Iscience:首次绘制出完整的人类牙齿单细胞图谱

2021-04-30 Viho MedSci原创

牙髓和牙周组织中存在巨大的细胞异质性,并且发现干细胞群体的分子特征非常相似。

scitechdaily

牙齿发挥着与咀嚼和说话有关的基本功能。尽管它们在生物医学上非常重要,但它们的细胞和分子组成的总体情况仍然缺失。

在过去的30年里,医学和牙科研究吸引了大量的科学家和从业人员,他们致力于遗传和组织再生方法相结合的高医学相关性工作。干细胞和组织工程为医学和牙科研究人员提供了新的见解,并就如何改进日常的临床实践提出了新的想法。

近日,苏黎世大学的研究人员发表在Iscience上的研究绘制了构成人类牙齿的第一个完整的单细胞图谱,研究揭示人类牙髓和牙周组织的组成变化差异巨大,他们的发现也为基于细胞的牙科治疗方法开辟了新的途径

研究人员首先分析了人类牙齿牙髓的细胞和分子组成。从提取的第三磨牙中分离出牙髓,将其分解成单细胞悬液,然后进行基于液滴的包封和测序。分析共产生了32378个牙髓细胞。

成人健康人类牙髓的单细胞RNA测序分析

随着进一步研究,研究人员着手确定和表征组成人类牙齿牙周的细胞群。通过刮除第三磨牙根的三分之二表面获得了牙周组织。随后将分离的牙周组织分离为单细胞悬液,并对其进行了单细胞RNA测序处理。我们获得了总共2883个牙周细胞,并鉴定出15个细胞簇。

 

牙周单细胞RNA测序分析

研究发现,牙髓和牙周组织中存在巨大的细胞异质性,并且发现干细胞群体的分子特征非常相似。研究表明,牙髓和牙周组织都含有具有很大再生潜力的干细胞。

该研究对牙髓和牙周这两种组织的组成提供了前所未有的理解,这两种组织与龋病、牙周炎等和细菌相关的牙齿疾病有关。

该研究作者黎世联邦理工学院生物系统科学与工程系Pierfrancesco Pagella教授指出,特异性可能是由独特微环境造成的。

 总之,该研究进展为牙齿疾病的治疗提供新方向,为修复牙齿受损部位以及牙齿相关疾病提供更精确的诊断工具,是生物信息学与现代牙科技术融合的结果。

 原始出处: 

Pierfrancesco Pagella et al. A single-cell atlas of human teeth, iScience (2021). DOI: 10.1016/j.isci.2021.102405

 

 

 

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    2021-05-02 jichang
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    2021-05-02 zhouqu_8
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    2021-05-02 yankaienglish

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拓展阅读

Sci Adv:熊海清/何爱彬团队开发超高通量单细胞表观遗传联合分析方法,同时检测5种组蛋白修饰

研究团队开发了名为uCoTarget的技术,利用split & pool条形码策略实现了多个表观修饰蛋白的超高通量单细胞联合分析。

Nat Commun:单细胞空间代谢组学分析框架scSpaMet,可对同一组织进行空间分辨蛋白质和代谢物分析

文章提出了单细胞空间分辨代谢框架“scSpaMet”,通过将非靶向空间代谢组学和靶向多重蛋白质成像整合到单一管道中,在单细胞水平上分析人体组织中的免疫细胞和癌症细胞。

BMC Genomics:基于单细胞和微阵列转录组整合分析的肺动脉高压患者枢纽基因的鉴定

深入了解PAH的分子机制至关重要,特别是在单细胞水平上的解析,以揭示潜在的治疗靶点和新的治疗策略。

Genome Biology:王岱峰团队发表跨模态最优传输方法CMOT,可准确预测单细胞的多模态特征

研究发现,在脑发育、癌症及免疫学等各种应用中,CMOT比现有方法更优秀,并提供改进细胞分类或癌症分类的生物学解释。

Cell Discovery:CD36+癌相关成纤维细胞通过分泌巨噬细胞迁移抑制因子为肝细胞癌提供免疫抑制微环境

CD36抑制剂通过恢复HCC中的抗肿瘤T细胞反应与抗PD-1免疫疗法协同作用。总之,该研究强调了阐明特定CAF亚群功能在理解肿瘤微环境和免疫系统之间相互作用的重要性。

肿瘤免疫前沿中的新技术

免疫组学很可能在未来的肿瘤免疫学领域占据主导地位