下调钙网蛋白表达对乳腺癌干细胞增殖、侵袭和凋亡的影响

目的探讨钙网蛋白(calreticulin,CRT)对乳腺癌干细胞增殖、侵袭和凋亡能力的影响。方法采用流式细胞分选技术从人乳腺癌细胞系MDA-MB-231中分离出乳腺癌干细胞。稳定转染重组质粒pGPU6/CRT(shRNA-CRT),Western blotting法检测乳腺癌干细胞CRT蛋白的表达,MTT法和transwell法分别检测pGPU6/CRT对乳腺癌干细胞增殖和侵袭能力的影响,AnnexinⅤ-FITC/PI双染法检测pGPU6/CRT对乳腺癌干细胞凋亡的影响。结果从MDA-MB-231细胞系中成功分选出乳腺癌干细胞;pGPU6/CRT转染乳腺癌干细胞后,CRT的表达水平显著降低;下调的CRT表达能够显著抑制乳腺癌干细胞增殖和侵袭能力,同时诱导乳腺癌干细胞凋亡。结论下调CRT能够抑制乳腺癌干细胞的增殖和侵袭能力,并促进干细胞凋亡。     

苦参碱对人结肠癌HT-29细胞增殖、凋亡与侵袭的作用及机制研究

目的探讨苦参碱(MAT)对人结肠癌HT-29细胞增殖、凋亡与侵袭的影响及机制。方法将人结肠癌HT-29细胞分为空白对照组与苦参碱组(0.125、0.25、0.5、1mg/L)。不同浓度MAT干预24、48、72h后,MTT方法检测苦参碱对HT-29细胞增殖的抑制作用。1mg/L MAT干预48 h后,流式细胞术检测HT-29细胞的凋亡率;Transwell侵袭实验检测苦参碱对HT-29细胞侵袭能力的抑制作用;Western blot实验检测苦参碱对HT-29细胞Bcl-2、Bax、MMP-2与MMP-9的表达。结果不同浓度苦参碱均能显著抑制HT-29细胞增殖,且呈时间和浓度依赖性。1mg/L MAT干预48 h后,HT-29细胞凋亡率升高;侵袭能力降低(P0.01);Bax、MMP-2与MMP-9蛋白表达水平升高,Bcl-2蛋白表达水平降低(P0.01)。结论苦参碱能够抑制人结肠癌HT-29细胞增殖与侵袭,并促进凋亡。     

miR-137对喉癌Hep-2细胞增殖、侵袭与凋亡的影响及可能机制

目的探讨miR-137对喉癌Hep-2细胞增殖及迁移能力的影响及可能机制。方法采用miR-137模拟物转染喉癌Hep-2细胞,实验分为空白对照组组(未进行转染)、miR-137阴性对照组(转染无关序列)、miR-137模拟物转染组(进行miR-137模拟物转染)。real-time PCR法验证转染效率,采用CCK8法检测miR-137对喉癌Hep-2细胞增殖的影响,采用Transwell实验检测转染后Hep-2细胞的侵袭能力变化,采用流式细胞术检测miR-137对Hep-2细胞凋亡的影响;Western blot检测转染后Hep-2细胞凋亡相关蛋白Bcl-2、Bax、caspase-3以及侵袭相关蛋白T细胞因子-4(TCF-4)蛋白表达的变化。结果与空白对照组或阴性对照组相比,miR-137模拟物转染组Hep-2细胞miR-137的表达水平显著高于对照组(P0.01),喉癌Hep-2细胞的增殖与侵袭能力显著降低,细胞凋亡率明显升高,凋亡相关蛋白Bcl-2表达水平降低,而Bax与caspase-3蛋白表达升高,侵袭相关蛋白TCF-4表达降低。结论过表达miR-137抑制Hep-2细胞增殖与侵袭、诱导细胞凋亡,与上调Bax、caspase-3蛋白表达和下调Bcl-2、TCF-4表达相关。     

