Tomotherapy and Hematopoietic Stem Cells for Tolerance to Kidney Transplants
Tomotherapy and Hematopoietic Stem Cells for Tolerance to Kidney Transplants
批准号:
10219064
负责人:
Dixon B Kaufman
金额:
$186.09万
依托单位国家:
美国
项目类别:
财政年份:
2012
资助国家:
美国
项目状态:
已结题
起止时间:
2012-08-01 至 2022-07-31
关键词:
AllelesAllogenicAllograftingAnimal TestingAnimalsAntibodiesAntigensAntithymoglobulinBiopsyBone MarrowBone Marrow CellsBone Marrow TransplantationCD14 geneCD34 geneCellsCharacteristicsChimerismChronicClinicalCytomegalovirusDNADendritic CellsDevelopmentDonor personElementsEngraftmentEnvironmentFlow CytometryGoalsHaplotypesHealthcareHematopoieticHematopoietic stem cellsHistocompatibility Antigens Class IHumanImmuneImmune ToleranceImmunocompetenceImmunologic MonitoringImmunologicsImmunosuppressionImmunosuppressive AgentsInfusion proceduresInjuryKidneyKidney TransplantationKnowledgeLiving DonorsMHC Class I GenesMacaca mulattaMaintenanceMeasuresModelingMyeloid CellsMyeloid-derived suppressor cellsOrganOrgan TransplantationPathologyProtocols documentationRegimenRhesusSafetySolidSurvival RateT cell responseT-LymphocyteTestingTetanus ToxoidTimeTransplant RecipientsTransplantationTransplantation ToleranceWithdrawalbasecell typeclinical applicationconditioningdrug withdrawalimmunopathologyimmunoregulationinnovationkidney allograftkidney celllymphoid irradiationmonocytepatient populationperipheral bloodpost-transplantprogrammed cell death ligand 1public health relevancesuccesstransplant modelvirtual
中文摘要
TomoTreatment和干细胞移植对肾脏移植的耐受性增强。
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摘要:
下半身
这一项目的首要目标是为MHC和不同的肾脏开发一种新的耐受性和诱导方案。
在恒河猴和猕猴体内进行移植,以进一步阐明其诱导分化和维护的潜在机制。
在这个模型中,存在混合的嵌合体和不同的耐受性。第二个主要的研究假设是,对MHC的耐受性是不匹配的。
肾移植是一种安全、有效的移植方法,通过建立一种新的方法建立一种新型的混合嵌合体移植模式。
建立了移植后非清髓性、螺旋CT放射疗法和全淋巴系统放射治疗(TLI)-
根据调理方案,随后是供者骨髓-CD34+造血干细胞(HSC)输注。
此外,我们还将阐明与这些疾病密切相关的宿主免疫调节功能特征的机制。
成功地完成了HSC的嫁接和对嵌合体状态的维护工作。我们将提出以更多的手段来验证我们的假设的方法。
2.具体目标:1)联合应用骨髓、造血干细胞/肾脏移植,以进一步确定移植方案。
在接受完全不同和无关的供体肾移植的恒河猴和猕猴中,有5%的人可能实现嵌合体。
(如果没有GVHD)药物和药物只能在超过2年的时间内从所有免疫抑制药物中撤出。
维持正常的同种异体移植的功能和功能,而不出现排斥反应。我们将继续测量中国混合嵌合体的状态。
根据各种外周血细胞和骨髓细胞的变化,受者被认为是移植后时间的主要功能指标。
类型包括使用DNA序列(STR)进行分析,用流式细胞术检测,使用恒河猴血清抗体和特异性抗体检测MHC-I类。
(2)免疫监测、免疫病理学和免疫能力。(我们将:(A))
确定早期受者对以TLI为基础的TLI诱导的宿主髓系细胞的免疫调节功能的变化。
调节方案(与骨髓移植的成功与否相关)决定了这两种疗法是否混合。
嵌合状态诱导宿主树突状细胞和供者MHC-I类抗原和Pd-Li的获得性改变。
在撤除免疫抑制药物后,在一系列的时间段中和之后的一系列时间段中的表现(c.)可以表征这种情况。
通过对一系列同种异体肾移植患者的肾活检、肾移植和肾移植的分析,探讨移植肾免疫功能的发展和非免疫性肾损伤的发生。
D.)通过临床检测,确定免疫抑制药物停药后受试者的免疫能力水平。
这次召回是因为T细胞对巨细胞病毒抗原和破伤风类毒素的反应。通过这次召回,我们获得了更多的知识。
恒河猴对诱导方案的耐受性,包括其潜在的免疫调节机制,将不会有直接的影响。
这与一系列种类繁多的已故心脏捐赠者的移植有关。此外,它还将为医疗保健开辟一条新的道路。
创新和交付意味着,它将极大地造福于移植患者、患者和其他潜在的患者群体。
英文摘要
Tomotherapy and Hematopoietic Stem Cells for Tolerance to Kidney Transplants
