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同一器官来源的肿瘤细胞的DNA合成比正常细胞()

发布日期:2022-07-12

同一器官来源的肿瘤细胞的DNA合成比正常细胞()
A

增加

B

无差异

C

持平

D

减少

E

下降

试题解析

肿瘤细胞

肿瘤细胞实质就是肿瘤。肿瘤组织由实质和间质两部分构成,肿瘤实质是肿瘤细胞,是肿瘤的主要成分,具有组织来源特异性。它决定肿瘤的生物学特点以及每种肿瘤的特殊性。通常根据肿瘤的实质形态来识别各种肿瘤的组织来源,进行肿瘤的分类、命名和组织学诊断,并根据其分化成熟程度和异型性大小来确定肿瘤的良恶性和肿瘤的恶性程度。肿瘤细胞有三个显著的基本特征即:不死性,迁移性和失去接触抑制。除此之外,肿瘤细胞还有许多不同于正常细胞的生理、生化和形态特征。研究发现,肿瘤细胞会出现不同于正常细胞的代谢变化,同时肿瘤细胞自身可通过糖酵解和氧化磷酸化(OXPHOS)之间的转换来适应代谢环境的改变。2019年,Cancer Cell最新刊登了一篇文章,研究人员发现在禁食状态下使用二甲双胍可以显著抑制肿瘤生长,并提出PP2A-GSK3β-MCL-1通路可能是肿瘤治疗的新靶点。

中文名
肿瘤细胞
实质
肿瘤
属性
具有组织来源特异性
辅助治疗
肿瘤药
外文名
tumor cells
组成
由实质和间质两部分组成
具体
是一种基因病

正常细胞

正常细胞相对于病理细胞而言的称谓.由细胞壁 细胞膜 细胞质等组成.

中文名
正常细胞
相对
病理细胞
外文名
CELL
组成
细胞壁 细胞膜 细胞质

器官

1、几种不同类型的组织经发育分化并相互结合构成具有一定形态和功能的结构。2、几种组织相互结合,组成具有一定形态和功能的结构,称为器官。如骨、脑、心、肺、肾等。3、生物体内能担任某种独立的生理机能的部分。例如胃,肾,心等。每个器官都由数种组织组成。几个器官联合构成系统。

中文名
器官
定义
有多种不同组织、不同功能的结构
关联
生物学
外文名
organ
作用
用来完成某些特定功能
拼音
Qi Guan

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