WO2002020782A1 - A sense andantisnse oligonucleotides of v-erbb gene and uses thereof - Google Patents

A sense andantisnse oligonucleotides of v-erbb gene and uses thereof Download PDF

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WO2002020782A1
WO2002020782A1 PCT/CN2001/000888 CN0100888W WO0220782A1 WO 2002020782 A1 WO2002020782 A1 WO 2002020782A1 CN 0100888 W CN0100888 W CN 0100888W WO 0220782 A1 WO0220782 A1 WO 0220782A1
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gene
oligonucleotide
erbb
seq
sequence
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PCT/CN2001/000888
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Chinese (zh)
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Baozhang Feng
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Baozhang Feng
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    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/705Receptors; Cell surface antigens; Cell surface determinants
    • C07K14/71Receptors; Cell surface antigens; Cell surface determinants for growth factors; for growth regulators
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00Antineoplastic agents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K48/00Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy

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  • V-erbB oligonucleotides Positive and negative genes V-erbB oligonucleotides and applications thereof
  • the present invention relates to a pair of PCR archers specific to the V-erbB gene, a V-erbB sequence defined by the pair of primers, a transcribed mRNA and a translated polypeptide of the V-erbB sequence, comprising the V-erbB sequence and Polypeptide vaccines, plus positive and negative gene oligonucleotides designed for this V-erbB sequence.
  • the present invention also relates to a diagnostic kit containing the primer or positive gene oligonucleotide, a pharmaceutical composition containing the antigenic oligonucleotide, and the above-mentioned substances in the diagnosis and treatment of myelodysplastic syndrome, leukemia and Many other tumors and their early application.
  • Gene therapy is a new disease treatment technology developed in the past ten years. It achieves the purpose of treating diseases by correcting the abnormality of the pathogenic gene or replacing it with a new gene.
  • people have high expectations for tumor gene therapy.
  • the method of introducing a normal gene into a body using a viral vector in the prior art although having some curative effects, faces a series of difficulties.
  • the use of antisense oligonucleotide phosphorothioate as a gene therapy avoids a series of problems caused by the use of viral vectors.
  • Phosphorothioate and some of the toxicity caused by the degradation of oligonucleotides are acceptable and surmountable by the human body and are therefore very safe.
  • antisense oligonucleotides are designed to target the mRNA of cancer cell target genes, and cancer cells are constantly generating m A from the nucleus, it is unlikely to have a solid curative effect.
  • Antigene oligonucleotides developed on this basis are designed for specific mutation positions of oncogenes, so that after entering the cell, they can form a solid triple-stranded DNA structure in the nucleus and inhibit the expression and amplification of the gene This brings new hope for tumor gene therapy.
  • MDS Myelodysplastic syndrome
  • white Preleukemia is a group of malignant bone marrow hematopoietic stem cell diseases. Most patients have excessive bone marrow hyperplasia but have difficulty in differentiation and maturation. As a result, their peripheral blood has reduced formation, and anemia, bleeding, decreased blood cells, dizziness, and fatigue are present. symptom. Most patients develop acute leukemia months or years after diagnosis, and no effective treatment is available.
  • V-erbB and V-erbA are chicken oncogenes of Avian Erythroblastosis virus.
  • the former is homologous to the epidermal growth factor receptor (EGFR) gene and has the function of transforming erythroid progenitor cells; the latter has the effect of blocking the differentiation and maturation of the aforementioned erythroid progenitor cells.
  • EGFR epidermal growth factor receptor
  • Myelodysplastic syndrome has five different subtypes, of which Refractory Anemia 5 RA is its basic type. It can be transformed into refractory anaemia (ie, RAEB) and transformed RAEB (ie, RAEBT) and acute leukemia (Acute Leukemia, AL). RAEBT patients with bone marrow in the primary and early erythrocytes can also be re-diagnosed as red leukemia, which is the same as the above chicken red leukemia. RA patients can also be diagnosed with red blood disease when the bone marrow has a single hypertrophy of the red system. And red blood disease can develop into red leukemia.
  • RAEB refractory anaemia
  • RAEBT transformed RAEB
  • AL acute leukemia
  • RAEBT patients with bone marrow in the primary and early erythrocytes can also be re-diagnosed as red leukemia, which is the same as the above chicken red leukemia.
  • RA patients can also be diagnosed with red
  • FS Fragile Site
  • V-erbB Southern blot hybridization with V-erbA proved that MDS is associated with C-erbB rearrangement / amplification and C-erbA deletion / inactivation.
  • the hybridization results have diagnostic and pathological significance.
  • the inventors applied the V-erbB PCR and positive gene oligonucleotide in situ hybridization method to determine the C-erbB rearrangement position. Surprisingly, both the PCR product and the in situ hybridization result were found. Diagnostic and pathological significance. On this basis, DNA sequencing was performed on the above PCR products. It was processed by Gene Runner software.
  • an object of the present invention is to provide a pair of PCR primers specific to the V-erbB gene and a V-erbB sequence defined by the primer, the mRNA transcribed from the sequence and the translated polypeptide, comprising the V-erbB sequence and Polypeptide vaccine.
  • the V-erbB sequence can be used as a target sequence for designing drugs for treating MDS, leukemia, and many other tumors and their early stages.
  • a second object of the present invention is to provide anti-gene oligonucleotides and positive-gene oligonucleotides directed to the V-erbB sequence defined by the above primers, and a pharmaceutical composition comprising these oligonucleotides and the above-mentioned primers of the present invention or Diagnostic kit.
  • a third object of the present invention is the application of the above-mentioned substances of the present invention in the diagnosis and treatment of myelodysplastic syndromes, leukemias, and various other tumors and their early stages.
  • a pair of PCR primers specific to the V-erbB gene is provided, which can be used for highly sensitive diagnosis related to C_erbB rearrangement / amplification and C-erbA deletion / inactivation
  • MDS myelodysplastic syndrome
  • the nucleotide sequence of the primer pair is as follows: 5, ATG AAA TGT GCC CAT TTT ATA 3 '(SEQ ID NO. 1) and 5, CAA AAC TTT GAC CTT TTT 3' (SEQ ID NO.
  • the present invention also relates to the V-erbB sequence defined by the above primers
  • the sequence can be used as a target sequence for designing drugs for treating MDS, leukemia and other various tumors and their early stages, and can be used for designing any oligonucleotide primers other than the above PCR primer pairs.
  • the sequence is as follows:
  • V-erbB sequence or its polypeptide is used to prevent various cancers associated with C-erbB rearrangement / amplification and C-erbA deletion / inactivation and their early stages, especially myelodysplastic syndrome ( MDS), DNA vaccines or polypeptide vaccines such as leukemia are also part of the present invention.
  • MDS myelodysplastic syndrome
  • two anti-gene oligonucleotides are provided for the V-erbB sequence (SEQ ID N0.3) defined by the primers of the present invention, and the sequences of the anti-gene oligonucleotides are as follows:
  • the antigenic oligonucleotide of the present invention can be used to treat and prevent various cancers associated with C-erbB rearrangement / amplification and C-erbA deletion / inactivation and their early stages, especially abnormal bone marrow hyperplasia, through anti-gene technology. Syndrome (MDS), leukemia, etc.
  • MDS anti-gene technology. Syndrome
  • Antigenic oligo Nucleotides can also be used in combination with antigenic oligonucleotides of genes related to cancer pathogenesis such as thymidine synthase (TS) and thymidine kinase (TK) genes to treat and prevent the above diseases.
  • TS thymidine synthase
  • TK thymidine kinase
  • the present invention also provides a positive gene oligonucleotide contained in the V-erbB sequence (SEQ ID N0.3) of the first aspect of the present invention, and the positive gene oligonucleotide can be used for diagnosis and C-erbB recombination. Exclusion / amplification and C-erbA deletion / inactivation are related to a variety of cancers and their early stages, especially myelodysplastic syndrome (MDS), leukemia, etc.
  • MDS myelodysplastic syndrome
  • the two preferred positive gene oligonucleotide sequences are:
  • CAG GCC CAC CTG AGA ATT 3 '(SEQ ID N0.7).
  • the positive gene oligonucleotides for diagnostic purposes of the present invention also include any oligonucleus of 10-30 bp in length derived from SEQ ID N0.3 Glycylic acid.
  • the present invention also relates to a diagnostic kit containing these positive gene oligonucleotides for diagnosing various cancers associated with C-erbB rearrangement / amplification and C-erbA deletion / inactivation and their early stages, particularly bone marrow Hyperplasia syndrome (MDS), leukemia, etc.
