Husain S R, Kreitman R J, Pastan I, Puri R K
Laboratory of Molecular Tumor Biology, Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, FDA, Bethesda, Maryland 20892, USA.
Nat Med. 1999 Jul;5(7):817-22. doi: 10.1038/10541.
The elusive and enigmatic origin of AIDS-associated Kaposi's sarcoma (AIDS-KS) makes it a complex tumor and therefore difficult to treat. Here we demonstrate that AIDS-KS cells express surface interleukin-4 (IL-4) receptors, and that IL-4 toxin (IL-4(38-37)-PE38KDEL) is specifically cytotoxic to these cells. Intratumoral, intraperitoneal and intravenous administration of IL-4 toxin in nude mice with established subcutaneous AIDS-KS tumors caused considerable anti-tumor activity in a dose-dependent manner, with highest dose producing durable complete responses. Metabolic changes, including cachexia and lymphopenia, induced by KS tumors were prevented by IL-4 toxin treatment. This report establishes IL-4(38-37)-PE38KDEL as an experimental therapeutic agent for the treatment of AIDS-KS.
与艾滋病相关的卡波西肉瘤(AIDS-KS)难以捉摸且神秘的起源使其成为一种复杂的肿瘤,因此难以治疗。在此我们证明,AIDS-KS细胞表达表面白细胞介素-4(IL-4)受体,并且IL-4毒素(IL-4(38-37)-PE38KDEL)对这些细胞具有特异性细胞毒性。在已建立皮下AIDS-KS肿瘤的裸鼠中进行瘤内、腹腔内和静脉内注射IL-4毒素,以剂量依赖方式引起了相当大的抗肿瘤活性,最高剂量产生了持久的完全缓解。IL-4毒素治疗可预防由KS肿瘤诱导的包括恶病质和淋巴细胞减少在内的代谢变化。本报告确立了IL-4(38-37)-PE38KDEL作为治疗AIDS-KS的一种实验性治疗药物。