Human Gene Set: CAO_BLOOD_FLUZONE_AGE_05_14YO_30DY_DN


Standard name CAO_BLOOD_FLUZONE_AGE_05_14YO_30DY_DN
Systematic name M41104
Brief description Genes down-regulated in blood 30d vs 0d in children (0.5-14y) after exposure to Fluzone , time point 30D. Comment: ~80% of cohort were white, ~50/50 Female:male
Full description or abstract BACKGROUND: Live attenuated influenza vaccine (LAIV) and trivalent inactivated influenza vaccine (TIV) are effective for prevention of influenza virus infection in children, but the mechanisms associated with protection are not well defined. METHODS: We analyzed the differences in B-cell responses and transcriptional profiles in children aged 6 months to 14 years immunized with these 2 vaccines. RESULTS: LAIV elicited a significant increase in naive, memory, and transitional B cells on day 30 after vaccination, whereas TIV elicited an increased number of plasmablasts on day 7. Antibody titers against the 3 vaccine strains (H1N1, H3N2, and B) were significantly higher in the TIV group and correlated with number of antibody-secreting cells. Both vaccines induced overexpression of interferon (IFN)-signaling genes but with different kinetics. TIV induced expression of IFN genes on day 1 after vaccination in all age groups, and LAIV induced expression of IFN genes on day 7 after vaccination but only in children < 5 years old. IFN-related genes overexpressed in both vaccinated groups correlated with H3N2 antibody titers. CONCLUSIONS: These results suggest that LAIV and TIV induced significantly different B-cell responses in vaccinated children. Early induction of IFN appears to be important for development of antibody responses.
Collection C7: Immunologic Signature
      VAX: HIPC Vaccine Response
Source publication Pubmed 24495909   Authors: Cao RG,Suarez NM,Obermoser G,Lopez SM,Flano E,Mertz SE,Albrecht RA,García-Sastre A,Mejias A,Xu H,Qin H,Blankenship D,Palucka K,Pascual V,Ramilo O
Exact source Suppl Table 1
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External links https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4092249/bin/supp_jiu079_jiu079supp_table1.doc
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Source species Homo sapiens
Contributed by HIPC SIGNATURES (NIAID/HIPC SIGNATURES)
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