  • MDS bone marrow Hyperplasia syndrome
  • the anti-gene V-erbB oligonucleotide of the present invention is designed and synthesized toward the rearrangement site of C-erbB, and because it is complementary to the base of the positive gene C-erbB rearrangement site, it can specifically bind and inhibit the positive Abnormal expression and amplification of the gene C-erbB, or binding to the gene C-erbB mRNA to block its translation into oncogenic proteins. Therefore, using anti-gene technology known to those skilled in the art, the anti-gene oligonucleotide of the present invention can be used to treat and prevent C-erbB rearrangement / amplification and C-erbA deletion / inactivation-related MDS, leukemia, and many others.
  • the anti-gene oligonucleotide SEQ ID No. 4 has an important therapeutic effect, and SEQ ID N0.5 has an adjuvant therapeutic effect (see the following examples). This It should be understood by those skilled in the art that anti-gene oligonucleotides designed for other sites of the V-erbB sequence of the PCR primer interval described above will have the same auxiliary effect.
  • the antigenic oligonucleotide of the present invention is modified with phosphorothioate, and the modified product has the effect of inhibiting nuclease and bringing it to a target position in the cell.
  • the increase in the proportion of primordial and promyelocytic cells in the bone marrow is not only the conversion of MDS to leukemia, but also the central manifestation of the acute transformation of chronic myelogenous leukemia, as well as the central manifestation of the etiology and recurrence of leukemia. It can be seen from the following examples that the use of the anti-gene V-erbB oligonucleotide of the present invention can quickly and effectively reduce the primordial and promyelocytic cells in the bone marrow of MDS model rats to normal levels (5%). Preventing malignant tumor diseases such as MDS provides a way.
  • the V - er B PCR primer interval sequence and the positive gene oligonucleotide are labeled, for example, they can be used as diagnostic probes and in situ hybridization with bone marrow cell samples to Determine whether an individual has MDS and precancerous lesions or malignancies.
  • the ortho-oligonucleotide can be labeled by any method known in the art, such as biotin, digoxin, and the like.
  • the C-erbB gene abnormality of the patient's bone marrow or precancerous tissue can also be detected by the V-erbB PCR method. Whether or not, to diagnose malignant tumors such as MDS.
  • the use of the antigenic oligonucleotide of the present invention for gene therapy and prevention has many advantages.
  • the biggest advantage is that it does not introduce a series of adverse consequences that are difficult to evaluate due to the introduction of vector (such as retrovirus or adenovirus) DNA or RNA into the cell.
  • vector such as retrovirus or adenovirus
  • the anti-gene oligonucleotide of the present invention is characterized by the in situ repair of oncogene rearrangement positions, rather than the introduction of foreign genes, so it is different from general antisense gene therapy.
  • the latter is designed to synthesize anti-oncogene mRNA Sense oligonucleotide, and because cancer cells are constantly producing rnRNA from the nucleus, the therapeutic effect of limited antisense oligonucleotides is limited and transient.
  • the V-erbB PCR primer interval sequence of the present invention and the positive gene oligonucleotide can be used, for example, as diagnostic probes and in situ hybridization with bone marrow cell samples.
  • the ortho-oligonucleotide may be labeled by any method known in the art, such as biotin, digoxin, and the like.
  • the V-erbB gene-specific PCR primer of the present invention or other primers designed according to the sequence of SEQ ID NO. 3 of the present invention can also be used to detect C-erbB gene abnormalities in patients' bone marrow or precancerous tissues by the V-erbB PCR method. Whether or not, to diagnose malignant tumors such as MDS.
  • Figure 1 shows the effect of rat MDS after treatment with the anti-gene V-erbB oligonucleotide of the present invention in Example 2.
  • Fig. 2 shows that after treatment with the anti-gene V-erbB oligonucleotide of the present invention in Example 2, the rat MDS hemogram returned to normal.
  • Figure 3 shows the increase in rat MDS weight during treatment with the anti-gene V-erbB oligonucleotide of the present invention in Example 2.
  • oligonucleotides were automatically synthesized on a DNA synthesizer (model 394, source PE company)-
  • MDS occurred in 9/14 of rats injected 3 times with DMBA. Symptoms occurred 2 months after the injection, and there was an MDS period of 3-4 months. Wistar rats injected 3 times with DMBA were selected as gene therapy models.
  • the two anti-gene V-erbB oligonucleotides synthesized in Example 1 were modified with phosphorothioate. Dissolve in normal saline at a concentration of 10.0 OD / ml before use. MDS rats are injected once a day by the tail vein for 3 consecutive days. The dose was 0.56 mg / kg of body weight.
  • WR1 primary cytoplasmic RA
  • WR2 primary cytoplasmic RA
  • the experimental mice were injected with V-erbB antigene oligonucleotide through the tail vein once a day for 3 consecutive days as a course of treatment. Then observe.
  • the effect of different administration times and schedules of the anti-gene V-erbB oligonucleotide of the present invention on the bone marrow of rat MDS is shown in Table 1. It can be seen from Table 1 that the primordial and promyelocytic cells of the 16 rats treated were significantly decreased, and the bone marrow of 15 rats returned to normal. And the two oligonucleotides of the present invention have a curative effect when administered alone or in combination. Control mice (Table 2) showed an increase in the percentage of bone marrow primitive and promyelocytic cells, suggesting that the disease was progressing. Subsequently, 8 MDS-RAEB rats were orally treated with the same dose and 1-3 courses of treatment, and the same results as above were obtained.
  • the inventors also used local medication to treat 27 patients with esophageal cancer and 2 patients with early cervical cancer, with an effective rate of 74.1%, which reversed the severe or moderate hyperplasia of the esophagus to normal.
  • V-erbB anti-gene oligonucleotide of the present invention has good curative effect on MDS and curative effect on other tumors.
  • the application of the V-erbB anti-gene oligonucleotide of the present invention in treating early lesions may have similar curative effects.
  • V-erbB positive gene oligonucleotide SEQ ID N0.6 corresponding to the antigenic oligonucleotide SEQ ID NO: 4 was synthesized as described in Example 1, and the oligonucleotide was labeled with digoxin (DIG), Using the labeled oligonucleotide as a probe, the amplification of the C-erbB gene in 33 cases of MDS and 19 other hematological diseases and 3 suspected MDS was detected by in situ hybridization. The results showed that all 33 cases of MDS In situ hybridization was positive, 1 of 19 other hematological diseases was positive, and 3 suspected MDS were positive.
  • DIG digoxin
  • Bone marrow cell DNA was extracted as a template according to a conventional method, and the specific PCR primer pairs 5, ATG AAA TGT GCC CAT TTT ATA (SEQ ID NO. 1) and 5, CAA AAC TTT GAC CTT TTT (SEQ ID NO. 2) of the present invention were used as a template.
  • the primers were used for PCR amplification.
  • the amplification conditions were 94 ⁇ 2 minutes for template denaturation, and then 35 cycles. Each cycle was 94 ° C for 0.5 minutes, annealing conditions were 56 ° C for 1 minute, and extension conditions were 72. ° C for 1.5 minutes. After 5 minutes at 72 ° C after the last cycle.
  • the PCR products were detected by electrophoresis on a 1.8% agarose gel.

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Abstract

The invention relates to a pair of PCR primers specific for V-erbB gene, the sequence of V-erbB gene specified by the pair of primers, the polypeptide transcribed by the sequence, vaccine comprising the V-erbB sequence or polypeptide thereof, and a sense and antisense oligonucleotides of V-erbB gene designed based on the sequence of V-erbB gene. The invention also relates to a kit comprising above primers or a sense oligonucleotides of V-erbB gene, pharmaceutical composition comprising antisense oligonucleotides of V-erbB gene, and uses thereof in the diagnosis and treatment of myelosis abnormality syndrome, leukosis, other multiple tumor and prophasing.

Description

正基因及反基因 V-erbB寡核苷酸及其应用 发明领域  Positive and negative genes V-erbB oligonucleotides and applications thereof
本发明涉及一对特异于 V-erbB基因的 PCR弓 |物, 由该对引物 所限定的 V-erbB序列, 该 V-erbB序列转录的 mRNA和翻译的多肽, 包含所述 V-erbB序列和多肽的疫苗, 以及针对该 V-erbB序列而设 计的正基因和反基因寡核苷酸。 本发明还涉及包含所述引物或正基 因寡核苷酸的诊断试剂盒, 包含所述反基因寡核苷酸的药物组合物, 及上述这些物质在诊断和治疗骨髓增生异常综合征、 白血病和其他 多种肿瘤及其早期中的应用。  The present invention relates to a pair of PCR archers specific to the V-erbB gene, a V-erbB sequence defined by the pair of primers, a transcribed mRNA and a translated polypeptide of the V-erbB sequence, comprising the V-erbB sequence and Polypeptide vaccines, plus positive and negative gene oligonucleotides designed for this V-erbB sequence. The present invention also relates to a diagnostic kit containing the primer or positive gene oligonucleotide, a pharmaceutical composition containing the antigenic oligonucleotide, and the above-mentioned substances in the diagnosis and treatment of myelodysplastic syndrome, leukemia and Many other tumors and their early application.
