Homogeneous phenomenon of the graft when using different genotype characteristic of recipients/donors in living donor liver transplantation

AIM:To investigate the evidence of homogeneous phenomenon on CYP3A5*3 MDR1-3435 and CYP3A4*18of the liver graft after living donor liver transplantation(LDLT).METHODS:We identified the proportional change of the CYP3A5*3,MDR1-3435 and CYP3A4*18 from the peripheral blood mononuclear cell of 41 pairs recipient/donor with different genotype polymorphisms and 119liver graft biopsy samples used with the pyrosequencing technique after LDLT.Polymerase chain reaction/ligase detection reaction assay and restriction fragment length polymorphism was employed for genotyping the CYP3A5*3 and CYP3A4*18 single nucleotide poly-morphisms(SNPs).All of the recipients and donors expressed with the similar SNP genotype of CYP3A5*3,MDR1-3435 or CYP3A4*18 were excluded.RESULTS:The final genetic polymorphisms of the liver graft biopsy samples of CYP3A5*3,MDR1-3435 and CYP3A4*18 was predominated depends on the donor with restriction fragment length polymorphism and seems to be less related to the recipient.The proportional changes of G to A alleles of the 119 samples of CYP3A5*3(included A】A/G,A/G】A,A/G】G,G】A,G】A/G and A】G),C to T alleles of the 108 samples of MDR1-3435(included C】C/T,C/T】C,C/T】T,T】C/T and T】C),and T to C alleles of 15 samples of CYP3A4*18(included T/C】T and T】C/T)were significant different between the recipients and the liver graft biopsy samples(P【0.0001)and less difference when compared with the donors in the pyrosequencing analysis after LDLT.CONCLUSION:The CYP3A5*3,MDR1-3435 and CYP3A4*18 of the recipient could be modified by the donor so-called homogenous phenomenon when the recipient’s blood drained into the liver graft.