G位點(diǎn)多態(tài)性與宮頸癌易感性關(guān)聯(lián)的研究文獻(xiàn)。對(duì)符合納入標(biāo)準(zhǔn)的文獻(xiàn)進(jìn)行"/>
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      白細(xì)胞介素10基因—1082A>G位點(diǎn)多態(tài)性與宮頸癌易感性的Meta分析

      2018-09-25 10:32:48郭沖朱潔
      關(guān)鍵詞:Meta分析多態(tài)性宮頸癌

      郭沖 朱潔

      [摘要] 目的 運(yùn)用Meta分析方法研究白細(xì)胞介素10(IL-10)基因單核苷酸多態(tài)性突變與宮頸癌發(fā)生的易感性。 方法 檢索PubMed、Embase、Web of SCI、中國(guó)知網(wǎng)和萬(wàn)方數(shù)據(jù)庫(kù)中從建庫(kù)至2017年12月31日有關(guān)IL-10基因-1082A>G位點(diǎn)多態(tài)性與宮頸癌易感性關(guān)聯(lián)的研究文獻(xiàn)。對(duì)符合納入標(biāo)準(zhǔn)的文獻(xiàn)進(jìn)行資料提取后,以O(shè)R值和95%及其可信區(qū)間為效應(yīng)指標(biāo),應(yīng)用STATA 14.0軟件進(jìn)行Meta分析,并對(duì)發(fā)表發(fā)生偏倚、敏感性和累積分析等進(jìn)行檢測(cè)。 結(jié)果 通過(guò)檢索,共納入13篇已發(fā)表文獻(xiàn),共計(jì)2311例宮頸癌患者和2491例正常對(duì)照。Meta分析結(jié)果表明,總?cè)巳褐蠭L-10 -1082A>G位點(diǎn)多態(tài)性與宮頸癌易感性之間有顯著的關(guān)聯(lián)(G vs. A:OR = 1.60,95%CI = 1.12~2.29,P = 0.01,I2 = 92.3%;AG vs. AA:OR = 1.34,95%CI = 1.04~1.74,P = 0.03,I2 = 65.9%;AG+GG vs. AA:OR = 1.58,95%CI = 1.11-2.25,P = 0.01,I2 = 84.4%)。在其次關(guān)于種族,對(duì)照組來(lái)源等因素的亞組分析中,本研究也表明IL-10基因-1082A>G位點(diǎn)突變可以增加宮頸癌發(fā)生的風(fēng)險(xiǎn)。 結(jié)論 IL-10基因-1082A>G位點(diǎn)多態(tài)性改變可能會(huì)增加宮頸癌的發(fā)病風(fēng)險(xiǎn)。

      [關(guān)鍵詞] 宮頸癌;白細(xì)胞介素10;多態(tài)性;Meta分析

      [中圖分類號(hào)] R737.33 [文獻(xiàn)標(biāo)識(shí)碼] A [文章編號(hào)] 1673-7210(2018)06(a)-0067-05

      [Abstract] Objective To investigate the association between interleukin-10 -1082A>G polymorphism and cervical cancer risk with a Meta-analysis. Methods The databases of PubMed, Embase, Web of SCI, CNKI and Wanfang databases were searched for the relevant literatures about the association between interleukin-10 -1082A>G polymorphism and cervical cancer risk from their inception to December 31st, 2017. The data of genotype distributions and other information were extracted in the selected studies. Odds ratio (OR) and 95% confidence interval (CI) were calculated with STATA 14.0 software. Publication bias, sensitivity and cumulative analyses were also applied. Results Thirteen published case-control studies including 2311 patients with cervical cancer and 2491 controls were selected. Overall, significant elevate association between IL-10 -1082A>G polymorphism and cervical cancer risk were found in this Meta-analysis (G vs. A: OR = 1.60, 95%CI = 1.12-2.29, P = 0.01, I2 = 92.3%; AG vs. AA: OR = 1.34, 95%CI = 1.04-1.74, P = 0.03, I2 = 65.9%; AG+GG vs. AA: OR = 1.58, 95%CI = 1.11-2.25, P = 0.01, I2 = 84.4%), and the same results were obtained in the subgroup analysis based on ethnicity and control design. Conclusion This Meta-analysis demonstrates that IL-10 -1082A>G polymorphism may be a risk factor for cervical cancer development.

