付越 陳成 謝夢(mèng)洲 雷慧珺 李亮 李豐
〔摘要〕 胃癌(gastric cancer, GC)是一種發(fā)病率和死亡率都居高不下的惡性腫瘤。微小核糖核酸(microRNA, miRNA)是腫瘤發(fā)生和發(fā)展過(guò)程的重要調(diào)控因子,在胃癌等多種腫瘤的致癌機(jī)制、腫瘤發(fā)生環(huán)境和抑癌作用等方面,miRNA通過(guò)影響相關(guān)細(xì)胞信號(hào)通路和調(diào)控靶向基因的方式發(fā)揮了重要的調(diào)控作用。中醫(yī)藥通過(guò)調(diào)節(jié)miRNA干預(yù)胃癌的作用機(jī)制可從以下幾個(gè)方面進(jìn)行分析:中醫(yī)藥通過(guò)miRNA介導(dǎo)胃癌腫瘤細(xì)胞內(nèi)外環(huán)境的變化;中醫(yī)藥可以針對(duì)胃癌特異性miRNA進(jìn)行有效干預(yù);中醫(yī)藥通過(guò)miRNA調(diào)節(jié)機(jī)體的免疫功能。通過(guò)總結(jié)miRNA對(duì)胃癌發(fā)揮作用的主要途徑和分析中醫(yī)藥調(diào)節(jié)miRNA干預(yù)胃癌的機(jī)制,明確了miRNA在胃癌診斷、治療中的重要性,為中醫(yī)藥防治胃癌提供有價(jià)值的參考。
〔關(guān)鍵詞〕 胃癌;微小核糖核酸;中醫(yī)藥;細(xì)胞信號(hào)通路;靶向基因;腫瘤微環(huán)境
〔中圖分類號(hào)〕R273? ? ? ?〔文獻(xiàn)標(biāo)志碼〕A? ? ? ? 〔文章編號(hào)〕doi:10.3969/j.issn.1674-070X.2022.05.029
Research progress of traditional Chinese medicine intervention in gastric
cancer by regulating MicroRNA
FU Yue CHEN Cheng XIE Mengzhou LEI Huijun LI Liang LI Feng
(1. Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; 2. Hunan Provincial Key Laboratory of TCM Diagnostics of Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; 3. Key Laboratory of TCM Cardiopulmonary Disease Syndrome Differentiation & Medicine Diet Therapy of Hunan University of Chinese Medicine, Changsha, Hunan 410208, China; 4. Changsha Medical University, Changsha, Hunan 410219, China)
〔Abstract〕 gastric cancer (GC) is a malignant tumor with high morbidity and mortality. MicroRNA (miRNA) is an essential regulatory factor in tumor genesis and development. By affecting related cellular signaling pathways and manipulating the expression of target genes, miRNA plays an important regulatory role in the mechanism of carcinogenesis, tumorigenic environment and tumor inhibition of various tumors including GC. The mechanism of traditional Chinese medicine (TCM) intervening in GC through miRNA can be analyzed from the following aspects: TCM mediates the changes in the internal and external environment of GCr cells via miRNA; TCM can effectivelty intervene against specific miRNA of GC; TCM regulates immune function through miRNA. By summarizing the main ways of miRNA playing a role in GC and analyzing the mechanism of TCM regulating miRNA intervening in GC, the importance of miRNA in the diagnosis and treatment of GC is clarified, which provides a valuable reference for the prevention and treatment of GC by TCM.
