Marklein Ross A, Lo Surdo Jessica L, Bellayr Ian H, Godil Saniya A, Puri Raj K, Bauer Steven R
Cellular and Tissue Therapies Branch, Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland, USA.
Stem Cells. 2016 Apr;34(4):935-47. doi: 10.1002/stem.2322. Epub 2016 Feb 29.
Human bone marrow-derived multipotent mesenchymal stromal cells, often referred to as mesenchymal stem cells (MSCs), represent an attractive cell source for many regenerative medicine applications due to their potential for multi-lineage differentiation, immunomodulation, and paracrine factor secretion. A major complication for current MSC-based therapies is the lack of well-defined characterization methods that can robustly predict how they will perform in a particular in vitro or in vivo setting. Significant advances have been made with identifying molecular markers of MSC quality and potency using multivariate genomic and proteomic approaches, and more recently with advanced techniques incorporating high content imaging to assess high-dimensional single cell morphological data. We sought to expand upon current methods of high dimensional morphological analysis by investigating whether short term cell and nuclear morphological profiles of MSCs from multiple donors (at multiple passages) correlated with long term mineralization upon osteogenic induction. Using the combined power of automated high content imaging followed by automated image analysis, we demonstrated that MSC morphology after 3 days was highly correlated with 35 day mineralization and comparable to other methods of MSC osteogenesis assessment (such as alkaline phosphatase activity). We then expanded on this initial morphological characterization and identified morphological features that were highly predictive of mineralization capacities (>90% accuracy) of MSCs from additional donors and different manufacturing techniques using linear discriminant analysis. Together, this work thoroughly demonstrates the predictive power of MSC morphology for mineralization capacity and motivates further studies into MSC morphology as a predictive marker for additional in vitro and in vivo responses.
人骨髓来源的多能间充质基质细胞,通常被称为间充质干细胞(MSCs),由于其具有多谱系分化、免疫调节和旁分泌因子分泌的潜力,是许多再生医学应用中颇具吸引力的细胞来源。当前基于MSCs的疗法的一个主要并发症是缺乏明确的表征方法,无法可靠地预测它们在特定体外或体内环境中的表现。在使用多变量基因组和蛋白质组学方法识别MSCs质量和效力的分子标志物方面已经取得了重大进展,最近还采用了结合高内涵成像的先进技术来评估高维单细胞形态数据。我们试图通过研究来自多个供体(在多个传代阶段)的MSCs的短期细胞和细胞核形态特征是否与成骨诱导后的长期矿化相关,来扩展当前的高维形态分析方法。利用自动高内涵成像和自动图像分析的联合力量,我们证明3天时的MSCs形态与35天的矿化高度相关,并且与其他评估MSCs成骨的方法(如碱性磷酸酶活性)相当。然后,我们在此初始形态表征的基础上进行扩展,使用线性判别分析确定了对来自其他供体和不同制造技术的MSCs的矿化能力具有高度预测性的形态特征(准确率>90%)。总之,这项工作充分证明了MSCs形态对矿化能力的预测能力,并促使进一步研究将MSCs形态作为其他体外和体内反应的预测标志物。
Biochem Biophys Res Commun. 2014-4-18
Int J Artif Organs. 2011-10
Stem Cell Res Ther. 2025-6-7
Front Bioeng Biotechnol. 2023-10-31
Tissue Eng Regen Med. 2023-12