WO2019000146A1 - 一种人程序性死亡受体1基因的siRNA及其应用 - Google Patents
一种人程序性死亡受体1基因的siRNA及其应用 Download PDFInfo
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Definitions
- the present invention belongs to the field of molecular genetics, and in particular to a siRN capable of inhibiting human programmed death receptor 1
- Lung cancer is one of the most common malignancies in the world. In China, the incidence and mortality of lung cancer are the highest among malignant tumors, which are 53.57/100,000 and 45.57/100,000 respectively, which seriously threaten the health of the people.
- NSCLC Non-small cell lung cancer
- Most patients have advanced diagnosis, and their treatment is limited. The 5-year survival rate is only 2%.
- research on tumor immunotherapy has advanced by leaps and bounds: in addition to immune surveillance to eliminate tumor cells, the immune system in the body also promotes tumor immune escape at certain stages, playing an extremely important role in tumorigenesis and development.
- RNA interference RNA interference
- RNAi small interfering RNA
- the cDNA sequence of the human PD-1 gene was obtained from GenBank, according to the basic principle of the siRNA target sequence, the needle A 19 nt siRNA was designed for it:
- the siPDl sequence is as follows:
- Antisense strand 5,- UCUAAGAACCAUCCUGGCC-3' (SEQ ID NO: 2).
- the siPD1 provided by the invention has the advantages of high interference efficiency, high and specific inhibition of PD-1 gene expression, and can be used as a powerful tool for preparing a medicament for treating diseases related to PD-1 gene expression abnormality.
- FIG. 1 is a schematic diagram showing the results of quantitative PCR detection of PD-1 gene expression levels after transfection of siurpl cells with Jurkat cells.
- Jurkat cells purchased from ATCC
- DMEM complete medium containing 10% fetal bovine serum
- plated 6-well plates at a ratio of 150,000 cells/well, and cultured at 37 ° C, 5% CO 2 for 18 h.
- Cell transfection was performed using the Lipofectamine 3000 Transfection Kit (Invitrogen) according to the product instructions.
- Transfected sputum, transfected A375 cells with lOO pmol siPDl, the ratio of siRNA to liposome was 100 pmol: 10 ⁇ .
- Reverse Transcription Reverse transcription was performed using FastQuant RT Super Mix.
- Quantitative PCR was carried out, and the reaction system was 20 ⁇ , and 1 L cDNA was added as a template for each reaction.
- the reaction procedure is: (1) 95 °C 30 s, (2) 95 °C 5s, (3) 60 °C 30s, (2)-(3), 40 cycles. With GAPDH as the internal reference, the results are shown in Figure 1.
- the quantitative PCR primers used are shown in Table 1:
- the mRNA expression level of the PD-1 gene was significantly decreased in the Jurkat cells transfected with siPD1, which indicated that the siPD1 of the present invention can efficiently and specifically inhibit the PD-1 gene.
- the siPD1 provided by the invention has the advantages of high interference efficiency, high and specific inhibition of PD-1 gene expression, and can be used as a powerful tool for preparing a medicament for treating diseases related to PD-1 gene expression abnormality.
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Abstract
提供一种高效特异性地抑制PD-1基因的mRNA表达水平的siRNA,其可用于制备治疗PD-1基因表达异常相关疾病的药物。
Description
发明名称:一种人程序性死亡受体 1基因的 siRNA及其应用 技术领域
[0001] 本发明属于分子遗传学领域, 尤其涉及一种能抑制人程序性死亡受体 1的 siRN
A及其应用。
背景技术