〔Keywords〕 gastric cancer; microRNA; traditional Chinese medicine; cellular signaling pathway; targeted gene; tumor microenvironment
胃癌(gastric cancer, GC)是一種分子和表型具有高度異質(zhì)性的惡性腫瘤[1],其危險(xiǎn)因素主要包括幽門螺桿菌感染、人類皰疹病毒4型(epstein-barr virus, EBV)感染[2]、家族及遺傳因素、環(huán)境暴露因素等[3]。微小核糖核酸(microRNA, miRNA)是一類小的非編碼RNA,在基因表達(dá)中起關(guān)鍵性的調(diào)控作用。miRNA通過(guò)調(diào)控相關(guān)細(xì)胞信號(hào)通路以及靶向參與細(xì)胞遷移、侵襲和增殖的基因影響胃癌的發(fā)生發(fā)展進(jìn)程,在胃癌的診斷、治療、預(yù)后評(píng)價(jià)中可以作為主要生物標(biāo)志物。因此,miRNA在胃癌等腫瘤的發(fā)生、轉(zhuǎn)移以及耐藥性的產(chǎn)生中發(fā)揮著重要作用,其表達(dá)譜分析可能成為包括腫瘤在內(nèi)的多種疾病的重要診斷和預(yù)后工具[4-5]。
1 miRNA對(duì)胃癌發(fā)揮作用的途徑
1.1? miRNA通過(guò)調(diào)節(jié)細(xì)胞信號(hào)通路的表達(dá)影響胃癌
miRNA是調(diào)控基因表達(dá)和影響功能發(fā)揮的重要因素之一,細(xì)胞信號(hào)通路則是調(diào)控細(xì)胞分裂、增殖、凋亡及其所包含基因表達(dá)的關(guān)鍵效應(yīng)機(jī)制。因此,miRNA和細(xì)胞信號(hào)通路的相互協(xié)同作用對(duì)于維系機(jī)體正常有序運(yùn)行有十分重要的意義。細(xì)胞信號(hào)通路能將細(xì)胞受到的多種激素、生長(zhǎng)因子和細(xì)胞因子等刺激信號(hào)傳入細(xì)胞內(nèi),引起一系列酶促反應(yīng)[6],參與調(diào)控miRNA轉(zhuǎn)錄、加工成熟、翻譯等過(guò)程;miRNA可以通過(guò)調(diào)節(jié)靶向細(xì)胞信號(hào)通路中的特定蛋白質(zhì)的表達(dá),影響細(xì)胞信號(hào)通路的信號(hào)級(jí)聯(lián)放大,并通過(guò)不同細(xì)胞信號(hào)通路間的相互作用使機(jī)體應(yīng)對(duì)外界環(huán)境干擾時(shí)能作出反饋調(diào)節(jié)[7]。miRNA和細(xì)胞信號(hào)通路之間的相互作用調(diào)節(jié)著細(xì)胞信號(hào)通路上關(guān)鍵成分的表達(dá),如果細(xì)胞信號(hào)傳導(dǎo)失調(diào),細(xì)胞增殖、轉(zhuǎn)移和凋亡等細(xì)胞生理過(guò)程則受到影響,這些由miRNA特異調(diào)控的腫瘤細(xì)胞相關(guān)信號(hào)傳導(dǎo)通路上的異常組分,可能是癌癥診治的潛在選擇靶點(diǎn)[8]。
細(xì)胞外信號(hào)調(diào)節(jié)激酶/絲裂原活化蛋白激酶(extracellular signal-regulated kinase/mitogen-activated protein kinase, ERK/MAPK)通路是參與胃癌增殖、侵襲、遷移和轉(zhuǎn)移的重要途徑之一[9]。多項(xiàng)研究證實(shí),不同的miRNA可以通過(guò)該信號(hào)途徑調(diào)控胃癌的發(fā)生和發(fā)展。例如,miRNA-128通過(guò)介導(dǎo)相應(yīng)的ERK/MAPK1調(diào)控因子來(lái)抑制該信號(hào)通路蛋白的表達(dá),參與胃癌的發(fā)病機(jī)制[10]。