发明背景  Background of the invention
基因治疗是近十多年来发展起来的疾病治疗新技术。 它是通过 纠正致病基因异常或用新的基因进行替换的办法达到治疗疾病的目 的。 鉴于目前肿瘤治疗手段的局限性和不彻底性, 乃至多数肿瘤患 者治疗后若干年便复发和死亡, 人们对肿瘤的基因治疗抱有很高的 期望。 然而现有技术中用病毒载体将正常基因导入体内的方法, 虽 有某些疗效, 但面临一系列难题。 而用反义寡核苷酸硫代磷酸酯作 基因治疗则避免了因使用病毒载体而带来的一系列问题。 硫代磷酸 和因寡核苷酸降解所带来的某些毒性是人体可接受和能克服的, 因 而十分安全。然而, 由于反义寡核苷酸是针对癌细胞靶基因的 mRNA 而设计的, 而癌细胞能源源不断地从细胞核内产生 m A, 因而不 可能有巩固的疗效。 而在此基础上发展起来的反基因寡核苷酸则针 对癌基因特定的突变位置而设计, 使之进入细胞后能在细胞核内形 成巩固的 DNA三链结构而抑制该基因的表达和扩增, 从而为肿瘤基 因治疗带来新的希望。  Gene therapy is a new disease treatment technology developed in the past ten years. It achieves the purpose of treating diseases by correcting the abnormality of the pathogenic gene or replacing it with a new gene. In view of the limitations and incompleteness of current tumor treatment methods, and even the recurrence and death of most tumor patients within a few years after treatment, people have high expectations for tumor gene therapy. However, the method of introducing a normal gene into a body using a viral vector in the prior art, although having some curative effects, faces a series of difficulties. The use of antisense oligonucleotide phosphorothioate as a gene therapy avoids a series of problems caused by the use of viral vectors. Phosphorothioate and some of the toxicity caused by the degradation of oligonucleotides are acceptable and surmountable by the human body and are therefore very safe. However, because antisense oligonucleotides are designed to target the mRNA of cancer cell target genes, and cancer cells are constantly generating m A from the nucleus, it is unlikely to have a solid curative effect. Antigene oligonucleotides developed on this basis are designed for specific mutation positions of oncogenes, so that after entering the cell, they can form a solid triple-stranded DNA structure in the nucleus and inhibit the expression and amplification of the gene This brings new hope for tumor gene therapy.
骨髓增生异常综合征 (myelodysplastic syndrome,MDS), 又称白 血病前期 (preleukemia), 是一组恶性的骨髓造血干细胞病, 多数病 人骨髓增生过度但分化成熟障碍, 因而其外周血中有形成分减少, 出现贫血、 出血、 血细胞减少及头暈、 乏力等症状。 多数病人诊断 后若干月或若干年发展为急性白血病, 且无有效治疗方法。 Myelodysplastic syndrome (MDS), also known as white Preleukemia is a group of malignant bone marrow hematopoietic stem cell diseases. Most patients have excessive bone marrow hyperplasia but have difficulty in differentiation and maturation. As a result, their peripheral blood has reduced formation, and anemia, bleeding, decreased blood cells, dizziness, and fatigue are present. symptom. Most patients develop acute leukemia months or years after diagnosis, and no effective treatment is available.
己知 V— erbB 和 V— erbA 为鸡原始红细胞增多症 (Avian Erythroblastosis)病毒癌基因。前者同源于表皮生长因子受体(EGFR) 基因, 具有转化红系祖细胞的功能; 后者具有阻断上述红系祖细胞 分化成熟的作用。 二者协同作用导致鸡原始红细胞增多症或称鸡红 白血病。  It is known that V-erbB and V-erbA are chicken oncogenes of Avian Erythroblastosis virus. The former is homologous to the epidermal growth factor receptor (EGFR) gene and has the function of transforming erythroid progenitor cells; the latter has the effect of blocking the differentiation and maturation of the aforementioned erythroid progenitor cells. The synergy between the two causes chicken erythrocytosis or chicken leukemia.
骨髓增生异常综合征 (MDS ) 具有五个不同亚型, 其中难治性 贫血 (Refractory Anemia5RA) 是其基本型。 它可以转化为原始粒细 胞增多型难治性贫血 (即 RAEB) 和转化中的 RAEB (即 RAEBT) 和急性白血病 (Acute Leukemia, AL)。 RAEBT患者骨髓中原始和早 幼红细胞增多时还可以再诊断为红白血病而与上述鸡红白血病相 同。 RA患者骨髓单一红系统过度增生时亦可诊断为红血病。 而红血 病可以发展为红白血病。 说明红血病一红白血病与 MDS— RA 和 RAEB. RAEBT等并无本质区别。 提示 V— erbB和 V— erbA之血细 胞副本 C一 erbB和 C— erbA异常可能在人 MDS、 白血病发病中起 重要作用。 已知 V-Src和 V— erbA二者协同作用导致鸡肉瘤。 Myelodysplastic syndrome (MDS) has five different subtypes, of which Refractory Anemia 5 RA is its basic type. It can be transformed into refractory anaemia (ie, RAEB) and transformed RAEB (ie, RAEBT) and acute leukemia (Acute Leukemia, AL). RAEBT patients with bone marrow in the primary and early erythrocytes can also be re-diagnosed as red leukemia, which is the same as the above chicken red leukemia. RA patients can also be diagnosed with red blood disease when the bone marrow has a single hypertrophy of the red system. And red blood disease can develop into red leukemia. It shows that there is no essential difference between erythrocyte disease and erythroleukemia and MDS-RA and RAEB. RAEBT. It is suggested that the abnormality of C-erbB and C-erbA in the blood cell copies of V-erbB and V-erbA may play an important role in the pathogenesis of human MDS and leukemia. It is known that both V-Src and V-erbA act synergistically to cause chicken sarcoma.
以往的研究业已证明, 人外周血淋巴细胞染色体脆性部位 (Fragile Site,FS) 高表达提示肿瘤易感性。 肿瘤患者 FS往往与肿瘤 细胞染色体断点以及癌基因位置相同或相近。 本发明人发现一例白 血病前期患者外周淋巴细胞表达 Fra /XP11)和 Fra(3)(P14)等。 Fra (7) (Pn )与 C—erbB相毗邻, 患者骨髓红系病态造血(Myelodysplasia) 明显, 因而高度怀疑 C—erbB 受累。 于是, 本发明人选用 V— erbB 和 V— erbA作探针进行 Southern印迹杂交, 证明 MDS与 C— erbB 重排 /扩增和 C一 erbA缺失 /失活相关, 杂交结果有诊断和发病学意 义。 在此基础上, 本发明人应用 V— erbB PCR和正基因寡核苷酸原 位杂交方法, 迸而确定 C-erbB重排位置, 令人惊奇地发现, 其 PCR 产物和原位杂交结果均有诊断和发病学意义。在此基础上对上述 PCR 产物作 DNA测序。 并应用 Gene Runner软件处理, 结果显示, 白 血病和白前患者骨髓细胞上述 PCR产物与上述 V-erbB上下游引物 区间具有高度同源性, 而与正常人 EGFR上述区间无同源性, 提示 在癌症发生的源头上发生了 C -erbB 基因上述区间的序列变异, 致 使原有的序列缺失, 而代之以新的序列。 Previous studies have demonstrated that high expression of the Fragile Site (FS) of human peripheral blood lymphocytes indicates tumor susceptibility. Cancer patients with FS are often the same or similar to tumor cell chromosome breakpoints and oncogene locations. The present inventors have found that peripheral lymphocytes of a patient with pre-leukemia express Fra / XP 11 ) and Fra (3) (P 14 ). Fra (7) (P n ) is adjacent to C-erbB. The patient's bone marrow erythropathic hematopoiesis (Myelodysplasia) is obvious, so C-erbB is highly suspected. Therefore, the inventor chose V-erbB Southern blot hybridization with V-erbA as a probe proved that MDS is associated with C-erbB rearrangement / amplification and C-erbA deletion / inactivation. The hybridization results have diagnostic and pathological significance. On this basis, the inventors applied the V-erbB PCR and positive gene oligonucleotide in situ hybridization method to determine the C-erbB rearrangement position. Surprisingly, both the PCR product and the in situ hybridization result were found. Diagnostic and pathological significance. On this basis, DNA sequencing was performed on the above PCR products. It was processed by Gene Runner software. The results showed that the above PCR products of bone marrow cells of leukemia and pre-white patients had high homology with the above V-erbB upstream and downstream primer intervals, but no homology with the above interval of normal human EGFR, suggesting that in cancer The source of the occurrence was a sequence variation in the above-mentioned interval of the C-erbB gene, causing the original sequence to be deleted and replaced with a new sequence.
