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Wang M, Li W, Qiang Q, Ma J, Chen J, Zhang X, Jia Y, Zhang T, Lin L. Clonal Propagation and Assessment of Biomass Production and Saponin Content of Elite Accessions of Wild Paris polyphylla var. yunnanensis. Plants (Basel) 2023; 12:2983. [PMID: 37631194 PMCID: PMC10459934 DOI: 10.3390/plants12162983] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 07/19/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023]
Abstract
Paris polyphylla var. yunnanensis is an endangered medicinal plant endemic to China with great economic importance for the pharmaceutical industry. Two significant barriers to its commercial development are the long duration of its seed germination and the frequency of interspecific hybridization. We developed a method for clonal propagation of Paris polyphylla var. yunnanensis and successfully applied it to selected elite wild plants, which could become cultivar candidates based on their biomass production and saponin content. In comparison to the traditional method, somatic embryogenesis produced an average of 63 somatic embryos per gram of callus in just six weeks, saving 12 to 15 months in plantlet production. The produced in vitro plantlets were strong and healthy and 94% survived transplanting to soil. Using this method, four candidate cultivars with diverse morphologies and geographic origins were clonally reproduced from selected elite wild accessions. In comparison to those obtained with the traditional P. polyphylla propagation technique, they accumulated higher biomass and polyphyllin levels in rhizomes plus adventitious roots during a five-year period. In conclusion, somatic embryogenesis-based methods offer an alternate approach for the rapid and scaled-up production of P. polyphylla, as well as opening up species conservation options.
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Affiliation(s)
- Mulan Wang
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (M.W.); (Q.Q.); (J.M.); (J.C.); (X.Z.); (Y.J.)
| | - Weiqi Li
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (M.W.); (Q.Q.); (J.M.); (J.C.); (X.Z.); (Y.J.)
| | - Qi Qiang
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (M.W.); (Q.Q.); (J.M.); (J.C.); (X.Z.); (Y.J.)
| | - Junchao Ma
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (M.W.); (Q.Q.); (J.M.); (J.C.); (X.Z.); (Y.J.)
| | - Jiaqi Chen
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (M.W.); (Q.Q.); (J.M.); (J.C.); (X.Z.); (Y.J.)
| | - Xudong Zhang
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (M.W.); (Q.Q.); (J.M.); (J.C.); (X.Z.); (Y.J.)
| | - Yanxia Jia
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (M.W.); (Q.Q.); (J.M.); (J.C.); (X.Z.); (Y.J.)
| | - Tie Zhang
- Science and Technology Department, Wenshan University, Wenshan 663000, China
| | - Liang Lin
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (M.W.); (Q.Q.); (J.M.); (J.C.); (X.Z.); (Y.J.)
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Guo H, Cao P, Wang C, Lai J, Deng Y, Li C, Hao Y, Wu Z, Chen R, Qiang Q, Fernie AR, Yang J, Wang S. Population analysis reveals the roles of DNA methylation in tomato domestication and metabolic diversity. Sci China Life Sci 2023; 66:1888-1902. [PMID: 36971992 DOI: 10.1007/s11427-022-2299-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 02/17/2023] [Indexed: 03/29/2023]
Abstract
DNA methylation is an important epigenetic marker, yet its diversity and consequences in tomato breeding at the population level are largely unknown. We performed whole-genome bisulfite sequencing (WGBS), RNA sequencing, and metabolic profiling on a population comprising wild tomatoes, landraces, and cultivars. A total of 8,375 differentially methylated regions (DMRs) were identified, with methylation levels progressively decreasing from domestication to improvement. We found that over 20% of DMRs overlapped with selective sweeps. Moreover, more than 80% of DMRs in tomato were not significantly associated with single-nucleotide polymorphisms (SNPs), and DMRs had strong linkages with adjacent SNPs. We additionally profiled 339 metabolites from 364 diverse accessions and further performed a metabolic association study based on SNPs and DMRs. We detected 971 and 711 large-effect loci via SNP and DMR markers, respectively. Combined with multi-omics, we identified 13 candidate genes and updated the polyphenol biosynthetic pathway. Our results showed that DNA methylation variants could complement SNP profiling of metabolite diversity. Our study thus provides a DNA methylome map across diverse accessions and suggests that DNA methylation variation can be the genetic basis of metabolic diversity in plants.
