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Zhang M, Zhao R, Huang K, Huang S, Wang H, Wei Z, Li Z, Bian M, Jiang W, Wu T, Du X. The OsWRKY63-OsWRKY76-OsDREB1B module regulates chilling tolerance in rice. Plant J 2022; 112:383-398. [PMID: 35996876 DOI: 10.1111/tpj.15950] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 08/05/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
Rice (Oryza sativa) is sensitive to low temperatures, which affects the yield and quality of rice. Therefore, uncovering the molecular mechanisms behind chilling tolerance is a critical task for improving cold tolerance in rice cultivars. Here, we report that OsWRKY63, a WRKY transcription factor with an unknown function, negatively regulates chilling tolerance in rice. OsWRKY63-overexpressing rice lines are more sensitive to cold stress. Conversely, OsWRKY63-knockout mutants generated using a CRISPR/Cas9 genome editing approach exhibited increased chilling tolerance. OsWRKY63 was expressed in all rice tissues, and OsWRKY63 expression was induced under cold stress, dehydration stress, high salinity stress, and ABA treatment. OsWRKY63 localized in the nucleus plays a role as a transcription repressor and downregulates many cold stress-related genes and reactive oxygen species scavenging-related genes. Molecular, biochemical, and genetic assays showed that OsWRKY76 is a direct target gene of OsWRKY63 and that its expression is suppressed by OsWRKY63. OsWRKY76-knockout lines had dramatically decreased cold tolerance, and the cold-induced expression of five OsDREB1 genes was repressed. OsWRKY76 interacted with OsbHLH148, transactivating the expression of OsDREB1B to enhance chilling tolerance in rice. Thus, our study suggests that OsWRKY63 negatively regulates chilling tolerance through the OsWRKY63-OsWRKY76-OsDREB1B transcriptional regulatory cascade in rice.
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Affiliation(s)
- Mingxing Zhang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Ranran Zhao
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Kai Huang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Shuangzhan Huang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Haitao Wang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Zhiqi Wei
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Zhao Li
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Mingdi Bian
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Wenzhu Jiang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Tao Wu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Xinglin Du
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
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Mo W, Zhang J, Zhang L, Yang Z, Yang L, Yao N, Xiao Y, Li T, Li Y, Zhang G, Bian M, Du X, Zuo Z. Arabidopsis cryptochrome 2 forms photobodies with TCP22 under blue light and regulates the circadian clock. Nat Commun 2022; 13:2631. [PMID: 35551190 PMCID: PMC9098493 DOI: 10.1038/s41467-022-30231-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 04/22/2022] [Indexed: 11/13/2022] Open
Abstract
Cryptochromes are blue light receptors that regulate plant growth and development. They also act as the core components of the central clock oscillator in animals. Although plant cryptochromes have been reported to regulate the circadian clock in blue light, how they do so is unclear. Here we show that Arabidopsis cryptochrome 2 (CRY2) forms photobodies with the TCP22 transcription factor in response to blue light in plant cells. We provide evidence that PPK kinases influence the characteristics of these photobodies and that together these components, along with LWD transcriptional regulators, can positively regulate the expression of CCA1 encoding a central component of the circadian oscillator. Cryptochrome signaling has been reported to regulate circadian oscillations in plants. Here the authors show that CRY2 and the TCP22 transcription factors can form photobodies in a blue light dependent manner and induce expression of CCA1, a core component of the circadian oscillator.
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Affiliation(s)
- Weiliang Mo
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun, 130062, China
| | - Junchuan Zhang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun, 130062, China
| | - Li Zhang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun, 130062, China
| | - Zhenming Yang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun, 130062, China
| | - Liang Yang
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Nan Yao
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Yong Xiao
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun, 130062, China
| | - Tianhong Li
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun, 130062, China
| | - Yaxing Li
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Guangmei Zhang
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Mingdi Bian
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun, 130062, China
| | - Xinglin Du
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun, 130062, China
| | - Zecheng Zuo
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun, 130062, China. .,Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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Zhang L, Li T, Su S, Peng H, Li S, Li K, Ji L, Xing Y, Zhang J, Du X, Bian M, Liao Y, Yang Z, Zuo Z. Functions of COP1/SPA E3 Ubiquitin Ligase Mediated by MpCRY in the Liverwort Marchantia polymorpha under Blue Light. Int J Mol Sci 2021; 23:ijms23010158. [PMID: 35008588 PMCID: PMC8745113 DOI: 10.3390/ijms23010158] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/19/2021] [Accepted: 12/21/2021] [Indexed: 12/03/2022] Open
Abstract
COP1/SPA1 complex in Arabidopsis inhibits photomorphogenesis through the ubiquitination of multiple photo-responsive transcription factors in darkness, but such inhibiting function of COP1/SPA1 complex would be suppressed by cryptochromes in blue light. Extensive studies have been conducted on these mechanisms in Arabidopsis whereas little attention has been focused on whether another branch of land plants bryophyte utilizes this blue-light regulatory pathway. To study this problem, we conducted a study in the liverwort Marchantia polymorpha and obtained a MpSPA knock-out mutant, in which Mpspa exhibits the phenotype of an increased percentage of individuals with asymmetrical thallus growth, similar to MpCRY knock-out mutant. We also verified interactions of MpSPA with MpCRY (in a blue light-independent way) and with MpCOP1. Concomitantly, both MpSPA and MpCOP1 could interact with MpHY5, and MpSPA can promote MpCOP1 to ubiquitinate MpHY5 but MpCRY does not regulate the ubiquitination of MpHY5 by MpCOP1/MpSPA complex. These data suggest that COP1/SPA ubiquitinating HY5 is conserved in Marchantia polymorpha, but dissimilar to CRY in Arabidopsis, MpCRY is not an inhibitor of this process under blue light.
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Affiliation(s)
- Li Zhang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China; (L.Z.); (T.L.); (S.S.); (S.L.); (J.Z.); (X.D.); (M.B.)
| | - Tianhong Li
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China; (L.Z.); (T.L.); (S.S.); (S.L.); (J.Z.); (X.D.); (M.B.)
| | - Shengzhong Su
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China; (L.Z.); (T.L.); (S.S.); (S.L.); (J.Z.); (X.D.); (M.B.)
| | - Hao Peng
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning 530001, China; (H.P.); (Y.L.)
| | - Sudi Li
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China; (L.Z.); (T.L.); (S.S.); (S.L.); (J.Z.); (X.D.); (M.B.)
| | - Ke Li
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (K.L.); (L.J.); (Y.X.)
| | - Luyao Ji
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (K.L.); (L.J.); (Y.X.)
| | - Yaoyun Xing
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (K.L.); (L.J.); (Y.X.)
| | - Junchuan Zhang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China; (L.Z.); (T.L.); (S.S.); (S.L.); (J.Z.); (X.D.); (M.B.)
| | - Xinglin Du
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China; (L.Z.); (T.L.); (S.S.); (S.L.); (J.Z.); (X.D.); (M.B.)
| | - Mingdi Bian
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China; (L.Z.); (T.L.); (S.S.); (S.L.); (J.Z.); (X.D.); (M.B.)
| | - Yuying Liao
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning 530001, China; (H.P.); (Y.L.)
| | - Zhenming Yang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China; (L.Z.); (T.L.); (S.S.); (S.L.); (J.Z.); (X.D.); (M.B.)
