中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (25): 4053-4058.doi: 10.3969/j.issn.2095-4344.0963

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

异基因骨髓细胞联合淋巴细胞输注抑制结肠癌肝转移

瞿元乾,周 庆,张 进,徐三荣   

  1. 江苏大学附属医院普外科,江苏省镇江市 212000
  • 修回日期:2018-04-16 出版日期:2018-09-08 发布日期:2018-09-08
  • 通讯作者: 徐三荣,博士,主任医师,江苏大学附属医院普外科,江苏省镇江市 212000
  • 作者简介:瞿元乾,男,1987年生,江苏省金坛市人,汉族,江苏大学在读硕士,医师,主要从事普通外科方面的研究。
  • 基金资助:

    国家自然科学基金项目(81301693);江苏省自然科学基金项目(BK20130474);镇江市社会发展项目(SH2015056)

Inhibiting colorectal cancer liver metastasis by combined injection of allogeneic bone marrow cells and lymphocytes

Qu Yuan-qian, Zhou Qing, Zhang Jin, Xu San-rong   

  1. Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang 212000, Jiangsu Province, China
  • Revised:2018-04-16 Online:2018-09-08 Published:2018-09-08
  • Contact: Xu San-rong, M.D., Chief physician, Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang 212000, Jiangsu Province, China
  • About author:Qu Yuan-qian, Master candidate, Physician, Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang 212000, Jiangsu Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81301693; the Natural Science Foundation of Jiangsu Province, No. BK20130474; the Social Development Project of Zhenjiang City, No. SH2015056

摘要:

文章快速阅读:

文题释义:
移植物抗宿主病:
是小鼠移植异基因淋巴细胞后,经受者发动的一系列“细胞因子风暴”刺激,显著增强了其对受者抗原的免疫反应,以受者靶细胞为目标发动细胞毒攻击,其中皮肤、肝及肠道是主要的靶目标。小鼠多表现为体质量减轻、活动能力下降以及皮毛光泽变差、皮肤出现溃烂并有弓背等表现。不同表现可以评估小鼠的移植物抗宿主病严重程度。
非清髓造血干细胞移植:又称降低预处理强度的造血干细胞移植,简称为小移植。其关键点是选用达到足够强度的免疫抑制,但受者的骨髓仅仅被抑制而未摧毁的预处理方案,使供者的造血干细胞能安全植入(因受者的免疫功能已被足够抑制,不会产生排异反应),又使受者残存的造血功能在短时间内恢复,形成在一定时间内供、受者造血细胞同时存在,称为嵌合状态。这样可造成受者的免疫耐受,从而减少移植物抗宿主病的发生率及降低严重程度。

 

摘要
背景:
异基因造血干细胞移植对结肠癌术后肝转移的预防和治疗在临床以及动物实验中鲜有研究报道,结肠癌术后肿瘤负荷较小,此时建立混合型嵌合体可望取得一定疗效。
目的:探讨异基因造血干细胞移植对结肠癌肝转移的抑制作用及其对嵌合体和移植物抗宿主病的影响,并对其抑瘤机制进行研究。
方法:BALB/c×C57BL/6 杂交一代CB6F1小鼠保脾注射CT-26大肠癌细胞建立结肠癌肝转移模型,随机分为4组:对照组、环磷酰胺组、全相合脾细胞加骨髓细胞移植+环磷酰胺组(全相合移植组)、半相合脾细胞加骨髓细胞移植+环磷酰胺组(半相合移植组),每组8只。取自C57BL/6小鼠和CB6F1小鼠骨髓及脾细胞混合后行尾静脉注射,之后接受腹腔注射环磷酰胺进行非清髓性预处理,再输注供鼠淋巴细胞。观察各组小鼠生存时间、肿瘤肝转移以及移植物抗宿主病发生情况;流式细胞仪进行嵌合体分析,ELISA方法测定血浆白细胞介素2、γ-干扰素、白细胞介素4、转化生长因子β水平。
结果与结论:①半相合移植组小鼠生存期明显延长,结肠癌肝转移抑制率明显增高,抑瘤率明显增加,与环磷酰胺组及全相合移植组相比,差异有显著性意义;②半相合移植组小鼠混合细胞移植7 d后,供鼠细胞嵌合率逐渐增加;至移植后28 d,供鼠细胞基本取代受鼠细胞,嵌合率达99%以上;③半相合移植组小鼠的移植物抗肿瘤效应明显增强,但未出现严重的移植物抗宿主病症状,且小鼠血浆白细胞介素2、γ-干扰素水平较其他组明显升高,转化生长因子β水平明显降低,而白细胞介素4水平无明显差异;④结果表明,小鼠经环磷酰胺非清髓处理的异基因骨髓细胞联合淋巴细胞移植后嵌合率明显增加,伴随产生了明显的移植物抗肿瘤效应,其对结肠癌肝转移具有抑制作用。血浆白细胞介素2、γ-干扰素、转化生长因子β水平变化与肿瘤生长抑制是有关联的。

