2. Academic Validation
  3. Proteomics provides insights into the inhibition of Chinese hamster V79 cell proliferation in the deep underground environment

Proteomics provides insights into the inhibition of Chinese hamster V79 cell proliferation in the deep underground environment

  • Sci Rep. 2020 Sep 10;10(1):14921. doi: 10.1038/s41598-020-71154-z.
Jifeng Liu 1 2,  Tengfei Ma 1 2,  Mingzhong Gao 3,  Yilin Liu 4,  Jun Liu 1,  Shichao Wang 2,  Yike Xie 2,  Ling Wang 2,  Juan Cheng 2,  Shixi Liu 5,  Jian Zou 6 7,  Jiang Wu 2,  Weimin Li 2,  Heping Xie 2 3 8
Affiliations

Affiliations

  • 1 Department of Otolaryngology Head and Neck Surgery, West China Hospital, Sichuan University, No. 37 Guoxuexiang, Chengdu, China.
  • 2 Deep Underground Space Medical Center, West China Hospital, Sichuan University, Chengdu, China.
  • 3 College of Water Resources & Hydropower, Sichuan University, Chengdu, China.
  • 4 Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China.
  • 5 Department of Otolaryngology Head and Neck Surgery, West China Hospital, Sichuan University, No. 37 Guoxuexiang, Chengdu, China. [email protected].
  • 6 Department of Otolaryngology Head and Neck Surgery, West China Hospital, Sichuan University, No. 37 Guoxuexiang, Chengdu, China. [email protected].
  • 7 Deep Underground Space Medical Center, West China Hospital, Sichuan University, Chengdu, China. [email protected].
  • 8 Institute of Deep Earth Science and Green Energy, Shenzhen University, Shenzhen, China.
PMID: 32913333 DOI: 10.1038/s41598-020-71154-z
Abstract

As resources in the shallow depths of the earth exhausted, people will spend extended periods of time in the deep underground space. However, little is known about the deep underground environment affecting the health of organisms. Hence, we established both deep underground laboratory (DUGL) and above ground laboratory (AGL) to investigate the effect of environmental factors on organisms. Six environmental parameters were monitored in the DUGL and AGL. Growth curves were recorded and tandem mass tag (TMT) proteomics analysis were performed to explore the proliferative ability and differentially abundant proteins (DAPs) in V79 cells (a cell line widely used in biological study in DUGLs) cultured in the DUGL and AGL. Parallel Reaction Monitoring was conducted to verify the TMT results. γ ray dose rate showed the most detectable difference between the two laboratories, whereby γ ray dose rate was significantly lower in the DUGL compared to the AGL. V79 cell proliferation was slower in the DUGL. Quantitative proteomics detected 980 DAPs (absolute fold change ≥ 1.2, p < 0.05) between V79 cells cultured in the DUGL and AGL. Of these, 576 proteins were up-regulated and 404 proteins were down-regulated in V79 cells cultured in the DUGL. KEGG pathway analysis revealed that seven pathways (e.g. ribosome, RNA transport and oxidative phosphorylation) were significantly enriched. These data suggest that proliferation of V79 cells was inhibited in the DUGL, likely because cells were exposed to reduced background radiation. The apparent changes in the proteome profile may have induced cellular changes that delayed proliferation but enhanced survival, rendering V79 cells adaptable to the changing environment.

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