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  1. Article ; Online: Generation of a human embryonic stem cell line WAe009-A-79 carrying a long QT syndrome mutation in KCNQ1.

    Wang, Hongyue / Guo, Tianwei / Lan, Feng

    Stem cell research

    2023  Volume 70, Page(s) 103119

    Abstract: The voltage-gated potassium channel KvLQT1 encoded by KCNQ1 plays an important role in the repolarization of myocardial action potentials. KCNQ1 mutations can cause Long QT syndrome type 1 (LQT1), which is considered to be the most common causative gene ... ...

    Abstract The voltage-gated potassium channel KvLQT1 encoded by KCNQ1 plays an important role in the repolarization of myocardial action potentials. KCNQ1 mutations can cause Long QT syndrome type 1 (LQT1), which is considered to be the most common causative gene of LQT. In this study, we established a human embryonic stem cell line KCNQ1
    MeSH term(s) Humans ; KCNQ1 Potassium Channel/genetics ; KCNQ1 Potassium Channel/metabolism ; Human Embryonic Stem Cells/metabolism ; Long QT Syndrome/genetics ; Romano-Ward Syndrome/genetics ; Mutation/genetics ; Potassium Channels, Voltage-Gated/genetics ; KCNQ Potassium Channels/genetics
    Chemical Substances KCNQ1 Potassium Channel ; Potassium Channels, Voltage-Gated ; KCNQ Potassium Channels ; KCNQ1 protein, human
    Language English
    Publishing date 2023-05-10
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2393143-7
    ISSN 1876-7753 ; 1873-5061
    ISSN (online) 1876-7753
    ISSN 1873-5061
    DOI 10.1016/j.scr.2023.103119
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Base Editing of Human Pluripotent Stem Cells for Modeling Long QT Syndrome.

    Wu, Fujian / Guo, Tianwei / Sun, Lixiang / Li, Furong / Yang, Xiaofei

    Stem cell reviews and reports

    2022  Volume 18, Issue 4, Page(s) 1434–1443

    Abstract: Human pluripotent stem cells (hPSCs) have great potential for disease modeling, drug discovery, and regenerative medicine as they can differentiate into many different functional cell types via directed differentiation. However, the application of ... ...

    Abstract Human pluripotent stem cells (hPSCs) have great potential for disease modeling, drug discovery, and regenerative medicine as they can differentiate into many different functional cell types via directed differentiation. However, the application of disease modeling is limited due to a time-consuming and labor-intensive process of introducing known pathogenic mutations into hPSCs. Base editing is a newly developed technology that enables the facile introduction of point mutations into specific loci within the genome of living cells without unwanted genome injured. We describe an optimized stepwise protocol to introduce disease-specific mutations of long QT syndrome (LQTs) into hPSCs. We highlight technical issues, especially those associated with introducing a point mutation to obtain isogenic hPSCs without inserting any resistance cassette and reproducible cardiomyocyte differentiation. Based on the protocol, we succeeded in getting hPSCs carrying LQTs pathogenic mutation with excellent efficiency (31.7% of heterozygous clones, 9.1% of homozygous clones) in less than 20 days. In addition, we also provide protocols to analyze electrophysiological of hPSC-derived cardiomyocytes using multi-electrode arrays. This protocol is also applicable to introduce other disease-specific mutations into hPSCs.
    MeSH term(s) Cell Differentiation/genetics ; Clone Cells ; Humans ; Long QT Syndrome/genetics ; Long QT Syndrome/therapy ; Myocytes, Cardiac ; Pluripotent Stem Cells
    Language English
    Publishing date 2022-01-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2495577-2
    ISSN 2629-3277 ; 1558-6804 ; 1550-8943
    ISSN (online) 2629-3277 ; 1558-6804
    ISSN 1550-8943
    DOI 10.1007/s12015-021-10324-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: UV-B radiation enhances isoflavone accumulation and antioxidant capacity of soybean calluses.

    Wang, Mian / Liu, Guannan / Guo, Tianwei / Xie, Chong / Wang, Pei / Yang, Runqiang

    Frontiers in nutrition

    2023  Volume 10, Page(s) 1139698

    Abstract: Isoflavones are a class of flavonoids that belong to a large family of polyphenols and synthesized predominantly in legume, and they play important roles including acting as antioxidant, preventing osteoporosis, reducing the risk of atherosclerosis, and ... ...