因此, 本发明的一个目的在于提供一对特异于 V— erbB基因的 PCR引物以及由所述引物限定的 V-erbB序列, 该序列转录的 mRNA 和翻译的多肽,包含所述 V-erbB序列和多肽的疫苗。其中所述 V-erbB 序列可用作设计治疗 MDS、 白血病和其他多种肿瘤及其早期的药物 的靶序列。  Therefore, an object of the present invention is to provide a pair of PCR primers specific to the V-erbB gene and a V-erbB sequence defined by the primer, the mRNA transcribed from the sequence and the translated polypeptide, comprising the V-erbB sequence and Polypeptide vaccine. The V-erbB sequence can be used as a target sequence for designing drugs for treating MDS, leukemia, and many other tumors and their early stages.
本发明的第二个目的在于提供针对上述引物限定的 V-erbB序列 的反基因寡核苷酸和正基因寡核苷酸, 以及包含这些寡核苷酸和上 述本发明的引物的药物组合物或诊断试剂盒。  A second object of the present invention is to provide anti-gene oligonucleotides and positive-gene oligonucleotides directed to the V-erbB sequence defined by the above primers, and a pharmaceutical composition comprising these oligonucleotides and the above-mentioned primers of the present invention or Diagnostic kit.
本发明的第三个目的在于上述本发明的这些物质在诊断和治疗 骨髓增生异常综合征、 白血病和其他多种肿瘤及其早期中的应用。  A third object of the present invention is the application of the above-mentioned substances of the present invention in the diagnosis and treatment of myelodysplastic syndromes, leukemias, and various other tumors and their early stages.
发明概述 - 根据本发明的一个方面, 提供了一对特异于 V-erbB基因的 PCR 引物, 所述引物可用于高灵敏性地诊断与 C_erbB重排 /扩增和 C一 erbA缺失 /失活相关的多种癌症及其早期, 特别是骨髓增生异常综合 征 (MDS), 白血病等。 所述引物对的核苷酸序列如下: 5, ATG AAA TGT GCC CAT TTT ATA 3 ' (SEQ ID NO.l ) 和 5, CAA AAC TTT GAC CTT TTT 3 ' (SEQ ID NO.2)0 本发明还涉及由上述引物限定的 V-erbB序列, 所述序列可用作 设计治疗 MDS、 白血病和其他多种肿瘤及其早期的药物的靶序列并 可用于设计除上述 PCR引物对之外的任何寡核苷酸引物。 所述序列 如下: Summary of the Invention-According to one aspect of the present invention, a pair of PCR primers specific to the V-erbB gene is provided, which can be used for highly sensitive diagnosis related to C_erbB rearrangement / amplification and C-erbA deletion / inactivation A variety of cancers and their early stages, especially myelodysplastic syndrome (MDS), leukemia, etc. The nucleotide sequence of the primer pair is as follows: 5, ATG AAA TGT GCC CAT TTT ATA 3 '(SEQ ID NO. 1) and 5, CAA AAC TTT GAC CTT TTT 3' (SEQ ID NO. 2) 0 The present invention also relates to the V-erbB sequence defined by the above primers The sequence can be used as a target sequence for designing drugs for treating MDS, leukemia and other various tumors and their early stages, and can be used for designing any oligonucleotide primers other than the above PCR primer pairs. The sequence is as follows:
5, ATGAAATGTGCCCATTTTATAGATGGTCCCCACTGTGTGAAG 5, ATGAAATGTGCCCATTTTATAGATGGTCCCCACTGTGTGAAG
GCCTGCCCCGCTGGGGTCCTGGGTGAGAATGATACCCTGGTCCGCCTGCCCCGCTGGGGTCCTGGGTGAGAATGATACCCTGGTCC
GGAAGTATGCAGATGCCAATGCTGTTTGCCAGCTCTGCCATCCAGGAAGTATGCAGATGCCAATGCTGTTTGCCAGCTCTGCCATCCA
AACTGTACACGAGGGTGCAAAGGACCAGGTCTTGAAGGATGTCAACTGTACACGAGGGTGCAAAGGACCAGGTCTTGAAGGATGTC
CAAATGGCTCCAAAACTCCATCTATCGTGGCTGGTGTTGTCGGACAAATGGCTCCAAAACTCCATCTATCGTGGCTGGTGTTGTCGGA
GGACTCCTGTGCCTGGTTGTGGTTGGTCTAGGCATCGGTCTTTAGGACTCCTGTGCCTGGTTGTGGTTGGTCTAGGCATCGGTCTTTA
CCTGCGGCGACGTCATATCGTGCGGAAGCGCACCCTGCGCAGGCCTGCGGCGACGTCATATCGTGCGGAAGCGCACCCTGCGCAGG
CTGCTGCAAGAGAGGGAGCTTGTCGAACCACTGACACCCAGTCTGCTGCAAGAGAGGGAGCTTGTCGAACCACTGACACCCAGT
GGGGAGGCACCAAACCAGGCCCACCTGAGAATTTTAAAGGAAGGGGAGGCACCAAACCAGGCCCACCTGAGAATTTTAAAGGAA
ACAGAATTTAAAAAGGTCAAAGTTTTG 3 ' ( SEQ ID N0.3 ) 应理解的是, 由 SEQ ID N0.3序列转录的 mRNA和翻译的多肽 也包括在本发明中。 另外, 包含所述 V-erbB序列或其多肽的用于预 防与 C— erbB 重排 /扩增和 C一 erbA缺失 /失活相关的多种癌症及其 早期, 特别是骨髓增生异常综合征 (MDS), 白血病等的 DNA疫苗 或多肽疫苗也是本发明的一部分。 ACAGAATTTAAAAAGGTCAAAGTTTTG 3 '(SEQ ID N0.3) It is understood that the mRNA and translated polypeptide transcribed from the sequence of SEQ ID N0.3 are also included in the present invention. In addition, the V-erbB sequence or its polypeptide is used to prevent various cancers associated with C-erbB rearrangement / amplification and C-erbA deletion / inactivation and their early stages, especially myelodysplastic syndrome ( MDS), DNA vaccines or polypeptide vaccines such as leukemia are also part of the present invention.
根据本发明的第二方面, 提供了针对本发明上述引物限定的 V- erbB 序列 (SEQ ID N0.3 ) 的两个反基因寡核苷酸, 所述反基因寡 核苷酸的序列如下:  According to a second aspect of the present invention, two anti-gene oligonucleotides are provided for the V-erbB sequence (SEQ ID N0.3) defined by the primers of the present invention, and the sequences of the anti-gene oligonucleotides are as follows:
5, ATG GCA GAG CTG GCA AAC 3 ' (SEQ ID NO.4) 和 5, AAT TCT CAG GTG GGC CTG 3 ' ( SEQ ID NO.5 )。 本发明的反基因寡核苷酸能够用于经反基因技术治疗和预防与 C-erbB重排 /扩增和 C一 erbA缺失 /失活相关的多种癌症及其早期, 特别是骨髓增生异常综合征 (MDS ), 白血病等。 本发明的反基因寡 核苷酸还可以和与癌症发病相关基因如胸苷酸合成酶 (TS) 和胸苷 激酶 (TK) 基因的反基因寡核苷酸形成组合物而治疗和预防上述疾 病。 5, ATG GCA GAG CTG GCA AAC 3 '(SEQ ID NO. 4) and 5, AAT TCT CAG GTG GGC CTG 3' (SEQ ID NO. 5). The antigenic oligonucleotide of the present invention can be used to treat and prevent various cancers associated with C-erbB rearrangement / amplification and C-erbA deletion / inactivation and their early stages, especially abnormal bone marrow hyperplasia, through anti-gene technology. Syndrome (MDS), leukemia, etc. Antigenic oligo Nucleotides can also be used in combination with antigenic oligonucleotides of genes related to cancer pathogenesis such as thymidine synthase (TS) and thymidine kinase (TK) genes to treat and prevent the above diseases.