- Correspondence: (Z.Y.); (Z.Z.)
| | - Zecheng Zuo
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China; (L.Z.); (T.L.); (S.S.); (S.L.); (J.Z.); (X.D.); (M.B.)
- Correspondence: (Z.Y.); (Z.Z.)
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Chen M, Li Z, Huang J, Yan Y, Wu T, Bian M, Zhou J, Wang Y, Lyv Y, Hu G, Jin YM, Huang K, Guo L, Jiang W, Du X. Dissecting the meteorological and genetic factors affecting rice grain quality in Northeast China. Genes Genomics 2021; 43:975-986. [PMID: 34169463 PMCID: PMC8292277 DOI: 10.1007/s13258-021-01121-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 06/08/2021] [Indexed: 01/22/2023]
Abstract
Background The Northeast Plain of China, which is an important region for the production of high grain quality rice in China. However, the grain quality of the rice produced varies across this region, even for the same cultivar. Objective In order to explore the meteorological factors that have the greatest influence on quality and the transcriptional level differences between different cultivars and different locations at grain filling stage. Methods We grew eight rice cultivars in three locations in Northeast China during two growing seasons (2017 and 2018). We recorded meteorological conditions, including air temperature, air temperature range, and photosynthetically active radiation (PAR) during the grain-filling stage of each cultivar, and analyzed the grain quality of those eight cultivars. Results Across all eight cultivars, meteorological factors had a stronger effect on eating quality than genotype, while genotype had a stronger effect on milling quality. Of the three environmental factors assessed, PAR was significantly correlated with the most grain quality traits. Using RNA-sequencing analysis, we identified 573 environment-specific DEGs (Differentially Expressed Genes), and 119 genotype-specific DEGs; 11 DEGs were responsive to genotype × environment interactions. These DEGs were involved in many key metabolic processes. Conclusion Our results indicated that interactions among environmental factors, especially PAR, affected rice quality in Northeast China. Further analyses of the DEGs identified herein may provide useful information for future breeding programs aiming to develop high grain quality rice varieties suitable for cultivation across Northeast China. Supplementary Information The online version contains supplementary material available at 10.1007/s13258-021-01121-z.
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Affiliation(s)
- Mojun Chen
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, No. 5333 Xi'an Road, Changchun, 130062, China.,Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Zhao Li
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, No. 5333 Xi'an Road, Changchun, 130062, China
| | - Jie Huang
- Huazhi Rice Bio-Tech Co., Ltd., Changsha, 410125, China
| | - Yongfeng Yan
- Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Tao Wu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, No. 5333 Xi'an Road, Changchun, 130062, China
| | - Mingdi Bian
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, No. 5333 Xi'an Road, Changchun, 130062, China
| | - Jinsong Zhou
- Heilongjiang Academy of Agricultural Sciences, Harbin, 150086, China
| | - Yongjun Wang
- Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Yanjie Lyv
- Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Guanghui Hu
- Heilongjiang Academy of Agricultural Sciences, Harbin, 150086, China
| | - Yong-Mei Jin
- Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Kai Huang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, No. 5333 Xi'an Road, Changchun, 130062, China
| | - Liping Guo
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, No. 5333 Xi'an Road, Changchun, 130062, China
| | - Wenzhu Jiang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, No. 5333 Xi'an Road, Changchun, 130062, China.
| | - Xinglin Du
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, No. 5333 Xi'an Road, Changchun, 130062, China.
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5
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Zhou L, Lu Y, Huang J, Sha Z, Mo W, Xue J, Ma S, Shi W, Yang Z, Gao J, Bian M. Arabidopsis CIB3 regulates photoperiodic flowering in an FKF1-dependent way. Biosci Biotechnol Biochem 2021; 85:765-774. [PMID: 33686404 DOI: 10.1093/bbb/zbaa120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/21/2020] [Accepted: 12/22/2020] [Indexed: 01/29/2023]
Abstract
Arabidopsis cryptochrome 2 (CRY2) and FLAVIN-BINDING, KELCH REPEAT, and F-BOX 1 (FKF1) are blue light receptors mediating light regulation of growth and development, such as photoperiodic flowering. CRY2 interacts with a basic helix-loop-helix transcription factor CIB1 in response to blue light to activate the transcription of the flowering integrator gene FLOWERING LOCUS T (FT). CIB1, CIB2, CIB4, and CIB5 function redundantly to promote flowering in a CRY2-dependent way and form various heterodimers to bind to the noncanonical E-box sequence in the FT promoter. However, the function of CIB3 has not been described. We discovered that CIB3 promotes photoperiodic flowering independently of CRY2. Moreover, CIB3 does not interact with CRY2 but interacts with CIB1 and functions synergistically with CIB1 to promote the transcription of the GI gene. FKF1 is required for CIB3 to promote flowering and enhances the CIB1-CIB3 interaction in response to blue light.
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Affiliation(s)
- Lianxia Zhou
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Yi Lu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Jie Huang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Zhiwei Sha
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Weiliang Mo
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Jiayi Xue
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China.,Humen Foreign Language School, Dongguan, China
| | - Shuodan Ma
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Wuliang Shi
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Zhenming Yang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Jie Gao
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Mingdi Bian
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
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Chen H, Yu H, Jiang W, Li H, Wu T, Chu J, Xin P, Li Z, Wang R, Zhou T, Huang K, Lu L, Bian M, Du X. Overexpression of ovate family protein 22 confers multiple morphological changes and represses gibberellin and brassinosteroid signalings in transgenic rice. Plant Sci 2021; 304:110734. [PMID: 33568286 DOI: 10.1016/j.plantsci.2020.110734] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 08/21/2020] [Accepted: 10/18/2020] [Indexed: 05/27/2023]
Abstract
OVATE family proteins (OFPs) are plant-specific transcription factors that regulate plant growth and development. OFPs interact with 3-aa loop extension (TALE) homeodomain proteins and brassinosteroid (BR) signaling components to modulate gibberellic acid (GA) biosynthesis and BR responses. Bioactive GAs are essential in regulating plant organogenesis and organ growth by promoting cell differentiation and elongation. DELLA proteins act as the central repressors of GA-regulated processes and are targeted to be degraded by the 26S proteasome in the presence of GA. We discovered that the rice OFP22 negatively regulates GA and BR signal transduction. OsOFP22 expression was rapidly up-regulated by exogenous GA and BR application, detected predominantly in the calli and spikelets. Overexpression of OsOFP22 conferred multiple morphological phenotypes, including reduced plant height, dark green leaves, and shortened and widened leaves, floral organs and grains. The GA-induced elongation of the second leaf sheath in the seedlings, and α-amylase activity in the endosperms were attenuated in transgenic lines overexpressing OsOFP22, while GA-biosynthesis gene transcripts and bioactive GA3 and GA4 contents were increased in the transgenic plants. OsOFP22 promotes the protein accumulation of SLR1, the single DELLA in rice protein. Furthermore, Overexpression of OsOFP22 suppresses BR response and the expression of BR-related genes. OsOFP22 is thus involved in the repression of GA and BR signal transduction and integrates GA with BR to regulate plant growth and development.
