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RNPC1 inhibits non-small cell lung cancer progression via regulating miR-181a/CASC2 axis

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Abstract

Objectives

To study the roles and mechanisms of RNA binding protein RNPC1 in non-small cell lung cancer progression.

Results

RNPC1 and long non-coding RNA CASC2 expression levels were significantly downregulated in lung cancer tissues compared with normal adjacent tissues, and their expression levels were positively correlated. Functionally, overexpression of RNPC1 or CASC2 inhibited non-small cell lung cancer cells proliferation, migration and invasion, and promoted cells apoptosis. Mechanistically, RNPC1 was found to harbor binding sites on CASC2 and directly bound to CASC2, and increased CASC2 mRNA stability and expression. Notably, the promotive effects of RNPC1 on CASC2 expression were attenuated by miR-181a overexpression. Moreover, CASC2 3′UTR with mutated miR-181a binding sites did not respond to RNPC1 alteration. Finally, the inhibitory effects of RNPC1 overexpression were attenuated or even reversed by CASC2 knockdown or miR-181a overexpression.

Conclusions

RNA bind protein RNPC1 could inhibit non-small cell lung cancer progression by competitively binding to CASC2 with miR-181a.

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Supporting information

Supplementary Table 1—PCR primer sequences.

Author information

Author notes

  1. Limin Yang and Yu Zhang have contributed equally to this work.

Authors and Affiliations

  1. Department of Respiratory and Critical Medicine, The First Affiliated Hospital of Soochow University, Suzhou, 215000, China

    Limin Yang, Chunhua Ling & Wei Heng

  2. Department of Respiratory Medicine, Wuxi Ninth People’s Hospital, Wuxi, 214000, China

    Yu Zhang

Authors
  1. Limin Yang
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  2. Yu Zhang
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  3. Chunhua Ling
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  4. Wei Heng
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Corresponding authors

Correspondence to Chunhua Ling or Wei Heng.

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The authors declare no conflict of interest.

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Yang, L., Zhang, Y., Ling, C. et al. RNPC1 inhibits non-small cell lung cancer progression via regulating miR-181a/CASC2 axis. Biotechnol Lett 40, 543–550 (2018). https://doi.org/10.1007/s10529-017-2504-1

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  • DOI: https://doi.org/10.1007/s10529-017-2504-1

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