Apoptosis induced by modified ribonucleosides in human cell culture systems

Area of Science:

• Biochemistry
• Molecular Biology
• Cell Biology

Background:

• Ribonucleosides play crucial roles in cellular processes.
• Aberrant cell proliferation and apoptosis are hallmarks of cancer.
• Understanding ribonucleoside function is key to cancer research.

Purpose of the Study:

• To investigate the in vitro modulation of apoptosis and cell proliferation by modified versus non-modified ribonucleosides.
• To explore the potential of ribonucleosides as selective anti-cancer agents.

Main Methods:

• Utilized human cell culture models: peripheral blood lymphocytes (PBL), HL-60 cells (leukemia), and Caco-2 cells (colon adenocarcinoma).
• Assessed the effects of various ribonucleosides at concentrations ranging from 10(-7) to 10(-3) mol/l.
• Quantified modulation of apoptosis and cell proliferation.

Main Results:

• Several ribonucleosides demonstrated modulating effects on apoptosis and proliferation.
• Adenosine, N6-dimethyladenosine, N6-(2-isopentenyl)-adenosine, and N2-dimethylguanosine induced significant apoptosis in HL-60 cells.
• N6-dimethyladenosine and N6-(2-isopentenyl)-adenosine showed significant apoptotic effects on PBL.
• N6-dimethyladenosine, N6-(2-isopentenyl)-adenosine, and guanosine inhibited apoptosis in Caco-2 cells.

Conclusions:

• Modified ribonucleosides exhibit selective apoptotic effects on malignant cell lines.
• These findings suggest potential for developing targeted cancer therapies based on ribonucleoside modulation.
• Ribonucleosides may serve as pathobiochemical markers in cancer, with therapeutic implications.