Systematic name M10967
Brief description The metastasis gene signature: genes up-regulated during metastasis of NSCLC (non-small cell lung carcinoma) tumors to bone.
Full description or abstract Bone is a frequent target of lung cancer metastasis, which is associated with significant morbidity and a dismal prognosis. To identify and functionally characterize genes involved in the mechanisms of osseous metastasis, we developed a murine lung cancer model. Comparative transcriptomic analysis identified genes encoding signaling molecules (such as TCF4 and PRKD3) and cell anchorage-related proteins (MCAM and SUSD5), some of which were basally modulated by transforming growth factor-beta (TGF-beta) in tumor cells and in conditions mimicking tumor-stromal interactions. Triple gene combinations induced not only high osteoclastogenic activity but also a marked enhancement of global metalloproteolytic activities in vitro. These effects were strongly associated with robust bone colonization in vivo, whereas this gene subset was ineffective in promoting local tumor growth and cell homing activity to bone. Interestingly, global inhibition of metalloproteolytic activities and simultaneous TGF-beta blockade in vivo led to increased survival and a remarkable attenuation of bone tumor burden and osteolytic metastasis. Thus, this metastatic gene signature mediates bone matrix degradation by a dual mechanism of induction of TGF-beta-dependent osteoclastogenic bone resorption and enhancement of stroma-dependent metalloproteolytic activities. Our findings suggest the cooperative contribution of host-derived and cell autonomous effects directed by a small subset of genes in mediating aggressive osseous colonization.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 18381434   Authors: Vicent S,Luis-Ravelo D,Antón I,García-Tuñón I,Borrás-Cuesta F,Dotor J,De Las Rivas J,Lecanda F
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