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Li YK, Gao AB, Zeng T, Liu D, Zhang QF, Ran XM, Tang ZZ, Li Y, Liu J, Zhang T, Shi GQ, Zhou WC, Zou WD, Peng J, Zhang J, Li H, Zou J. ANGPTL4 accelerates ovarian serous cystadenocarcinoma carcinogenesis and angiogenesis in the tumor microenvironment by activating the JAK2/STAT3 pathway and interacting with ESM1. J Transl Med 2024; 22:46. [PMID: 38212795 PMCID: PMC10785435 DOI: 10.1186/s12967-023-04819-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 12/21/2023] [Indexed: 01/13/2024] Open
Abstract
BACKGROUND Ovarian cancer (OC) is a malignant neoplasm that displays increased vascularization. Angiopoietin-like 4 (ANGPTL4) is a secreted glycoprotein that functions as a regulator of cell metabolism and angiogenesis and plays a critical role in tumorigenesis. However, the precise role of ANGPTL4 in the OC microenvironment, particularly its involvement in angiogenesis, has not been fully elucidated. METHODS The expression of ANGPTL4 was confirmed by bioinformatics and IHC in OC. The potential molecular mechanism of ANGPTL4 was measured by RNA-sequence. We used a series of molecular biological experiments to measure the ANGPTL4-JAK2-STAT3 and ANGPTL4-ESM1 axis in OC progression, including MTT, EdU, wound healing, transwell, xenograft model, oil red O staining, chick chorioallantoic membrane assay and zebrafish model. Moreover, the molecular mechanisms were confirmed by Western blot, Co-IP and molecular docking. RESULTS Our study demonstrates a significant upregulation of ANGPTL4 in OC specimens and its strong association with unfavorable prognosis. RNA-seq analysis affirms that ANGPTL4 facilitates OC development by driving JAK2-STAT3 signaling pathway activation. The interaction between ANGPTL4 and ESM1 promotes ANGPTL4 binding to lipoprotein lipase (LPL), thereby resulting in reprogrammed lipid metabolism and the promotion of OC cell proliferation, migration, and invasion. In the OC microenvironment, ESM1 may interfere with the binding of ANGPTL4 to integrin and vascular-endothelial cadherin (VE-Cad), which leads to stabilization of vascular integrity and ultimately promotes angiogenesis. CONCLUSION Our findings underscore that ANGPTL4 promotes OC development via JAK signaling and induces angiogenesis in the tumor microenvironment through its interaction with ESM1.
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Affiliation(s)
- Yu-Kun Li
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China
- The Second Affiliated Hospital, Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology, Cancer Research Institute, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - An-Bo Gao
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China
- Clinical Research Institute, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Tian Zeng
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China
- The Second Affiliated Hospital, Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology, Cancer Research Institute, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Dan Liu
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China
| | - Qun-Feng Zhang
- The Second Affiliated Hospital, Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology, Cancer Research Institute, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Xiao-Min Ran
- Department of Gynecologic Oncology, School of Medicine, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya, Central South University, Changsha, Hunan, China
| | - Zhen-Zi Tang
- Department of Gynecologic Oncology, School of Medicine, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya, Central South University, Changsha, Hunan, China
| | - Yan Li
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China
| | - Jue Liu
- The Second Affiliated Hospital, Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology, Cancer Research Institute, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Ting Zhang
- The Second Affiliated Hospital, Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology, Cancer Research Institute, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Gang-Qing Shi
- The Second Affiliated Hospital, Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology, Cancer Research Institute, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Wen-Chao Zhou
- The Second Affiliated Hospital, Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology, Cancer Research Institute, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Wen-da Zou
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China
| | - Juan Peng
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China
| | - Juan Zhang
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China.
| | - Hui Li
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China.
| | - Juan Zou
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China.
- The Second Affiliated Hospital, Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology, Cancer Research Institute, Hengyang Medical School, University of South China, Hengyang, Hunan, China.
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Luo QJ, Zhou WC, Liu XY, Li YJ, Xie QL, Wang B, Liu C, Wang WM, Wang W, Zhou XD. Chemical Constituents and α-Glucosidase Inhibitory, Antioxidant and Hepatoprotective Activities of Ampelopsis grossedentata. Molecules 2023; 28:7956. [PMID: 38138447 PMCID: PMC10745659 DOI: 10.3390/molecules28247956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023] Open
Abstract
Ampelopsis grossedentata is a valuable medicinal and edible plant, which is often used as a traditional tea by the Tujia people in China. A. grossedentata has numerous biological activities and is now widely used in the pharmaceutical and food industries. In this study, two new flavonoids (1-2) and seventeen known compounds (3-19) were isolated and identified from the dried stems and leaves of A. grossedentata. These isolated compounds were characterized by various spectroscopic data including mass spectrometry and nuclear magnetic resonance spectroscopy. All isolates were assessed for their α-glucosidase inhibitory, antioxidant, and hepatoprotective activities, and their structure-activity relationships were further discussed. The results indicated that compound 1 exhibited effective inhibitory activity against α-glucosidase, with an IC50 value of 0.21 μM. In addition, compounds 1-2 demonstrated not only potent antioxidant activities but also superior hepatoprotective properties. The findings of this study could serve as a reference for the development of A. grossedentata-derived products or drugs aimed at realizing their antidiabetic, antioxidant, and hepatoprotective functions.
