AIM: To determine the effect of metastatic hepatoma cells on lymphangioma-derived endothelium, and to establish in vitro model systems for assessing metastasis-related response of lymphatic endothelium.METHODS: Benign...AIM: To determine the effect of metastatic hepatoma cells on lymphangioma-derived endothelium, and to establish in vitro model systems for assessing metastasis-related response of lymphatic endothelium.METHODS: Benign lymphangioma, induced by intraperitoneal injection of the incomplete Freund's adjuvant in BALB/c mice, was embedded in fibrin gel or digested and then cultured in the conditioned medium derived from hepatoma H22. Ught and electron microscopy, and the b-answell migration assay were used to determine the effect of H22 on tissue or cell culture. Expressions of Fit-4, c-Fos, proliferating cell nuclear antigen (PCNA), and inducible nitric oxide synthase (iNOS) in cultured cells, and content of nitric oxide in culture medium were also examined.RESULTS: The embedded lymphangioma pieces gave rise to array of capillaries, while separated cells from lymphangioma grew to a cobblestone-like monolayer. H22 activated growth and migration of the capillaries and cells, induced expressions of Flt-4, c-Fos, PCNA and iNOS in cultured cells, and significantly increased the content of NO in the culture medium.CONCLUSION: Lymphangioma-derived cells keep the differentiated phenotypes of lymphatic endothelium, and the models established in this study are feasible for in vitro study of metastasis-related response of lymphatic endothelium.展开更多
BACKGROUND Jianpi-Huatan-Huoxue-Anshen formula[Tzu-Chi cancer-antagonizing&lifeprotecting II decoction(TCCL)]is a Chinese medical formula that has been clinically shown to reduce the gastrointestinal side effects ...BACKGROUND Jianpi-Huatan-Huoxue-Anshen formula[Tzu-Chi cancer-antagonizing&lifeprotecting II decoction(TCCL)]is a Chinese medical formula that has been clinically shown to reduce the gastrointestinal side effects of chemotherapy in cancer patients and improve their quality of life.However,its effect and mechanism on the intestinal microecology after chemotherapy are not yet clear.AIM To discover the potential mechanisms of TCCL on gastrointestinal inflammation and microecological imbalance in chemotherapy-treated mice transplanted with hepatocellular carcinoma(HCC).METHODS Ninety-six mice were inoculated subcutaneously with HCC cells.One week later,the mice received a large dose of 5-fluorouracil by intraperitoneal injection to establish a HCC chemotherapy model.Thirty-six mice were randomly selected before administration,and feces,ileal tissue,and ileal contents were collected from each mouse.The remaining mice were randomized into normal saline,continuous chemotherapy,Yangzheng Xiaoji capsulestreated,and three TCCL-treated groups.After treatment,feces,tumors,liver,spleen,thymus,stomach,jejunum,ileum,and colon tissues,and ileal contents were collected.Morphological changes,serum levels of IL-1β,IL-6,IL-8,IL-10,IL-22,TNF-α,and TGF-β,intestinal SIgA,and protein and mRNA expression of ZO-1,NF-κB,Occludin,MUC-2,Claudin-1,and IκB-αin colon tissues were documented.The effect of TCCL on the abundance and diversity of intestinal flora was analyzed using 16S rDNA sequencing.RESULTS TCCL treatment improved thymus and spleen weight,thymus and spleen indexes,and body weight,decreased tumor volumes and tumor tissue cell density,and alleviated injury to gastric,ileal,and colonic mucosal tissues.Among proteins and genes associated with inflammation,IL-10,TGF-β,SIgA,ZO-1,MUC-2,and Occludin were upregulated,whereas NF-κB,IL-1β,IL-6,TNF-α,IL-22,IL-8,and IκB-αwere downregulated.Additionally,TCCL increased the proportions of fecal