CN114836537B - Rbm24在结直肠癌的诊断和治疗中的用途 - Google Patents
Rbm24在结直肠癌的诊断和治疗中的用途 Download PDFInfo
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- CN114836537B CN114836537B CN202110137668.0A CN202110137668A CN114836537B CN 114836537 B CN114836537 B CN 114836537B CN 202110137668 A CN202110137668 A CN 202110137668A CN 114836537 B CN114836537 B CN 114836537B
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Abstract
本发明公开了Rbm24在结直肠癌的诊断和治疗中的用途。
Description
技术领域
本发明属于生物医药领域,具体地,本发明涉及Rbm24在结直肠癌的诊断和治疗中的用途。
背景技术
结直肠癌的发病率和死亡率位居中国癌症疾病前列,其诊断、分子分型和治疗是临床急需解决的重大问题。目前结直肠癌可以通过包括病理活检、影像学检查、实验室化验以及基因测序等方法获得诊断和辅助诊断。但是早期的结直肠癌症状不明显,患者通常没有就医行为,因此失去了早期诊断和治疗的机会。大多数结直肠癌患者确诊的时候已经处于疾病晚期,并且发生了远处转移。在确诊的患者中,临床上的各种指标不能较好的预测患者的治疗效果以及预后和生存时间,特异性和敏感性较差。因此需要新的指标以协助结直肠癌的分子分型以及预测患者的治疗效果、预后和生存时间。
目前结直肠癌的一线治疗仍旧以手术结合化疗和放疗为主,同时辅以靶向治疗、免疫治疗、生物治疗和姑息治疗等。总的来说,中国的结直肠癌的治疗效果不佳,5年生存率虽然略有上升,但是总体效果仍旧不尽人意,并且副作用发生率较高,严重影响了患者的生存质量,因此开发新的治疗手段迫在眉睫。
发明内容
针对现有技术存在的问题,本发明提供了用于结直肠癌诊断的标志物Rbm24及其在结直肠癌治疗中的用途。
在一个方面,本发明提供了Rbm24在结直肠癌中作为生物标记物的用途。
在一个具体实施方案中,本发明提供了测定Rbm24水平的物质在制备用于诊断结直肠癌的产品中的用途。具体地,其中所述检测Rbm24表达水平的试剂包括检测Rbm24基因mRNA表达水平的试剂,和/或检测Rbm24蛋白表达水平的试剂。在一个具体实施方案中,所述检测Rbm24基因mRNA表达水平的试剂包括实时定量PCR中使用的引物,和/或探针。在一个具体实施方案中,其中所述检测Rbm24蛋白表达水平的试剂包括针对Rbm24蛋白的抗体。在一个具体实施方案中,所述用于诊断结直肠癌的产品包括试剂盒、芯片或试纸。
在第二个方面,本发明提供了Rbm24在预防和治疗结直肠癌中作为药物靶点的用途。在一个具体实施方案中,本发明提供了上调Rbm24基因表达或Rbm24基因所编码的Rbm24蛋白表达的试剂在制备用于治疗结直肠癌的药物中的用途。
RBM24是一种RNA结合蛋白。本发明人发现:在结直肠癌患者的临床样本中RBM24的表达显著下调,并且高表达RBM24的患者生存时间显著高于RBM24低表达的患者。在小鼠体内的实验证实,RBM24敲除会导致小鼠肠道增生异常,并最终发生自发性的结直肠腺瘤。这些结果提示RBM24可作为结直肠癌的诊断标志物。
本发明的第一目的是提供Rbm24用于结直肠癌诊断的用途。
通过检测RBM24在人类CRC组织和配对的相邻组织中的表达发现:与邻近组织相比,人CRC组织中RBM24的表达显著降低,这与TNM分期和患者的生存时间相关(N=36)。然而,RBM24与CRC患者的其他临床特征(包括年龄和性别)之间没有关联。免疫组化结果显示RBM24在CRC肿瘤组织中的表达显著降低。qPCR和蛋白印迹结果显示,人CRC肿瘤组织中RBM24的表达显著下调。
