Evaluation of NLRC4, NLRP1, and NLRP3, as Components of Inflammasomes, in Chronic Hepatitis B Virus-Infected Patients

Azadeh Askari, Reza Nosratabadi, Mehdi Khaleghinia, Nahid Zainodini, Derek Kennedy, Ziba Shabani, Mohammad Kazemi Arababadi
Viral Immunology 2016 October 17
27750030
Nucleotide-binding domain leucine repeats (NLRs) are required for the recognition of various molecules that are expressed within microbes and are able to actuate appropriate immune responses via activation of cytokines. The current study evaluates the expression levels of NLRP1 and NLRC4, which are components of inflammasomes, in chronic hepatitis B (CHB) virus-infected patients. This study recruited two series of CHB patients (each contained 60 patients) and 60 healthy controls. Real-time polymerase chain reaction (PCR) was employed to evaluate mRNA expression levels of NLRP1, NLRP3, and NLRC4 as well as hepatitis B virus (HBV)-DNA copy number. Serum levels of liver markers were also used to evaluate the patients. Hepatitis B envelope antigen (HBeAg) and hepatitis B surface antigen (HBsAg) were also examined in all patients to evaluate infection. The data showed that expression levels of NLRC4 and NLRP1 were not significantly different in circulating monocytes of CHB patients when compared with those of healthy controls. Furthermore, the data indicate that mRNA levels of NLRP1, NLRP3, and NLRC4 were also not altered in CHB patients regardless of HBV-DNA copy numbers/mL and HBeAg status. The data revealed that mRNA expression levels of NLRP1 and NLRC4 were not altered in CHB patients, suggesting that these genes are not responsible for the impaired immune responses against HBV observed in these patients.

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