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CD44 1

供体来源的CD19靶向T细胞输注 1

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微小残留病 1

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Separation of epigallocatechin-3-gallate from crude tea polyphenols by using Cellulose diacetate graft

Hong ZHU, Peiyong QIN

《化学科学与工程前沿（英文）》 2011年 第5卷 第3期   页码 330-338 doi: 10.1007/s11705-010-1104-6

摘要： This study demonstrates a new Cellulose diacetate graft -cyclodextrin (CDA- -CD) copolymer asymmetric membrane prepared by a phase inversion technique for the separation of (-)-epigallocatechin-3-gallate (EGCG) from other polyphenols in crude tea. The graft copolymer, CDA- -CD, was synthesized by prepolymerization of cellulose diacetate (CDA) and 1,6-hexamethylene-diisocyanate (HDI), which was then grafted with -cyclodextrin ( -CD). Surface and cross-section morphologies of the CDA- -CD membranes were analyzed by using scanning electron microscopy (SEM). Fourier transform infrared spectroscopy (FT-IR) indicated that the -CD was grafted onto the CDA by chemical bonding. The influences of the HDI/CDA mass ratio and the catalyst mass fraction on the -CD graft yield were investigated. The optimum conditions of a HDI/CDA mass ratio of 0.35 g·g and a catalyst mass fraction of 0.18 wt-% produced a -CD graft yield of 26.51 wt-%. The effects of the -CD graft yield and the concentration of the polymer cast solution on the separation of EGCG were also investigated. Under optimum conditions of a -CD graft yield of 24.21 wt-% and a polymer concentration of 13 wt-%, the purity of EGCG increased from 26.51 to 86.91 wt-%.

关键词： (-)-epigallocatechin-3-gallate (EGCG)     tea polyphenols     CDA-β-CD    

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Preclinical characterization and comparison between CD3/CD19 bispecific and novel CD3/CD19/CD20 trispecific

《医学前沿（英文）》 2022年 第16卷 第1期   页码 139-149 doi: 10.1007/s11684-021-0835-8

摘要： The CD19-targeting bispecific T-cell engager blinatumomab has shown remarkable efficacy in patients with relapsed/refractory B-cell precursor acute lymphoblastic leukemia. However, several studies showed that blinatumomab has a short plasma half-life due to its low molecular weight, and thus its clinical use is limited. Furthermore, multiple trials have shown that approximately 30% of blinatumomab-relapsed cases are characterized by CD19 negative leukemic cells. Here, we design and characterize two novel antibodies, A-319 and A-2019. Blinatumomab and A-319 are CD3/CD19 bispecific antibodies with different molecular sizes and structures, and A-2019 is a novel CD3/CD19/CD20 trispecific antibody with an additional anti-CD20 function. Our in vitro, ex vivo, and in vivo experiments demonstrated that A-319 and A-2019 are potent antitumor agents and capable of recruiting CD3 positive T cells, enhancing T-cell function, mediating B-cell depletion, and eventually inhibiting tumor growth in Raji xenograft models. The two molecules are complementary in terms of efficacy and specificity profile. The activity of A-319 demonstrated superior to that of A-2019, whereas A-2019 has an additional capability to target CD20 in cells missing CD19, suggesting its potential function against CD19 weak or negative CD20 positive leukemic cells.

关键词： B-cell acute lymphoblastic leukemia     bispecific antibody     trispecific antibody     CD19     CD20    

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Clinical significance of CD34+CD117dim/CD34+CD117bri myeloblast-associated

