1.华北理工大学,河北省唐山市曹妃甸新城渤海大道21号,063210
2.河北省中西医结合防治糖尿病及其并发症重点实验室
3.华北理工大学附属医院
yanxin@ncst.edu.cn
收稿:2025-09-01,
修回:2025-12-07,
纸质出版:2026-04-02
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徐慧妍,张海妹,詹心雨等.基于“肺肠相关”理论的溃疡性结肠炎炎癌转化模型小鼠肺气血屏障损伤情况评价[J].中医杂志,2026,67(07):776-783.
XU Huiyan,ZHANG Haimei,ZHAN Xinyu,et al.Evaluation of Pulmonary Air-Blood Barrier Damage in Ulcerative Colitis Inflammatory Cancer Transformation Model Mice:Based on the "Lung-Intestine Correlation" Theory[J].Journal of Traditional Chinese Medicine,2026,67(07):776-783.
徐慧妍,张海妹,詹心雨等.基于“肺肠相关”理论的溃疡性结肠炎炎癌转化模型小鼠肺气血屏障损伤情况评价[J].中医杂志,2026,67(07):776-783. DOI: 10.13288/j.11-2166/r.2026.07.013.
XU Huiyan,ZHANG Haimei,ZHAN Xinyu,et al.Evaluation of Pulmonary Air-Blood Barrier Damage in Ulcerative Colitis Inflammatory Cancer Transformation Model Mice:Based on the "Lung-Intestine Correlation" Theory[J].Journal of Traditional Chinese Medicine,2026,67(07):776-783. DOI: 10.13288/j.11-2166/r.2026.07.013.
目的
2
基于“肺肠相关”理论,动态观察评价溃疡性结肠炎(UC)炎癌转化过程中小鼠肺气血屏障损伤情况。
方法
2
65只C57BL/6小鼠采用随机数字表法分为正常组25只和模型组40只,模型组采用氧化偶氮甲烷/葡聚糖硫酸钠法建立小鼠UC炎癌转化模型,按照5、8、11、13、15周的取材时间,将正常组小鼠随机分为正常5周、8周、11周、13周、15周组,将模型组小鼠(10只小鼠在第1循环饮用葡聚糖硫酸钠结束后死亡)随机分为模型5周、8周、11周、13周、15周组。实验期间,每天观察小鼠一般状态,每周测量小鼠体质量。在相应取材时间点,测量各组小鼠结肠长度,HE染色法观察小鼠肺、结肠组织病理形态,免疫荧光法检测肺、结肠组织闭锁小带蛋白1(ZO-1)、血管内皮钙黏蛋白(VE-cadherin)和细胞骨架蛋白(F-actin)阳性表达,实时荧光定量PCR法检测肺组织B细胞淋巴瘤2(
Bcl
-
2
)
、
B细胞淋巴瘤2关联X蛋白(
Bax
)、半胱氨酸天冬氨酸蛋白酶3(
Caspase
-
3
)mRNA表达,Western Blot法检测肺组织ZO-1、VE-cadherin和F-actin蛋白水平。
结果
2
与同时间点正常组比较,各时间点模型组小鼠一般状态较差,体质量下降,结肠缩短(
P
<0.05或
P
<0.01)。模型5周组小鼠结肠组织炎性细胞浸润明显;模型8周组出现轻度异型增生;模型11周组隐窝结构紊乱,出现中重度异型增生;模型13周组、15周组出现肿瘤。肺间质病变、炎症、血管炎及纤维化等可见于UC炎癌转化各阶段。肺组织ZO-1、VE-cadherin、F-actin蛋白水平和
Bcl
-
2
mRNA表达在急性炎症恢复期、不典型增生期、成癌期均降低,
Bax、Caspase
-
3
mRNA表达升高;结肠组织ZO-1、VE-cadherin、F-actin蛋白水平在急性炎症恢复期、不典型增生期、成癌期均降低(
P
<0.01或
P
<0.05)。与模型5周组比较,其余模型组小鼠肺组织ZO-1、F-actin蛋白水平和
Bcl
-
2
mRNA表达在不典型增生期、成癌期升高,
Bax、Caspase
-
3
mRNA表达降低;结肠组织ZO-1蛋白水平在成癌期升高,VE-cadhe
rin蛋白水平在不典型增生期降低(
P
<0.01或
P
<0.05)。
结论
2
UC炎癌转化模型小鼠在“炎性反应→异型增生→癌变”过程均存在肺气血屏障损伤。
Objective
2
To dynamically observe and evaluate the damage to the pulmonary air-blood barrier in mice during the inflammatory cancer transformation process of ulcerative colitis (UC) based on the "lung-intestine correlation" theory.