miR-760对胃癌细胞系MGC-803增殖、迁移和侵袭的影响

目的探讨miR-760对胃癌细胞系MGC-803增殖、迁移和侵袭的影响。方法 Real-time PCR分析50例胃癌组织(C)及其癌旁(N)中miR-760的表达水平;用pc DNA3.1载体构建过表达miR-760的重组质粒(pc DNA-miR-760),实现miR-760在MGC-803细胞中的过表达;分别用CCK-8法、Transwell和划痕实验检测细胞增殖、侵袭和迁移能力。结果与癌旁对照组相比,36例(72%)胃癌组织中出现miR-760的表达下调;过表达miR-760能显著抑制MGC-803细胞的迁移和侵袭能力(P0.05),但对其增殖影响不大。结论 miR-760的表达下调可能与胃癌的进展有关,过表达miR-760可以抑制胃癌MGC-803细胞的迁移和侵袭。     

miR-27a对结肠癌SW480细胞增殖、迁移、侵袭及凋亡的影响及可能机制

目的 探讨miR-27a对结肠癌SW480细胞增殖、凋亡、侵袭及迁移的影响及可能机制。方法 qRT-PCR方法检测人结肠癌细胞株SW480与人正常结肠黏膜上皮细胞NCM460中miR-27a的表达水平。体外培养SW480细胞,将SW480细胞随机分为空白对照组(不进行任何处理)、miR-27a抑制剂组（转染miR-27a inhibitor）与阴性对照组（转染miR-27a inhibitor NC）,采用脂质体法进行转染,实时荧光定量PCR方法验证转染效率。采用四甲基偶氮唑蓝（MTT）法检测SW480细胞增殖;Transwell实验检测SW480细胞侵袭与迁移;流式细胞术检测SW480细胞凋亡;Western blot法检测转染后叉头框蛋白O1(FOXO1)、组织金属蛋白酶抑制剂2(TIMP-2)、泛素连接酶FBW7的表达。结果 miR-27a在SW480细胞中的表达水平显著高于NCM460细胞（P<0.01）。转染miR-27a抑制剂后,SW480细胞中miR-27a的表达水平明显降低,转染成功。抑制miR-27a表达后,SW480细胞的增殖、迁移与侵袭能力显著降低,凋亡率显...     

Gli2基因沉默对结肠癌细胞系SW480增殖、迁移和侵袭能力的影响

目的探讨胶质瘤相关癌基因同源蛋白2(Gli2)基因对结肠癌细胞系SW480增殖、迁移和侵袭能力的影响及相关机制。方法构建靶向Gli2基因的shRNA慢病毒载体,转染到SW480细胞中,用荧光显微镜观察绿色荧光蛋白的表达;实验设干扰组、阴性对照组和空白组。用MTT法、倍增时间与集落形成实验检测细胞的增殖能力;用Transwell小室法检测细胞的迁移、侵袭能力;利用qRT-PCR和Western blot法检测细胞间Gli2、cyclin D和MMP-2基因和蛋白的表达。结果SW480细胞转染慢病毒72 h后可见明显的绿色荧光蛋白表达,干扰组较阴性对照组与空白组Gli2表达降低,细胞增殖减慢,集落形成能力减弱,倍增时间延长,迁移、侵袭能力减弱,cyclin D1和MMP-2表达下降(P0.05)。结论沉默Gli2的表达能够抑制SW480细胞增殖、迁移、侵袭能力,机制可能与cyclin D1和MMP-2的下调有关。     

miR-379对胶质瘤U87MG细胞增殖、迁移和侵袭能力的影响

目的研究miR-379对胶质瘤U87MG细胞增殖、迁移和侵袭能力的影响。方法 Real-time PCR方法检测miR-379在胶质瘤U87MG细胞和正常星型胶质细胞中的表达水平。在胶质瘤U87MG细胞中瞬时转染miR-379 agomir并用real-time PCR方法验证其转染效率。CCK-8方法检测miR-379对胶质瘤U87MG细胞增殖能力的影响。划痕实验检测miR-379对胶质瘤U87MG细胞迁移能力的影响。Transwell侵袭实验检测miR-379对胶质瘤U87MG细胞侵袭能力的影响。结果 miR-379在胶质瘤U87MG细胞中的表达水平显著低于在正常星型胶质细胞中的表达。miR-379 agomir抑制胶质瘤U87MG细胞的增殖、迁移和侵袭能力。结论 miR-379抑制胶质瘤U87MG细胞的增殖、迁移和侵袭能力。     

