Trop-2 is a determinant of breast cancer survival.

Trop-2 is a determinant of breast cancer survival.
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DOI:
10.1371/journal.pone.0096993
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Alberti S
Alberti S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ambrogi F;Fornili M;Boracchi P;Trerotola M;Relli V;Simeone P;La Sorda R;Lattanzio R;Querzoli P;Pedriali M;Piantelli M;Biganzoli E;Alberti S

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Trop-2 是一种驱动肿瘤生长的钙信号转导器。相对于 Trop-2 成熟阶段具有选择性反应性的抗 Trop-2 抗体可以识别两种不同的 Trop-2 库,一种位于细胞膜中,另一种位于细胞质中。值得注意的是,膜定位/功能性 Trop-2 被发现与肿瘤侵袭性和不同乳腺癌亚组的决定因素存在差异相关。这些发现表明 Trop-2 对癌症进展有影响。我们在乳腺癌中测试了这个模型。使用抗 Trop-2 抗体通过免疫组织化学分析了一个大型、连续的人类乳腺癌病例系列(702 例;中位随访 8 年),该抗体对细胞质保留的 Trop-2 与功能性膜相关的 Trop-2 具有选择性反应。我们发现 Trop-2 的膜定位对于总生存而言是不利的预后因素(所有死亡的 1+ 与 0:风险比,1.63;P = 0.04),而细胞内 Trop-2 对预后有有利的影响,所有死亡的调整后风险比为 0.48(高与低;P = 0.003)。细胞内 Trop-2 对疾病复发也有相应的影响(高与低:风险比,0.51;P = 0.004)。总而言之,我们证明 Trop-2 激活状态是肿瘤进展的关键决定因素,也是乳腺癌患者生存的有力指标。
Trop-2 is a calcium signal transducer that drives tumor growth. Anti-Trop-2 antibodies with selective reactivity versus Trop-2 maturation stages allowed to identify two different pools of Trop-2, one localized in the cell membrane and one in the cytoplasm. Of note, membrane-localized/functional Trop-2 was found to be differentially associated with determinants of tumor aggressiveness and distinct breast cancer subgroups. These findings candidated Trop-2 states to having an impact on cancer progression. We tested this model in breast cancer. A large, consecutive human breast cancer case series (702 cases; 8 years median follow-up) was analyzed by immunohistochemistry with anti-Trop-2 antibodies with selective reactivity for cytoplasmic-retained versus functional, membrane-associated Trop-2. We show that membrane localization of Trop-2 is an unfavorable prognostic factor for overall survival (1+ versus 0 for all deaths: hazard ratio, 1.63; P = 0.04), whereas intracellular Trop-2 has a favorable impact on prognosis, with an adjusted hazard ratio for all deaths of 0.48 (high versus low; P = 0.003). A corresponding impact of intracellular Trop-2 was found on disease relapse (high versus low: hazard ratio, 0.51; P = 0.004). Altogether, we demonstrate that the Trop-2 activation states are critical determinants of tumor progression and are powerful indicators of breast cancer patients survival.
DOI: 10.1038/bjc.1995.338
发表时间: 1995-08
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