VEGF反义RNA对人食管癌细胞生长转移的抑制作用

目的:探讨研究血管内皮生长因子(vascularendothelialgrowthfactor,VEGF)反义RNA在抑制恶性肿瘤生长和转移及抗肿瘤血管生成治疗中的意义。方法:采用脂质体法将反义VEGFcDNA质粒转染入食管癌细胞TE1;MTT法检测细胞增殖情况;原位杂交和RTPCR技术检测VEGF的表达水平,FCM分析细胞周期,并对转染前后细胞进行裸鼠体内生长转移等生物学行为实验。结果:转染反义VEGFcDNA质粒的TE1细胞中VEGF表达水平降低,与对照组比较,裸鼠体内成瘤时间延长,肿瘤生长速度减慢,质量和体积差异有显著性意义(P<0.05)。结论:VEGF反义RNA能抑制食管癌TE1细胞VEGF表达,对裸鼠体内TE1细胞的生长有抑制作用,有望成为食管癌基因治疗的优选基因之一。     

血管内皮生长因子的表达和血管生成与人胃癌移植瘤生长的关系

探讨血管内皮生长因子的表达与肿瘤血管生成的关系。方法 :将VEGF165正、反义RNA表达载体导入人胃癌细胞 ,观察接种VEGF高表达和低表达胃癌细胞裸鼠移植瘤的生长情况 ,并对移植瘤进行组织学检查 ,检测其血管密度、组织增生及坏死程度等变化。结果 :VEGF正义转染细胞所致移植瘤的生长速度明显快于反义转染细胞所致的移植瘤 ;组织学检查发现 ,正义转染细胞移植瘤的血管密度显著高于反义转染细胞所致的肿瘤。结论 :血管内皮生长因子通过启动血管生成而促进肿瘤的生长 ,阻断血管内皮生长因子的产生可以抑制肿瘤的生长。     

脂质体-c-erbB-2反义寡核苷酸对人卵巢癌裸鼠皮下移植瘤的治疗作用

目的　探讨c erbB 2反义寡脱氧核苷酸 (ASODN )对人卵巢癌裸鼠皮下移植瘤的治疗作用。方法　将 15只裸鼠建立人卵巢癌皮下移植瘤模型 ,然后随机分成 3组予以不同条件处理 :对照组 (腹腔注射转染液和脂质体 ) ,正义治疗组 (腹腔注射脂质体 c erbB 2 -SODN ) ,反义治疗组 (腹腔注射脂质体 c erbB 2 -ASODN )。治疗期间定期观测裸鼠体重和肿瘤体积 ,计算抑瘤率及肿瘤缩小率。利用RT -PCR技术比较治疗后各组肿瘤组织中c erbB 2基因水平。结果　反义治疗组与正义治疗组的抑瘤率分别为 71.2 %和 7.6% ,反义治疗组肿瘤缩小率为 2 2 .7% ,与正义治疗组相比较有显著性差异。各组裸鼠体重变化无明显差异。RT -PCR结果显示反义治疗组c erbB 2表达水平降低约 61.0 %。结论　脂质体 c erbB 2 -ASODN对人卵巢癌裸鼠皮下移植瘤有一定的治疗作用 ,可能成为日后卵巢癌基因治疗的重要途径。     

CH50多肽真核表达载体pCH510的构建、表达及体内趋化和抑瘤作用

目的：探讨血管内皮生长因子的表达与肿瘤血管生成的关系。方法：将VEGF165正、反义RNA表达载体导入人胃癌细胞,观察接种VEGF高表达和低表达胃癌细胞裸鼠移植瘤的生长情况,并对移植瘤进行组织学检查,检测其血管密度、组织增生及环死程度等变化。结果：VEGF正义转染细胞所致移植瘤的生长速度明显快于反义转染细胞所致的移植瘤;组织学检查发现,正义转染细胞移植瘤的血管密度显著高于的转染细胞所致的肿瘤。结论：血管皮生长因子通过启动血管生成而促进肿瘤的生长,阻断血管内皮生长因子的产生可以抑制肿瘤的生长。     

Matrilysin-specific antisense oligonucleotide inhibits liver metastasis of human colon cancer cells in a nude mouse model