本发明还提供了上述本发明第一方面的 V-erbB 序列 (SEQ ID N0.3 ) 中所包含的正基因寡核苷酸, 所述正基因寡核苷酸可用于诊 断与 C一 erbB重排 /扩增和 C— erbA缺失 /失活相关的多种癌症及其 早期, 特别是骨髓增生异常综合征 (MDS), 白血病等。 优选的两个 正基因寡核苷酸序列为:  The present invention also provides a positive gene oligonucleotide contained in the V-erbB sequence (SEQ ID N0.3) of the first aspect of the present invention, and the positive gene oligonucleotide can be used for diagnosis and C-erbB recombination. Exclusion / amplification and C-erbA deletion / inactivation are related to a variety of cancers and their early stages, especially myelodysplastic syndrome (MDS), leukemia, etc. The two preferred positive gene oligonucleotide sequences are:
5, GTT TGC CAG CTC TGC CAT 3 ' (SEQ ID N0.6),和  5, GTT TGC CAG CTC TGC CAT 3 '(SEQ ID N0.6), and
5, CAG GCC CAC CTG AGA ATT 3 ' (SEQ ID N0.7)。  5. CAG GCC CAC CTG AGA ATT 3 '(SEQ ID N0.7).
应理解的是除以上两个正基因寡核苷酸之外, 用于本发明诊断 目的的正基因寡核苷酸还包括衍生自 SEQ ID N0.3的长度为 10— 30 bp的任何寡核苷酸。  It should be understood that, in addition to the above two positive gene oligonucleotides, the positive gene oligonucleotides for diagnostic purposes of the present invention also include any oligonucleus of 10-30 bp in length derived from SEQ ID N0.3 Glycylic acid.
本发明还涉及包含这些正基因寡核苷酸的诊断试剂盒, 以用于 诊断与 C一 erbB重排 /扩增和 C一 erbA缺失 /失活相关的多种癌症及 其早期, 特别是骨髓增生异常综合征 .(MDS), 白血病等。  The present invention also relates to a diagnostic kit containing these positive gene oligonucleotides for diagnosing various cancers associated with C-erbB rearrangement / amplification and C-erbA deletion / inactivation and their early stages, particularly bone marrow Hyperplasia syndrome (MDS), leukemia, etc.
发明详述  Detailed description of the invention
本发明的反基因 V— erbB寡核苷酸是朝着 C-erbB的重排部位而 设计合成的, 因其与正基因 C一 erbB 重排部位碱基互补而能靶向地 结合并抑制正基因 C一 erbB 的异常表达和扩增, 或者同正基因 C一 erbB mRNA结合而阻断其翻译为致癌性蛋白。 因此, 运用本领域人 员公知的反基因技术, 本发明的反基因寡核苷酸可用于治疗和预防 C-erbB重排 /扩增和 C—erbA缺失 /失活相关的 MDS、 白血病及其 他多种肿瘤, 其中所述的反基因寡核苷酸 SEQ ID No.4具有重要的 治疗作用, 而 SEQ ID N0.5则有辅助治疗作用 (见下述实施例)。 本 领域人员应理解的是, 针对上述 PCR引物区间 V-erbB序列的其他 位点设计的反基因寡核苷酸将有相同的辅助作用。 The anti-gene V-erbB oligonucleotide of the present invention is designed and synthesized toward the rearrangement site of C-erbB, and because it is complementary to the base of the positive gene C-erbB rearrangement site, it can specifically bind and inhibit the positive Abnormal expression and amplification of the gene C-erbB, or binding to the gene C-erbB mRNA to block its translation into oncogenic proteins. Therefore, using anti-gene technology known to those skilled in the art, the anti-gene oligonucleotide of the present invention can be used to treat and prevent C-erbB rearrangement / amplification and C-erbA deletion / inactivation-related MDS, leukemia, and many others. In a tumor, the anti-gene oligonucleotide SEQ ID No. 4 has an important therapeutic effect, and SEQ ID N0.5 has an adjuvant therapeutic effect (see the following examples). This It should be understood by those skilled in the art that anti-gene oligonucleotides designed for other sites of the V-erbB sequence of the PCR primer interval described above will have the same auxiliary effect.
在本发明的一个优选实施方案中, 本发明的反基因寡核苷酸经 硫代磷酸修饰, 这种修饰后的产物具有抑制核酸酶的作用并使其达 到细胞内的靶位置。  In a preferred embodiment of the present invention, the antigenic oligonucleotide of the present invention is modified with phosphorothioate, and the modified product has the effect of inhibiting nuclease and bringing it to a target position in the cell.
已知骨髓中原始和早幼粒细胞比例的增加, 不仅是 MDS 转白 血病, 也是慢性粒细胞白血病急性转变的集中表现, 同时也是白血 病原发和复发的集中表现。 从以下实施例可知运用本发明的反基因 V-erbB寡核苷酸能快速而有效地使 MDS模型大鼠骨髓中原始和早 幼粒细胞降低到正常水平 ( 5% ), 从而为基因治疗和预防 MDS等 恶性肿瘤疾病提供了一种途径。  It is known that the increase in the proportion of primordial and promyelocytic cells in the bone marrow is not only the conversion of MDS to leukemia, but also the central manifestation of the acute transformation of chronic myelogenous leukemia, as well as the central manifestation of the etiology and recurrence of leukemia. It can be seen from the following examples that the use of the anti-gene V-erbB oligonucleotide of the present invention can quickly and effectively reduce the primordial and promyelocytic cells in the bone marrow of MDS model rats to normal levels (5%). Preventing malignant tumor diseases such as MDS provides a way.
根据本发明的另一方面, 即 V-er B PCR引物区间序列及所述的 正基因寡核苷酸, 经标记后, 例如可以用作诊断探针, 与骨髓细胞 样品进行原位杂交, 以判断个体是否患有 MDS和癌前病变或恶性肿 瘤。 所述的正基因寡核苷酸可以以本领域已知的任何方法进行标记, 如生物素、 地高辛等。 应用本发明的特异于 V-erbB基因的 PCR引 物或根据本发明 SEQ ID N0.3的序列设计的其它引物,也可经 V-erbB PCR方法检测患者骨髓或癌前组织的 C一 erbB基因异常与否, 从而 诊断 MDS等恶性肿瘤。 According to another aspect of the present invention, that is, the V - er B PCR primer interval sequence and the positive gene oligonucleotide are labeled, for example, they can be used as diagnostic probes and in situ hybridization with bone marrow cell samples to Determine whether an individual has MDS and precancerous lesions or malignancies. The ortho-oligonucleotide can be labeled by any method known in the art, such as biotin, digoxin, and the like. Using the PCR primers specific to the V-erbB gene of the present invention or other primers designed according to the sequence of SEQ ID N0.3 of the present invention, the C-erbB gene abnormality of the patient's bone marrow or precancerous tissue can also be detected by the V-erbB PCR method. Whether or not, to diagnose malignant tumors such as MDS.
与病毒介导的基因治疗相比, 用本发明的反基因寡核苷酸作基 因治疗和预防有许多优点。 除了作用快速, 操作简便外, 没有因载 体 (如逆病毒或腺病毒) DNA或 RNA 的导入细胞而带来一系列难 以评估的不良后果是最大的优点。 本发明的反基因寡核苷酸的作用 特点是癌基因重排位置的原位修复, 而非导入外源基因, 因而它不 同于一般的反义基因治疗。 后者是针对癌基因 mRNA而设计合成反 义寡核苷酸, 而由于癌细胞能源源不断地从细胞核内产生 rnRNA, 所以有限的反义寡核苷酸的治疗作用是有限和短暂的。 Compared with virus-mediated gene therapy, the use of the antigenic oligonucleotide of the present invention for gene therapy and prevention has many advantages. In addition to its fast action and easy operation, the biggest advantage is that it does not introduce a series of adverse consequences that are difficult to evaluate due to the introduction of vector (such as retrovirus or adenovirus) DNA or RNA into the cell. The anti-gene oligonucleotide of the present invention is characterized by the in situ repair of oncogene rearrangement positions, rather than the introduction of foreign genes, so it is different from general antisense gene therapy. The latter is designed to synthesize anti-oncogene mRNA Sense oligonucleotide, and because cancer cells are constantly producing rnRNA from the nucleus, the therapeutic effect of limited antisense oligonucleotides is limited and transient.
根据本发明的另一方面, 本发明的 V-erbB PCR引物区间序列及 所述的正基因寡核苷酸, 经标记后, 例如可以用作诊断探针, 与骨 髓细胞样品进行原位杂交, 以判断个体是否患有 MDS或白血病前期 和癌前病变或恶性肿瘤。 所述的正基因寡核苷酸可以以本领域已知 的任何方法进行标记, 如生物素、 地高辛等。 应用本发明的特异于 V-erbB基因的 PCR引物或根据本发明 SEQ ID NO.3的序列设计的 其它引物, 也可经 V-erbB PCR方法检测患者骨髓或癌前组织的 C一 erbB基因异常与否, 从而诊断 MDS等恶性肿瘤。  According to another aspect of the present invention, after the V-erbB PCR primer interval sequence of the present invention and the positive gene oligonucleotide are labeled, they can be used, for example, as diagnostic probes and in situ hybridization with bone marrow cell samples. To determine whether an individual has MDS or pre-leukemia and precancerous lesions or malignancies. The ortho-oligonucleotide may be labeled by any method known in the art, such as biotin, digoxin, and the like. The V-erbB gene-specific PCR primer of the present invention or other primers designed according to the sequence of SEQ ID NO. 3 of the present invention can also be used to detect C-erbB gene abnormalities in patients' bone marrow or precancerous tissues by the V-erbB PCR method. Whether or not, to diagnose malignant tumors such as MDS.