[0002] 肺癌是世界上最常见的恶性肿瘤之一。 在我国, 肺癌的发病率、 死亡率均高居 恶性肿瘤之首, 分别为 53.57/10万、 45.57/10万, 严重威胁着国民的健康。 非小 细胞肺癌 (non-small cell lung cancer, NSCLC) 约占肺癌的 84%, 大部分患者就 诊吋已属晚期, 其治疗手段比较局限, 5年生存率仅为 2%。 近年来肿瘤免疫治疗 研究突飞猛进: 机体免疫系统除了有免疫监视清除肿瘤细胞作用, 在某些阶段 还促进肿瘤免疫逃逸, 在肿瘤发生、 发展过程中扮演极其重要的角色。
技术问题
[0003] 研究显示程序性死亡分子 1 (programmed death 1, PD-l) /PD-1配体 (PD-1 ligand, PD-L1) 信号通路的激活可导致免疫抑制性肿瘤微环境形成, 使肿瘤细 胞逃避机体免疫监视和杀伤, 而阻断 PD-1/PD-L1信号通路可以逆转肿瘤免疫微 环境, 增强内源性抗肿瘤免疫效应。 因此, 对 PD-1在肺癌治疗中所起的作用及 其机制的研究非常重要, 需要进一步深入研究。
[0004] RNA干扰(RNA interference, RNAi)现象最早是由 Jorgensen等在发现的, 它 是一种高效、 特异性强的基因阻断技术, 近年来发展迅速, 很快就成为功能基 因组研究的有力工具, 可高效、 特异地抑制人 PD-1基因表达, 进而为其功能研 究打下基础。
问题的解决方案
技术解决方案
[0005] 本发明的目的在于提供一种基于 RNAi技术的针对人 PD-1基因 mRNA的小分子 干扰 RNA (siRNA) 。
[0006] 从 GenBank获得人 PD-1基因的 cDNA序列, 根据 siRNA靶序列的基本原则, 针
对其设计了一条 19 nt的 siRNA: siPDl序列如下:
[0007] 正义链: 5,- GGCCAGGAUGGUUCUUAGA -3, (SEQ ID NO: 1)
[0008] 反义链: 5,- UCUAAGAACCAUCCUGGCC-3' (SEQ ID NO: 2) 。
发明的有益效果
有益效果
[0009] 本发明提供的 siPDl具有干扰效率高, 可高效、 特异地抑制 PD-1基因表达的优 点, 可作为有力工具应用于制备治疗 PD-1基因表达异常相关疾病的药物。
对附图的简要说明
附图说明
[0010] 图 1为 Jurkat细胞转染 siPDl后定量 PCR检测 PD-1基因表达水平的结果示意图。
实施该发明的最佳实施例
本发明的最佳实施方式
[0011] 下面结合附图与具体实施例对本发明做进一步的说明。 以下实施例中所使用的 技术, 包括 PCR扩增与检测、 细胞转染、 RNA提取等分子生物学技术, 以及细 胞培养、 检测技术等, 除非特别说明, 均为本领域内的技术人员已知的常规技 术; 所使用的仪器设备、 试剂和细胞系等, 除非是本说明书特别注明, 均为一 般本领域的研究和技术人员可以通过公共途径获得的。
[0012] 实施例一靶向 PD-1基因的 siRNA寡核苷酸序列的设计
[0013] 在 GenBank査找到 PD-1的 mRNA全序列, 从 PD-1基因起始密码子 AUG下游幵始 , 搜索 AA序列, 其 3'端相邻 19 nt序列作为候选靶点, 从中选择 GC含量在 40-50%的 siRNA序列, 经 BLAST同源性比对证实特异性后应用 RNA structure 4.4 软件对靶 mRNA序列的二级结构进行评估, 最后获得靶核苷酸序列 siPDl , 其正 义链序列如 SEQ ID NO: 1, 反义链序列如 SEQ ID NO: 2所示。
[0014] 实施例二 siRNA转染 Jurkat细胞。
[0015] Jurkat细胞 (购自 ATCC) , 用 DMEM完全培养基 (含 10%胎牛血清) 培养, 按照 15万个 /孔的比例铺 6孔板, 于 37°C、 5% C02培养 18 h。 用 Lipofectamine 3000转染试剂盒(Invitrogen)进行细胞转染, 方法按照产品说明。
转染吋, 用 lOO pmol siPDl转染 A375细胞, siRNA与脂质体比例为 100 pmol: 10 μ 。
[0016] 实施例三定量 PCR检测平 PD-1基因表达水平
[0017] 提取总 RNA: 使用 QIAGEN RNeasy Mini Kit提取正常和转染 siPDl的 PD-1细胞 的总 RNA。
[0018] 逆转录: 使用 FastQuant RT Super Mix (天根生化) 进行逆转录。
[0019] 定量 PCR: 使用 SYBR Premix Ex Taq (Tli RNaseH Plus) (大连宝生物)
进行定量 PCR, 检测, 反应体系为 20 μί, 每个反应加入 1 L cDNA作为模板。 反应程序为: (1)95 °C 30 s, (2)95 °C 5s, (3)60°C 30s, (2)-(3), 40个循环。 同吋 以 GAPDH为内参, 结果如图 1所示, 使用的定量 PCR引物如表 1所示:
[0020] 如图 1所示, 转染 siPDl后的 Jurkat细胞, PD-1基因的 mRNA表达水平与正常 Jurk at细胞相比显著下降, 说明本发明的 siPDl能够高效特异性抑制 PD-1基因的表达
[0021] 以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明, 不能认 定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通技术 人员来说, 在不脱离本发明构思的前提下, 还可以做出若干简单推演或替换, 都应当视为属于本发明的保护范围。
工业实用性
[0022] 本发明提供的 siPDl具有干扰效率高, 可高效、 特异地抑制 PD-1基因表达的优 点, 可作为有力工具应用于制备治疗 PD-1基因表达异常相关疾病的药物。
Claims
[权利要求 1] 一种 RNA干扰片段, 其特征在于, 所述 RNA干扰片段的序列如下:
正义链: 5,- GGCCAGGAUGGUUCUUAGA -3, (SEQ ID NO: 1) 反义链: 5,- UCUAAGAACCAUCCUGGCC -3, (SEQ ID NO: 2)
[权利要求 2] 权利要求 1中所述的 RNA干扰片段的应用,
其特征在于制备治疗 PD-1基因表达异常相关疾病的药物。
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Cited By (14)
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WO2021024020A1 (en) | 2019-08-06 | 2021-02-11 | Astellas Pharma Inc. | Combination therapy involving antibodies against claudin 18.2 and immune checkpoint inhibitors for treatment of cancer |
WO2022008519A1 (en) | 2020-07-07 | 2022-01-13 | BioNTech SE | Therapeutic rna for hpv-positive cancer |
WO2022135667A1 (en) | 2020-12-21 | 2022-06-30 | BioNTech SE | Therapeutic rna for treating cancer |
WO2022136266A1 (en) | 2020-12-21 | 2022-06-30 | BioNTech SE | Therapeutic rna for treating cancer |
WO2022135666A1 (en) | 2020-12-21 | 2022-06-30 | BioNTech SE | Treatment schedule for cytokine proteins |
WO2022203090A1 (en) | 2021-03-25 | 2022-09-29 | Astellas Pharma Inc. | Combination therapy involving antibodies against claudin 18.2 for treatment of cancer |
