Antibody-platinum(IV)prodrugs conjugates for targeted treatment of cutaneous squamous cell carcinoma

Antibody-drug conjugates(ADCs)are a new type of targeting antibodies that conjugate with highly toxic anticancer drugs via chemical linkers to exert high specificity and efficient killing of tumor cells,thereby attracting considerable attention in precise oncology therapy.Cetuximab(Cet)is a typical antibody that offers the benefits of good targeting and safety for individuals with advanced and inoperable cutaneous squamous cell carcinoma(cSCC);however,its anti-tumor activity is limited to a single use.Cisplatin(CisPt)shows good curative effects;however,its adverse effects and non-tumor-targeting ability are major drawbacks.In this study,we designed and developed a new ADC based on a new cytotoxic platinum(IV)prodrug(C8Pt(IV))and Cet.The so-called antibody-platinum(IV)prodrugs conjugates,named Cet-C8Pt(IV),showed excellent tumor targeting in cSCC.Specifically,it accurately delivered C8Pt(IV)into tumor cells to exert the combined anti-tumor effect of Cet and CisPt.Herein,metabolomic analysis showed that Cet-C8Pt(IV)promoted cellular apoptosis and increased DNA damage in cSCC cells by affecting the vitamin B6 metabolic pathway in tumor cells,thereby further enhancing the tumor-killing ability and providing a new strategy for clinical cancer treatment using antibody-platinum(IV)prodrugs conjugates.

Role of deubiquitinase JOSD2 in the pathogenesis of esophageal squamous cell carcinoma

BACKGROUND Esophageal squamous cell carcinoma(ESCC)is a deadly malignancy with limited treatment options.Deubiquitinases(DUBs)have been confirmed to play a crucial role in the development of malignant tumors.JOSD2 is a DUB involved in con-trolling protein deubiquitination and influencing critical cellular processes in cancer.AIM To investigate the impact of JOSD2 on the progression of ESCC.METHODS Bioinformatic analyses were employed to explore the expression,prognosis,and enriched pathways associated with JOSD2 in ESCC.Lentiviral transduction was utilized to manipulate JOSD2 expression in ESCC cell lines(KYSE30 and RESULTS )Preliminary research indicated that JOSD2 was highly expressed in ESCC tissues,which was associated with poor prognosis.Further analysis demonstrated that JOSD2 was upregulated in ESCC cell lines compared to normal esophageal cells.JOSD2 knockdown inhibited ESCC cell activity,including proliferation and colony-forming ability.Moreover,JOSD2 knockdown decreased the drug resistance and migration of ESCC cells,while JOSD2 overexpression enhanced these phenotypes.In vivo xenograft assays further confirmed that JOSD2 promoted tumor proliferation and drug resistance in ESCC.Mechanistically,JOSD2 appears to activate the MAPK/ERK and PI3K/AKT signaling pathways.Mass spectrometry was used to identify crucial substrate proteins that interact with JOSD2,which identified the four primary proteins that bind to JOSD2,namely USP47,IGKV2D-29,HSP90AB1,and PRMT5.CONCLUSION JOSD2 plays a crucial role in enhancing the proliferation,migration,and drug resistance of ESCC,suggesting that JOSD2 is a potential therapeutic target in ESCC.

Personalized targeted therapy for esophageal squamous cell carcinoma

Esophageal squamous cell carcinoma continues to heavily burden clinicians worldwide. Researchers have discovered the genomic landscape of esophageal squamous cell carcinoma, which holds promise for an era of personalized oncology care. One of the most pressing problems facing this issue is to improve the understanding of the newly available genomic data, and identify the driver-gene mutations, pathways, and networks. The emergence of a legion of novel targeted agents has generated much hope and hype regarding more potent treatment regimens, but the accuracy of drug selection is still arguable. Other problems, such as cancer heterogeneity, drug resistance, exceptional responders, and side effects, have to be surmounted. Evolving topics in personalized oncology, such as interpretation of genomics data, issues in targeted therapy, research approaches for targeted therapy, and future perspectives, will be discussed in this editorial.

Anal squamous cell carcinoma: An evolution in disease and management

Anal cancer represents less than 1% of all new cancers diagnosed annually in the United States. Yet, despite the relative paucity of cases, the incidence of anal cancer has seen a steady about 2% rise each year over the last decade. As such, all healthcare providers need to be cognizant of the evaluation and treatment of anal squamous cell carcinoma. While chemoradiation remains the mainstay of therapy for most patients with anal cancer, surgery may still be required in recurrent, recalcitrant and palliative disease. In this manuscript, we will explore the diagnosis and management of squamous cell carcinoma of the anus.

