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Shang J, Zhao Q, Yan P, Sun M, Sun H, Liang H, Zhang D, Qian Z, Cui L. Environmental factors influencing potential distribution of Schisandra sphenanthera and its accumulation of medicinal components. Front Plant Sci 2023; 14:1302417. [PMID: 38162305 PMCID: PMC10756911 DOI: 10.3389/fpls.2023.1302417] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 11/28/2023] [Indexed: 01/03/2024]
Abstract
Schisandrae Sphenantherae Fructus (SSF), the dry ripe fruit of Schisandra sphenanthera Rehd. et Wils., is a traditional Chinese medicine with wide application potential. The quality of SSF indicated by the composition and contents of secondary metabolites is closely related to environmental factors, such as regional climate and soil conditions. The aims of this study were to predict the distribution patterns of potentially suitable areas for S. sphenanthera in China and pinpoint the major environmental factors influencing its accumulation of medicinal components. An optimized maximum entropy model was developed and applied under current and future climate scenarios (SSP1-RCP2.6, SSP3-RCP7, and SSP5-RCP8.5). Results show that the total suitable areas for S. sphenanthera (179.58×104 km2) cover 18.71% of China's territory under the current climatic conditions (1981-2010). Poorly, moderately, and highly suitable areas are 119.00×104 km2, 49.61×104 km2, and 10.98×104 km2, respectively. The potentially suitable areas for S. sphenanthera are predicted to shrink and shift westward under the future climatic conditions (2041-2070 and 2071-2100). The areas of low climate impact are located in southern Shaanxi, northwestern Guizhou, southeastern Chongqing, and western Hubei Provinces (or Municipality), which exhibit stable and high suitability under different climate scenarios. The contents of volatile oils, lignans, and polysaccharides in SSF are correlated with various environmental factors. The accumulation of major secondary metabolites is primarily influenced by temperature variation, seasonal precipitation, and annual precipitation. This study depicts the potential distribution of S. sphenanthera in China and its spatial change in the future. Our findings decipher the influence of habitat environment on the geographical distribution and medicinal quality of S. sphenanthera, which could have great implications for natural resource conservation and artificial cultivation.
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Affiliation(s)
- Jingjing Shang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Qian Zhao
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Pengdong Yan
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Mengdi Sun
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Haoxuan Sun
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Huizhen Liang
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Dezhu Zhang
- Shaanxi Panlong Pharmaceutical Group Limited by Share Ltd, Shangluo, Shaanxi, China
| | - Zengqiang Qian
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Langjun Cui
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi’an, China
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Tan Z, Lu D, Yu Y, Li L, Dong W, Xu L, Yang Q, Wan X, Liang H. Genome-Wide Identification and Characterization of the bHLH Gene Family and Its Response to Abiotic Stresses in Carthamus tinctorius. Plants (Basel) 2023; 12:3764. [PMID: 37960120 PMCID: PMC10648185 DOI: 10.3390/plants12213764] [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] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/16/2023] [Accepted: 11/02/2023] [Indexed: 11/15/2023]
Abstract
The basic helix-loop-helix (bHLH) transcription factors possess DNA-binding and dimerization domains and are involved in various biological and physiological processes, such as growth and development, the regulation of secondary metabolites, and stress response. However, the bHLH gene family in C. tinctorius has not been investigated. In this study, we performed a genome-wide identification and analysis of bHLH transcription factors in C. tinctorius. A total of 120 CtbHLH genes were identified, distributed across all 12 chromosomes, and classified into 24 subfamilies based on their phylogenetic relationships. Moreover, the 120 CtbHLH genes were subjected to comprehensive analyses, including protein sequence alignment, evolutionary assessment, motif prediction, and the analysis of promoter cis-acting elements. The promoter region analysis revealed that CtbHLH genes encompass cis-acting elements and were associated with various aspects of plant growth and development, responses to phytohormones, as well as responses to both abiotic and biotic stresses. Expression profiles, sourced from transcriptome databases, indicated distinct expression patterns among these CtbHLH genes, which appeared to be either tissue-specific or specific to certain cultivars. To further explore their functionality, we determined the expression levels of fifteen CtbHLH genes known to harbor motifs related to abiotic and hormone responses. This investigation encompassed treatments with ABA, salt, drought, and MeJA. The results demonstrated substantial variations in the expression patterns of CtbHLH genes in response to these abiotic and hormonal treatments. In summary, our study establishes a solid foundation for future inquiries into the roles and regulatory mechanisms of the CtbHLH gene family.
