2017
Effect of the Diabetic State on Islet Engraftment and Function in a Large Animal Model of Islet–Kidney Transplantation
Vallabhajosyula P, Hirakata A, Weiss M, Griesemer A, Shimizu A, Hong H, Habertheuer A, Tchipashvili V, Yamada K, Sachs DH. Effect of the Diabetic State on Islet Engraftment and Function in a Large Animal Model of Islet–Kidney Transplantation. Cell Transplantation 2017, 26: 1755-1762. PMID: 29338381, PMCID: PMC5784526, DOI: 10.1177/0963689717732993.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBlood GlucoseGlucose Tolerance TestHyperglycemiaIslets of Langerhans TransplantationKidney TransplantationPancreatectomySwineSwine, MiniatureConceptsDiabetic stateIslet transplantationLarge animal modelEngraftment periodIslet engraftmentControl donorsIslet equivalentsAnimal modelsLong-term islet functionSimilar glucose tolerance testsDonor animalsChronic diabetic stateEnd-organ injuryAutologous islet transplantationGlucose tolerance testMiniature swine modelNephrectomized recipientsTotal pancreatectomyDiabetic nephropathyRecipient weightGlycemic controlOrgan injuryTolerance inductionDonor weightIschemic factorsTissue-specific exosome biomarkers for noninvasively monitoring immunologic rejection of transplanted tissue
Vallabhajosyula P, Korutla L, Habertheuer A, Yu M, Rostami S, Yuan CX, Reddy S, Liu C, Korutla V, Koeberlein B, Trofe-Clark J, Rickels MR, Naji A. Tissue-specific exosome biomarkers for noninvasively monitoring immunologic rejection of transplanted tissue. Journal Of Clinical Investigation 2017, 127: 1375-1391. PMID: 28319051, PMCID: PMC5373894, DOI: 10.1172/jci87993.Peer-Reviewed Original ResearchConceptsRenal transplantationImmunologic rejectionTransplanted tissueClinical settingBiomarker platformAppearance of hyperglycemiaIslet transplant modelIslet β-cellsDonor exosomesTransplant isletsHLA antibodiesRecipient bloodTransplant modelRecipient circulationXenogeneic modelRecipient plasmaRenal epithelial cellsTransplant tissueHuman isletsΒ-cellsBiomarker potentialTransplantationNoninvasive windowEpithelial cellsExosomal microRNAs
2011
Composite Islet-Kidneys From Single Baboon Donors Cure Diabetes Across Fully Allogenic Barriers
Yamada K, Hirakata A, Tchipashvili V, Shimizu A, Iwaki H, Griesemer A, Vallabhajosyula P, Moran S, Sachs DH. Composite Islet-Kidneys From Single Baboon Donors Cure Diabetes Across Fully Allogenic Barriers. American Journal Of Transplantation 2011, 11: 2603-2612. PMID: 21929644, PMCID: PMC3226882, DOI: 10.1111/j.1600-6143.2011.03733.x.Peer-Reviewed Original ResearchConceptsInsulin therapyFree isletsRenal capsuleEnd-stage diabetic nephropathyNonhuman primate modelPotential clinical applicabilityImmunosuppressive regimenAllogeneic barriersTotal pancreatectomyDiabetic nephropathyFBS levelsDiabetic hyperglycemiaPrimate modelPartial pancreatectomyDonor isletsMiniature swineNormal rangePotential cureGlucose regulationClinical applicabilityIsletsPancreatectomyTherapyIKsRecipientsQuantification of Baboon Thymopoiesis in Porcine Thymokidney Xenografts by the Signal-Joining T-Cell Receptor Excision Circle Assay
Tena A, Vallabhajosyula P, Hawley RJ, Griesemer A, Yamada K, Sachs DH. Quantification of Baboon Thymopoiesis in Porcine Thymokidney Xenografts by the Signal-Joining T-Cell Receptor Excision Circle Assay. Transplantation 2011, 91: 639-644. PMID: 21285918, PMCID: PMC3255479, DOI: 10.1097/tp.0b013e31820b6b52.Peer-Reviewed Original ResearchConceptsThymic tissueT cellsPeripheral bloodSjTREC levelsT-cell receptor excision circlesPeripheral blood mononuclear cellsPeripheral T cell poolT-cell receptor gene rearrangementsMemory T cellsT cell poolBlood mononuclear cellsNaïve T cellsReceptor gene rearrangementsQuantitative PCRDiscordant pigNative thymusThymic biopsiesGraft survivalKidney transplantPolymerase chain reaction analysisExcision circlesMononuclear cellsSurgical removalChain reaction analysisXenogeneic barriers
2007
Vascularized composite islet-kidney transplantation in a miniature swine model
Vallabhajosyula P, Griesemer A, Yamada K, Sachs DH. Vascularized composite islet-kidney transplantation in a miniature swine model. Cell Biochemistry And Biophysics 2007, 48: 201-207. PMID: 17709890, DOI: 10.1007/s12013-007-0027-4.Peer-Reviewed Original ResearchConceptsThymic tissueIslet equivalentsEnd-stage diabetic nephropathyType I diabetic patientsAllogeneic thymic tissueRecipient body weightLong-term toleranceLong-term survivalMiniature swine modelKidney allograftsMHC barriersDiabetic nephropathyAllogeneic isletsAllogeneic transplantationDiabetic hyperglycemiaDiabetic patientsThymic componentsTreatment regimensPortal veinRenal capsuleOrgan transplantsAutologous isletsMiniature swineTransplantationBody weight