Xueping Li, Yuting Dai, Bing Chen, Jinyan Huang, Saijuan Chen, Lu Jiang

《医学前沿（英文）》 2021年 第15卷 第4期   页码 608-620 doi: 10.1007/s11684-021-0836-7

摘要： t(8;21)(q22;q22) acute myeloid leukemia (AML) is a highly heterogeneous hematological malignancy with a high relapse rate in China. Two leukemic myeloblast populations (CD34 CD117 and CD34 CD117 ) were previously identified in t(8;21) AML, and CD34 CD117 cell proportion was determined as an independent factor for this disease outcome. Here, we examined the impact of CD34 CD117 /CD34 CD117 myeloblast-associated gene expression on t(8;21) AML clinical prognosis. In this study, 85 patients with t(8;21) AML were enrolled. The mRNA expression levels of CD34 CD117 -associated genes ( , , and ) and CD34 CD117 -associated genes ( , , and ) were measured using quantitative reverse transcription PCR. Associations between gene expression and clinical outcomes were determined using Cox regression models. Results showed that patients with high , , or expression had significantly inferior overall survival (OS), whereas those with high or expression showed relatively favorable prognosis. Univariate analysis revealed that CD19, CD34 CD117 proportion, mutation, minimal residual disease (MRD), and expression levels of , , , and were associated with OS. Multivariate analysis indicated that mutation, MRD and and expression levels were independent prognostic variables for OS. Identifying the clinical relevance of CD34 CD117 /CD34 CD117 myeloblast-associated gene expression may provide new clinically prognostic markers for t(8;21) AML.

关键词： t(8     21)(q22     q22) AML     CD34+CD117dim/ CD34+CD117bri cell population     gene expression     prognosis    

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Comparisons in subcellular and biochemical behaviors of cadmium between low-Cd and high-Cd accumulation

Meng XUE, Yihui ZHOU, Zhongyi YANG, Biyun LIN, Jiangang YUAN, Shanshan WU

《环境科学与工程前沿（英文）》 2014年 第8卷 第2期   页码 226-238 doi: 10.1007/s11783-013-0582-4

摘要： Subcellular distributions and chemical forms of cadmium (Cd) in the leaves, stems and roots were investigated in low-Cd accumulation cultivars and high-Cd accumulation cultivars of pakchoi ( L.). Root cell wall played a key role in limiting soil Cd from entering the protoplast, especially in the low-Cd cultivars. The high-Cd cultivars had significantly higher leaf and stem Cd concentrations than the low-Cd cultivars in cell wall fraction, chloroplast/trophoplast fraction, organelle fraction and soluble fraction. In low-Cd cultivars, which were more sensitive and thus had greater physiological needs of Cd detoxification than high-Cd cultivars, leaf vacuole sequestrated higher proportions of Cd. Cd in the form of pectate/protein complexes (extracted by 1 mol·L NaCl) played a decisive role in Cd translocation from root to shoot, which might be one of the mechanisms that led to the differences in shoot Cd accumulation between the two types of cultivars. Furthermore, the formation of Cd-phosphate complexes (extracted by 2% HAc) was also involved in Cd detoxification within the roots of pakchoi under high Cd stress, suggesting that the mechanisms of Cd detoxification might be different between low- and high-Cd cultivars.

关键词： cadmium (Cd)     low-Cd cultivar     pakchoi (Brassica chinensis L.)     subcellular distribution     chemical forms    

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Cultivars and oil extraction techniques affect Cd/Pb contents and health risks in oil of rapeseed grownon Cd/Pb-contaminated farmland

《环境科学与工程前沿（英文）》 2023年 第17卷 第7期 doi: 10.1007/s11783-023-1687-z

摘要：

● Organic solvent extracted fewer Cd/Pb in rapeseed oil than physical pressing.

关键词： Rapeseed oil     Oil extraction technologies     Human health risk assessment     Cd/Pb-contaminated farmland     Substitute planting    

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Celecoxib in combination with retinoid CD437 inhibits melanoma A375 cell