The Therapeutic Effects of the Radiotherapy Plus TCM Treatment Observed in Senile Non-Parvicellular Lung Cancer Patients at the Late Stage

47 senile non-parvicellular lung cancer patients at stage Ⅲ or Ⅳ were randomly divided into a treatment group (26 cases) treated by radiotherapy plus traditional Chinese medicine (TCM) and a control group (21 cases) treated only by radiotherapy for observation of the therapeutic effects.The patients in the treatment group orally took Chinese medicine during and after the radiotherapy.There was no obvious difference in short-term therapeutic effects between the two groups,but the long-term curative effects in the treatment group was obviously superior to that in the control group (P<0.05 or P<0.01).Conclusion:radiotherapy plus TCM can prolong the survival period for senile non-parvicellular lung cancer patients.

The effect of adenovirus expressing wild-type p53 on 5-fluorouracil chemosensitivity is related to p53 status in pancreatic cancer cell lines

AIM:There are conflicting data about p53 function on cellular sensitivity to the cytotoxic action of 5-fluorouracil (5-FU). Therefore the objective of this study was to determine the combined effects of adenovirus-mediated wild-type (wt) p53 gene transfer and 5-FU chemotherapy on pancreatic cancer cells with different p53 gene status. METHODS:Human pancreatic cancer cell lines Capan-1^(p53mut), Capan-2^(p53wt),FAMPAC^(p53mut),PANC1^(p53mut),and rat pancreatic cancer cell lines AS^(p53wt) and DSL6A^(p53null) were used for in vitro studies.Following infection with different ratios of Ad- p53-particles (MOI) in combination with 5-FU,proliferation of tumor cells and apoptosis were quantified by cell proliferation assay (WST-1) and FACS (PI-staining).In addition,DSL6A syngeneic pancreatic tumor cells were inoculated subcutaneously in to Lewis rats for in vivo studies. Tumor size,apoptosis (TUNEL) and survival were determined. RESULTS:Ad-p53 gene transfer combined with 5-FU significantly inhibited tumor cell proliferation and substantially enhanced apoptosis in all four cell lines with an alteration in the p53 gene compared to those two cell lines containing wt-p53.In vivo experiments showed the most effective tumor regression in animals treated with Ad-p53 plus 5-FU.Both in vitro and in vivo analyses revealed that a sublethal dose of Ad-p53 augmented the apoptotic response induced by 5-FU. CONCLUSION:Our results suggest that Ad-p53 may synergistically enhance 5-FU-chemosensitivity most strikingly in pancreatic cancer cells lacking p53 function.These findings illustrate that the anticancer efficacy of this combination treatment is dependent on the p53 gene status of the target tumor cells.

Adeno-associated virus mediated endostatin gene therapy in combination with topoisomerase inhibitor effectively controls liver tumor in mouse model

AIM:rAAV mediated endostatin gene therapy has been examined as a new method for treating cancer.However, a sustained and high protein delivery is required to achieve the desired therapeutic effects.We evaluated the impact of topoisomerase inhibitors in rAAV delivered endostatin gene therapy in a liver tumor model. METHODS:rAAV containing endostatin expression cassettes were transduced into hepatoma cell lines.To test whether the topoisomerase inhibitor pretreatment increased the expression of endostatin,Western blotting and ELISA were performed.The biologic activity of endostatin was confirmed by endothelial cell proliferation and tube formation assays. The anti-tumor effects of the rAAV-endostatin vector combined with a topoisomerase inhibitor,etoposide,were evaluated in a mouse liver tumor model. RESULTS:Topoisomerase inhibitors,including camptothecin and etoposide,were found to increase the endostatin exPression level in vitro.The over-expressed endostatin, as a result of pretreatment with a topoisomerase inhibitor, was also biologically active.In animal experiments,the combined therapy of topoisomerase inhibitor,etoposide with the rAAV-endostatin vector had the best tumor- suppressive effect and tumor foci were barely observed in livers of the treated mice.Pretreatment with an etoposide increased the level of endostatin in the liver and serum of rAAV-endostatin treated mice.Finally,the mice treated With rAAV-endostatin in combination with etoposide showed the longest survival among the experimental models. CONCLUSION:rAAV delivered endostatin gene therapy in combination with a topoisomerase inhibitor pretreatment is an effective modality for anticancer gene therapy.