    Abstract Isoflavones are a class of flavonoids that belong to a large family of polyphenols and synthesized predominantly in legume, and they play important roles including acting as antioxidant, preventing osteoporosis, reducing the risk of atherosclerosis, and protecting against cardiovascular disease. This study focused on the accumulation and synthetic metabolism of isoflavone in soybean hypocotyl and cotyledon calluses under UV-B radiation. The results showed that UV-B radiation significantly up-regulated the gene expression of phenylalanine ammonia lyase (PAL), cinnamate-4-hydroxylase (C4H), 4-coumarate-CoA ligase (4CL), chalcone ketone synthase (CHS), chalcone isomerase (CHI), and isoflavone synthase (IFS), and enhanced their activity in soybean hypocotyl and cotyledon calluses. As a result, isoflavones content increased by 21.23 and 21.75% in soybean hypocotyl and cotyledon calluses, respectively. Among the isoflavones produced, malonyldaidzin was the dominant one in hypocotyl callus, while malonylglycitin and daidzein were the main isoflavones in cotyledon calluses. This study revealed that UV-B radiation induced isoflavone accumulation in soybean calluses, which could be an efficient strategy to improve the nutritional value of food and produce high levels of bioactive secondary metabolites.
    Language English
    Publishing date 2023-03-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2776676-7
    ISSN 2296-861X
    ISSN 2296-861X
    DOI 10.3389/fnut.2023.1139698
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Cloning and Characterization of the RubisCO Activase Gene from Pinus massoniana

    Pan, Ting / Zhang, Fengkai / Sheng, Lu / Wang, Xiaofeng / Ruan, Weicheng / Zhu, Peihuang / Guo, Tianwei / Ji, Kongshu

    Plant Mol Biol Rep. 2023 Mar., v. 41, no. 1 p.81-91

    2023  

    Abstract: Pinus massoniana (P. massoniana) is an important fast-growing tree species in China. To explore photosynthesis-related gene resources and find possible targets for high photosynthetic-efficiency breeding of P. massoniana, we cloned two full-length cDNAs ... ...

    Abstract Pinus massoniana (P. massoniana) is an important fast-growing tree species in China. To explore photosynthesis-related gene resources and find possible targets for high photosynthetic-efficiency breeding of P. massoniana, we cloned two full-length cDNAs with conserved sequences of RubisCO activase (RCA) genes from P. massoniana. The RCA enzyme is important in maintaining the activity of RubisCO in vivo. Two genes, named PmRCA1 and PmRCA2, showed high similarity to RCA genes from other species and were identical to each other except for a 137 bp intervening sequence in the open reading frame (ORF) of PmRCA1, which led to different protein products, herein referred to as PmRCA1 and PmRCA2, respectively. PmRCA1 and PmRCA2 showed high homology to RCA of Pinus halepensis, and PmRCA1 had two cysteine residues in its carboxyl-terminal extension that were unique to the large RCA isoform. To characterize the function of PmRCA1 and PmRCA2, plant expression vectors driven by the constitutive 35S promoter were transformed in tobacco plants. Transgenic plants of PmRCA2 were grown better than wild tobacco plants and had significantly more leaves. Overexpression of PmRCA2 increased the maximum net photosynthetic rate and dark respiration rate of tobacco by 16.49% and 81.85%, respectively. Overexpression of PmRCA1 increased the maximum net photosynthetic rate and dark respiration rate of tobacco more than overexpression of PmRCA2, but it simultaneously enhanced photoinhibition of photosynthesis.
    Keywords Pinus halepensis ; Pinus massoniana ; cell respiration ; cysteine ; genes ; genetically modified organisms ; photoinhibition ; promoter regions ; ribulose-bisphosphate carboxylase ; ribulose-bisphosphate carboxylase activase ; tobacco ; trees ; China
    Language English
    Dates of publication 2023-03
    Size p. 81-91.
    Publishing place Springer US
    Document type Article ; Online
    ZDB-ID 2018592-3
    ISSN 1572-9818 ; 0735-9640
    ISSN (online) 1572-9818
    ISSN 0735-9640
    DOI 10.1007/s11105-022-01345-7
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Generation of an S100B homozygous knockout pluripotent stem cell line (WAe009-A-94) by the CRISPR/Cas9 system.

    Zhang, Pengxia / Wang, Hongyue / Li, Shengzhen / Guo, Tianwei / Zhang, Rui / Zhou, Ping / Ding, Shaoli

    Stem cell research

    2022  Volume 64, Page(s) 102924

    Abstract: S100 calcium binding protein beta (S100B) is an S-100 low molecular weight binding protein that regulates intracellular processes. This protein is involved in myocardial contractility and calcium handling capacity. In this study, a human embryonic stem ... ...