本发明的上述及其它特征通过以下参照附图和实施例的详细描 述而更加清楚。  The above and other features of the present invention will be made clearer by the following detailed description with reference to the accompanying drawings and embodiments.
图 1 显示实施例 2中用本发明的反基因 V— erbB寡核苷酸治疗 后大鼠 MDS的效果。  Figure 1 shows the effect of rat MDS after treatment with the anti-gene V-erbB oligonucleotide of the present invention in Example 2.
图 2 显示实施例 2中用本发明的反基因 V— erbB寡核苷酸治疗 后, 大鼠 MDS血象恢复正常。  Fig. 2 shows that after treatment with the anti-gene V-erbB oligonucleotide of the present invention in Example 2, the rat MDS hemogram returned to normal.
图 3 显示实施例 2中用本发明的反基因 V— erbB寡核苷酸治疗 过程中大鼠 MDS体重增加。  Figure 3 shows the increase in rat MDS weight during treatment with the anti-gene V-erbB oligonucleotide of the present invention in Example 2.
实施例 1 反基因 V— erbB寡核苷酸的合成  Example 1 Synthesis of anti-gene V-erbB oligonucleotide
在 DNA合成仪 (型号 394, 来源 PE公司) 上自动合成如下的 寡核苷酸- The following oligonucleotides were automatically synthesized on a DNA synthesizer (model 394, source PE company)-
5 ' ATG GCA GAG CTG GCA AAC (SEQ ID NO: 4) 5 'ATG GCA GAG CTG GCA AAC (SEQ ID NO: 4)
5 ' AAT TCT CAG GTG GGC CTG (SEQ ID NO: 5 ) 实施例 2 反基因 V— erbB寡核苷酸治疗 MDS的效果  5 'AAT TCT CAG GTG GGC CTG (SEQ ID NO: 5) Example 2 Effect of anti-gene V-erbB oligonucleotide on MDS
选择幼年天津大鼠 (TR, 来自天津医科大学动物室) 和 Wistar 大鼠 (WR, 来自军事医学科学院营养所动物室) 各 10 只, 分为 4 组,每组 5只。按以往的方法(冯宝章等,中国实验血液学杂志, 1996, 4(3):309), 经尾静脉注射二甲基苯蒽 (DMBA)。 TR二组中一组为 空白对照, 另一组为实验组, 每只动物每周注射 1 次, 连续注射 4 次。 WR二组中第一组和第二组分别注射 1次和 3 次。 而后观察各 组动物发病情况。 Select juvenile Tianjin rats (TR, from the Animal Lab of Tianjin Medical University) and Wistar Rats (WR, from the Animal Room of the Institute of Nutrition, Academy of Military Medical Sciences) were each divided into 4 groups of 5 rats each. According to the previous method (Feng Baozhang et al., Chinese Journal of Experimental Hematology, 1996, 4 (3): 309), dimethylbenzanthrene (DMBA) was injected through the tail vein. One of the two TR groups was a blank control and the other was an experimental group. Each animal was injected once a week for four consecutive injections. In the two groups of WR, the first and second groups were injected once and three times, respectively. Then observe the incidence of animals in each group.
根据以往的工作, 3次注射 DMBA的大鼠有 9/14发生 MDS。 注射后 2个月发病, 并有 3— 4个月 MDS期。 选择 3次注射 DMBA 的 Wistar大鼠作基因治疗模型。  According to previous work, MDS occurred in 9/14 of rats injected 3 times with DMBA. Symptoms occurred 2 months after the injection, and there was an MDS period of 3-4 months. Wistar rats injected 3 times with DMBA were selected as gene therapy models.
将实施例 1合成的 2条反基因 V— erbB寡核苷酸, 经硫代磷酸 修饰。 使用之前用生理盐水溶解, 浓度为 10.0 OD/ml, MDS大鼠每 天尾静脉注射 1次, 连续注射 3天。 剂量为 0.56mg/kg体重。  The two anti-gene V-erbB oligonucleotides synthesized in Example 1 were modified with phosphorothioate. Dissolve in normal saline at a concentration of 10.0 OD / ml before use. MDS rats are injected once a day by the tail vein for 3 consecutive days. The dose was 0.56 mg / kg of body weight.
在对 3次给药组 (5只) 进行观察过程中, 发现 2只 WR几乎 同时发病并诊断为 MDS— RA (即难治性贫血)。 当它们从 RA发展 到 RAEB (原始细胞增多型 RA) 阶段时, 将其中 1只 (WR1 ) 选作 基因治疗实验鼠, 另一只 (WR2) 作为对照鼠。 实验鼠经尾静脉注 射 V— erbB反基因寡核苷酸, 每天 1次, 连续 3天为一个疗程。 而 后进行观察。 注射反基因寡核苷酸后 1 个月左右, 发现对照鼠精神 萎摩不振, 且见尾根部生长 3— 4公分大小的肿瘤 (病理检查确认为 肉瘤)。 骨髓检查确诊为红白血病, 并死于尿路受肉瘤压迫而致的尿 潴留。 而实验鼠不仅精神好, 而且骨髓检查发现原始和早幼粒细胞 从 V— erbB反基因寡核苷酸治疗前的 13.0%下降为 5.0%。 血象和骨 髓象明显改善。 反基因治疗后 3 个月再作骨髓象和血象检查时发现 二者均正常。 详见图 1、 2。 初步结果说明, 本发明的反基因寡核苷 酸对大鼠 MDS有良好的疗效, 而治疗前后体重检查结果说明此反基 因寡核苷酸毒性不明显 (图 3 )。 将此只雄性实验鼠与 1 只未孕的雌 性 Wistar大鼠同窝喂养 48天后, 雌鼠生育一胎 14只健康活泼的幼 仔, 进一步说明本发明的反基因寡核苷酸虽经硫代但毒性不显且安 全性能好。 During the observation of the three-dose group (five), two WRs were found to develop almost simultaneously and diagnosed as MDS-RA (ie, refractory anemia). When they progressed from RA to RAEB (primary cytoplasmic RA) stage, one of them (WR1) was selected as a gene therapy experimental rat and the other (WR2) was used as a control rat. The experimental mice were injected with V-erbB antigene oligonucleotide through the tail vein once a day for 3 consecutive days as a course of treatment. Then observe. About one month after the injection of the anti-gene oligonucleotides, it was found that the control rats were atrophic and that a tumor of 3-4 cm in size was grown at the root of the tail (pathological examination confirmed a sarcoma). Bone marrow examination confirmed erythroleukemia and died of urinary retention due to urinary tract compression by sarcoma. The experimental rats were not only in good spirits, but also bone marrow examination showed that the primary and promyelocytic cells decreased from 13.0% to 5.0% before treatment with the V-erbB antigene oligonucleotide. Blood and bone marrow signs improved significantly. Bone marrow and blood examinations were performed 3 months after the antigene therapy, and both were normal. See Figures 1 and 2 for details. Preliminary results indicate that the antigenic oligonucleotide of the present invention has a good curative effect on rat MDS, and the results of body weight examination before and after treatment indicate that the antigenic Because the oligonucleotide toxicity is not obvious (Figure 3). After feeding this male experimental rat with a non-pregnant female Wistar rat for 48 days, the female rat gave birth to 14 healthy and lively pups, further explaining that the antigenic oligonucleotide of the present invention is But the toxicity is not obvious and the safety performance is good.
本发明的反基因 V— erbB寡核苷酸不同给药次数和方案对大鼠 MDS骨髓的影响见表 1。 从表 1可见, 进行治疗的 16只大鼠原始和 早幼粒细胞均有明显下降,其中 15 只大鼠的骨髓象恢复正常。 并且 本发明的两种寡核苷酸单独给药或联合给药均有疗效。而对照鼠(表 2) 骨髓原始和早幼粒细胞百分比上升, 提示疾病在进展。 随后应用 相同的剂量, 1—3个疗程对 8只 MDS— RAEB大鼠进行口服治疗, 取得与上述相同的结果。  The effect of different administration times and schedules of the anti-gene V-erbB oligonucleotide of the present invention on the bone marrow of rat MDS is shown in Table 1. It can be seen from Table 1 that the primordial and promyelocytic cells of the 16 rats treated were significantly decreased, and the bone marrow of 15 rats returned to normal. And the two oligonucleotides of the present invention have a curative effect when administered alone or in combination. Control mice (Table 2) showed an increase in the percentage of bone marrow primitive and promyelocytic cells, suggesting that the disease was progressing. Subsequently, 8 MDS-RAEB rats were orally treated with the same dose and 1-3 courses of treatment, and the same results as above were obtained.
