Serine 207 phosphorylated lysyl-tRNA synthetase predicts disease-free survival of non-small-cell lung carcinoma

Suliman Boulos, Min Chul Park, Marian Zeibak, Shen Yun Foo, Yoon Kyung Jeon, Young Tae Kim, Alex Motzik, Sagi Tshori, Tamar Hamburger, Sunghoon Kim, Hovav Nechushtan, Ehud Razin

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7 Citations (Scopus)


It has been shown that various tRNA synthetases exhibit non-canonical activities unrelated to their original role in translation. We have previously described a signal transduction pathway in which serine 207 phosphorylated lysyl-tRNA synthetase (P-s207 LysRS) is released from the cytoplasmic multi-tRNA synthetase complex (MSC) into the nucleus, where it activates the transcription factor MITF in stimulated cultured mast cells and cardiomyocytes. Here we describe a similar transformation of LysRS due to EGFR signaling activation in human lung cancer. Our data shows that activation of the EGFR results in phosphorylation of LysRS at position serine 207, its release from the MSC and translocation to the nucleus. We then generated a P-s207 LysRS rabbit polyclonalantibody and tested 242 tissue micro-array samples derived from non-small-cell lung cancer patients. Highly positive nuclear staining for P-s207 LysRS was noted in patients with EGFR mutations as compared to WT EGFR patients and was associated with improved mean disease-free survival (DFS). In addition, patients with mutated EGFR and negative lymph node metastases had better DFS when P-s207 LysRS was present in the nucleus. The data presented strongly suggests functional and prognostic significance of P-s207 LysRS in non-small-cell lung cancer.

Original languageEnglish
Pages (from-to)65186-65198
Number of pages13
Issue number39
Publication statusPublished - 2017

Bibliographical note

Publisher Copyright:
© Boulos et al.

All Science Journal Classification (ASJC) codes

  • Oncology


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