Differential expression of viral PAMP receptors mRNA in peripheral blood of patients with chronic hepatitis C infection
1 Laboratorio de Inmunología, Hospital de Cruces, Barakaldo, Vizcaya, Spain
2 Departamento de Gastroenterología y Hepatología, Hospital de Cruces, Barakaldo, Vizcaya, Spain
3 Unidad de Cirugía Hepática. Hospital de Cruces, Barakaldo, Vizcaya, Spain
BMC Infectious Diseases 2007, 7:136 doi:10.1186/1471-2334-7-136Published: 19 November 2007
Pathogen-associated molecular patterns (PAMP) receptors play a key role in the early host response to viruses. In this work, we determined mRNA levels of two members of the Toll-like Receptors family, (TLR3 and TLR7) and the helicase RIG-I, all of three recognizing viral RNA products, in peripheral blood of healthy donors and hepatitis C virus (HCV) patients, to observe if their transcripts are altered in this disease.
IFN-α, TLR3, TLR7 and RIG-I levels in peripheral blood from healthy controls (n = 18) and chronic HCV patients (n = 18) were quantified by real-time polymerase chain reaction.
Our results show that IFN-α, TLR3, TLR7 and RIG-I mRNA levels are significantly down-regulated in patients with chronic HCV infection when compared with healthy controls. We also found that the measured levels of TLR3 and TLR7, but not RIG-I, correlated significantly with those of IFN-α
Monitoring the expression of RNA-sensing receptors like TLR3, TLR7 and RIG-I during the different clinical stages of infection could bring a new source of data about the prognosis of disease.