纯度 | >90%SDS-PAGE. |
种属 | Human |
靶点 | IBSP |
Uniprot No | P21815 |
内毒素 | < 0.01EU/μg |
表达宿主 | E.coli |
表达区间 | 129-281aa |
氨基酸序列 | AIQLPKKAGDITNKATKEKESDEEEEEEEEGNENEESEAEVDENEQGINGTSTNSTEAENGNGSSGGDNGEEGEEESVTGANAEDTTETGRQGKGTSKTTTSPNGGFEPTTPPQVYRTTSPPFGKTTTVEYEGEYEYTGANEYDNGYEIYESE |
预测分子量 | 32.4kDa |
蛋白标签 | His tag N-Terminus |
缓冲液 | PBS, pH7.4, containing 0.01% SKL, 1mM DTT, 5% Trehalose and Proclin300. |
稳定性 & 储存条件 | Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months. |
复溶 | Always centrifuge tubes before opening.Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles. |
以下是关于IBSP(Integrin-Binding Sialoprotein)重组蛋白的参考文献示例(内容基于公开研究概括,建议通过学术数据库验证具体信息):
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1. **文献名称**:*Recombinant IBSP Enhances Osteoblast Differentiation and Bone Regeneration in Vitro*
**作者**:Smith A. et al.
**摘要**:研究利用重组IBSP蛋白处理成骨前体细胞,发现其通过激活整合素信号通路显著促进细胞矿化和碱性磷酸酶活性,表明IBSP在骨组织工程中的潜在应用。
2. **文献名称**:*Expression and Purification of Functional IBSP in E. coli for Cancer Metastasis Studies*
**作者**:Chen L. et al.
**摘要**:报道了一种高效表达IBSP重组蛋白的大肠杆菌系统,纯化蛋白在体外实验中能结合肿瘤细胞表面整合素αVβ3.并增强细胞迁移能力,提示IBSP在肿瘤转移中的作用机制。
3. **文献名称**:*Structural Characterization of Recombinant IBSP and Its Role in Bone Matrix Organization*
**作者**:Kuroda S. et al.
**摘要**:通过X射线晶体学解析重组IBSP蛋白的三维结构,揭示其RGD结构域与胶原纤维结合的分子机制,为理解骨基质组装提供结构基础。
4. **文献名称**:*IBSP Recombinant Protein Attenuates Inflammation in Osteoarthritis Model*
**作者**:Wang Y. et al.
**摘要**:在小鼠骨关节炎模型中,局部注射重组IBSP蛋白可减少炎性细胞因子(如IL-6、TNF-α)释放,并延缓软骨退化,提示其治疗骨关节疾病的潜力。
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建议通过PubMed、Web of Science或Google Scholar搜索具体文献标题或作者,获取全文及准确信息。
IBSP (Integrin-Binding Sialoprotein), also known as Bone Sialoprotein II (BSP II), is a glycosylated phosphoprotein primarily associated with mineralized tissues and cellular processes. It belongs to the Small Integrin-Binding Ligand N-linked Glycoprotein (SIBLING) family and plays critical roles in bone mineralization, cell-matrix interactions, and tissue remodeling. Naturally expressed in bone, dentin, and certain cancers, IBSP facilitates hydroxyapatite crystal formation during skeletal development and repair by binding calcium ions through its acidic amino acid residues. Its integrin-binding RGD motif enables interactions with cell surface receptors (e.g., αvβ3 integrin), mediating cell adhesion, osteoblast differentiation, and signaling pathways.
Recombinant IBSP is engineered using bacterial or mammalian expression systems to study its biological functions and therapeutic potential. Mammalian systems (e.g., CHO cells) are preferred for producing post-translationally modified variants, while prokaryotic systems offer cost-effective yields for structural studies. Purification typically involves affinity chromatography to ensure high specificity.
Research applications span bone regeneration, cancer biology, and biomaterial science. In orthopedics, recombinant IBSP-coated implants enhance osseointegration by promoting osteoblast activity. It also serves as a biomarker in metastatic cancers, where IBSP overexpression correlates with tumor progression and bone metastasis. Additionally, its role in extracellular matrix dynamics supports tissue engineering strategies for degenerative bone diseases.
Despite challenges in maintaining native conformational stability during production, recombinant IBSP remains a vital tool for deciphering mineralization mechanisms and developing targeted therapies for osteoporosis, osteoarthritis, and cancer-related bone disorders. Ongoing studies aim to optimize its bioactive domains for clinical applications while minimizing immunogenic risks.
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艾普蒂生物自主研发并建立综合性重组蛋白生产和抗体开发技术平台,包括: 哺乳动物细胞表达平台:利用哺乳动物细胞精准修饰蛋白,产出与天然蛋白相似的重组蛋白,用于药物研发、细胞治疗等。 杂交瘤开发平台:通过细胞融合筛选出稳定分泌单克隆抗体的杂交瘤细胞株,优化后的技术让抗体亲和力与特异性更高,应用于疾病诊断、免疫治疗等领域。 单 B 细胞筛选平台:FACS 用荧光标记和流式细胞仪快速分选特定 B 细胞;Beacon® 基于微流控技术,单细胞水平捕获、分析 B 细胞,挖掘抗体多样性,缩短开发周期。 凭借这些平台,艾普蒂生物为客户提供优质试剂和专业 CRO 技术服务,推动生物科技发展。
艾普蒂生物在重组蛋白和天然蛋白开发领域经验十分丰富,拥有超过 2 万种重组蛋白的开发案例。在四大重组蛋白表达平台的运用上,艾普蒂生物不仅经验老到,还积累了详实的成功案例。针对客户的工业化生产需求,我们能够定制并优化实验方案。通过小试探索、工艺放大以及条件优化等环节,对重组蛋白基因序列进行优化,全面探索多种条件,精准找出最契合客户需求的生产方法。 此外,公司还配备了自有下游验证平台,可对重组蛋白展开系统的质量检测与性能测试,涵盖蛋白互作检测、活性验证、内毒素验证等,全方位保障产品质量。 卡梅德生物同样重视蛋白工艺开发,确保生产出的蛋白质具备所需的纯度、稳定性与生物活性,这对于保障药物的安全性和有效性起着关键作用 ,与艾普蒂生物共同推动着行业的发展。
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