of animals from each group was classified into three time points (4, 8, and 12 weeks) after operation for gross pathological observation, hematoxylin and eosin (H & E) staining, radiographic examination, and bone density measurement. H & E staining revealed that the area percentage of bone regeneration in the group of AXCB/rhBMP-2 graft was 27.72 ± 4.68, 53.90 ± 21.92, and 77.35 ± 9.83 when at 4, 8, and 12 weeks, which was better than that of auto bone graft, prompting that the group of AXCB/rhBMP-2 graft had commendable osteogenic effect. And comparing with the AXCB without rhBMP-2, of which the area percentage of bone regeneration was only 14.03 ± 5.02, 28.49 ± 11.35, and 53.90 ± 21.92, the osteogenic effect of AXCB/rhBMP-2 graft was demonstrated to be much better. In the group of AXCB/rhBMP-2 graft, the area percentage of bone regeneration increased, and the implanted materials were gradually degraded and replaced by autogenous bone regeneration over time. We concluded that antigen-extracted xenogeneic cancellous bone (AXCB) graft soaked with rhBMP-2 had shown excellent osteogenic effect in repair of bone defects, with good biocompability. 展开更多
关键词 recombinant human bone morphogenetic protein-2(rhBMP-2) Antigen-Extracted Xenogeneic CANCELLOUS bone (AXCB) DEFECT Repair bone Regeneration Mandible DEFECT
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负载骨形态发生蛋白2水凝胶诱导牙髓干细胞的成骨分化
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作者 伊斯拉尔古丽·麦麦提 贾森 刘佳 《中国组织工程研究》 CAS 北大核心 2025年第16期3301-3310,共10页
背景:前期研究证明,甲基丙烯酸酐改性明胶/经处理牙本质基质复合水凝胶支架可促进人牙髓干细胞的增殖及分化。水凝胶负载骨形态发生蛋白2被认为是骨修复中有前景的材料。目的:观察负载不同质量浓度骨形态发生蛋白2的甲基丙烯酸酐改性明... 背景:前期研究证明,甲基丙烯酸酐改性明胶/经处理牙本质基质复合水凝胶支架可促进人牙髓干细胞的增殖及分化。水凝胶负载骨形态发生蛋白2被认为是骨修复中有前景的材料。目的:观察负载不同质量浓度骨形态发生蛋白2的甲基丙烯酸酐改性明胶/经处理牙本质基质复合水凝胶对人牙髓干细胞成骨向分化的诱导作用。方法:制备含0,50,100,200μg/mL骨形态发生蛋白2的甲基丙烯酸酐改性明胶/经处理牙本质基质复合水凝胶,分别记为GelMA/TDM、BMP-2(50 ng/mL)GelMA/TDM、BMP-2(100 ng/mL)GelMA/TDM、BMP-2(200 ng/mL)GelMA/TDM,检测复合水凝胶对骨形态发生蛋白2的体外缓释性能。采用改良组织块酶消化法提取人牙髓干细胞,分别接种于4种水凝胶表面,采用CCK-8法检测细胞增殖,DAPI染色检测细胞黏附;对各组水凝胶表面的人牙髓干细胞进行成骨诱导,进行碱性磷酸酶染色、碱性磷酸酶活性检测与茜素红染色,采用RT-PCR法检测相关成骨基因(Runx2、骨形态发生蛋白2、骨桥蛋白、骨钙素、Ⅰ型胶原)表达。结果与结论:①甲基丙烯酸酐改性明胶/经处理牙本质基质复合水凝胶可持续释放骨形态发生蛋白2长达21 d,在第3-6天释放较快,第6天之后释放趋于平稳;②4种水凝胶均可促进人牙髓干细胞的增殖,其中以BMP-2(100 ng/mL)-GelMA/TDM复合水凝胶的作用最明显;相较于GelMA/TDM复合水凝胶,BMP-2-GelMA/TDM复合水凝胶可促进人牙髓干细胞的黏附,其中以BMP-2(200 ng/mL)-GelMA/TDM复合水凝胶的作用最明显;③相较于GelMA/TDM复合水凝胶,BMP-2-GelMA/TDM复合水凝胶可提升碱性磷酸酶活性、钙结节含量与相关成骨基因表达,综合分析显示BMP-2(100 ng/mL)-GelMA/TDM复合水凝胶的作用更明显;④结果表明,BMP-2(100 ng/mL)-GelMA/TDM复合水凝胶促进牙髓干细胞成骨向分化的能力更明显。 展开更多
关键词 人牙髓干细胞 骨形态形成蛋白2 细胞增殖 细胞分化 组织工程 牙髓-牙本质再生
