通过调节SP4替代拼接,SRSF3可以抑制RCC瘤的产生和进展
Liuxu Zhang1, Hongning Zhang2, Yuangui Tang1
1Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China; Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China.
Biochimica et biophysica acta. Molecular cell research
|September 2, 2024
概括
在细胞癌 (RCC) 中,SR剪接因子3 (SRSF3) 降低调节,抑制瘤生长. 通过上调SRSF3及其下游目标,长SP4异型 (L-SP4),抑制RCC细胞恶性病变并促进抗扩散.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 由拼接因子驱动的异常替代拼接 (AS) 在癌症中至关重要.
- 富含氨酸/氨酸 (SR) 的蛋白质是关键的剪接因子,但它们在细胞癌 (RCC) 中的作用尚不清楚.
研究的目的:
- 研究SR剪接因子3 (SRSF3) 在RCC进展中的作用和机制.
- 确定SRSF3作为RCC的治疗点的潜力.
主要方法:
- 在RCC组织中分析了SRSF3表达.
- 评估了SRSF3和SP4异型对RCC细胞恶性瘤的影响.
- 研究了SP4和SMAD4.4SRSF3介导调节的分子机制.
主要成果:
- 在RCC中SRSF3的下调,与患者存活率较差相关.
- 过度表达SRSF3抑制了RCC细胞恶性瘤.
- SRSF3通过与SP4异构3结合,促进了长SP4异构 (L-SP4) 的表达.
- L-SP4,不是简短的SP4 (S-SP4),抑制了RCC恶性病变.
- L-SP4转录上调SMAD4,有助于SRSF3的抗繁殖作用.
结论:
- 在RCC的进展中,SRSF3起着抑制作用.
- 通过调节SP4的替代拼接和促进SMAD4的表达,SRSF3发挥了它的抗癌作用.
- SRSF3代表了细胞癌的潜在新型治疗标.
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