喜报丨Arraystar (in vivo)rG4芯片荣获2025生命科学十大创新产品

非常感谢读者投票和专家评鉴,经过一个多月的评选,Arraystar (in vivo)rG4芯片从近三十个入围产品中脱颖而出,被评选为生物通2025生命科学十大创新产品之一。


产品创新点
RNA G-四联体(rG4)是调控基因表达的关键RNA结构,与癌症和神经退行性疾病相关,已成为新兴的治疗靶点。Arraystar (in vivo)rG4技术将体内DMS处理与体外重折叠技术相结合,通过BG4抗体特异性富集、去甲基化处理及高亲和探针捕获,精准定量转录组中的rG4结构。它消除了DMS诱导修饰所产生的偏差,显著提高了rG4定量分析的准确性和可靠性。


图1. rG4芯片实验流程图。


研究RNA G-四联体的重要性及意义

RNA G-四联体 (RNA G-quadruplexes,rG4)是由富含鸟嘌呤 (G) 的RNA序列通过Hoogsteen氢键形成的一种非经典二级结构。该结构由堆叠的G-四分体平面构成,并由K⁺等单价阳离子稳定(图1)。rG4的动态结构转变可调控RNA转录[1]、染色质修饰因子募集[2]、miRNA前体加工[3]、mRNA翻译[4, 5]以及 mRNA 稳定性[6]。此外,rG4 还能与m7G [3]、o8G[7]和m6A[8, 9]等 RNA 修饰共同调控基因表达。rG4形成发生失调,则会影响应激反应 [7]、癌症基因表达调控 [10, 11],并与帕金森病、路易体痴呆及多系统萎缩中发生的α-突触核蛋白聚集有关[12]。


Arraystar (in vivo)rG4芯片技术优势
1. 体内DMS处理与体外重折叠复现了真实的rG4结构
2. 使用高亲和性的BG4抗体特异性富集含有rG4结构的RNA
3. Demethylation处理去除了DMS 处理的副产物m1A/m3C所造成的检测干扰
4. Arraystar (in vivo)rG4芯片可以灵敏的检测rG4 RNA,包括RNA测序无法准确检测的低丰度RNA  >>点击了解更多


康成生物独家提供技术服务

康成生物|数谱生物国内独家提供Arraystar (in vivo)rG4芯片一站式技术服务。


参考文献
1.Yari H et al: LncRNA REG1CP promotes tumorigenesis through an enhancer complex to recruit FANCJ helicase for REG3A transcription. Nat Commun 2019, 10(1):5334.[PMID: 31767869]
2.Lee YW, Weissbein U, Blum R, Lee JT: G-quadruplex folding in Xist RNA antagonizes PRC2 activity for stepwise regulation of X chromosome inactivation. Mol Cell 2024, 84(10):1870-1885 e1879.[PMID: 38759625]
3.Pandolfini L et al: METTL1 Promotes let-7 MicroRNA Processing via m7G Methylation. Mol Cell 2019, 74(6):1278-1290 e1279.[PMID: 31031083]
4.Arora A, Suess B: An RNA G-quadruplex in the 3' UTR of the proto-oncogene PIM1 represses translation. RNA Biol 2011, 8(5):802-805.[PMID: 21734463]
5.Song J, Perreault JP, Topisirovic I, Richard S: RNA G-quadruplexes and their potential regulatory roles in translation. Translation (Austin) 2016, 4(2):e1244031.[PMID: 28090421]
6.Rouleau S et al: 3' UTR G-quadruplexes regulate miRNA binding. RNA 2017, 23(8):1172-1179.[PMID: 28473452]
7.Ma Y et al: RNA G-Quadruplex within the 5'-UTR of FEN1 Regulates mRNA Stability under Oxidative Stress. Antioxidants (Basel) 2023, 12(2).[PMID: 36829835]
8.Yoshida A et al: Recognition of G-quadruplex RNA by a crucial RNA methyltransferase component, METTL14. Nucleic Acids Res 2022, 50(1):449-457.[PMID: 34908152]
9.Jara-Espejo M, Fleming AM, Burrows CJ: Potential G-Quadruplex Forming Sequences and N(6)-Methyladenosine Colocalize at Human Pre-mRNA Intron Splice Sites. ACS Chem Biol 2020, 15(6):1292-1300.[PMID: 32396327]
10.Anastasakis DG et al: Nuclear PKM2 binds pre-mRNA at folded G-quadruplexes and reveals their gene regulatory role. Mol Cell 2024, 84(19):3775-3789 e3776.[PMID: 39153475]
11.Kharel P, Ivanov P: PKM2-G-quadruplex interactions conspire to regulate the cancer transcriptome. Mol Cell 2024, 84(19):3574-3575.[PMID: 39366344]
12.Matsuo K et al: RNA G-quadruplexes form scaffolds that promote neuropathological alpha-synuclein aggregation. Cell 2024, 187(24):6835-6848 e6820.[PMID: 39426376]