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EGFR 酪氨酸激酶受体在细胞外囊泡中的作用机制。

Mechanisms of Action of EGFR Tyrosine Kinase Receptor Incorporated in Extracellular Vesicles.

机构信息

Central Laser Facility, Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot OX11 0FA, UK.

The Wood Lab, Department of Paediatrics, University of Oxford, Oxford OX1 3QX, UK.

出版信息

Cells. 2020 Nov 19;9(11):2505. doi: 10.3390/cells9112505.

Abstract

EGFR and some of the cognate ligands extensively traffic in extracellular vesicles (EVs) from different biogenesis pathways. EGFR belongs to a family of four homologous tyrosine kinase receptors (TKRs). This family are one of the major drivers of cancer and is involved in several of the most frequent malignancies such as non-small cell lung cancer, breast cancer, colorectal cancer and ovarian cancer. The carrier EVs exert crucial biological effects on recipient cells, impacting immunity, pre-metastatic niche preparation, angiogenesis, cancer cell stemness and horizontal oncogene transfer. While EV-mediated EGFR signalling is important to EGFR-driven cancers, little is known about the precise mechanisms by which TKRs incorporated in EVs play their biological role, their stoichiometry and associations to other proteins relevant to cancer pathology and EV biogenesis, and their means of incorporation in the target cell. In addition, it remains unclear whether different subtypes of EVs incorporate different complexes of TKRs with specific functions. A raft of high spatial and temporal resolution methods is emerging that could solve these and other questions regarding the activity of EGFR and its ligands in EVs. More importantly, methods are emerging to block or mitigate EV activity to suppress cancer progression and drug resistance. By highlighting key findings and areas that remain obscure at the intersection of EGFR signalling and EV action, we hope to cross-fertilise the two fields and speed up the application of novel techniques and paradigms to both.

摘要

表皮生长因子受体(EGFR)及其部分同源配体广泛存在于不同生物发生途径的细胞外囊泡(EVs)中。EGFR 属于四个同源酪氨酸激酶受体(TKRs)家族之一。该家族是癌症的主要驱动因素之一,涉及多种最常见的恶性肿瘤,如非小细胞肺癌、乳腺癌、结直肠癌和卵巢癌。载体 EVs 对受体细胞产生至关重要的生物学效应,影响免疫、转移前生态位准备、血管生成、癌细胞干性和水平致癌基因转移。虽然 EV 介导的 EGFR 信号对 EGFR 驱动的癌症很重要,但对于 EGFR 驱动的癌症,对于 TKRs 整合到 EVs 中发挥其生物学作用的精确机制、它们的化学计量和与癌症病理学和 EV 发生相关的其他蛋白质的关联以及它们在靶细胞中的掺入方式知之甚少。此外,不同亚型的 EV 是否包含具有特定功能的不同 TKR 复合物仍不清楚。一系列具有高时空分辨率的方法正在涌现,这些方法可以解决 EGFR 和其配体在 EV 中的活性的这些和其他问题。更重要的是,正在出现阻止或减轻 EV 活性以抑制癌症进展和耐药性的方法。通过强调 EGFR 信号和 EV 作用交叉点的关键发现和仍然不清楚的领域,我们希望能够使这两个领域相互促进,并加速将新技术和新范例应用于这两个领域。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d36b/7699420/3f273f721715/cells-09-02505-g001.jpg

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