Clinical Observation on Treatment of NonParvicellular Carcinoma of the Lung with Jin Fu Kang Oral Liquid

Jin Fu Kang Oral Liquid ([symbol: see text]), made of traditional Chinese drugs for supplementing qi and nourishing yin, was developed according to the common symptoms in lung carcinoma with deficiency of both qi and yin. Of the 96 cases in the Jin Fu Kang group, 1 case got complete remission (CR) after treatment, 8 cases partial remission (PR), 52 cases no change (NC), PR + NC covering 63.5%. Of the 52 cases in the group of Jin Fu Kang plus chemotherapy, 11 cases got PR after treatment, 26 cases NC, PR + NC covering 71.2%. Of the 25 cases in the chemotherapy group, 4 cases got PR after treatment, 11 cases NC, PR + NC covering 60.0%. The results show that the therapeutic effectiveness in the Jin Fu Kang group and the group of Jin Fu Kang plus chemotherapy was better than that in the chemotherapy group. The one-year survival rate and the two-year survival rate after treatment in the Jin Fu Kang group were 67.3% and 67.3% respectively; 66.7% and 66.7% in the group of Jin Fu Kang plus chemotherapy; and 40.3% and 0.0% in the chemotherapy group. The improvement of clinical symptoms, increase of body weight and improvement of health situation (KPS marks) after treatment in both the Jin Fu Kang group and the group of Jin Fu Kang plus chemotherapy were better than that in the chemotherapy group. Some indicators of immunology and hemogram after treatment were greatly improved in the Jin Fu Kang group, worse in the chemotherapy group, but no obvious improvement in the group of Jin Fu Kang plus chemotherapy.

THE EFFECT OF HYPO－OSMOLAR SOLUTIONS WITH HIBITANE ON SHED CANCER CELLS IN PERITONEAL CAVITY OF PATIENTS WITH GASTRIC CANCER

For 100 patients with gastric cancer, intraoperative intraperitoneal perfusion(IOIPP)using double-distilled water(D.D.W)with hibitane 37℃ for 5 minutes was performed.The anticancer effects were assessed cytologically in pre-IOIPP and post-IOPP specimens of the abdominal effusion and/or lavaged peritoneal fluid.The radical gastrectomy was performed in 65 of 93 cases with advanced gastric cancer, shed cancer cells in peritoneal cavity were detected in 16 of 65 cases with pre-IOIPP(24.62%)and to 3 of post-IOIPP cases(4.62%).There was significant difference between the two groups(P<0.01) . Shed cancer cells were inactivated in vivo estimated by the trypan-blue staining technique in 7 cases with radical surgery.But the effect of the IOIPP on shed cancer calls was not significant in cases with peritoneal metastasis. Also there were shed cancer cells in peritoneal cavity of patients with SS cancer histologically before the IOIPP(15. 56%)and iatrogenic diffusion of cancer cells during operation(7/24)in thisarticle.The above results indicated that the IOIPP with hypo-osmolar solution containing hibitane, 37℃ for 5 min was indispensable and useful for the killing of peritoneal shed cancer cells in order to prevent postoperative peritoneal recurrence in patients with radical surgery of advanced gastric cancer regardless of conditions of serosal invasion.

卵巢成熟性囊性畸胎瘤恶性转化一例

卵巢成熟性囊性畸胎瘤(mature cystic teratoma of ovary,MCTO)是最常见的卵巢生殖细胞肿瘤,通常为良性,然而在极少数情况下,其可能发生恶性转化(malignant transformation,MT)。MT-MCTO多见于绝经后期女性,由于其罕见性,目前尚缺乏标准的诊治方案。报告1例77岁MT-MCTO为鳞状细胞癌ⅡB期患者的诊治过程,该患者在经肿瘤细胞减灭术后接受1个疗程博来霉素+依托泊苷+顺铂方案化疗。然而,由于患者身体情况无法耐受进一步治疗,随访术后半年死亡。