构建了条件性的RBM24基因敲除小鼠模型,将他莫昔芬(每天100mg/kg,连续5天)腹腔注射到8周的C57BL/6小鼠(N=32)中,以诱导全身性RBM24敲除。给WT小鼠注射相同剂量的他莫昔芬作为对照组。使用蛋白质印迹、qPCR分析和免疫荧光验证了敲除效率。结果表明,与WT小鼠相比,RBM24基因敲除小鼠肠道中的BrdU(5-溴脱氧尿嘧啶核苷)阳性细胞显著增加。HE染色结果表明RBM24敲除小鼠结肠上皮增厚。在敲除6个月后,观察到小鼠发生结直肠腺瘤,并且结直肠的长度显著长于野生型小鼠。
本发明的第二目的是提供了Rbm24用于治疗结直肠癌的用途。
为了测试RBM24在CRC细胞增殖中的作用,进行了CCK-8分析。我们发现RBM24的过表达能够抑制细胞增殖。这提示RBM24在体外抑制了CRC细胞的生长。
另外,进行了划痕实验、Transwell迁移和侵袭测定以确定RBM24在CRC细胞迁移和侵袭中的作用。结果证实,与对照细胞相比,RBM24的过表达受抑制结直肠癌细胞系(HCT116)的迁移和侵袭。使用PI3K-IN-6(10nM)或MK-2206(20nM)处理则进一步抑制了细胞增殖迁移和侵袭的能力。
数据证实RBM24过表达增加5-FU或顺铂诱导的细胞凋亡。在RBM24过表达后,再使用PI3K-IN-6或MK-2206治疗进一步促进了5-FU或顺铂诱导的CRC细胞凋亡。
在本申请中,“结肠癌”是指在结肠组织(大肠最长的部分)形成的癌和/或瘤。大多数结肠癌是腺癌(起源于产生和释放粘液和其它液体的细胞中的癌症)。“直肠癌”是指在直肠组织(肛门前大肠最后几英寸的部分)形成的癌和/或瘤。在本发明文中的“结直肠癌”是指在结肠或直肠中出现的癌。
本文中的“样品”是从对象处分离出的生物样品,其可以包括:例如,但不限于,全血、血清、血浆、血细胞、内皮细胞、组织活检、淋巴液、腹水、间质液(也称为“细胞外液”,包括在细胞间隙中发现的液体)、骨髓、脑脊液(CSF)、唾液、粘液、痰液、汗液、尿液或任何其它分泌物、排泄物或其它体液。
本发明文中的“受试者”优选哺乳动物。哺乳动物可以是人、非人的灵长类动物、小鼠、大鼠、狗、猫、马或牛,但不限于这些实例。非人的哺乳动物可以有利地用作代表结直肠癌动物模型的受试者。受试者可以为雄性或雌性。受试者可以是之前诊断或鉴定为患有结直肠癌者,并且任选地,但不必须是已经进行结直肠癌治疗者。受试者还可以是未患结直肠癌者。受试者还可以是诊断或鉴定为患有结直肠癌但是由于接受一种或多种结直肠癌治疗而表现出疾病改善(例如,肿瘤尺寸降低)者。作为另外一种选择,受试者还可以是之前未被诊断或鉴定为患有结直肠癌者。例如,受试者可以是表现出一种或多种结直肠癌风险因素者,或未表现出结直肠癌风险因素的受试者或无结直肠癌症状的受试者。受试者还可以是患有结直肠癌或具有发展结直肠癌风险者。
可以测量测试样品中Rbm24蛋白、肽、核酸、多态性、代谢物或其它分析物的量并与正常对照水平进行比较。术语“正常对照水平”是指通常在如下对象中出现的一种或多种Rbm24蛋白、核酸、多态性、代谢物或其他分析物或Rbm24指数的水平:未患结直肠癌并且不可能患结直肠癌的对象,例如,相对于从年轻对象的纵向研究中所收集的样品,该年轻对象被监测直到高龄并且未发现发展出结直肠癌或相关疾病后遗症,如溃疡性结肠炎、炎症性肠病和/或克罗恩病。正常对照水平可以是范围或指数。作为另外一种选择,正常对照水平可以是之前测试的对象的模式数据库。与正常对照水平相比,来源于对象的一种或多种Rbm24蛋白、核酸、多态性、代谢物或其它分析物样品水平的变化可以表明对象患有结直肠癌或具有发展结直肠癌的风险。相反,当预防性地施用该方法时,与正常对照水平相比,来源于对象的一种或多种Rbm24蛋白、核酸、多态性、代谢物或其它分析物样品具有相似的水平可以表明对象未患有结直肠癌或者无发展结直肠癌的风险或风险很低。