Actinobacteria,AF12,Adlercreutzia,Clostridium,Coriobacteriaceae,and Paraprevotella in the intermediate stage of treatment,decreased the proportions of Mucipirillum,Odoribacter,RF32,YS2,and Rikenellaceae but increased the proportions of p_Deferribacteres and Lactobacillus at the end of treatment.Studies on ileal mucosal microbiota showed similar findings.Moreover,TCCL improved community richness,evenness,and the diversity of fecal and ileal mucosal flora.CONCLUSION TCCL relieves pathological changes in tumor tissue and chemotherapy-induced gastrointestinal injury,potentially by reducing the release of pro-inflammatory factors to repair the gastrointestinal mucosa,enhancing intestinal barrier function,and maintaining gastrointestinal microecological balance.Hence,TCCL is a very effective adjuvant to chemotherapy.展开更多
In regenerating liver of mice, marked increase of the activity of phosphotyrosyl protein phosphatase (PTPP) in cytosol was observed. The PTPP activity varied with time and reached the highest level between 24 to 48 ho...In regenerating liver of mice, marked increase of the activity of phosphotyrosyl protein phosphatase (PTPP) in cytosol was observed. The PTPP activity varied with time and reached the highest level between 24 to 48 hours after partial hepatectomy. In H22a cells the PTPP activity found in every subcellular fraction was lower than that of the normal liver. The PTPP activity was mostly concentrated in lysosomes of normal liver, but mainly distributed in nucleus, cytosol and microsome of regenerating liver. In H22a cells PTPP activity seemed distribute evenly. Five similar major PTPP peaks (I-V) were obtained on DEAE cellulose chromatography of cytosols from all three of liver cells studied. However, two additional PTPP peaks, a and b, were also obtained from cytosol of liver.展开更多
前期研究发现石见穿多糖(polysaccharides from Salvia chinensis Benth.,PSSC)能有效抑制H22肝癌细胞在昆明小鼠体内的生长。在此基础上,本研究进一步探讨了PSSC对H22荷瘤小鼠免疫器官和免疫细胞的影响。通过在昆明小鼠右腋皮下注射H2...前期研究发现石见穿多糖(polysaccharides from Salvia chinensis Benth.,PSSC)能有效抑制H22肝癌细胞在昆明小鼠体内的生长。在此基础上,本研究进一步探讨了PSSC对H22荷瘤小鼠免疫器官和免疫细胞的影响。通过在昆明小鼠右腋皮下注射H22肝癌细胞构建荷瘤小鼠模型。采用流式细胞术、免疫组织化学染色、酶联免疫法等实验方法评价PSSC对CD4+T细胞、CD8+T细胞、自然杀伤细胞(NK细胞)抗肿瘤免疫能力的影响。结果表明PSSC可以有效增加小鼠的脾脏/胸腺指数并促进Con A/LPS刺激的脾细胞增殖。同时,PSSC剂量依赖性地增加了荷瘤小鼠外周血单核细胞、脾脏及淋巴结中CD8+T细胞比例并提高CD8+T细胞与NK细胞在肿瘤组织中的组分含量。注射PSSC后,CD4+T细胞分泌免疫促进因子IFN-γ和IL-2的量增加,而分泌免疫抑制因子IL-4和IL-10的量减少。这一系列实验研究结果表明PSSC具有显著的抗肿瘤免疫增强活性。展开更多
目的探讨地鳖纤溶活性蛋白(fibrinolytic protein from Eupolyphaga sinensis Walker,EFP)对H22荷瘤小鼠的抑瘤功效。方法采用水提取法对地鳖进行成分分离;皮下接种肿瘤细胞建立荷瘤小鼠动物模型;灌胃和皮下注射法观察EFP的抑瘤作用;EL...目的探讨地鳖纤溶活性蛋白(fibrinolytic protein from Eupolyphaga sinensis Walker,EFP)对H22荷瘤小鼠的抑瘤功效。方法采用水提取法对地鳖进行成分分离;皮下接种肿瘤细胞建立荷瘤小鼠动物模型;灌胃和皮下注射法观察EFP的抑瘤作用;ELISA法检测血清抗H22抗体水平;记录各组体重变化、脾脏和胸腺等免疫器官的器官系数,检测肝脏丙二醛(MDA)水平、肝脏超氧化物歧化酶(SOD)活性、肝脏谷丙转氨酶(GPT)和谷草转氨酶(GOT)以及血清谷丙转氨酶(GPT)活力等生理生化指标。结果EFP具有明显的抑瘤活性。经EFP灌胃和皮下注射后的荷瘤小鼠,与对照组荷瘤小鼠相比其胸腺指数、脾指数明显增加;抗H22抗体水平以及MDA、SOD、GPT、GOT活性明显增加;肿瘤生长缓慢。结论EFP是地鳖抗肿瘤作用的主要有效成分,EFP在动物体内具有抗肿瘤作用,能通过增强荷瘤小鼠参与免疫抗体以及相关酶的活性而发挥抗肿瘤作用。展开更多
文摘AIM: To determine the effect of metastatic hepatoma cells on lymphangioma-derived endothelium, and to establish in vitro model systems for assessing metastasis-related response of lymphatic endothelium.METHODS: Benign lymphangioma, induced by intraperitoneal injection of the incomplete Freund's adjuvant in BALB/c mice, was embedded in fibrin gel or digested and then cultured in the conditioned medium derived from hepatoma H22. Ught and electron microscopy, and the b-answell migration assay were used to determine the effect of H22 on tissue or cell culture. Expressions of Fit-4, c-Fos, proliferating cell nuclear antigen (PCNA), and inducible nitric oxide synthase (iNOS) in cultured cells, and content of nitric oxide in culture medium