Acceptance of Third‐Party Cardiac but not Skin Allografts Induced by Neonatal Exposure to Semi‐Allogeneic Lymphohematopoietic Cells

Acceptance of Third‐Party Cardiac but not Skin Allografts Induced by Neonatal Exposure to Semi‐Allogeneic Lymphohematopoietic Cells
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接受第三方心脏移植物,但不接受新生儿暴露于半同种异体淋巴造血细胞诱导的同种异体皮肤移植物

DOI:
--
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发表时间:
2002
影响因子:
8.8
通讯作者:
K. Tao
K. Tao
中科院分区:
医学2区
文献类型:
--
作者:
L. West;K. Tao

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通过皮肤同种异体移植存活和体外同种异体反应性测定来评估,新生儿的耐受性完全是供体特异性的。相比之下,我们之前报道过,在接受BALB/c来源(BALB, H‐2d)淋巴造血细胞治疗的新生C3H/He (C3H, H‐2k)小鼠中,主要血管化的心脏异体移植物的接受不是供体特异性的,但包括第三方C57BL/10 (B10, H‐2b)异体移植物。本研究调查了这种不寻常的模式是否仅限于这种菌株组合的心脏移植,并定义了供体细胞H - 2d单倍型对第三方心脏异体移植接受的相对重要性。给C3H新生儿注射(C3HxBALB)F1骨髓和脾脏细胞。在8-10周龄时,通过移植几个供体株的心脏或皮肤同种异体,以及体外增殖和细胞毒性试验来评估耐受性。此外,在BALB或非BALB次要组织相容性(miH)抗原背景下,对H - 2d和H - 2b表达菌株的细胞进行耐受性接种试验。在新生处理的小鼠中,观察到来自所有供体品系的心脏移植物的存活时间延长,而皮肤移植和体外试验显示供体特异性低反应性。移植供体和耐受细胞供体的H - 2d单倍型和非H - 2 miH背景对第三方心脏异体移植的接受都很重要。这些结果表明,新生儿同种异体抗原暴露引起的同种异体反应性功能改变部分取决于评估方法。
Neonatal tolerance is exclusively donor‐specific when assessed by skin allograft survival and in vitro alloreactivity assays. In contrast, we reported previously that acceptance of primarily vascularized cardiac allografts was not donor‐specific in C3H/He (C3H, H‐2k) mice treated as neonates with BALB/c‐derived (BALB, H‐2d) lymphohematopoietic cells, but included third‐party C57BL/10 (B10, H‐2b) allografts. The present study examined whether this unusual pattern is limited to heart grafts in this strain combination, and defined the relative importance of the donor cell H‐2d haplotype for third‐party cardiac allograft acceptance. C3H neonates were injected with (C3HxBALB)F1 bone marrow and spleen cells. Tolerance was assessed at age 8–10 weeks by transplantation of heart or skin allografts from several donor strains, and by in vitro assays of proliferation and cytotoxicity. Additionally, cells from H‐2d and H‐2b‐expressing strains on BALB or non‐BALB minor histocompatibility (miH) antigen backgrounds were tested as tolerizing inocula. Prolonged survival of cardiac grafts from all donor strains was observed in neonatally treated mice, whereas skin grafting and in vitro assays demonstrated donor‐specific hyporesponsiveness. Both H‐2d haplotype and non‐H‐2 miH background of graft donor and tolerizing cell donor were important to third‐party cardiac allograft acceptance. These results suggest that the functional alteration in alloreactivity induced by neonatal alloantigen exposure depends partly on method of assessment.
新生儿 H-2 耐受性中的主动克隆缺失。
DOI: 10.1111/j.1749-6632.1982.tb36113.x
发表时间: 1982
影响因子: 5.2
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移植耐受:克隆删除、主动抑制,或两者兼而有之?
DOI: --
发表时间: 1981
影响因子: 0.9
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DOI: 10.1097/00007890-199107000-00001
发表时间: 1991
期刊: Transplantation
影响因子: 6.2
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维持新生儿诱导的 H-2 I 类抗原耐受的细胞机制。
DOI: --
发表时间: 1983
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
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