Jianwen REN, Zhenhui PENG, Birong GUO, Min PAN

《医学前沿（英文）》 2009年 第3卷 第1期   页码 108-112 doi: 10.1007/s11684-009-0015-8

摘要： This study aimed to investigate the effects of celecoxib, synthetic retinoid 6-[3-(1-adamantyl)-4-hydroxyphenyl]-2-naphthalenecarboxylic acid (CD437) and the combination of the two on cell proliferation, apoptosis, and cycle arrest of human malignant melanoma A375 cells. 3-(4,5-dimethylthiazol-2-yl)-2,5-di-phenyltetrazoliumbromide assay (MTT assay) was applied to determine the anti-proliferative effects of the drugs on human malignant melanoma A375 cells. Flow cytometry was performed to investigate the influence of the drugs on cell cycle and cell apoptosis. Both celecoxib and CD437 could inhibit the growth of human malignant melanoma A375 cells in a dose-dependent manner. Celecoxib at 80 μmol/L inhibited proliferation, induced apoptosis and G /M cell cycle arrest of human malignant melanoma A375 cells after treatment for 24 h [proliferation inhibiting rate: (50.2±2.51)%, apoptosis rate: (35.91±1.80)%]. CD437 at 10 μmol/L inhibited proliferation, induced apoptosis and G /G cell cycle arrest of human malignant melanoma A375 cells after treatment for 24 h [proliferation inhibiting rate: (58.6±2.38)%, apoptosis rate: (28.03±0.77)%]. Celecoxib in combination with CD437 could significantly enhance the effects of inhibiting proliferation and inducing apoptosis of human malignant melanoma A375 cells 24 h after treatment compared with the drug alone [proliferation inhibiting rate: (68.92±1.72)%, apoptosis rate: (42.09±1.05)%, both <0.05] and could decrease the proportion of the S phase in the cell cycle. Celecoxib could inhibit the growth of human malignant melanoma A375 cells by inducing apoptosis and G /M cycle arrest. CD437 could inhibit the growth of human malignant melanoma A375 cells by inducing apoptosis and G /G cycle arrest. Celecoxib exhibited additive effects with CD437 on retarding the growth and inducing apoptosis of human malignant melanoma A375 cells. Celecoxib in combination with CD437 may become an effective method for prevention and treatment of human melanoma.

关键词： celecoxib     CD437     melanoma A375 cell     apoptosis     cycle arrest    

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Growth responses of the newly-discovered Cd-hyperaccumulator Rorippa globosa and its accumulation characteristicsof Cd and As under joint stress of Cd and As

SUN Yuebing, ZHOU Qixing, WEI Shuhe, REN Liping

《环境科学与工程前沿（英文）》 2007年 第1卷 第1期   页码 107-113 doi: 10.1007/s11783-007-0020-6

摘要： has been identified as a newly-found Cd-hyperaccumulating species. In the present study, growth responses of and its accumulation characteristics of Cd and As were examined under joint stress of Cd and As. The results showed that Cd and As had an antagonistic effect on enhancing the growth of plants and Cd uptake and accumulation under the low concentration Cd and As treatments. When the concentration of Cd in the soil was 10 mg/kg and the concentration of As was 50 mg/kg, the highest growing height of the plant was up to 35.9 cm and the dry weight of the shoots was up to 2.2 g/pot, respectively. Meanwhile, the accumulation of Cd in the leaves under the joint stress was higher than that at the same level under single Cd pollution. However, there were synergic adverse effects on plant growth and Cd uptake under the combined pollution from a high concentration of Cd and As. Meanwhile, the accumulation of As in the roots was greater than that in the shoots, the translocation factor (TF) was "d0.3 and the bioaccumulation factor (BF) was "d0.6, thus showing that had an excluding effect on As uptake. These results confirmed that had a strong tolerant ability to the joint stress of Cd and As, and the potential for phytoremediation of soils contaminated by Cd and As.

关键词： synergic adverse     stress     present study     potential     weight    

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Tumor-derived exosomes induce initial activation by exosomal CD19 antigen but impair the function ofCD19-specific CAR T-cells via TGF-β signaling

《医学前沿（英文）》 doi: 10.1007/s11684-023-1010-1

摘要： Tumor-derived exosomes induce initial activation by exosomal CD19 antigen but impair the function of CD19-specific CAR T-cells via TGF-β signaling

关键词： exosomes induce activation     impair function CD19     exosomal CD19 antigen    

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Changes of phenotype and function of human CD4 CD25 T cells induced by transfection of Foxp3

