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Glycolytic competence in gastric adenocarcinomas negatively impacts survival outcomes of patients treated with salvage paclitaxel-ramucirumab.
Gastric Cancer ( IF 7.4 ) Pub Date : 2020-05-05 , DOI: 10.1007/s10120-020-01078-0
Annamaria Ruzzo 1 , Francesco Graziano 2 , Irene Bagaloni 1 , Maria Di Bartolomeo 3 , Michele Prisciandaro 3 , Giuseppe Aprile 4 , Elena Ongaro 5 , Bruno Vincenzi 6 , Giuseppe Perrone 6 , Daniele Santini 6 , Lorenzo Fornaro 7 , Caterina Vivaldi 7 , Gianluca Tomasello 8 , Fotios Loupakis 9 , Sara Lonardi 9 , Matteo Fassan 10 , Michele Valmasoni 11 , Donatella Sarti 2 , Paola Lorenzini 2 , Vincenzo Catalano 2 , Renato Bisonni 12 , Michela Del Prete 12 , Guido Collina 13 , Mauro Magnani 1
Affiliation  

INTRODUCTION For energy production, cancer cells maintain a high rate of glycolysis instead of oxidative phosphorylation converting glucose into lactic acid. This metabolic shift is useful to survive in unfavorable microenvironments. We investigated whether a positive glycolytic profile (PGP) in gastric adenocarcinomas may be associated with unfavorable outcomes under an anticancer systemic therapy, including the anti-angiogenic ramucirumab. MATERIALS AND METHODS Normal mucosa (NM) and primary tumor (PT) of 40 metastatic gastric adenocarcinomas patients who received second-line paclitaxel-ramucirumab (PR) were analyzed for mRNA expression of the following genes: HK-1, HK-2, PKM-2, LDH-A, and GLUT-1. Patients were categorized with PGP when at least a doubling of mRNA expression (PT vs. NM) in all glycolytic core enzymes (HK-1 or HK-2, PKM-2, LDH-A) was observed. PGP was also related to TP53 mutational status. RESULTS Mean LDH-A, HK-2, PKM-2 mRNA expression levels were significantly higher in PT compared with NM. 18 patients were classified as PGP, which was associated with significantly worse progression-free and overall survival times. No significant association was observed between PGP and clinical-pathologic features, including TP53 positive mutational status, in 28 samples. CONCLUSIONS Glycolytic proficiency may negatively affect survival outcomes of metastatic gastric cancer patients treated with PR systemic therapy. TP53 mutational status alone does not seem to explain such a metabolic shift.

中文翻译:

胃腺癌的糖酵解能力对接受紫杉醇-雷莫芦单抗补救治疗的患者的生存结果产生负面影响。

引言 为了产生能量,癌细胞保持高速率的糖酵解,而不是将葡萄糖转化为乳酸的氧化磷酸化。这种代谢转变有助于在不利的微环境中生存。我们研究了胃腺癌中阳性糖酵解谱 (PGP) 是否与抗癌全身治疗(包括抗血管生成雷莫芦单抗)下的不利结果相关。材料和方法 40 名接受二线紫杉醇雷莫芦单抗 (PR) 治疗的转移性胃腺癌患者的正常粘膜 (NM) 和原发肿瘤 (PT) 分析了以下基因的 mRNA 表达:HK-1、HK-2、PKM -2、LDH-A 和 GLUT-1。当所有糖酵解核心酶(HK-1 或 HK-2、PKM-2、观察到 LDH-A)。PGP 也与 TP53 突变状态有关。结果 与 NM 相比,PT 中的平均 LDH-A、HK-2、PKM-2 mRNA 表达水平显着更高。18 名患者被归类为 PGP,这与无进展生存时间和总生存时间明显更差有关。在 28 个样本中,未观察到 PGP 与临床病理特征(包括 TP53 阳性突变状态)之间存在显着关联。结论 糖酵解能力可能对接受 PR 全身治疗的转移性胃癌患者的生存结果产生负面影响。TP53 突变状态本身似乎并不能解释这种代谢转变。18 名患者被归类为 PGP,这与无进展生存时间和总生存时间明显更差有关。在 28 个样本中,未观察到 PGP 与临床病理特征(包括 TP53 阳性突变状态)之间存在显着关联。结论 糖酵解能力可能对接受 PR 全身治疗的转移性胃癌患者的生存结果产生负面影响。TP53 突变状态本身似乎并不能解释这种代谢转变。18 名患者被归类为 PGP,这与无进展生存时间和总生存时间明显更差有关。在 28 个样本中,未观察到 PGP 与临床病理特征(包括 TP53 阳性突变状态)之间存在显着关联。结论 糖酵解能力可能对接受 PR 全身治疗的转移性胃癌患者的生存结果产生负面影响。TP53 突变状态本身似乎并不能解释这种代谢转变。结论 糖酵解能力可能对接受 PR 全身治疗的转移性胃癌患者的生存结果产生负面影响。TP53 突变状态本身似乎并不能解释这种代谢转变。结论 糖酵解能力可能对接受 PR 全身治疗的转移性胃癌患者的生存结果产生负面影响。TP53 突变状态本身似乎并不能解释这种代谢转变。
更新日期:2020-05-05
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