Human colon cancer frequently develops liver metastasis. Matrilysin (MMP-7), the smallest member of the matrix metalloproteinase (MMP) family, is commonly produced by human colon carcinoma cells and has been suggested to be involved in the progression and metastasis of this type of cancer. In the present study, we tested the effect of a matrilysin-specific antisense phosphorothioate oligonucleotide on liver metastasis of the human colon carcinoma cell line WiDr in nude mice. In culture, the antisense oligonucleotide moderately inhibited the secretion of matrilysin by WiDr cells. Injection of WiDr cells into the spleen of nude mice produced many metastatic tumor nodules in the liver. When the antisense oligonucleotide was injected daily into the mice for 11 days, the formation of the metastatic tumor nodules was strongly inhibited in a dose-dependent manner. An inhibition of liver metastasis of over 70% was obtained at a dose of 120 μg of the oligonucleotide per mouse. The antisense oligonucleotide did not inhibit tumor growth in spleen and in liver. A scrambled control oligonucleotide had no effect on liver metastasis of WiDr cells. Our results demonstrate an important role of matrilysin in liver metastasis of human colon cancer and the therapeutic potential of matrilysin antisense oligonucleotides for the prevention of metastasis. Int. J. Cancer 76:812–816, 1998.© 1998 Wiley-Liss, Inc.     

转染外源p53基因在荷瘤裸鼠人肠癌细胞中表达的检测

采用直接注射外源ＤＮＡ－脂质体复合物的方法分别在荷瘤裸鼠人肠癌组织中转染外源正义ｐ５３ｃＤＮＡ和反义ｐ５３ｃＤＮＡ的重组表达质粒及非整合型哺乳动物表达载体ｐＲＥＰ９，并以注射等量生理盐水为对照，然后应用链菌素亲生物蛋白－过氧化酶免疫组化法检测肿瘤组织中突变型ｐ５３蛋白的表达。结果表明：体外培养ＳＷ１１１６细胞中约有５０％为突变型ｐ５３蛋白阳性；转染反义ｐ５３ｃＤＮＡ表达质粒组的裸鼠移植瘤细胞ｐ５３蛋白阳性率为２５％，而注射生理盐水、转染ｐＲＥＰ９及正义ｐ５３ｃＤＮＡ表达质粒组阳性率分别为６６．７％，７７．８％，６６．７％；前者与后三者之间有显著住差异（Ｐ＜０．０１，Ｘ［２］检验），但各组间肿瘤大小并无显著性差异。据此认为，肿瘤体内直接转染外源反义ｐ５３基因能封闭肠癌ＳＷ１１１６细胞中突变型ｐ５３基因的表达。     

Down-regulation of the insulin-like growth factor I receptor by antisense RNA can reverse the transformed phenotype of human cervical cancer cell lines

The insulin-like growth factor I receptor (IGF-IR) plays an essential role in the establishment and maintenance of transformed phenotype, and interference with the IGF-IR pathway by antisense or dominant-negative mutants causes reversal of the transformed phenotype in many rodent and human tumor cell lines. We stably transfected an IGF-IR antisense mRNA expression plasmid into human papillomavirus (HPV)-negative C33a cell line, HPV-16-positive SiHa cell line, and HPV-18-positive HeLa S3 cell line to determine whether the IGF-IR could be a target for cervical cancer cells, especially in the presence of HPV. Approximately 30-80% down-regulation of IGF-IR expression was observed by Western blot in antisense transfected clones. There was a little inhibition in monolayer growth in all cell lines. In C33a cells, wild-type and sense clones formed 92-146 colonies in soft agar after 3 weeks; antisense clones formed <12 colonies. In SiHa cells, wild-type and sense clones formed approximately 60 colonies after 5 weeks; antisense clones formed 0-3 colonies. In HeLa S3 cells, wild-type and sense clones formed 218-291 colonies in soft agar after 2 weeks; antisense clones formed 14-160 colonies. There was a good correlation between IGF-IR down-regulation level and inhibition of transformation in soft agar. Tumorigenesis in nude mice was strongly inhibited in HeLa S3 and SiHa clones transfected with the antisense. These results indicate that down-regulation of IGF-IR by antisense RNA can reverse the transformed phenotype of human cervical cancer cells, even when harboring malignant type HPVs.     