WU Kui, BI Yutian, WANG Yaoli, WANG Changzheng

《医学前沿（英文）》 2008年 第2卷 第4期   页码 366-369 doi: 10.1007/s11684-008-0070-6

摘要： The aim of this paper is to explore the effects of transfection of Foxp3 gene on the phenotype and function of naive CD4 T cells. The pMSCV-Foxp3 retroviral vector encoding Foxp3 gene was transduced into the PT67 packaging cell line. Virus-containing supernatant was applied to differentiate CD4CD25 T cells. The resulting cells were sorted with flow cytometry. The expressions of CD25, CD127, CTLA-4 and the proliferation of transfected T cells were examined. The effect of transfected CD4 T cells on the proliferation and cytokine production of CD4CD25 T cells was examined. Foxp3-gene transfected CD4 T cells could express Foxp3 and transfection of Foxp3 gene up-regulated the expressions of CD25 and CTLA-4, but down-regulated CD127 expression. After transfection, the proliferation of CD4 T cells was eliminated. Transfected T cells inhibited the proliferation of CD4CD25 T cells. CD4CD25 T cells acquired a regulatory phenotype and function after it was transduced with the Foxp3 gene. This suggested a key role of Foxp3 in the generation of CD4CD25 regulatory T cells.
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CD47 blockade improves the therapeutic effect of osimertinib in non-small cell lung cancer

《医学前沿（英文）》 2023年 第17卷 第1期   页码 105-118 doi: 10.1007/s11684-022-0934-1

摘要： The third-generation epidermal growth factor receptor (EGFR) inhibitor osimertinib (OSI) has been approved as the first-line treatment for EGFR-mutant non-small cell lung cancer (NSCLC). This study aims to explore a rational combination strategy for enhancing the OSI efficacy. In this study, OSI induced higher CD47 expression, an important anti-phagocytic immune checkpoint, via the NF-κB pathway in EGFR-mutant NSCLC HCC827 and NCI-H1975 cells. The combination treatment of OSI and the anti-CD47 antibody exhibited dramatically increasing phagocytosis in HCC827 and NCI-H1975 cells, which highly relied on the antibody-dependent cellular phagocytosis effect. Consistently, the enhanced phagocytosis index from combination treatment was reversed in CD47 knockout HCC827 cells. Meanwhile, combining the anti-CD47 antibody significantly augmented the anticancer effect of OSI in HCC827 xenograft mice model. Notably, OSI induced the surface exposure of “eat me” signal calreticulin and reduced the expression of immune-inhibitory receptor PD-L1 in cancer cells, which might contribute to the increased phagocytosis on cancer cells pretreated with OSI. In summary, these findings suggest the multidimensional regulation by OSI and encourage the further exploration of combining anti-CD47 antibody with OSI as a new strategy to enhance the anticancer efficacy in EGFR-mutant NSCLC with CD47 activation induced by OSI.

关键词： osimertinib     anti-CD47 antibody     combination strategy     ADCP     EGFR    

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Response of indigenous Cd-tolerant electrochemically active bacteria in MECs toward exotic Cr(VI) based

Xia Hou, Liping Huang, Peng Zhou, Hua Xue, Ning Li

《环境科学与工程前沿（英文）》 2018年 第12卷 第4期 doi: 10.1007/s11783-018-1057-4

摘要：

Cell membrane of indigenous Cd-tolerant EAB harbored more cadmium than chromium.

Indigenous Cd-tolerant EAB cytoplasm located more chromium than cadmium.

Simultaneously quantitatively imaging Cd(II) and Cr(III) ions in EAB was achieved.

Current accelerated the harboring of cadmium in EAB at an initial 2 h.

Current directed the accumulation of more chromium in EAB over time.

关键词： Microbial electrolysis cell     Electrochemically active bacteria     Cd-tolerant bacteria     Cd(II) and Cr(VI)     Fluorescence probe    

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Downregulation effects of beta-elemene on the levels of plasma endotoxin, serum TNF-alpha, and hepatic CD14

null

《医学前沿（英文）》 2011年 第5卷 第1期   页码 101-105 doi: 10.1007/s11684-011-0111-4

摘要：

It has been demonstrated that β-elemene could protect against carbon tetrachloride (CCl4)-induced liver fibrosis in our laboratory work, and the aim of this paper is to reveal the protective mechanisms of β-elemene. The hepatic fibrosis experimental model was induced by the hypodermical injection of CCl4 in Wistar male rats. β-elemene was intraperitoneally administered into rats for 8 weeks (0.1 mL/100 g bodyweight per day), and plasma endotoxin content was assayed by biochemistry. The serum TNF-α level was detected using radioactive immunity. CD14 expression in rat livers was measured by immunohistochemistry and Western blot. The results showed that β-elemene can downregulate the levels of plasma endotoxins, serum TNF-α, and hepatic CD14 expression in rats with liver fibrosis. β-elemene plays an important role in downregulating the lipopolysaccharide signal transduction pathway, a significant pathway in hepatic fibrosis development.

