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Journal of Physiology and Biochemistry

, Volume 74, Issue 1, pp 25–33 | Cite as

The differential expression of novel circular RNAs in an acute lung injury rat model caused by smoke inhalation

  • Zhiqiang Ye
  • Xuhui Liu
  • Yuewu Yang
  • Xianling Zhang
  • Ting Yu
  • Shigeng Li
  • Yawei Feng
  • Gangjian LuoEmail author
Original Article

Abstract

Acute lung injury caused by smoke inhalation is a common severe clinical syndrome. This study aimed to investigate the potential expression of circular RNAs during acute lung injury triggered by smoke inhalation. The acute lung injury rat model was established with smoke inhalation from a self-made smoke generator. The occurrence of acute lung injury was validated by an analysis of the bronchoalveolar lavage fluid and hematoxylin-eosin (HE) staining of lung tissues. Next-generation sequencing and quantitative PCR were performed to identify the differentially expressed circular RNAs associated with acute lung injury that was caused by smoke inhalation. The circular form of the identified RNAs was finally verified by multiple RT-PCR-based assays. The bronchoalveolar lavage fluid (BALF) and lung tissue analysis showed that smoke inhalation successfully induced acute injury in rats, as evidenced by the significantly altered cell numbers, including macrophages, neutrophils, and red blood cells, disrupted cell lining, and increased levels of interleukin-1β, tumor necrosis factor-alpha, and IL-8 in lung tissues. Ten significantly differentially expressed circular RNAs were identified with next-generation sequencing and RT-PCR. The circular form of these RNAs was verified by multiple RT-PCR-based assays. In conclusion, the identified circular RNAs were prevalently and differentially expressed in rat lungs after acute lung injury caused by smoke inhalation.

Keywords

Acute lung injury Smoke inhalation Circular RNA Rat model 

Notes

Acknowledgements

This study was supported by Science and Technology Plan Projects of Guangdong Province (Nos. 2014A020212533 and 2014A020212707).

Compliance with ethical standards

All experiments were authorized by the Animal Care and Ethics Committee of Sun Yat-sen University.

Conflict of interest

The authors have no conflicts of interest to declare.

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Copyright information

© University of Navarra 2017

Authors and Affiliations

  • Zhiqiang Ye
    • 1
  • Xuhui Liu
    • 1
  • Yuewu Yang
    • 2
  • Xianling Zhang
    • 3
  • Ting Yu
    • 1
  • Shigeng Li
    • 1
  • Yawei Feng
    • 4
  • Gangjian Luo
    • 4
    Email author
  1. 1.Department of Emergency, The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouChina
  2. 2.Department of Traditional Chinese Medicine, The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouChina
  3. 3.Department of Hepatic Surgery, The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouChina
  4. 4.Department of Anesthesiology, The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouChina

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