另外, 本发明人还采用局部用药治疗了 27例食管癌和 2例宫颈 癌早期病人, 有效率为 74.1%, 使食管重度或中度增生逆转为正常。 In addition, the inventors also used local medication to treat 27 patients with esophageal cancer and 2 patients with early cervical cancer, with an effective rate of 74.1%, which reversed the severe or moderate hyperplasia of the esophagus to normal.
15只 MDS大鼠注射反基因寡核苷酸后骨髓变化的观察 Observation of bone marrow changes in 15 MDS rats after injection of antigene oligonucleotides
MDS MDS 注射 B *和 B2** 注射后 骨髓原始 +早幼粒 大鼠 亚型 次数 观察时间 (月) 细胞%下降情况 ώ MDS MDS injection of B * and B 2 ** after injection of bone marrow primitive + promyelocytic rat subtypes observation time (months) cell% decline
B-0 RAEB 3 B,B2 3.0 10.5 (13.5-3.0) * * RAEB 3 2.5 15.0 (15.0-无恶性细胞)B-0 RAEB 3 B, B 2 3.0 10.5 (13.5-3.0) * * RAEB 3 2.5 15.0 (15.0-no malignant cells)
Β-4 RAEB 2 2.5 5.0 (11.0-6.0)Β-4 RAEB 2 2.5 5.0 (11.0-6.0)
Α-4 RAEB 2 3.0 5.0 (17.0-12.0)Α-4 RAEB 2 3.0 5.0 (17.0-12.0)
C-2 RAEB 3.5 4.0 (9.0-5.0)C-2 RAEB 3.5 4.0 (9.0-5.0)
C-8 RAEB 3 B|B2 3.5 4.0 (8.0-4.5)C-8 RAEB 3 B | B 2 3.5 4.0 (8.0-4.5)
D-3 RAEB 1 B,B2 3.0 7.0(13.0-6.0)D-3 RAEB 1 B, B 2 3.0 7.0 (13.0-6.0)
D-5 RAEB 1 B,B2 3.0 7.0 (9.5-2.5)D-5 RAEB 1 B, B 2 3.0 7.0 (9.5-2.5)
Β-2 RAEB B2 3.0 2.5 (7.0-4.5)Β-2 RAEB B 2 3.0 2.5 (7.0-4.5)
Ε-5 RAEB 1 B2 3.0 3.5 (6.5-3.0)Ε-5 RAEB 1 B 2 3.0 3.5 (6.5-3.0)
D-4 RAEB 1 2.5 4.0 (6.5-2.5)D-4 RAEB 1 2.5 4.0 (6.5-2.5)
D-1 RAEB 1 2.5 7.5 (9.5-2.0)D-1 RAEB 1 2.5 7.5 (9.5-2.0)
D-2 RAEB B, 2.5 8.5 (11.5-3.0)D-2 RAEB B, 2.5 8.5 (11.5-3.0)
Β-5 RA 1 2.5 4.0 (5.0-1.0)****Β-5 RA 1 2.5 4.0 (5.0-1.0) ****
B-1 RAEB 1 2.5 6.0 (7.5-1.5)B-1 RAEB 1 2.5 6.0 (7.5-1.5)
* B1=SEQ ID N0.4 * B1 = SEQ ID N0.4
**B2=SEQ ID N0.5  ** B2 = SEQ ID N0.5
***观察期间此鼠死于炎症  *** This mouse died of inflammation during observation
****此鼠尾部发生肉瘤并转移到骨髓  **** This mouse has a sarcoma in the tail and metastasized to the bone marrow
9只大鼠 MDS诊断后未作治疗其骨髓变化观察结果 Observation of bone marrow changes in 9 rats without MDS diagnosis
MDS 诊断 诊断时原始 随访时间 (月) 转归  MDS diagnosis Original follow-up time (months) at diagnosis
女鬧.  Female trouble.
T-2 RAEB 17.0 2 AEL, RAEBT (死亡) T-2 RAEB 17.0 2 AEL, RAEBT (death)
T-3 RAEB 9.0 2 3个月后发生肉瘤死亡T-3 RAEB 9.0 2 Sarcoma death after 3 months
T-7 RAEB 7.5 2 1个月后死亡 T-7 RAEB 7.5 2 died after 1 month
0-0 RAEB 10.0 3 RAEBT, AEL  0-0 RAEB 10.0 3 RAEBT, AEL
(原始 +早幼粒细胞 21%) (Primitive + Promyelocytic 21%)
0-1 RA 5.0 2 RAEB 0-1 RA 5.0 2 RAEB
(原始 +早幼粒细胞 16%) (Primitive + promyelocytic 16%)
0-2 RA 5.0 2 RAEB 0-2 RA 5.0 2 RAEB
(原始 +早幼粒细胞〗3%) (Primitive + promyelocytic cells 3%)
0-3 RA 8.0 2 RAEB 0-3 RA 8.0 2 RAEB
(原始 +早幼粒细胞 10%) (Primitive + promyelocytic 10%)
0-4 RAEB 9.0 2 死亡, 内脏出血 0-4 RAEB 9.0 2 death, internal bleeding
B-7 RAEB 11.0 2.5 RAEB  B-7 RAEB 11.0 2.5 RAEB
(原始 +早幼粒细胞 16%) 结果: 9只 MDS大鼠 2-3个月内或转为 RAEB或 RAEBT或死亡, 骨髓原始 +早幼粒 细胞百分比增加, 未见逆转为正常。 如上所述, 我们建立的大鼠 MDS 模型同时也是肉瘤等其他肿 瘤模型。 本发明的 V— erbB 反基因寡核苷酸对 MDS 有良好疗效, 对其他肿瘤也有疗效。 鉴于脑胶质瘤有 C一 erbB基因扩增, 应用本 发明的 V— erbB 反基因寡核苷酸治疗其早期病变可能也有相似的疗 效。 除了食管癌和宫颈癌以外其他常见恶性肿瘤如乳腺癌、 鼻咽癌、 胃癌、 肝癌、 肠癌和肺癌等早期病变看来也有疗效, 因为它们均有 与 MDS相同的 C-erbB扩增。 (Primitive + Promyelocytic cells 16%) Results: Within 2 to 3 months, 9 MDS rats were converted to RAEB or RAEBT or died, and the percentage of bone marrow primitive + promyelocytic cells increased. No reversion was normal. As mentioned above, our rat MDS model is also a tumor model such as sarcoma. The V-erbB anti-gene oligonucleotide of the present invention has good curative effect on MDS and curative effect on other tumors. In view of the C-erbB gene amplification of gliomas, the application of the V-erbB anti-gene oligonucleotide of the present invention in treating early lesions may have similar curative effects. In addition to esophageal and cervical cancers, other common malignancies such as breast cancer, nasopharyngeal cancer, gastric cancer, liver cancer, bowel cancer, and lung cancer appear to be effective because they all have the same C-erbB amplification as MDS.
实施例 3 用 V— erbB正基因寡核苷酸诊断 MDS的效果  Example 3 Effect of Diagnosing MDS Using V-erbB Positive Gene Oligonucleotides
1.原位杂交法检测:  1. Detection in situ hybridization:
如实施例 1所述合成对应于反基因寡核苷酸 SEQ ID NO: 4的 V-erbB正基因寡核苷酸 SEQ ID N0.6, 并用地高辛 (DIG) 标记该 寡核苷酸, 采用该标记的寡核苷酸作探针, 经原位杂交方法检测了 33例 MDS和 19例其它血液病及 3例可疑 MDS的 C— erbB基因的 扩增情况, 结果显示全部 33例 MDS的原位杂交均呈阳性, 19例其 它血液病中有 1例呈阳性, 3例可疑 MDS均为阳性。  The V-erbB positive gene oligonucleotide SEQ ID N0.6 corresponding to the antigenic oligonucleotide SEQ ID NO: 4 was synthesized as described in Example 1, and the oligonucleotide was labeled with digoxin (DIG), Using the labeled oligonucleotide as a probe, the amplification of the C-erbB gene in 33 cases of MDS and 19 other hematological diseases and 3 suspected MDS was detected by in situ hybridization. The results showed that all 33 cases of MDS In situ hybridization was positive, 1 of 19 other hematological diseases was positive, and 3 suspected MDS were positive.