外阴棘层松解型鳞状细胞癌一例

棘层松解型鳞状细胞癌(acantholytic squamous cell carcinoma,ASCC)是鳞状细胞癌的一种少见的组织学特征变体,外阴ASCC是一个罕见的非典型部位的组织变异,常呈棘层溶解,具有独特的形态学特点,其具体发病机制及病因未明。由于发病率极低,妇科医生普遍对其认识不足,易造成漏诊和误诊。现报告1例79岁原发性外阴ASCC的病例资料,患者因自觉外阴瘙痒5年就诊,妇科检查发现左侧外阴8 cm×4 cm红肿溃疡伴部分白色变,病理活检示符合ASCC,经25次根治性放疗后,建议密切随诊,现放疗结束后3个月余,未见肿瘤复发和转移。国内外关于外阴ASCC的研究报道较少,通过报道该例老年女性外阴ASCC,并分析其临床特征、发病机制、发病因素、鉴别诊断、治疗及预后,以期为ASCC的临床诊疗提供参考。

基于患者源性口腔鳞状细胞癌类器官的药敏分析与初步临床应用

目的:基于所建立的患者源性口腔鳞状细胞癌类器官模型进行药物敏感性实验,对相应患者制定个性化药物治疗方案,观察其疗效与实验结果的匹配性。方法:本研究将通过活检或根治手术获得新鲜口腔鳞状细胞癌标本建立患者源性类器官模型,依托此模型对6种治疗口腔鳞状细胞癌药物(顺铂、紫杉醇、5-FU、西妥昔单抗、阿培利司、Nutlin-3)的敏感性进行测定,并对其中4例活检患者参考实验结果制定个性化用药方案,观察两个疗程后的近期治疗效果。结果:本研究成功建立了10例OSCC类器官(成功率10/12,83.3%),均可稳定传代、扩增达4代以上,且与亲本肿瘤组织表现出高度一致的组织病理学特征。口腔鳞状细胞癌类器官模型在药敏实验结果中表现出个体化差异,4例接受药物治疗的患者肿瘤控制结果均达到部分缓解标准,与实验结果一致。结论:本实验建立的患者源性口腔鳞状细胞癌类器官模型高度还原了同源亲本肿瘤的组织病理学特点,基于该模型的体外药敏实验与相应患者临床治疗反应一致,为建立个性化口腔鳞状细胞癌精准药物治疗新体系奠定基础。

靶向TROP-2的抗体药物偶联物在晚期非小细胞肺癌中的研究进展及展望

非小细胞肺癌(non-small cell lung cancer,NSCLC)仍是全球范围内的重大健康负担,患者亟待新的治疗选择。人滋养层细胞表面抗原2(trophoblast cell surface antigen-2,TROP-2)作为一种与NSCLC预后密切相关的靶点,已成为近年来的研究热点。其中,靶向TROP-2的抗体药物偶联物(antibody-drug conjugates,ADC)在NSCLC治疗领域取得了突破性进展。临床研究表明,部分TROP-2 ADC药物可显著改善既往经治的晚期/转移性NSCLC患者(无论是否伴有可靶向基因组改变)的无进展生存期,且在后线及一线治疗中均表现出可观的获益潜能。在药物安全性方面,尽管此类药物所引发的血液系统、呼吸系统和消化系统等各系统的不良反应大多可控,但仍需临床密切监测和及时管理。总之,TROP-2 ADC在NSCLC治疗领域具有广阔前景。

Hippo及Notch信号通路在眼睑基底细胞癌中的研究进展

眼睑基底细胞癌(BCC)是眼睑恶性肿瘤中最常见的类型。手术切除是治疗眼睑BCC的公认金标准,但对于局部晚期或转移性BCC,较大的手术风险和不良预后是困扰医患的最大问题,因此有必要探索新治疗方案。目前靶向治疗具有良好前景,但现有的靶向药物(Hedgehog信号通路抑制剂)面临难以完全清除肿瘤、毒性作用严重以及耐药的发生问题。鉴于以上情况,开发新的靶向药物对治疗该病具有重要意义。Hippo信号通路和Notch信号通路在眼睑BCC的发生和发展中起着重要作用,可能成为治疗的新靶点。因此,本文综述了Hippo信号通路和Notch信号通路在眼睑BCC中的研究进展,旨在为眼睑BCC的靶向治疗提供新的思路。

rAd-p53联合放化疗治疗晚期头颈部鳞状细胞癌

p53基因是迄今为止发现与人类肿瘤相关性最高的基因，在头颈部癌中，p53基因在喉癌、上颌窦癌、唾液腺癌、鼻咽癌等中均可见到阳性表达，而以复制缺陷型重组腺病毒为载体的p53基因替代疗法作为一种肿瘤治疗的新方法在头颈部鳞状细胞癌（鳞癌）中取得了很好的疗效，且临床应用安全。自2006年3月至2006年12月，我科应用重组人p53腺病毒（recombinant adenovirus—p53，rAd—p53，商品名为今又生）注射液对14例局部晚期或复发性头颈部鳞癌联合放化疗进行治疗，获得了较好的近期疗效，报道如下。

