The invention relates to pharmaceutical compositions comprising α-Gal BOEL for use in treating patients with tumours. The invention also relates to methods of treating tumours using said compositions. The invention discloses that following intratumoural injection of α- Gal BOEL, binding of the natural anti-Gal antibody to de novo expressed tumoural α-Gal epitopes induces inflammation resulting in an anti-Gal antibody mediated opsonization of tumour cells and their uptake by antigen presenting cells. These antigen presenting cells migrate to draining lymph nodes and activate tumour specific T cells thereby converting the treated tumour lesions into in situ autologous tumour vaccines. This therapy can be applied to patients with multiple lesions and in neo-adjuvant therapy to patients before tumour resection. In addition to the regression and/or destruction of the treated tumour, such a vaccine will help in the immune mediated destruction of micrometastases that are not detectable during the removal of the treated tumour. The invention further teaches the enhancement of anti-tumour α-Gal BOEL treatment by the use of antibodies that inhibit the activity of immunological checkpoints molecules.
本发明涉及含有α-Gal BOEL的制药组合物,用于治疗患有肿瘤的患者。本发明还涉及使用该组合物治疗肿瘤的方法。本发明揭示了在α-Gal BOEL肿瘤内注射后,天然抗-Gal
抗体与新表达的肿瘤α-Gal表位结合,引起炎症反应,导致抗-Gal
抗体介导的肿瘤细胞被吞噬并被抗原呈递细胞摄取。这些抗原呈递细胞迁移到淋巴结并激活肿瘤特异性T细胞,从而将治疗的肿瘤病灶转化为原位自体肿瘤疫苗。该疗法可应用于具有多个病灶的患者以及在肿瘤切除前的新辅助疗法中。除了治疗的肿瘤的回归和/或破坏外,这样的疫苗还有助于免疫介导破坏在治疗的肿瘤切除期间无法检测到的微小转移灶。本发明还教导了通过使用抑制免疫检查点分子活性的
抗体来增强抗肿瘤α-Gal BOEL治疗的方法。