含有脂质滴和线粒体的细胞外脂质体在黑色素瘤细胞分裂过程中释放出来
Jana Karbanová1,2, Ilker A Deniz1,2, Michaela Wilsch-Bräuninger3
1Biotechnology Center (BIOTEC) and Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Tatzberg 47-49, Dresden, 01307, Germany.
Cell communication and signaling : CCS
|January 19, 2024
概括
研究人员发现了由攻击性黑色素瘤细胞释放的大型细胞外囊泡 (EVs). 这些CD133+ EVs含有脂质滴和线粒体,可能会影响黑色素瘤的生长和传播.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 细胞外囊泡研究研究
背景情况:
- 全球黑色素瘤发病率正在上升,需要对转移性黑色素瘤生物学有更深入的了解.
- 之前的研究已经确定了由FEMX-I黑色素瘤细胞释放的含有CD133的小细胞外囊 (EVs).
- 细胞外囊泡调解细胞间通信,影响瘤的微环境.
研究的目的:
- 研究由转移性黑色素瘤细胞释放的大型细胞外囊泡 (EVs) 的新发现群体的特征和起源.
- 探索CD133和脂质滴在这些大型EVs的形成和释放中的作用.
- 了解这些新型EVs对黑色素瘤进展的潜在影响.
主要方法:
- 使用实时视频显微镜观察FEMX-I黑色素瘤细胞释放的大型EV.
- 使用流式细胞计和显微镜技术来描述释放的EVs的大小,含量 (脂质滴,线粒体) 和标志物表达 (CD133).
- 进行了CD133的基因沉默,以评估其对EV形成和细胞脂质滴滴分布的影响.
主要成果:
- 在FEMX-I黑色素瘤细胞培养物中发现了一种新型的大型细胞外囊泡 (EVs) 种群,其尺寸为2至6微米.
- 这些大型EV含有脂质滴和线粒体,起源于细胞分裂期间的脂质滴丰富的细胞末端.
- 抑制CD133表达破坏了脂质滴滴的分布,并显著减少了这些大型EVs的形成.
结论:
- 新发现的大型CD133+ EVs,含有脂质滴和线粒体,代表了侵略性黑色素瘤细胞间通信的独特机制.
- 黑色素瘤细胞释放和吸收这些大型EV可能会影响细胞代谢,生长和传播.
- 针对这些新型EV可以为管理转移性黑色素瘤提供新的治疗策略.
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