Podcast
Questions and Answers
What primary mechanism enables the compounds described to exert their effect?
What primary mechanism enables the compounds described to exert their effect?
- Disrupting the cell membrane, leading to cell lysis
- Integrating themselves into DNA (correct)
- Directly binding to and deactivating mRNA
- Inhibiting protein synthesis by binding to ribosomes
What enzymatic activity is directly targeted by these compounds?
What enzymatic activity is directly targeted by these compounds?
- Telomerases
- Histone deacetylases (HDACs)
- DNA methyltransferases (DNMTs) (correct)
- Topoisomerases
What structural characteristic do the describe compounds share with cytidine?
What structural characteristic do the describe compounds share with cytidine?
- They contain a ribose sugar.
- They possess a unique phosphate group modification.
- They are lipid-based molecules.
- They are chemical analogues of the nucleoside. (correct)
What factor historically limited the widespread use of these compounds, particularly in solid tumors?
What factor historically limited the widespread use of these compounds, particularly in solid tumors?
What approach has led to a resurgence in the clinical interest and application of these compounds?
What approach has led to a resurgence in the clinical interest and application of these compounds?
Flashcards
Cytidine Analogues
Cytidine Analogues
Chemical compounds similar to cytidine that integrate into DNA.
Antimetabolites
Antimetabolites
Substances that interfere with DNA synthesis by mimicking nucleotides.
DNA Methyltransferases (DNMTs)
DNA Methyltransferases (DNMTs)
Enzymes that add methyl groups to DNA, affecting gene expression.
Toxicity in Cancer Treatment
Toxicity in Cancer Treatment
Signup and view all the flashcards
Low Dose Regimens
Low Dose Regimens
Signup and view all the flashcards
Study Notes
Analogues of Cytidine Nucleoside
- These compounds are chemically similar to cytidine nucleosides.
- They need to be incorporated into DNA to function.
Discovery and Initial Use
- Developed as anti-metabolites in the 1960s.
- Found to inhibit DNA methyltransferases (DNMTs), targeting DNA.
Toxicity and Clinical Use
- High doses cause significant toxicity in cancer patients.
- Limited use, particularly for solid tumors, due to toxicity.
- Recent clinical trials show promise with low-dose regimens.
- Low doses result in improved clinical outcomes with reduced side effects.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
