Genetics of graft‐versus‐host disease, I. A locus on Chromosome 1 influences development of acute graft‐versus‐host disease in a major histocompatibility complex mismatched murine model

Department of Biology, Indiana University-Purdue University at Indianapolis, IN, USA.
Immunology (Impact Factor: 3.8). 02/1999; 96(2):254-61. DOI: 10.1046/j.1365-2567.1999.00626.x
Source: PubMed


Graft-versus-host disease (GVHD) is the major complication occurring after bone marrow transplantation. The severity of GVHD varies widely, with this variation generally being attributed to variation in the degree of disparity between host and donor for minor histocompatibility antigens. However, it is also possible that other forms of polymorphism, such as polymorphisms in immune effector molecules, might play a significant role in determining GVHD severity. In order to investigate this hypothesis, we are studying the genetic factors that influence GVHD development in a murine model. We here report the first results of this analysis, which demonstrate that a locus on Chromosome 1 of the mouse, and possibly also a locus on Chromosome 4, exert considerable influence over the development of one aspect of acute GVHD - splenomegaly - in a parent-->F1 murine model. These results demonstrate that non-MHC genes can exert quite significant effects on the development of GVHD-associated pathology and that gene mapping can be used as a tool to identify these loci. Further analysis of such loci will allow identification of the mechanism whereby they influence GVHD and may lead in the future to improved selection of donors for human bone marrow transplantation.

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    • "Over 80 QTLs are listed at the mouse genome database (36) and a number of cis and trans eQTLs have been characterized (37). Among them, several QTLs are involved with complex inflammatory reaction, such as graft vs. host disease (38) lupus (39), modifier of LPS-response (40), and susceptibility to tuberculosis (41). "
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    ABSTRACT: Typhoid fever and salmonellosis, which are caused by Salmonella typhi and typhimurium, respectively, are responsible for significant morbidity and mortality in both developed and developing countries. We model typhoid fever using mice infected with Salmonella typhimurium, which results in a systemic disease, whereby the outcome of infection is variable in different inbred strains of mice. This model recapitulates several clinical aspects of the human disease and allows the study of the host response to Salmonella typhimurium infection in vivo. Previous work in our laboratory has identified three loci (Ity, Ity2, and Ity3) in the wild-derived MOLF/Ei mice influencing survival after infection with Salmonella typhimurium. Fine mapping of the Ity3 locus indicated that two sub-loci contribute collectively to the susceptibility of B6.MOLF-Ity/Ity3 congenic mice to Salmonella infection. In the current paper, we provided further evidence supporting a role for Ncf2 (neutrophil cytosolic factor 2 a subunit of NADPH oxidase) as the gene underlying the Ity3.1 sub-locus. Gene expression profiling indicated that the Ity3.1 sub-locus defined a global gene expression signature with networks articulated around Ncf2. Furthermore, based on differential expression and complementation analysis using Selp (selectin-P) knock-out mice, Selp was identified as a strong candidate gene for the Ity3.2 sub-locus.
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    • "Some non-MHC loci that modify alloresponse were shown to be minor antigens coded in the mouse by Mtv [13]. Several groups have reported that recognition of a host vSAG (viral superantigens) (Mls1a and Mls2a) by donor T cells may determine the manifestations of GVHD in several parental/F1 strain combinations [14] [15], others indicate roles of non-MHC non-Mls genes in MLR [16] [17] and in GVHD [18] [19] [20] [21]. "
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    ABSTRACT: Alloreactivity is the strongest known primary immune response. Its clinical manifestations are graft rejection, graft-versus-host disease and graft-versus-leukemia effect. The strongest stimulation by allogeneic cells is due to incompatibility at the major histocompatibility complex (MHC) genes. However, the non-MHC genes also participate in allogeneic response. Here we present a mouse model for study of the role of non-MHC genes in regulation of alloreactivity and show that they besides encoding antigens also regulate the responsiveness. Recombinant congenic strains (RCS) of O20/A (O20)-c-B10.O20/Dem (OcB/Dem) series have been derived from the parental strains O20 and B10.O20, which carry identical MHC haplotypes (H2pz) and therefore their differences in alloantigen response depend only on non-MHC genes. We have tested a MLR response by spleen cells of the strains O20, B10.O20, and 16 OcB/Dem strains through stimulation by cells from strains C57BL/10 (H2b), BALB/c (H2d), CBA (H2k), and DBA/1 (H2q) alloantigens. Proliferative response of O20, B10.O20 and OcB/Dem strains to these four alloantigens exhibited a similar but not completely identical pattern of reactivity. The responses to different alloantigens were highly correlated: C57BL/10-BALB/c r = 0.87, C57BL/10-CBA r = 0.84, C57BL/10-DBA/1 r = 0.83. Cluster analysis of the responses by O20, B10.O20, and OcB mice identified groups of strains with distinct patterns of response. This data shows that two main types of genes influence MLR: 1. structural genes for major and minor alloantigens and 2. genes regulating T-cell receptor signal transduction or mediating costimulatory signals by antigen-presenting cells.
    Full-text · Article · Mar 2006 · Central European Journal of Biology
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    ABSTRACT: Despite contemporary typing procedures for bone marrow transplantation (BMT), graft-versus-host disease (GVHD) continues to be a major complication of transplants performed between MHC-matched donors and recipients. Although GVHD can be alleviated by T cell depletion, this procedure increases the risk of graft failure and leukemic relapse and therefore is not a solution to the GVHD problem. The high degree of variation in the intensity of GVHD observed in different patients suggests that multiple non-MHC genetic factors influence GVHD severity. We hypothesize that, in addition to minor histocompatibility antigen disparities, polymorphisms in genes encoding immunologic effector molecules may be important factors influencing GVHD development. This study aims to explore this hypothesis by identifying non-MHC genes that influence the outcome of BMT in a murine model. In this model, B10.D2 donor leukocytes cause acute GVHD in (C57BL/6xDBA/2)F1 (B6D2F1) recipients, whereas DBA/2 donor leukocytes do not. To date, a locus on chromosome 1 has been identified as influencing the severity of GVHD in this model. Our current study shows that a locus on chromosome 2 acts independently of the chromosome 1 locus to also influence GVHD severity in this model. The region of chromosome 2 implicated in our study contains genes encoding beta2-microglobulin, the minor histocompatibility antigen H-3 and the pro-inflammatory cytokine IL-1.
    Preview · Article · Jul 1999 · Bone Marrow Transplantation
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