2020
Islet transplantation in the subcutaneous space achieves long-term euglycaemia in preclinical models of type 1 diabetes
Yu M, Agarwal D, Korutla L, May CL, Wang W, Griffith NN, Hering BJ, Kaestner KH, Velazquez OC, Markmann JF, Vallabhajosyula P, Liu C, Naji A. Islet transplantation in the subcutaneous space achieves long-term euglycaemia in preclinical models of type 1 diabetes. Nature Metabolism 2020, 2: 1013-1020. PMID: 32895576, PMCID: PMC7572844, DOI: 10.1038/s42255-020-0269-7.Peer-Reviewed Original ResearchConceptsIslet transplantationSubcutaneous spacePancreatic isletsNon-human primate modelSyngeneic islet transplantationType 1 diabetesTreatment of typeLack of neovascularizationPancreatic islet transplantationNew therapeutic paradigmHuman pancreatic isletsSustained normoglycaemiaGraft survivalHypoxic cell deathPrimate modelPreclinical modelsAnimal modelsTransplantationSubcutaneous transplantationTherapeutic paradigmDiabetesEuglycaemiaCell deathIsletsTransplantation methodologies
2019
Noninvasive diagnosis of recurrent autoimmune type 1 diabetes after islet cell transplantation
Korutla L, Rickels MR, Hu RW, Freas A, Reddy S, Habertheuer A, Harmon J, Korutla V, Ram C, Naji A, Vallabhajosyula P. Noninvasive diagnosis of recurrent autoimmune type 1 diabetes after islet cell transplantation. American Journal Of Transplantation 2019, 19: 1852-1858. PMID: 30801971, PMCID: PMC7043773, DOI: 10.1111/ajt.15322.Peer-Reviewed Original ResearchConceptsIslet cell transplantationAutoimmune type 1 diabetesType 1 diabetesCell transplantationT1D autoimmunityNoninvasive diagnosisPancreatic β-cell injuryGlutamic acid decarboxylase 65Time-matched analysisΒ-cell injuryTransplanted β-cellsHyperglycemia onsetIslet injuryRecurrent autoimmunityHypoglycemic unawarenessTime-specific increaseIslet autoantigensCurative therapyT1D patientsImmunologic rejectionExogenous insulinInjury typeControl subjectsIslet transplantationDonor islets
2017
Tissue-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