Blood:减少卡路里摄入或可改善血液肿瘤治疗应答

2013-09-03 佚名 睿医资讯

新近一项提示,在一定时间内限制卡路里摄入可增加癌症治疗的成功几率,提出了卡路里摄入影响癌症细胞程序性凋亡和癌症靶向治疗疗效的新数据。相关结果8月21日在线发表于Blood杂志。 既往研究显示,卡路里摄入与癌症进展间存在联系。但在卡路里摄入对癌症治疗疗效的影响方面,研究数据相当有限。研究者们提出假设:减少卡路里摄入可能有助于抑制蛋白质Mcl-1的过度表达,而这种蛋白质的

新近一项提示,在一定时间内限制卡路里摄入可增加癌症治疗的成功几率,提出了卡路里摄入影响癌症细胞程序性凋亡和癌症靶向治疗疗效的新数据。相关结果8月21日在线发表于Blood杂志。【原文下载

既往研究显示,卡路里摄入与癌症进展间存在联系。但在卡路里摄入对癌症治疗疗效的影响方面,研究数据相当有限。研究者们提出假设:减少卡路里摄入可能有助于抑制蛋白质Mcl-1的过度表达,而这种蛋白质的过度表达与某些癌症相关。

为了更好理解限制卡路里摄入如何控制特定癌症中Mcl-1的过度表达,进而影响疗效,来自法国的Jean-Ehrland Ricci博士及其研究团队在淋巴瘤小鼠模型中进行了一系列试验。

研究者们将小鼠分为两组,在试验期内一组喂饲常规饮食;一组喂饲低卡路里饮食(正常摄入量的75%)。1周后,两组小鼠被进一步分作4组,在接下来的10天内接受不同治疗方案(无治疗和ABT-737治疗)。在试验的第17天时,所有小鼠均结束卡路里限制。

经观察发现,无论是单纯ABT-737治疗或单纯卡路里限制均不能增加小鼠存活率;但ABT-737治疗联合卡路里摄入限制可达到增加小鼠存活率的作用。常规饮食-未治疗对照组的小鼠,中位存活时间为30天,常规饮食-治疗组为33天,低卡路里饮食-未治疗组为30天,低卡路里饮食-治疗组为41天。在试验期后不久,研究者还发现低卡路里饮食联合ABT-737治疗可减少小鼠循环血中的淋巴瘤细胞数量,这一发现提示联合干预增高了淋巴瘤细胞对治疗的敏感度。

原文下载:

Meynet O, Zunino B, Happo L, Pradelli LA, Chiche J, Jacquin MA, Mondragón L, Tanti JF, Taillan B, Garnier G, Reverso-Meinietti J, Mounier N, Michiels JF, Michalak EM, Carles M, Scott CL, Ricci JE. Caloric restriction modulates Mcl-1 expression and sensitizes lymphomas to BH3 mimetic in mice. Blood. 2013 Aug 21. 

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    2014-09-30 172.23.126.130

    不治疗的话摄不摄入卡路里都一样die~~

    0

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    2014-02-17 ang666

    是否可以设置几组不同卡路里量摄入,寻求最佳组合

    0

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