参考值可以指从癌症状态已知(即,诊断或鉴定为患有结直肠癌,或未诊断或鉴定为患有结直肠癌)的对照对象或人群获得的数值。参考值可以是指标值或基准值,例如本文所定义的“正常对照水平”。参考样品或指标值或基准值可以取自或来源于已经接受抗癌治疗、放射治疗或化疗的一个或多个对象;或取自或来源于具有发展结直肠癌低风险的一个或多个对象;或取自或来源于由于接受治疗而表现出结直肠癌风险因素改善的对象。作为另外一种选择,参考样品或指标值或基准值可以取自或来源于未接受过抗癌治疗、放射治疗或化疗的一个或多个对象。例如,样品可以从接受结直肠癌初始治疗和结直肠癌的后续治疗以监测治疗进展的对象中采集。参考值还可以包括来源于结直肠癌人群研究的风险预测算法或计算指数的数值,如本文所公开的那些数值。参考值还可以包括来自已患有息肉、溃疡性结肠炎、炎症性肠病和/或克罗恩病但未患有结直肠癌的对象或人群的数值。
由本发明的方法测量的Rbm24的水平或量(可以是“有效量”)的差异可以包括与正常对照水平、参考值、指标值或基准值相比Rbm24水平或量的升高或降低。相对于参考值,Rbm24量的升高或降低可以表明结直肠癌的进展;结直肠癌的延缓、进展、发展或减轻;发展结直肠癌或其相关并发症风险的升高或降低。升高或降低可以指示一种或多种结直肠癌治疗方案的成功;或可以指示结直肠癌风险因素的改善或消退。升高或降低可以为,例如,参考值或正常对照水平的至少5%、至少10%、至少15%、至少20%、至少25%、至少30%、至少35%、至少40%、至少45%或至少50%。
可以使用本领域内已知的任何方法在RNA水平上测量本文所公开的基因表达。例如,使用特异地识别一种或多种这些序列的探针的Northern杂交分析可用于测定基因表达。作为另外一种选择,可以使用逆转录PCR测定法(RT-PCR)测量表达,例如,使用对差异表达序列特异的引物。还可以使用,例如,其它靶扩增法(例如,TMA、SDA、NASBA)或信号扩增法(例如,bDNA)等来定量RNA。优选地,通过实时PCR检测本发明生物标志物的表达水平,如还描述在PCT/US02/38806(以WO03/048377公开;Therianos等人,(2004)Am.J.Pathol.164(3):795-806,它们的内容以引用方式并入本文)。
作为另外一种选择,可以测量Rbm24蛋白和核酸的代谢物或片段。可以用本领域的技术人员所已知的多种方法检测代谢物,包括:折射率光谱(RI)、紫外光谱法(UV)、荧光分析、放射化学分析、近红外光谱(near-IR)、核磁共振光谱(NMR)、光散射分析(LS)、质谱、热解质谱法、比浊法、色散型拉曼光谱(dispersive Raman spectroscopy)、气相色谱-质谱联用、液相色谱-质谱联用、基质辅助激光解析电离飞行时间质谱(MALDI-TOF)、表面加强激光解析电离化(SELDI)质谱、结合质谱的离子喷射光谱、毛细血管电泳、NMR和IR检测。(参见,WO 04/056456和WO04/088309,它们的整体以引用方式并入)。在这点上,可以使用上述检测方法或技术人员已知的其它方法测量其它Rbm24分析物。
附图说明
图1:IHC检测结直肠癌患者癌旁组织和肿瘤组织中RBM24的表达的代表性图片。
图2:IHC检测结直肠癌患者癌旁组织和肿瘤组织中RBM24的表达的评分统计结果。
图3:本发明提供的qPCR检测的RBM24在结直肠癌患者肿瘤组织中下调。
图4:本发明提供的qPCR检测的RBM24在结直肠癌患者肿瘤组织中的表达与TNM分期相关。
图5:qPCR检测的RBM24在结直肠癌患者肿瘤组织中的表达与患者生存时间相关。
图6:蛋白印迹检测的RBM24在结直肠癌患者肿瘤组织中下调。
图7:WB检测RBM24敲除小鼠敲除效率。