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Affiliation(s)
- Qu-Jing Luo
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (Q.-J.L.); (W.-C.Z.); (X.-Y.L.); (Y.-J.L.); (Q.-L.X.); (B.W.); (C.L.); (W.-M.W.)
| | - Wen-Chao Zhou
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (Q.-J.L.); (W.-C.Z.); (X.-Y.L.); (Y.-J.L.); (Q.-L.X.); (B.W.); (C.L.); (W.-M.W.)
| | - Xin-Yi Liu
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (Q.-J.L.); (W.-C.Z.); (X.-Y.L.); (Y.-J.L.); (Q.-L.X.); (B.W.); (C.L.); (W.-M.W.)
| | - Ya-Jie Li
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (Q.-J.L.); (W.-C.Z.); (X.-Y.L.); (Y.-J.L.); (Q.-L.X.); (B.W.); (C.L.); (W.-M.W.)
| | - Qing-Ling Xie
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (Q.-J.L.); (W.-C.Z.); (X.-Y.L.); (Y.-J.L.); (Q.-L.X.); (B.W.); (C.L.); (W.-M.W.)
| | - Bin Wang
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (Q.-J.L.); (W.-C.Z.); (X.-Y.L.); (Y.-J.L.); (Q.-L.X.); (B.W.); (C.L.); (W.-M.W.)
| | - Chao Liu
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (Q.-J.L.); (W.-C.Z.); (X.-Y.L.); (Y.-J.L.); (Q.-L.X.); (B.W.); (C.L.); (W.-M.W.)
- Zhangjiajie Meicha Technology Research Center, Hunan Qiankun Biotechnology Co., Ltd., Zhangjiajie 427099, China
| | - Wen-Mao Wang
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (Q.-J.L.); (W.-C.Z.); (X.-Y.L.); (Y.-J.L.); (Q.-L.X.); (B.W.); (C.L.); (W.-M.W.)
- Zhangjiajie Meicha Technology Research Center, Hunan Qiankun Biotechnology Co., Ltd., Zhangjiajie 427099, China
| | - Wei Wang
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (Q.-J.L.); (W.-C.Z.); (X.-Y.L.); (Y.-J.L.); (Q.-L.X.); (B.W.); (C.L.); (W.-M.W.)
| | - Xu-Dong Zhou
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (Q.-J.L.); (W.-C.Z.); (X.-Y.L.); (Y.-J.L.); (Q.-L.X.); (B.W.); (C.L.); (W.-M.W.)
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Zhou WC, Zhang QF, Chen JL, Gan JP, Li YK, Zou J. Angiopoietin4 (ANGPT4) expression and potential mechanisms in carcinogenesis: current achievements and perspectives. Clin Exp Med 2023; 23:4449-4456. [PMID: 37659993 DOI: 10.1007/s10238-023-01178-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 08/21/2023] [Indexed: 09/04/2023]
Abstract
Angiopoietin4(ANGPT4) which plays a significant role in endothelial cell proliferation, survival, angiogenesis and expansion in tumors and other pathological states is a significant regulator of tumor angiogenesis. ANGPT4 expression is enhanced in many cancer cells. For example, the overexpression of ANGPT4 promotes the formation, development and progress of lung adenocarcinoma, glioblastoma and ovarian cancer. Related studies show that ANGPT4 encourages the proliferation, survival and invasion of tumor cells, while promoting the expansion of the tumor vascular system and affecting the tumor immune microenvironment. ANGPT4 can also promote carcinogenesis by affecting the ERK1/2, PI3K/AKT and other signal pathways downstream of tyrosine kinase with immunoglobulin-like and EGF-like domains 2(TIE2) and TIE2. Therefore, ANGPT4 may be a potential and significant biomarker for predicting malignant tumor progression and adverse outcomes. In addition, inhibition of ANGPT4 may be a meaningful cancer treatment. This paper reviews the latest research results of ANGPT4 in preclinical research, and emphasizes its role in carcinogenesis. Additional research on the carcinogenic function of ANGPT4 could provide new insights into cancer biology and novel methods for cancer diagnosis and treatment.
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Affiliation(s)
- Wen-Chao Zhou
- Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular and Molecular Pathology, Hengyang Medical School, Cancer Research Institute, The Second Affiliated Hospital, University of South China, Hengyang, Hunan, China
| | - Qun-Feng Zhang
- Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular and Molecular Pathology, Hengyang Medical School, Cancer Research Institute, The Second Affiliated Hospital, University of South China, Hengyang, Hunan, China
| | - Jun-Ling Chen
- Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular and Molecular Pathology, Hengyang Medical School, Cancer Research Institute, The Second Affiliated Hospital, University of South China, Hengyang, Hunan, China
| | - Jin-Peng Gan
- Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular and Molecular Pathology, Hengyang Medical School, Cancer Research Institute, The Second Affiliated Hospital, University of South China, Hengyang, Hunan, China
| | - Yu-Kun Li
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China.
| | - Juan Zou
- Department of Gynecology, Hunan Province Key Laboratory of Tumor Cellular and Molecular Pathology, Hengyang Medical School, Cancer Research Institute, The Second Affiliated Hospital, University of South China, Hengyang, Hunan, China.