miRNA-95在胃癌細(xì)胞中呈現(xiàn)高表達(dá),而抑制miRNA-95可以下調(diào)MAPK蛋白的表達(dá),從而降低癌細(xì)胞的增殖并抑制腫瘤細(xì)胞的上皮間充質(zhì)轉(zhuǎn)化(epithelial-mesenchymal transition, EMT)過(guò)程[11]。miRNA-206通過(guò)介導(dǎo)MAPK2信號(hào)通路促進(jìn)胃癌細(xì)胞凋亡并抑制順鉑耐藥性的產(chǎn)生[12]。miRNA還可以通過(guò)調(diào)控胃癌細(xì)胞中磷酸酶及張力蛋白同源物/磷脂酰肌醇-3激酶/蛋白激酶B(phosphates and tensin homologue deleted on chromosome ten/phosphoinositide 3-kinase/protein kinase B, PTEN/PI3K/PKB)信號(hào)通路影響腫瘤組織的形成和腫瘤進(jìn)展,典型代表有miRNA-29家族、miRNA-221、miRNA-21等[13]。miRNA-301a-3p在胃癌缺氧環(huán)境外泌體中的表達(dá)顯著升高,同時(shí)與缺氧誘導(dǎo)因子-1α(hypoxia-inducible factor-1α, HIF-1α)呈正相關(guān),在胃癌腹膜轉(zhuǎn)移患者中也呈現(xiàn)高表達(dá)。因此,miRNA-301a-3p/HIF-1α信號(hào)通路可以作為胃癌預(yù)測(cè)因子和胃癌轉(zhuǎn)移后的潛在治療靶點(diǎn)[14]。miRNA-200c和miRNA-139在胃潰瘍中的敏感性和特異性最高,其表達(dá)在胃癌患者血清中顯著下調(diào),與炎癥標(biāo)志物成纖維細(xì)胞生長(zhǎng)因子18/成纖維細(xì)胞生長(zhǎng)因子受體2(fibroblast growth factor-18/fibroblast growth factor receptor 2, FGF-18/FGFR2)存在顯著相關(guān)性。因此,miRNA-200c/miRNA-139和FGF-18/FGFR2信號(hào)通路參與了炎癥向胃癌進(jìn)展的過(guò)程[15]。
1.2? miRNA通過(guò)調(diào)節(jié)靶向下游基因影響胃癌
miRNA可以通過(guò)抑制下游信使核糖核酸(messenger RNA, mRNA)的翻譯或促進(jìn)mRNA降解的方式來(lái)調(diào)控靶向基因的表達(dá),它們可以作為抑癌因子或致癌因子,參與腫瘤細(xì)胞的增殖、遷移和侵襲等。因此,miRNA及其識(shí)別的靶點(diǎn)mRNA為腫瘤診斷、治療和預(yù)后提供了潛在的生物標(biāo)志物。例如,miRNA-96-5p通過(guò)下調(diào)轉(zhuǎn)錄因子叉頭框蛋白Q1(fork head box Q1, FoxQ1)來(lái)抑制胃癌細(xì)胞的增殖、遷移和上皮間充質(zhì)轉(zhuǎn)化[16]。miRNA-12129通過(guò)靶向沉默信息調(diào)節(jié)蛋白1(sirtuin 1, SIRT1)調(diào)節(jié)細(xì)胞周期進(jìn)程并抑制胃癌細(xì)胞增殖[17]。miRNA-146b-5p通過(guò)靶向腫瘤壞死因子受體相關(guān)因子6(tumor necrosis factor receptor-associated factor 6, TRAF6)抑制胃癌的惡性發(fā)展,其表達(dá)水平與胃癌的淋巴轉(zhuǎn)移和遠(yuǎn)處轉(zhuǎn)移率呈負(fù)相關(guān)[18]。miRNA-484的過(guò)表達(dá)可抑制胃癌細(xì)胞的皮下致瘤性,但細(xì)胞趨化因子配體18(C-C chemokine ligand 18, CCL-18)過(guò)表達(dá)后,miRNA-484的抑制作用被阻斷,提示miRNA-484可以通過(guò)靶向CCL-18基因從而抑制胃癌的增殖[19]。miRNA-212在胃癌組織呈現(xiàn)表達(dá)下調(diào),其異常表達(dá)通過(guò)直接靶向性別決定基因-區(qū)域轉(zhuǎn)錄因子4(sex determining region Y-box transcriptim factor 4, SOX4)來(lái)抑制腫瘤細(xì)胞的增殖并誘導(dǎo)細(xì)胞凋亡,低水平的 miRNA-212可以作為胃癌檢測(cè)和不良預(yù)后的潛在生物標(biāo)志物[20]。
