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| 1 | RNA Structural Dynamics Modulate EGFR-TKI Resistance Through Controlling YRDC Translation in NSCLC Cells显示文摘Epidermal growth factor receptor-tyrosine kinase inhibitors(EGFR-TKIs)positively affect the initial control of non-small cell lung cancer(NSCLC).Rapidly acquired resistance to EGFR-TKIs is a major hurdle in successful treatment.However,the mechanisms that control the resistance of EGFR-TKIs remain largely unknown.RNA structures have widespread and crucial functions in many biological regulations;however,the functions of RNA structures in regulating cancer drug resistance remain unclear.Here,the psoralen analysis of RNA interactions and structures(PARIS)method is used to establish the higher-order RNA structure maps of EGFRTKIs-resistant and-sensitive cells of NSCLC.Our results show that RNA structural regions are enriched in untranslated regions(UTRs)and correlate with translation efficiency(TE).Moreover,yrdC N6-threonylcarbamoyltransferase domain containing(YRDC)promotes resistance to EGFR-TKIs.RNA structure formation in YRDC 30 UTR suppresses embryonic lethal abnormal vision-like 1(ELAVL1)binding,leading to EGFR-TKI sensitivity by impairing YRDC translation.A potential therapeutic strategy for cancer treatment is provided using antisense oligonucleotide(ASO)to perturb the interaction between RNA and protein.Our study reveals an unprecedented mechanism through which the RNA structure switch modulates EGFR-TKI resistance by controlling YRDC mRNA translation in an ELAVL1-dependent manner. | Boyang Shi Ke An Yueqin Wang Yuhan Fei Caixia Guo Qiangfeng Cliff Zhang Yun-Gui Yang Xin Tian Quancheng Kan | 2023 | Genomics, Proteomics & Bioinformatics2023，21，4： | 1 |
| 2 | 鱼类卵子质量研究及其关键科学问题显示文摘卵子质量(卵质)是一种复杂的生物学特性,是决定雌性动物生殖能力的主要因素。鱼类卵质通常指卵子的受精能力及支持胚胎正常发育的能力,它直接关系到受精卵的形成、胚胎的早期发育及仔、稚、幼鱼的成活与生长,是决定鱼类繁育成功和养殖效率的首要环节。对卵质进行客观而准确的评估,提升卵子质量,以获得大量高质量的成熟卵,是水产种业和养殖业发展的重要前提。理论上,鱼类的卵质由卵子中所储存的所有母源物质的集合及其时空分布格局所共同决定。文章综述了鱼类卵子的发生和成熟及鱼类卵质评估标准的研究现状,重点评述了以斑马鱼为模型所开展的母源因子对卵子质量的调控研究。最后,提出了鱼类卵质研究中亟待研究和解决的重要科学问题,即需要重点研究卵原细胞-卵母细胞转换、卵母细胞-卵子转换、卵-胚转换、胚胎-仔鱼转换、仔-稚鱼转换等决定卵质和受到卵质影响的关键生物学事件。 | 焦圣博 何牡丹 孙永华 | 2023 | 水生生物学报2023，47，6： | 1 |
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