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, Hunan, China.
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Yang L, Li KL, Pang YX, Zhou WC. [Clinical effects of free descending branch tissue flap of lateral circumflex femoral artery in repairing Wagner grade 3 or 4 diabetic foot wounds]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:1148-1155. [PMID: 36594145 DOI: 10.3760/cma.j.cn501225-20220321-00076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Objective: To investigate the clinical effects of free descending branch tissue flap of lateral circumflex femoral artery in repairing Wagner grade 3 or 4 diabetic foot wounds. Methods: A retrospective observational study was conducted. From October 2019 to January 2022, 12 patients (10 males and 2 females, aged 38-66 years, with an average of 52 years) with diabetic foot wounds who met the inclusion criteria were admitted to the First People's Hospital of Yulin, of whom 5 cases being Wagner grade 3 and 7 cases being Wagner grade 4. Wound debridement and vacuum sealing drainage were performed to control infection, and the wound area after debridement was between 13 cm×6 cm and 28 cm×11 cm. The wounds were repaired with free descending branch tissue flaps of lateral circumflex femoral artery. Among them, the wounds of 4 cases were repaired with single flap of musculocutaneous branch or intermuscular branch of descending branch tissue flap of lateral circumflex femoral artery, 1 case with lobulated flap, 1 case with bilateral tandem flap, and 6 cases with chimeric lateral femoral muscle flap. The area of resected tissue flap was 9 cm×7 cm to 21 cm×10 cm; end-to-end anastomosis was selected between vessels in the donor sites and the recipient sites, and pressurized treatment should be performed if necessary. The donor site wounds of 10 patients were treated with cosmetic tension-relieving suture, and the donor site wounds of 2 patients were repaired with split-thickness skin graft from head. After operation, the condition of wound repair was recorded. After wound healing, the level of 2-hour postprandial blood glucose of patients was measured. During follow-up, the wound healing of the recipient site and scar formation of the donor site were observed. Before and 6 months after operation, computer tomography angiography was used to detect and compare the blood perfusion of the affected limb. At the last follow-up, the walking ability of the patients was recorded. Results: The wounds of 9 patients healed well after operation; the flaps in the recipient site of 2 patients were infected on postoperative day 5 after surgery and were repaired by suturing in stage Ⅱ after open drainage and inflammation control; the distal end of the grafted tandem flap in 1 patient gradually developed purple necrosis on postoperative day 4 and was repaired with a skin graft after debridement. After wound healing, the 2-hour postprandial blood glucose value of all patients was controlled in the range of 8-12 mmol/L. During Follow-up of 6 months to 1 year, 3 patients had partial ulceration in the plantar compression area, which healed after decompression combined with dressing change or flap repair, while the other 9 patients had no ulceration in the recipient area; the appearance of the affected foot was plump after wound healing, the transplanted flaps had good blood supply and good fit with the surrounding tissue, and were wear-resistant, but insensitive. During follow-up, only linear scar remained in the donor area of direct suture in 10 cases, and the skin grafts in the donor area were completely survived in 2 cases. Compared with the patency of the main blood vessels of the ankle joint segment of the affected limb before operation, the vascular network of the flap transplantation area in the affected foot was formed 6 months after operation. At the last follow-up, 8 patients could walk independently, and 4 patients could walk with crutches. Conclusions: The free descending branch tissue flap of lateral circumflex femoral artery is effective in repairing Wagner grade 3 or 4 diabetic foot wounds, which can shorten the course of disease and improve local blood flow.
