开发叶酸结合的miR-34a治疗前列腺癌:挑战和前景
Wen Jess Li1,2, Yunfei Wang1, Xiaozhuo Liu1
1Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA.
International journal of molecular sciences
|February 24, 2024
概括
针对前列腺癌 (PCa) 治疗的微RNA-34a (miR-34a) 的向输送具有挑战性. 叶酸结合的miR-34a有效地向其他癌症,但由于受体表达低,不能针对PCa,从而阻碍治疗的发展.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药物运输 药物运输 药物运输
背景情况:
- 前列腺癌 (PCa) 是男性癌症死亡的主要原因,通常是由异质癌症干细胞 (PCSCs) 驱动的,这些干细胞赋予治疗耐药性.
- 微RNA-34a (miR-34a) 通过向关键生存途径,显示出对PCSCs的治疗潜力,但其临床应用受到交付挑战和毒性限制.
- 通过联体介导的输送,如叶酸结合,旨在改善miR-34a的特异性和减少副作用,在其他癌症类型中表现出成功.
研究的目的:
- 为了研究叶酸结合 miR-34a (叶酸-miR-34a) 在前列腺癌中的疗效和向输送.
- 评估PCa细胞中叶酸受体α (FOLR1) 和前列腺特异性膜抗原 (PSMA) 的表达,作为叶酸-miR-34a输送的潜在标.
- 了解开发PCa的配体结合miR-34a治疗方法的挑战和机会.
主要方法:
- 在PCa中评估miR-34a水平与TP53变化.
- 感染过的PCa细胞模仿miR-34a,以评估其对基因表达和细胞生长的影响.
- 在包括PCa在内的各种癌细胞系中测试了叶酸-miR-34a的抗瘤疗效和向输送,并分析了FOLR1和PSMA的表达.
主要成果:
- 在PCa中,miR-34a水平降低了TP53丢失或突变;miR-34a模仿转染抑制了PCa细胞生长.
- 叶酸-miR-34a在乳腺,卵巢和宫癌细胞中显示出显著的抗瘤作用.
- 叶酸-miR-34a在PCa细胞中显示出最小的疗效和向性传递,与低FOLR1表达和缺乏叶酸与PSMA结合相关.
结论:
- 叶酸-miR-34a对PCa的治疗潜力受到PCa细胞上FOLR1和PSMA等点受体表达不足的限制.
- 在PCa中针对miR-34a的向传递策略需要替代的配体或方法来解决前列腺癌的特定受体场景.
- 这项研究强调了开发PCa的联结体miR-34a治疗方法的关键挑战,需要进一步研究新的输送机制.
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