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Affiliation(s)
- Hao Guo
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
- College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Peng Cao
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
- College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Chao Wang
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
- College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Jun Lai
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
- College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Yuan Deng
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
- College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Chun Li
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
- College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Yingchen Hao
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
- College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Zeyong Wu
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
- College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Ridong Chen
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
- College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Qi Qiang
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
- College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam-Golm, 144776, Germany
| | - Jun Yang
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
- College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Shouchuang Wang
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China.
- College of Tropical Crops, Hainan University, Haikou, 572208, China.
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3
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Wang S, Qiang Q, Xiang L, Fernie AR, Yang J. Targeted approaches to improve tomato fruit taste. Hortic Res 2022; 10:uhac229. [PMID: 36643745 PMCID: PMC9832879 DOI: 10.1093/hr/uhac229] [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] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 09/30/2022] [Indexed: 06/17/2023]
Abstract
Tomato (Solanum lycopersicum) is the most valuable fruit and horticultural crop species worldwide. Compared with the fruits of their progenitors, those of modern tomato cultivars are, however, often described as having unsatisfactory taste or lacking flavor. The flavor of a tomato fruit arises from a complex mix of tastes and volatile metabolites, including sugars, acids, amino acids, and various volatiles. However, considerable differences in fruit flavor occur among tomato varieties, resulting in mixed consumer experiences. While tomato breeding has traditionally been driven by the desire for continual increases in yield and the introduction of traits that provide a long shelf-life, consumers are prepared to pay a reasonable premium for taste. Therefore, it is necessary to characterize preferences of tomato flavor and to define its underlying genetic basis. Here, we review recent conceptual and technological advances that have rendered this more feasible, including multi-omics-based QTL and association analyses, along with the use of trained testing panels, and machine learning approaches. This review proposes how the comprehensive datasets compiled to date could allow a precise rational design of tomato germplasm resources with improved organoleptic quality for the future.
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Affiliation(s)
- Shouchuang Wang
- To whom correspondence should be addressed. E-mail: , or . Tel: 86-0898-66184571. Fax number: 0898-66184571
| | | | - Lijun Xiang
- College of Tropical Crops, Hainan University, Haikou, 570228, China
| | - Alisdair R Fernie
- To whom correspondence should be addressed. E-mail: , or . Tel: 86-0898-66184571. Fax number: 0898-66184571
| | - Jun Yang
- To whom correspondence should be addressed. E-mail: , or . Tel: 86-0898-66184571. Fax number: 0898-66184571
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Sun X, Qiang Q, Yin Z, Wang Z, Ma Y, Zhao C. Monodispersed silver-palladium nanoparticles for ethanol oxidation reaction achieved by controllable electrochemical synthesis from ionic liquid microemulsions. J Colloid Interface Sci 2019; 557:450-457. [DOI: 10.1016/j.jcis.2019.09.043] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 08/23/2019] [Accepted: 09/12/2019] [Indexed: 11/16/2022]
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Wang L, Li Y, Sun Q, Qiang Q, Shen Y, Ma Y, Wang Z, Zhao C. Ultralow Fe
III
Ion Doping Triggered Generation of Ni
3
S
2
Ultrathin Nanosheet for Enhanced Oxygen Evolution Reaction. ChemCatChem 2019. [DOI: 10.1002/cctc.201801959] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Liyuan Wang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi' an 710062 China
| | - Yibin Li
- School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
| | - Qiangqiang Sun
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi' an 710062 China
| | - Qi Qiang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi' an 710062 China
| | - Yuqian Shen
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi' an 710062 China
| | - Yi Ma
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi' an 710062 China
| | - Zenglin Wang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi' an 710062 China
| | - Chuan Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi' an 710062 China
- School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
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Qiang Q, Qin J, Ma Y, Wang Z, Zhao C. Robust Conductive Micropatterns on PTFE Achieved via Selective UV-Induced Graft Copolymerization for Flexible Electronic Applications. ACS Appl Mater Interfaces 2019; 11:5517-5525. [PMID: 30628441 DOI: 10.1021/acsami.8b18209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Fabrication of stable and functional patterns on the surface of PTFE remains a great technical challenge owing to its inertness and high hydrophobicity. Here, we report for the first time the fabrication of functional micropatterns on the PTFE surface by selectively irradiating plasma-treated PTFE coated with the monomer solution. A series of uniform highly dense poly(dopamine methacrylamide) (denoted as PDMA) line patterns with line/pitch widths of 20/20 and 50/50 μm are fabricated on the surface of PTFE (denoted as PDMA-p/PTFE) using dopamine methacrylamide (DMA) as the monomer. Surface graft copolymerization occurs and is attributed to the universal adsorption of DMA and the low grafting energy barrier, compared with the polymerization energy barrier, which is also demonstrated by the DFT calculations. Further, robust well-defined metal Ag or Cu patterns with strong adhesion strength are fabricated on the surface of the PTFE film by electroless deposition and are demonstrated for applications in flexible electronics. The approach is demonstrated to be versatile for fabrication of PDMA micropatterns onto a wide range of polymeric substrates, including polypropylene and acrylonitrile butadiene styrene.