      [Key words] Cervical cancer; Interleukin-10; Polymorphism; Meta-analysis

      宮頸癌是女性常見(jiàn)惡性腫瘤之一,臨床發(fā)病率較高,在女性惡性腫瘤中位居第二位,約占女性癌癥病例總數(shù)和癌癥死亡人數(shù)的8%[1-3]。細(xì)胞因子在上皮細(xì)胞的炎癥浸潤(rùn)和惡性轉(zhuǎn)化過(guò)程中起著關(guān)鍵作用[5-6]。白細(xì)胞介素-10(interleukin-10,IL-10)是一種多功能的細(xì)胞因子,在癌癥的發(fā)展中具有雙重作用,同時(shí)發(fā)揮了促癌(免疫抑制)和抑癌(抗血管生成)效應(yīng)[7-8]。

      基因多態(tài)性泛指發(fā)生于基因組內(nèi)單個(gè)核苷酸序列的改變,IL-10基因位于染色體1q31-32,包含多個(gè)單核苷酸多態(tài)性位點(diǎn)。IL-10基因-1082A>G(rs1800896)位點(diǎn)位于該基因的啟動(dòng)子區(qū)域,可以改變?cè)摶虻霓D(zhuǎn)錄進(jìn)程,調(diào)控 mRNA的表達(dá),影響IL-10多肽的表達(dá)水平,進(jìn)而改變相關(guān)疾病的易感性。

      2001年Stanczuk等[10]首次通過(guò)病例-對(duì)照研究發(fā)現(xiàn),在非洲人群中AG基因型的攜帶者可能會(huì)增加罹患宮頸癌的風(fēng)險(xiǎn)。其后又有大量的研究相繼發(fā)表,然而其研究結(jié)論并不一致。本研究擬通過(guò)用Meta分析研究方法,收集既往已經(jīng)發(fā)表的文獻(xiàn),綜合分析,探討IL-10基因-1082A>G位點(diǎn)多態(tài)性與宮頸癌發(fā)病風(fēng)險(xiǎn)的相關(guān)性。

      1 資料與方法

      1.1檢索策略

      在線檢索PubMed、Embase、Web of SCI、中國(guó)知網(wǎng)和萬(wàn)方數(shù)據(jù)庫(kù),收集國(guó)內(nèi)外公開(kāi)發(fā)表的關(guān)于IL-10 -1082A>G多態(tài)性與宮頸癌發(fā)病風(fēng)險(xiǎn)相關(guān)性的病例對(duì)照研究,檢索時(shí)限均為建庫(kù)至2017年12月30日,中文檢索詞包括“宮頸癌”“白細(xì)胞介素10”“多態(tài)性”;英文檢索詞包括“cervical cancer”“interleukin-10”“IL-10”“rs1800870”“polymorphism”,并通過(guò)對(duì)既往文獻(xiàn)中引文的查閱追溯法查找相關(guān)論文。

      1.2 納入及排除標(biāo)準(zhǔn)

      納入標(biāo)準(zhǔn):①文獻(xiàn)來(lái)自于國(guó)內(nèi)以及國(guó)外公開(kāi)發(fā)表的,關(guān)于宮頸癌的發(fā)生與IL-10基因突變的相關(guān)病例對(duì)照研究,文獻(xiàn)語(yǔ)種主要為中文和英文;②納入的文獻(xiàn)中包含的研究數(shù)據(jù)完整,或者可以通過(guò)文字提供的數(shù)據(jù)進(jìn)行推導(dǎo)演算;③當(dāng)同一研究主題或研究數(shù)據(jù)多次發(fā)表時(shí),以最新發(fā)表或最大數(shù)據(jù)量為準(zhǔn)。排除標(biāo)準(zhǔn):①非中英文的文獻(xiàn)報(bào)道;②病例報(bào)道、綜述、動(dòng)物及細(xì)胞學(xué)基礎(chǔ)研究;③數(shù)據(jù)不完整或無(wú)法演算出OR及95%可信區(qū)間(CI)。