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID: 0000-0002-2107-9016(瞿元乾)

关键词: 结肠癌肝转移, 异基因, 骨髓细胞, 脾细胞, 淋巴细胞, 移植物抗宿主病, 嵌合体, 小鼠, 干细胞, 国家自然科学基金

Abstract:

BACKGROUND: Clinical and experimental studies on prevention and treatment of hepatic metastasis after colonic cancer treatment by allogeneic hematopoietic stem cell transplantation have yet to be well reported. A mixed chimera is expected to achieve certain effects in patients with low-tumor burden after colorectal cancer resection.
OBJECTIVE: To investigate the inhibitory effect of allogeneic hematopoietic stem cell transplantation on colorectal cancer liver metastasis as well as the effect on chimera level and graft-versus-host disease and to study the anti-tumor mechanism. 
METHODS: CB6F1 mice were hybridized by BALB/c×C57BL/6 mice and injected with CT-26 cells to make animal models of colorectal cancer liver metastasis. Then, model mice were randomized into four groups (n=8 per group): control group, cyclophosphamide group, HLA-identical spleen cells plus bone marrow cell transplantation+cyclophosphamide group (HLA-identical transplantation group), and haploidentical spleen cells plus bone marrow cell transplantation+cyclophosphamide group (haploidentical transplantation group). Mixture of spleen cells and bone marrow cells from CB6F1 and C57BL/6 mice were injected via the tail vein followed by a non-myeloablative pretreatment with intraperitoneal injection of cyclophosphamide, and thereafter, lymphocytes were given via infusion. Survival time, tumor liver metastasis and the occurrence of graft-versus-host disease were observed in mice. The chimera was analyzed by flow cytometry, and levels of plasma interleukin-2, interferon-γ, interleukin-4, and transforming growth factor β were determined by ELISA
RESULTS AND CONCLUSION: The survival time and inhibition rate of liver metastasis in the haploidentical transplantation group were significantly prolonged and increased compared with cyclophosphamid and HLA-identical transplantation group, respectively. At 7 days after transplantation, the chimera level in the haploidentical transplantation group was significantly increased up to over 99% at 28 days of transplantation, indicating that donor cells were basically substituted by recipient cells. Significantly enhanced anti-tumor effect was found in the haploidentical transplantation group, while there were no signs of severe graft-versus-host disease. Moreover, the levels of plasma interleukin-2 and interferon-γ in mice were significantly higher than those in the other groups, and the level of transforming growth factor β was significantly reduced. However, there was no significant difference in the interleukin 4 level. To conclude, co-transplantation of cyclophosphamide-pretreated allogeneic bone marrow cells and lymphocytes significantly increases the chimera level, accompanied by the production of obvious anti-tumor effect of the graft that has an inhibitory effect on colorectal cancer liver metastasis. Changes in levels of plasma interleukin-2, interferon-γ, interleukin-4, and transforming growth factor β are associated with tumor growth inhibition.

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Colonic Neoplasms, Neoplasm Metastasis, Liver, Bone Marrow Transplantation, Lymphocytes, Chimera, Graft vs Host Disease, Tissue Engineering

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