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Affiliation(s)
- Qi Qiang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, and School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , China
| | - Jiaxiang Qin
- State Key Laboratory of Environmental Adaptability for Industrial Products , China National Electric Apparatus Research Institute Co., Ltd , Guangzhou 510663 , China
| | - Yi Ma
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, and School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , China
| | - Zenglin Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, and School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , China
| | - Chuan Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, and School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , China
- School of Chemistry , The University of New South Wales , Sydney , NSW 2052 , Australia
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7
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Hong F, Wu N, Ge Y, Zhou Y, Shen T, Qiang Q, Zhang Q, Chen M, Wang Y, Wang L, Hong J. Nanosized titanium dioxide resulted in the activation of TGF-β/Smads/p38MAPK pathway in renal inflammation and fibration of mice. J Biomed Mater Res A 2016; 104:1452-61. [PMID: 26850371 DOI: 10.1002/jbm.a.35678] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [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: 09/08/2015] [Revised: 12/31/2015] [Accepted: 02/02/2016] [Indexed: 02/04/2023]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) have been demonstrated to damage the kidneys. However, whether chronic nephritis leads to renal fibration or the fibrosis is associated with the activation of TGF-β/Smads/p38MAPK pathway caused by TiO2 NPs exposure is not well understood. Forty male mice were separately exposed to 0, 2.5, 5, or 10 mg/kg body weight TiO2 NPs for 6 months. Renal biochemical functions and levels of TGF-β/Smads/p38MAPK pathway-related markers and extracellular matrix (ECM) expression in the kidneys were investigated. The findings showed that subchronic TiO2 NPs exposure increased levels of urinary creatisix (Cr), N-acetyl-glucosaminidase, and vanin-1, resulted in severe renal inflammation and fibration. Furthermore, TiO2 NP exposure upregulated expression of transforming growth factor-β1 (TGF-β1, 0.07- to 2.72-fold), Smad2 (0.42- to 1.63-fold), Smad3 (0.02- to 1.94-fold), ECM (0.15- to 2.75-fold), α-smooth muscle actin (0.14- to 3.06-fold), p38 mitogen-activated protein kinase (p38MAPK, 0.11- to 3.78-fold), and nuclear factor-κB (0.4- to 2.27-fold), and downregulated Smad7 (0.05- to 0.61-fold) expression in mouse kidney. Subchronic TiO2 NPs exposure induced changes of renal characteristics towards inflammation and fibration may be mediated via TGF-β/Smads/p38MAPK pathway, and the uses of TiO2 NPs should be carried out cautiously, especially in humans. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 1452-1461, 2016.