关键词： liver fibrosis     beta-elemene     endotoxin     CD14    

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Biological features of intrahepatic CD4+CD25+ T cells in the naturally tolerance of rat liver transplantation

LU Ling, ZHANG Feng, PU Liyong, YAO Aihua, YU Yue, SUN Beicheng, LI Guoqiang, WANG Xuehao

《医学前沿（英文）》 2007年 第1卷 第4期   页码 373-376 doi: 10.1007/s11684-007-0072-9

摘要： The biological features of intrahepatic CD4CD25 T regulatory cells in the naturally tolerance of rat liver transplantation were explored. Orthotopic liver transplantation was performed in two allogeneic rat strain combinations, one with fatal immunosuppression despite a complete major histo compatibility complex mismatch. The subjects were divided into three groups according to different donors and recipients [Tolerance group: LEW-to-DA; Rejection group: DA-to-LEW; Syngegnic group (control group): DA-to-DA]. The proportion of intrahepatic CD4CD25 T cells from three groups was determined by flow cytometry (FCM) in different time. The intrahepaitc CD4CD25 T cells were isolated by magnetic activated cell sorting (MACS) method and iden tified by FCM. The Foxp3 mRNA was detected by reverse transcriptase polymerase chain reaction (RT-PCR). And their suppression on the proliferation of CD4CD25 T effector cells was analyzed by cell proliferation assay . Beginning immediately after transplantation, the proportion of Treg cells increased over time in both allogeneic groups but was significantly greater in the Rejection group. The proportion of Treg cells declined after day 5, and such reduction was more dramatic in the Rejection group than in the Tolerance group. Animals in the Tolerance group showed a second increase in the proportion after day 14. Intrahepatic CD4CD25 T cells isolated from spontaneous tolerance models inhibited the proliferation of mixed lymphocyte reaction. The purity of CD4CD25 T cells sorted by MACS was 86%–93%. The CD4CD25 T cells could specifically express the Foxp3 gene compared with CD4CD25 T cells. , the spleen cells from LEW rats can irritate the proliferation of CD4CD25 T cells more obviously than the syngegnic spleen cells. CD4CD25 Tr cells could suppress the proliferation of CD4CD25 T cells, but the inhibition was reversed by exogenous IL-2 (200 U/mL). The CD4CD25 T regulatory cells specifically express the Foxp3 gene, which may play an important role in the induction of liver transplantation tolerance by suppressing the reaction of effective T cells.

关键词： magnetic     LEW-to-DA     effector     MACS     cytometry    

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外泌体CD44与整合素α6β4结合激活宿主细胞重塑肿瘤微环境促进胰腺癌恶性转移 Article

牟为, 许亚婕, 顾鹏飞, 王文斌, 李井泉, 葛阳, 王慧

《工程（英文）》 2021年 第7卷 第10期   页码 1415-1425 doi: 10.1016/j.eng.2020.08.013

摘要： 我们的研究发现，由外泌体传递的跨膜糖蛋白CD44通过重编程肿瘤微环境，参与了胰腺癌的转移过程。CD44与整合素α6β4相互作用形成复合物，激活细胞内骨架蛋白及其信号通路，进而调控Src和Ras信号级联反应，促进肿瘤细胞的运动。值得注意的是，我们还证明了CD44-α6β4复合物可以通过外泌体的旁分泌作用传递到靶区。肝细胞选择性摄取具有高表达CD44的肿瘤外泌体，并通过刺激细胞因子、促炎因子和生长因子产生转移前生态位，最终支持肿瘤转移。我们的研究结果表明，外泌体CD44有可能作为胰腺癌临床诊断和治疗的生物标志物。

关键词： 胰腺癌     靶向器官转移     外泌体     细胞间交流     CD44    

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Effects of organic acids on Cd adsorption and desorption by two anthropic soils