miR-143-3p 靶向MAPK1对人结肠癌细胞增殖，凋亡和侵袭的调节作用#br#

目的　研究miR-143-3p靶向MAPK1与人结肠癌细胞增殖、凋亡和侵袭的关系。 方法　qRT-PCR检测miR-143-3p mimic转染效果和MAPK1的mRNA表达水平;双荧光素酶报告实验分析miR-143-3p与MAPK1的靶向关系;蛋白质印迹检测MAPK1的蛋白表达水平,CCK-8检测细胞增殖倍数,Hoechst染色检测细胞增殖,体外侵袭实验检测细胞侵袭,蛋白质印迹检测Ki67、VEGF、MMP-2和cleaved caspase-3的表达。 结果　miR-143-3p mimic抑制人结肠癌细胞SW620中MAPK1 mRNA和蛋白的表达水平;miR-143-3p mimic与MAPK1野生型报告载体共转后,荧光素酶的活性显著降低;miR-143-3p mimic转染SW620细胞后,细胞增殖、侵袭能力显著降低,凋亡细胞数目显著增加,Ki67、VEGF和MMP-2的表达水平显著降低,cl-caspase-3的表达水平显著上升;miR-143-3p mimic能缓解MAPK1高表达对SW620细胞增殖、侵袭的诱导作用和对细胞凋亡的抑制作用。 结论　miR-143-3p抑制人结肠癌细胞增殖和侵袭,诱导细胞凋亡,其作用机制与靶向抑制MAPK1有关。     

LncRNA TMPO-AS1通过调节miR-204-3p影响肺癌细胞的增殖、凋亡和侵袭

目的:探究长链非编码RNA(lncRNA)TMPO-AS1通过调节miR-204-3p的表达对肺癌细胞增殖、凋亡和侵袭的影响.方法:实时荧光定量PCR(qPCR)检测人肺癌细胞系A549、H1975、H1299和H1650和人正常支气管上皮细胞系HBE中TMPO-AS1的表达水平.采用脂质体转染技术沉默A549细胞中T...     

miR-186介导YAP1调控乳腺癌细胞增殖、迁移和侵袭

目的 探讨miR-186介导的YAP1对乳腺癌细胞增殖、迁移和侵袭的影响。方法 采用qRT-PCR和Western blot法检测miR-186、YAP1蛋白在正常乳腺细胞MDA-kb2及人乳腺癌细胞MDA-MB-231中的表达;利用Lipofectamine 2000试剂将miR-186 mimic转染至乳腺癌细胞,荧光显微镜下观察转染效率;采用CCK-8法检测乳腺癌细胞的增殖能力;细胞划痕实验检测细胞的迁移能力;Transwell细胞侵袭实验检测细胞的侵袭能力;Western blot法检测YAP1蛋白表达。双荧光素酶报告基因实验检测miR-186与YAP1的靶向关系。结果 与正常乳腺细胞相比,乳腺癌细胞中miR-186表达量显著减少(P<0.01),YAP1蛋白表达量显著增加(P<0.01)。与对照组相比,miR-186过表达可明显降低乳腺癌细胞的增殖、迁移和侵袭能力(P<0.05),同时降低了YAP1蛋白表达(P<0.01)。miR-186和野生型YAP1载体共转染细胞的荧光素酶活性显著降低(P<0.01)。结论 miR-186在乳腺癌细胞中表达下...     

洛伐他汀对胶质瘤干细胞增殖和凋亡的影响

BACKGROUND:Increasing evidence has shown that lovastatin with less toxicity to normal cells has crucial effects on proliferation, apoptosis and differentiation of various cancer cells. However, its roles in glioma stem cells remain unclear. OBJECTIVE:To explore the effect of lovastatin on proliferation and apoptosis of glioma stem cells. METHODS:Flow cytometric sorting was used to separate glioma stem cells from human glioblastoma cell line U87. Effects of lovastatin on the proliferation and apoptosis of glioma stem cells were determined by MTT and flow cytometry, respectively. Furthermore, expression levels of Ki67, Bax and Bcl-2 in glioma stem cells treated with lovastatin were detected using western blot analysis. RESULTS AND CONCLUSION:The CD133-positive glioma stem cells were sorted from human glioblastoma cell line U87 with a positive percentage of 85%. MTT assay showed that lovastatin inhibited the proliferation of glioma stem cells in dose (5, 10, 20 μmol/L)- and time (24, 48, 72, 96 hours)-dependent manners. Flow cytometry analysis showed that 10 μmol/L lovastatin (48 hours) induced apoptosis in glioma stem cells. In addition, the expression level of Ki67 was decreased by lovastatin treatment in a dose-dependent manner, and the Bcl-2 and Bax expression levels were reduced and increased by 10 μmol/L lovastatin treatment, respectively. In conclusion, lovastatin can inhibit cell proliferation and induce apoptosis of glioma stem cells, and lovastatin may be a potential drug for treatment of brain tumors.     

