Single-Cell Sequencing Reveals Cellular Heterogeneity

课文

1. Even within one organ, no two human cells are genetically or functionally identical—single-cell sequencing proves this.

   即使在同一器官内，也没有两个人体细胞在基因或功能上完全相同——单细胞测序证实了这一点。

2. Scientists isolate individual cells first, then read their full RNA profiles instead of averaging across thousands.

   科学家首先分离单个细胞，再读取其完整的RNA谱，而非对成千上万个细胞取平均值。

3. This method uncovered rare immune cells that trigger severe asthma attacks but stay invisible in bulk tests.

   该方法发现了罕见的免疫细胞，它们会引发重度哮喘发作，却在常规批量检测中无法被发现。

4. Tumors once thought uniform now show distinct subpopulations—one resistant to chemo, another prone to spread.

   过去被认为均质的肿瘤，如今显示出截然不同的亚群：一类耐化疗，另一类易转移。

5. Doctors use these maps to design therapies targeting only dangerous cell types, sparing healthy ones.

   医生利用这些细胞图谱设计靶向疗法，只攻击危险细胞类型，保护健康细胞。

6. In aging brains, the technique revealed why some neurons decline early while neighbors remain active for decades.

   在衰老大脑中，该技术揭示了为何某些神经元早早衰退，而邻近神经元却能保持活跃数十年。

7. It also explains why identical twins may develop different diseases despite near-identical DNA.

   它也解释了为何同卵双胞胎尽管DNA几乎完全相同，却可能患上不同疾病。

8. By treating each cell as a unique data point, biologists move beyond population averages to true biological nuance.

   通过将每个细胞视为独立数据点，生物学家得以超越群体平均值，捕捉真实的生物学细微差异。