WO2023285552A1 (en) | 2021-07-13 | 2023-01-19 | BioNTech SE | Multispecific binding agents against cd40 and cd137 in combination therapy for cancer |
WO2023057534A1 (en) | 2021-10-06 | 2023-04-13 | Genmab A/S | Multispecific binding agents against pd-l1 and cd137 in combination |
WO2023061930A1 (en) | 2021-10-11 | 2023-04-20 | BioNTech SE | Therapeutic rna for lung cancer |
WO2023083439A1 (en) | 2021-11-09 | 2023-05-19 | BioNTech SE | Tlr7 agonist and combinations for cancer treatment |
WO2023218046A1 (en) | 2022-05-12 | 2023-11-16 | Genmab A/S | Binding agents capable of binding to cd27 in combination therapy |
WO2024115725A1 (en) | 2022-12-01 | 2024-06-06 | BioNTech SE | Multispecific antibody against cd40 and cd137 in combination therapy with anti-pd1 ab and chemotherapy |
WO2024126457A1 (en) | 2022-12-14 | 2024-06-20 | Astellas Pharma Europe Bv | Combination therapy involving bispecific binding agents binding to cldn18.2 and cd3 and immune checkpoint inhibitors |
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Cited By (18)
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WO2021024020A1 (en) | 2019-08-06 | 2021-02-11 | Astellas Pharma Inc. | Combination therapy involving antibodies against claudin 18.2 and immune checkpoint inhibitors for treatment of cancer |
WO2021025177A1 (en) | 2019-08-06 | 2021-02-11 | Astellas Pharma Inc. | Combination therapy involving antibodies against claudin 18.2 and immune checkpoint inhibitors for treatment of cancer |
WO2022008519A1 (en) | 2020-07-07 | 2022-01-13 | BioNTech SE | Therapeutic rna for hpv-positive cancer |
WO2022135667A1 (en) | 2020-12-21 | 2022-06-30 | BioNTech SE | Therapeutic rna for treating cancer |
WO2022136257A1 (en) | 2020-12-21 | 2022-06-30 | BioNTech SE | Therapeutic rna for treating cancer |
WO2022136266A1 (en) | 2020-12-21 | 2022-06-30 | BioNTech SE | Therapeutic rna for treating cancer |
WO2022135666A1 (en) | 2020-12-21 | 2022-06-30 | BioNTech SE | Treatment schedule for cytokine proteins |
WO2022136255A1 (en) | 2020-12-21 | 2022-06-30 | BioNTech SE | Treatment schedule for cytokine proteins |
WO2022203090A1 (en) | 2021-03-25 | 2022-09-29 | Astellas Pharma Inc. | Combination therapy involving antibodies against claudin 18.2 for treatment of cancer |
WO2023285552A1 (en) | 2021-07-13 | 2023-01-19 | BioNTech SE | Multispecific binding agents against cd40 and cd137 in combination therapy for cancer |
WO2023057534A1 (en) | 2021-10-06 | 2023-04-13 | Genmab A/S | Multispecific binding agents against pd-l1 and cd137 in combination |
WO2023061930A1 (en) | 2021-10-11 | 2023-04-20 | BioNTech SE | Therapeutic rna for lung cancer |
WO2023083439A1 (en) | 2021-11-09 | 2023-05-19 | BioNTech SE | Tlr7 agonist and combinations for cancer treatment |
WO2023083868A1 (en) | 2021-11-09 | 2023-05-19 | BioNTech SE | Tlr7 agonist and combinations for cancer treatment |
WO2023218046A1 (en) | 2022-05-12 | 2023-11-16 | Genmab A/S | Binding agents capable of binding to cd27 in combination therapy |
WO2024115725A1 (en) | 2022-12-01 | 2024-06-06 | BioNTech SE | Multispecific antibody against cd40 and cd137 in combination therapy with anti-pd1 ab and chemotherapy |
WO2024126457A1 (en) | 2022-12-14 | 2024-06-20 | Astellas Pharma Europe Bv | Combination therapy involving bispecific binding agents binding to cldn18.2 and cd3 and immune checkpoint inhibitors |
WO2024209072A1 (en) | 2023-04-06 | 2024-10-10 | Genmab A/S | Multispecific binding agents against pd-l1 and cd137 for treating cancer |
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