Keratin 1 as a cell-surface receptor in cancer.

Keratin 1 as a cell-surface receptor in cancer.
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DOI:
10.1016/j.bbcan.2021.188664
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发表时间:
2022-01
期刊:
Biochimica et biophysica acta. Reviews on cancer
影响因子:
--
通讯作者:
Kaur K
Kaur K
中科院分区:
其他
文献类型:
--
作者:
Ogunnigbagbe O;Bunick CG;Kaur K

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角蛋白是一种纤维蛋白,参与多种重要的细胞功能,包括中间纤维的形成。此外,角蛋白作为上皮细胞标记物,在癌症进展、诊断和治疗中的作用已成为重要的研究重点。角蛋白1(K1)是一种II型角蛋白,其结构由卷曲的中心结构域组成,两侧是N-末端和C-末端富含甘氨酸的柔性环。虽然细胞质K1的结构已经确定,但细胞表面K1的结构尚不清楚。一些转化的细胞,如癌细胞和经历了氧化应激的细胞,表现出整体和/或细胞表面K1表达水平的增加。细胞表面角蛋白(CSKS)可以被修饰或截断,其作用尚未完全阐明。目前的研究表明,CSKS参与了受体介导的内吞作用和免疫逃避。在这篇综述中,我们讨论了在利用CSK1作为靶向药物输送到癌细胞的受体的背景下,与K1结构、过度表达和细胞表面表达相关的发现,以及开发癌症新治疗方法的其他策略。
Keratins are fibrous proteins that take part in several important cellular functions, including the formation of intermediate filaments. In addition, keratins serve as epithelial cell markers, which has made their role in cancer progression, diagnosis, and treatment an important focus of research. Keratin 1 (K1) is a type II keratin whose structure is comprised of a coiled-coil central domain flanked by flexible, glycine-rich loops in the N- and C-termini. While the structure of cytoplasmic K1 is established, the structure of cell-surface K1 is not known. Several transformed cells, such as cancerous cells and cells that have undergone oxidative stress, display increased levels of overall and/or cell-surface K1 expression. Cell-surface keratins (CSKs) may be modified or truncated, and their role is yet to be fully elucidated. Current studies suggest that CSKs are involved in receptor-mediated endocytosis and immune evasion. In this Review, we discuss findings relating to K1 structure, overexpression, and cell-surface expression in the context of utilizing CSK1 as a receptor for targeted drug delivery to cancer cells, and other strategies to develop novel treatments for cancer.
低复杂性蛋白段的原子结构揭示了组装网络的扭结β薄片。
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