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      1. Author :
        Huber-Ruano, I.; Raventós, C.; Cuartas, I.; Sánchez-Jaro, C.; Arias, A.; Parra, J. L.; Wosikowski, K.; Janicot, M.; Seoane, J.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2017
      5. Publication :
        Annals of Oncology
      6. Products :
      7. Volume :
        28
      8. Issue :
        9
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        TGF-β; lung metastasis; tumor-associated macrophages; CD86; antisense oligonucleotides; tumor microenvironment; IVIS
      12. Abstract :
        BackgroundThe transforming growth factor (TGF)-β pathway is a well-described inducer of immunosuppression and can act as an oncogenic factor in advanced tumors. Several preclinical and clinical studies show that the TGF-β pathway can be considered a promising molecular target for cancer therapy. The human genome has three TGF-β isoforms and not much is known about the oncogenic response to each of the isoforms. Here, we studied the antitumor response to ISTH0047, a recently developed locked nucleic acid-modified antisense oligonucleotide targeting TGF-β2.Materials and methodsWe have studied the anticancer response to ISTH0047 using gymnotic delivery in tumor cell cultures and in in vivo preclinical orthotopic mouse models for primary tumors (breast and kidney tumors) and lung metastasis.ResultsWe observed that ISTH0047 is able to significantly reduce TGF-β2 mRNA and protein levels without altering the levels of TGF-β1 and TGF-β3. ISTH0047 prevented lung metastasis in syngeneic orthotopic renal cell carcinoma (RENCA) and breast cancer (4T1) tumor models. In addition, using an orthotopic xenograft model of a lung cancer cell line (CRL5807) that mainly expresses TGF-β2, we observed that ISTH0047 had an important effect on the lung microenvironment inhibiting the growth of lung lesions. ISTH0047 treatment re-educated macrophages in the lung parenchyma to express the tumor-suppressive factor, CD86.ConclusionOverall, our data point to TGF-β2 as a therapeutic target and ISTH0047 as a novel anticancer drug to prevent lung metastasis by impacting on the tumor niche, in part, through the induction of CD86 in tumor-associated macrophages.
      13. URL :
        http://dx.doi.org/10.1093/annonc/mdx314 https://academic.oup.com/annonc/article-abstract/28/9/2278/4004846/An-antisense-oligonucleotide-targeting-TGF-2?redirectedFrom=fulltext
      14. Call Number :
        PKI @ catherine.lautenschlager @ 14123
      15. Serial :
        14027