Methods
2
Sixty-five C57BL/6 mice were divided into a normal group (n=25) and a model group (n=40) using a random number table. Azoxymethane/dextran sodium sulfate (DSS) method was used to establish a mouse model of UC inflammation cancer transformation in the modeling group. According to the tissue collection time points at 5, 8, 11, 13, and 15 weeks, the normal group mice were randomly divided into the normal 5w, 8w, 11w, 13w, and 15w groups. The model group mice, 10 mice of which died after the first cycle of DSS administration, were randomly divided into model 5w, 8w, 11w, 13w, and 15w groups. During the experiment, the general condition of the mice was observed daily, and their body weight was measured weekly. At the corresponding tissue collection time points, the colon length of each group was measured. Histopathology of mouse lung and colon tissues was examined using HE staining. Immunofluorescence was used to detect changes in the positive expression of tight junction protein (ZO-1), vascular endothelial cadherin (VE-cadherin), and cytoskeletal protein (F-actin) in lung and colon tissues. RT-PCR was used to detect the mRNA expression of apoptosis regulatory proteins B-cell lymphoma-2 (
Bcl
-
2
), BCL2-associated X protein (
Bax
), and Cysteine aspartic acid protease-3 (
Caspase
-
3
) in lung tissues. Western Blot was employed to measure protein levels of ZO-1, VE-cadherin, and F-actin in lung tissues.
Results
2
Compared to the normal group at the same time point, the mice in the model group at each time point generally had poorer conditions, with weight loss and shortened colon length (
P
<0.05 or
P
<0.01). In the model 5w group, there was significant inflammatory cell infiltration in the colon tissue; in the model 8w group, there was mild atypical hyperplasia; in the model 11w group, the crypt structure was disordered, and moderate to severe atypical hyperplasia occurred; in the model 13w and 15w groups, tumors appeared. Pulmonary interstitial lesions, inflammation, vasculitis, and fibrosis were observed at all stages of UC inflammation cancer transformation. The protein levels of ZO-1, VE-cadherin, and F-actin, as well as
Bcl
-
2
mRNA expression in lung tissue decreased during the acute inflammatory recovery period, atypical hyperplasia period, and canceration period, while the expressions of
Bax
and
Caspase
-
3
mRNA increased; the expressions of ZO-1, VE-cadherin, and F-actin proteins in colon tissue decreased during the acute inflammatory recovery period, atypical hyperplasia period, and canceration period (
P
<0.01 or
P
<0.05). Compared to the model 5w group, the ZO-1 and F-actin protein levels and
Bcl
-
2
mRNA expression in lung tissue in the other model groups increased in the atypical hyperplasia period and canceration period, while the expressions of
Bax
and
Caspase
-
3
mRNA decreased; the expression of ZO-1 protein in colon tissue increased in the canceration period, and the expression of VE-cadherin protein decreased in the atypical hyperplasia period (
P
<0.01 or
P
<0.05).
Conclusion
2
In the process of "inflammatory response-atypical hyperplasia-carcinogenesis" in UC inflammatory cancer transformation mice, there were damage to air-blood barrier.
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