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Affiliation(s)
- L Yang
- Department of Burns, Plastic and Reconstructive Surgery, the First People's Hospital of Yulin, Yulin 537000, China
| | - K L Li
- Department of Burns, Plastic and Reconstructive Surgery, the First People's Hospital of Yulin, Yulin 537000, China
| | - Y X Pang
- Department of Burns, Plastic and Reconstructive Surgery, the First People's Hospital of Yulin, Yulin 537000, China
| | - W C Zhou
- Department of Burns, Plastic and Reconstructive Surgery, the First People's Hospital of Yulin, Yulin 537000, China
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Fang Y, Zhu XJ, Wang LQ, Shi YW, Zhou WC, Wu ZF, Qiu CY, Mao ZF, Ni JZ, Chen M, Ao T, Yang B, Yang YF, Sun YG, Cheng L. [Minutes of the 2020 China Rhinology Annual Meeting]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:548-552. [PMID: 34011018 DOI: 10.3760/cma.j.cn115330-20210224-00085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y Fang
- Editorial Office of Chinese Journal of Otorhinolaryngology Head and Neck Surgery, Chinese Medical Association, Beijing 100710, China
| | - X J Zhu
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - L Q Wang
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Y W Shi
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - W C Zhou
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Z F Wu
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - C Y Qiu
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Z F Mao
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - J Z Ni
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - M Chen
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - T Ao
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - B Yang
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Y F Yang
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Y G Sun
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - L Cheng
- Department of Otorhinolaryngology, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China International Centre for Allergy Research, Nanjing Medical University, and Clinical Allergy Center, Jiangsu Province Hospital, Nanjing 210029, China
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Hu XY, Fei YC, Zhou WC, Zhu JM, Lv DL. Triple administration of osimertinib followed by chemotherapy for advanced lung adenocarcinoma: A case report. World J Clin Cases 2021; 9:2627-2633. [PMID: 33889629 PMCID: PMC8040179 DOI: 10.12998/wjcc.v9.i11.2627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/10/2021] [Accepted: 01/28/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Osimertinib is the recommended first-line treatment for adult patients with epidermal growth factor receptor (EGFR) mutation positive advanced or metastatic non-small cell lung cancer (NSCLC). However, primary or acquired resistance to EGFR-tyrosine kinase inhibitors (EGFR-TKIs) seems inevitable, and when drug-resistance occurs during treatment with osimertinib, the standard of care is to discontinue the TKI.
CASE SUMMARY A 57-year-old female patient with lung adenocarcinoma presented with an irritating cough accompanied by chest distress of one month duration. An enhanced head magnetic resonance imaging scan showed brain metastases. An EGFR mutation (exon 21 L858R) was detected in pleural fluid. The patient was treated with oral osimertinib (80 mg once daily) from January 2018 but developed progressive disease on December 2018. She was then successfully treated with re-challenge and tri-challenge with osimertinib (80 mg once daily) by resensitization chemotherapy twice after the occurrence of drug-resistance to osimertinib, and to date has survived for 31 mo.
CONCLUSION This case may provide some selective therapeutic options for NSCLC patients with acquired drug-resistance who were previously controlled on osimertinib treatment.
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Affiliation(s)
- Xu-Yan Hu
- Department of Clinical Medicine, Bengbu Medical College, Bengbu 233030, Anhui Province, China
| | - Yu-Cheng Fei
- Department of Clinical Oncology, 901 Hospital of Joint Logistics Support Force of People Liberation Army, Hefei 230031, Anhui Province, China
| | - Wen-Chao Zhou
- Intelligent Pathology Institute, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, Anhui Province, China
| | - Jin-Miao Zhu
- Department of Pharmaceutical Engineering, Hefei Normal University, Hefei 230601, Anhui Province, China
| | - Dong-Lai Lv
- Department of Clinical Oncology, 901 Hospital of Joint Logistics Support Force of People Liberation Army, Hefei 230031, Anhui Province, China
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Li DH, Zhai CH, Zhou WC, Huang QH, Wang L, Zheng H, Chen L, Chen X, Zhang RJ. Effects of Bilayer Thickness on the Morphological, Optical, and Electrical Properties of Al 2O 3/ZnO Nanolaminates. Nanoscale Res Lett 2017; 12:563. [PMID: 29022280 PMCID: PMC5636778 DOI: 10.1186/s11671-017-2328-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 09/26/2017] [Indexed: 05/29/2023]
Abstract
This report mainly focuses on the investigation of morphological, optical, and electrical properties of Al2O3/ZnO nanolaminates regulated by varying bilayer thicknesses. The growth mechanism of nanolaminates based on atomic layer deposition and Al penetration into ZnO layer are proposed. The surface roughness of Al2O3/ZnO nanolaminates can be controlled due to the smooth effect of interposed Al2O3 layers. The thickness, optical constants, and bandgap information of nanolaminates have been investigated by spectroscopic ellipsometry measurement. The band gap and absorption edge have a blue shift with decreasing the bilayer thickness on account of the Burstein-Moss effect, the quantum confinement effect and the characteristic evolution of nanolaminates. Also, the carrier concentrations and resistivities are found to be modified considerably among various bilayer thicknesses. The modulations of these properties are vital for Al2O3/ZnO nanolaminates to be used as transparent conductor and high resistance layer in optoelectronic applications.
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Affiliation(s)
- Da-Hai Li
- Key Laboratory of Micro and Nano Photonic Structures, Ministry of Education, Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Chen-Hui Zhai
- Key Laboratory of Micro and Nano Photonic Structures, Ministry of Education, Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Wen-Chao Zhou
- State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, 130033, China
| | - Qing-Hua Huang
- Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan, 621999, China
| | - Lei Wang
- Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan, 621999, China
| | - Hua Zheng
- Key Laboratory of Micro and Nano Photonic Structures, Ministry of Education, Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Lei Chen
- Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan, 621999, China
| | - Xin Chen
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China
| | - Rong-Jun Zhang
- Key Laboratory of Micro and Nano Photonic Structures, Ministry of Education, Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, China.