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Affiliation(s)
- F Hong
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.,Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.,School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China
| | - N Wu
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.,Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.,School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China
| | - Y Ge
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.,Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.,School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China
| | - Y Zhou
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.,Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.,School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China
| | - T Shen
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.,Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.,School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China
| | - Q Qiang
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.,Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.,School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China
| | - Q Zhang
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.,Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.,School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China
| | - M Chen
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.,Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.,School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China
| | - Y Wang
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.,Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.,School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China
| | - L Wang
- Library of Soochow University, Suzhou, 215123, China
| | - J Hong
- Medical College of Soochow University, Suzhou, 215123, China
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9
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Abstract
Mechanical stress is considered to be an important factor in the progression of thoracic ossification of the ligament flavum (TOLF). To elucidate the mechanism underlying mechanical stress-induced TOLF, we investigated the effect of stretching on cultured flavum ligament cells derived from TOLF and non-TOLF patients. We found that the mRNA expression of alkaline phosphatase (ALP), osteocalcin, Runx2, and osterix, but not that of Dlx5 and Msx2, was significantly increased by stretching in TOLF cells. In addition, the effect seems to be finely tuned by stretching-triggered activation of distinct mitogen-activated protein kinase cascades. Specifically, a p38 specific inhibitor, SB203580, significantly inhibited stretching-induced osterix expression as well as ALP activity, whereas a specific inhibitor of ERK1/2, U0126, prevented stretching-induced Runx2 expression. We showed that overexpression of osterix resulted in a significant increase of ALP activity in TOLF cells, and osterix-specific RNAi completely abrogated the stretching-induced ALP activity, indicating that osterix plays a key role in stretching-stimulated osteogenic effect in TOLF cells. These results suggest that mechanical stress plays important roles in the progression of TOLF through induction of osteogenic differentiation of TOLF cells, and our findings support that osterix functions as a molecular link between mechanostressing and osteogenic differentiation.
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Affiliation(s)
- Dongwei Fan
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
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10
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Somasundaran P, Chakraborty S, Qiang Q, Deo P, Wang J, Zhang R. Surfactants, polymers and their nanoparticles for personal care applications. Int J Cosmet Sci 2005. [DOI: 10.1111/j.1467-2494.2005.00257_2.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Somasundaran P, Chakraborty S, Qiang Q, Deo P, Wang J, Zhang R. Surfactants, polymers and their nanoparticles for personal care applications. J Cosmet Sci 2004; 55 Suppl:S1-17. [PMID: 15645085] [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: 05/01/2023]
Abstract
A "touch me not" plant folding up rapidly upon being attacked or microbes depositing on teeth or ocean vessels even under hostile conditions are examples in nature that provide inspiration for developing new classes of personal care release or deposition systems. In this paper, development of such systems based on polymer/surfactant colloid chemistry is explored for achieving transport and release of cosmetic and pharmaceutical molecules at desired rates at desired sites. The successful development of products depends upon understanding and utilizing key interactions among surfactants, polymers and hybrid polymers that are relevant to personal care products. Thus, the absorbed layers or tethers on the particulates can be manipulated for desired dispersion of actives or depositions on substrate under any and all conditions. New hybrid polymers and nanogels have been synthesized for tuning up nanodomains that can extract and deliver at will cosmetics/drugs/toxins by perturbing pH, temperature or ionic strength of the system. Particularly, hydrophobically modified polymers have features of both polymers and surfactants and due to the associative nature of the hydrophobic groups, such polymers can form intramolecular nanodomains for performing carrier functions. Nanogels developed recently include that of polyacrylamide, poly(acrylic acid) and starch nanogels modified for extraction and subsequent slow release of fragrances and overdosed toxic drugs. Binding and release processes were investigated using surface plasmon resonance and fluorescence spectroscopies, powerful techniques for monitoring short term and long term changes.