2 中醫(yī)藥調(diào)節(jié)miRNA干預(yù)胃癌的作用機(jī)制
中醫(yī)古籍中并未記載“胃癌”這一病名,但是綜合胃癌出現(xiàn)的惡心嘔吐、食欲減退、上腹痛、持續(xù)性腹部不適、黑便、消瘦等癥狀,可將其歸屬于中醫(yī)學(xué)“反胃”“胃脘痛”“噎膈”“便血”等范疇。
現(xiàn)代醫(yī)學(xué)研究認(rèn)為,大多數(shù)疾病的發(fā)生與基因表達(dá)受到環(huán)境因素與其他因素的交互影響引起調(diào)控異常密切相關(guān)[21-22]。miRNA作為具有調(diào)控功能的RNA,其調(diào)節(jié)同樣受到來(lái)自人體內(nèi)部變化和外部整體環(huán)境改變的共同影響,同時(shí)miRNA參與機(jī)體的一系列生理和病理進(jìn)程[23]。中醫(yī)理論體系的核心理念包括人體與自然環(huán)境、社會(huì)環(huán)境是一個(gè)整體的內(nèi)涵,認(rèn)為環(huán)境對(duì)人體的影響是疾病發(fā)生的關(guān)鍵因素之一。中醫(yī)藥在預(yù)防、診治疾病時(shí)注重對(duì)人體整體狀態(tài)的調(diào)節(jié),不拘泥于疾病個(gè)別現(xiàn)象和局部表征而施治。因此,現(xiàn)代基因理論與中醫(yī)藥體系均認(rèn)同疾病的發(fā)生發(fā)展離不開內(nèi)、外整體環(huán)境的影響,胃癌的發(fā)生也是機(jī)體與整體環(huán)境共同作用的結(jié)果,中醫(yī)藥防治胃癌的機(jī)制分析和研究方向可以結(jié)合miRNA介導(dǎo)機(jī)體內(nèi)、外環(huán)境這一方面進(jìn)行思考。
另一方面,來(lái)源于腫瘤中的miRNA參與并形成有利于腫瘤生長(zhǎng)、轉(zhuǎn)移、免疫逃逸和化學(xué)耐藥的微環(huán)境,即腫瘤微環(huán)境(tumor microenvironment, TME)[24]。miRNA的表達(dá)具有組織特異性和動(dòng)態(tài)變化性,即腫瘤發(fā)生在不同部位、或處于不同發(fā)展階段,其TME所包含的miRNA種類和數(shù)量也是有差異的。因此,特異性的miRNA標(biāo)志物可以作為診治腫瘤的重要靶點(diǎn)。中醫(yī)認(rèn)為,胃癌的發(fā)生發(fā)展是由于機(jī)體脾胃運(yùn)化功能受損,氣血津液代謝障礙,同時(shí)遭到多種病理因素侵襲而形成的。胃癌發(fā)展過(guò)程中產(chǎn)生不同的臨床表現(xiàn),大都因?yàn)槭艿讲煌±硪蛩?、存在不同部位病變或處于不同病理時(shí)期等影響所致[25],與上述腫瘤微環(huán)境中miRNA表現(xiàn)出的特性一致。中醫(yī)藥治療胃癌的關(guān)鍵步驟之一就是針對(duì)不同病理變化制定不一樣的診療方案。因此,找到特異性的miRNA是預(yù)防和診治胃癌的重要環(huán)節(jié),也是中醫(yī)藥干預(yù)胃癌的科學(xué)依據(jù)之一[26]。
除此之外,miRNA異常表達(dá)還可以通過(guò)重新編程胃癌中的免疫微環(huán)境[27],或者調(diào)控胃癌中免疫細(xì)胞不同程度的浸潤(rùn)[28]等方式,參與胃癌發(fā)生發(fā)展過(guò)程中的免疫功能調(diào)節(jié)。因此,免疫功能在miRNA干預(yù)胃癌的機(jī)制中占據(jù)著重要地位。中醫(yī)理論強(qiáng)調(diào)“正氣存內(nèi),邪不可干”的重要性,正氣充足是人體維持正常功能活動(dòng)的重要基礎(chǔ),具有維護(hù)自身機(jī)能平衡與穩(wěn)定的作用。正氣充足與否也是腫瘤發(fā)生發(fā)展轉(zhuǎn)歸的關(guān)鍵條件。因此,中醫(yī)藥通過(guò)介導(dǎo)miRNA調(diào)節(jié)免疫功能的方式達(dá)到干預(yù)胃癌的目的是可行的。