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Hu ET, Cai QY, Zhang RJ, Wei YF, Zhou WC, Wang SY, Zheng YX, Wei W, Chen LY. Effective method to study the thickness-dependent dielectric functions of nanometal thin film. Opt Lett 2016; 41:4907-4910. [PMID: 27805647 DOI: 10.1364/ol.41.004907] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new method for measuring the dielectric functions change with the thickness of nanometal thin films was proposed. To confirm the accuracy and reliability of the method, a nano-thin wedge-shaped gold (Au) film with continuously varied thicknesses was designed and prepared on K9 glass by direct-current-sputtering (DC-sputtering). The thicknesses and the dielectric functions in the wavelength range of 300-1100 nm of the nano-thin Au films were obtained by fitting the ellipsometric parameters with the Drude and critical points model. Results show that while the real part of the dielectric function (ϵ1) changes marginally with increasing film thickness, the imaginary part (ϵ2) decreases drastically with the film thickness, approaching a stable value when the film thickness increases up to about 42 nm. This method is particularly useful in the study of thickness-dependent optical properties of nano-thin film.
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Cao AL, Tang QF, Zhou WC, Qiu YY, Hu SJ, Yin PH. Ras/ERK signaling pathway is involved in curcumin-induced cell cycle arrest and apoptosis in human gastric carcinoma AGS cells. J Asian Nat Prod Res 2014; 17:56-63. [PMID: 25492214 DOI: 10.1080/10286020.2014.951923] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Curcumin, the biologically active compound from the rhizome of Curcuma longa, could inhibit cell growth and induce apoptosis in gastric carcinoma. However, the underlying mechanism of curcumin on gastric carcinoma cells still needs further investigation. In this study, morphological observation indicated that curcumin inhibited the proliferation of AGS cells in a dose-dependent manner. According to the flow cytometric analysis, curcumin treatment resulted in G2/M arrest in AGS cells, accompanied with an increased expression of cyclin B1 and a decreased expression of cyclin D1. In addition, DNA ladders were observed by gel electrophoresis. Meanwhile, the activities of caspase-3, -8, and -9 were also enhanced in curcumin-treated AGS cells. Nevertheless, the increased activities could be inhibited by benzyloxycarbonyl-Val-Ala-Asp (OME)-fluoromethylketone (z-VAD-fmk), which suggested that the apoptosis was caspase-dependent. Furthermore, downregulation of rat sarcoma (Ras) and upregulation of extracellular-signal-regulated kinase (ERK) were also observed in AGS cells treated with curcumin by Western blot. U0126, an ERK inhibitor, blocked curcumin-induced apoptosis. The results suggested that curcumin inhibited the growth of the AGS cells and induced apoptosis through the activation of Ras/ERK signaling pathway and downstream caspase cascade, and curcumin might be a potential target for the treatment of gastric carcinoma.
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Affiliation(s)
- Ai-Li Cao
- a Department of Clinical Laboratories , Experimental Center, Putuo Hospital, Shanghai University of Traditional Chinese Medicine , Shanghai 200062 , China
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10
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Zhang H, Zhou WC, Li X, Meng WB, Zhang L, Zhu XL, Zhu KX, Bai ZT, Yan J, Liu T, Xu XC, Li YM. 5-Azacytidine suppresses the proliferation of pancreatic cancer cells by inhibiting the Wnt/β-catenin signaling pathway. Genet Mol Res 2014; 13:5064-72. [PMID: 25061731 DOI: 10.4238/2014.july.4.22] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
5-Azacytidine has been shown to be an effective anti-pancreatic cancer drug, but the mechanism remains unknown. In the current study, we explored the effect of 5-azacytidine on abnormal activation of the Wnt-β-catenin signaling pathway in pancreatic cancer cells. The human pancreatic cancer cell line Bxpc-3 was treated with different concentrations of 5-azacytidine for various times. The proliferation and early apoptosis of the cells were evaluated using the CCK8 method and flow cytometry, respectively. mRNA and protein expression of β-catenin, c-myc, and cyclinD1 were detected using real-time fluorescent quantitative polymerase chain reaction and Western blot analysis, respectively. The proliferation of Bxpc-3 cells was suppressed by 5-azacytidine. The early apoptosis of the cells was significantly enhanced over time and with increasing drug concentrations. The expression of β-catenin, c-myc, and cyclinD1 were down-regulated, showing significant differences between different concentrations and treatment times (P < 0.05). 5-Azacytidine suppressed the proliferation of pancreatic cancer cells by inhibiting the Wnt/β-catenin signaling pathway, particularly the expression of β-catenin, c-myc, and cyclinD1. This study may provide a new potential strategy for diagnosing and treating pancreatic cancer.