were also examined.RESULTS: The embedded lymphangioma pieces gave rise to array of capillaries, while separated cells from lymphangioma grew to a cobblestone-like monolayer. H22 activated growth and migration of the capillaries and cells, induced expressions of Flt-4, c-Fos, PCNA and iNOS in cultured cells, and significantly increased the content of NO in the culture medium.CONCLUSION: Lymphangioma-derived cells keep the differentiated phenotypes of lymphatic endothelium, and the models established in this study are feasible for in vitro study of metastasis-related response of lymphatic endothelium.
基金Supported by Natural Science Foundation of Xiamen,China,No.3502Z20227171the Young Investigator Research Program of Xiang’an Hospital of Xiamen University,No.XAH23005+2 种基金the Traditional Chinese Medicine Foundation of Xiamen,No.XWZY-2023-0103Natural Science Foundation of Fujian,China,No.2018J01136National Natural Science Foundation of China,No.81202659.
文摘BACKGROUND Jianpi-Huatan-Huoxue-Anshen formula[Tzu-Chi cancer-antagonizing&lifeprotecting II decoction(TCCL)]is a Chinese medical formula that has been clinically shown to reduce the gastrointestinal side effects of chemotherapy in cancer patients and improve their quality of life.However,its effect and mechanism on the intestinal microecology after chemotherapy are not yet clear.AIM To discover the potential mechanisms of TCCL on gastrointestinal inflammation and microecological imbalance in chemotherapy-treated mice transplanted with hepatocellular carcinoma(HCC).METHODS Ninety-six mice were inoculated subcutaneously with HCC cells.One week later,the mice received a large dose of 5-fluorouracil by intraperitoneal injection to establish a HCC chemotherapy model.Thirty-six mice were randomly selected before administration,and feces,ileal tissue,and ileal contents were collected from each mouse.The remaining mice were randomized into normal saline,continuous chemotherapy,Yangzheng Xiaoji capsulestreated,and three TCCL-treated groups.After treatment,feces,tumors,liver,spleen,thymus,stomach,jejunum,ileum,and colon tissues,and ileal contents were collected.Morphological changes,serum levels of IL-1β,IL-6,IL-8,IL-10,IL-22,TNF-α,and TGF-β,intestinal SIgA,and protein and mRNA expression of ZO-1,NF-κB,Occludin,MUC-2,Claudin-1,and IκB-αin colon tissues were documented.The effect of TCCL on the abundance and diversity of intestinal flora was analyzed using 16S rDNA sequencing.RESULTS TCCL treatment improved thymus and spleen weight,thymus and spleen indexes,and body weight,decreased tumor volumes and tumor tissue cell density,and alleviated injury to gastric,ileal,and colonic mucosal tissues.Among proteins and genes associated with inflammation,IL-10,TGF-β,SIgA,ZO-1,MUC-2,and Occludin were upregulated,whereas NF-κB,IL-1β,IL-6,TNF-α,IL-22,IL-8,and IκB-αwere downregulated.Additionally,TCCL increased the proportions of fecal Actinobacteria,AF12,Adlercreutzia,Clostridium,Coriobacteriaceae,and Paraprevotella in the intermediate stage of treatment,decreased the proportions of Mucipirillum,Odoribacter,RF32,YS2,and Rikenellaceae but increased the proportions of p_Deferribacteres and Lactobacillus at the end of treatment.Studies on ileal mucosal microbiota showed similar findings.Moreover,TCCL improved community richness,evenness,and the diversity of fecal and ileal mucosal flora.CONCLUSION TCCL relieves pathological changes in tumor tissue and chemotherapy-induced gastrointestinal injury,potentially by reducing the release of pro-inflammatory factors to repair the gastrointestinal mucosa,enhancing intestinal barrier function,and maintaining gastrointestinal microecological balance.Hence,TCCL is a very effective adjuvant to chemotherapy.