      1.3 數(shù)據(jù)錄入及質(zhì)量評(píng)價(jià)

      由郭沖和朱潔獨(dú)立地提取研究論文中的相關(guān)數(shù)據(jù),交叉核對(duì),遇到不一致時(shí),通過(guò)論文核查,相互討論來(lái)解決分歧。納入信息有:文獻(xiàn)第一作者,論文發(fā)表年代,對(duì)照組來(lái)源,研究對(duì)象的國(guó)度(人種),各基因型數(shù)據(jù),各基因位點(diǎn)檢測(cè)方法,對(duì)照組人群的基因分析數(shù)據(jù)是否符合Hardy–Weinberg(HW)平衡。此外,應(yīng)用紐卡斯?fàn)?渥太華量表(NOS)對(duì)每項(xiàng)納入的原始研究的質(zhì)量進(jìn)行分析評(píng)價(jià),評(píng)分≥6分的即認(rèn)為是高質(zhì)量研究。

      1.4 統(tǒng)計(jì)學(xué)方法

      OR值和95%CI用于計(jì)算的IL-10 -1082 A>G位點(diǎn)突變和宮頸癌發(fā)生的風(fēng)險(xiǎn)強(qiáng)度,研究模型包括等位基因模型(G vs. A),共顯性模型(AG vs. AA 和 GG vs. AA),顯性模型(AG+GG vs. AA),和隱性模型(GG vs. AA+AG)。然后結(jié)合對(duì)照人群來(lái)源和人種等相關(guān)因素進(jìn)行亞組分析。采用χ2檢驗(yàn)評(píng)估合并數(shù)據(jù)的異質(zhì)性,若I2﹤40%,則認(rèn)為Meta分析的文獻(xiàn)同質(zhì)性較好,采用固定效應(yīng)模型,反之使用隨機(jī)效應(yīng)模型。運(yùn)用Egger's檢測(cè),并繪制漏斗圖(Begg's funnel plot)檢測(cè)發(fā)表偏倚,并采用敏感性分析和積累效應(yīng)分析統(tǒng)計(jì)納入各研究的一致性及統(tǒng)計(jì)趨勢(shì)。統(tǒng)計(jì)分析采用STATA 14.0軟件,雙側(cè)檢驗(yàn),以P < 0.05為差異有統(tǒng)計(jì)學(xué)意義。

      2 結(jié)果

      2.1 文獻(xiàn)檢索結(jié)果

      通過(guò)在線檢索,共發(fā)現(xiàn)相關(guān)文獻(xiàn)164篇,經(jīng)過(guò)逐步排除后,納入本次Meta分析的原始研究包括13篇文獻(xiàn)[10-22],包括2311例宮頸癌患者和2491例正常對(duì)照,其中7項(xiàng)研究來(lái)自于亞洲人群[11,14-16,18,21-22],4項(xiàng)研究來(lái)自歐洲人群[13,17,19-20],2項(xiàng)研究來(lái)自非洲人群[10,12]?;蚍中偷臋z測(cè)手段包括Taqman、ARMS-PCR、PCR-RFLP和PCR測(cè)序等技術(shù)。此外,有4項(xiàng)研究中包括的對(duì)照人群基因型分布數(shù)據(jù)偏離HW平衡[11-12,14,20],具體納入數(shù)據(jù)詳見(jiàn)表1。