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Affiliation(s)
- Zhengwei Tan
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Dandan Lu
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Yongliang Yu
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Lei Li
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Wei Dong
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Lanjie Xu
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Qing Yang
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Xiufu Wan
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijng 100700, China;
| | - Huizhen Liang
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
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Liang HZ, Ma YP, Yang LH, Guo QH, Wang SF, Li C. [Clinical characteristics and prognostic implications of RAS mutations in newly diagnosed acute myeloid leukemia with normal karyotype based on next-generation sequencing analysis]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:762-766. [PMID: 38049321 PMCID: PMC10630583 DOI: 10.3760/cma.j.issn.0253-2727.2023.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Indexed: 12/06/2023]
Affiliation(s)
- H Z Liang
- Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Y P Ma
- Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - L H Yang
- Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Q H Guo
- Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - S F Wang
- Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - C Li
- Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan 030001, China
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Zou K, Du Q, Chen X, Tang P, Liang H. MLL1:EZH2 Ratio in Uterine Secretions and Endometrial Receptivity in Patients with Endometriosis. Lab Med 2023; 54:90-97. [PMID: 36094360 DOI: 10.1093/labmed/lmac067] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
OBJECTIVE To establish a novel approach for diagnosing endometriosis (EM) in patients with impaired endometrial receptivity. METHOD Mixed lineage leukemia 1 (MLL1) and enhancer of zeste homolog 2 (EZH2) levels were analyzed. The MLL1:EZH2 ratio in identifying impaired endometrial receptivity has been established and validated. RESULTS In normal endometrial tissue, the MLL1:EZH2 ratio increased significantly in the midsecretory phase, compared with that in the proliferative phase. In the midsecretory phase, the MLL1:EZH2 ratio in endometrial tissues and uterine secretions accurately identifies patients with EM who have impaired endometrial receptivity. In the validation group, the sensitivity and specificity of the MLL1:EZH2 ratio in the uterine secretions of the midsecretory phase, in diagnosing patients EM who have impaired endometrial receptivity, were 100% and 96.55%, respectively. CONCLUSIONS The MLL1:EZH2 ratio in uterine secretions of the midsecretory phase may serve as a marker to diagnose EM in patients with impaired endometrial receptivity.
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Affiliation(s)
- Kehan Zou
- Department of Health, The Maternal and Child Health Hospital of Hunan Province
| | - Qing Du
- Department of Second School of Clinical Medicine, Hunan University of Chinese Medicine
| | - Xin Chen
- Department of Second School of Clinical Medicine, Hunan University of Chinese Medicine
| | - Pingfang Tang
- Department of Second School of Clinical Medicine, Hunan University of Chinese Medicine
| | - Huizhen Liang
- Department of Clinic of Integrated Traditional & Western Medicine, The Maternal and Child Health Hospital of Hunan Province , Changsha, China
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Liang H, Song H, Jiang X, Li C, Ma J. Study on the performance of a vortex mist eliminator for improving the separation efficiency of fine particles. ASIA-PAC J CHEM ENG 2022. [DOI: 10.1002/apj.2757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Huizhen Liang
- College of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao China
| | - Hao Song
- College of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao China
| | - Xiukun Jiang
- College of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao China
| | - Chengzhen Li
- College of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao China
| | - Jian Ma
- College of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao China
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Liang H, Huang C, Zhao B, Song H, Jiang X. Numerical simulation and performance evaluation of cyclone separator with built‐in material for sand removal in gas well. ASIA-PAC J CHEM ENG 2021. [DOI: 10.1002/apj.2648] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Huizhen Liang
- College of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao China
| | - Changcheng Huang
- College of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao China
| | - Binjie Zhao
- College of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao China
| | - Hao Song
- College of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao China
| | - Xiukun Jiang
- College of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao China
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Liang H, Miao W, Huang C, Zhao B, Song H. Gas–liquid two‐phase flow characteristics of the jet vortex drainage gas production tool based on computational fluid dynamics. ASIA-PAC J CHEM ENG 2020. [DOI: 10.1002/apj.2455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Huizhen Liang
- College of Mechanical and Electronic EngineeringShandong University of Science and Technology Qingdao China
| | - Wei Miao
- College of Mechanical and Electronic EngineeringShandong University of Science and Technology Qingdao China
| | - Changcheng Huang
- College of Mechanical and Electronic EngineeringShandong University of Science and Technology Qingdao China
| | - Binjie Zhao
- College of Mechanical and Electronic EngineeringShandong University of Science and Technology Qingdao China
| | - Hao Song
- College of Mechanical and Electronic EngineeringShandong University of Science and Technology Qingdao China
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Liang H, Xu L, Yu Y, Yang H, Dong W, Zhang H. Identification of QTLs with main, epistatic and QTL by environment interaction effects for seed shape and hundred-seed weight in soybean across multiple years. J Genet 2016; 95:475-7. [PMID: 27350695 DOI: 10.1007/s12041-016-0648-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Huizhen Liang
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, People's Republic of China.
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Shanqimuge, Liang H, Zhang C, Shao C, Peng X, Liang L, Su J, Li C. A DGGE Marker-Mediated Fast Monitoring of Bacterial Diversity and Comprehensive Identification of High-Temperature Daqu Starter. J Food Sci 2015; 80:M1519-25. [PMID: 26081439 DOI: 10.1111/1750-3841.12903] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 03/27/2015] [Accepted: 04/15/2015] [Indexed: 11/27/2022]
Abstract
UNLABELLED Bacteria play an essential role in Daqu starter (Daqu) fermentation. The identification of Daqu bacteria was investigated by polymerase chain reaction (PCR) based denaturing gradient gel electrophoresis (DGGE) analysis of the highly variable V3 region of the 16S rRNA gene. Here, we define a novel DGGE marker for the quick identification of Daqu bacteria. A dynamic alteration of the bacterial populations at different stages of fermentation was determined through a 2-y continuous monitoring. The physicochemical parameters of Daqu at different fermentation stages were investigated by weighing, NaOH titration, and HCl hydrolysis together with Fehling reagent methods. Furthermore, infrared spectral analysis using Fourier Transformed Infrared Spectroscopy was performed to determine physicochemical changes of Daqu. Therefore, our studies provide key insight for a comprehensive quality control of Daqu at different fermentation stages using the PCR-DGGE analysis combined with the physicochemical measurement. PRACTICAL APPLICATION Chinese liquor is one of the 6 well-known distilled spirits in the world. High-temperature Daqu acts as an important source of nutrients and of microorganisms in the solid-state fermentation of Chinese Moutai-flavor liquor, which has a critical impact on the final flavor of the liquor. The study identifies a novel DGGE marker and provides an efficient way to identify bacterial diversity in Daqu from different fermentation stages. Importantly, the study defines dynamic changes of the physicochemical parameters and the infrared spectra analysis of Daqu during the fermentation process. These studies will help to (1) establish a standard operation procedure for Daqu production; (2) stabilize manufacturing process for Daqu fermentation and even for liquor brewing.
