在三阴性乳腺癌细胞中MALAT1的下调
Dagmara Klopotowska1, Janusz Matuszyk1
1Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114, Wroclaw, Poland.
Biochemistry and biophysics reports
|December 13, 2023
概括
长非编码RNA MALAT1 在侵袭性三阴性乳腺癌细胞系中被下调. 这项研究澄清了MALAT1.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 癌症研究 癌症研究
背景情况:
- 长非编码RNAMALAT1在细胞核中丰富,在各种癌症中升高.
- 关于乳腺癌细胞系中MALAT1的相互矛盾的报告需要进一步调查.
- 了解MALAT1的作用对于乳腺癌进展研究至关重要.
研究的目的:
- 在三阴性乳腺癌 (TNBC) 和光线性乳腺癌细胞系中量化MALAT1转录水平.
- 确定不同乳腺癌亚型中MALAT1的表达模式.
- 澄清MALAT1在乳腺癌进展中的作用.
主要方法:
- 使用定量实时PCR (qPCR) 来测量MALAT1转录的正常化相对量 (NRQ).
- 总RNA被从光线 (T47D,MCF-7),TNBC (MDA-MB-468,CAL-51,MDA-MB-231) 和正常 (MCF-10A) 乳腺细胞系中分离出来.
- 鉴定出CCSER2是MALAT1正常化的一个可靠的参考基因.
主要成果:
- 对于MALAT1 NRQ,CCSER2规范化提供了最窄的置信区间.
- 与正常和光细胞相比,TNBC细胞系中的MALAT1主要转录水平显著降低.
- 在大多数乳腺癌细胞系中,MALAT1少数拼接变体的增加.
结论:
- CCSER2规范化的qPCR数据表明,在侵袭性乳腺癌亚型中,MALAT1的下调.
- 与正常和雌激素受体阳性乳腺癌细胞系相比,在TNBC中观察到这种下调.
- 研究结果表明,MALAT1结合变异在乳腺癌中起着复杂的作用.
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