Tumor Biology

, Volume 37, Issue 4, pp 4755–4765 | Cite as

Secretome of human bone marrow mesenchymal stem cells: an emerging player in lung cancer progression and mechanisms of translation initiation

  • Oshrat Attar-Schneider
  • Victoria Zismanov
  • Liat Drucker
  • Maya Gottfried
Original Article


Non-small cell lung cancer (NSCLC) remains the most common cause of cancer-related death worldwide. Patients presenting with advanced-stage NSCLC have poor prognosis, while metastatic spread accounts for >70 % of patient’s deaths. The major advances in the treatment of lung cancer have brought only minor improvements in survival; therefore, novel strategic treatment approaches are urgently needed. Accumulating data allocate a central role for the cancer microenvironment including mesenchymal stem cells (MSCs) in acquisition of drug resistance and disease relapse. Furthermore, studies indicate that translation initiation factors are over expressed in NSCLC and negatively impact its prognosis. Importantly, translation initiation is highly modulated by microenvironmental cues. Therefore, we decided to examine the effect of bone marrow MSCs (BM-MSCs) from normal donors on NSCLC cell lines with special emphasis on translation initiation mechanism in the crosstalk. We cultured NSCLC cell lines with BM-MSC conditioned media (i.e., secretome) and showed deleterious effects on the cells’ proliferation, viability, death, and migration. We also demonstrated reduced levels of translation initiation factors implicated in cancer progression [eukaryotic translation initiation factor 4E (eIF4E) and eukaryotic translation initiation factor 4GI (eIF4GI)], their targets, and regulators. Finally, we outlined a mechanism by which BM-MSCs’ secretome affected NSCLC’s mitogen-activated protein kinase (MAPK) signaling pathway, downregulated the cell migration, and diminished translation initiation factors’ levels. Taken together, our study demonstrates that there is direct dialogue between the BM-MSCs’ secretome and NSCLC cells that manipulates translation initiation and critically affects cell fate. We suggest that therapeutic approach that will sabotage this dialogue, especially in the BM microenvironment, may diminish lung cancer metastatic spread and morbidity and improve the patient’s life quality.


NSCLC Human mesenchymal stem cells Translation initiation Migration eIF4E/eIF4GI 


Authors’ contribution

The authors’ contributions were as follows: Attar-Schneider and Zismanov were responsible for the conception and design of the study, acquisition, analysis and interpretation of data, and drafting the article. Drucker and Gottfried were responsible for the conception and design of the study and for final approval of the version to be submitted.

Compliance with ethical standards

Conflicts of interest


Supplementary material

13277_2015_4304_MOESM1_ESM.pdf (211 kb)
ESM 1 (PDF 210 kb)
13277_2015_4304_MOESM2_ESM.pdf (228 kb)
ESM 2 (PDF 227 kb)
13277_2015_4304_MOESM3_ESM.pdf (265 kb)
ESM 3 (PDF 264 kb)


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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  • Oshrat Attar-Schneider
    • 1
    • 2
    • 4
  • Victoria Zismanov
    • 1
    • 4
  • Liat Drucker
    • 2
    • 4
  • Maya Gottfried
    • 1
    • 3
    • 4
  1. 1.Lung Cancer ResearchMeir Medical CenterKfar SabaIsrael
  2. 2.Oncogenetic LaboratoriesMeir Medical CenterKfar SabaIsrael
  3. 3.Oncology Department, Lung Cancer UnitMeir Medical CenterKfar SabaIsrael
  4. 4.Sackler Faculty of MedicineTel Aviv University Ramat AvivTel AvivIsrael

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