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Therapeutic effects of human umbilical cord-derived mesenchymal stem cells against acute tubular necrosis quantified through measures of iNOS, BMP-7 and Bcl-2
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作者 Fang Li Feng Xiong +6 位作者 Yun Zhang Yuying Li Hongmei Zhao S. Charles Cho Thomas E. Ichim Xiaofei Yang Xiang Hu 《Open Journal of Regenerative Medicine》 2013年第2期31-38,共8页
Introduction: Acute tubular necrosis (ATN) is the most prevalent cause of acute renal failure (ARF). Mesenchymal stem cell transplantation has been studied as a potential treatment for renal dysfunction due to ATN. In... Introduction: Acute tubular necrosis (ATN) is the most prevalent cause of acute renal failure (ARF). Mesenchymal stem cell transplantation has been studied as a potential treatment for renal dysfunction due to ATN. Inducible nitric oxide synthase (iNOS), bone morphogenetic protein-7 (BMP-7) and B-cell lymphoma 2 (Bcl-2) are surrogate markers of renal tubular epithelial regeneration and subsequent recovery of renal function following ATN. Methods: Serum creatinine (Scr) and blood urea nitrogen (BUN), as well as expression of iNOS, BMP-7 and Bcl-2 in gentamycin-induced ATN rat kidneys was investigated after human umbilical cord-derived mesenchymal stem cell (HUC-MSC) transplantation. Immunohistochemical staining was performed in 3 groups of rats: gentamycin-induced ATN treated with HUC-MSC, gentamycin-induced ATN without HUC-MSC, and untreated rats not receiving any treatments. Results: HUC-MSC transplantation led to a reduction in Scr and BUN in the kidneys of rats with gentamycin-induced ATN. Expression of iNOS in the HUC-MSC treated group occurred later and the expression levels were much lower during gentamycin-induced ATN compared to rats with ATN that were not treated with HUC-MSC. The expression of BMP-7 and Bcl-2 in the MSC-transplanted group was significantly increased compared to both control groups of rats with injured and healthy renal tubules. Conclusions: HUC-MSCs induce renal protection in a rat model of gentamycin-induced ATN, which is associated with reduced iNOS expression and up-regulation of Bcl-2 and BMP-7. 展开更多
关键词 Acute Tubular Necrosis (ATN) human Umbilical Cord-Derived Mesenchymal STEM CELL (HUC-MSC) STEM CELL Transplantation Inducible Nitric Oxide Synthase (INOS) bone morphogenetic protein-7 (BMP-7) B-Cell Lymphoma 2 (Bcl-2)
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复合基因重组人骨形成蛋白-2异种骨的研制及成骨活性研究 被引量:6