姜黄素通过ATK/FoxM1信号通路调控胃癌干细胞增殖及凋亡

BACKGROUND:Curcumin has crucial inhibitory effects on various cancer cells and cancer stem cells. However, its effect on gastric cancer stem cells and the underlying mechanism of this effect are unclear. OBJECTIVE:To explore the effect of curcumin on gastric cancer stem cells and the underlying mechanism. METHODS:Tumor sphere-forming assay and gastric cancer stem cell markers (EpCAM and CD44) were used to separate gastric cancer stem cells from gastric cancer SGC7901 cell lines. Effects of curcumin on the proliferation and apoptosis of gastric cancer stem cells were determined by MTT and flow cytometry analysis, respectively. Western blot analysis was used to detect the expression levels of FoxM1, p-AKT, and AKT. LY294002, an inhibitor of the PI3K/AKT pathway, was used to determine the regulatory relationship between AKT and FoxM1 signaling pathways. RESULTS AND CONCLUSION:The EpCAM+/CD44+ gastric cancer stem cells were successfully isolated from SGC7901 cells. MTT assay showed that curcumin inhibited the proliferation of gastric cancer stem cells, while flow cytometry analysis showed that curcumin induced apoptosis in gastric cancer stem cells. In addition, the expression levels of p-AKT and FoxM1 were decreased by curcumin treatment. After being treated by LY294002, the expression levels of p-AKT and FoxM1 were down-regulated markedly. In conclusion, curcumin can inhibit cell proliferation and induce apoptosis in gastric cancer stem cells via the ATK/FoxM1 signaling pathway.     

Noth2调控舌鳞癌干细胞的增殖、侵袭和迁移

BACKGROUND:Previous studies have found that the expression of Notch2 is up-regulated in tongue squamous cell carcinoma (TSCC) stem cells, but the effect of Notch2 on TSCC remains unclear. OBJECTIVE:To explore the effect of Notch2 on the proliferation, invasion and migration of TSCC stem cells (ALDH^br). METHODS:ALDHbr cells were enriched and separated by fluorescence-activated cell sorting technique from Tca8113 cells cultured in using serum-free medium, and Notch2 expression in ordinary TSCC cells (ALDH^low) and ALDH^br cells was detected by western blot. The ALDH^br cells transfected with Notch2 shRNA (sh-Notch2) by liposome served as experimental group, and ALDH^br cells transfected with sh-control were as control group. The effects of Notch2 on the proliferation, invasion and migration of ALDH^br cells were detected by cell counting kit-8 kit and Transwell assay, respectively. In addition, the expression levels of Ki67, matrix metalloproteinases 2 and 9 protein in Notch2-silenced ALDH^br cells and control cells were detected by western blot. RESULTS AND CONCLUSION:The expression level of Notch2 in ALDH^br cells was significantly higher than that in ALDH^low cells (P < 0.05). The ALDHbr cell proliferation ability and Ki67 protein expression in the experimental group were obviously lower than those in the control group (P < 0.05). The ALDH^br cell invasion and migration abilities in the experimental group were significantly lower than those in the control group (P < 0.05). The expression levels of matrix metalloproteinases 2 and 9 protein in the experimental group were obviously lower than those in the control group (P < 0.05). All these results show that Notch2 can promote the proliferation, invasion and migration of ALDH^br cells, which suggests that Notch2 plays an important role in the occurrence and development of TSCC, and it may be a potential molecular target for the treatment of TSCC.     

