Resistance of randomly dispersed and oxygen-starved lung tumor cells to chemo- and radiotherapy constitutes the vast majority recurrences and death from lung cancer. We use sickle cells derived from humans with sickle cell anemia to target oxygen-deprived tumor cells that persist and multiply after conventional treatment. Transfused sickle cells selectively occluded tumor microvessels and shut down blood flow to these oxygen-deprived pockets leading to tumor cell death and complete shrinkage of aggressive lung tumors. Combining the sickle cells with a vascular disrupting agents and radiation injure and narrow tumor blood vessels, amplified the scale of sickle cell-induced blood vessel closure and tumor cell killing. The strength of the tumor killing produced by this combination exceeded that of either agent alone or combined with conventional anti-angiogenics, chemotherapy or radiation. Combinatorial sickle cells-Combretastatin treatment thereby constitutes a major advance toward eradicating treatment-resistant tumor cells and reducing the frequency of lung cancer recurrence.
随机分散和缺氧的肺肿瘤细胞对化疗和放疗的抵抗力是肺癌复发和死亡的绝大部分原因。我们利用从镰状细胞性贫血患者身上提取的镰状细胞来靶向缺氧的肿瘤细胞,这些肿瘤细胞在常规治疗后仍会持续增殖。输注的镰状细胞选择性地堵塞肿瘤微血管,切断流向这些缺氧区域的血流,导致肿瘤
细胞死亡,侵袭性肺部肿瘤完全缩小。将镰状细胞与血管破坏剂和放射线结合使用,可损伤和缩小肿瘤血管,从而扩大镰状细胞诱导的血管封闭和肿瘤细胞杀伤的规模。这种组合对肿瘤的杀伤力超过了单独使用或与传统抗血管生成剂、化疗或放疗结合使用的任何一种药物。因此,镰状细胞-考布他丁联合疗法在消灭耐药肿瘤细胞和降低肺癌复发率方面取得了重大进展。