纯度 | >90%SDS-PAGE. |
种属 | Human |
靶点 | MIg |
Uniprot No | P83881 |
内毒素 | < 0.01EU/μg |
表达宿主 | E.coli |
表达区间 | 1-106aa |
氨基酸序列 | MVNVPKTRRT FCKKCGKHQP HKVTQYKKGK DSLYAQGKRR YDRKQSGYGG QTKPIFRKKA KTTKKIVLRL ECVEPNCRSK RMLAIKRCKH FELGGDKKRK GQVIQF |
预测分子量 | 12,4 kDa |
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MIg(膜免疫球蛋白)重组蛋白的3篇模拟参考文献,涵盖结构、表达及应用方向:
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1. **文献名称**:*Expression and Functional Analysis of Recombinant Membrane Immunoglobulin in B Cell Signaling*
**作者**:Smith, J., et al.
**摘要**:该研究通过哺乳动物细胞系统成功表达重组MIg蛋白,并验证其作为B细胞受体(BCR)的信号传导功能,证实重组MIg可激活下游酪氨酸激酶通路,为研究BCR相关疾病提供工具。
2. **文献名称**:*Engineering scFv-Based Recombinant MIg Mimetics for Targeted Therapy*
**作者**:Chen, L., & Wang, H.
**摘要**:作者设计了一种基于单链抗体(scFv)的重组MIg模拟蛋白,能够特异性结合肿瘤抗原。体外实验显示其可诱导癌细胞凋亡,为开发新型靶向免疫疗法奠定基础。
3. **文献名称**:*Cryo-EM Structure Determination of Recombinant MIg Complexes*
**作者**:Kumar, R., et al.
**摘要**:利用冷冻电镜技术解析了重组MIg与抗原结合的高分辨率三维结构,揭示了其跨膜区与胞内信号分子的相互作用机制,为优化重组MIg的稳定性提供结构依据。
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**注**:以上文献为模拟示例,实际研究中建议通过PubMed、Google Scholar等平台检索最新论文。若需具体领域文献,可提供更详细的关键词或研究方向。
**Background of Recombinant MIg Proteins**
Recombinant proteins, including monoclonal immunoglobulins (MIg), are engineered through genetic modification to mimic natural proteins, offering precise control over structure and function. The development of recombinant MIg traces back to advancements in molecular biology in the late 20th century, particularly the advent of recombinant DNA technology. This innovation enabled the insertion of immunoglobulin genes into expression systems like bacteria, yeast, or mammalian cells, bypassing traditional hybridoma methods and improving scalability, consistency, and customization.
MIg proteins typically consist of antibody fragments (e.g., Fab, scFv) or full-length immunoglobulins designed for therapeutic, diagnostic, or research applications. Their engineering allows for tailored antigen-binding sites, reduced immunogenicity (e.g., humanized or chimeric designs), and enhanced functional properties (e.g., increased stability or binding affinity). For example, therapeutic MIgs are pivotal in oncology, autoimmune diseases, and infectious diseases, targeting specific biomarkers with high precision.
The production process involves cloning antibody genes into expression vectors, transfecting host cells, and purifying the expressed proteins. Mammalian systems (e.g., CHO cells) are preferred for post-translational modifications, ensuring proper folding and glycosylation. Recent innovations, such as CRISPR-based editing and transient expression systems, have accelerated development cycles and improved yields.
Recombinant MIgs also address limitations of conventional antibodies, such as batch-to-batch variability and ethical concerns in animal-derived production. They underpin cutting-edge therapies like bispecific antibodies and antibody-drug conjugates (ADCs), expanding treatment modalities. Additionally, diagnostic applications leverage their specificity in assays like ELISA or flow cytometry.
Current research focuses on optimizing expression platforms, enhancing pharmacokinetics, and exploring novel formats (e.g., nanobodies). As personalized medicine grows, recombinant MIgs represent a cornerstone of targeted therapies, driving innovation in biologics and precision healthcare.
在生物科技领域,蛋白研发与生产是前沿探索的关键支撑。艾普蒂作为行业内的创新者,凭借自身卓越的研发实力,每年能成功研发 1000 多种全新蛋白,在重组蛋白领域不断突破。 在重组蛋白生产过程中,艾普蒂积累了丰富且成熟的经验。从结构复杂的跨膜蛋白,到具有特定催化功能的酶、参与信号传导的激酶,再到用于免疫研究的病毒抗原,艾普蒂都能实现高效且稳定的生产。 这一成就离不开艾普蒂强大的技术平台。我们构建了多元化的重组蛋白表达系统,昆虫细胞、哺乳动物细胞以及原核蛋白表达系统协同运作。不同的表达系统各有优势,能够满足不同客户对重组蛋白的活性、产量、成本等多样化的需求,从而提供高品质、低成本的活性重组蛋白。 艾普蒂提供的不只是产品,更是从源头到终端的一站式解决方案。从最初的基因合成,精准地构建出符合要求的基因序列,到载体构建,为蛋白表达创造适宜的环境,再到蛋白质表达和纯化,每一个环节都严格把控。我们充分尊重客户的个性化需求,在表达 / 纯化标签的选择、表达宿主的确定等方面,为客户量身定制专属方案。 同时,艾普蒂还配备了多种纯化体系,能够应对不同特性蛋白的纯化需求。这种灵活性和专业性,极大地提高了蛋白表达和纯化的成功率,让客户的研究项目得以顺利推进,在生物科技的探索道路上助力每一位科研工作者迈向成功。
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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