4.3 Article

Mesenchymal Stem Cells Shed Amphiregulin at the Surface of Lung Carcinoma Cells in a Juxtacrine Manner

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NEOPLASIA
卷 17, 期 7, 页码 552-563

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ELSEVIER SCIENCE INC
DOI: 10.1016/j.neo.2015.07.002

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资金

  1. Fonds National de la Recherche Scientifique (Belgium)
  2. Fondation contre le Cancer (Foundation of Public Interest, Belgium)
  3. Fonds speciaux de la Recherche (University of Liege)
  4. Centre Anticancereux pres l'Universite de Liege
  5. Fonds Leon Fredericq (University of Liege)
  6. Interuniversity Attraction Poles Programme-Belgian Science Policy (Brussels, Belgium)
  7. Plan National Cancer (Service Public Federal)
  8. Actions de Recherche Concertees (University of Liege, Belgium)
  9. Televie-Fonds National de la Recherche Scientifique grant

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Solid tumors comprise cancer cells and different supportive stromal cells, including mesenchymal stem cells (MSCs), which have recently been shown to enhance tumor growth and metastasis. We provide new mechanistic insights into how bone marrow (BM)-derived MSCs co-injected with Lewis lung carcinoma cells promote tumor growth and metastasis in mice. The proinvasive effect of BM-MSCs exerted on tumor cells relies on an unprecedented juxtacrine action of BM-MSC, leading to the trans-shedding of amphiregulin (AREG) from the tumor cell membrane by tumor necrosis factor-alpha-converting enzyme carried by the BM-MSC plasma membrane. The released soluble AREG activates cancer cells and promotes their invasiveness. This novel concept is supported by the exploitation of different 2D and 3D culture systems and by pharmacological approaches using a tumor necrosis factor-alpha-converting enzyme inhibitor and AREG-blocking antibodies. Altogether, we here assign a new function to BM-MSC in tumor progression and establish an uncovered link between AREG and BM-MSC.

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