      2.2 Meta分析結(jié)果

      如表2所示,Meta分析結(jié)果顯示IL-10-1082A>G位點(diǎn)突變和宮頸癌的發(fā)生之間有顯著的相關(guān)性(G vs. A:OR = 1.60,95%CI = 1.12~2.29,P = 0.01,I2 = 92.3%;AG vs. AA:OR = 1.34,95%CI = 1.04~1.74,P = 0.03,I2 = 65.9%;AG+GG vs. AA:OR = 1.58,95%CI = 1.11~2.25,P = 0.02,I2 = 84.4%)。在其后的亞組分析中,統(tǒng)計(jì)結(jié)果顯示,IL-10 1082A>G多態(tài)性和亞洲人群中宮頸癌的發(fā)生之間有顯著的相關(guān)性(G vs. A:OR = 2.41,95%CI = 1.26~4.60,P = 0.01,I2 = 93.3%;AG vs. AA:OR = 1.64,95%CI = 1.14~2.36,P = 0.01,I2 = 53.3%;GG vs. AA:OR = 3.75,95%CI = 1.21~11.61,P = 0.02, I2 = 85.2%;AG+GG vs. AA:OR = 2.28,95%CI = 1.27~4.10,P = 0.01,I2 = 84.6%;GG vs. AA+AG:OR = 2.94,95%CI = 1.08~8.03,P = 0.04,I2 = 83.7%),見(jiàn)圖1。此外,在基于對(duì)照組設(shè)計(jì)及基因檢測(cè)方法的亞組分析中,也有類似結(jié)果的發(fā)現(xiàn)(表2)。此外,納入的13項(xiàng)研究中,有6篇文獻(xiàn)的質(zhì)量評(píng)分≥6分,其余7項(xiàng)研究的質(zhì)量評(píng)分<6分,見(jiàn)表1。

      2.3 發(fā)表偏倚結(jié)果

      繪制的漏斗圖顯示,各基因型中納入研究的數(shù)據(jù)分布基本對(duì)稱,未發(fā)現(xiàn)明顯的偏倚存在。Egger's檢測(cè)結(jié)果進(jìn)一步支持以上結(jié)論(G vs. A:P = 0.12;AG vs. AA:P = 0.06;GG vs. AA:P = 0.34;AG+GG vs. AA:P = 0.03;GG vs. AA+AG:P = 0.46),提示納入的研究沒(méi)有明顯的發(fā)表偏倚存在。見(jiàn)圖2。

      2.4 積累效應(yīng)分析和敏感性分析

      依據(jù)納入研究的發(fā)表年代,進(jìn)行積累效應(yīng)分析,統(tǒng)計(jì)結(jié)果未見(jiàn)明顯的波動(dòng)和偏倚,見(jiàn)圖3。依據(jù)納入研究發(fā)布年份,進(jìn)行敏感性分析,統(tǒng)計(jì)結(jié)果表明各研究逐次排除后,OR值及其95%CI在各個(gè)基因分析模型中均未發(fā)生明顯的改變,見(jiàn)圖4。

      3 討論

      近30年來(lái),分子流行病學(xué)已經(jīng)證實(shí),宮頸癌以及各種婦科腫瘤的發(fā)生是多種致病因素相互作用的結(jié)果,環(huán)境因素的惡化,不潔生活習(xí)慣等與宮頸癌的發(fā)生密切相關(guān)。個(gè)體基因組學(xué)的突變,是導(dǎo)致人群差異及多樣性的重要因素,也是腫瘤易感性差異化的重要原因之一[23]。炎癥細(xì)胞因子在組織細(xì)胞由正常上皮向惡性腫瘤的轉(zhuǎn)化過(guò)程中起重要作用,這些細(xì)胞因子通過(guò)誘導(dǎo)血管生成、代償性細(xì)胞增殖、DNA損傷或基因突變的積累等途徑促進(jìn)這一過(guò)程的發(fā)生?;蛲蛔?,特別是啟動(dòng)子區(qū)的多態(tài)性,影響基因轉(zhuǎn)錄的過(guò)程,導(dǎo)致相應(yīng)基因的異常表達(dá)和蛋白質(zhì)功能的改變,從而影響個(gè)體對(duì)癌癥的易感性[24]。