2. PCR方法  2. PCR method
按常规方法提取骨髓细胞 DNA 作模板, 以本发明的特异 PCR 引物对 5, ATG AAA TGT GCC CAT TTT ATA (SEQ ID NO.l ) 和 5, CAA AAC TTT GAC CTT TTT ( SEQ ID NO.2 )为引物进行 PCR 扩增, 扩增条件为 94Ό 2分钟进行模板变性, 然后进行 35个循环, 每个循环中变性条件为 94°C 0.5 分钟, 退火条件为 56°C 1 分钟和 延伸条件为 72°C 1.5分钟。 最后一次循环后 72°C延伸 5分钟。 PCR 产物在 1.8%琼脂糖凝胶上电泳检测。 根据电泳带型作基因诊断。 ' 依照上述方法检测了 32例 MDS, 12例可疑 MDS, 53例其他 血液病和 8例正常骨髓的样品, 其是以上述样品的 DNA作模板进行 PCR,结果 24例 MDS PCR阳性,阳性率占 75%。 11例可疑 MDS PCR 阳性, 阳性率占 91.6%。 Bone marrow cell DNA was extracted as a template according to a conventional method, and the specific PCR primer pairs 5, ATG AAA TGT GCC CAT TTT ATA (SEQ ID NO. 1) and 5, CAA AAC TTT GAC CTT TTT (SEQ ID NO. 2) of the present invention were used as a template. The primers were used for PCR amplification. The amplification conditions were 94Ό 2 minutes for template denaturation, and then 35 cycles. Each cycle was 94 ° C for 0.5 minutes, annealing conditions were 56 ° C for 1 minute, and extension conditions were 72. ° C for 1.5 minutes. After 5 minutes at 72 ° C after the last cycle. The PCR products were detected by electrophoresis on a 1.8% agarose gel. Genetic diagnosis based on electrophoretic band pattern. '' Samples of 32 cases of MDS, 12 cases of suspected MDS, 53 cases of other blood diseases, and 8 cases of normal bone marrow were tested according to the method described above, using the DNA of the sample as a template PCR, the results of 24 cases of MDS PCR were positive, the positive rate accounted for 75%. Eleven suspected MDS PCR were positive, with a positive rate of 91.6%.

Claims

权利要求 Rights request
1、一对特异于 V-erbB基因的 PCR引物, 具有如下核苷酸序列: 5, ATG AAA TGT GCC CAT TTT ATA 3 ' (SEQ ID NO.l ) 和 5, CAA AAC TTT GAC CTT TTT 3 ' (SEQ ID N0.2)o 1. A pair of PCR primers specific for the V-erbB gene, having the following nucleotide sequences: 5, ATG AAA TGT GCC CAT TTT ATA 3 '(SEQ ID NO. 1) and 5, CAA AAC TTT GAC CTT TTT 3' (SEQ ID N0.2) o
1、 由权利要求 1的 PCR引物对限定的 V-erbB基因的 DNA序 列:  1. The DNA sequence of the V-erbB gene defined by the PCR primer pair of claim 1:
5, ATGAAATGTGCCCATTTTATAGATGGTCCCCACTGTGTGAAG 5, ATGAAATGTGCCCATTTTATAGATGGTCCCCACTGTGTGAAG
GCCTGCCCCGCTGGGGTCCTGGGTGAGAATGATACCCTGGTCCGCCTGCCCCGCTGGGGTCCTGGGTGAGAATGATACCCTGGTCC
GGAAGTATGCAGATGCCAATGCTGTTTGCCAGCTCTGCCATCCAGGAAGTATGCAGATGCCAATGCTGTTTGCCAGCTCTGCCATCCA
AACTGTACACGAGGGTGCAAAGGACCAGGTCTTGAAGGATGTCAACTGTACACGAGGGTGCAAAGGACCAGGTCTTGAAGGATGTC
CAAATGGCTCCAAAACTCCATCTATCGTGGCTGGTGTTGTCGGACAAATGGCTCCAAAACTCCATCTATCGTGGCTGGTGTTGTCGGA
GGACTCCTGTGCCTGGTTGTGGTTGGTCTAGGCATCGGTCTTTAGGACTCCTGTGCCTGGTTGTGGTTGGTCTAGGCATCGGTCTTTA
CCTGCGGCGACGTCATATCGTGCGGAAGCGCACCCTGCGCAGGCCTGCGGCGACGTCATATCGTGCGGAAGCGCACCCTGCGCAGG
CTGCTGCAAGAGAGGGAGCTTGTCGAACCACTGACACCCAGTCTGCTGCAAGAGAGGGAGCTTGTCGAACCACTGACACCCAGT
GGGGAGGCACCAAACCAGGCCCACCTGAGAATTTTAAAGGAAGGGGAGGCACCAAACCAGGCCCACCTGAGAATTTTAAAGGAA
ACAGAATTTAAAAAGGTCAAAGTTTTG 3 ' ( SEQ ID N0.3 ) . ACAGAATTTAAAAAGGTCAAAGTTTTG 3 '(SEQ ID N0.3).
3、 权利要求 2的 DNA序列中所包含的正基因寡核苷酸序列, 选自如下一组: 3. The positive gene oligonucleotide sequence contained in the DNA sequence of claim 2, selected from the group consisting of:
(a) 5, GTT TGC CAG CTC TGC CAT 3, (SEQ ID N0.6), (a) 5, GTT TGC CAG CTC TGC CAT 3, (SEQ ID N0.6),
(b) 5, CAG GCC CAC CTG AG A ATT 3 ' (SEQ ID NO.7), 和(b) 5, CAG GCC CAC CTG AG A ATT 3 '(SEQ ID NO.7), and
(c) 除 (a)和 (b)之外的长度为 10— 30 bp的任何寡核苷酸。 (c) Any oligonucleotide other than (a) and (b) that is 10-30 bp in length.
4、 V-erbB基因的反基因寡核苷酸, 选自:  4. The anti-gene oligonucleotide of the V-erbB gene is selected from:
(a) 5, ATG GCA GAG CTG GCA AAC 3 ' (SEQ ID NO.4) 和 (a) 5, ATG GCA GAG CTG GCA AAC 3 '(SEQ ID NO. 4) and
(b) 5, AAT TCT CAG GTG GGC CTG 3 ' (SEQ ID NO.5 )(b) 5, AAT TCT CAG GTG GGC CTG 3 '(SEQ ID NO.5)
5、 权利要求 4的反基因寡核苷酸, 其为硫代磷酸修饰。 5. The antigenic oligonucleotide according to claim 4, which is a phosphorothioate modification.
6、 权利要求 2的 DNA序列转录的 niR A。  6. The niR A transcribed from the DNA sequence of claim 2.
7、 一种疫苗, 其包括权利要求 6所述的 m NA翻译的多肽或 权利要求 2 所述的 DNA。 8、 一种药物组合物, 它含有权利要求 4或 5所述的反基因寡核 苷酸以及药物学上所接受的载体。 7. A vaccine comprising the m NA translated polypeptide according to claim 6 or the DNA according to claim 2. 8. A pharmaceutical composition comprising the antigenic oligonucleotide according to claim 4 or 5 and a pharmaceutically acceptable carrier.
9、 权利要求 8的药物组合物, 其还含有除 V-erbB基因之外其 它与癌症发病相关的基因的反基因寡核苷酸。  9. The pharmaceutical composition according to claim 8, further comprising an anti-gene oligonucleotide of genes other than the V-erbB gene, which are related to the onset of cancer.
10、 一种诊断试剂盒, 它含有权利要求 1 所述的寡核苷酸引物 或针对权利要求 2所述的序列所设计的任何一对寡核苷酸引物。  10. A diagnostic kit comprising the oligonucleotide primer according to claim 1 or any pair of oligonucleotide primers designed for the sequence according to claim 2.
11、 一种诊断试剂盒, 它含有权利要求 3 所述的正基因寡核苷 酸。  11. A diagnostic kit comprising the positive gene oligonucleotide according to claim 3.
12、 权利要求 2所述的 DNA序列、 权利要求 6所述的疫苗或 权利要求 4或 5所述的反基因寡核苷酸在制备治疗和预防骨髓增生 异常综合征、 白血病和其他多种癌症及其早期的药物中的应用。  12. The DNA sequence according to claim 2, the vaccine according to claim 6 or the anti-gene oligonucleotide according to claim 4 or 5 in the preparation and treatment of myelodysplastic syndrome, leukemia and many other cancers And its early applications.
13、 权利要求 10或 11所述的诊断试剂盒在诊断骨髓增生异常 综合征, 白血病, 及其它多种癌症及其早期中的应用。  13. Use of the diagnostic kit according to claim 10 or 11 in the diagnosis of myelodysplastic syndrome, leukemia, and various other cancers and their early stages.
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