相关实验视频
Updated: Jun 17, 2026

06:53
Cell Population Analyses During Skin Carcinogenesis
Published on: August 21, 2013
在Smoothened和Patched中致癌突变的影响可以通过环胺逆转
J Taipale1, J K Chen, M K Cooper
1Department of Molecular Biology and Genetics, Howard Hughes Medical Institute, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.
Nature
|September 13, 2000
概括
环胺是一种来自植物的化合物,抑制了 Hedgehog (Hh) 信号通路. 这种化合物显示出作为各种人类瘤的治疗剂的潜力,这些瘤是由 Smoothened (SMO) 或 Patched (PTCH) 突变推动的.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 滑化 (SMO) 或补丁 (PTCH) 基因的突变激活了 (Hh) 信号通路.
- 这种异常的Hh通路活性与各种人类瘤的发展有关,包括基底细胞癌,髓母细胞瘤和骨髓筋肉瘤.
研究的目的:
- 为了研究循环胺的治疗潜力,一种来自植物的Hh通路的抑制剂.
- 确定环胺是否可以阻断SMO或PTCH突变驱动的瘤中的Hh通路激活和异常细胞生长.
主要方法:
- 用环胺及其合成衍生物治疗瘤细胞.
- 评估Hh通路活性和细胞生长抑制.
主要成果:
- 环胺有效地抑制了Hh反应途径.
- 环胺及其衍生物阻断瘤SMO或PTCH突变的瘤中的异常细胞生长.
- 环胺的机制可能涉及调节活跃和非活跃的平衡形式.
结论:
- 环胺是一种潜在的基于SMO和PTCH驱动的瘤的机制治疗剂.
- 环胺的合成衍生物为癌症治疗提供了更好的疗效.
- 用环胺准Hh通路为瘤治疗提供了一个有前途的策略.
相关概念视频
Mismatch Repair
Overview
Hedgehog Signaling Pathway
The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
Positive Regulator Molecules
Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
Inhibition of Cdk Activity
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
Mismatch Repair
Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
Induced Pluripotent Stem Cells
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic cells are...
Somatic cells are...

