前列腺癌的无声合作伙伴:纤维细胞及其对谷氨酸代谢操纵影响
Pia V Hönscheid1,2,3, Gustavo B Baretton1,2,3,4, Martin Puhr5
1Institute of Pathology, University Hospital Carl Gustav Carus, Medical Faculty, Technische Universität Dresden, 01307 Dresden, Germany.
International journal of molecular sciences
|September 14, 2024
概括
与癌症相关的纤维细胞 (CAF) 通过改变谷氨酸代谢来影响前列腺癌 (PCa) 的生长. 针对GLS1的向对特定患者群体有希望,特别是在抵抗割的PCa.
科学领域:
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
- 瘤微环境研究 研究
背景情况:
- 瘤微环境 (TME) 中的与癌症相关的纤维细胞 (CAF) 显著影响癌症进展和治疗结果.
- 在前列腺癌 (PCa) 中,CAFs通过影响代谢途径,癌症干细胞和治疗耐药性来促进恶性瘤.
- 向谷氨胺 (Gln) 代谢是一种减少癌症扩散和干性的潜在策略,但研究往往缺乏CAF-癌症相互作用背景.
研究的目的:
- 研究CAFs对前列腺癌 (PCa) 增长和行为的影响.
- 评估谷氨胺 (Gln) 代谢在CAF介导的PCa进展中的作用.
- 评估GLS1作为PCa的潜在治疗点.
主要方法:
- 共同培养系统使用彩色标记的PCa细胞系和纤维细胞来研究CAF-PCa相互作用.
- 通过剥夺和GLS1抑制操纵GLN代谢.
- 蛋白质组分析以确认代谢变化.
- 分析PCa患者组织中的GLS1表达和与整体存活时间的相关性.
主要成果:
- 在荷尔蒙敏感的LNCaP细胞中,CAFs增强了增殖,但不增强耐化的C4-2细胞.
- 在CAFs存在的情况下,PCa细胞系的克隆生长增加.
- 在CAF影响下,LNCaP细胞表现出增加的Gln依赖性,由蛋白质组数据证实.
- 在患者样本中,PCa上皮和肌层都观察到高GLS1水平.
- 在PCa上皮质中高GLS1表达和低 stromal表达确定了一个生存分析的高风险组.
结论:
- CAFs调节PCa细胞生长和克隆性潜力,部分通过Gln代谢.
- 在PCa组织中,GLS1被上调,是潜在的治疗点.
- 针对GLS1的治疗可能有利于特定的PCa患者亚组,特别是那些患有抵抗割的疾病和独特GLS1表达模式的患者.
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