Radioimmunotherapy of solid tumors: searching for the right target.

Radioimmunotherapy of solid tumors: searching for the right target.
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DOI:
10.2174/156720111793663651
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发表时间:
2011-01
影响因子:
2.4
通讯作者:
Sgouros G
Sgouros G
中科院分区:
医学4区
文献类型:
--
作者:
Song H;Sgouros G

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实体肿瘤的放射免疫治疗仍然是一个挑战,尽管90Y ibritumomab tiuxetan(Zvalin)和131I Tositumomab(Bexxar)在治疗非霍奇金淋巴瘤方面取得了巨大成功。由于各种原因,针对实体肿瘤的放射性标记抗体的临床试验并未导致与针对淋巴瘤的反应相同的反应。相比之下,针对与细胞信号通路相关的实体肿瘤受体的未标记抗体已观察到有希望的反应。这些观察表明,载体抗体的抗肿瘤效果可能是实现临床反应的关键。在这里,我们回顾和比较了免疫治疗中使用的放射性标记抗体和未标记抗体靶向的肿瘤抗原。综述表明,临床前开发的放射性标记抗体的趋势是也针对与信号通路相关的抗原,这些信号通路对肿瘤的生长和生存至关重要。
Radioimmunotherapy of solid tumors remains a challenge despite the tremendous success of 90Y ibritumomab tiuxetan (Zevalin) and 131I Tositumomab (Bexxar) in treating non-Hodgkin’s lymphoma. For a variety of reasons, clinical trials of radiolabeled antibodies against solid tumors have not led to responses equivalent to those seen against lymphoma. In contrast, promising responses have been observed with unlabeled antibodies that target solid tumor receptors associated with cellular signaling pathways. These observations suggest that anti-tumor efficacy of the carrier antibody might be critical to achieving clinical responses. Here, we review and compare tumor antigens targeted by radiolabeled antibodies and unlabeled antibodies used in immunotherapy. The review shows that the trend for radiolabeled antibodies under pre-clinical development is to also target antigens associated with signaling pathways that are essential for the growth and survival of the tumor.
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