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Affiliation(s)
- Haoyuan Chen
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China
| | - Hui Yu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China; Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Wenzhu Jiang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China
| | - Hongyu Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Tao Wu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China
| | - Jinfang Chu
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100039, China
| | - Peiyong Xin
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhao Li
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China
| | - Rui Wang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China
| | - Tie Zhou
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China
| | - Kai Huang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China
| | - Lin Lu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China
| | - Mingdi Bian
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China.
| | - Xinglin Du
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China.
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7
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Abstract
Recent work has shown that outcomes in clinical trials can be affected by which treatment the trial participants would select if they were allowed to do so, and if they do or do not actually receive that treatment. These influences are known as selection and preference effects, respectively. Unfortunately, they cannot be evaluated in conventional, parallel group trials because patient preferences remain unknown. However, several alternative designs have been proposed, to measure and take account of patient preferences. In this paper, we discuss three preference-based designs (the two-stage, fully randomised, and partially randomised designs). In conventional trials, only the treatment effect is estimable, while the preference-based designs have the potential to estimate some or all of the selection and preference effects. The relative efficiency of these designs is affected by several factors, including the proportion of participants who are undecided about treatments, or who are unable or unwilling to state a preference; the relative preference rate between the treatments being compared, among patients who do have a preference; and the ratio of patients randomised to each treatment. We also discuss the advantages and disadvantages of these designs under different scenarios.
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Affiliation(s)
- S D Walter
- Department of Health Research Methodology, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - M Bian
- Department of Mathematics & Statistics, McMaster University, Hamilton, ON, Canada
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8
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Ma Z, Wu T, Huang K, Jin YM, Li Z, Chen M, Yun S, Zhang H, Yang X, Chen H, Bai H, Du L, Ju S, Guo L, Bian M, Hu L, Du X, Jiang W. A Novel AP2/ERF Transcription Factor, OsRPH1, Negatively Regulates Plant Height in Rice. Front Plant Sci 2020; 11:709. [PMID: 32528516 PMCID: PMC7266880 DOI: 10.3389/fpls.2020.00709] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 05/05/2020] [Indexed: 05/24/2023]
Abstract
The APETALA 2/ethylene response factors (AP2/ERF) are widespread in the plant kingdom and play essential roles in regulating plant growth and development as well as defense responses. In this study, a novel rice AP2/ERF transcription factor gene, OsRPH1, was isolated and functionally characterized. OsRPH1 falls into group-IVa of the AP2/ERF family. OsRPH1 protein was found to be localized in the nucleus and possessed transcriptional activity. Overexpression of OsRPH1 resulted in a decrease in plant height and length of internode and leaf sheath as well as other abnormal characters in rice. The length of the second leaf sheath of OsRPH1-overexpressing (OE) plants recovered to that of Kitaake (non-transgenic recipient) in response to exogenous gibberellin A3 (GA3) application. The expression of GA biosynthesis genes (OsGA20ox1-OsGA20ox4, OsGA3ox1, and OsGA3ox2) was significantly downregulated, whereas that of GA inactivation genes (OsGA2ox7, OsGA2ox9, and OsGA2ox10) was significantly upregulated in OsRPH1-OE plants. Endogenous bioactive GA contents significantly decreased in OsRPH1-OE plants. OsRPH1 interacted with a blue light receptor, OsCRY1b, in a blue light-dependent manner. Taken together, our results demonstrate that OsRPH1 negatively regulates plant height and bioactive GA content by controlling the expression of GA metabolism genes in rice. OsRPH1 is involved in blue light inhibition of leaf sheath elongation by interacting with OsCRY1b.
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Affiliation(s)
- Ziming Ma
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Tao Wu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Kai Huang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Yong-Mei Jin
- Jilin Academy of Agricultural Sciences, Changchun, China
| | - Zhao Li
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Mojun Chen
- Jilin Academy of Agricultural Sciences, Changchun, China
| | - Sokyong Yun
- Kye Ung Sang College of Agriculture of Kim II Sung University, Pyongyang, North Korea
| | - Hongjia Zhang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Xue Yang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Haoyuan Chen
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Huijiao Bai
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Lin Du
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Shanshan Ju
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Liping Guo
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Mingdi Bian
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Lanjuan Hu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Xinglin Du
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Wenzhu Jiang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
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Zhou T, Meng L, Ma Y, Liu Q, Zhang Y, Yang Z, Yang D, Bian M. Overexpression of sweet sorghum cryptochrome 1a confers hypersensitivity to blue light, abscisic acid and salinity in Arabidopsis. Plant Cell Rep 2018; 37:251-264. [PMID: 29098377 DOI: 10.1007/s00299-017-2227-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 10/16/2017] [Indexed: 05/14/2023]
Abstract
This work provides the bioinformatics, expression pattern and functional analyses of cryptochrome 1a from sweet sorghum (SbCRY1a), together with an exploration of the signaling mechanism mediated by SbCRY1a. Sweet sorghum [Sorghum bicolor (L.) Moench] is considered to be an ideal candidate for biofuel production due to its high efficiency of photosynthesis and the ability to maintain yield under harsh environmental conditions. Blue light receptor cryptochromes regulate multiple aspects of plant growth and development. Here, we reported the function and signal mechanism of sweet sorghum cryptochrome 1a (SbCRY1a) to explore its potential for genetic improvement of sweet sorghum varieties. SbCRY1a transcripts experienced almost 24 h diurnal cycling; however, its protein abundance showed no oscillation. Overexpression of SbCRY1a in Arabidopsis rescued the phenotype of cry1 mutant in a blue light-specific manner and regulated HY5 accumulation under blue light. SbCRY1a protein was present in both nucleus and cytoplasm. The photoexcited SbCRY1a interacted directly with a putative RING E3 ubiquitin ligase constitutive photomorphogenesis 1 (COP1) from sweet sorghum (SbCOP1) instead of SbSPA1 to suppress SbCOP1-SbHY5 interaction responding to blue light. These observations indicate that the function and signaling mechanism of cryptochromes are basically conservative between monocotyledons and dicotyledons. Moreover, SbCRY1a-overexpressed transgenic Arabidopsis showed oversensitive to abscisic acid (ABA) and salinity. The ABA-responsive gene ABI5 was up-regulated evidently in SbCRY1a transgenic lines, suggesting that SbCRY1a might regulate ABA signaling through the HY5-ABI5 regulon.