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Affiliation(s)
- Shanqimuge
- Div. of Nutraceutical Products, Tasly Holding Group, Tianjin, 300040, China
| | - Huizhen Liang
- Div. of Nutraceutical Products, Tasly Holding Group, Tianjin, 300040, China
| | - Changxia Zhang
- Div. of Nutraceutical Products, Tasly Holding Group, Tianjin, 300040, China
| | - Chunfu Shao
- Div. of Nutraceutical Products, Tasly Holding Group, Tianjin, 300040, China
| | - Xiaopei Peng
- Div. of Nutraceutical Products, Tasly Holding Group, Tianjin, 300040, China
| | - Liquan Liang
- Div. of Nutraceutical Products, Tasly Holding Group, Tianjin, 300040, China
| | - Jing Su
- Div. of Nutraceutical Products, Tasly Holding Group, Tianjin, 300040, China
| | - Changwen Li
- Div. of Nutraceutical Products, Tasly Holding Group, Tianjin, 300040, China
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Liang H, Yu Y, Yang H, Xu L, Dong W, Du H, Cui W, Zhang H. Inheritance and QTL mapping of related root traits in soybean at the seedling stage. Theor Appl Genet 2014; 127:2127-37. [PMID: 25145446 DOI: 10.1007/s00122-014-2366-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 07/15/2014] [Indexed: 05/04/2023]
Abstract
KEY MESSAGE This study provides a foundation for further research on root genetic regulation and molecular breeding with emphasis on correlations among root traits to ensure robust root growth and well-developed root systems. A set of 447 recombinant inbred lines (RILs) derived from a cross between Jingdou23 (cultivar, female parent) and ZDD2315 (semi-wild, male parent) were used to analyze inheritance and detect QTLs related to root traits at the seedling stage using major gene plus polygene mixed inheritance analysis and composite interval mapping. The results showed that maximum root length (MRL) was controlled by three equivalent major genes, lateral root number (LRN) was controlled by two overlapping major genes, root weight (RW) and volume (RV) were controlled by four equivalent major genes. Hypocotyl length (HL) was controlled by four additive main genes, and hypocotyl weight (HW) was controlled by four additive and additive × additive epistatic, major genes; however, polygene effects were not detected in these traits. Shoot weight (SW) was controlled by multi-gene effects, but major gene effects were not detected. Twenty-four QTLs for MRL, LRN, RW, RV, SW, HL, HW were mapped on LG A1 (chromosome 5), LG A2 (chromosome 8), LG B1 (chromosome 11), LG B2 (chromosome 14), LG C2 (chromosome 6), LG D1b (chromosome 2), LG F_1 (chromosome 13), LG G (chromosome 18), LG H_1 (chromosome 12), LG H_2 (chromosome 12), LG I (chromosome 20), LG K_2 (chromosome 9), LG L (chromosome 19), LG M (chromosome 7), LG N (chromosome 3), LG O (chromosome 10), separately. Root traits were shown to have complex genetic mechanisms at the seedling stage, SW was controlled by multi-gene effects, and the other six traits were controlled by major gene effects. It is concluded that correlations among root traits must be considered to improve the development of beneficial root traits.
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Affiliation(s)
- Huizhen Liang
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, People's Republic of China,
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Zhao PW, Peng J, Liang HZ, Ring P, Meng J. Antimagnetic rotation band in nuclei: a microscopic description. Phys Rev Lett 2011; 107:122501. [PMID: 22026766 DOI: 10.1103/physrevlett.107.122501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Indexed: 05/31/2023]
Abstract
Covariant density functional theory and the tilted axis cranking method are used to investigate antimagnetic rotation (AMR) in nuclei for the first time in a fully self-consistent and microscopic way. The experimental spectrum as well as the B(E2) values of the recently observed AMR band in (105)Cd are reproduced very well. This gives a further strong hint that AMR is realized in specific bands in nuclei.
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Affiliation(s)
- P W Zhao
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
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Liu RB, Zhou XH, Wang JN, Liang HZ, Li XX, Wu ZH, Ye JL, Wang SM. [Expression of estrogen receptor, progesterone receptor, and human epithelial growth factor receptor 2 in breast cancer and the significance thereof: analysis of 910 cases]. Zhonghua Yi Xue Za Zhi 2008; 88:3397-3400. [PMID: 19159568] [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: 05/27/2023]
Abstract
OBJECTIVE To investigate the expression of estrogen receptor (ER), progesterone receptor (PR), and human epithelial growth factor receptor 2 (HER2) in breast cancer, and to explore their correlation with the age of patient, and size, clinic stage, and lymph node metastasis of the tumor. METHODS The data of 910 breast cancer, 89.4% of invasive ductal carcinoma, 1.7% of invasive lobular carcinoma, 44 cases 5% of ductal carcinoma in situ, and 4.9% of other pathologic types, 29.9% being less than 2 cm, 45.6% being 2-5 cm, and 24.5% bigger than 5 cm in size, 54.2% without metastasis in lymph node, 25.5% with metastasis in 1-3 lymph nodes, and 20.3% with metastasis in more than 3 lymph nodes respectively, were analyzed retrospectively. Immunohistochemistry was used to detect the expression of ER, PR, and HER2. RESULTS The ER negative expression rate was 33.0%, and PR negative expression rate was 27.4%, and HER2 overexpression rate was 20.3%. The possibility of lymph node metastasis decreased along with the increase of age (P < 0.001). Tumor size was negatively correlated with the expression of ER and PR (both P < 0.001), and positively correlated with the expression of HER2 (P < 0.001). There was no significant difference between the situation of lymph node metastasis and the expression of ER, PR and HER2 in primary tumors. CONCLUSION As good prognostic markers of breast invasive ductal cancer, ER and PR are negatively correlated with the HER2 expression, as a worse prognostic marker. ER/PR positive or HER2 negative tumors are morel likely to be diagnosed at earlier stages.
