Open Access

A nanobody targeting carcinoembryonic antigen as a promising molecular probe for non-small cell lung cancer

  • Authors:
    • Hao Wang
    • Ai‑Min Meng
    • Sheng‑Hua Li
    • Xiao‑Liang Zhou
  • View Affiliations

  • Published online on: June 1, 2017     https://doi.org/10.3892/mmr.2017.6677
  • Pages: 625-630
  • Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Carcinoembryonic antigen (CEA) is a biomarker and therapy target for non‑small cell lung cancer (NSCLC), which is the most common type of lung cancer. Nanobodies with high target specificity are promising candidates to function as anti‑CEA probes. In the present study, the targeting effects of an anti‑CEA nanobody obtained from phage display were investigated using technetium‑99 m (99mTc) and fluorescence labeling. In vitro binding and immunofluorescent staining assays, as well as in vivo blood clearance and biodistribution assays were performed. High specificity and affinity of the nanobody for CEA‑positive H460 cells was observed in vitro. The pharmacokinetics assay of the 99mTc‑nanobody in Wistar rats demonstrated that the nanobody had appropriate T1/2α and T1/2β, which were 20.2 and 143.5 min, respectively. The biodistribution assay using H460 xenograft‑bearing nude mice demonstrated a high ratio of signal in tumor compared with background, which confirmed that the nanobody may be useful as a molecular probe for CEA‑positive cancer, particularly in NSCLC.
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July-2017
Volume 16 Issue 1

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Wang H, Meng AM, Li SH and Zhou XL: A nanobody targeting carcinoembryonic antigen as a promising molecular probe for non-small cell lung cancer. Mol Med Rep 16: 625-630, 2017
APA
Wang, H., Meng, A., Li, S., & Zhou, X. (2017). A nanobody targeting carcinoembryonic antigen as a promising molecular probe for non-small cell lung cancer. Molecular Medicine Reports, 16, 625-630. https://doi.org/10.3892/mmr.2017.6677
MLA
Wang, H., Meng, A., Li, S., Zhou, X."A nanobody targeting carcinoembryonic antigen as a promising molecular probe for non-small cell lung cancer". Molecular Medicine Reports 16.1 (2017): 625-630.
Chicago
Wang, H., Meng, A., Li, S., Zhou, X."A nanobody targeting carcinoembryonic antigen as a promising molecular probe for non-small cell lung cancer". Molecular Medicine Reports 16, no. 1 (2017): 625-630. https://doi.org/10.3892/mmr.2017.6677