图8:qPCR检测RBM24敲除小鼠敲除效率。
图9:RBM24敲除之后,HE染色表明肠道显著增生。
图10:RBM24敲除之后,肠道长度显著增加。
图11:RBM24敲除之后,HE染色表明肠道出现自发性肿瘤结节。
图12:RBM24抑制人结直肠癌细胞HCT116的增殖。
图13:RBM24与小分子抑制剂协同抑制人结直肠癌细胞HCT116的增殖。
图14:在人结直肠癌细胞中过表达RBM24提升5-Fu诱导的细胞凋亡比例。
图15:在人结直肠癌细胞中过表达RBM24提升顺铂诱导的细胞凋亡比例。
图16:RBM24过表达后,小分子抑制剂处理协同提升药物诱导的细胞凋亡比例。
图17:RBM24抑制人结直肠癌细胞HCT116的迁移和侵袭。
图18:RBM24与小分子抑制剂协同抑制人结直肠癌细胞HCT116的迁移。
图19:RBM24与小分子抑制剂协同抑制人结直肠癌细胞HCT116的迁移和侵袭。
具体实施方式
本文使用的术语具有与本发明相关领域的普通技术人员通常理解的含义。诸如“一种”,“一个”和“该”的术语不旨在仅指单数实体,而是包括特定实施例可以用于说明的一般类别。本文中的术语用于描述本发明的具体实施方案,但是它们的用法不限制本发明,除非在权利要求中概述。
实施例
实施例1.临床结直肠癌患者样本中RBM24的表达。
1.1临床样品收集。
方法:在提前获得医院伦理委员会批准和患者知情同意的情况下,在厦门大学附属第一医院收集来自36名受试者的肿瘤样本和对应的癌旁样本(临床信息如表1所示)。为了有资格纳入本研究,每一位患者都被单独评估,且必须符合以下条件方可被纳入本研究:1)手术前未经过临床放疗或化疗等处理;2)经过临床病理诊断为结直肠癌;3)先前没有其他重大疾病史;4)患者基本资料齐全,包括性别、年龄、吸烟史、家族史、手术时间、手术方式、病理诊断、TNM分期、肿瘤分化程度、淋巴结转移情况、目前状况、无病生存时间、总生存时间等临床病例参数。要求进行手术切除,获取临床样本后,马上进行液氮速冻,随后将样品储存在-80℃冰箱中直到使用。
结果:总共获得符合入组标准的临床结直肠癌患者36例,详细临床信息如表1所示。
表1:36例结直肠癌患者的临床病理特征。
1.2免疫组化结果显示,与邻近组织相比,人CRC组织中RBM24的表达显著降低。
方法:将肠道组织放入4%的多聚甲醛中固定48小时以上。PBS冲洗3次,每次5分钟。然后用10%蔗糖溶液脱水,随后依次使用20%和30%蔗糖溶液梯度脱水。OCT包埋后,使用液氮速冻。使用冰冻切片机(Leica)切片,厚度5um,切好的玻片暂存于-80℃冰箱保存。如前所述获取组织切片后,添加H2O2常温孵育10分钟。PBS冲洗后进行抗原修复,使用山羊血清封闭1h。加入特异性一抗(RBM24抗体,abcam:ab94567,1:300,4℃孵育过夜。随后加入HRP偶联的二抗,室温孵育1小时。PBS冲洗后,加入DAB显色液,室温反应5分钟。苏木素染色液复染30秒后梯度酒精脱水并封片拍照。
结果:免疫组化结果显示,与邻近组织相比,人CRC组织中RBM24的表达显著降低(图1;图2)。
1.3 RBM24的mRNA在结直肠癌组织中显著下调
方法:取适量的组织或细胞样本,按照试剂盒说明书添加TRIzol试剂,并进行后续的抽提操作,获取总RNA。使用紫外分光光度计检测总RNA的浓度和纯度,A260/A280的比值为1.6-2.0视为质量合格。随后使用逆转录试剂盒合成cDNA,并按照qPCR的荧光染料试剂盒说明书进行操作,添加相应的引物检测靶基因的相对表达量。最终结果GAPDH基因作为内参进行标准化。
结果:我们发现RBM24的mRNA在结直肠癌组织中显著下调(图3)。
1.4 RBM24表达越低,TNM分期越高。
方法:如上所述搜集临床样本及相对应的临床信息后,检测RBM24在每一位患者中的表达水平,将不同TNM分期的患者的RBM24表达水平整理后进行统计分析。
