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26 results on '"Jiang, Huichuan"'

4. Photosynthesis and Latex Burst Characteristics in Different Varieties of Rubber Trees (Hevea brasiliensis) under Chilling Stress, Combing Bark Tensile Property and Chemical Component Analysis.

Author

Cheng, Linlin, Jiang, Huichuan, Xie, Guishui, Wang, Jikun, Peng, Wentao, Zhou, Lijun, and An, Feng

Subjects
HEVEA, RUBBER, TREE seedlings, MEMBERSHIP functions (Fuzzy logic), CHEMICAL properties, CHLOROPHYLL spectra, CHLOROPHYLL
Abstract

Rubber trees (Hevea brasiliensis) serve as the primary source of natural rubber. Their native habitat is characterized by warm and humid conditions, so they are particularly sensitive to low temperatures. Under such stress, latex burst can cause severe damage to rubber trees, which is due to the uniqueness of their economically productive parts. In order to establish a correlation between young and mature rubber trees and provide a novel prospective for investigating the mechanisms of latex burst and chilling resistance in rubber trees, the chlorophyll contents, photosynthesis, and chlorophyll fluorescence parameters in four varieties of one-year-old rubber tree seedlings were analyzed under artificially simulated chilling stress. The latex burst characteristics were subsequently recorded. A comprehensive statistical analysis of the chilling-resistance rank was conducted using the membership function method and the combination weighting method. Meanwhile, chemical compositions and tensile properties of barks from two-year-old twigs of mature rubber trees were ascertained. A correlation analysis between chilling resistance, chemical compositions, and tensile properties was performed to identify any interrelationships among them. The results showed that the number and the total area of latex-burst positions in variety Reken628 seedlings were greater than those in other varieties, and the lowest number and total area of latex-burst positions were observed in variety RRIM600 and variety PR107, respectively. With the exception of variety GT1, nectar secretion was noted in all other varieties of rubber tree seedlings under chilling stress. The chilling resistance of the four varieties decreased in the following order: variety GT1 > variety RRIM600 > variety PR107 > variety Reken628. The chilling resistance was strongly (p < 0.001) negatively correlated with cellulose content and acid-insoluble lignin content, respectively. The total area of latex burst was significantly (p < 0.001) and positively correlated with holocellulose content and maximum load, respectively. Furthermore, this study also provides new insights into the mechanism of nectar secretion induced by low temperatures and its association with the chilling resistance of rubber trees. [ABSTRACT FROM AUTHOR]

Published
2024
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24. In vivo SELEX of bone targeting aptamer in prostate cancer bone metastasis model

Author

Chen,Lingxiao, He,Wei, Jiang,Huichuan, Wu,Longxiang, Xiong,Wei, Li,Bolun, Zhou,Zhihua, Qian,Yuna, Chen,Lingxiao, He,Wei, Jiang,Huichuan, Wu,Longxiang, Xiong,Wei, Li,Bolun, Zhou,Zhihua, and Qian,Yuna

Abstract

Lingxiao Chen,1,* Wei He,1,* Huichuan Jiang,1,* Longxiang Wu,1 Wei Xiong,1 Bolun Li,1 Zhihua Zhou,2 Yuna Qian3–5 1Department of Urology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; 2School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China; 3Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Science, Wenzhou, Zhejiang 325001, China; 4School of Ophthalmology and Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; 5Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Chongqing 400045, China *These authors contributed equally to this work Purpose: PB is one of the most severe complications of late stage prostate cancer and negatively impacts patient quality of life. A major challenge for the treatment of cancer bone metastasis is the management of efficient drug delivery to metastatic bone lesion. We aimed to explore the use of aptamers as promising tools to develop a targeted drug delivery system for PBs. Materials and methods: In vivo SELEX was applied to identify bone targeting aptamer in a mouse model with PBs. Results: The aptamer (designated as “PB”) with the highest bone targeting frequency in mice bearing PC3 PB was selected for further analysis. The PB aptamer specifically targeted modulated endothelial cells in response to cancer cells in the bones of mice bearing PC3 PBs. The targeting efficiency of the PB aptamer conjugated to gold particles was verified in vivo. Conclusion: This investigation highlights the promise of in vivo SELEX for the discovery of bone targeting aptamers for use in drug delivery. Keywords: aptamer, tumor endothelial targeting, drug delivery

Published
2018

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