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Affiliation(s)
- H Zhang
- Department II of General Surgery, The First Hospital of Lanzhou University, Hepatopancreatobiliary Surgery Institute of Gansu Province, Clinical Medical College Cancer Center of Lanzhou University, Lanzhou, China
| | - W C Zhou
- Department II of General Surgery, The First Hospital of Lanzhou University, Hepatopancreatobiliary Surgery Institute of Gansu Province, Clinical Medical College Cancer Center of Lanzhou University, Lanzhou, China
| | - X Li
- Department II of General Surgery, The First Hospital of Lanzhou University, Hepatopancreatobiliary Surgery Institute of Gansu Province, Clinical Medical College Cancer Center of Lanzhou University, Lanzhou, China
| | - W B Meng
- Department II of General Surgery, The First Hospital of Lanzhou University, Hepatopancreatobiliary Surgery Institute of Gansu Province, Clinical Medical College Cancer Center of Lanzhou University, Lanzhou, China
| | - L Zhang
- Department II of General Surgery, The First Hospital of Lanzhou University, Hepatopancreatobiliary Surgery Institute of Gansu Province, Clinical Medical College Cancer Center of Lanzhou University, Lanzhou, China
| | - X L Zhu
- Department II of General Surgery, The First Hospital of Lanzhou University, Hepatopancreatobiliary Surgery Institute of Gansu Province, Clinical Medical College Cancer Center of Lanzhou University, Lanzhou, China
| | - K X Zhu
- Department II of General Surgery, The First Hospital of Lanzhou University, Hepatopancreatobiliary Surgery Institute of Gansu Province, Clinical Medical College Cancer Center of Lanzhou University, Lanzhou, China
| | - Z T Bai
- Department II of General Surgery, The First Hospital of Lanzhou University, Hepatopancreatobiliary Surgery Institute of Gansu Province, Clinical Medical College Cancer Center of Lanzhou University, Lanzhou, China
| | - J Yan
- Department II of General Surgery, The First Hospital of Lanzhou University, Hepatopancreatobiliary Surgery Institute of Gansu Province, Clinical Medical College Cancer Center of Lanzhou University, Lanzhou, China
| | - T Liu
- General Surgery, The Second Hospital of Lanzhou University, Lanzhou, China
| | - X C Xu
- General Surgery, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Y M Li
- General Surgery, The Second Hospital of Lanzhou University, Lanzhou, China
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Huang LD, Fan YZ, Tian Y, Yang Y, Liu Y, Wang J, Zhao WS, Zhou WC, Cheng XY, Cao P, Lu XY, Yu Y. Inherent dynamics of head domain correlates with ATP-recognition of P2X4 receptors: insights gained from molecular simulations. PLoS One 2014; 9:e97528. [PMID: 24878662 PMCID: PMC4039465 DOI: 10.1371/journal.pone.0097528] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 04/22/2014] [Indexed: 11/19/2022] Open
Abstract
P2X receptors are ATP-gated ion channels involved in many physiological functions, and determination of ATP-recognition (AR) of P2X receptors will promote the development of new therapeutic agents for pain, inflammation, bladder dysfunction and osteoporosis. Recent crystal structures of the zebrafish P2X4 (zfP2X4) receptor reveal a large ATP-binding pocket (ABP) located at the subunit interface of zfP2X4 receptors, which is occupied by a conspicuous cluster of basic residues to recognize triphosphate moiety of ATP. Using the engineered affinity labeling and molecular modeling, at least three sites (S1, S2 and S3) within ABP have been identified that are able to recognize the adenine ring of ATP, implying the existence of at least three distinct AR modes in ABP. The open crystal structure of zfP2X4 confirms one of three AR modes (named AR1), in which the adenine ring of ATP is buried into site S1 while the triphosphate moiety interacts with clustered basic residues. Why architecture of ABP favors AR1 not the other two AR modes still remains unexplored. Here, we examine the potential role of inherent dynamics of head domain, a domain involved in ABP formation, in AR determinant of P2X4 receptors. In silico docking and binding free energy calculation revealed comparable characters of three distinct AR modes. Inherent dynamics of head domain, especially the downward motion favors the preference of ABP for AR1 rather than AR2 and AR3. Along with the downward motion of head domain, the closing movement of loop139-146 and loop169-183, and structural rearrangements of K70, K72, R298 and R143 enabled ABP to discriminate AR1 from other AR modes. Our observations suggest the essential role of head domain dynamics in determining AR of P2X4 receptors, allowing evaluation of new strategies aimed at developing specific blockers/allosteric modulators by preventing the dynamics of head domain associated with both AR and channel activation of P2X4 receptors.