端粒酶RNA的反义寡核苷酸抑制裸鼠移植瘤生长的研究

背景与目的许多研究已证明:端粒酶的激活在肺癌的发生、发展中具有重要作用,因而成为肺癌基因治疗的重要靶点之一。本研究旨在探讨针对人端粒酶RNA成分的反义寡核苷酸对裸鼠移植瘤的生长抑制作用。方法应用人肺腺癌细胞株A549细胞构建裸鼠皮下移植瘤模型,18只荷瘤裸鼠随机分为反义寡核苷酸组(Antisense Oligodeoxynucleotide Group,Group ASODN)、正义寡核苷酸组(Sense Oligodeoxynucleotide Group,Group SODN)和生理盐水对照组(Normal Saline Group,Group NS),每组6只,瘤体内分别注射反义寡核苷酸/阳离子脂质体复合物、正义寡核苷酸/阳离子脂质体复合物和生理盐水,均为每日1次,共14次,观察移植瘤的生长情况。结果反义寡核苷酸组、正义寡核苷酸组的体积抑瘤率分别是43.94%、6.91%,统计学检验有非常显著性差异(t=6.17,P<0.001)。治疗过程中裸鼠对药物耐受良好,无恶心、呕吐等消化道症状,未见皮下出血,治疗结束时各组裸鼠的体重较治疗开始时略有增加。结论瘤体内注射脂质体包封的端粒酶RNA的反义寡核苷酸能够明显抑制裸鼠体内移植瘤的生长。     

5-脂氧合酶活化蛋白抑制剂MK886治疗裸鼠人结肠癌移植瘤的实验

 目的观察5-脂氧合酶活化蛋白(FLAP)抑制剂MK886对裸鼠人结肠癌移植瘤的治疗作用,并探讨其抗肿瘤的可能机制。方法以HT-29人结肠癌细胞制备裸鼠人结肠癌移植瘤模型,15只荷瘤裸鼠随机分为三组,治疗组以MK886溶解在二甲基亚砜中投药,两对照组分别给以二甲基亚砜及不作任何治疗。治疗期间观察肿瘤生长情况,治疗结束后处死裸鼠并取瘤,测量肿瘤体积重量,用免疫组化方法检测肿瘤微血管密度,用TUNEL法检测肿瘤细胞凋亡情况。结果15只裸鼠全部成瘤,且实验过程中无一裸鼠死亡;通过测量瘤体积、瘤重结果显示,MK886可抑制人结肠癌裸鼠皮下移植瘤的生长;实验还证实MK886对人结肠癌裸鼠皮下移植瘤具有诱导肿瘤细胞凋亡及抗血管生成作用。结论MK886对于裸鼠人结肠癌移植瘤具有明显的治疗效果,MK886可能通过诱导肿瘤细胞凋亡、抑制肿瘤微血管形成等机制控制人结肠癌的生长。     

Treatment of human breast cancer cells with antisense RNA to the type I insulin-like growth factor receptor inhibits cell growth, suppresses tumorigenesis, alters the metastatic potential, and prolongs survival in vivo

The type I insulin-like growth factor receptor (IGF-IR) plays an important role in the growth and transformation of breast cancer cells. In this study, we investigated the effects of treatment with an antisense IGF-IR construct on cells from the highly metastatic estrogen receptor-negative human breast cancer cell line MDA-MB-435s. The cells carrying the antisense IGF-IR had a markedly reduced expression of IGF-IR, had a significant decrease in cell proliferation, and lost the ability to form colonies in soft agar. There was a delay in tumor formation and a dramatic reduction in tumor size when cells carrying the antisense IGF-IR were injected into either nude or severe combined immunodeficient (scid) beige mice. We have also provided data that show that the scid beige mouse is a more suitable model for studying metastasis of the MDA-MB-435s cells. All of the scid beige mice injected with cells carrying the control construct had metastasis to the lungs, whereas lungs from the nude mice had no apparent metastatic sites after 11 weeks. When cells carrying antisense IGF-IR were injected subcutaneously in scid beige mice, the animals had a significant increase in survival compared with mice injected with cells carrying the control construct. Taken together, these results indicate that the IGF-IR can play a critical role in the progression of breast cancer. Our studies provide a basis for the development of future treatment strategies targeting the IGF-IR in metastatic breast cancer.     