Jingui WANG, Jialong LV, Yaolong FU

《环境科学与工程前沿（英文）》 2013年 第7卷 第1期   页码 19-30 doi: 10.1007/s11783-012-0424-9

摘要： The objective of this experiment was to study the effects of malic, tartaric, oxalic, and citric acid on the adsorption and desorption characteristics of Cd by two typical anthropic soils (lou soil and irrigation-silted soil) in North-west China. Cadmium adsorption and desorption were studied under a range of temperatures (25°C, 30°C, 35°C, 40°C), organic acid concentrations (0.5–5.0 mmol·L ), and pH values (2–8). The results showed that the Cd adsorption capacity of the lou soil was significantly greater than that of the irrigation-silted soil. Generally, Cd adsorption increased as the temperature increased. In the presence of NaNO , the adsorption of Cd was endothermic with Δ values of 31.365 kJ·mol for lou soil and 28.278?kJ·mol for irrigation-silted soil. The endothermic reaction indicated that H bonds were the main driving force for Cd adsorption in both soils. However, different concentrations of organic acids showed various influences on the two soils. In the presence of citric acid, chemical adsorption and van der Waals interactions were the main driving forces for Cd adsorption rather than H bonds. Although the types of organic acids and soil properties were different, the effects of the organic acids on the adsorption and desorption of Cd were similar in the two soils. The adsorption percentage of Cd generally decreased as organic acid concentrations increased. In contrast, the adsorption percentage increased as the pH of the initial solution increased. The exception was that adsorption percentage of Cd increased slightly as oxalic acid concentrations increased. In contrast, the desorption percentage of Cd increased with increasing concentrations of organic acids but decreased as the initial solution pH increased.

关键词： adsorption     desorption     cadmium     organic acids     temperature     anthropic soil    

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标题 作者 时间 类型 操作

Separation of epigallocatechin-3-gallate from crude tea polyphenols by using Cellulose diacetate graft

Hong ZHU, Peiyong QIN

期刊论文

Preclinical characterization and comparison between CD3/CD19 bispecific and novel CD3/CD19/CD20 trispecific

期刊论文

Clinical significance of CD34+CD117dim/CD34+CD117bri myeloblast-associated

Xueping Li, Yuting Dai, Bing Chen, Jinyan Huang, Saijuan Chen, Lu Jiang

期刊论文

Comparisons in subcellular and biochemical behaviors of cadmium between low-Cd and high-Cd accumulation

Meng XUE, Yihui ZHOU, Zhongyi YANG, Biyun LIN, Jiangang YUAN, Shanshan WU

期刊论文

Cultivars and oil extraction techniques affect Cd/Pb contents and health risks in oil of rapeseed grownon Cd/Pb-contaminated farmland

期刊论文

Celecoxib in combination with retinoid CD437 inhibits melanoma A375 cell

Jianwen REN, Zhenhui PENG, Birong GUO, Min PAN

期刊论文

Growth responses of the newly-discovered Cd-hyperaccumulator Rorippa globosa and its accumulation characteristicsof Cd and As under joint stress of Cd and As

SUN Yuebing, ZHOU Qixing, WEI Shuhe, REN Liping

期刊论文

Tumor-derived exosomes induce initial activation by exosomal CD19 antigen but impair the function ofCD19-specific CAR T-cells via TGF-β signaling

期刊论文

Changes of phenotype and function of human CD4 CD25 T cells induced by transfection of Foxp3

WU Kui, BI Yutian, WANG Yaoli, WANG Changzheng

期刊论文

CD47 blockade improves the therapeutic effect of osimertinib in non-small cell lung cancer

期刊论文

Response of indigenous Cd-tolerant electrochemically active bacteria in MECs toward exotic Cr(VI) based

Xia Hou, Liping Huang, Peng Zhou, Hua Xue, Ning Li

期刊论文

Downregulation effects of beta-elemene on the levels of plasma endotoxin, serum TNF-alpha, and hepatic CD14

null

期刊论文

Biological features of intrahepatic CD4+CD25+ T cells in the naturally tolerance of rat liver transplantation

LU Ling, ZHANG Feng, PU Liyong, YAO Aihua, YU Yue, SUN Beicheng, LI Guoqiang, WANG Xuehao

期刊论文

外泌体CD44与整合素α6β4结合激活宿主细胞重塑肿瘤微环境促进胰腺癌恶性转移

牟为, 许亚婕, 顾鹏飞, 王文斌, 李井泉, 葛阳, 王慧

期刊论文

Effects of organic acids on Cd adsorption and desorption by two anthropic soils

Jingui WANG, Jialong LV, Yaolong FU

期刊论文