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Affiliation(s)
- Tingting Zhou
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 xi'an Road, Changchun, 130062, China
| | - Lingyang Meng
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 xi'an Road, Changchun, 130062, China
| | - Yue Ma
- Agronomy College of Northeast Agricultural University, 59 Wood Street, Harbin, 150030, China
| | - Qing Liu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 xi'an Road, Changchun, 130062, China
| | - Yunyun Zhang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 xi'an Road, Changchun, 130062, China
| | - Zhenming Yang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 xi'an Road, Changchun, 130062, China
| | - Deguang Yang
- Agronomy College of Northeast Agricultural University, 59 Wood Street, Harbin, 150030, China
| | - Mingdi Bian
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 xi'an Road, Changchun, 130062, China.
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Wang Q, Barshop WD, Bian M, Vashisht AA, He R, Yu X, Liu B, Nguyen P, Liu X, Zhao X, Wohlschlegel JA, Lin C. The Blue Light-Dependent Phosphorylation of the CCE Domain Determines the Photosensitivity of Arabidopsis CRY2. Mol Plant 2017; 10:357. [PMID: 28196586 DOI: 10.1016/j.molp.2016.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Liu Q, Wang Q, Liu B, Wang W, Wang X, Park J, Yang Z, Du X, Bian M, Lin C. The Blue Light-Dependent Polyubiquitination and Degradation of Arabidopsis Cryptochrome2 Requires Multiple E3 Ubiquitin Ligases. Plant Cell Physiol 2016; 57:2175-2186. [PMID: 27516416 PMCID: PMC6083963 DOI: 10.1093/pcp/pcw134] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 07/20/2016] [Indexed: 05/23/2023]
Abstract
Cryptochromes are blue light receptors regulated by light-dependent ubiquitination and degradation in both plant and animal lineages. The Arabidopsis genome encodes two cryptochromes, CRY1 and CRY2, of which CRY2 undergoes blue light-dependent ubiquitination and 26S proteasome-dependent degradation. The molecular mechanism regulating blue light-dependent proteolysis of CRY2 is still not fully understood. We found that the F-box proteins ZEITLUPE (ZTL) and Lov Kelch Protein2 (LKP2), which mediate blue light suppression of degradation of the CRY2 signaling partner CIB1, are not required for the blue light-dependent CRY2 degradation. We further showed that the previously reported function of the COP1-SPA1 protein complex in blue light-dependent CRY2 degradation is more likely to be attributable to its cullin 4 (CUL4)-based E3 ubiquitin ligase activity than its activity as the cryptochrome signaling partner. However, the blue light-dependent CRY2 degradation is only partially impaired in the cul4 mutant, the cop1-5 null mutant and the spa1234 quadruple mutant, suggesting a possible involvement of additional E3 ubiquitin ligases in the regulation of CRY2. Consistent with this hypothesis, we demonstrated that the blue light-dependent CRY2 degradation is significantly impaired in the temperature-sensitive cul1 mutant allele (axr6-3), especially under the non-permissive temperature. Based on these and other results presented, we propose that photoexcited CRY2 undergoes Lys48-linked polyubiquitination catalyzed by the CUL4- and CUL1-based E3 ubiquitin ligases.
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Affiliation(s)
- Qing Liu
- Laboratory of Soil and Plant Molecular Genetics, College of Plant Science, Jilin University, Changchun 130062, China
- Basic Forestry and Proteomics Research Center, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - Qin Wang
- Basic Forestry and Proteomics Research Center, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - Bin Liu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Wei Wang
- Basic Forestry and Proteomics Research Center, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xu Wang
- Basic Forestry and Proteomics Research Center, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - Joon Park
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - Zhenming Yang
- Laboratory of Soil and Plant Molecular Genetics, College of Plant Science, Jilin University, Changchun 130062, China
| | - Xinglin Du
- Laboratory of Soil and Plant Molecular Genetics, College of Plant Science, Jilin University, Changchun 130062, China
| | - Mingdi Bian
- Laboratory of Soil and Plant Molecular Genetics, College of Plant Science, Jilin University, Changchun 130062, China
| | - Chentao Lin
- Laboratory of Soil and Plant Molecular Genetics, College of Plant Science, Jilin University, Changchun 130062, China
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
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Jin H, Lian N, Zhang F, Chen L, Chen Q, Lu C, Bian M, Shao J, Wu L, Zheng S. Activation of PPARγ/P53 signaling is required for curcumin to induce hepatic stellate cell senescence. Cell Death Dis 2016; 7:e2189. [PMID: 27077805 PMCID: PMC4855671 DOI: 10.1038/cddis.2016.92] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 03/06/2016] [Accepted: 03/14/2016] [Indexed: 02/07/2023]
Abstract
Activation of quiescent hepatic stellate cells (HSCs) is the major event in hepatic fibrogenesis, along with enhancement of cell proliferation and overproduction of extracellular matrix. Although inhibition of cell proliferation and induction of apoptosis are potential strategies to block the activation of HSCs, a better understanding of the senescence of activated HSCs can provide a new therapeutic strategy for prevention and treatment of liver fibrosis. The antioxidant curcumin, a phytochemical from turmeric, has been shown to suppress HSC activation in vitro and in vivo. The current work was aimed to evaluate the effect of curcumin on senescence of activated HSCs and to elucidate the underlying mechanisms. In this study, curcumin promoted the expression of senescence marker Hmga1 in rat fibrotic liver. In addition, curcumin increased the number of senescence-associated β-galactosidase-positive HSCs in vitro. At the same time, curcumin induced HSC senescence by elevating the expression of senescence markers P16, P21 and Hmga1, concomitant with reduced abundance of HSC activation markers α-smooth muscle actin and α1(I)-procollagen in cultured HSCs. Moreover, curcumin affected the cell cycle and telomerase activity. We further demonstrated that P53 pharmacological inhibitor pifithrin-α (PFT-α) or transfection with P53 siRNA abrogated the curcumin-induced HSC senescence in vitro. Meanwhile, curcumin disruption of P53 leading to increased senescence of activated HSCs was further verified in vivo. Further studies indicated that curcumin promoted the expression of P53 through a PPARγ activation-dependent mechanism. Moreover, promoting PPARγ transactivating activity by a PPARγ agonist 15d-PGJ2 markedly enhanced curcumin induction of senescence of activated HSCs. However, the PPARγ antagonist PD68235 eliminated curcumin induction of HSC senescence. Taken together, our results provided a novel insight into the mechanisms underlying curcumin inhibition of HSC activation through inducing senescence.