人增殖抑制基因(HSG)对肿瘤细胞系化疗敏感性的作用

目的:将人增殖抑制基因 (hHSG)用电子穿孔的转基因方式转染到体外培养的人肿瘤细胞系中,观察hHSG基因对内源性hHSG表达水平不同的肿瘤细胞系的化疗敏感性的影响。方法:首先用免疫组化方法检测不同组织来源的肿瘤细胞系中hHSG的表达水平,然后选择内源性hHSG表达水平较低的肺腺癌 (A549 )和内源性hHSG表达水平较高的宫颈癌(HeLaS3)细胞系,用电穿孔方法转染含有hHSG的真核表达载体 (pEGFP hHSG) 24h后,加入放线菌酮(CHX),采用细胞计数、MTT法观察hHSG对肿瘤细胞增殖抑制作用及对CHX的化疗敏感性的影响。结果:hHSG在不同组织来源的肿瘤细胞系都有不同程度的表达, pEGFP hHSG转染到两种内源性hHSG表达水平不同的肿瘤细胞系后,这两种肿瘤细胞的生长增殖都明显受到抑制,同时外源性的hHSG也增强了这些肿瘤细胞系对CHX的敏感性。结论:外源性hHSG可不依赖其内源性表达水平而抑制肿瘤细胞的增殖,与CHX并用可增强肿瘤细胞对CHX的敏感性,具有协同作用。

吉非替尼治疗局部晚期或转移性非小细胞肺癌在中国的临床研究

背景与目的:吉非替尼是一种有效的表皮生长因子受体酪氨酸激酶选择性抑制剂,国外已批准用于治疗局部晚期或转移性的非小细胞肺癌(non鄄smallcelllungcancer,NSCLC)。本项研究系吉非替尼治疗中国NSCLC的注册临床研究,旨在评估吉非替尼对既往化学治疗失败的局部晚期或转移性中国NSCLC患者的疗效和安全性。方法:159例经病理学确诊的NSCLC患者进入本研究。吉非替尼剂量为每次250mg,每天一次口服,直至肿瘤进展或出现不可耐受的不良事件。结果:全组客观有效率为27.0%,疾病控制率为54.1%,中位无进展生存时间97天,中位生存期10个月,1年生存率44%。最常见的药物相关不良事件为皮疹(44.0%)、皮肤瘙痒(15.7%)和腹泻(10.1%),大部分为Ⅰ～Ⅱ级,不需处理。结论:吉非替尼对既往化疗失败的中国局部晚期或转移性NSCLC患者有较好的疗效和安全性。