结果:TNM分期为I/II期的患者组织中RBM24的表达水平显著高于TNM分期为III/IV期的患者(N=36),即TNM分期越高,则RBM24表达越低(图4)。
1.5 RBM24低表达的患者生存时间更短。
方法:如上所述搜集临床样本及相对应的临床信息后,检测RBM24在每一位患者中的表达水平,将所有患者分为RBM24高表达或低表达两组。使用K-M统计方法分析RBM24表达水平和生存时间之间的关系。
结果:RBM24的表达水平与患者的生存时间相关(N=36),即RBM24高表达的患者生存时间更长,RBM24低表达的患者生存时间更短(图5)。
1.6蛋白检测RBM24在结直肠癌组织中显著下调。
方法:将适量组织放入300ul裂解液中(提前加入1%的PMSF),剪碎组织,研磨,超声破碎后12000×g离心15分钟,取上清。使用BCA法检测蛋白浓度后,加入5×的LoadingBuffer,100℃煮沸10分钟,放入-20℃保存。配制SDS-PAGE积层胶和分离胶。每孔加载的30ug蛋白样品,在适宜的条件下进行电泳分离。随后将蛋白通过湿转法转移至PVDF膜上,5%的脱脂牛奶封闭1小时后,进行一抗孵育,4度摇床过夜。抗体浓度为RBM24抗体(Abcam:ab94567,1:1000);β-actin抗体:santa cruz,SC-47778,1:3000)。TBST洗膜后使用HRP偶联的二抗常温孵育1小时。二抗为羊抗鼠(博士德生物,BA1075,1:2000)或羊抗兔(博士德生物,BA1054,1:2000)。洗膜后添加化学发光试剂盒工作液进行曝光,获取蛋白条带。β-actin或者GAPDH视为内参。
结果:我们发现RBM24在结直肠癌组织中显著下调(图6)。
实施例2.Rbm24敲除小鼠发生自发性结直肠癌。
2.1 RBM24敲除小鼠构建。
方法:通过在RBM24基因的第二和第三外显子两端插入Loxp位点,进一步使用Cre-Loxp系统,在C57BL/6背景上构建他莫昔芬诱导的全身RBM24敲除小鼠。通过使用RBM24的特异性引物对基因组DNA进行PCR反应,证实了他莫昔芬诱导后RBM24的遗传破坏,通过qPCR和蛋白印迹分析显示了结肠组织中RBM24的mRNA和蛋白水平显著降低。将所有小鼠维持在无特定病原体的条件下,以12:12小时的明/暗周期进行饲养,并接受常规食物和随意饮水。所有涉及动物水平的实验程序均按照厦门大学实验动物中心批准的动物规程进行操作。
结果:基因组PCR结果显示RBM24的基因组受到破坏,初步证实RBM24敲除小鼠构建成功。后续证实RBM24的mRNA和蛋白在敲除小鼠中显著下调(图7;图8)。
2.2 HE染色证实RBM24敲除后小鼠肠道异常增生。
方法:用颈椎脱臼法处死小鼠,将小鼠结肠和直肠取出,20ml注射器抽取PBS冲洗3次,确保肠内容物冲洗干净,将肠道放在操作台上,用剪刀沿肠道长径剪开,展平肠道,观察肠道肿物,拍照存档。将肠道组织放入4%的多聚甲醛中固定48小时以上。PBS冲洗3次,每次5分钟。然后用10%蔗糖溶液脱水,随后依次使用20%和30%蔗糖溶液梯度脱水。OCT包埋后,使用液氮速冻。使用冰冻切片机(Leica)切片,厚度5um,切好的玻片暂存于-80℃冰箱保存。如前所述获取组织切片后,苏木素染液染色(60℃)60s,1%盐酸乙醇处理3s。自来水冲洗15分钟,切片返蓝后使用伊红液染色60s,蒸馏水冲洗2s,进一步使用乙醇二甲苯依次脱水,中性树胶封片拍照。
结果:HE染色结果表明,RBM24敲除小鼠结肠上皮增厚。在敲除6个月后,我们观察到小鼠发生结直肠腺瘤,并且结直肠的长度显著长于野生型小鼠(图10;图11)。
实施例3.Rbm24过表达抑制结直肠癌细胞恶性表型。
3.1 RBM24过表达抑制HCT116细胞增殖。
方法:人结直肠癌HCT116细胞购自中国科学院上海细胞库,并由本实验室进行冻存。细胞培养在含有10%的FBS和1%青链霉素混合液的DMEM培养基中,培养条件为37℃,5%的CO2和饱和湿度的条件中。