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Affiliation(s)
- Li-Dong Huang
- Department of Pharmacology and Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying-Zhe Fan
- Putuo District Center Hospital, Shanghai University of Chinese Traditional Medicine, Shanghai, China
| | - Yun Tian
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Yang Yang
- Department of Pharmacology and Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Liu
- Department of Pharmacology and Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jin Wang
- Department of Pharmacology and Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wen-Shan Zhao
- Department of Pharmacology and Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wen-Chao Zhou
- Department of Pharmacology and Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Putuo District Center Hospital, Shanghai University of Chinese Traditional Medicine, Shanghai, China
| | - Xiao-Yang Cheng
- Department of Pharmacology and Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peng Cao
- Jiangsu Province Institute of Traditional Chinese Medicine, Nanjing, Jiangsu, China
| | - Xiang-Yang Lu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Ye Yu
- Department of Pharmacology and Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
- * E-mail:
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Wang L, Chi YF, Yuan ZT, Zhou WC, Yin PH, Zhang XM, Peng W, Cai H. Astragaloside IV inhibits renal tubulointerstitial fibrosis by blocking TGF-β/Smad signaling pathway in vivo and in vitro. Exp Biol Med (Maywood) 2014; 239:1310-24. [PMID: 24879422 DOI: 10.1177/1535370214532597] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Astragaloside IV (AS-IV) is a major active ingredient from Radix astragali, which has been considered as a renoprotective agent; however, its molecular mechanisms are unclear. Thus, we designed to investigate the renoprotective effects and mechanisms of AS-IV in rat model of renal fibrosis induced by unilateral ureteral obstruction (UUO) in vivo and TGF-β1-stimulated rat renal fibroblasts (NRK-49F) in vitro. Sprague-Dawley rats were randomly divided into six groups: sham operation, UUO, UUO/AS-IV (3.3, 10, 33 mg·kg(-1)·d(-1)), and UUO/enalapril (4 mg·kg(-1)·d(-1)). Renal function, tubulointerstitial damage index score, extracellular matrix (ECM) deposition, and the expressions of TGF-β1, connective tissue growth factor (CTGF), α-SMA, fibronectin, collagen I, III, Smad2/3, phosphorylated-Smad2/3, and Smad7 were measured. In addition, the expressions of CTGF, α-SMA, fibronectin, collagen I, III, Smad2/3, phosphorylated-Smad2/3, and Smad7 were measured in TGF-β1-stiumlated NRK-49F cell line. AS-IV significantly decreased UUO-induced renal fibrosis and functional impairment, which are associated with inhibition of TGF-β1, CTGF, α-SMA, and collagen matrix expression, and a decrease in serum creatinine and urea nitrogen. The renoprotective effects of AS-IV on fibrosis were associated with up-regulation of Smad7, thereby blocking up-regulations of TGF-β1, CTGF, and α-SMA, and activation of phosphorylated-Smad2/3. These effects were further conformed in NRK-49F cell line stimulated by TGF-β1. Moreover, knockdown of Smad7 gene in NRK-49F cells was able to prevent AS-IV-induced inhibition to Smad2/3 signaling activation, expression of CTGF, α-SMA, and ECM proteins in response to TGF-β1. Renal tubulointerstitial fibrosis was attenuated by treatment with AS-IV, which was closely related to induction of Smad7, thereby inhibiting TGF-β/Smad signaling.
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Affiliation(s)
- Li Wang
- Laboratory of Renal Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Yang-Feng Chi
- Department of Nephrology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Ze-Ting Yuan
- Experimental Research Center, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Wen-Chao Zhou
- Laboratory of Renal Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Pei-Hao Yin
- Department of Nephrology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Xue-Mei Zhang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Wen Peng
- Laboratory of Renal Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China Department of Nephrology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Hui Cai
- Renal Division, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA Section of Nephrology, Atlanta Veterans Administration Medical Center, Decatur, GA 30322, USA
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Wang L, Chi YF, Yuan ZT, Zhou WC, Yin PH, Zhang XM, Peng W. Astragaloside IV inhibits the up-regulation of Wnt/β-catenin signaling in rats with unilateral ureteral obstruction. Cell Physiol Biochem 2014; 33:1316-28. [PMID: 24802850 DOI: 10.1159/000358699] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2014] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To investigate the effect of Astragaloside IV (AS-IV) on the regulation of the Wnt/β-catenin signaling pathway in rats with unilateral ureteral obstruction (UUO). METHODS Rat renal interstitial fibrosis models were prepared using unilateral ureteral ligation. Rats were randomly divided into sham group, sham group with AS-IV (33mg/kg), unilateral ureteral obstruction group, and unilateral ureteral obstruction group receiving varied doses of AS-IV (3.3, 10, and 33 mg/kg). Immunohistochemical analysis, real-time fluorescence quantitative PCR (FQ-PCR), and western blot were used to detect the expression of genes and proteins associated with the Wnt/β-catenin signaling pathway in renal tissues. RESULTS Levels of Wnt3, Wnt4, and Frizzled gene expression increased significantly in the UUO model; AS-IV was associated with the downregulation of the expression of Wnt3, Wnt4, Frizzled4, p-LRP5, p-LRP6, disheveled, β-catenin, LEF-1, TCF-1, Snail, Jagged 1, Twist, MMP2, and MMP7 proteins in a concentration-dependent manner, while the expression of APC, CK1, and E-cadherin was increased. CONCLUSIONS AS-IV effectively inhibits the up-regulation of proteins in the Wnt/β-catenin signaling pathway in UUO-model rats, indicating its possible inhibitory effects on renal interstitial fibrosis.
