Research Project
Grant-in-Aid for Scientific Research (C)
[Background] Small cell lung cancer (SCLC) possesses high tendency to disseminate. However, SCLC patients with paraneoplastic syndrome mediated by immunity against onconeural antigens remain in limited-stage disease (LD) without distant metastases. We previously reported that DEAD/H (Asp-Glu-Ala-Asp/His) box polypeptide 3, X-linked (DDX3X) is an immunogenic protein preferentially expressed in CD133+ murine melanoma cells exhibiting biological CSC features. [Results] Five of 15 LD-SCLC patients possessed DDX3X-responsive effector T cells. CD4+ effector T cells obtained from peripheral blood of 5 LD-SCLC secreted significantly more IFNgamma upon DDX3X antigen stimulation in the presence of CD11c+ autologous dendritic cells. effector T cells from one LD-SCLC patient responded to DDX3X. In contrast, effector T cells obtained from ED-SCLC patients or healthy volunteers never responded to DDX3X. DDX3X-primed CD4+ T cells mediated potent antitumor therapeutic efficacy in murine models.
All 2013 2012 2011
All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (6 results) Patent(Industrial Property Rights) (2 results) (of which Overseas: 2 results)
Cancer Immunol Immunother
Volume: 62 Issue: 10 Pages: 1619-28
10.1007/s00262-013-1467-x
PLoS ONE
Volume: 8 Issue: 5 Pages: e62104-e62104
10.1371/journal.pone.0062104
Clin Exp Allergy
Volume: 42 Issue: 6 Pages: 946-957
10.1111/j.1365-2222.2012.04006.x
Vaccine
Volume: 30 Issue: 43 Pages: 6190-7
10.1016/j.vaccine.2012.07.060
Blood
Volume: 120 Issue: 12 Pages: 2417-27
10.1182/blood-2012-02-411124
Volume: 11 Issue: 11 Pages: 1597-608
10.1007/s00262-011-1063-x
BMC Cancer
Volume: 11 Issue: 1 Pages: 1-1
10.1186/1471-2407-11-1