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首页> 外文期刊>Pancreatology: official journal of the International Association of Pancreatology (IAP) ... [et al.] >Specific amino acid profile in culture media conditioned by human pancreatic cancer cell lines.
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Specific amino acid profile in culture media conditioned by human pancreatic cancer cell lines.

机译:在人类胰腺癌细胞系条件下的培养基中的特定氨基酸谱。

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摘要

BACKGROUND: In malignant diseases, circulating amino acid profiles correlate with organ sites of malignancy. Direct effects of malignant cells on the extracellular amino acid profile are still uncertain. METHODS: Free amino acids were measured in serum-free culture media (RPMI-1640) conditioned by two human pancreatic cancer cell lines (Panc-1 and HPAF), a hamster pancreatic cancer cell line (PC-1), a human epidermoid carcinoma cell line (A-431), and a human fibroblastic cell line (Ag-1523). Non-conditioned RPMI-1640 medium was used as control. RESULTS: Amino acid profiles were changed in all the conditioned media, caused by a decrease or increase in the original amino acids and by the appearance of amino acids that were not present in non-conditioned medium. Media conditioned by two human pancreatic cancer cell lines showed similar amino acid profiles, which were characterized by a decrease in glutamine, cysteine and serine, increase in glycine, proline and glutamic acid and appearance of ornithine and alanine. CONCLUSION: Culture media show changed amino acid profiles following incubation with cell lines of pancreatic or non-pancreatic origins. Different human pancreatic cancer cell lines cause similar changes in amino acid profiles of media.
机译:背景:在恶性疾病中,循环氨基酸谱与恶性器官部位相关。恶性细胞对细胞外氨基酸谱的直接影响仍不确定。方法:在无血清培养基(RPMI-1640)中测定游离氨基酸,该培养基以两种人胰腺癌细胞系(Panc-1和HPAF),仓鼠胰腺癌细胞系(PC-1),人表皮样癌为条件细胞系(A-431)和人成纤维细胞系(Ag-1523)。非条件的RPMI-1640培养基用作对照。结果:所有条件培养基中的氨基酸谱都发生了变化,这是由于原始氨基酸的减少或增加以及非条件培养基中不存在的氨基酸的出现引起的。以两种人胰腺癌细胞系为条件的培养基显示出相似的氨基酸谱,其特征在于谷氨酰胺,半胱氨酸和丝氨酸的减少,甘氨酸,脯氨酸和谷氨酸的增加以及鸟氨酸和丙氨酸的出现。结论:与胰腺或非胰腺来源的细胞培养后,培养基显示出改变的氨基酸谱。不同的人胰腺癌细胞系会引起培养基氨基酸谱的相似变化。

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