2.1? 中藥單體化合物通過(guò)調(diào)節(jié)miRNA干預(yù)胃癌
研究表明,中藥及其活性成分可抑制胃癌細(xì)胞生長(zhǎng)、增強(qiáng)機(jī)體免疫力、增強(qiáng)化療藥物的敏感性、改善癌因性疲勞及骨髓抑制等不良反應(yīng),對(duì)胃癌的預(yù)防、治療及預(yù)后有著積極作用和獨(dú)特優(yōu)勢(shì)[29-30]。中藥單體化合物是從單味中藥中提取出來(lái)的,經(jīng)過(guò)分離純化后得到的有效成分,具有成分清晰、效用價(jià)值明確、藥效穩(wěn)定等優(yōu)點(diǎn)。目前,針對(duì)中藥單體化合物通過(guò)調(diào)節(jié)miRNA干預(yù)胃癌的研究也越發(fā)豐富起來(lái)。例如,從姜黃中提取出來(lái)的β-欖香烯是一種廣譜抗癌的新型植物源性藥物,通過(guò)抑制miRNA-1323表達(dá)、調(diào)控表皮生長(zhǎng)因子受體(epidermal growth factor receptor, EGFR)-ERK/PKB通路上的原癌基因和基質(zhì)金屬蛋白酶來(lái)抑制胃癌細(xì)胞轉(zhuǎn)移,減少轉(zhuǎn)移性腫瘤結(jié)節(jié)生成,可作為胃癌的潛在抗轉(zhuǎn)移藥物[31]??鄥⒅械闹匾钚猿煞挚鄥A,除了具有抗炎、抗過(guò)敏、抗纖維化的作用之外,還能抑制miRNA-93-5p表達(dá)、增加下游靶基因核蛋白水平,抑制胃癌細(xì)胞增殖、侵襲和遷移[32]。石菖蒲、莪術(shù)、天南星等多種常用中藥材里廣泛存在的姜黃素具有抗腫瘤、抗氧化等作用,它可以通過(guò)上調(diào)miRNA-34a表達(dá)、降低胃癌細(xì)胞中B細(xì)胞淋巴瘤-2基因(B-cell lymphoma-2, Bcl-2)和周期蛋白依賴性激酶4(cyclin-dependent kinases 4, CDK4)的水平,從而抑制胃癌細(xì)胞的增殖并誘導(dǎo)細(xì)胞凋亡[33]。藏紅花素是藏紅花的主要生物活性化合物之一,具有明顯的抗腫瘤作用,通過(guò)提高miRNA-320表達(dá)、krüppel樣轉(zhuǎn)錄因子5(krüppel-like factor 5, KLF5)/HIF-1α信號(hào)通路上關(guān)鍵基因的表達(dá),進(jìn)而抑制胃癌細(xì)胞的EMT、遷移和侵襲[34]。藤黃酸的抗腫瘤作用機(jī)制主要是通過(guò)顯著增加miRNA-26a-5p的表達(dá),介導(dǎo)Wnt(wingless與Int1基因的合稱)信號(hào)通路中Wnt5a蛋白的負(fù)調(diào)控,從而誘導(dǎo)細(xì)胞凋亡、抑制腫瘤細(xì)胞增殖并抑制新生血管生成[35]。
2.2? 中藥復(fù)方通過(guò)調(diào)節(jié)miRNA干預(yù)胃癌
中藥復(fù)方藥味豐富、成分多樣,君、臣、佐、使各司其職,具有增強(qiáng)療效的優(yōu)點(diǎn)。因此,對(duì)于中藥復(fù)方的深入研究不僅可以挖掘中醫(yī)藥理論的科學(xué)內(nèi)涵,還能提高中藥復(fù)方制劑活性成分的有效性和內(nèi)在質(zhì)量的可控性[36]。中醫(yī)方劑通過(guò)調(diào)節(jié)miRNA發(fā)揮療效是基于各種成分、多個(gè)靶點(diǎn)共同作用的結(jié)果。