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- 저자 : Xu Yanqin (검색결과 3 건)
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Zhou Yin,Xu Zheng,Chen Xu,Zhou Junjiang,Wang Songtai,Xu Yanqin 한국식물생명공학회 2023 Plant biotechnology reports Vol.17 No.2
Oriental orchids of the genus Cymbidium are famous for their flower fragrance and have great value in the horticultural market. To investigate the regulatory mechanisms of fragrance biosynthesis in Cymbidium faberi, the promoters of the CfAOC and CfJMT genes in the methyl jasmonate biosynthesis pathway were cloned and analyzed. Notably, the CfAOC promoter was transcriptionally active in all vegetative organs, which was not true for the CfJMT promoter, indicating that the latter is tissue-specific for the flowers of C. faberi. The dual-luciferase assay showed that the fragment between –629 and –1038 nt of the CfAOC promoter, as well as the fragment between –960 and –1121 nt of the CfJMT promoter, displayed specific interaction with the CfbHLH transcription factors. These results provide a theoretical basis for the genetic modification of the flower fragrance of Cymbidium based on specific CfbHLH transcription factors.
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Research progress on hydrogel-based drug therapy in melanoma immunotherapy
( Wei He ),( Yanqin Zhang ),( Yi Qu ),( Mengmeng Liu ),( Guodong Li ),( Luxiang Pan ),( Xinyao Xu ),( Gege Shi ),( Qiang Hao ),( Fen Liu ),( Yuan Gao ) 생화학분자생물학회 2024 BMB Reports Vol.57 No.2
Melanoma is one of the most aggressive skin tumors, and conventional treatment modalities are not effective in treating advanced melanoma. Although immunotherapy is an effective treatment for melanoma, it has disadvantages, such as a poor response rate and serious systemic immune-related toxic side effects. The main solution to this problem is the use of biological materials such as hydrogels to reduce these side effects and amplify the immune killing effect against tumor cells. Hydrogels have great advantages as local slow-release drug carriers, including the ability to deliver antitumor drugs directly to the tumor site, enhance the local drug concentration in tumor tissue, reduce systemic drug distribution and exhibit good degradability. Despite these advantages, there has been limited research on the application of hydrogels in melanoma treatment. Therefore, this article provides a comprehensive review of the potential application of hydrogels in melanoma immunotherapy. Hydrogels can serve as carriers for sustained drug delivery, enabling the targeted and localized delivery of drugs with minimal systemic side effects. This approach has the potential to improve the efficacy of immunotherapy for melanoma. Thus, the use of hydrogels as drug delivery vehicles for melanoma immunotherapy has great potential and warrants further exploration.
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Xing Lei,Li Yanqin,Li Wenhao,Liu Rong,Geng Yuanming,Ma Weiqun,Qiao Yu,Li Jianwen,Lv Yingtao,Fang Ying,Xu Pingping 한국조직공학과 재생의학회 2022 조직공학과 재생의학 Vol.19 No.6
BACKGROUND: The study aims to correlate osteogenesis with autophagy during the mineralization induction of MC3T3-e1 through exploring the expression of runt-related transcription factor 2 (RUNX2)/lysosomal-associated transmembrane protein 5 (LAMPT5). METHODS: The induction of mineralization in MC3T3-e1 was followed by detecting the expressions of osteogenesisrelated indexes such as RUNX2, alkaline phosphatase (ALP), osteocalcin (OCN), and LAPTM5 using RT-qPCR and Western blot from 0 to 14 days. Transmission electron microscope was utilised in visualizing the alterations of autophagosomes, which was followed by immunofluorescence detecting the subcellular localization of autophagy-related index sequestosome 1 (P62) and microtubule-associated protein 1 light 3 (LC3) protein and scrutinising the expression of P62 mRNA and P62 and LC3 proteins. RESULTS: Induction of MC3T3-e1 mineralization demonstrated an increased expression of osteogenesis-related indicators such as RUNX2, ALP, OCN, and LAPTM5 (p\0.05), as evident from the results of RT-qPCR and Western blot. Meanwhile, the expression of autophagosomes increased one day after mineralization induction and then experienced a gradual decline, and enhanced expression of LC3 protein was noted on days 1–2 of mineralization induction but was then followed by a corresponding reduce. In contrast, a continuous increase was reported in the expression of P62 mRNA and protein, respectively (p\0.05). Up- and down-regulating RUNX2/LAPTM5 expression alone confirmed the aforementioned results. CONCLUSION: It was therefore proposed that RUNX2 may be responsible for an early increase and then a gradual decrease in LAPTM5-mediated autophagy through the regulation of its high expression. Meanwhile, increased LAPTM5 expression in osteogenic mineralization presumed that RUNX2/LAPTM5 promoted autophagy and osteogenic expression, which may play a bridging role in the regulation of autophagy and osteogenesis.
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