相关实验视频

Updated: Jun 28, 2025

Author Spotlight: Transmitochondrial Cybrid Generation Using Cancer Cell Lines

Author Spotlight: Transmitochondrial Cybrid Generation Using Cancer Cell Lines

Published on: March 17, 2023

氨酸过度驱动重新连接癌细胞代谢

Swamy R Adapa^1,2, Gregory A Hunter³, Narmin E Amin⁴

¹USF Genomics Program, Center for Global Health and Infectious Diseases, College of Public Health, University of South Florida, Tampa, FL, USA.

Life science alliance

|April 22, 2024

概括

癌细胞表现出"氨酸过度驱动",一种不平衡的血代谢,对它们的生长至关重要. 针对这种代谢脆弱性提供了一种新的策略来根除癌细胞.

科学领域:

生物化学生物化学
癌症生物学癌症生物学
代谢途径代谢途径

背景情况:

癌细胞表现出代谢重编程以推动异常生长.
血质代谢对细胞功能至关重要,包括氧气运输和能量生产.

研究的目的:

确定和描述癌细胞中一种新的代谢重新连接,称为"氨酸过度驱动".
调查氨酸过度驱动在癌症特异性代谢脆弱性中的作用.
开发一种针对这种代谢脆弱性的治疗策略.

主要方法:

全基因组数据分析以确定血红素代谢失衡的驱动因素.
在白血病细胞系中进行CRISPR/Cas9基因编辑,以损害血红蛋白生物合成步骤.
单细胞RNA测序 (scRNA-seq) 用于分析患者衍生的瘤原生细胞中的氨酸过量.

主要成果:

癌细胞由于失衡的血代谢途径而积累血中间体 (氨酸),称为"氨酸过量".
氨酸过量是癌症必不可少的和癌症特异性的,由编码中阶段血红蛋白生物合成酶的基因驱动.
氨酸过量的存在于瘤原生细胞和早期胚胎发生,但不在分化细胞和体干细胞中.
一种新的"诱和杀死"策略通过利用这种代谢脆弱性,有效地准和根除恶性细胞.

结论:

癌细胞依赖于非稳定性血质代谢,表现出"氨酸过量".
这种新陈代谢的重新连接代表了癌症特有的脆弱性.
向氨酸过量驱动为癌症根除提供了一个有前途的治疗方法.

更多相关视频

Assessment of the Metabolic Profile of Primary Leukemia Cells

Published on: November 21, 2018

Hyperpolarized 13C Metabolic Magnetic Resonance Spectroscopy and Imaging

Hyperpolarized 13C Metabolic Magnetic Resonance Spectroscopy and Imaging

Published on: December 30, 2016

相关概念视频

Adaptive Mechanisms in Cancer Cells

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...

Electron Transport Chain: Complex I and II

Electron Transport Chain: Complex I and II

The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...

Cancer-Critical Genes I: Proto-oncogenes

Cancer-Critical Genes I: Proto-oncogenes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...

Cancer Stem Cells and Tumor Maintenance

Cancer Stem Cells and Tumor Maintenance

Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...

Abnormal Proliferation

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...

Treatment Resistant Cancers

Treatment Resistant Cancers

Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...