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Affiliation(s)
- H Jin
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - N Lian
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - F Zhang
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - L Chen
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Q Chen
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - C Lu
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - M Bian
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - J Shao
- Department of Pharmacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - L Wu
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - S Zheng
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210023, China
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He Z, Liu B, Wang X, Bian M, He R, Yan J, Zhong M, Zhao X, Liu X. Construction and Validation of a Dual-Transgene Vector System for Stable Transformation in Plants. J Genet Genomics 2016; 43:199-207. [PMID: 27157807 DOI: 10.1016/j.jgg.2016.02.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 07/05/2015] [Revised: 02/14/2016] [Accepted: 02/25/2016] [Indexed: 11/16/2022]
Abstract
In this study, we constructed dual-transgene vectors (pDT1, pDT7, and pDT7G) that simultaneously co-expressed two genes in plants. ACTIN2 and UBQ10 promoters were used to control the expression of these two genes. The 4×Myc, 3×HA, and 3×Flag reporter genes allowed for the convenient identification of a tunable co-expression system in plants, whereas the dexamethasone (Dex) inducible reporter gene C-terminus of the glucocorticoid receptor (cGR) provided Dex-dependent translocation of the fusion gene between the nucleus and cytoplasm. The function of pDT vectors was validated using four pairwise genes in Nicotiana benthamiana or Arabidopsis thaliana. The co-expression efficiency of two genes from the pDT1 and pDT7G vectors was 35% and 42%, respectively, which ensured the generation of sufficient transgenic materials. These pDT vectors are simple, reliable, efficient, and time-saving tools for the co-expression of two genes through a single transformation event and can be used in the study of protein-protein interactions or multi-component complexes.
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Affiliation(s)
- Zhimin He
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China; Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - Bin Liu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xu Wang
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - Mingdi Bian
- College of Plant Sciences, Jilin University, Changchun 130062, China
| | - Reqing He
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China
| | - Jindong Yan
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China
| | - Ming Zhong
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China
| | - Xiaoying Zhao
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China.
| | - Xuanming Liu
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China.
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14
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Wang Q, Barshop WD, Bian M, Vashisht AA, He R, Yu X, Liu B, Nguyen P, Liu X, Zhao X, Wohlschlegel JA, Lin C. The blue light-dependent phosphorylation of the CCE domain determines the photosensitivity of Arabidopsis CRY2. Mol Plant 2015; 8:631-43. [PMID: 25792146 PMCID: PMC5219891 DOI: 10.1016/j.molp.2015.03.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 03/03/2015] [Accepted: 03/04/2015] [Indexed: 05/19/2023]
Abstract
Arabidopsis cryptochrome 2 (CRY2) is a blue light receptor that mediates light inhibition of hypocotyl elongation and long-day promotion of floral initiation. CRY2 is known to undergo blue light-dependent phosphorylation, which is believed to serve regulatory roles in the function of CRY2. We report here on a biochemical and genetics study of CRY2 phosphorylation. Using mass spectrometry analysis, we identified three serine residues in the CCE domain of CRY2 (S598, S599, and S605) that undergo blue light-dependent phosphorylation in Arabidopsis seedlings. A study of serine-substitution mutations in the CCE domain of CRY2 demonstrates that CRY2 contains two types of phosphorylation in the CCE domain, one in the serine cluster that causes electrophoretic mobility upshift and the other outside the serine cluster that does not seem to cause mobility upshift. We showed that mutations in the serine residues within and outside the serine cluster diminished blue light-dependent CRY2 phosphorylation, degradation, and physiological activities. These results support the hypothesis that blue light-dependent phosphorylation of the CCE domain determines the photosensitivity of Arabidopsis CRY2.
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Affiliation(s)
- Qin Wang
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China; Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China; Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - William D Barshop
- Department of Biological Chemistry, University of California, Los Angeles, CA 90095, USA
| | - Mingdi Bian
- Laboratory of Soil and Plant Molecular Genetics, College of Plant Science, Jilin University, Changchun 130062, China
| | - Ajay A Vashisht
- Department of Biological Chemistry, University of California, Los Angeles, CA 90095, USA
| | - Reqing He
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China
| | - Xuhong Yu
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - Bin Liu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Paula Nguyen
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - Xuanming Liu
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China
| | - Xiaoying Zhao
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China.
| | - James A Wohlschlegel
- Department of Biological Chemistry, University of California, Los Angeles, CA 90095, USA
| | - Chentao Lin
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA.
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15
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Bian M, Sun DK, Sun DF, Sun GL. Characterization of agronomic and quality traits and HSW-G5 compositions from the progenies of common wheat (Triticum aestivum L.) with different protein content. Genet Mol Res 2015; 14:1975-85. [PMID: 25867343 DOI: 10.4238/2015.march.20.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
High molecular weight glutenin subunits (HMW-GS) play an essential role in wheat processing quality. In this study, we evaluated the genetic pattern with HMW-GS composition between generations and examined whether agronomic and quality traits were correlated with each other. A wheat (Triticum aestivum L.) cultivar with high protein content and 2 cultivars with low protein content were subjected to a reciprocal cross. Sixteen agronomic and 4 quality characteristics were investigated. A total of 216 seeds from each F2 generation were chosen randomly and analyzed for HMW-GS composition using sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Agronomic and quality characteristics were not significantly different between reciprocal crosses, indicating no cytoplasmic effect on the characteristics studied. The separation ratio of 2 HMW-GS loci was 9:3:3:1, indicating no linkage between any 2 loci. The novel HMW-GS N was detected in cultivar R145, which did not follow the Mendelian segregation ratio. A Glu-A1a(1) band was not detected in 1 individual from Tian8901xR145. Average grain weight per spike was significantly correlated with quality characteristics and may be a suitable criterion for selecting high protein content in wheat breeding programs.