为了构建RBM24过表达的细胞株,我们扩增了RBM24的CDS区并克隆进入pcDNA3.1质粒的多克隆位点,构建RBM24瞬时表达的质粒。同时我们将RBM24的CDS区克隆进入慢病毒包装的核心质粒中,并包装成为了慢病毒颗粒。使用慢病毒颗粒感染细胞48h后,使用1ug/ml的嘌呤霉素筛选72h,获得纯净的RBM24过表达细胞株。使用qPCR和蛋白印迹检测RBM24的表达水平以确定过表达效率。
各组细胞按照1×105个细胞每孔的密度接种至96孔板中,过夜培养后,在相应的时间内添加体积分数为10%的CCK-8试剂,继续孵育2h后,使用酶标仪在450nm处检测溶液的吸光度值,无细胞的培养基和CCK-8试剂作为阴性对照,绘制细胞增值曲线。
结果:我们发现RBM24的过表达能够抑制细胞增殖。这提示RBM24在体外抑制了CRC细胞的生长(图12)。使用PI3K-IN-6或MK-2206处理则进一步抑制了细胞增殖的能力(图13)。
3.2 RBM24过表达提升化疗药物诱导的HCT116的细胞凋亡。
方法:将各组细胞培养至对数生长期,以每孔5×105个细胞/孔的密度接种于6孔培养板中适应培养过夜后,继续培养细胞至汇合度为50%-60%。使用顺铂或者不使用顺铂处理相应时间后,胰酶消化收集细胞,PBS洗涤2次,弃上清。使用75%的乙醇固定细胞30min,洗涤并重悬细胞后,使用PI染料和RNA酶A避光处理细胞30min,再次洗涤细胞,重悬细胞时将细胞密度调整至1×106个细胞/ml。使用流式细胞仪检测细胞周期分布和凋亡比率,用FlowJo软件对结果进行分析。结果:数据证实RBM24过表达增加5-FU或顺铂诱导的细胞凋亡(图14;图15)。在RBM24过表达后,再使用PI3K-IN-6或MK-2206治疗进一步促进了5-FU或顺铂诱导的CRC细胞凋亡(图16)。
3.3 RBM24过表达抑制HCT116迁移和侵袭。
方法:如上所述培养各组细胞,为了进行迁移实验,各组细胞使用无血清培养基重悬后,调整细胞密度为5×105个/ml。将200ul细胞悬液添加到Transwell小室的上腔,在下腔添加500ul的完全培养基。上下腔组装完成后,培养板置于细胞培养箱中继续孵育12h。取出上腔后,使用棉签擦除聚碳酸酯膜上层未迁移的细胞,使用75%的乙醇固定细胞10min。使用0.1%的结晶紫染液于37℃染色30min后,对迁移细胞进行拍照。每组至少选取个5个视野进行迁移细胞数目的统计分析。
为了进行侵袭实验,预先在Transwell小室的上腔中添加100ul浓度为5mg/ml的基质胶溶液,37℃至少孵育30min后,吸弃上清,将细胞悬液添加进入基质胶上,随后进行上述操作,获取细胞侵袭的结果。
结果:与对照细胞相比,RBM24的过表达抑制结直肠癌细胞系(HCT116)的迁移和侵袭(图17)。使用PI3K-IN-6或MK-2206处理则进一步抑制了细胞增殖迁移和侵袭的能力(图18;图19)。
Claims (6)
1.检测Rbm24表达水平的试剂在制备用于诊断结直肠癌的产品中的用途。
2.根据权利要求1所述的用途,其中所述检测Rbm24表达水平的试剂包括检测Rbm24基因mRNA表达水平的试剂,和/或检测Rbm24蛋白表达水平的试剂。
3.根据权利要求2所述的用途,其中所述检测Rbm24基因mRNA表达水平的试剂包括实时定量PCR中使用的引物,和/或探针。
4.根据权利要求2所述的用途,其中所述检测Rbm24蛋白表达水平的试剂包括针对Rbm24蛋白的抗体。
5.根据权利要求1所述的用途,其中所述产品包括试剂盒、芯片或试纸。
6.上调Rbm24基因表达或Rbm24基因所编码的Rbm24蛋白表达的试剂在制备用于治疗结直肠癌的药物中的用途。
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