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作者 袁志 马平 +4 位作者 胡蕴玉 赵广跃 吕荣 孙梁 李丹 《中国修复重建外科杂志》 CAS CSCD 2002年第2期79-82,共4页
目的 研制新型具有诱导成骨活性的异种骨植骨材料。方法 在重组合异种骨 (RBX)基础上 ,以基因重组人骨形成蛋白 - 2 (rh BMP- 2 )取代从牛皮质骨中提取的牛 BMP,与去抗原牛松质骨载体 (BCB)复合 ,制成复合 rh BMP- 2的异种骨 (rh BMP-... 目的 研制新型具有诱导成骨活性的异种骨植骨材料。方法 在重组合异种骨 (RBX)基础上 ,以基因重组人骨形成蛋白 - 2 (rh BMP- 2 )取代从牛皮质骨中提取的牛 BMP,与去抗原牛松质骨载体 (BCB)复合 ,制成复合 rh BMP- 2的异种骨 (rh BMP- 2 / BCB) ;将 4周龄雄性 BAL B/ C小鼠 6 0只 ,随机分为实验组和对照组 ,于实验组小鼠左股部肌袋植入 rh BMP- 2 / BCB骨粒 ,对照组小鼠左股部肌袋植入 BCB骨粒 ,术后 7、14及 2 1天取材 ,通过组织学、骨计量学方法检测 rh BMP- 2 / BCB的诱导成骨活性。结果  1实验组术后 7天在小鼠肌袋可诱导软骨生成 ,14天形成编织骨 ,2 1天改建成板层骨并形成大量骨髓 ;对照组于术后各时间点均未见有软骨及骨形成。 2实验组的碱性磷酸酶活性和钙含量均高于对照组 ,具有统计学意义 (P<0 .0 1)。结论  rh BMP- 2 / BCB具有较好的骨诱导能力 。 展开更多
关键词 基因重组人骨形成蛋白-2 异种骨植骨 骨诱导 骨修复材料 成骨活性 骨节段性缺损
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三种钙磷陶瓷材料复合重组人骨形成蛋白-2体内成骨的研究 被引量:9
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作者 龙厚清 李佛保 +2 位作者 王迎军 廖威明 王会信 《中国修复重建外科杂志》 CAS CSCD 2003年第3期180-184,共5页
目的 探讨和比较 3种钙磷陶瓷材料 HA、TCP、HA/ TCP复合重组人骨形成蛋白 - 2 (rh BMP- 2 )体内异位成骨效果 ,为临床应用提供依据。 方法 取 35只 3月龄 Wistar大鼠 ,将复合 rh BMP- 2的 3种钙磷陶瓷材料 (1∶ 1)植于鼠背部肌袋内 ... 目的 探讨和比较 3种钙磷陶瓷材料 HA、TCP、HA/ TCP复合重组人骨形成蛋白 - 2 (rh BMP- 2 )体内异位成骨效果 ,为临床应用提供依据。 方法 取 35只 3月龄 Wistar大鼠 ,将复合 rh BMP- 2的 3种钙磷陶瓷材料 (1∶ 1)植于鼠背部肌袋内 ,未复合 rh BMP- 2的上述 3种单纯陶瓷材料为对照组。术后 2、4和 8周取材 ,测定植入物碱性磷酸酶 (AL P)活性 ,通过 HE染色和计算机图像分析进行组织学和组织计量学观察 ,比较新生骨组织的形成。 结果 术后 2、4周复合植入物 AL P活性测定从高到低依次为 HA、HA/ TCP、TCP,但在相同 rh BMP- 2剂量下 ,其差异无统计学意义 (P>0 .0 5 ) ,与相对应单纯支架材料比较有统计学意义 (P<0 .0 5 ) ;组织学和组织计量学检测结果显示各复合材料组均有新骨形成 ,成骨量随时间推移而增加 ,2周时以 HA/ rh BMP- 2成骨量较多 ,但 3组间差异无统计学意义(P>0 .0 5 ) ;8周时新骨形成以双相陶瓷 HA/ TCP最佳 ,相关参数和图像分析有统计学意义 (P<0 .0 5 ) ,成骨量 8周较 2、4周多 ,有统计学意义 (P<0 .0 1) ;3种单纯支架材料各观察期均无骨样组织形成。 结论 双相陶瓷材料 HA/ TCP是携带 rh BMP- 2的钙磷陶瓷良好支架材料。 展开更多
关键词 钙磷陶瓷材料 复合重组人骨形成蛋白-2 体内成骨 羟基磷灰石 磷酸三钙 双相钙磅陶瓷
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携载rhBMP-2微球的新型可注射自凝固复合人工骨的制备及特性研究 被引量:14
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作者 费正奇 胡蕴玉 +3 位作者 吴道澄 吴红 白建萍 蒲勤 《中国矫形外科杂志》 CAS CSCD 北大核心 2006年第2期124-127,138,共5页
[目的]制备一种具有良好降解性和成骨活性、可注射的自凝固新型骨修复材料。[方法]制备携载rh-BMP-2的聚乳酸与聚乙醇酸共聚物(PLGA)微球,并将其与rhBMP-2/磷酸钙骨水泥(CPC)复合,制备出rhBMP-2/PLGA微球/CPC复合人工骨。探讨了材料的特... [目的]制备一种具有良好降解性和成骨活性、可注射的自凝固新型骨修复材料。[方法]制备携载rh-BMP-2的聚乳酸与聚乙醇酸共聚物(PLGA)微球,并将其与rhBMP-2/磷酸钙骨水泥(CPC)复合,制备出rhBMP-2/PLGA微球/CPC复合人工骨。探讨了材料的特性,包括形貌、固化时间、抗压强度及反映材料体外降解速度的指标—体外降解液Ca、P浓度变化,测定复合材料rhBMP-2的释药速度及体外诱导MSCs细胞成骨分化的能力。[结果]与单纯CPC-rhBMP-2相比,复合材料的固化时间少量增加,抗压强度下降明显。体外降解速度及体外释药明显提高,释放的rhBMP-2具有骨诱导活性。[结论]rhBMP-2/PLGA微球/磷酸钙骨水泥新型复合人工骨是具有良好应用前景的骨修复材料。 展开更多
关键词 聚乳酸与聚乙醇酸共聚物 微球 磷酸钙骨水泥 重组人骨形态蛋白-2 骨替代物
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