细胞因子诱导杀伤细胞分泌因子影响人肝癌干细胞的凋亡

BACKGROUND: Immunotherapy with autologous immune cells has been developed as a major adjuvant therapy for malignant tumors, but its mechanism of action has not been elucidated. OBJECTIVE: To investigate the relationship between cytokine-induced killer cell secretion and apoptosis in human liver cancer stem cells. METHODS: Human liver cancer stem cells, HepG2 cells, were isolated and enriched using serum-free suspension method. The peripheral blood mononuclear cells from patients with liver cancer were induced by γ-interferon, CD3 monoclonal antibody and recombinant human interleukin-2 to form killer cells. Passage 1 liver cancer stem cells were divided into control group (culture alone) and experimental group (co-culture of cytokines-induced killer cells and human liver cancer stem cells). At 48 hours after culture, apoptosis in human liver cancer stem cells was detected using flow cytometry, and expression of caspase-3 mRNA and protein was detected using RT-PCR and western blot, respectively. RESULTS AND CONCLUSION: The apoptotic rate in the control group was significantly lower than that in the experimental group (P < 0.05). The expressions of caspase-3 at mRNA and protein levels were both higher in the experimental group than the control group (P < 0.05). Experimental findings show that cytokines-induced killer cells can significantly promote apoptosis in human liver cancer stem cells, and up-regulate the caspase-3 mRNA and protein expressions dramatically.  中国组织工程研究杂志出版内容重点：干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程      

miR-34a通过Notch1信号通路对肺癌干细胞的抑制

BACKGROUND:It has been proved that miR-34a plays an inhibitory role in the growth of lung cancer stem cells, but the underlying mechanism remains unclear. OBJECTIVE:To explore the inhibitory effect of miR-34a on lung cancer stem cells and the underlying mechanism. METHODS:The CD133⁺ lung cancer stem cells were separated from lung cancer A549 cell lines using magnetic activated cell sorting method. And miR-34a-overexpressing CD133⁺ lung cancer stem cells were established by liposome transfection technology. Besides, the targeted relationship between miR-34a and Notch1 was analyzed by the dual-luciferase reporter. Afterwards, Notch1 silencing was performed by gene knockout, and its effect on lung cancer stem cells was determined. RESULTS AND CONCLUSION:After sorted and detected by immunomagetic selection and flow cytometry assay respectively, a high rate of CD133⁺ lung cancer stem cell was obtained. And qRT-PCR detected that the expression level of miR-34a in CD133⁺ lung cancer stem cells was significantly lower than that in CD133^- lung cancer stem cells. Moreover, miR-34a-overexpressing CD133⁺ lung cancer stem cells were successfully constructed and miR-34a significantly inhibited proliferation and induced apoptosis of lung cancer stem cells. Dual-luciferase reporter assay indicated that Notch1 mRNA was a target of miR-34a. In addition, Notch1 silencing obviously inhibited proliferation and induced apoptosis of lung cancer stem cells. These findings suggest that miR-34a can inhibite lung cancer stem cells via the Notch1 signaling pathway.     

心脏干细胞分离培养及其增殖与迁移的机制

文章快速阅读：文题释义： 干细胞niche：在心脏干细胞的自我更新、生长增殖、多向分化和持续存活等方面需要依赖特定的微环境,即干细胞niche。干细胞niche对干细胞的作用是通过多种因素起作用的,例如干细胞间的相互作用、干细胞与邻近分化细胞的相互作用、干细胞与细胞因子、生长因子及黏附因子的相互作用等,干细胞niche调控干细胞自我更新、多向分化是一个复杂的网络。 心肌重构：是由一系列复杂的分子和细胞机制导致心肌结构、功能和表型的变化,这些变化包括心肌细胞肥大、细胞凋亡、胚胎基因和蛋白质的再表达、心肌细胞外基质量和组成的变化。 摘要 背景：体外环境下进行心脏干细胞培养的过程中,生长微环境可能会对细胞的的增殖等产生一定的影响。 目的：在体外环境下培养大鼠心脏干细胞,探讨心脏干细胞增殖、迁移的可能机制。 方法：纳入SD大鼠10只,获得心肌组织块进行原代和传代培养。收集第3代心脏干细胞进行免疫荧光染色,进行干细胞鉴定,检测干细胞生长因子受体(c-kit)和CD45、CD90的表达。收集培养后的组织块,随机分为2 份,一份用多聚甲醛进行固定,常规石蜡包埋后切片,进行苏木精-伊红染色、Masson染色以及细胞凋亡检测;另一份在培养基中添加EdU标记增殖细胞,采用免疫荧光染色检测c-kit阳性细胞以及基质金属蛋白酶2,9及转化生长因子β1等表达。 结果与结论：①细胞鉴定结果：心肌组织培养7-10 d后有明亮的圆形细胞长出,细胞贴壁后呈梭状,生长、增殖能力旺盛。免疫荧光染色可观察到大量细胞呈c-kit、CD45阳性表达,CD90阴性表达;②细胞凋亡情况：培养的组织块切片后染色见大量新生细胞生长的同时伴随心肌细胞的凋亡;③免疫荧光染色结果：经EdU标记后阳性细胞分布于心肌间隙,基质金属蛋白酶2,9及转化生长因子β1少量表达,但周围心肌组织上述3因子表达明显增多。④结果表明,心肌组织体外培养可获取心脏干细胞,伴随细胞增殖和迁移,其机制与基质金属蛋白酶2,9及转化生长因子β1的表达有关。  中国组织工程研究杂志出版内容重点：干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程 ORCID: 0000-0002-7743-0450(侯波)     

