Immunostimulatory and Cellular Toxic Effects of Single-Stranded RNA On Cancer Cells

<p>Whether 5'-triphosphate-single-stranded-RNA (5 '-ppp-ssRNA) is immunostimulatory was controversial in the literature. In order to clarify the immunostimulatory effect of 5'-ppp-ssRNA, we synthesized ssRNAs and tested the IFNp (interferon-beta) level and cellular toxicity of ssRNAs in SKOV3 cells. In this work, we confirmed that 5'-ppp-ssRNA (~ 60nt) was immunostimulatory and toxic in SKOV3 cells. 5'-ppp-ssRNA (~ 60nt) led to IFN-P induction and apoptosis in SKOV3 cells. Longer 5' ppp- ssRNA tended to have a higher immunostimulatory effect and cellular toxicity than shorter 5'-ppp-ssRNA. 5'-ppp-ssRNA was more immunostimulatory and toxic than 5'- 0H-ssRNA. If the incubation time of ssRNAs increased, the toxicity of ssRNAs would increase. Higher concentrations of ssRNA tended to be more toxic than lower concentrations of ssRNA. RIG-I (retinoic acid-inducible gene 1) plays a role in the recognition of 5' -ppp-ssRNA. This work provides a guideline for the design of immunostimulatory RN As which can be applied in cancer therapy.</p>

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Masters Thesis

Discipline thesis:degree_discipline

Biological Sciences

Year dc:date.available

2012

Author dc:creator

• Teng, Chengwen

• Biology
• Life Sciences

Repository record dc:identifier

https://aquila.usm.edu/masters_theses/564

OAI identifier oai:identifier

oai:aquila.usm.edu:masters_theses-1639