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Affiliation(s)
- Ren-bin Liu
- Department of Breast Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
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Xie J, Qi S, Xu Y, Tang J, Li T, Liu X, Shu B, Liang H, Huang B. Effects of basic fibroblast growth factors on hypertrophic scarring in a rabbit ear model. J Cutan Med Surg 2008; 12:155-62. [PMID: 18627695 DOI: 10.2310/7750.2008.07041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Basic fibroblast growth factor (bFGF) was clinically proven to accelerate acute and chronic wound healing. Accelerated wound healing may lead to improved scarring. These studies suggested a possible antiscarring effect of bFGF during wound healing. Little was known about the precise pathologic mechanisms of bFGF on scarring formation. AIMS The aim of this study was to investigate the effect of bFGF on hypertrophic scarring in a rabbit ear model and clarify the mechanism of bFGF on scar treatment. METHODS The rabbit model of hypertrophic scarring was created and received of a low- or high-dose topical treatment three times daily for 1, 2, or 3 months. Then we examined the changes in the macroscopic and histopathologic characteristics of the scars. The expression of collagen, alpha(1)beta(2) integrin, and matrix metalloproteinase 1 (MMP-1) was studied by applying reverse transcriptase-polymerase chain reaction, enzyme-linked immunosorbent assay, and Western blotting. RESULT High-dose bFGF remarkably alleviated the scar in the rabbit ear model and decreased collagen type I expression. Further study revealed that bFGF remarkably enhanced MMP-1 and decreased alpha(1)beta(2) integrin expression. CONCLUSION This study supports the hypothesis that bFGF exerted a net negative effect on collagen remodeling, therefore suggesting a potential antiscarring role.
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Affiliation(s)
- Julin Xie
- Department of Burns, The First Affiliated Hospital, and Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, PR China
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Hua YP, Li SQ, Lai JM, Liang LJ, Peng BG, Liang HZ, Huang JF. [Changes in TGF-beta1/Smads signaling pathway in rats with chemical hepatocarcinogenesis]. Nan Fang Yi Ke Da Xue Xue Bao 2008; 28:1848-1852. [PMID: 18971187] [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: 05/27/2023]
Abstract
OBJECTIVE To investigate the changes in transforming growth factor beta 1 (TGF-beta1)/Smads signaling pathway in rats with chemical hepatocarcinogenesis. METHODS Fresh diethylnitrosamine (DENA) solution was administered in SD rats to induce hepatocellular carcinoma (HCC). The protein expressions of TGF-beta1, phosphorylated Smad2, Smad4 and Smad7 were detected in these rats with immunohistochemistry, and the mRNA expression of Smad4 was evaluated with RT-PCR. RESULTS Cirrhotic nodules occurred in the rats 8 weeks after DENA treatment, and HCC nodules were found 16 weeks after the treatment. In the normal liver tissue, very low levels of TGF-beta1 and Smad4 expressions, low Smad7 expression and high phosphorylated Smad2 expression were detected. The development of liver cirrhosis was accompanied by increased expressions of TGF-beta1, Smad4 and Smad7 but at 8 weeks after DENA treatment, the expression of phosphorylated Smad2 was significantly decreased, followed then by gradual increment till nearly the normal level. Twenty-two weeks after DENA treatment, Smad4 expression in liver tissue decreased markedly as compared with the levels at 8 and 16 weeks. The expressions of Smad4 and phosphorylated Smad2 in the HCC tissue was significantly lower than those in normal liver tissue. CONCLUSION Hepatocarcinogenesis involves very complex mechanisms, can can be related partially to the decreased Smad4 and phosphorylated Smad2 expression and TGFbeta1 and Smad7 overexpression in advanced stage of liver cirrhosis.
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Affiliation(s)
- Yun-peng Hua
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China.
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Chen XD, Li TZ, Qi SH, Xie JL, Xu YB, Pan S, Yuan JS, Zhang T, Liang HZ. [Study on the regular pattern of the distribution of skin epidermal stem cells in the different parts of a healthy human body]. Zhonghua Shao Shang Za Zhi 2006; 22:53-6. [PMID: 16680964] [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: 05/09/2023]
Abstract
OBJECTIVE To investigate the regular pattern of the distribution of skin epidermal stem cells (ESCs) in the different parts of a healthy human body, and to evaluate the feasibility of the identification of ESCs by P63 and CD29 with single and double labeling. METHODS Full-thickness skin samples from 21 parts (including scalp, dorsum of foot, sole of foot, pubic region, and scrotum) of 5 healthy persons were harvested for the study. Immunohistochemistry method with biotin-streptavidin-horseradish peroxidase (SP) was employed with P63 and CD29 as the first antibody to carry out single and double labeling. The staining results were subjected to image analysis. The distribution of the ESCs in the skin from the above parts was observed and expressed as positive unit (PU) value. RESULTS It was found by P63 single labeling and P63 and CD29 double labeling that the PU value in the dorsum of foot was the lowest while that in the scalp was the highest among all the parts of a healthy body. It was also found by CD29 single labeling that the PU value in the dorsum of foot was the lowest [(11.9 +/- 1.5)%] while highest in the scalp [(29.1 +/- 5.0)%]. The PU value in the hairy region of a human body was evidently higher than that in the non-hairy region (P < 0.01), when examined by P63 and CD29 single and double labeling. But there was no difference in the PU values between the trunk and limbs by means of P63 and CD29 single and double labeling (P > 0.05). CONCLUSION There are more ESCs in the skin from the scalp, mons pubis and scrotum than other parts of the body. Single P63 or CD29 labeling exhibits higher sensitivity but lower specificity in the identification of ESCs. While the double labeling method exhibits higher specificity but lower sensitivity. Above all, it seems that the double labeling may be a simple and effective method for the identification of ESCs.