    Abstract S100 calcium binding protein beta (S100B) is an S-100 low molecular weight binding protein that regulates intracellular processes. This protein is involved in myocardial contractility and calcium handling capacity. In this study, a human embryonic stem cell (hESC) line with homozygous S100B knockout (S100B-KO) was generated using the CRISPR/Cas9 editing system. This S100B-KO hESC line maintained normal cell morphology and karyotype, expressed pluripotency markers, and could differentiate into cells of all three germ layers.
    MeSH term(s) Humans ; CRISPR-Cas Systems/genetics ; Human Embryonic Stem Cells/metabolism ; Calcium/metabolism ; Homozygote ; Calcium-Binding Proteins ; S100 Calcium Binding Protein beta Subunit/genetics ; S100 Calcium Binding Protein beta Subunit/metabolism
    Chemical Substances Calcium (SY7Q814VUP) ; Calcium-Binding Proteins ; S100B protein, human ; S100 Calcium Binding Protein beta Subunit
    Language English
    Publishing date 2022-09-20
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2393143-7
    ISSN 1876-7753 ; 1873-5061
    ISSN (online) 1876-7753
    ISSN 1873-5061
    DOI 10.1016/j.scr.2022.102924
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Cell death regulation in myocardial toxicity induced by antineoplastic drugs.

    Yu, Xue / Yang, Yan / Chen, Tianzuo / Wang, Yuqin / Guo, Tianwei / Liu, Yujun / Li, Hong / Yang, Liming

    Frontiers in cell and developmental biology

    2023  Volume 11, Page(s) 1075917

    Abstract: Homeostatic regulation of cardiomyocytes plays a critical role in maintaining normal physiological activity of cardiac tissue. Severe cardiotoxicity can lead to heart disease, including but not limited to arrhythmias, myocardial infarction and cardiac ... ...

    Abstract Homeostatic regulation of cardiomyocytes plays a critical role in maintaining normal physiological activity of cardiac tissue. Severe cardiotoxicity can lead to heart disease, including but not limited to arrhythmias, myocardial infarction and cardiac hypertrophy. In recent years, significant progress has been made in developing new therapies for cancer that have dramatically changed the treatment of several malignancies and continue to improve patient survival, but can also lead to serious cardiac adverse effects. Mitochondria are key organelles that maintain homeostasis in myocardial tissue and have been extensively involved in various cardiovascular disease episodes, including ischemic cardiomyopathy, heart failure and stroke. Several studies support that mitochondrial targeting is a major determinant of the cardiotoxic effects triggered by chemotherapeutic agents increasingly used in solid and hematologic tumors. This antineoplastic therapy-induced mitochondrial toxicity is due to different mechanisms, usually altering the mitochondrial respiratory chain, energy production and mitochondrial kinetics, or inducing mitochondrial oxidative/nitrosative stress, ultimately leading to cell death. This review focuses on recent advances in forms of cardiac cell death and related mechanisms of antineoplastic drug-induced cardiotoxicity, including autophagy, ferroptosis, apoptosis, pyroptosis, and necroptosis, explores and evaluates key proteins involved in cardiac cell death signaling, and presents recent advances in cardioprotective strategies for this disease. It aims to provide theoretical basis and targets for the prevention and treatment of pharmacological cardiotoxicity in clinical settings.
    Language English
    Publishing date 2023-02-07
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2737824-X
    ISSN 2296-634X
    ISSN 2296-634X
    DOI 10.3389/fcell.2023.1075917
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Sheng-Mai-Yin inhibits doxorubicin-induced ferroptosis and cardiotoxicity through regulation of Hmox1.

    Meng, Peina / Chen, Zhaoyang / Sun, Tianhui / Wu, Lili / Wang, Yifan / Guo, Tianwei / Yang, Jin / Zhu, Jiebin

    Aging

    2023  Volume 15, Issue 19, Page(s) 10133–10145

    Abstract: Doxorubicin (DOX) is a potent chemotherapeutic drug used for treating various cancers. However, its clinical use is limited due to its severe cardiotoxicity, which often results in high mortality rates. Sheng-Mai-Yin (SMY), a Traditional Chinese medicine ...

