Mammalian nucleoside transporters

Area of Science:

• Biochemistry
• Molecular Biology
• Pharmacology

Background:

• Nucleoside transporters facilitate the uptake of essential nucleosides for DNA/RNA synthesis via salvage pathways.
• These transporters are critical for the efficacy and targeting of nucleoside analog drugs used in cancer and antiviral treatments.
• Mammalian cells express two main families: equilibrative nucleoside transporters (ENTs) and concentrative nucleoside transporters (CNTs).

Purpose of the Study:

• To review the structure, function, distribution, and localization of cloned mammalian nucleoside transporters.
• To present information on transporter interactions with nucleoside drugs and analogs.
• To discuss the regulation and therapeutic significance of nucleoside transporters.

Main Methods:

• Review of molecular cloning data for ENT and CNT transporters.
• Analysis of existing literature on nucleoside transporter structure and function.
• Compilation of data on drug interactions, tissue distribution, and cellular localization.

Main Results:

• Molecular cloning has significantly advanced the understanding of nucleoside transport mechanisms.
• Detailed information on various cloned mammalian nucleoside transporters (ENTs and CNTs) is available.
• Data on drug interactions, tissue distribution, and cellular localization have been compiled.

Conclusions:

• Nucleoside transporters are crucial for both physiological nucleoside uptake and the therapeutic action of nucleoside analogs.
• Further research into nucleoside transporter regulation and function holds significant therapeutic potential.
• Emerging clinical data highlight the importance of nucleoside transporters in drug development and patient outcomes.