Bcl-2反义寡核苷酸对裸鼠人肺癌移植瘤抑制作用的研究(英文)

目的探讨 Bcl-2反义寡核核苷酸(ASODN)对裸鼠人肺癌移植瘤的成瘤能力和生长的抑制作用。方法将经硫代修饰的 Bcl-2 ASODN 导入非小细胞肺癌 NCI-H460细胞内,然后将这种细胞接种于裸鼠皮下,观察肿瘤出现的时间和肿瘤体积的变化,并计算抑瘤率。同时采用未经处理的 NCI-H460细胞接种于裸鼠背部皮下建立裸鼠人肺癌移植瘤模型,待长出瘤结节直径为≥5mm 后,分为 Bcl-2 ASODN 实验组、生理盐水对照组和无义寡核苷酸对照组3组。实验组用15mg/kg ASODN 两天一次直接瘤内注射,连用3周,测肿瘤大小变化和组织形态学改变。结果 Bcl-2 ASODN 作用后的 NCI-H460细胞在裸鼠皮下成瘤能力降低,最大抑瘤率达87.5%(P<0.01)。Bcl-2 ASODN 处理的NCI-H460细胞在裸鼠皮下成瘤的平均时间延长为12.6天(P<0.01)。在治疗 NCI-H460细胞裸鼠移植瘤过程中,生理盐水对照组和无义对照组的瘤块体积进行性增大,而 Bcl-2 ASODN 组的瘤块生长很缓慢,治疗组和两个对照组瘤重相比均有显著性差异(P<0.05)。治疗后第30天剥离瘤块,两个治疗组分别与两个对照组瘤重相比均有显著性差异(P<0.01)。Bcl-2 ASODN 治疗组裸鼠肺癌细胞移植瘤的生长受到明显抑制,抑瘤率为71.0%。瘤块病理学检查可见,Bcl-2 ASODN 治疗组瘤块内有大片的变性坏死灶,结缔组织增生,炎性细胞浸润;而两个对照组瘤体内癌细胞呈弥漫性密集分布。结论 Bcl-2反寡义核苷酸能降低肺癌细胞的成瘤能力,抑制移植瘤生长。     

Bcl-2反义寡核苷酸对裸鼠人肺癌移植瘤抑制作用的研究

目的探讨Bcl-2反义寡核核苷酸(ASODN)对裸鼠人肺癌移植瘤的成瘤能力和生长的抑制作用。方法将经硫代修饰的Bcl-2ASODN导入非小细胞肺癌。NCI-H460细胞内,然后将这种细胞接种于裸鼠皮下,观察肿瘤出现的时间和肿瘤体积的变化,并计算抑瘤率。同时采用未经处理的NCI-H460细胞接种于裸鼠背部皮下建立裸鼠人肺癌移植瘤模型,待长出瘤结节直径为≥5mm后,分为Bcl-2ASODN实验组、生理盐水对照组和无义寡核苷酸对照组3组。实验组用15mg/kgASODN两天一次直接瘤内注射,连用3周,测肿瘤大小变化和组织形态学改变。结果Bcl-2ASODN作用后的NCI-H460细胞在裸鼠皮下成瘤能力降低,最大抑瘤率达87.5%(P相似文献   

Truncated midkine induces transformation of cultured cells and short latency of tumorigenesis in nude mice

To test whether truncated midkine (tMK), an alternative spliced form of exon 3, induces the transformation of mammalian cells, tMK cDNA was transfected into SW-13 cells. Although, the growth of MK transfectant (SW-13/MK) cells was close to those of the parent SW-13 and vector transfectant (SW-13/empty) cells, the growth of tMK transfectant (SW-13/tMK) cells was significantly promoted compared with that of the above three cells. Both SW-13/tMK and SW-13/MK formed colonies in 0.35% soft agar, indicating that tMK and MK induce mammalian cell transformation. SW-13/tMK frequently formed solid tumor after its subcutaneous injection into nude mice. Additionally, in SW-13/tMK and SW-13/MK-injected mice, advanced visible tumors were detected compared with that in the case of SW-13/empty-injected mice as control. These findings indicate that tMK induces mammalian cell transformation and promotes tumor establishment in vivo.     

nm23H1对肝癌细胞增殖及体内肿瘤形成能力的影响

目的 研究ｎｍ２３Ｈ１对肝癌细胞增殖、体内肿瘤形成和转移的影响。方法 构建正反义ｎｍ２３Ｈ１ ｃＤＮＡ表达载体并转染肝癌细胞ＳＭＭＣ－７７２１,得到ｎｍ２３Ｈ１稳定最高和最低表达的两种细胞克隆,并进行细胞生长曲线测定、裸鼠皮下及脾包膜下移植试验。结果 转染反义表达载体后,肝癌细胞ｍＲＮＡ和蛋白表达下降,在体内、体外增殖加速;转染正义表达载体后,出现与之相反的结果。正义表达细胞接种组裸鼠肿瘤结节形成     