    Abstract Doxorubicin (DOX) is a potent chemotherapeutic drug used for treating various cancers. However, its clinical use is limited due to its severe cardiotoxicity, which often results in high mortality rates. Sheng-Mai-Yin (SMY), a Traditional Chinese medicine (TCM) prescription, has been reported to exert a cardioprotective effect in various cardiovascular diseases, including DOX-induced cardiotoxicity (DIC). This study aimed to provide novel insights into the underlying cardioprotective mechanism of SMY. SMY, composed of Codonopsis pilosula (Franch.), Ophiopogon japonicus (Thunb.), and Schisandra chinensis (Turcz.) at a ratio of 3:2:1, was intragastrically administered to male C57BL/6 mice for five days prior to the intraperitoneal injection of mitoTEMPO. One day later, DOX was intraperitoneally injected. Hematoxylin-eosin staining and Sirius red staining were carried out to estimate the pharmacological effect of SMY on cardiotoxicity. Mitochondrial function and ferroptosis biomarkers were also examined. AAV was utilized to overexpress Hmox1 to confirm whether Hmox1-mediated ferroptosis is associated with the cardioprotective effect of SMY on DOX-induced cardiotoxicity. The findings revealed that SMY therapy reduced the number of damaged cardiomyocytes. SMY therapy also reversed the inductions of cardiac MDA, serum MDA, LDH, and CK-MB contents, which dramatically decreased nonheme iron levels. In the meantime, SMY corrected the changes to ferroptosis indices brought on by DOX stimulation. Additionally, Hmox1 overexpression prevented SMY's ability to reverse cardiotoxicity. Our results showed that SMY effectively restrained lipid oxidation, reduced iron overload, and inhibited DOX-induced ferroptosis and cardiotoxicity, possibly via the mediation of Hmox1.
    MeSH term(s) Male ; Mice ; Animals ; Cardiotoxicity/prevention & control ; Ferroptosis ; Mice, Inbred C57BL ; Doxorubicin/toxicity ; Myocytes, Cardiac/metabolism ; Oxidative Stress ; Membrane Proteins/metabolism ; Heme Oxygenase-1/metabolism
    Chemical Substances fructus schizandrae, radix ginseng, radix ophiopogonis drug combination ; Doxorubicin (80168379AG) ; Hmox1 protein, mouse (EC 1.14.14.18) ; Membrane Proteins ; Heme Oxygenase-1 (EC 1.14.14.18)
    Language English
    Publishing date 2023-09-28
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1945-4589
    ISSN (online) 1945-4589
    DOI 10.18632/aging.205062
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Expression and clinical significance of PD-L1 and infiltrated immune cells in the gastric adenocarcinoma microenvironment.

    Quan, Qiuying / Guo, Lingchuan / Huang, Lili / Liu, Zhiju / Guo, Tianwei / Shen, Yu / Ding, Sisi / Liu, Cuiping / Cao, Lei

    Medicine

    2023  Volume 102, Issue 48, Page(s) e36323

    Abstract: Programmed death-ligand 1 (PD-L1) is a crucial negative costimulatory molecule expressed on both tumor and immune cells. It binds to programmed death-1, facilitating tumor escape. Tumor-infiltrating immune cells play a vital role in this process. However, ...

    Abstract Programmed death-ligand 1 (PD-L1) is a crucial negative costimulatory molecule expressed on both tumor and immune cells. It binds to programmed death-1, facilitating tumor escape. Tumor-infiltrating immune cells play a vital role in this process. However, the clinical relationship between PD-L1 expression and tumor-infiltrating immune cells remains uncertain. Immunohistochemistry (IHC) was utilized to assess PD-L1 expression and TIIC markers (CD3, CD4, CD8, CD19, CD31, CD68, CD11c, CD56, and α-smooth muscle actin) in gastric adenocarcinoma tissues from 268 patients. The aim was to explore the prognostic significance of PD-L1 and the infiltration of different immune cell types. The study analyzed overall survival and the correlations between PD-L1 expression, immune cell infiltration, and clinicopathological characteristics. Among the 268 patients, 52 (19.40%) exhibited high PD-L1 expression on tumor cells (TPD-L1), while 167 (62.31%) displayed high PD-L1 expression on immune cells (IPD-L1). Patients with high IPD-L1 expression showed improved survival compared to those with low IPD-L1 expression (P = .028). High TPD-L1 expression associated with various clinicopathological features, such as larger tumor size, poorer differentiation, deeper invasion depth, and higher tumor stage. Conversely, patients with high IPD-L1 expression exhibited shallower tumor invasion and lower mortality rates. Univariate analysis indicated that superficial tumor infiltration, absence of lymph node and distant metastasis, low tumor stage, high IPD-L1 expression, and elevated CD8 and CD19 expression were associated with a reduced risk of tumor progression. Multivariate analysis revealed that patients with high IPD-L1 and CD8 expression or high TPD-L1 and low CD31 expression experienced significantly better overall survival than patients with other combinations. The findings indicate that patients with high PD-L1 expression in immune cells have a substantially improved prognosis. Additionally, the combination of PD-L1 with CD8 or CD31 expression status can serve as an indicator of prognosis in patients with gastric adenocarcinoma.
    MeSH term(s) Humans ; B7-H1 Antigen/metabolism ; Clinical Relevance ; Prognosis ; CD8-Positive T-Lymphocytes ; Lymphocytes, Tumor-Infiltrating/metabolism ; Stomach Neoplasms/pathology ; Adenocarcinoma/pathology ; Tumor Microenvironment
    Chemical Substances CD274 protein, human ; B7-H1 Antigen
    Language English
    Publishing date 2023-12-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80184-7
    ISSN 1536-5964 ; 0025-7974
    ISSN (online) 1536-5964
    ISSN 0025-7974
    DOI 10.1097/MD.0000000000036323
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Clinical significance of CD155 expression and correlation with cellular components of tumor microenvironment in gastric adenocarcinoma.

