PBC:索拉菲尼可降低神经母细胞瘤生长速度

2012-09-07 ecoliDh5 丁香园

视网膜母细胞瘤高危患儿亟需得到更有效的治疗方法。由于临床前研究已经证明,阻断血管再生的药物可以抑制神经母细胞瘤生长。因此来自芝加哥大学的Nisha C. Kakodkar博士等人提出一种假设,即靶点为神经母细胞瘤细胞和肿瘤血管生成的药物可能具有抑制肿瘤的活性。他们对一种多激酶抑制剂-索拉菲尼对神经母细胞瘤细胞增殖及信号传导的影响进行了试验,试验对象为皮下异种移植人类神经母细胞瘤或原位肾上腺肿瘤的小

视网膜母细胞瘤高危患儿亟需得到更有效的治疗方法。由于临床前研究已经证明,阻断血管再生的药物可以抑制神经母细胞瘤生长。因此来自芝加哥大学的Nisha C. Kakodkar博士等人提出一种假设,即靶点为神经母细胞瘤细胞和肿瘤血管生成的药物可能具有抑制肿瘤的活性。他们对一种多激酶抑制剂-索拉菲尼对神经母细胞瘤细胞增殖及信号传导的影响进行了试验,试验对象为皮下异种移植人类神经母细胞瘤或原位肾上腺肿瘤的小鼠。其研究结果即将发表于《儿科血液肿瘤》(Pediatr Blood Cancer)杂志上.

研究人员对皮下异种移植人类神经母细胞瘤或原位肾上腺肿瘤的小鼠进行索拉菲尼治疗,同时对肿瘤的生长速度进行了测算。通过组织学方法,对治疗组和对照组神经母细胞瘤的血管结构和血管密度进行评价。他们还评价了索拉菲尼对神经母细胞瘤增殖、细胞周期及信号传导的体外影响。

研究发现,索拉菲尼可以抑制皮下异种移植人类神经母细胞瘤或原位肾上腺肿瘤的小鼠的肿瘤生长。同时发现,与对照组肿瘤相比,在治疗组中处于分裂周期的神经母细胞瘤细胞数目与肿瘤血管数目均出现减少,并且治疗组的肿瘤血管具有更多的正常结构。通过索拉菲尼治疗还可以降低神经母细胞瘤细胞增殖,衰减ERK信号传导,而且阻滞G1/G0细胞周期的作用也得到了增强。

该研究结果表明,通过靶向于神经母细胞瘤细胞及肿瘤血管,索拉菲尼可以抑制神经母细胞瘤的生长。而在将来的神经母细胞瘤临床II期研究中,他们将会对索拉菲尼单剂进行进一步评价

链接:

Kakodkar NC Peddinti RR Tian Y Guerrero LJ Chlenski A Yang Q Salwen HR Maitland ML Cohn SL Departments of Pediatrics, University of Chicago, Chicago, IL.Sorafenib inhibits neuroblastoma cell proliferation and signaling, blocks angiogenesis, and impairs tumor growth.Pediatr Blood Cancer 2012 59 4 :642-7

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    2013-03-11 liuyong2980
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    2013-07-12 yahu
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