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Affiliation(s)
- Xiao-dong Chen
- Department of Burns, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, PR China
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Zhang T, Li TZ, Xu YB, Qi SH, Liang HZ, Xie JL, Chen XD, Zheng SS. [Influence of aerosols on the expression of cyclin B1, cyclin C and proliferating cell nuclear antigen in wound tissue healing of burned rat models]. Zhonghua Wai Ke Za Zhi 2005; 43:1280-3. [PMID: 16271231] [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: 05/05/2023]
Abstract
OBJECTIVE To investigate the influence of aerosols on the expression of cyclin B(1), cyclin C and proliferating cell nuclear antigen (PCNA) in wound tissue healing of burned rat models. METHODS Sprague Dawley (SD) rats were inflicted as the deep partial thickness burn models. Rats were randomly divided into experimental group and control group. The experimental group were treated with aerosols. Samples were collected in 1 approximately 10 postburn days. Immunohistochemistry and image analysis methods were conducted to examine the expression of cyclin B(1), cyclin C and PCNA in both experimental and control groups. RESULTS The expression of cyclin C in experimental group was detected in nucleus of skin basal cell on the second postburn day, increased evidently at the fifth days and sustained at high expression level up to the tenth days after treatment. The expression of cyclin C in experimental group was significantly higher than control group (P < 0.05). The expression of PCNA was first observed in skin basal cell nucleus and hair follicle cell nucleus in both experimental and control group on the third postburn day. The expression of PCNA increased evidently at the fifth days in experimental after treatment and that increased evidently at the seventh days in control group, which showed there were lots of active proliferation cell. And the difference of the expression of PCNA between experimental and control group was significant (P < 0.01). The expression of cyclin B(1) was detected in nucleus and cytoplasm of skin basal cell in both groups on the third postburn day, and no difference between the experimental and control group (P > 0.05). CONCLUSIONS Aerosols can up-regulate the expression of cyclin C and PCNA in skin basal cell nucleus. Therefore the aerosols can accelerate wound tissue healing.
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Affiliation(s)
- Tao Zhang
- Department of Burns, First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
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Wang Y, Wang R, Qiao H, Li JY, Peng TS, Li Y, Zhang M, Liang HZ, Qiu JS. [Targeted inhibition of vascular endothelial growth factor (VEGF) expression in human osteosarcoma cell line by antisense VEGF165 cDNA promoted by hypoxia reaction element]. Zhonghua Bing Li Xue Za Zhi 2005; 34:588-91. [PMID: 16468311] [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: 05/06/2023]
Abstract
OBJECTIVE Utilizing the hypoxia inducible factor 1/hypoxia reaction element (HIF-1/ HRE) gene regulation system to construct antisense vascular endothelial growth factor (VEGF165) cDNA eukaryotic expression vector promoted by HRE, and investigate its targeted inhibiting VEGF expression of osteosarcoma cells in hypoxia environment. METHODS Eukaryotic expression plasmid with HRE promoter was constructed containing luciferase reporter gene and antisense VEGF165 cDNA by using PCR and recombinant DNA techniques. The recombinant vectors were transfected into osteosarcoma cells with lipofectin method. Hypoxia-inducible reporter gene expression was determined by liquid scintillation analyzer and the expression of VEGF protein was detected by ELISA method. RESULTS The eukaryotic expression plasmid containing antisense VEGF165 and luciferase promoted by HRE was constructed successfully. After being transferred into MG63 cells, luciferase expression was increased 3.5 x 10(2) times and VEGF protein expression decreased 45% under hypoxia condition. CONCLUSION Antisense VEGF165 cDNA expression, efficiently realized by HRE promoter under hypoxia condition, provides an experimental basis for targeted antiangiogenesis of tumors.
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Affiliation(s)
- Yan Wang
- Department of Pathology, Sun Yat-sen Medical College, Sun Yat-sen University, Guangzhou 510089, China.
