Abstract：
:Rhabdomyosarcomas are the most frequent malignant soft tissue tumors of childhood; however, because current multimodality treatments fail to improve the poor survival rate of children with metastatic rhabdomyosarcoma, new treatments are required. We previously identified the gamma-subunit of the fetal acetylcholine receptor (fAChR) as a specific cell surface target in rhabdomyosarcoma. Here, we engineered human T lymphocytes to express chimeric receptors composed of the antigen-binding domain of a human anti-fAChR antibody joined to the signaling domain of the human T-cell receptor zeta-chain. The interaction of fAChRzeta-transduced T cells with fAChR-positive rhabdomyosarcoma cell lines, but not with fAChR-negative control cells, induced T-cell activation characterized by strong secretion of IFN-gamma and delayed lysis of tumor cells. Importantly, we found that in six of six rhabdomyosarcoma patients, chemotherapy increased fAChR expression on residual tumor cells in vivo. Our observations suggest that these fully human chimeric fAChRzeta-transduced T cells, which should be well tolerated by the patient, have potential use in vivo both as a primary treatment for rhabdomyosarcoma and as a complementary approach to eradicate residual tumor cells after chemotherapy.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Gattenlöhner S,Marx A,Markfort B,Pscherer S,Landmeier S,Juergens H,Müller-Hermelink HK,Matthews I,Beeson D,Vincent A,Rossig Cdoi
10.1158/0008-5472.CAN-05-0542subject
Has Abstractpub_date
2006-01-01 00:00:00pages
24-8issue
1eissn
0008-5472issn
1538-7445pii
66/1/24journal_volume
66pub_type
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