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Affiliation(s)
- P Somasundaran
- NSF Industry/University Cooperative Research Center for Advanced Studies in Novel Surfactants, Langmuir Center for Colloids and Interface, Columbia University, New York, NY 10027, USA
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Peng B, Du J, Jia Q, Qiao A, Wu Y, Liu X, Qiang Q. [The effect of salvia miltiorrhiza and shengmai on inflammatory mediator and renal function of post-operative patients with obstructive jaundice]. Hua Xi Yi Ke Da Xue Xue Bao 2001; 32:587-9. [PMID: 12528557] [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: 02/28/2023]
Abstract
OBJECTIVE To investigate the effect of salvia miltiorrhiza and shengmai (SS) on inflammatory mediator and renal function in patients with obstructive jaundice (OJ). METHODS This study included three groups: the OJ patients receiving SS for 6 days after operation (the SS group, n = 15); the OJ patients not receiving SS (the OJ group, n = 15); the patients with other hepato-biliary disorders (the Non-OJ group, n = 15). The levels of ET, LPs, TNF-alpha, IL-6, IL-8 and urine RBP, TFR, ALB were measured one day before operation and 1, 4, 7 days after operation. RESULTS The SS group's LPs, TNF-alpha, IL-6, IL-8, ET, RBP, TFR and ALB levels were obviously lower on Day 7 after operation as compared with those on Day 1 after operation (P < 0.05). The urine RBP and ALB levels were significantly lower in the SS group than in the OJ group (P < 0.05). CONCLUSION The post-operative use of salvia miltiorrhiza and shengmai for patients with obstructive jaundice may effectively decrease the postoperative levels of plasma LPs, ET, TNF-alpha, IL-6 and IL-8. At the same time, salvia miltiorrhiza and shengmai may protect renal function by inhibiting inflammatory mediator and improving blood dynamics.
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Affiliation(s)
- B Peng
- Department of Surgery, First Affiliated Hospital, WCUMS, Chengdu 610041, China
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13
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Fu H, Liu X, Yang L, Qiang Q, Huang M. [Effects of transforming growth factor beta 1 on the expression of integrin beta 3 and the activity of focal adhesion kinase on human vascular endothelial cell]. Hua Xi Yi Ke Da Xue Xue Bao 2001; 32:21-3. [PMID: 12733346] [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: 03/02/2023]
Abstract
OBJECTIVE To observe the effects of transforming growth factors beta 1 (TGF beta 1) on the expression of integrin beta 3 and the activity of focal adhesion kinase (FAK). METHODS This study was performed on cultured human endothelial cells (EC) by using cell-ELISA and immunoprecipitation-tyrosine kinase assay respectively. RESULTS Under the stimulus of TGF beta 1, there a dose-dependent increase in the expression of integrin beta 3 chain in the surface of EC. And after the cultured EC were treated with 5 ng/ml or 10 ng/ml TGF beta 1 for 6 or 24 hours, the FAK activity in EC increased significantly as compared with the control group (P < 0.05). CONCLUSION The expression of integrin beta 3 and the activity of FAK on EC were regulated by TGF beta 1, and this regulation may be important in cell adherence, angiogenesis, and in the pathophysiology of atherosclerosis.
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Affiliation(s)
- H Fu
- Department of Cardiology, First Affiliated Hospital, WCUMS, Chengdu 610041, China
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14
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Zhu ZX, Qiang Q, Zhou WB, He DY, Zhang XY, Li N. [Observation of oral glucose-insulin releasing test in liver cirrhosis]. Hua Xi Yi Ke Da Xue Xue Bao 1989; 20:66-9. [PMID: 2676837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In order to investigate the disorders of carbohydrate metabolism and insulin secretion as well as their correlation in patients with liver cirrhosis, we performed an oral glucose tolerance test on 30 patients with liver cirrhosis proven by history, clinical findings, liver function test, radioisotope liver scanning, ultrasonic examination, gastroscopy, barium esophagogram and liver biopsy, compared with 20 healthy controls. Blood glucose and immunoreactive insulin were determined in both groups at 60 min intervals for 180 min. Results showed marked glucose intolerance with peak value 60 min after glucose load in cirrhotic patients with normal fasting blood glucose. Plasma IRI levels were significantly higher in cirrhotic patients than in normal subjects after glucose load (P less than 0.05), especially 180 min after (P less than 0.01). Twelve of 30 cases (40%) showed an abnormal OGTT curve. Of the 12 cases seven (23.3%) showed a diabetic OGTT curve, five (16.7%) an impaired OGTT curve. While eighteen of 30 cases (60%) showed an abnormal OGIRT curve. Among the 18 cases one (3.3%) presented hypersecretic OGIRT curve, twelve (40.0%) with delayed and prolonged peak, and five (16.7%) with hypersecretic OGIRT curve and delayed, prolonged peak.
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