Identification of differentially expressed lncRNAs involved in transient regeneration of the neonatal C57BL/6J mouse heart by next-generation high-throughput RNA sequencing
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Yu-Mei Chen1,*, Hua Li2,*, Yi Fan2, Qi-Jun Zhang2, Xing Li2, Li-Jie Wu2, Zi-jie Chen2, Chun Zhu3, Ling-Mei Qian2
1Department of Emergency, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
2Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, P. R. China
3Department of Pediatrics, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu 210004, P. R. China
*These authors contributed equally to this work
Ling-Mei Qian, email: email@example.com
Chun Zhu, email: firstname.lastname@example.org
Keywords: neonatal mouse, heart, regeneration, lncRNAs
Received: August 15, 2016 Accepted: February 20, 2017 Published: March 03, 2017
Previous studies have shown that mammalian cardiac tissue has a regenerative capacity. Remarkably, neonatal mice can regenerate their cardiac tissue for up to 6 days after birth, but this capacity is lost by day 7. In this study, we aimed to explore the expression pattern of long noncoding RNA (lncRNA) during this period and examine the mechanisms underlying this process. We found that 685 lncRNAs and 1833 mRNAs were differentially expressed at P1 and P7 by the next-generation high-throughput RNA sequencing. The coding genes associated with differentially expressed lncRNAs were mainly involved in metabolic processes and cell proliferation, and also were potentially associated with several key regeneration signalling pathways, including PI3K-Akt, MAPK, Hippo and Wnt. In addition, we identified some correlated targets of highly-dysregulated lncRNAs such as Igfbp3, Trnp1, Itgb6, and Pim3 by the coding-noncoding gene co-expression network. These data may offer a reference resource for further investigation about the mechanisms by which lncRNAs regulate cardiac regeneration.
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