潘武 牛萬成 陳復興 徐正元 劉振峰
胃癌組織微環(huán)境中調(diào)節(jié)性T細胞的狀況與預后的關(guān)系
潘武1牛萬成2陳復興3徐正元1劉振峰1
【摘要】目的 觀察胃癌患者腫瘤、瘤旁、正常胃壁組織Treg細胞狀況,分析其與預后的關(guān)系。方法 采用免疫組織化學方法檢測50例胃癌手術(shù)患者腫瘤、瘤旁1 cm、正常胃壁組織中Treg細胞密度。結(jié)果 腫瘤組織及其癌旁組織中Treg細胞的平均浸潤數(shù)目高于正常組,P<0.05,差異具有統(tǒng)計學意義,腫瘤組織內(nèi)Treg細胞與胃癌預后有關(guān)系,P <0.05,差異具有統(tǒng)計學意義。結(jié)論 胃癌組織微環(huán)境中Treg細胞的含量明顯升高,且腫瘤組織內(nèi)Treg細胞的含量是胃癌患者的獨立預后因素。
【關(guān)鍵詞】組織微環(huán)境;調(diào)節(jié)性T細胞;細胞因子
作者單位:1 223600江蘇沭陽縣人民醫(yī)院消化內(nèi)科;2 221004徐州,解放軍第97醫(yī)院普外科;3 221004徐州,解放軍第97醫(yī)院實驗科
The Relationship Between Regulatory T Cells and Prognosis in the Microenvironment of Gastric Cancer
PAN Wu1NIU Wancheng2CHEN Fuxing3XU Zhengyuan1LIU Zhenfeng11 Shuyang County The People's Hospital Department of Internal Medicine in Jiangsu Province, Suqian 223600, China.2 The Chinese People’s Liberation Army of NO.97 Hospital General Surger, Xuzhou 221004, China.3 The Chinese People’s liberation Army of NO.97 Hospital Experiment Department, Xuzhou 221004, China
[Abstract]Objective To observe the relationship between regulatory T cells in tumor, paratumor and normal tissues and prognosis of gastric cancer. Methods The density of treg cells was detected by immunohistochemical method with tumor, pefitumoral 1 cm and normal tissues in 50 cases of gastric cancer patients. Results The average number of infiltration of treg cells in cancer tumor and its surrounding tissues was higher than that of normal gastric tissues, P<0.05, had difference statistically significance, there was an obvious correlation between treg cells in tumor tissues and the prognosis of gastric cancer, P<0.05, had difference statistically significance. Conclusion Treg cells in tissue microenvironment were significantly increased, and the content of treg cells in tumor was the independent prognostic factor of gastric cancer patients.
[Key words]Tissue microenvironment, Regulatory T cells, Cytokine
胃癌是最常見的惡性腫瘤之一,是我國農(nóng)村癌癥患者的第一死亡原因[1],其發(fā)病率和死亡率均超過世界平均水平的2倍[2-3]。調(diào)節(jié)性T細胞(Regulatory T Cells,Tregs)與腫瘤的免疫耐受以及免疫抑制密切相關(guān)。本研究通過檢測胃癌組織微環(huán)Tregs細胞的含量變化,探討胃癌患者的細胞免疫功能狀態(tài)與預后的關(guān)系。
1.1研究對象
收集我院2012年4月~2014年8月普通外科住院且經(jīng)術(shù)后病理證實為胃癌的患者50例,均為初治病例,未接受放射或化學治療。其中男性23例,女性27例,年齡32~71歲,中位年齡45歲?;颊呔鶡o糖尿病、類風濕、甲狀腺功能亢進等自身免疫性疾病史以及免疫治療史。
1.2檢測方法
采用免疫組織化學方法檢測50例胃癌患者腫瘤、瘤旁l cm、正常胃壁組織(瘤旁7~8 cm)中Treg細胞的數(shù)量,評價Treg細胞的狀況與預后的關(guān)系。
1.3統(tǒng)計學方法
所測數(shù)據(jù)采用SPSS1l.0軟件包分析,計量資料以(x-±s)表示,采用t檢驗,用Cox回歸模型作單因素與預后關(guān)系的分析,P<0.05,差異具有統(tǒng)計學意義。
對比Treg細胞在胃癌局部微環(huán)境中的分布及生存分析,見表1、表2。
免疫系統(tǒng)即人體的防御體系,既發(fā)揮著清除細菌等外來異物的功能,又可以清除體內(nèi)衰老細胞以及發(fā)生突變的細胞。細胞免疫功能的失調(diào)可導致多種疾病如腫瘤的發(fā)生[4]。Treg細胞1995年由Sakaguchi等首次報道[5],是迄今為止發(fā)現(xiàn)的最重要的免疫抑制細胞。文獻報道[6],腫瘤微環(huán)境中,Treg細胞能產(chǎn)生免疫抑制因子進而介導免疫抑制,而胃癌患者腫瘤組織中的Treg細胞的比例升高[7],與腫瘤的發(fā)生發(fā)展有關(guān)。本實驗中,我們發(fā)現(xiàn)腫瘤組織及其癌旁組織中Treg細胞的平均浸潤數(shù)目高于正常組織,P<0.05,差異具有統(tǒng)計學意義。且腫瘤組織內(nèi)Treg細胞的含量與胃癌預后有關(guān)系,P<0.05,差異具有統(tǒng)計學意義。
綜上所述,胃癌組織微環(huán)境中Treg細胞升高,同時腫瘤組織內(nèi)Treg細胞的含量是胃癌患者的獨立預后因素。
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doi:10.3969/j.issn.1674-9308.2015.26.048
【文章編號】1674-9308(2015)26-0067-02
【文獻標識碼】B
【中圖分類號】R735.2