Characterization of an antibody that can detect an activated IGF-I receptor in human cancers.

Characterization of an antibody that can detect an activated IGF-I receptor in human cancers.
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可检测人类癌症中激活的 IGF-I 受体的抗体的表征。

DOI:
10.1006/excr.1999.4562
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发表时间:
1999
期刊:
Experimental cell research.
影响因子:
--
通讯作者:
Baserga,R
Baserga,R
中科院分区:
--
文献类型:
--
作者:
Rubini,M;D'Ambrosio,C;Carturan,S;Yumet,G;Catalano,E;Shan,S;Huang,Z;Criscuolo,M;Pifferi,M;Baserga,R

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I型胰岛素样生长因子受体(IGF-IR)在恶性转化和细胞凋亡中起重要作用。它在人类癌症中的作用现在已经牢牢确立。只有当受体被其配体激活时,IGF-IR信号才会发生,配体诱导受体在几个酪氨酸残基上自动磷酸化。虽然使用常规抗体可以在人类癌症中检测到IGF-IR(磷酸化或非磷酸化),但希望获得只有在被其配体激活时才能检测到IGF-IR的抗体。我们在这篇文章中描述和表征了这种抗体,并表明它可以用于人类癌症的切片来检测自磷酸化的IGF-IR。这种抗体将有助于检测自分泌或旁分泌对正常和肿瘤细胞的影响,并最终可能在人类原发和转移癌的诊断和预后研究中有用。
The type 1 insulin-like growth factor receptor (IGF-IR) plays an important role in malignant transformation and in apoptosis. Its role in human cancer has now been firmly established. IGF-IR signaling occurs only when the receptor is activated by its ligands, which induce autophosphorylation of the receptor at several tyrosine residues. Although the IGF-IR (phosphorylated or not) can be detected in human cancers with conventional antibodies, it would be desirable to obtain antibodies that can detect the IGF-IR only when activated by its ligands. We describe and characterize in this paper such an antibody and show that it can be used in sections of human cancers to detect an autophosphorylated IGF-IR. This antibody will be useful in detecting autocrine or paracrine influences on normal and tumor cells and could eventually be also useful in diagnostic and prognostic studies of human primary and metastatic cancer.
DOI: 10.1126/science.279.5350.563
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