    Liu, Xue / Xu, Chenyang / Guo, Tianwei / Zhan, Shenghua / Quan, Qiuying / Li, Mengsi / Wang, Ziyi / Zhang, Xueguang / Guo, Lingchuan / Cao, Lei

    Frontiers in immunology

    2023  Volume 14, Page(s) 1173524

    Abstract: Introduction: CD155 is recently emerging as a promising target in malignancies. However, the relationship between CD155 expression and tumor microenvironment (TME) cell infiltration in gastric adenocarcinoma (GAC) has rarely been clarified.: Methods: ...

    Abstract Introduction: CD155 is recently emerging as a promising target in malignancies. However, the relationship between CD155 expression and tumor microenvironment (TME) cell infiltration in gastric adenocarcinoma (GAC) has rarely been clarified.
    Methods: We measured CD155 expression in specimens of gastric precancerous disease and GAC by immunohistochemistry. The association of CD155 expression with GAC progression and cells infiltration in TME was evaluated through 268 GAC tissues and public dataset analysis.
    Results: We showed that the expression of CD155 was positively correlated with the pathological development of gastric precancerous disease (r = 0.521,
    Conclusions: CD155 may play a pivotal role in the development of GAC through both immunological and non-immunological mechanisms and be expected to become a novel target of immunotherapy in GAC patients.
    MeSH term(s) Humans ; Prognosis ; Tumor Microenvironment ; Clinical Relevance ; Immunohistochemistry ; Stomach Neoplasms/pathology ; Adenocarcinoma/pathology
    Language English
    Publishing date 2023-06-27
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2023.1173524
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Cadmium pollution of soil-rice ecosystems in rice cultivation dominated regions in China: A review

    Zou, Mengmeng / Zhou, Shenglu / Zhou, Yujie / Jia, Zhenyi / Guo, Tianwei / Wang, Junxiao

    Environmental pollution. 2021 July 01, v. 280

    2021  

    Abstract: Cd accumulation in paddy soils and its subsequent transfer to the food chain are widespread environmental issues, which has been extensively investigated in China. However, most studies focused on regional scales and these results may not be applicable ... ...

    Abstract Cd accumulation in paddy soils and its subsequent transfer to the food chain are widespread environmental issues, which has been extensively investigated in China. However, most studies focused on regional scales and these results may not be applicable to present the Cd contamination status in soil-rice ecosystems at a national scale. Therefore, based on collected data from China’s rice cultivation dominated regions, this study provides the Cd pollution level of paddy soils and rice grains in China. Results indicates that the Yangtze River basin, especially Hunan, required more attention due to the elevated Cd concentrations in soil-rice ecosystems. Moreover, this review summarizes the significant natural and anthropogenic sources, transport and accumulation mechanism as well as the influencing factors of Cd in soil-rice ecosystems. The wide occurrence of Cd contamination in paddy soils derived primarily from mining activities, intensive application of phosphates fertilizers and e-waste. Physicochemical characteristics of soil, soil microorganisms, temperature as well as the physiological features of rice plants all contribute to Cd accumulation in rice grains, which can be controlled to mitigate Cd accumulation in rice grains. This review will provide a scientific reference for Cd pollution control and management with respect to paddy field ecosystems in China and other countries.
    Keywords cadmium ; electronic wastes ; food chain ; paddies ; pollution ; pollution control ; rice ; temperature ; watersheds ; China ; Yangtze River
    Language English
    Dates of publication 2021-0701
    Publishing place Elsevier Ltd
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 280652-6
    ISSN 1873-6424 ; 0013-9327 ; 0269-7491
    ISSN (online) 1873-6424
    ISSN 0013-9327 ; 0269-7491
    DOI 10.1016/j.envpol.2021.116965
    Database NAL-Catalogue (AGRICOLA)

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