人原代胃癌细胞中肿瘤干细胞的分化培养

BACKGROUND:There is a close relationship between tumor stem cells and tumor occurrence and recurrence, but there are still some disputes in the presence of tumor stem cells in all tumors. OBJECTIVE:To investigate the differentiation and culture of tumor stem cells in human primary gastric cancer cells. METHODS:Primary gastric cancer cells isolated from fresh gastric cancer tissues were stained with hematoxylin-eosin and identified by immunohistochemical detection of carcinoembryonic antigen. The CD44 expression of the cells was detected using immunofluorescence method. Magnetic activated cell sorting was used to isolate CD44⁺ gastric cancer cells that were then seeded subcutaneously behind the armpit of mice. Growth of implanted tumor cells was observed. RESULTS AND CONCLUSION:Human primary gastric cancer cells were isolated in serum-free medium. Compared with the routine culture group, the number of CD44⁺ cells (P < 0.05) and the tumor volume were significantly increased in the spheroid culture group. Furthermore, at 90 days after transplantation, the tumor volume of mice in spheroid culture group was significantly higher than that in the routine culture group. These experimental findings indicate that gastric cancer cells with certain tumorigenicity can be successfully isolated from gastric cancer cells using serum-free culture method and magnetic activated cell sorting method.     

胃癌干细胞对5-氟尿嘧啶的敏感性

背景：5-氟尿嘧啶是一种常用的胃癌化疗药物,但临床治疗过程中较易出现耐药现象,影响治疗效果。研究表明肿瘤干细胞对化疗药敏感性较低,可能是导致化疗耐药的重要原因。 目的：体外环境下分析胃癌干细胞对5-氟尿嘧啶的敏感性,了解胃癌化疗耐药相关机制。 方法：基于克隆形态的分选策略,从人胃癌AGS细胞系内分离胃癌干细胞克隆,采用免疫细胞化学染色分析不同克隆CD44和胸苷酸合成酶的表达,克隆形成实验评估不同类型克隆的自我更新能力,CCK-8法检测不同浓度5-氟尿嘧啶作用下人胃癌AGS细胞克隆生长抑制率。 结果与结论：人胃癌AGS细胞经低密度接种培养后,可形成32个不同形态的克隆,其中,副克隆、次克隆、全克隆所占比例分别为19%(6/32)、66%(21/32)、16%(5/32)。全克隆高表达CD44和胸苷酸合成酶,接种后可再次形成大量二代克隆;次克隆弱表达CD44和胸苷酸合成酶,接种后形成少量的二代克隆;副克隆不表达或弱表达CD44和胸苷酸合成酶,接种后未形成二代克隆。在不同浓度5-氟尿嘧啶的作用下,次克隆以及人胃癌AGS细胞的生长抑制率均显著高于全克隆(P均 < 0.05)。结果表明,在体外条件下,胃癌干细胞对5-氟尿嘧啶敏感性较低,推测其可能为临床化疗耐药的重要机制。中国组织工程研究杂志出版内容重点：干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程     

胃癌干细胞在胃癌侵袭、转移中及血管形成中的作用和机制

BACKGROUND: Although tumor stem cells and their differentiated vascular cells, which are not sensitive to chemotherapy and molecular targeted therapy, reduce overall blood supply of the tumor, these cells facilitate the invasion and metastasis of the tumor, eventually resulting in treatment failure.