研究發(fā)現(xiàn),新加良附方(高良姜、香附、穿山龍)可能通過(guò)調(diào)控miRNA-34a/SIRT1/p53(一種腫瘤抑制基因,因蛋白條帶標(biāo)尺出現(xiàn)在53KDa處而得名)通路、miRNA-34a相關(guān)靶蛋白和半胱天冬氨酸水解蛋白酶(cysteinyl aspartate-specific protease, Caspase)凋亡通路,抑制胃癌細(xì)胞增殖遷移,誘導(dǎo)其凋亡,從而抑制移植瘤生長(zhǎng),改善機(jī)體基本狀態(tài),提高生存率[37]?;瞪⒔Y(jié)方(半夏、天南星、浙貝母、牡蠣、全蝎、地龍、守宮、烏賊骨、炙甘草、木蝴蝶、鳳凰衣、刺猬皮、穿山甲、蜈蚣、藤梨根)能上調(diào)miRNA-506-3p的表達(dá)水平,通過(guò)調(diào)節(jié)ERK-2、基質(zhì)金屬蛋白酶9的表達(dá),最終上調(diào)E-鈣黏蛋白(E-cadherin)表達(dá)從而抑制原位瘤的生長(zhǎng)[38]。健脾清化化瘀湯(黨參、丹參、莪術(shù)、白術(shù)、茯苓、甘草、大黃、蒲公英、白花蛇舌草、三七、土茯苓、陳皮、半夏)可以通過(guò)下調(diào)胃黏膜miRNA-21表達(dá),進(jìn)一步調(diào)控PTEN下游信號(hào)通路,阻斷胃癌前病變向胃癌進(jìn)展[39]。消痞顆粒(黨參、百合、烏藥、香櫞皮、丹參、三七、莪術(shù)、蒲公英、白花蛇舌草)也通過(guò)抑制miRNA-21異常表達(dá),調(diào)控PTEN/PI3K/PKB信號(hào)通路來(lái)干預(yù)胃癌前病變的發(fā)生[40]。養(yǎng)正散結(jié)湯(黃芪、半枝蓮、佛手、姜黃、天南星、山慈菇、山楂)對(duì)胃癌發(fā)揮作用的可能機(jī)制之一是抑制miRNA-7靶向EGFR介導(dǎo)的胃癌細(xì)胞增殖并誘導(dǎo)其凋亡[41]。
3 總結(jié)與展望
綜合以上闡述,通過(guò)抑制或增強(qiáng)胃癌相關(guān)miRNA表達(dá),調(diào)控相關(guān)細(xì)胞信號(hào)通路和靶基因,發(fā)揮直接抑制胃癌細(xì)胞增殖及轉(zhuǎn)移、約束胃癌組織生長(zhǎng)、誘導(dǎo)胃癌細(xì)胞凋亡,或通過(guò)增強(qiáng)機(jī)體自身免疫功能來(lái)抵御胃癌侵襲等,對(duì)胃癌的防治起到了雙向調(diào)節(jié)的積極作用。中醫(yī)藥通過(guò)調(diào)節(jié)miRNA干預(yù)胃癌的作用機(jī)制可能與以下方面有關(guān):中醫(yī)藥可以通過(guò)調(diào)節(jié)miRNA來(lái)影響胃癌發(fā)生發(fā)展的內(nèi)、外環(huán)境;特異性miRNA標(biāo)志物是中醫(yī)藥干預(yù)胃癌的重要依據(jù)之一;中醫(yī)藥通過(guò)miRNA調(diào)節(jié)機(jī)體免疫功能干預(yù)胃癌發(fā)展進(jìn)程。多個(gè)中藥單體化合物如β-欖香烯、苦參堿、姜黃素、藏紅花素、藤黃酸等,中藥復(fù)方如新加良附方、化痰散結(jié)方、健脾清化化瘀湯、消痞顆粒、養(yǎng)正散結(jié)湯等,均被證實(shí)可以通過(guò)影響胃癌相關(guān)信號(hào)通路或調(diào)控miRNA下游靶基因達(dá)到抑制胃癌發(fā)展。miRNA轉(zhuǎn)錄組學(xué)與中醫(yī)藥理論之間的密切聯(lián)系存在著深遠(yuǎn)意義,中醫(yī)藥可以通過(guò)調(diào)節(jié)miRNA干預(yù)胃癌的防治逐漸成為了國(guó)內(nèi)外研究的趨勢(shì)和共識(shí)[42]。
雖然目前未能完全闡明中醫(yī)藥通過(guò)調(diào)節(jié)miRNA干預(yù)胃癌的機(jī)制,但是運(yùn)用新技術(shù)和新方法找到針對(duì)不同個(gè)體顯著特異性和精確靈敏度的miRNA標(biāo)志物仍然是后續(xù)研究中的關(guān)鍵環(huán)節(jié),同時(shí)繼續(xù)深入探索中醫(yī)藥干預(yù)胃癌的miRNA作用機(jī)制,進(jìn)一步拓展基礎(chǔ)研究和臨床試驗(yàn),找到更有效的診斷和治療手段,也是今后努力的方向和目標(biāo)。
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(本文編輯? 李路丹)