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Affiliation(s)
- M Bian
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - D K Sun
- College of Biology, Wuhan University, Wuhan, China
| | - D F Sun
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - G L Sun
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
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Abstract
OBJECTIVE The distribution of cervical intraepithelial neoplasia (CIN) lesions across the cervix was determined. METHODS A total of 575 women whose pathological diagnosis after cervical conization was confirmed as CIN were studied; 146 had low-grade CIN and 429 had high-grade CIN. CIN lesion location on the cervix was recorded using 12-h clock face notation. RESULTS In both groups, 12 o'clock was the most common and 2 o'clock the least common lesion location. The most severe lesions were most often located at 8 o'clock and 7 o'clock, in the low- and high-grade groups, respectively. The 2 o'clock site was the least frequent site for the most severe lesion in both groups. Lesions were found more frequently on the posterior lip of the cervix than on the anterior lip, and on the right side of the cervix than on the left side, in both groups. CONCLUSIONS The distribution of CIN lesions is not randomly distributed across the cervix. The 12, 8 and 7 o'clock sites, and the posterior lip and right side of the cervix, should be targeted during colposcopy-directed biopsy of patients with CIN lesions as this may improve diagnostic accuracy.
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Affiliation(s)
- G He
- Department of Obstetrics and Gynaecology, China-Japan Friendship Hospital, Beijing, China
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Zhang C, Bian M, Yu H, Liu Q, Yang Z. Identification of alkaline stress-responsive genes of CBL family in sweet sorghum (Sorghum bicolor L.). Plant Physiol Biochem 2011; 49:1306-12. [PMID: 22000054 DOI: 10.1016/j.plaphy.2011.08.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Accepted: 08/27/2011] [Indexed: 05/21/2023]
Abstract
Calcineurin B-like proteins play important roles in the calcium perception and signal transduction of abiotic stress. In this study, the bioinformatic analysis of molecular characteristics of Sorghum bicolor calcineurin B-like protein (SbCBL) revealed that sequences of SbCBL are highly conserved, and most SbCBLs have three typical EF-hands structures. Among the SbCBL proteins, four of which, SbCBL01, 04, 05, 08, have a conserved N-myristoylation domain. Stress-responsive and phytohormone-responsive cis-elements were found in the promoter regions of SbCBL genes. Real-time quantitative polymerase chain reaction (RTqPCR) analysis showed that SbCBL genes have different tissue-specific expression patterns under normal growth conditions in sweet sorghum (Sorghum bicolor L. Moench). Interestingly, when treated with sodium carbonate, SbCBL genes also show various sodium carbonate stress responsive patterns in sweet sorghum seedlings. These results suggest that SbCBLs may participate in regulating sodium carbonate stress-specific cellular adaptation responses and influencing growth and developmental patterns in sweet sorghum.
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Affiliation(s)
- Chunxia Zhang
- Laboratory of Soil and Plant Molecular Genetics, College of Plant Science, Jilin University, Changchun 130062, China
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Zhang C, Bian M, Yu H, Liu Q, Yang Z. Identification of alkaline stress-responsive genes of CBL family in sweet sorghum (Sorghum bicolor L.). Plant Physiol Biochem 2011. [PMID: 22000054 DOI: 10.1016/jplaphy201108010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Calcineurin B-like proteins play important roles in the calcium perception and signal transduction of abiotic stress. In this study, the bioinformatic analysis of molecular characteristics of Sorghum bicolor calcineurin B-like protein (SbCBL) revealed that sequences of SbCBL are highly conserved, and most SbCBLs have three typical EF-hands structures. Among the SbCBL proteins, four of which, SbCBL01, 04, 05, 08, have a conserved N-myristoylation domain. Stress-responsive and phytohormone-responsive cis-elements were found in the promoter regions of SbCBL genes. Real-time quantitative polymerase chain reaction (RTqPCR) analysis showed that SbCBL genes have different tissue-specific expression patterns under normal growth conditions in sweet sorghum (Sorghum bicolor L. Moench). Interestingly, when treated with sodium carbonate, SbCBL genes also show various sodium carbonate stress responsive patterns in sweet sorghum seedlings. These results suggest that SbCBLs may participate in regulating sodium carbonate stress-specific cellular adaptation responses and influencing growth and developmental patterns in sweet sorghum.
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Affiliation(s)
- Chunxia Zhang
- Laboratory of Soil and Plant Molecular Genetics, College of Plant Science, Jilin University, Changchun 130062, China
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Cai L, Bian M, Liu M, Sheng Z, Suo H, Wang Z, Huang F, Fei J. Ethanol-induced neurodegeneration in NRSF/REST neuronal conditional knockout mice. Neuroscience 2011; 181:196-205. [PMID: 21396985 DOI: 10.1016/j.neuroscience.2011.02.059] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Revised: 01/24/2011] [Accepted: 02/28/2011] [Indexed: 10/18/2022]
Abstract
The transcription regulator, neuron-restrictive silencer factor (NRSF), also known as repressor element-1 silencing transcription factor (REST), plays an important role in neurogenesis and various neuronal diseases such as ischaemia, epilepsy, and Huntington's disease. In these disease processes, neuronal loss is associated with abnormal expression and/or localization of NRSF. Previous studies have demonstrated that NRSF regulates the effect of ethanol on neuronal cells in vitro, however, the role of NRSF in ethanol-induced neuronal cell death remains unclear. We generated nrsf conditional knockout mice using the Cre-loxP system to disrupt neuronal expression of nrsf and its truncated forms. At postnatal day 6, ethanol significantly increased the expression of REST4, a neuron-specific truncated form of NRSF, in the brains of wild type mice, and this effect was diminished in nrsf conditional knockout mice. The apoptotic effect of ethanol was pronounced in multiple brain regions of nrsf conditional mutant mice. These results indicate that NRSF, specifically REST4, may protect the developing brain from ethanol, and provide new evidence that NRSF can be a therapeutic target in foetal alcohol syndrome (FAS).
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Affiliation(s)
- L Cai
- Laboratory of Molecular Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
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He G, Bian M. O379 Experimental study on mechanism of 5-aminolevulinic acid photodynamic therapy (5-ALA-PDT) in vitro and in vivo on cervical cancer. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)60751-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Li M, Bian M, Wang J. [Analysis of pregnancy rates after treatment of tubal pregnancy with systemic methotrexate]. Zhonghua Fu Chan Ke Za Zhi 2001; 36:534-5. [PMID: 11769666] [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: 02/23/2023]
Abstract
OBJECTIVE To analyse the pregnancy rate after treatment of tubal pregnancy with the systemic methotrexate (MTX) injection. METHODS From March 1985 to August 1999, 129 women with confirmed unruptured tubal pregnancy, and desiring to conceive were selected. Among them 60 women were successfully treated with systemic MTX, and 69 with unilateral salpingectomy. All cases were followed up for 1-15 years. RESULTS The rates of subsequent intrauterine pregnancies (IUP) in the MTX group was 73% (44 cases) and of recurrent extrauterine pregnancies (EP) was 8% (5 cases). Among 69 patients treated by salpingectomy, the rates of IUP and EP was 70% (48 cases) and 4% (3 cases) respectively. The differences between the two groups were not statistically significant. CONCLUSIONS The effect of conservative management with MTX was similar to those of salpingectomy. The rate of subsequent pregnancy did not increased.
