腫瘤藥物會在細胞核縮合物中聚集
作者:
小柯機器人發布時間:2020/6/20 17:14:30
美國麻省理工學院Richard A. Young研究小組發現,腫瘤藥物會在細胞核縮合物中聚集。相關論文於2020年6月19日發表於國際學術期刊《科學》。
研究人員檢測了細胞核縮合物是否濃縮了小分子癌症治療藥物,從而改變了它們的藥效特性。研究人員發現抗腫瘤藥在體外能夠集中在特定的蛋白質縮合物中,並且這是通過與藥物靶標無關的物理化學性質發生的。在腫瘤細胞中也觀察到這種行為,即藥物隔離會影響藥物活性。
研究人員發現,改變縮合物的性質會影響藥物的濃度和活性。這些結果表明,縮合物中小分子的選擇性分配和濃縮有助於藥物動力學,並且對該現象的進一步理解可能有助於疾病療法的發展。
據悉,細胞包含各種相分離的縮合物,從而將具有獨特理化性質的生物分子分隔並濃縮。
附:英文原文
Title: Partitioning of cancer therapeutics in nuclear condensates
Author: Isaac A. Klein, Ann Boija, Lena K. Afeyan, Susana Wilson Hawken, Mengyang Fan, Alessandra DallAgnese, Ozgur Oksuz, Jonathan E. Henninger, Krishna Shrinivas, Benjamin R. Sabari, Ido Sagi, Victoria E. Clark, Jesse M. Platt, Mrityunjoy Kar, Patrick M. McCall, Alicia V. Zamudio, John C. Manteiga, Eliot L. Coffey, Charles H. Li, Nancy M. Hannett, Yang Eric Guo, Tim-Michael Decker, Tong Ihn Lee, Tinghu Zhang, Jing-Ke Weng, Dylan J. Taatjes, Arup Chakraborty, Phillip A. Sharp, Young Tae Chang, Anthony A. Hyman, Nathanael S. Gray, Richard A. Young
Issue&Volume: 2020/06/19
Abstract: The nucleus contains diverse phase-separated condensates that compartmentalize and concentrate biomolecules with distinct physicochemical properties. Here, we investigated whether condensates concentrate small-molecule cancer therapeutics such that their pharmacodynamic properties are altered. We found that antineoplastic drugs become concentrated in specific protein condensates in vitro and that this occurs through physicochemical properties independent of the drug target. This behavior was also observed in tumor cells, where drug partitioning influenced drug activity. Altering the properties of the condensate was found to affect the concentration and activity of drugs. These results suggest that selective partitioning and concentration of small molecules within condensates contributes to drug pharmacodynamics and that further understanding of this phenomenon may facilitate advances in disease therapy.
DOI: 10.1126/science.aaz4427
Source: https://science.sciencemag.org/content/368/6497/1386
Science:《科學》,創刊於1880年。隸屬於美國科學促進會,最新IF:41.037