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相关概念视频

Pleiotropy01:33

Pleiotropy

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Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
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The Concept of Multiple Allelism
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Ribosome Profiling02:24

Ribosome Profiling

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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
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相关实验视频

Updated: Jan 8, 2026

Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay EMSA and DNA-affinity Precipitation Assay DAPA
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Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay EMSA and DNA-affinity Precipitation Assay DAPA

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在多器官成像特征上绘制罕见的蛋白质编码变体的映射.

Yijun Fan1, Jie Chen2, Zirui Fan3

  • 1Department of Statistics, University of Chicago, Chicago, IL, USA.

Nature communications
|December 23, 2025
PubMed
概括

这项研究探讨了罕见的遗传变异及其对人体器官结构和功能的影响,使用了超过5万个人的磁共振成像 (MRI) 数据. 研究人员确定了重要的基因特征关联,提高了我们对器官形态和疾病联系的理解.

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科学领域:

  • 遗传学 遗传学 是一个
  • 医疗成像医学成像
  • 人体生理学 人体生理学

背景情况:

  • 人体器官的结构和功能是临床结果的关键指标.
  • 全基因组关联研究 (GWAS) 从磁共振成像 (MRI) 中将常见的遗传变异与大脑和身体表型联系起来.
  • 罕见的蛋白质编码变异对器官大小和功能的影响仍然在很大程度上未被探索.

研究的目的:

  • 进行一个全外体关联研究 (EWAS),调查跨多个器官系统的罕见遗传变异.
  • 在大型队列中评估596个多器官MRI特征,以发现新的遗传关联.
  • 了解罕见的编码变异在人类器官形态和功能中的作用.

主要方法:

  • 在596个多器官MRI特征上进行了对外体范围的关联研究.
  • 分析了英国生物银行中超过5万个人的数据.
  • 利用单元负担模型和AlphaMissense注释来识别基因特征对.

主要成果:

  • 在各种MRI模式中确定了107个变异级别和224个基因相关性.
  • 发现了特定的关联,包括PTEN与大脑总体积,TTN与心脏功能,TNFRSF13B与脏体积.
  • 使用单元负担模型和AlphaMissense发现了8种独特的基因特征对,包括KCNA5和大脑活动之间的联系.

结论:

  • 罕见的编码变体有助于理解对人类器官形态和功能的遗传影响.
  • 这些发现突出了不同器官的共同遗传影响,并优先考虑了之前GWAS识别的基因位点.
  • 该研究确定了许多药物点,并提供了对复杂疾病遗传基础的洞察.