Monoclonal antibodies targeting non-small cell lung cancer stem-like cells by multipotent cancer stem cell monoclonal antibody library

  • Authors:
    • Kaiyue Cao
    • Yunzhi Pan
    • Long Yu
    • Xiong Shu
    • Jing Yang
    • Linxin Sun
    • Lichao Sun
    • Zhihua Yang
    • Yuliang Ran
  • View Affiliations

  • Published online on: December 22, 2016     https://doi.org/10.3892/ijo.2016.3818
  • Pages: 587-596
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Abstract

Cancer stem cells (CSCs) are a rare subset of cancer cells that play a significant role in cancer initiation, spreading, and recurrence. In this study, a subpopulation of lung cancer stem-like cells (LCSLCs) was identified from non-small cell lung carcinoma cell lines, SPCA-1 and A549, using serum-free suspension sphere-forming culture method. A monoclonal antibody library was constructed using immunized BLAB/c mice with the multipotent CSC cell line T3A-A3. Flow cytometry analysis showed that 33 mAbs targeted antigens can be enriched in sphere cells compared with the parental cells of SPCA-1 and A549 cell lines. Then, we performed functional antibody screening including sphere-forming inhibiting and invasion inhibiting assay. The results showed that two antibodies, 12C7 and 9B8, notably suppressed the self-renewal and invasion of LCSLCs. Fluorescence-activated cell sorting (FACs) found that the positive cells recognized by mAbs, 12C7 or 9B8, displayed features of LCSLCs. Interestingly, we found that these two antibodies recognized different subsets of cells and their combination effect was superior to the individual effect both in vitro and in vivo. Tissue microarrays were applied to detect the expression of the antigens targeted by these two antibodies. The positive expression of 12C7 and 9B8 targeted antigen was 84.4 and 82.5%, respectively, which was significantly higher than that in the non-tumor lung tissues. In conclusion, we screened two potential therapeutic antibodies that target different subsets of LCSLCs.
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February-2017
Volume 50 Issue 2

Print ISSN: 1019-6439
Online ISSN:1791-2423

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Spandidos Publications style
Cao K, Pan Y, Yu L, Shu X, Yang J, Sun L, Sun L, Yang Z and Ran Y: Monoclonal antibodies targeting non-small cell lung cancer stem-like cells by multipotent cancer stem cell monoclonal antibody library. Int J Oncol 50: 587-596, 2017.
APA
Cao, K., Pan, Y., Yu, L., Shu, X., Yang, J., Sun, L. ... Ran, Y. (2017). Monoclonal antibodies targeting non-small cell lung cancer stem-like cells by multipotent cancer stem cell monoclonal antibody library. International Journal of Oncology, 50, 587-596. https://doi.org/10.3892/ijo.2016.3818
MLA
Cao, K., Pan, Y., Yu, L., Shu, X., Yang, J., Sun, L., Sun, L., Yang, Z., Ran, Y."Monoclonal antibodies targeting non-small cell lung cancer stem-like cells by multipotent cancer stem cell monoclonal antibody library". International Journal of Oncology 50.2 (2017): 587-596.
Chicago
Cao, K., Pan, Y., Yu, L., Shu, X., Yang, J., Sun, L., Sun, L., Yang, Z., Ran, Y."Monoclonal antibodies targeting non-small cell lung cancer stem-like cells by multipotent cancer stem cell monoclonal antibody library". International Journal of Oncology 50, no. 2 (2017): 587-596. https://doi.org/10.3892/ijo.2016.3818