ABSTRACT
The overarching goal of this project is to develop a tolerance induction protocol for MHC disparate kidney
transplants in rhesus macaques and to elucidate the underlying mechanisms of the induction and maintenance
of mixed chimerism and tolerance in this model. The primary hypothesis is that tolerance to MHC mismatched
kidney transplants can be safely and effectively achieved by establishing a mixed chimeric state using a newly
established post‐transplant non‐myeloablative, helical tomotherapy‐based total lymphoid irradiation (TLI)‐
based conditioning regimen followed by donor bone marrow‐CD34+ hematopoietic cell (HSC) infusions. In
addition, we will elucidate mechanisms of host immunoregulatory characteristics that are associated with
successful HSC engraftment and maintenance of the chimeric state. We propose to test our hypotheses by means
of 2 specific aims: 1.) Combined Bone Marrow Hematopoietic Cell/Kidney Transplants to determine the
proportion of rhesus macaque recipients of disparate unrelated donor kidney transplants that achieve chimerism
(without GVHD) and can be withdrawn from all immunosuppressive drugs for greater than 2 years while
maintaining normal allograft function and without rejection. We will measure the state of mixed chimerism in
recipients as a function of time post‐transplant and according to various peripheral blood and bone marrow cell
types using DNA (STR) analysis, and with flow cytometry using rhesus antibodies specific for MHC class I
Mamu alleles of the donor. 2) Immune Monitoring, Immunopathology and Immunocompetence. We will: a.)
determine early recipient immunoregulatory changes of host myeloid cells induced by the TLI‐based
conditioning regimen that correlate with the success of bone marrow engraftment, b.) determine if the mixed
chimeric state induces changes of host dendritic cell acquisition of donor MHC class I antigen and PD‐LI
expression at serial time points during and after withdrawing immunosuppression, c.) characterize the
development of renal allograft immune and non‐immune injury by analysis of serial renal allograft biopsies, and
d.) determine the degree of recipient immune‐competency after immunosuppressive drug withdrawal by testing
the recall T cell responses to cytomegalovirus antigens and tetanus toxoid. Knowledge gained through this
rhesus tolerance induction protocol, including the underlying immunological mechanisms, will have direct
relevance to a variety of deceased donor transplants. Furthermore, it will set a new course of healthcare
innovation and delivery that will greatly benefit transplant patients, and other patient populations.
