radioresistant

简明释义

英[reɪdɪəʊrɪˈzɪstənt]美[ˈreɪdioʊrɪˈzɪstənt]

adj. 抗放射性的

英英释义

单词用法

同义词

反义词

例句

1.Combined therapy also tended to improve the response in radioresistant tumors.

加温合并放射治疗还可以提高抗放射性肿瘤如某些肉瘤的疗效。

2.Conclusion The new subline D6-R is more radioresistant as compare to its parent D6 cell line, and has a different cell cycle distribution.

结论新的细胞亚系d6 R比其亲本对射线更加抗拒，并且显示出与亲本不同的细胞周期特征。

3.Objective To investigate the radioresistant mechanism of the newly established D6-R subline with respects to cell growth kinetics, radiation-induced apoptosis, DNA damage and repair.

目的研究新的放射抗性肺癌D6-R细胞亚系在增殖活性、放射诱导的凋亡、DNA损伤与修复方面的特征，初步探讨D6-R细胞放射抗性的机理。

4.Objective To investigate the radioresistant mechanism of the newly established D6-R subline with respects to cell growth kinetics, radiation-induced apoptosis, DNA damage and repair.

目的研究新的放射抗性肺癌D6-R细胞亚系在增殖活性、放射诱导的凋亡、DNA损伤与修复方面的特征，初步探讨D6-R细胞放射抗性的机理。

5.The radioresistant nature of certain tumors poses challenges for oncologists.

某些肿瘤的耐辐射特性给肿瘤科医生带来了挑战。

6.Some types of cancer cells are known to be radioresistant, making them harder to treat with radiation therapy.

某些类型的癌细胞被认为是耐辐射的，使得用放疗治疗它们变得更加困难。

7.New treatments are being developed to target radioresistant cells more effectively.

新的治疗方法正在开发，以更有效地针对耐辐射的细胞。

8.Researchers are studying radioresistant bacteria that can survive in high radiation environments.

研究人员正在研究能够在高辐射环境中生存的耐辐射的细菌。

9.Understanding the mechanisms behind radioresistant tumors can lead to better treatment strategies.

理解耐辐射肿瘤背后的机制可以导致更好的治疗策略。

作文

In the field of biology and medicine, the term radioresistant refers to organisms or cells that show a remarkable ability to withstand radiation exposure without suffering significant damage. This characteristic is particularly important in the context of cancer treatment, where radiation therapy is commonly used to target and destroy malignant cells. However, some tumors exhibit radioresistant properties, making them more challenging to treat effectively.Understanding the mechanisms behind radioresistant cells can provide valuable insights into developing more effective therapies. For instance, certain types of cancer cells can repair DNA damage more efficiently than normal cells, allowing them to survive radiation doses that would typically be lethal. Additionally, these cells may have enhanced antioxidant defenses that protect them from oxidative stress caused by radiation.Research has shown that various factors contribute to the radioresistant nature of certain tumors. The tumor microenvironment, which includes surrounding cells, blood vessels, and extracellular matrix, plays a crucial role in influencing how cancer cells respond to radiation. For example, hypoxic conditions—where oxygen levels are low—can make tumors more radioresistant because oxygen enhances the effects of radiation therapy. Therefore, targeting the tumor microenvironment could be a potential strategy to overcome this resistance.Moreover, the identification of specific biomarkers associated with radioresistant tumors can help in predicting treatment outcomes. By understanding which tumors are likely to be resistant to radiation, oncologists can tailor treatment plans more effectively, potentially incorporating alternative therapies such as immunotherapy or targeted drug treatments alongside traditional radiation.In addition to cancer research, the concept of radioresistant organisms extends to various fields, including microbiology and environmental science. Certain bacteria, for instance, have evolved to thrive in high-radiation environments, such as those found in nuclear reactors or space. These radioresistant microorganisms possess unique adaptations that allow them to repair DNA damage and maintain cellular functions despite extreme radiation levels. Studying these organisms not only enhances our understanding of life’s resilience but also opens up possibilities for bioremediation strategies in contaminated environments.The implications of radioresistant research are vast. In medicine, it could lead to breakthroughs in overcoming treatment resistance and improving patient outcomes. In environmental science, understanding how life adapts to radiation can inform our approaches to managing radioactive waste or mitigating the impact of nuclear accidents. Furthermore, this knowledge could inspire innovations in biotechnology, such as developing new materials or processes that mimic the resilience of radioresistant organisms.In conclusion, the study of radioresistant cells and organisms holds significant promise across multiple disciplines. As we continue to unravel the complexities of radiation resistance, we pave the way for advancements in cancer treatment, environmental management, and even astrobiology. Embracing this knowledge will undoubtedly enhance our ability to confront the challenges posed by radiation, ultimately benefiting both human health and the environment.

在生物学和医学领域，术语放射抗性指的是在辐射暴露下表现出显著承受能力的生物体或细胞，这些生物体或细胞在不遭受重大损害的情况下能够存活。这一特性在癌症治疗的背景下尤为重要，因为放射治疗通常用于针对和摧毁恶性细胞。然而，一些肿瘤表现出放射抗性特性，使得它们更具挑战性，难以有效治疗。理解放射抗性细胞背后的机制可以为开发更有效的治疗方法提供宝贵的见解。例如，某些类型的癌细胞能够比正常细胞更有效地修复DNA损伤，从而使它们能够在通常致命的辐射剂量下存活。此外，这些细胞可能具有增强的抗氧化防御机制，保护它们免受辐射引起的氧化应激。研究表明，影响某些肿瘤放射抗性特性的因素有多种。肿瘤微环境，包括周围细胞、血管和细胞外基质，在影响癌细胞对辐射的反应中发挥着关键作用。例如，缺氧条件（氧气水平低）可能使肿瘤更具放射抗性，因为氧气增强了放射治疗的效果。因此，针对肿瘤微环境可能是克服这种抗性的潜在策略。此外，与放射抗性肿瘤相关的特定生物标志物的识别可以帮助预测治疗结果。通过了解哪些肿瘤可能对辐射具有抗性，肿瘤科医生可以更有效地定制治疗计划，可能结合免疫疗法或靶向药物治疗与传统放射治疗相结合。除了癌症研究，放射抗性生物体的概念还延伸到微生物学和环境科学等多个领域。例如，某些细菌已经进化为在高辐射环境中生存，例如核反应堆或太空中。这些放射抗性微生物具有独特的适应性，使其能够修复DNA损伤并在极端辐射水平下维持细胞功能。研究这些生物不仅增强了我们对生命韧性的理解，还为污染环境的生物修复策略开辟了可能性。放射抗性研究的影响是巨大的。在医学上，它可能导致克服治疗抗性和改善患者预后的突破。在环境科学中，理解生命如何适应辐射可以为我们管理放射性废物或减轻核事故影响的方法提供信息。此外，这一知识还可能激励生物技术的创新，例如开发新材料或过程，以模仿放射抗性生物体的韧性。总之，研究放射抗性细胞和生物体在多个学科中具有重要前景。随着我们继续揭示辐射抗性的复杂性，我们为癌症治疗、环境管理甚至天体生物学的进步铺平了道路。拥抱这一知识无疑将增强我们应对辐射带来的挑战的能力，最终惠及人类健康和环境。