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Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 J+Immunol 2015 ; 194 (12): 5885-94 Nephropedia Template TP
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GIMAP GTPase Family Genes: Potential Modifiers in Autoimmune Diabetes, Asthma, and Allergy #MMPMID25964488
Heinonen MT; Laine AP; Söderhäll C; Gruzieva O; Rautio S; Melén E; Pershagen G; Lähdesmäki HJ; Knip M; Ilonen J; Henttinen TA; Kere J; Lahesmaa R; Knip M; Groop PH; Ilonen J; Lappi A; Otonkoski T; Saha MT; Simell O; Talvitie T; Vaarala O; Veijola R; Aito H; Bondestam J; Dahllund T; Granvik J; Haapalehto-Ikonen M; Hämäläinen AM; Huopio H; Johansson C; Kinnala A; Korhonen J; Korpela P; Korteniemi M; Lautala P; Lindström K; Miettinen P; Mustila T; Nuuja A; Nykänen P; Ojanperä J; Putto-Laurila A; Saha MT; Sankila J; Suomi AM; Tenhola S; Varimo P; Veijola R; Virransalo R; Vuolukka P; Ylitalo S
J Immunol 2015[Jun]; 194 (12): 5885-94 PMID25964488show ga
GTPase of the immunity-associated protein (GIMAP) family members are differentially regulated during human Th cell differentiation and have been previously connected to immune-mediated disorders in animal studies. GIMAP4 is believed to contribute to the Th cell subtype?driven immunological balance via its role in T cell survival. GIMAP5 has a key role in BB-DR rat and NOD mouse lymphopenia. To elucidate GIMAP4 and GIMAP5 function and role in human immunity, we conducted a study combining genetic association in different immunological diseases and complementing functional analyses. Single nucleotide polymorphisms tagging the GIMAP haplotype variation were genotyped in Finnish type 1 diabetes (T1D) families and in a prospective Swedish asthma and allergic sensitization birth cohort. Initially, GIMAP5 rs6965571 was associated with risk for asthma and allergic sensitization (odds ratio [OR] 3.74, p = 0.00072, and OR 2.70, p = 0.0063, respectively) and protection from T1D (OR 0.64, p = 0.0058); GIMAP4 rs13222905 was associated with asthma (OR 1.28, p = 0.035) and allergic sensitization (OR 1.27, p = 0.0068). However, after false discovery rate correction for multiple testing, only the associations of GIMAP4 with allergic sensitization and GIMAP5 with asthma remained significant. In addition, transcription factor binding sites surrounding the associated loci were predicted. A gene?gene interaction in the T1D data were observed between the IL2RA rs2104286 and GIMAP4 rs9640279 (OR 1.52, p = 0.0064) and indicated between INS rs689 and GIMAP5 rs2286899. The follow-up functional analyses revealed lower IL-2RA expression upon GIMAP4 knockdown and an effect of GIMAP5 rs2286899 genotype on protein expression. Thus, the potential role of GIMAP4 and GIMAP5 as modifiers of immune-mediated diseases cannot be discarded.
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J+Immunol 2015 ; 194 (12): 5885-94
