近红外光免疫疗法(NIR-PIT):治疗恶性胸膜间皮瘤的曙光

2020-06-22 Allan MedSci原创

NIR-PIT是一种安全的光疗法,可以靶向受肿瘤影响的区域。

恶性胸膜间皮瘤(MPM)是一种罕见肿瘤,会影响肺内膜。MPM很少扩散到身体的其他部位,但通常患者被确诊时已处于晚期,导致预后不良和治疗选择非常有限。日本名古屋大学Kazuhide Sato及其同事研究了近红外光免疫疗法(NIR-PIT)治疗MPM的有效性。NIR-PIT已被美国FDA快速批准用于治疗一种恶性头颈部肿瘤。为了使NIR-PIT起作用,必须首先注射靶向肿瘤细胞的化合物。该化合物由靶向癌细胞上特定结构的抗体和称为IR700的光吸收剂组成。当近红外光照射到受癌症影响的身体部位时,该化合物聚集在癌细胞膜上,导致急性细胞破裂和肿瘤死亡。

为了使NIR-PIT用于MPM,科学家需要一种专门针对MPM癌细胞的化合物。他们将注意力集中在一种名为NZ-1的抗体上,该抗体能够靶向跨膜糖蛋白Podoplanin的特定部分。Podoplanin通常存在于人体的许多细胞类型中,但在某些类型的癌细胞(包括MPM)中尤其丰富。

Kazuhide Sato表示:“肺和胸腔含有大量空气,因此可以有效地传输近红外光。NIR-PIT是一种安全的光疗法,可以靶向受肿瘤影响的区域。在没有近红外光照射的情况下,抗体-IR700偶联物对人体是无毒的”。

 

原始出处:

https://www.firstwordpharma.com/node/1734365?tsid=4

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    2020-12-23 yangpeizhi
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    2021-01-06 lifestar
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    2020-06-22 牛顿爱吃苹果

    学习了

    0

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