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Fan XJ, Huang Y, Wu PH, et al. Impact of Cold Ischemic Time and Freeze-Thaw Cycles on RNA, DNA and Protein Quality in Colorectal Cancer Tissues Biobanking. J Cancer. 2019;10(20):4978-4988doi: 10.7150/jca.29372.
Fan, X. J., Huang, Y., Wu, P. H., Yin, X. K., Yu, X. H., Fu, X. H., Feng, L. L., Wang, Y. L., Yi, H. J., Chen, Z. T., Yin, J. X., Zhang, D. L., Feng, W. X., Bai, S. M., Kim, T., Mills, G. B., Lu, Y. L., Wan, X. B., & Wang, L. (2019). Impact of Cold Ischemic Time and Freeze-Thaw Cycles on RNA, DNA and Protein Quality in Colorectal Cancer Tissues Biobanking. Journal of Cancer, 10(20), 4978-4988. https://doi.org/10.7150/jca.29372
Fan, Xin-Juan, et al. "Impact of Cold Ischemic Time and Freeze-Thaw Cycles on RNA, DNA and Protein Quality in Colorectal Cancer Tissues Biobanking." Journal of Cancer vol. 10,20 (2019): 4978-4988. doi: https://doi.org/10.7150/jca.29372
Fan XJ, Huang Y, Wu PH, Yin XK, Yu XH, Fu XH, Feng LL, Wang YL, Yi HJ, Chen ZT, Yin JX, Zhang DL, Feng WX, Bai SM, Kim T, Mills GB, Lu YL, Wan XB, Wang L. Impact of Cold Ischemic Time and Freeze-Thaw Cycles on RNA, DNA and Protein Quality in Colorectal Cancer Tissues Biobanking. J Cancer. 2019 Aug 27;10(20):4978-4988. doi: 10.7150/jca.29372. eCollection 2019. PMID: 31598170; PMCID: PMC6775519.
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J Cancer. 2019 Aug 27;10(20):4978-4988. doi: 10.7150/jca.29372. eCollection 2019.

Impact of Cold Ischemic Time and Freeze-Thaw Cycles on RNA, DNA and Protein Quality in Colorectal Cancer Tissues Biobanking.

Journal of Cancer

Xin-Juan Fan, Yan Huang, Pei-Huang Wu, Xin-Ke Yin, Xi-Hu Yu, Xin-Hui Fu, Li-Li Feng, Yun-Long Wang, Hong-Jun Yi, Zhi-Ting Chen, Jun-Xiang Yin, Da-Lu Zhang, Wei-Xing Feng, Shao-Mei Bai, Taewan Kim, Gordon B Mills, Yi-Ling Lu, Xiang-Bo Wan, Lei Wang

Affiliations

  1. Guangdong Institute of Gastrointestinal, Guangzhou, Guangdong, China.
  2. Department of Pathology, the Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China.
  3. Department of Gastrointestinal Surgery, the Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China.
  4. China National Center for Biotechnology Development, Beijing, China.
  5. The Ohio State University Comprehensive Cancer Center, Columbus, Ohio, USA.
  6. Department of Systems Biology, Division of Basic Science Research, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
  7. Department of Radiation Oncology, the Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China.

PMID: 31598170 PMCID: PMC6775519 DOI: 10.7150/jca.29372

Abstract

Tissue-derived RNA, DNA and protein samples become more and more crucial for molecular detection in clinical research, personalized and targeted cancer therapy. This study evaluated how to biobanking colorectal tissues through examining the influences of cold ischemic time and freeze-thaw cycles on RNA, DNA and protein integrity. Here, 144 pairs of tumor and normal colorectal tissues were used to investigate the impact of cold ischemic times (0-48h) on RNA, DNA and protein integrity at on ice or room temperature conditions. Additionally, 45 pairs of tissues experienced 0-9 freeze-thaw cycles, and then the RNA, DNA and protein quality were analyzed. On ice, RNA, DNA and protein from colorectal tumor and normal tissues were all stable up to 48h after surgery. At room temperature, RNA in colorectal tumor and normal tissues began to degrade at 8h and 24h, respectively. Meanwhile, the tumor tissues DNA degradation occurred at 24h after surgery at room temperature. Similarly, the protein expression level of tumor and normal tissues began to change at 24h after the surgery at room temperature. Interestingly, tissue RNA and DNA remained stable even after 9 freeze-thaw cycles, whereas the proteins levels were remarkably changed after 7 freeze-thaw cycles. This study provided a useful evidence on how to store human colorectal tissues for biobanking. Preserving the surgical colorectal tissue on ice was an effective way to prevent RNA, DNA and protein degradation. Importantly, more than 7 repeated freeze-thaw cycles were not recommended for colorectal tissues.

© The author(s).

Keywords: DNA integrity; RNA integrity; colorectal tissue bank; protein expression.; quality control

Conflict of interest statement

Competing Interests: The authors have declared that no competing interest exists.

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