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Affiliation(s)
- M Li
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing 100029, China
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Bian M, Liu X, Sun A. [Application of high frequency radiosurgical knife in the treatment of cervical diseases]. Zhonghua Fu Chan Ke Za Zhi 2000; 35:160-2. [PMID: 11775895] [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: 02/23/2023]
Abstract
OBJECTIVE To investigate the indication, resection scope of loop electrosurgical excision procedure (LEEP) and pathological characteristics. METHODS 176 cases with abnormal cytological and colposcopical findings, including cervical intraepithelial neoplasia (CIN) and atypical squamous cells of undermined significance (ASCUS), were studied. Conization of cervix was performed in 63 cases of > or = CIN2, of which 33 cases with LEEP and 30 by traditional electrosurgical knife (TEK) as controls. Cervical biopsy was performed in 113 cases of CIN1 and ASCUS, of which 60 cases by LEEP and 53 by cervical biopsy forceps (CBF) as controls. RESULTS Three months after conization of cervix the cytological persistent rate of disease was 6.1% in LEEP group and 6.7% in TEK group (P > 0.05). The operation duration of LEEP is (5.0 +/- 0.5) min, and is much shorter than TEK [(15.0 +/- 0.4) min]. The bleeding and recovery time of the cervix are also shorter (P < 0.01). Three months after cervical biopsy the cytological persistent rate of diseases was only 1.7% in LEEP group, significantly less than that in CBF group (35.8%). CONCLUSION LEEP is indicated to conization of cervix of CIN2-3 and cervical biopsy of CIN1 and ASCUS. It is safe and time-saving. The optimal depth of cervical conization and biopsy was 7 mm and 4 mm respectively in the cervix, and 15 mm and 4 mm respectively in the cervical tube. It can offer intact sample for pathological diagnosis, and has special value for detecting cervical microinvasive carcinoma and local minor carcinoma.
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Affiliation(s)
- M Bian
- Department of Obtestrics and Gynecology, China Japan Friendship Hospital, Beijing 100029, China
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Luo J, Li T, Yuan L, Wang T, Bian M, Zhang M, He X, Zhang J. [A pathological study on the correlation of HPV infection with precancerous cervical lesions]. Zhonghua Bing Li Xue Za Zhi 1999; 28:248-51. [PMID: 11869531] [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: 02/23/2023]
Abstract
OBJECTIVE To study the correlation of cervical condyloma and cancerous lesions with HPV infection. METHODS Cervical biopsies and histopathological examinations were performed on 179 cases which had abnormal cervical cytological smears. PCR was used to study the HPV-DNA of 128 cases and in situ hybridization (ISH) was used to study 10 cases. RESULTS 1. Morphologic observations. Most cervical condyloma cases were of the morphologically flat type (97.7%). Two koilocyte types were observed, the classical, or so called diagnostic koilocyte type (39.7%) and the atypical type (60.3%). Cervical condyloma often occurred together with cervical intraepithelial neoplasia (CIN, 42.5%). 2. PCR HPV DNA subtype analysis. Of the 58 cervical flat condyloma, 5 were PHV6/11 positive (8.6%) and 28 were HPV16/18 positive (48.3%). 86.1% of those with atypical koilocyte and 9.1% of those with diagnostic koilocyte had HPV16/18 infection. 66.7% of the lesions in which condyloma coexisted with CIN(2-3) had HPV16/18 infection. CONCLUSIONS Most cervical condyloma lesions were of the flat type. The appearance of atypical koilocyte is correlated to HPV16/18 infection, which in turn is correlated to the degree of CIN malignancy.
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Affiliation(s)
- J Luo
- Department of Pathology, China-Japan Friendship Hospital, Beijing 100029
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Yuan L, Bian M, Luo J. [Relationship between histopathologic observation of cervical condyloma and human papillomavirus infection]. Zhonghua Fu Chan Ke Za Zhi 1999; 34:354-6. [PMID: 11360614] [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: 04/16/2023]
Abstract
OBJECTIVE To study the relationship between histopathologic changes of cervical condyloma and different subtypes human papillomavirus (HPV) infection. METHODS 158 women with abnormal Pap smears diagnosed by computer assisted cytologic technique (CCT) including 71 cases with atypical squamous cells of undetermined significance (ASCUS), 65 cases with low-grade squamous intraepithelial lesions (LSIL), 17 cases with high-grade squamous intraepithelial lesions (HSIL) and 5 cases with squamous cancers, underwent directed biopsies under colposcopy and were simultaneously detected for HPV6/11, HPV16/18 DNA by polymerase chain reaction (PCR). Koilocytotisis in 73 cases with pathologically proven cervical condyloma were grouped into type I and II according to its atypical degree of nuclei. RESULTS HPV16/18 infection rate among condylomas cases was 86.0%, which was significantly higher than that of type I (16.7%) (P < 0.01). In LSIL with type II koilocytotisis, HPV16/18 infection rate and abnormal mitotic figures (AMFs) occurrence were 85.7%, significantly higher than those in type I koilocytotisis or cervical intraepithelial neoplasia I. CONCLUSIONS Type II koilocytotisis was correlated with HPV16/18 infection. LSIL with type II koilocytotisises, distinct atypical nuclei, also associated with high HPV16/18 rate and AMFs, therefore treatment and follow-up should be more aggressive.
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Affiliation(s)
- L Yuan
- China-Japan Friendship Hospital, Beijing 100029
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25
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Guan X, Lang J, Bian M. [Detection and sequence analysis of the p53 gene mutation in epithelial ovarian cancer]. Zhonghua Fu Chan Ke Za Zhi 1998; 33:165-7. [PMID: 10682487] [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: 02/15/2023]
Abstract
OBJECTIVE To find the characteristics of p53 gene mutation in epithelial ovarian cancer and to analyze the relationship between p53 mutation and FIGO stage. METHODS p53 mutations in exon 5 to 7 were detected by single-strand conformational polymorphism (SSCP) and sequencing technique. RESULTS 8 of 46 tumor tissues demonstrated a SSCP band shift in the region of the gene. All of them have been characterized to represent DNA alterations by sequencing, including 8 point mutations (6 missence, 1 silent mutation and 1 in intron) and a 1-base pair insertion (introducing a stop codon downstream). Overall, 88.9% of mutation were transitions, and most of them are G-->A transitions (7/8, 87.5%). 62.5% of the mutation were found in 175 and 245 codon. The percentage of the mutation in stage I and stage II was 20.0%, and in stage III and stage IV was 16.7% (P > 0.05). CONCLUSION The arising of p53 mutations in ovarian cancer is due to spontaneous error in DNA synthesis and repair. Codon 175, 245 are the two mutational hot spots. There is no relationship between the mutation of p53 gene and FIGO stage in epithelial ovarian cancer.