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University of Wisconsin Transplant Reseach Training Program
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批准号:9307715
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项目类别:
-
资助金额:$27.72万
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财政年份:2016
-
负责人:Dixon B Kaufman
-
依托单位:
University of Wisconsin Transplant Reseach Training Program
-
批准号:9925721
-
项目类别:
-
资助金额:$27.7万
-
财政年份:2016
-
负责人:Dixon B Kaufman
-
依托单位:
Tomotherapy and Hematopoietic Stem Cells for Tolerance to Kidney Transplants
-
批准号:10518420
-
项目类别:
-
资助金额:$57.85万
-
财政年份:2012
-
负责人:Dixon B Kaufman
-
依托单位:
Tomotherapy and Hematopoietic Stem Cells For Tolerance to Kidney Transplants
-
批准号:8706792
-
项目类别:
-
资助金额:$206.46万
-
财政年份:2012
-
负责人:Dixon B Kaufman
-
依托单位:
Tomotherapy and Hematopoietic Stem Cells For Tolerance to Kidney Transplants
-
批准号:8401097
-
项目类别:
-
资助金额:$201.39万
-
财政年份:2012
-
负责人:Dixon B Kaufman
-
依托单位:
Tomotherapy and Hematopoietic Stem Cells For Tolerance to Kidney Transplants
-
批准号:8517007
-
项目类别:
-
资助金额:$257.0万
-
财政年份:2012
-
负责人:Dixon B Kaufman
-
依托单位:
Tomotherapy and Hematopoietic Stem Cells for Tolerance to Kidney Transplants
-
批准号:9329967
-
项目类别:
-
资助金额:$102.42万
-
财政年份:2012
-
负责人:Dixon B Kaufman
-
依托单位:
Clinical Islet Transplantation at Northwestern
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批准号:7791909
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项目类别:
-
资助金额:$161.88万
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财政年份:2009
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负责人:Dixon B Kaufman
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依托单位:
A PILOT STUDY OF ISLET TRANSPLANTATION IN NON-UREMIC DIABETIC PATIENTS
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批准号:7604311
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项目类别:
-
资助金额:$1.14万
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财政年份:2006
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负责人:Dixon B Kaufman
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依托单位:
ISLET TRANSPLANTATION IN NON-UREMIC DIABETIC PATIENTS
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批准号:7604238
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项目类别:
-
资助金额:$1.14万
-
财政年份:2006
-
负责人:Dixon B Kaufman
-
依托单位:
A PILOT STUDY OF EFFICACY OF ISLET TRANSPLANTATION IN TYPE I DIABETES
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批准号:7376823
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项目类别:
-
资助金额:$0.21万
-
财政年份:2005
-
负责人:Dixon B Kaufman
-
依托单位:
A PILOT STUDY OF ISLET TRANSPLANTATION IN NON-UREMIC DIABETIC PATIENTS
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批准号:7376913
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项目类别:
-
资助金额:$1.31万
-
财政年份:2005
-
负责人:Dixon B Kaufman
-
依托单位:
ISLET TRANSPLANTATION IN NON-UREMIC DIABETIC PATIENTS
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批准号:7376824
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项目类别:
-
资助金额:$2.32万
-
财政年份:2005
-
负责人:Dixon B Kaufman
-
依托单位:
A PILOT STUDY OF EFFICACY OF ISLET TRANSPLANTATION IN TYPE I DIABETES
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批准号:7200425
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项目类别:
-
资助金额:$1.38万
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财政年份:2004
-
负责人:Dixon B Kaufman
-
依托单位:
ISLET TRANSPLANTATION IN NON-UREMIC DIABETIC PATIENTS
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批准号:7200427
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项目类别:
-
资助金额:$4.24万
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财政年份:2004
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负责人:Dixon B Kaufman
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依托单位:
A Pilot Study of Efficacy of Islet Transplantation in Type I Diabetes
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批准号:7040350
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项目类别:
-
资助金额:$1.89万
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财政年份:2003
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负责人:Dixon B Kaufman
-
依托单位:
Islet Transplantation in Non-Uremic Diabetic Patients
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批准号:7040353
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项目类别:
-
资助金额:$8.72万
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财政年份:2003
-
负责人:Dixon B Kaufman
-
依托单位:
Bioluminescent Imaging of Pancreatic Islet Transplants
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批准号:6576787
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项目类别:
-
资助金额:$31.54万
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财政年份:2002
-
负责人:Dixon B Kaufman
-
依托单位:
Bioluminescent Imaging of Pancreatic Islet Transplants
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批准号:6804797
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项目类别:
-
资助金额:$10.0万
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财政年份:2002
-
负责人:Dixon B Kaufman
-
依托单位:
Bioluminescent Imaging of Pancreatic Islet Transplants
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批准号:6786596
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项目类别:
-
资助金额:$31.62万
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财政年份:2002
-
负责人:Dixon B Kaufman
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依托单位:
海外基金