Involvement of lncRNA-HOTTIP in the Repair of Ultraviolet Light-Induced DNA Damage in Spermatogenic Cells
Meng Liang* and Ke Hu
Department of Biotechnology, School of Life Science, Bengbu Medical College, Bengbu 233030, China
Received April 8, 2019; Revised August 21, 2019; Accepted September 17, 2019.; Published online November 7, 2019.
© Korean Society for Molecular and Cellular Biology. All rights reserved.

Ultraviolet light (UV)-induced cellular response has been studied by numerous investigators for many years. Long noncoding RNAs (lncRNAs) are emerging as new regulators of diverse cellular process; however, little is known about the role of lncRNAs in the cellular response to UV treatment. Here, we demonstrate that levels of lncRNA-HOTTIP significantly increases after UV stimulation and regulates the UV-mediated cellular response to UV through the coordinate activation of its neighboring gene Hoxa13 in GC-1 cells (spermatogonia germ cell line). UV-induced, G2/M-phase arrest and early apoptosis can be regulated by lncRNA-HOTTIP and Hoxa13. Furthermore, lncRNA-HOTTIP can up-regulate γ-H2AX and p53 expression via Hoxa13 in UV-irradiated GC-1 cells. In addition, p53 has the ability to regulate the expression of both lncRNA-HOTTIP and Hoxa13 in vitro and in vivo. Our results provide new data regarding the role lncRNAs play in the UV response in spermatogenic cells.
Keywords: DNA damage, HOTTIP, Hoxa13, spermatogenic cell, ultraviolet light
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31 October 2019 Volume 42,
Number 10, pp. 687~738

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