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Affiliation(s)
- X Guan
- China-Japan Friendship Hospital, Beijing
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26
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Bian M, Fan Q, Huang S, Ma J, Lang J. Amplifications of proto-oncogenes in ovarian carcinoma. Chin Med J (Engl) 1995; 108:844-8. [PMID: 8585978] [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: 01/31/2023] Open
Abstract
Thirty-two cases of ovarian carcinoma, two of normal ovaries, four of benign epithelial ovarian tumor, and three of borderline epithelial ovarian tumor were studied using Southern blot hybridization of DNA. In 15 of the 32 cases of ovarian carcinoma, peripheral lymphocytes were also studied. The amplification rate of C-myc, C-N-ras, C-Ki-ras and C-erbB-2 in ovarian carcinoma were 50%, 44%, 31% and 25% respectively. The amplification of C-Ki-ras and C-N-ras took place chiefly in cases of early stage and those of good differentiation. The amplification of C-N-ras was also found in cases of advanced stage. The amplifications of C-myc and C-erbB-2 were chiefly found in cases above stage III and those of poor differentiation. A total of 83% of the patients who died were found to have amplifications of more than 2 proto-oncogenes, with which the amplification of C-erbB-2 was involved.
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Affiliation(s)
- M Bian
- Department of Obstetrics and Gynecology, China-Japan Friendship PUMC Hospital, Beijing
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Bian M, Fan Q, Huang S. [Amplification of proto-oncogenes C-myc, C-N-ras, C-Ki-ras, C-erbB2 in ovarian carcinoma]. Zhonghua Fu Chan Ke Za Zhi 1995; 30:406-9. [PMID: 7587576] [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: 01/26/2023]
Abstract
OBJECTIVE To observe the amplification rate of C-myc, C-N-ras, C-Ki-ras, C-erbB2 in human ovarian carcinoma. METHODS Southern blot hybridization of DNA was employed, pathological diagnosis was made from fresh tissues. The beta-globin gene was used as an internal control. RESULTS The amplification rate of C-myc, C-N-ras, C-Ki-ras and C-erbB2 in ovarian carcinoma was 50%, 44%, 31% and 25% respectively. The amplification rates of C-myc, C-erbB2 in stage III and IV were all significantly greater than that in stage I (P < 0.01). The amplification rate of C-N-ras in stage I was also significantly greater than that in stage III (P < 0.01). The amplification rate of C-Ki-ras in stage I was significantly greater than that in stage III or IV (P < 0.01). CONCLUSIONS The amplification of C-Ki-ras and C-N-ras took place chiefly in cases of the early stages and in cases with good differentiation. The amplification of C-N-ras was also found in cases of advanced stages. The amplifications of C-myc and C-erbB2 were chiefly found in cases above stage III and in cases with poor differentiation, 83% of the patients who died were found to have amplifications of more than 2 proto-oncogenes, with the amplification of C-erbB2 involved in all of them.
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Affiliation(s)
- M Bian
- China-Japan Friendship Hospital, Beijing
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Zou Y, Bian M, Yiang Z, Lian L, Liu W, Xu X. Comparison of four methods to generate immunoreactive fragments of a murine monoclonal antibody OC859 against human ovarian epithelial cancer antigen. Chin Med Sci J 1995; 10:78-81. [PMID: 7647323] [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: 01/26/2023]
Abstract
In the present study, four different proteases (pepsin, papain, bromelain and ficin) were screened with a murine monoclonal antibody OC859, in order to verify whether different digestion procedures could improve yield and stability of the F(ab')2 or Fab fragments. The yields of F(ab')2 or Fab fragments from digestion with pepsin, papain, bromelain and ficin were respectively 20.3 +/- 2.0%, 50.5 +/- 5.0%, 74.4 +/- 2.7% and 82.8 +/- 10.2% of the theoretical maximum. Immunoreactivity in a noncompetitive solid-phase radioimmunoassay (SPRIA) of the fragments generated by the four proteases were respectively 10 +/- 5%, 36 +/- 5%, 60 +/- 6% and 75 +/- 6% of the intact OC859 IgG. These results suggested that the fragmentation of OC859 with ficin gave a higher yield of superior immunoreactive fragments.
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Affiliation(s)
- Y Zou
- Department of Obstetrics and Gynecology, PUMC Hospital, Beijing
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Yue K, Bian M, Zhu D, Liu W, Siu S. [Serum lipid-associated sialic acid (LSA) in diagnosing and monitoring ovarian cancer]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1995; 17:128-32. [PMID: 7656393] [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: 01/26/2023]
Abstract
Serum from 161 patients with ovarian cancer, 28 patients with benign gynecologic disorders and 22 healthy women, was assayed for levels of tumor marker LSA, which were compared with CA125. The results showed that in the patients with ovarian cancer, the sensitivities of LSA and CA125 for the patients prior to surgery were 83.0% and 92.5%, respectively; the sensitivities for the recurrent patients after surgery were 73.7% and 82.5% respectively. A total sensitivity of 89.5% was obtained by combination of both markers. The positive predictive value of LSA and CA125 for the patients with suspected tumor recurrence were 89.4% and 100%, respectively, and their corroborative rate with the postoperative courses were 94.4% and 100%, respectively. Thus serum assay of LSA, can be used in monitoring patients with ovarian cancer. The technique for determination of serum level of LSA is much more simple and less expensive than the radioimmuno-assay of serum level of CA125.
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Affiliation(s)
- K Yue
- PUMC Hospital, CAMS, Beijing
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Bian M. [The prenatal diagnosis of hemophilia A--the use of PCR and family RFLP analysis]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1993; 15:102-7. [PMID: 7902217] [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: 01/27/2023]
Abstract
Seven families with hemophilia A were analyzed by using the polymerase chain reaction (PCR) technique. Prenatal diagnosis was performed in 4 cases at high risk of hemophilia A. The results suggested that the gene fragment of factor VIII might be amplified by the simple, fast and sensitive PCR technique and is especially suited to prenatal diagnosis using very small amounts of chorionic villi or amniocytes. Restriction fragment length polymorphism (RFLPs) analysis of BclI was also performed. The sample, which could not be diagnosed by BclI, could be analyzed with RFLPs of XbaI. Finally, DNA probe's Southern blotting analysis could be used for those samples which could not be diagnosed with XbaI. 85% of all hemophilia A cases could be diagnosed with our technique.
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