文摘In regenerating liver of mice, marked increase of the activity of phosphotyrosyl protein phosphatase (PTPP) in cytosol was observed. The PTPP activity varied with time and reached the highest level between 24 to 48 hours after partial hepatectomy. In H22a cells the PTPP activity found in every subcellular fraction was lower than that of the normal liver. The PTPP activity was mostly concentrated in lysosomes of normal liver, but mainly distributed in nucleus, cytosol and microsome of regenerating liver. In H22a cells PTPP activity seemed distribute evenly. Five similar major PTPP peaks (I-V) were obtained on DEAE cellulose chromatography of cytosols from all three of liver cells studied. However, two additional PTPP peaks, a and b, were also obtained from cytosol of liver.
文摘前期研究发现石见穿多糖(polysaccharides from Salvia chinensis Benth.,PSSC)能有效抑制H22肝癌细胞在昆明小鼠体内的生长。在此基础上,本研究进一步探讨了PSSC对H22荷瘤小鼠免疫器官和免疫细胞的影响。通过在昆明小鼠右腋皮下注射H22肝癌细胞构建荷瘤小鼠模型。采用流式细胞术、免疫组织化学染色、酶联免疫法等实验方法评价PSSC对CD4+T细胞、CD8+T细胞、自然杀伤细胞(NK细胞)抗肿瘤免疫能力的影响。结果表明PSSC可以有效增加小鼠的脾脏/胸腺指数并促进Con A/LPS刺激的脾细胞增殖。同时,PSSC剂量依赖性地增加了荷瘤小鼠外周血单核细胞、脾脏及淋巴结中CD8+T细胞比例并提高CD8+T细胞与NK细胞在肿瘤组织中的组分含量。注射PSSC后,CD4+T细胞分泌免疫促进因子IFN-γ和IL-2的量增加,而分泌免疫抑制因子IL-4和IL-10的量减少。这一系列实验研究结果表明PSSC具有显著的抗肿瘤免疫增强活性。
文摘目的探讨地鳖纤溶活性蛋白(fibrinolytic protein from Eupolyphaga sinensis Walker,EFP)对H22荷瘤小鼠的抑瘤功效。方法采用水提取法对地鳖进行成分分离;皮下接种肿瘤细胞建立荷瘤小鼠动物模型;灌胃和皮下注射法观察EFP的抑瘤作用;ELISA法检测血清抗H22抗体水平;记录各组体重变化、脾脏和胸腺等免疫器官的器官系数,检测肝脏丙二醛(MDA)水平、肝脏超氧化物歧化酶(SOD)活性、肝脏谷丙转氨酶(GPT)和谷草转氨酶(GOT)以及血清谷丙转氨酶(GPT)活力等生理生化指标。结果EFP具有明显的抑瘤活性。经EFP灌胃和皮下注射后的荷瘤小鼠,与对照组荷瘤小鼠相比其胸腺指数、脾指数明显增加;抗H22抗体水平以及MDA、SOD、GPT、GOT活性明显增加;肿瘤生长缓慢。结论EFP是地鳖抗肿瘤作用的主要有效成分,EFP在动物体内具有抗肿瘤作用,能通过增强荷瘤小鼠参与免疫抗体以及相关酶的活性而发挥抗肿瘤作用。
