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1.川北医学院附属医院肿瘤科,四川南充
2.陆军军医大学(第三军医大学)第二附属医院普外科,重庆
3.陆军军医大学(第三军医大学)药学与检验医学系微生物与生化药学教研室,重庆
彭六生,E-mail:pengliusheng06@163.com
马代远,E-mail:mdylx@163.com
收稿:2025-12-04,
修回:2026-01-11,
录用:2026-01-16,
纸质出版:2026-02-28
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黄梦秋,钟杭,邱远,等.胃肿瘤组织中浸润的免疫抑制性CD103+CD39+CD8+ T细胞亚群功能受损并促进肿瘤进展[J].陆军军医大学学报,2026,48(04):445-452.DOI:10.16016/j.2097-0927.202512028.
HUANG M Q,ZHONG H,QIU Y,et al.Functionally impaired CD103+CD39+CD8+ T cell subsets with immune-suppressive properties infiltrating gastric cancer tissues promote tumor progression[J].J Army Med Univ,2026,48(04):445-452.DOI:10.16016/j.2097-0927.202512028.
黄梦秋,钟杭,邱远,等.胃肿瘤组织中浸润的免疫抑制性CD103+CD39+CD8+ T细胞亚群功能受损并促进肿瘤进展[J].陆军军医大学学报,2026,48(04):445-452.DOI:10.16016/j.2097-0927.202512028. DOI:
HUANG M Q,ZHONG H,QIU Y,et al.Functionally impaired CD103+CD39+CD8+ T cell subsets with immune-suppressive properties infiltrating gastric cancer tissues promote tumor progression[J].J Army Med Univ,2026,48(04):445-452.DOI:10.16016/j.2097-0927.202512028. DOI:
目的
2
检测CD103
+
CD39
+
CD8
+
T细胞亚群在胃肿瘤组织中的浸润水平并分析其应答特征,分析CD103
+
CD39
+
CD8
+
T细胞亚群在人胃肿瘤组织中的的临床相关性。
方法
2
收集2023年1月至2024年5月在陆军军医大学第二附属医院普外科接受手术切除的32例胃癌患者的肿瘤组织、癌旁组织以及外周血标本。采用流式细胞术结合免疫荧光染色检测CD103
+
CD39
+
CD8
+
T细胞亚群在胃肿瘤组织及癌旁组织中的应答比例与数目,并通过流式细胞术分析胃肿瘤组织中CD103
+
CD39
+
CD8
+
T细胞亚群表达的CD69、PD-1与IFN-γ水平;体外分离培养外周血来源的单个核细胞,探究TGF-β1对CD103
+
CD39
+
CD8
+
T细胞亚群的分化效果;通过流式细胞术检测CD103
+
CD39
+
CD8
+
T细胞亚群的浸润水平,以分析其与疾病分期的相关性。
结果
2
与癌旁组织相比,CD103
+
CD39
+
CD8
+
T细胞亚群在胃肿瘤组织中的比例明显增加(
P
<
0.05);免疫荧光染色进一步证实,胃肿瘤组织中CD103
+
CD39
+
CD8
+
T 细胞亚群的数目亦明显多于癌旁组织;与CD103
+
CD39
-
和CD103
-
CD39
-
CD8
+
T细胞亚群相比,CD103
+
CD39
+
CD8
+
T细胞亚群表达的活化分子CD69和免疫检查点分子PD-1均增加(
P
<
0.05),但功能相关因子IFN-γ的表达则显著下降(
P
<
0.05);体外TGF-β1刺激可诱导CD8
+
T细胞中CD103与CD39的共表达上调(
P
<
0.05);此外,CD103
+
CD39
+
CD8
+
T细胞亚群在晚期胃癌患者肿瘤组织中的浸润比例显著高于早期胃癌患者(
P
<
0.05)。
结论
2
CD103
+
CD39
+
CD8
+
T细胞亚群在胃肿瘤组织中的浸润增加,并展示出功能受抑的应答特征,从而有助于胃癌的免疫逃逸。
Objective
2
To detect the infiltration level of CD103
+
CD39
+
CD8
+
T cell subsets in gastric cancer tissues and analyze their response characteristics
clarifying the clinical relevance of this subset.
Methods
2
Surgical specimens (tumor tissues
adjacent tissues
and peripheral blood) were collected from gastric cancer patients at the Department of General Surgery
Second Affiliated Hospital of Army Medical University between January 2023 and May 2024. Flow cytometry and immunofluorescence staining quantified the proportion and number of CD103
+
CD39
+
CD8
+
T cells in tumor ve
rsus adjacent tissues. Flow cytometry further analyzed CD69
PD-1
and IFN-γ expression in this subset. Peripheral blood mononuclear cells (PBMCs) were isolated and cultured
in vitro
to assess TGF-β1-induced differentiation. Correlation with disease stage was analyzed by detecting the infrltration level of CD103
+
CD39
+
CE8
+
T Cell subsets
via
flow cytometry.
Results
2
Compared with adjacent tissues
gastric cancer tissues showed significantly increased proportions of CD103
+
CD39
+
CD8
+
T cells (
P
<
0.05); immunofluorescence confirmed higher numbers in tumor tissues. Relative to CD103
+
CD39
-
and CD103
-
CD39
-
CD8
+
T subsets
CD103
+
CD39
+
CD8
+
T cells exhibited elevated CD69 and PD-1 expression (
P
<
0.05) but reduced IFN-γ (
P
<
0.05).
In vitro
TGF-β1 stimulation upregulated co-expression of CD103 and CD39 in CD8
+
T cells (
P
<
0.05). Moreover
advanced gastric cancer patients had higher tumor infiltration of this subset than early-stage patients (
P
<
0.05).
Conclusion
2
CD103
+
CD39
+
CD8
+
T cell subsets display increased infiltration and functionally impaired responses in gastric cancer
facilitating tumor immune escape.
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