      2001年以來(lái),分子流行病學(xué)的病例-對(duì)照研究開(kāi)始關(guān)注于IL-10基因啟動(dòng)子區(qū)-1082A>G位點(diǎn)多態(tài)性與宮頸癌風(fēng)險(xiǎn)之間的相關(guān)性。Singhal等[18]研究發(fā)現(xiàn),在印度人群中,攜帶AG和GG基因型人群與AA基因型相比,可顯著提高宮頸癌發(fā)展的風(fēng)險(xiǎn)(AG vs. AA:OR = 2.2,95%CI = 1.35~3.64;GG vs. AA:OR = 7.26,95%CI = 4.2~12.4)。Stanczuk等[10]和Matsumoto等[14]學(xué)者的研究也同樣發(fā)現(xiàn)IL-10 -1082A>G多態(tài)性可能會(huì)增加罹患宮頸癌的風(fēng)險(xiǎn)。然而,Zoodsma等[13]和于曉牧等[15]研究卻未能發(fā)現(xiàn)該位點(diǎn)的突變與宮頸癌的發(fā)生之間具有顯著的相關(guān)性?;谝陨涎芯康牟灰恢滦?,本次研究運(yùn)用Meta分析方法,通過(guò)對(duì)IL-10-1082A>G位點(diǎn)多態(tài)性及宮頸癌相關(guān)性研究系統(tǒng)地檢索,科學(xué)地篩查,全面地收集相關(guān)證據(jù),以期對(duì)二者之間的相關(guān)性做一較為明確的分析。眾所周知,Meta分析可以匯總多個(gè)研究的結(jié)果,擴(kuò)大研究樣本含量,避免由于樣本含量偏低導(dǎo)致的誤差,減少偏倚,增大統(tǒng)計(jì)學(xué)效應(yīng)。

      本次Meta分析,納入13項(xiàng)病例-對(duì)照研究,共計(jì)2311例宮頸癌患者和2491例正常對(duì)照,涵蓋歐洲、亞洲及非洲人群,具有廣泛的人群代表性,并且從對(duì)照組HW平衡,人種差異,對(duì)照組來(lái)源等多個(gè)因素進(jìn)行亞組分析,獲得更加細(xì)致的結(jié)果。然而,本次Meta分析仍然存在一定的不足:①總體納入研究數(shù)據(jù)相對(duì)較少,特別是針對(duì)歐洲人群及非洲人群的數(shù)據(jù),可能會(huì)增加研究結(jié)果的不確定性;②本次研究?jī)H限于 -1082A>G位點(diǎn),相同基因其他區(qū)位的多態(tài)性位點(diǎn)未能深入研究;③囿于原始數(shù)據(jù)的不足,煙酒史等危險(xiǎn)因素的統(tǒng)計(jì)未能充分展開(kāi),環(huán)境-基因相互作用未能得到清晰的解析。

      綜上所述,本次Meta分析表明IL-10基因 -1082A>G位點(diǎn)的多態(tài)性改變可能會(huì)增加罹患宮頸癌的風(fēng)險(xiǎn),與亞洲人群宮頸癌的易感性有顯著的關(guān)聯(lián)。但是該結(jié)論尚需大樣本、高質(zhì)量的研究加以驗(yàn)證,以明確IL-10-1082A>G多態(tài)性位點(diǎn)與宮頸癌的相互關(guān)系。

      [參考文獻(xiàn)]

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      [2] Smith HO,Tiffany MF,Qualls CR,et al. The rising incidence of adenocarcinoma relative to squamous cell carcinoma of the uterine cervix in the United States--a 24-year population-based study [J]. Gynecol Oncol,2000,78(2):97-105.

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      [5] Lee CH,Chang JS,Syu SH,et al. IL-1beta promotes malignant transformation and tumor aggressiveness in oral cancer [J]. J Cell Physiol,2015,230(4):875-884.

      [6] Liu H,Antony S,Roy K,et al. Interleukin-4 and interleukin-13 increase NADPH oxidase 1-related proliferation of human colon cancer cells [J]. Oncotarget,2017,8(24):38 113-38 135.