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Peng TS, Qiu JS, Li Z, Zhang M, Liang HZ. [The role of CD44 in the proliferation, adhesiveness and invasiveness of osteosarcoma cell lines]. Zhonghua Bing Li Xue Za Zhi 2005; 34:362-6. [PMID: 16185508] [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: 05/04/2023]
Abstract
OBJECTIVE To study the influence of CD44 a cell-matrix adhesion molecule on the proliferation, adhesiveness and invasiveness of osteosarcoma cell lines, in order to investigate the growth and invasion mechanism of osteosarcoma. METHODS Three osteosarcoma cell lines MG-63, HOS and U2-OS were routinely cultured. Flow cytometry and Western blot analysis were used for detecting the positive rates and relative amount of CD44 protein in the three cell lines. RT-PCR method was also used to compare the differences in the expression of CD44 mRNA among the 3 cell lines. Then, MTT method, adhesion detection, and Microcon-migration assay were used to detect the changes of the cells' proliferation rate, adhesive and invasive abilities after blocking the role of CD44 by using a special neutralizing antibody. RESULTS The results of flow cytometry showed that the percentage of CD44 positive cells were both over 99% in HOS and U2-OS, while that in MG-63 was only (2.10 +/- 0.46)%. The average fluorescence density of CD44 in HOS was significantly higher than in U2-OS. Western blot also showed that the relative content of CD44 protein in HOS was notably higher than that in U2-OS, while CD44 was negatively expressed in MG-63. The expression of CD44 mRNA was significantly lower in MG-63 than in both HOS and U2-OS, which were consistent with the expression of CD44 protein. The proliferation rates and adhesive abilities of MG-63 and HOS have no significant difference, but both were significantly higher than that of U2-OS. The invasive abilities of HOS was dramatically higher than MG-63 and U2-OS. After the role of CD44 was blocked by anti-CD44 neutralizing antibody, the proliferation rates of the 3 cell lines did not change significantly. While the HOS and MG-63 adhesion indices decreased dramatically (P < 0.05), the invasive abilities of HOS and U2-OS also decreased notably (P < 0.01). CONCLUSIONS CD44 could promote the adhesiveness and invasiveness of osteosarcoma cell line HOS. CD44 may take part in promoting the process of U2-OS invasion and the adhesion of MG-63. On the other hand, CD44 could not affect the osteosarcoma cell proliferation rates.
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Affiliation(s)
- Ting-sheng Peng
- Department of Pathology, Sun Yat-sen Medical College, Sun Yat-sen University, Guangzhou 510080, China.
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Hua YP, Huang JF, Liang LJ, Li SQ, Lai JM, Liang HZ. [The study of inhibition effect of octreotide on the growth of hepatocellular carcinoma xenografts in situ in nude mice]. Zhonghua Wai Ke Za Zhi 2005; 43:721-5. [PMID: 16008961] [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: 05/03/2023]
Abstract
OBJECTIVE To observe the effect of octreotide (OCT) on inhibiting hepatocellular carcinoma (HCC) and investigate its mechanisms. METHODS Nude mice bearing xenografts in situ were treated with OCT or saline control for 7 weeks since tumor implantation. The immunohistochemistry for somatostatin receptor 2 (SSTR2), cMet, transforming growth factor beta1 (TGFbeta1), phospho-Smad2, Smad4 and Smad7 was performed. SSTR2 and Smad4 mRNA expression was measured by semi-quantitative RT-PCR. RESULTS After OCT treatment, the mean tumor weight in mice given OCT (0.17 +/- 0.14 g) was significantly lower than that of the control group (0.53 +/- 0.06 g). The inhibition rate of tumor was 67.9%. mRNA and protein expression of SSTR2, Smad4 in tumor cells of the treatment group were significantly more than that of the control group. cMet expression in OCT group was remarkably lower than that in control group. Between two groups, the expression of TGFbeta1, phospho-Smad2 and Smad7 were not remarkably different. In addition, phospho-Smad2 expression in HCC was significantly less than that of the normal hepatic cell. CONCLUSION OCT can inhibit the growth of HCC xenografts markedly. The mechanisms of OCT-induced inhibition effect may be related to up-regulating SSTR2 expression, down-regulating cMet, and recovering the function of TGFbeta/Smads-induced antitumor. In addition, the decreased expression of phospho-Smad2 may be an important feature of Bel7402 cells.
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Affiliation(s)
- Yun-peng Hua
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Zhongshan University, Guangzhou 510080, China
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Li Z, Ren Y, Lin SX, Liang YJ, Liang HZ. Association of E-cadherin and beta-catenin with metastasis in nasopharyngeal carcinoma. Chin Med J (Engl) 2004; 117:1232-9. [PMID: 15361301] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023] Open
Abstract
BACKGROUND This study was designed to detect methylation of E-cadherin gene promoter and gene mutation of beta-catenin in exon 3 and their expression of protein and mRNA in primary tumor and lymph node metastatic tumor of nasopharyngeal carcinoma (NPC), and investigate the mechanism of invasion and metastasis of neoplastic cells in NPC. METHODS Fourty-two fresh biopsy samples were taken from untreated NPC patients at the Affiliated Hospital of Sun Yat-sen Medical College, Sun Yat-sen University, Guangzhou, China during the period of 1999-2002. Among them 21 were taken from primary tumors and the other 21 from lymph node metastatic tumors. The gene promoter methylation of E-cadherin was detected by methylation-specific PCR (MSP). The mutation in exon 3 of beta-catenin was detected by direct sequencing analysis. RT-PCR, Western blot and immunohistochemical staining were used to detect the mRNA and protein expression patterns in both primary and metastatic tumors of NPC. RESULTS Down-regulated expression of E-cadherin in metastatic tumor was compared with that in primary tumor. Reduced expression of E-cadherin was found to be correlated with lymph node metastatic tumor of NPC (P = 0.004); but there was no obvious correlation between primary and metastatic tumors in the expression of beta-catenin (P = 0.698). The mRNA expression level of E-cadherin in metastatic tumors decreased significantly compared with that in primary tumors. However, little change was observed in the mRNA level of beta-catenin in different tumor tissues. Only 4 samples (19.1%) displayed gene promoter methylation of E-cadherin in primary tumor and 10 samples (47.6%) showed methylated form of E-cadherin. The gene promoter methylation of E-cadherin was more common in metastatic tumor than in primary tumor of NPC (P = 0.024). Only 2 (4.76%) of the 42 samples showed mutations in exon 3 of beta-catenin at 41 (T41A, ACC-->GCC) and codon 47 (S47T, AGT-->ACT). The cytoplasmic and nuclear expression of beta-catenin in tumor was not found in any samples of NPC. CONCLUSIONS The results suggest that the downregulation of E-cadherin results from the gene promoter aberrant methylation of E-cadherin and that the methylation of E-cadherin plays an important role in invasion and metastasis of tumor cells in NPC. However, beta-catenin mutation is an infrequent event in NPC, and beta-catenin is not a critical factor influencing the invasion and metastasis of tumor cells in NPC.
