24小时热门版块排行榜    

查看: 2066  |  回复: 0

wunavy

木虫 (初入文坛)

[求助] P53与肿瘤细胞有氧糖酵解/瓦伯格效应之间的关系

今天看了一篇摘要大致内容是:
p53突变后失去对葡萄糖-6-磷酸脱氢酶(磷酸戊糖途径的限速酶)的抑制作用,致使细胞磷酸戊糖途径代谢增强,而这一发现能解释肿瘤细胞发生的有氧糖酵解(瓦伯格效应)。
请问:磷酸戊糖途径产生的NADPH和5-磷酸核糖对细胞的糖酵解有什么影响
(5-磷酸核糖可转变为3-磷酸甘油醛和6-磷酸果糖,这应该是有氧氧化和糖酵解的共同通路)

文献标题:p53 regulates biosynthesis through direct inactivation of glucose-6-phosphate dehydrogenase
Cancer cells consume large quantities of glucose and primarily use glycolysis for ATP production, even in the presence of adequate oxygen 1,2. This metabolic signature (aerobic glycolysis or the Warburg effect) enables cancer cells to direct glucose to biosynthesis, supporting their rapid growth and proliferation 3,4. However, both causes of the Warburg effect and its connection to biosynthesis are not well understood. Here we show that the tumor suppressor p53, the most frequently mutated gene in human tumors, inhibits the pentose phosphate pathway 5. Via the PPP, p53 suppresses glucose consumption, NADPH production, and biosynthesis. The p53 protein binds to glucose-6-phosphate dehydrogenase (G6PD), the first and rate-limiting enzyme of the PPP, and prevents the formation of the active dimer(. Tumor-associated p53 mutants lack the G6PD-inhibitory activity. Therefore, enhanced PPP glucose flux due to p53 inactivation may increase glucose consumption and direct glucose toward biosynthesis in tumor cells.
回复此楼
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

智能机器人

Robot (super robot)

我们都爱小木虫

相关版块跳转 我要订阅楼主 wunavy 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[公派出国] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +3 TZqyNTBa07NP 2026-11-13 3/150 2026-11-15 14:22 by 0aDbZAghdVq9
[考博] 售SCI一区文章,我:8O5.5.1.O5.4,科目全,可伽急 +3 TZqyNTBa07NP 2026-11-13 3/150 2026-11-15 11:47 by xSrQNSSjcgoX
[考研] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +3 uKOSCocCb6Fm 2026-11-12 8/400 2026-11-15 02:26 by xSrQNSSjcgoX
[硕博家园] 售SCI文章,我:8O.5.5.1O.54,科目全,可十急 +3 uKOSCocCb6Fm 2026-11-12 9/450 2026-11-15 02:04 by xSrQNSSjcgoX
[考研] 售SCI一区T0P文章,我:8O.55.1.O.54,科目全,可伽急 +5 YHiw1gou1Eda 2026-11-10 8/400 2026-11-14 22:51 by Equinoxhua
[考研] 售SCI一区T0P文章,我:8.O.55.1.O54,科目全,可伽急 +6 FChKX8meu1ds 2026-11-09 9/450 2026-11-14 22:39 by Equinoxhua
[教师之家] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +6 C6CRn66RYYXS 2026-11-10 6/300 2026-11-13 04:21 by Equinoxhua
[论文投稿] 售SCI一区T0P文章,我:8.O.55.1.O54,科目全,可伽急 +3 TgvkbZZl9tqB 2026-11-11 4/200 2026-11-12 12:51 by ECLTXnJnRSXf
[基金申请] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +4 Z7qfCsdIiD1T 2026-11-11 5/250 2026-11-12 11:44 by HajghKOMynmz
[基金申请] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +4 Z7qfCsdIiD1T 2026-11-10 7/350 2026-11-12 11:33 by HajghKOMynmz
[公派出国] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +3 Z7qfCsdIiD1T 2026-11-10 7/350 2026-11-12 11:31 by HajghKOMynmz
[考博] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +3 Z7qfCsdIiD1T 2026-11-10 5/250 2026-11-12 11:25 by HajghKOMynmz
[硕博家园] 售SCI文章,我:8O.5.5.1O.54,科目全,可十急 +4 czAiolzR0IJC 2026-11-10 8/400 2026-11-12 10:49 by HajghKOMynmz
[教师之家] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +4 G2rhSvqvhNzl 2026-11-10 6/300 2026-11-12 10:38 by HajghKOMynmz
[公派出国] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +5 FChKX8meu1ds 2026-11-09 10/500 2026-11-12 09:52 by HajghKOMynmz
[考研] 售SCI文章,我:8O.5.5.1O.54,科目全,可十急 +7 0TEMgxdT1eIw 2026-11-09 9/450 2026-11-12 09:24 by HajghKOMynmz
[论文投稿] 售SCI一区文章,我:8.O.551.O.5.4,科目全,可伽急 +3 cdqGD6ftHmbl 2026-11-11 3/150 2026-11-12 07:53 by HajghKOMynmz
[公派出国] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +3 gRND4NVAZ8VG 2026-11-11 3/150 2026-11-12 07:42 by HajghKOMynmz
[考研] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +4 C6CRn66RYYXS 2026-11-10 6/300 2026-11-12 06:03 by 9fOTqj074tIg
[考博] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +3 FChKX8meu1ds 2026-11-09 8/400 2026-11-12 05:30 by 9fOTqj074tIg
信息提示
请填处理意见