      [7] Cecil DL,Holt GE,Park KH,et al. Elimination of IL-10-inducing T-helper epitopes from an IGFBP-2 vaccine ensures potent antitumor activity [J]. Cancer Res,2014,74(10):2710-2718.

      [8] Howell WM,Rose-Zerilli MJ. Cytokine gene polymorphisms,cancer susceptibility,and prognosis [J]. Journal of Nutrition,2007,137(1):194S-199S.

      [9] Eskdale J,Kube D,Tesch H,et al. Mapping of the human IL10 gene and further characterization of the 5' flanking sequence [J]. Immunogenetics,1997,46(2):120-128.

      [10] Stanczuk GA,Sibanda EN,Perrey C,et al. Cancer of the uterine cervix may be significantly associated with a gene polymorphism coding for increased IL-10 production [J]. Int J Cancer,2001,94(6):792-794.

      [11] Roh JW,Kim MH,Seo SS,et al,Lee HP. Interleukin-10 promoter polymorphisms and cervical cancer risk in Korean women [J]. Cancer Lett,2002,184(1):57-63.

      [12] Govan VA,Carrara HR,Sachs JA,et al. Ethnic differences in allelic distribution of IFN-g in South African women but no link with cervical cancer [J]. J Carcinog,2003,2(1):3.

      [13] Zoodsma M,Nolte IM,Schipper M,et al. Interleukin-10 and Fas polymorphisms and susceptibility for (pre)neoplastic cervical disease [J]. Int J Gynecol Cancer,2005, 15(3):282-290.

      [14] Matsumoto K,Oki A,Satoh T,et al. Interleukin-10 -1082 gene polymorphism and susceptibility to cervical cancer among Japanese women [J]. Jpn J Clin Oncol,2010, 40(11):1113-1116.

      [15] 于曉牧,馬冬,吳尚青,等.IL-10基因多態(tài)性與宮頸癌相關(guān)性的研究[J].中華醫(yī)院感染學(xué)雜志,2011,21(20):239-241.

      [16] Wang Q,Zhang C,Walayat S,et al. Association between cytokine gene polymorphisms and cervical cancer in a Chinese population [J]. Eur J Obstet Gynecol Reprod Biol,2011,158(2):330-333.

      [17] Barbisan G,Perez LO,Contreras A,et al. TNF-alpha and IL-10 promoter polymorphisms,HPV infection,and cervical cancer risk [J]. Tumour Biol,2012,33(5):1549-1556.

      [18] Singhal P,Kumar A,Bharadwaj S,et al. Association of IL-10 GTC haplotype with serum level and HPV infection in the development of cervical carcinoma [J]. Tumour Biol,2015,36(4):2287-2298.

      [19] Zidi S,Gazouani E,Stayoussef M,et al. IL-10 gene promoter and intron polymorphisms as genetic biomarkers of cervical cancer susceptibility among Tunisians [J]. Cytokine,2015,76(2):343-347.

      [20] Torres-Poveda K,Burguete-Garcia AI,Bahena-Roman M,et al. Risk allelic load in Th2 and Th3 cytokines genes as biomarker of susceptibility to HPV-16 positive cervical cancer:a case control study [J]. BMC Cancer,2016, 16:330.

      [21] Zeng YY,Chen XY,Tian KG,et al. The correlation of interleukin-10 gene polymorphism and HPV infection and cervical lesions in Dongguan region (China) [J]. J Clin Exper Med,2015,14:636-639.

      [22] Bai CY,Shi XY,He J,et al. Association between IL-10 genetic variations and cervical cancer susceptibility in a Chinese population [J]. Genet Mol Res,2016,15(3):38.

      [23] Liu H,Antony S,Roy K,et al. Interleukin-4 and interleukin-13 increase NADPH oxidase 1-related proliferation of human colon cancer cells [J]. Oncotarget,2017,8(24):38 113-38 135.

      [24] Niu YM,Du XY,Cai HX,et al. Increased risks between Interleukin-10 gene polymorphisms and haplotype and head and neck cancer:a Meta-analysis [J]. Sci Rep,2015, 27(5):17149.

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