正反义人乙酰肝素酶真核表达体系构建及其意义的研究

目的:构建正反义人乙酰肝素酶(HPA)的肝癌细胞克隆表达体系,研究其对肝癌细胞转移潜能的影响。方法:建立正反义人HPA真核表达载体,脂质体法转染高转移人肝癌细胞系HCC-P,G418选择培养,以RT-PCR和免疫组织化学检测HPA mRNA及蛋白表达。细胞计数,MTT实验测定细胞生长状况。裸鼠尾静脉注射转染肿瘤细胞,30 d后称肺脏质量,计数肺表面转移结节数,比较不同转染细胞的转移潜能。结果:限制性内切酶及测序证实载体构建成功;RT-PCR证实,转染正反义载体的细胞在HPA mRNA水平上相差10.13倍;免疫组织化学证实,HPA高效稳定表达于转染正义载体的细胞胞质及胞膜上;细胞生长曲线和MTT实验表明,转染基因对细胞生长无明显影响,P>0.05。注射转染反义肝癌细胞组荷瘤鼠肺脏质量和肺表面转移结节数较对照组显著减少,正义组则相反,P<0.01。结论:成功克隆正反义人HPA,并稳定转染HCC-P。HPA基因对肝癌细胞转移潜能具有促进作用,而反义基因则抑制肿瘤的生长。     

Increased survival and decreased tumor size due to intratumoral injection of ethanol followed by administration of immature dendritic cells

Antigen-presenting dendritic cells (DC), loaded in vitro with tumor associated antigens (TAAs), are now used for antitumor therapy. However, little is known about the interaction between DC and TAAs within tumor microenvironment. This study was conducted to evaluate if antitumor immunity can be induced by injecting immature DC into necrotized tumor tissues. A mouse model of colon cancer was established by subcutaneous injection of CMT-93 (a murine colon cancer cell) in the flank of C57BL/6 mice. When the tumors became about 10 mm in diameter, a portion of the tumor nodules was necrotized by injecting 100 micro l of 100% ethanol. Bone marrow-derived immature DC from syngenic mice were injected into the tumors, 48 h after ethanol injection. The size of the tumor and the survival time of the mice were studied. Immunohistochemical methodology was employed to detect injected DC and to evaluate the levels of maturation of DC. Tumor-bearing mice injected with ethanol plus DC survived for longer duration compared to untreated mice (p<0.05). Three weeks after therapy, the sizes of the tumor nodules were reduced compared to untreated mice. Forty-eight hours after injection, the injected DC were detected in the spleen. The stimulatory capacity of spleen DC isolated from mice treated with ethanol plus DC were significantly higher compared to that of untreated mice (p<0.05). Mature DC expressing CD86 were detected in cancer nodule after injecting ethanol plus DC, however, these were almost absent in tumor-bearing mice in situ. Taken together, direct administration of ethanol plus DC in the tumor nodules represents a new therapeutic approach for antitumor immunotherapy.     

Inhibition of cell proliferation, invasion, tumor growth and metastasis by an oral non-antimicrobial tetracycline analog (COL-3) in a metastatic prostate cancer model