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Affiliation(s)
- Zhi Li
- Department of Pathology, Sun Yat-sen Medical College, Sun Yat-sen University, Guangzhou 510089, China
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Li Z, Ren Y, Wu QC, Lin SX, Liang YJ, Liang HZ. Macrophage migration inhibitory factor enhances neoplastic cell invasion by inducing the expression of matrix metalloproteinase 9 and interleukin-8 in nasopharyngeal carcinoma cell lines. Chin Med J (Engl) 2004; 117:107-14. [PMID: 14733785] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023] Open
Abstract
BACKGROUND Nasopharyngeal carcinoma (NPC) shows highly invasive and metastatic features. This study aims to investigate macrophage migration inhibitory factor (MIF)-induced invasion of NPC cells in vitro and the effects on matrix metalloproteinases (MMPs) and interleukin-8 (IL-8), and to study the mechanism of tumor cell invasion and metastasis in the early stage of NPC. METHODS Two nasopharyngeal carcinoma cell lines, CNE-1 and CNE-2, were adopted in this study. The NPC cell invasion and migration were evaluated by microinvasion assay. The variation of expression percentages of MMP2- or MMP9-positive cells was detected by flow cytometry in two cell lines with or without MIF treatment. Western blotting and RT-PCR were used to assay the protein and mRNA expressions of MMP2 and MMP9. The IL-8 concentration secreted by NPC cells was compared with the cells with different treatments using ELISA. RESULTS After treating with MIF for 48 hours, the cell numbers of CNE-1 and CNE-2 which went through the 8-microm filter membrane were increased. Compared with non-MIF treated NPC cells, significant difference could be found both in CNE-1 (P = 0.005) and CNE-2 cells (P = 0.001). The percentages of MMP9-positive cells were significantly increased in both CNE-1 [from (28.5 +/- 2.5)% to (82.4 +/- 3.5)%, P = 0.001] and CNE-2 [from (32.8 +/- 3.5)% to (86.1 +/- 1.6)%, P = 0.002]. The relative intensity of MMP9 protein expression was also enhanced in both cell lines (CNE-1: from 83.1 +/- 6.0 to 242.9 +/- 22.9, P = 0.002; CNE-2: from 84.4 +/- 4.3 to 278.9 +/- 29.7, P = 0.003). Correspondingly, the increased MMP9 mRNA expression level was significantly detectable in both cell lines. The concentration of IL-8 in the supernatant of CNE-2 was higher [(1201.8 +/- 593.3) pg/ml] after treatment. It was also remarkably higher than that in the supernatant of CNE-2 without treatment (P = 0.026). However, there was no significant difference in the concentration variation of IL-8 in CNE-1 (P = 0.581), while the IL-8 mRNA level was only enhanced in CNE-2. CONCLUSIONS MIF can induce potent invasion of NPC cell lines in vitro, and the infiltrating lymphocytes in NPC might be responsible for the invasion and metastasis of tumor cells. MIF cytokine which is secreted by these infiltrating lymphocytes might contribute to the invasion as well as metastasis of NPC in the early stages by induction of MMP9 and IL-8 in an indirect pathway.
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Affiliation(s)
- Zhi Li
- Department of Pathology, Sun Yat-sen Medical College, Sun Yat-sen University, Guangzhou 510089, China.
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Xie JL, Li TZ, Qi SH, Bian HN, Cheng JD, Xu YB, Liang HZ. [A preliminary study on the identification and distribution of epidermal stem cells in different degrees of burn wounds in scalded rats]. Zhonghua Shao Shang Za Zhi 2003; 19:344-6. [PMID: 14761642] [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: 04/28/2023]
Abstract
OBJECTIVE To investigate the distribution of epidermal stem cells (ESCs) in different degrees of burn wounds in scalded rats. METHODS Thirty-two Sprague-Dawley (SD) rats were employed in the study. First degree (I), shallow (shallow II) and deep partial thickness (deep II) and full thickness burn wounds (III) were created on the rat skin. Burn wound samples were harvested at 24 postburn hours (PBHs) from all the wounds and were processed to tissue slices. The tissue slices were stained by immunohistochemistry technique. The expression and distribution of ESCs in different degrees of burn wounds were observed with integrins alpha 2 beta 1 and keratin 10 (K10) as first antibodies. RESULTS K10 positive cells were found to distribute in the strata spinosum, granulosum and lucidum in the first degree burn wound (I) with large amounts of integrins alpha 2 beta 1 positive cells in the residual basal layer and skin appendages (hair follicles) in shallow partial thickness burn wound (shallow II degree), and there were less integrins alpha 2 beta 1 positive cells in the remaining skin appendages in deep dermis in deep partial thickness burn wound (deep II degree). Finally, integrins alpha 2 beta 1 positive cells were sparsely found in the III degree burn wound. CONCLUSION The distribution of ESCs in burn wounds was closely related to the depth of burn wound. The residual ESCs might be the origin of burn wound regeneration and reepithelization.
