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FOXO3 is one of the most important genes associated with human longevity. It belongs to a family of genes that produce transcription factors, proteins that regulate how other genes are expressed. In simple terms, FOXO3 acts like a cellular “commander,” helping cells respond to stress and maintain stability over time.
One of the key functions of FOXO3 is to protect cells from damage. It plays a major role in reducing oxidative stress by activating antioxidant defenses, which neutralize harmful free radicals. In addition, FOXO3 is involved in DNA repair, ensuring that genetic material remains stable and functional. When cells are severely damaged, it can even trigger apoptosis, a process that removes faulty cells and prevents diseases such as cancer.
Scientific studies have shown that certain variants of the FOXO3 gene are more common in people who live exceptionally long lives, such as centenarians. This suggests that genetics plays a crucial role in determining lifespan. However, lifestyle factors also influence FOXO3 activity. Regular exercise, calorie restriction, and healthy habits may enhance its protective effects.
Overall, FOXO3 represents a key link between genetics and aging, offering valuable insights into how humans might live longer and healthier lives.
FOXO3 是与人类长寿密切相关的最重要基因之一。它属于一类能够产生转录因子的基因，这些蛋白质负责调控其他基因的表达。简单来说，FOXO3 就像细胞中的“指挥官”，帮助细胞应对压力并在长期内维持稳定。
FOXO3 的一个关键功能是保护细胞免受损伤。它在减少氧化压力方面起着重要作用，通过激活抗氧化防御系统来中和有害的自由基。此外，FOXO3 还参与 DNA 修复，确保遗传物质保持稳定和正常功能。当细胞受到严重损伤时，它甚至可以触发细胞凋亡（apoptosis），从而清除异常细胞，预防癌症等疾病的发生。
科学研究表明，在一些特别长寿的人群（如百岁老人）中，某些 FOXO3 基因变体更为常见。这表明基因在决定寿命方面起着关键作用。然而，生活方式同样会影响 FOXO3 的活性。规律运动、限制热量摄入以及健康的生活习惯，都可能增强它的保护作用。
总体来看，FOXO3 构建了基因与衰老之间的重要联系，为人类如何活得更长、更健康提供了宝贵的科学启示。
1. gene /dʒiːn/ n. 基因
搭配：carry a gene / genetic disease
例句：Some people carry genes that protect them from illness.
翻译：有些人携带可以抵抗疾病的基因。
2. factor /ˈfæktə(r)/ n. 因素
搭配：key factor / main factor / contributing factor
例句：Exercise is an important factor in staying healthy.
翻译：锻炼是保持健康的重要因素。
3. respond to v. 对……作出反应
搭配：respond to stress / respond to changes
例句：Cells respond to stress in different ways.
翻译：细胞对压力会有不同的反应。
4. offer /ˈɒfə(r)/ v. 提供
搭配：offer help / offer protection / offer a solution
例句：This diet may offer protection against disease.
翻译：这种饮食可能提供对疾病的保护。
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5. longevity /lɒnˈdʒevəti/ n. 长寿
搭配：human longevity / promote longevity
例句：Scientists study the secrets of human longevity.
翻译：科学家研究人类长寿的秘密。
6. transcription /trænˈskrɪpʃən/ n. 转录（生物学）
搭配：gene transcription / transcription factor
例句：FOXO3 is involved in gene transcription.
翻译：FOXO3 参与基因转录过程。
7. cellular /ˈseljələ(r)/ adj. 细胞的
搭配：cellular function / cellular damage
例句：Exercise improves cellular function.
翻译：运动可以改善细胞功能。
8. oxidative /ˈɒksɪdeɪtɪv/ adj. 氧化的
搭配：oxidative stress / oxidative damage
例句：Oxidative stress can speed up aging.
翻译：氧化压力会加速衰老。
9. antioxidant /ˌæntiˈɒksɪdənt/ n./adj. 抗氧化物；抗氧化的
搭配：antioxidant defense / antioxidant foods
例句：Fruits are rich in antioxidants.
翻译：水果富含抗氧化物质。
10. apoptosis /ˌæpɒpˈtəʊsɪs/ n. 细胞凋亡
搭配：trigger apoptosis / programmed cell death
例句：Apoptosis helps remove damaged cells.
翻译：细胞凋亡有助于清除受损细胞。