抑制X染色体连锁的凋亡抑制蛋白(XIAP)和Survivin表达对胰腺癌Panc-1细胞增殖及化疗敏感性的影响

目的:探讨同时抑制X染色体连锁的凋亡抑制蛋白(X-linked inhibitor of apoptosis protein,XIAP)和Sur-vivin表达,对胰腺癌Panc-1细胞增殖及吉西他滨(Gem)化疗敏感性的影响,并与单独抑制XIAP或Survivin表达的策略进行对比。方法:运用前期实验构建的XIAP-shRNA慢病毒(LV-X)和Survivin-shRNA慢病毒(LV-S),分别建立XIAP和/或Survivin表达稳定抑制的胰腺癌Panc-1细胞株,即Panc-1-X、Panc-1-S和Panc-1-XS。运用Real-timePCR和半定量Western blot分别检测XIAP和Survivin的mRNA和蛋白的表达情况,以细胞计数法及克隆形成实验检测细胞增殖能力,Caspase-3/7试剂盒及流式细胞仪检测细胞凋亡,MTT法检测细胞对Gem的化疗敏感性。结果:成功建立了XIAP和/或Survivin表达稳定抑制的胰腺癌细胞株Panc-1。XIAP和Survivin同时稳定抑制后,Panc-1的增殖能力显著受到抑制,Panc-1-XS组的克隆形成率为10.12%±1.33%,显著低于对照组Panc-1-XncSnc组(96.61%±7.89%)和Panc-1组(100.28%±8.97%,P<0.05)。用0.5 mg/L Gem处理24 h后,Panc-1-XS组的Caspase-3/7相对活性明显升高至15.02±0.57,显著高于Panc-1组与Panc-1-XncSnc组(分别为8.87±0.19和9.05±0.23,P<0.05);Panc-1-XS组的细胞凋亡率为24.09%±2.75%,显著高于对照组Panc-1-XncSnc及Panc-1组(分别为12.09%±1.97%和12.06%±1.22%,P<0.05)。Panc-1-XS组的IC50值为(0.47±0.04)mg/L,显著低于对照组Panc-1-XncSnc的(2.18±0.13)mg/L及Panc-1组的(2.13±0.18)mg/L(P<0.05),对Gem的化疗敏感性显著增强。进一步检测显示,Panc-1-XS组的IC50值为(0.47±0.04)mg/L,均显著低于Panc-1-X组的(0.76±0.07)mg/L和Panc-1-S组的(0.87±0.09)mg/L(P<0.05)。结论:同时稳定抑制胰腺癌细胞株Panc-1中XIAP和Survivin的表达,能显著抑制Panc-1细胞增殖能力,增强其Gem化疗敏感性,并明显优于XIAP或Survivin表达单独抑制的策略。

体外化疗药物敏感实验对指导原发性肝癌个体化疗的临床意义

背景与目的:肝细胞癌(肝癌)化学治疗效果差。为了提高化疗效果,本研究采用体外化疗敏感实验——三磷酸腺苷肿瘤化疗药物敏感实验(adenosinetriphosphatetumorchemosensitivityassay,ATP鄄TCA)系统评估化疗药物,并利用该系统指导肝癌患者临床个体化疗。方法:获取50个原发性肝癌手术标本,采用ATP鄄TCA系统评估5鄄氟尿嘧啶(5鄄fluorouracil,5鄄FU)、丝裂霉素(mitomycin,MMC)、顺铂(cisplatin,DDP)、草酸铂(oxaliplatin,OXA)、表阿霉素(epirubicin,EPI)、健择(gemcitabine,GEM)、伊立替康(irinotecan,CPT鄄11)、足叶乙甙(etoposide,VP鄄16)和泰素(paclitaxel,PTX)等化疗药物;23例肝癌患者术后接受ATP鄄TCA系统指导临床化疗,同时以20例接受手术及常规治疗的肝癌患者作为对照,观察162周临床疗效。结果:ATP鄄TCA系统结果可评估率为90.8%。肝癌细胞对各种化疗药物中鄄高度敏感率分别为:泰素46%、伊立替康44%、健择36%、丝裂霉素14%、表阿霉素12%、顺铂8%、足叶乙甙6%、草酸铂6%以及5鄄氟尿嘧啶4%;临床结果:临床研究观察终点ATP鄄TCA组与对照组比较,PR、CR、SD及观察期内患者死亡率两组之间无显著性差异;然而对照组有较高病情进展发生率(60.00%vs.13.04%,P=0.003);ATP鄄TCA组较对照组在总病情缓解率(60.86%vs.30.00%,P=0.043)、平均手术后总生存期(78.91周vs.27.21周,P=0.006)及手术后无疾病进展生存期(30.52周vs.4.78周,P=0.005)方面表现出明显优势。结论:ATP鄄TCA系统可以成功用于评估肝癌标本。泰素、伊立替康和健择有较高的体外抗肝癌活性。ATP鄄TCA系统指导肝癌个体化疗有可能提高患者无疾病进展生存期和总生存期。

东北菱提取物对肝癌细胞的体内外抑制作用

目的 :探索东北菱提取物对肝癌细胞体内外抑制作用。方法 :采用 3H- Td R掺入法分别测定东北菱醇提取物和水提取物对肝癌细胞的体外敏感性 ;对荷瘤小鼠进行体内实验 ,观察该提取物对肝癌细胞生长的抑制率。结果 :体外实验当剂量达 2 2 5 .0 0 g· L- 1 时 ,抑制率为 75 .4 9% ;体内实验抑瘤率为 6 0 %以上。结论 :东北菱不同溶剂提取物均具有抑制肝癌细胞的作用。