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Affiliation(s)
- Ju-lin Xie
- Department of Burns, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, P.R. China
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Shen R, Li TZ, Qi SH, Liang HZ, Xu YB, Xie JL, Wu YF, Feng XS, Du YJ. [A research of endothelial cell-targeted therapy for cure of hypertrophic scar]. Zhonghua Zheng Xing Wai Ke Za Zhi 2003; 19:254-7. [PMID: 14628410] [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: 04/27/2023]
Abstract
OBJECTIVE To investigate the feasibility of endothelial cell-targeted therapy to cure post-burn hypertrophic scar. METHODS A hypertrophic scar animal model was made. Intralesional injecting of VEGF monoclonal antibody was performed for three weeks. The changes of scar in volume and morphology were observed. RESULTS 1. The volume of scar decreased. 2. The number of the capillary, the amount of collagen I and collagen III decreased. 3. Transmission electron microscope examinations demonstrated many dead or apoptotic fibroblasts and endothelial cells. Fibrocytes were seen relatively common. CONCLUSION VEGF induces the growth and development of hypertrophic scar in that it induces excessive and uncontrollable angiogenesis, which favors excessive collagen synthesis. Endothelial cell-targeted therapy may be a promising method to cure post-burn hypertrophic scar.
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Affiliation(s)
- Rui Shen
- Department of Burn, First Affiliated Hospital, Sun Yatsen University of Medical Sciences, Guangzhou 510080, China
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Peng TS, Qiu JS, Wu HX, Liang HZ, Luo CQ. [Expressions of CD44s, MMP-9, and Ki-67: possible association with invasion, metastasis, and recurrence of osteosarcoma]. Ai Zheng 2002; 21:745-50. [PMID: 12479099] [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: 04/19/2023]
Abstract
BACKGROUND & OBJECTIVE Recent research had showed that tumor cell adhesion molecular CD44 and matrix metalloproteinases (MMP) were expressed strongly in many tumors, and was associated closely with invasion and metastasis of the tumors. Ki-67 was one of the proliferative markers, which indicated the growth rate of tumor cells. However, the relationship among these markers and the invasion, metastasis, and recurrence of osteosarcoma was unclear yet. In this research the authors studied the expression of standard-type CD44(CD44s), MMP-9, and Ki-67 in osteosarcoma, and their relation to the invasion, metastasis, and recurrence of the tumor. METHODS Immunohistochemistry staining(SP method) was used to detect CD44s, MMP-9, and Ki-67 in cases of osteosarcoma. Bone benign disease or normal connective tissue were used as the control. The results were treated with semi-quantitative method and analyzed by using non-parameter rank sum test. RESULTS The positive rates of CD44s, MMP-9, and Ki-67 in osteosarcoma were 71.0%, 75.8%, and 35.5%, respectively, which were significantly higher than that in control tissue. The positive rate of Ki-67 in recurrent osteosarcoma was 81.8%, which was significantly higher than that in primary tumor. CD44s and Ki-67 positive rates were 88.9% and 66.7% respectively in osteosarcoma with lung metastasis, which were both significantly higher than that in osteosarcoma without lung metastasis. In poorly differentiated osteosarcoma positive rates of CD44s and MMP-9 were 76.3% and 79.7%, respectively, which were significantly higher than that in well differentiated tumor. Spearman correlation analysis proved that the expression of CD44s, MMP-9, and Ki-67 had significant relation to another. CONCLUSIONS Increase of CD44s, MMP-9, and Ki-67 were involved in the growth and local invasion of osteosarcoma. The recurrence of osteosarcoma was associated with the proliferative rate of tumor cells. Whether there were early lung metastasis or not was affected by the amount of CD44s and the proliferative rate of the tumor cell. The poorer differentiation of osteosarcoma cells, the higher level of CD44s and MMP-9.
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Affiliation(s)
- Ting-sheng Peng
- Department of Pathology, Sun Yat-sen Medical College, Sun Yat-sen University, Guangzhou 510080, P. R. China
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Li XY, Tong LM, Jin YF, Cao CY, Liang HZ, Wang JF, Zhu PP, Wang JY. [Immunopotentiating effects of oxalysine]. Zhongguo Yao Li Xue Bao 1987; 8:173-7. [PMID: 2959008] [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: 01/03/2023]
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Li XY, Liang HZ. [Effects of artemether on red blood cell immunity in malaria]. Zhongguo Yao Li Xue Bao 1986; 7:471-5. [PMID: 2954426] [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: 01/03/2023]
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Liang HZ, Chen KJ. [Clinical effects of ginseng injection and a ginseng combination injection on the aged patients with heart failure as evaluated by a computerized nuclear stethoscope]. Zhong Xi Yi Jie He Za Zhi 1986; 6:13-6, 2. [PMID: 2942271] [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: 01/03/2023]
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Jin YF, Liang HZ, Cao CY, Wang ZW, Shu RS, Li XY. [Immunological activity of bagasse polysaccharides (author's transl)]. Zhongguo Yao Li Xue Bao 1981; 2:269-275. [PMID: 6462029] [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: 05/21/2023]
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Zhou JX, Liang HZ, Xu B. [Antitumor action of phenylalanine derivatives of mechlorethamine (author's transl)]. Zhongguo Yao Li Xue Bao 1981; 2:121-128. [PMID: 6461211] [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: 05/21/2023]
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