FLuc Labelled Respiratory Syncytial Virus

Respiratory syncytial virus (RSV) is a common respiratory virus that infects the lungs and respiratory tract. RSV is a member of the Paramyxoviridae family and is a single-stranded RNA virus. While it can infect people of all ages, it particularly causes serious health problems in infants, young children, the elderly, and those with compromised immune systems. Symptoms of RSV infection range from mild cold-like symptoms such as runny nose, cough, and fever to more severe symptoms such as bronchiolitis and pneumonia. In infants and young children, RSV is the leading cause of lower respiratory tract infections and the most common reason for hospitalization for respiratory distress. In severe cases, especially in premature infants and children with heart or lung disease, RSV can be life-threatening.

FLuc is a bioluminescent enzyme originally derived from the North American firefly (Photinus pyralis). FLuc catalyzes a light-emitting reaction when exposed to its substrate luciferin and the presence of ATP, oxygen, and magnesium ions. By incorporating the FLuc gene into the RSV genome, scientists can engineer a modified virus that emits light during replication. This modification does not significantly alter the infectivity or pathology of the virus, allowing researchers to more effectively monitor the course of infection. This is particularly advantageous for studying viral pathogenesis, immune responses, and the effectiveness of antiviral treatments during infection.