Antibiotic forms of tetracycline exhibit antitumor activity in some tumor models. However, their low in vivo efficacy and associated morbidity limit their long-term application in cancer therapy. This report appraises the efficacy of doxycycline (DC) and non-antimicrobial, chemically modified tetracyclines (CMTs) against prostate cancer. Both DC and several CMTs inhibited prostate tumor cell proliferation in vitro. Some of the CMTs were significantly more potent than DC. One of the CMTs, 6-deoxy, 6-demethyl, 4-de-dimethylamino tetracycline (CMT-3, COL-3), was the most potent inhibitor (50% inhibition dose [GI(50)] < or = 5.0 ,microg/ml). Exposure of tumor cells to CMT-3 induced both apoptosis and necrosis. Mitochondrial depolarization and increased levels of reactive hydroxyl radicals were also observed in cells treated with CMT-3. Cell cycle arrest at the G(0)/G(1) compartment was observed in CMT-3- and DC-treated cells. DC and CMTs also inhibited the invasive potential of the tumor cells in vitro, from 10% (CMT-6) to >90% (CMT-3). CMT-3 and DC decreased matrix metalloproteinase (MMP)-2, tissue inhibitor of MMP (TIMP)-1 and TIMP-2 secretion in treated cultures and inhibited activity of secreted MMPs, CMT-3 was a stronger inhibitor. Daily oral gavage of DC and CMT-3 inhibited tumor growth and metastasis in the Dunning MAT LyLu rat prostate tumor. Decreases in tumor growth (27-35%) and lung metastases were observed (28.9 +/- 15.4 sites/animal [CMT-3-treated] versus 43.6 +/- 18.8 sites/animal [DC-treated] versus 59.5 +/- 13.9 [control]; p < 0.01]. A delay in tumor growth (27 +/- 9.3%, p < 0.05), reduction in metastases (58 +/- 8%) and decrease in tumor incidences (55 +/- 9%, CMT-3-treated) were also observed, when rats were predosed for 7 days. No significant drug-induced morbidity was observed in any of the animals. These results, along with a recently concluded clinical trial, suggest a potential use of CMT-3 as an oral, nontoxic drug to treat metastatic prostate and other cancers.     

Gene therapy of human bladder cancer with adenovirus-mediated antisense basic fibroblast growth factor.

We previously investigated the role of basic fibroblast growth factor (bFGF) as a mediator of angiogenesis, tumorigenicity, and metastasis of transitional cell carcinoma (TCC) of the bladder. In the present study, we determined whether adenoviral-mediated antisense bFGF gene transfer therapy (Ad bFGF-AS) would inhibit TCCs growing in the subcutis of nude mice. In vitro, Ad bFGF-AS inhibited endothelial cell proliferation and enhanced apoptosis. The highly metastatic human TCC cell line 253J-BV(R) was implanted ectopically in the subcutis of athymic nude mice, and therapy was begun when the tumors reached a diameter between 5 and 7 mm. Intralesional therapy with Ad bFGF-AS decreased the in vivo expression of bFGF and matrix metalloproteinase type 9 mRNA and protein, and reduced microvessel density and enhanced endothelial cell apoptosis. Tumor growth was significantly inhibited by Ad bFGF-AS (mean, 58 mg) compared with controls [saline (mean, 562 mg), beta-galactosidase adenovirus (mean, 586 mg), and sense bFGF adenoviral therapy (Ad bFGF-S; mean, 3012 mg)]. These results suggest that Ad bFGF-AS therapy affects endothelial cells directly and tumor cells indirectly through down-regulation of bFGF and matrix metalloproteinase type 9, resulting in endothelial cell apoptosis and significant tumor growth inhibition. Furthermore, these studies confirm that bFGF expression is a valid target for the therapy of bladder cancer.     

重组腺病毒介导反义c-myc基因对人肝癌细胞系的治疗作用

目的：探讨重组腺病毒介导反义ｃ－ｍｙｃ基因（Ａｄ－ＡＳｍｙｃ）治疗人肝癌细胞的作用。方法：观察Ａｄ－ＡＳｍｙｃ对人肝癌细胞系的转导效率,通过细胞生长曲线、克隆形成实验、ＤＮＡ片段化分析、ＲＴ－ＰＣＲ、裸鼠皮下移植瘤治疗实验,分析Ａｄ－ＡＳｍｙｃ对人肝癌细胞系Ｂｅｌ－７４０２、ＱＳＧ－７７０１、ＳＭＭＣ－７７２１和ＨＣＣ－９２０４细胞生长和ｃ－ｍｙｃ基因表达及裸鼠肿瘤生长的抑制作用。结果：Ａｄ－ＡＳｍｙｃ可高效转导人肝癌细胞系,抑制细胞生长;转染细胞克隆形成能力降低,克隆成活率为对照组的５３．９％～６９．１％,ｃ－ｍｙｃ基因表达下降;Ａｄ－ＡＳｍｙｃ处理肝癌细胞,ＤＮＡ凝胶电泳出现明显的梯形条带,瘤内注射Ａｄ－ＡＳｍｙｃ可抑制裸鼠皮下移植瘤生长。结论：重组腺病毒介导的反义ｃ－ｍｙｃ基因转移,有可能成为肝癌基因治疗