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Affiliation(s)
- Li Wang
- Department of Nephrology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Zhou WC, Kolb FL, Bai GH, Domier LL, Yao JB. Effect of individual Sumai 3 chromosomes on resistance to scab spread within spikes and deoxynivalenol accumulation within kernels in wheat. Hereditas 2003; 137:81-9. [PMID: 12627831 DOI: 10.1034/j.1601-5223.2002.01674.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Two sets of substitution lines were developed by crossing individual monosomic lines of Chinese Spring (recipient) with scab (Fusarium graminearum) resistant cultivar Sumai 3 (donor) and then using the monosomics as the recurrent male parent for four backcrosses (without selfing after each backcross). The disomic substitution lines were separated from selfed BC4F2 plants. Chromosome specific SSR markers were analyzed for polymorphism between Sumai 3 and Chinese Spring. Polymorphic markers were used to identify substitution lines for specific chromosomes. Based on the specific SSR markers, chromosome substitutions occurred in thirty-six lines, and six lines segregated alleles from the two parents or were homozygous for the allele from Chinese Spring. These substitution lines were used to evaluate Type II (spread within the head) and Type V (deoxynivalenol accumulation within kernels) scab resistance. The objective was to use the substitution lines to evaluate the effect of individual chromosomes of Sumai 3 on Type 11 and Type V scab resistance in the greenhouse. Significant differences in Type II scab resistance and deoxynivalenol (DON) levels among different Chinese Spring (Sumai 3) substitution lines were detected. Positive chromosome substitution effects on Type II scab resistance were found on chromosomes 2B, 3B. 6B, and 7A from Sumai 3. Chromosomes 3B and 7A also reduced DON accumulation within the kernels, while chromosomes IB, 2D, and 4D from Sumai 3 increased DON concentration. Chromosome 7A from Sumai 3 had the largest effect on resistance to scab spread and DON accumulation. Additional research is in progress on the scab resistance conferred by chromosome 7A.
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Affiliation(s)
- W C Zhou
- Department of Crop Science, University of Illinois, Urbana, IL 61801, USA
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Zhou WC, Xin ZM, Zhang XP, Shen J, Qiu QP. Synthesis and antiprotozoal activities of some new triazine derivatives including a new antitrypanosomal agent: SIPI-1029. Yao Xue Xue Bao 1998; 31:823-30. [PMID: 9863252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Two series of compounds, 1,2-dihydro-2,2-dimethyl-4, 6-diamino-1-(omega-haloalkyloxy)-s-triazines and O, O'-bis (4, 6-diamino-1, 2-dihydro-2, 2-disubstituted-s-triazin-l-yl) alkanediols were synthesized and tested against Plasmodium berghei and Trypanosoma evansi in mice. Most title compounds showed good antimalarial activity and compounds IIc-e showed good antitrypanosomal effect. After further studies on pharmacology, toxicology, pharmacokinetics and efficacy on infected cattles compound IIe (SIPI-1029, T-46) was shown to be a new highly active antitrypanosomal agent with low toxicity and long half life in plasma.
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Affiliation(s)
- W C Zhou
- Shanghai Institute of Pharmaceutical Industry
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Liu JB, Zhou WC, Wang QZ. [Clinical and experimental studies of supplemented sini san in treating chronic brucellosis]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1997; 17:470-2. [PMID: 10322833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
OBJECTIVE To observe the effect of supplemented Sini San (SSNS) in treating chronic Brucellosis (CB). METHODS One hundred and twenty-seven patients were randomly divided into two groups, 76 cases in the treatment group were treated with SSNS and 51 cases in the control group treated with Dioscorea Nipponica Power. The effect of SSNS on mice model of CB was also observed simultaneously. RESULTS The short-term effects were that the total effective rate and markedly effective rate of the treatment were 98.7% and 92.1%, which were better than those of the control group (82.4% and 41.2%) respectively, P < 0.01. The long-term follow-up result of the treatment group also showed its superiority to the control group, the total effective rates of the two groups were 98.7% and 51.0%, and the markedly effective rates were 90.8% and 21.6% respectively (P < 0.01). Animal experiments indicated SSNS has obvious effect of antibiotics and immunomodulation. CONCLUSION SSNS was effective in treating CB, including the long-term follow-up result.
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Affiliation(s)
- J B Liu
- Henan Provincial People's Hospital, Zhengzhou
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Zhu YW, Tao X, Li ZQ, Chen L, Zhou WC. A study on identification of the blunt lethal objects of wood, iron, brick and stone in homicide by SEM and EDAX (energy dispersive analysis x-ray). Nihon Hoigaku Zasshi 1989; 43:227-32. [PMID: 2810894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The qualitative and semiquantitative analysis of residues on wound in homicide cases were done by using scanning electron microscope (SEM) and energy dispersive analysis X-ray system (EDAX) in this paper. It provides a new method of examination for identifying lethal objects in homicidal cases. Our experiment provides some advantages in these examinations, such as saving time, objective conclusion and exact results in practical cases.
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Zhou WC, Dai ZR, Ding YL, Zhang XP. [Studies on antimalarials. XV. Synthesis and antimalarial activities of some bis(2,4-diaminoquinazol-6-yl-substituted aminomethyl) aromatic derivatives]. Yao Xue Xue Bao 1985; 20:536-41. [PMID: 3913278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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