A New species of Viola (Violaceae): V. ulleungdoensis M. Kim &amp; J. Lee

Lee, Jungsim; Choi, Chang-Hak; Han, Koeun; So, Soonku; Hwang, Yong; Kim, Muyeol

doi:10.11110/kjpt.2012.42.3.202

Cited by 11 publications

(9 citation statements)

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“…Subsequently, the cellular uptake and transfection efficiency of PEI in specific cells were increased, and the cytotoxicity in normal cells was decreased. [66][67][68][69] In addition to PEI, another bioreducible polymer, poly(cystamine bisacrylamide-diaminohexane), was also modified with targeting peptides via MAL-PEG-NHS. The targeting polymer showed high cellular uptake and transfection efficiency in the target cell line.…”

Section: Thiol-maleimide Michael Addition Reactionsmentioning

confidence: 99%

Thiol Michael addition reaction: a facile tool for introducing peptides into polymer‐based gene delivery systems

Sun

Liu

Cheng

et al. 2017

Polymer International

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Polymers, as widely used non-viral gene carriers, suffer from high cytotoxicity and relatively low transfection efficiency. Such crucial drawbacks of polymers could be solved by incorporating short and bioactive peptides. The resulting synthetic polymer-peptide conjugates can not only maintain their own special characteristics, but also gain novel characteristics far beyond those of their parent polymer and peptide components to overcome barriers to gene delivery. There are various chemoselective reactions applied in the synthesis of polymer-peptide conjugates, such as Heck, Sonogashira and Suzuki coupling, Diels-Alder cycloaddition, click chemistry, Staudinger ligation, reductive alkylation and oxime/hydrazone chemistry. Among them, thiol-ene click reactions, including thiol-ene radical and thiol Michael addition reactions, are common methods for preparing peptide-polymer conjugates. In this review, we focus on thiol Michael addition reactions, elaborate on their mechanisms and highlight their applications in the synthesis of polymer-peptide conjugates for gene delivery.

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Section: Thiol-maleimide Michael Addition Reactionsmentioning

confidence: 99%

Thiol Michael addition reaction: a facile tool for introducing peptides into polymer‐based gene delivery systems

Sun

Liu

Cheng

et al. 2017

Polymer International

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“…Nakai (1909) reported its distribution in Korea for the first time, and Nakai (1919) reported its distribution in Ulleung-do Island (UE) for the first time. V. ulleungdoensis M. Kim & J. Lee is a Korean endemic species designated as a novel species showing distinctions that it is distributed only in UE, has no adventitious bud unlike V. selkirkii, and grows at low altitude with large leaves and increasing plant size after flowering (Lee et al, 2012). However, studies on V. selkirkii and V. ulleungdoensis have revealed controversial findings because the species are morphologically similar (Yang et al, 2015;Gil and Kim, 2016).…”

Section: Introductionmentioning

confidence: 99%

Comparative genomics of Viola selkirkii and V. ulleungdoensis (Violaceae)

Yoo

2023

Korean J. Pl. Taxon

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Chloroplast genomes of two morphologically similar species, Viola selkirkii and V. ulleungdoensis, were compared. For this comparison, three individuals of V. selkirkiii from Ulleung-do Island (UE), Jeju-do Island (JJ), and Hwacheon-gun (HC) and one of V. ulleungdoensis from UE were collected. According to chloroplast genome sequencing of V. selkirkiii and V. ulleungdoensis, their genomes were found to contain 156,774–157,454 and 157,575 bp, respectively, and a total of 111 genes. In the comparison of the three V. selkirkiii individuals, V. selkirkiii obtained in UE was distinguished from those of the other regions of HC and JJ, and in the comparison of the three V. selkirkiii individuals and one V. ulleungdoensis individual, V. selkirkiii obtained from UE and V. ulleungdoensis were distinguished from the species in the other regions. In addition, a phylogenetic analysis revealed that 32 taxa of Viola formed a monophyletic group (bootstrap support [BS] = 100). The four Viola individuals used in this study (three V. selkirkiii and one V. ulleungdoensis) formed a monophyletic group (BS = 100), which was further divided into two subclades. One subclade comprised V. selkirkiii found in UE and V. ulleungdoensis, whereas the other subclade comprised V. selkirkiii found in HC and JJ. These results support the view of prior studies that V. selkirkiii growing in UE and V. ulleungdoensis are the same species.

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“…[32][33][34] Among these catalysts, the late transition metal catalysts have attracted more attention because of their lower oxophilicity, higher catalytic activity, and better stability in polar solvents. [35][36][37] More importantly, the N,O-chelating-type β-ketoimine metal complexes have been studied extensively owing to the remarkable simplicity of ligand syntheses and rich opportunities for fine-tuning their spatial and electronic properties. These complexes exhibit excellent activity and good resistance to polar groups toward the functionalized vinyl-addition-type PNB in the presence of MAO or B(C 6 F 5 ) 3 .…”

Section: Introductionmentioning

confidence: 99%

Nickel complexes bearing different electron groups on substituted salicylaldnaphthylmethyleneimine ligands: Syntheses and their catalytic performance for (co)polymerization of norbornene

Zhu

Huang

et al. 2020

Applied Organom Chemis

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Novel nickel complexes bearing different electron groups on substituted salicylaldnaphthylmethyleneimine ligands, bis‐(salicylaldnaphthylmethyleneimino)Ni(II) (Ni{(3‐R1)(5‐R2)C6H2(O)CH[N (naphthyl‐CH2)]}2 Ni1: R1 = H, R2 = H; Ni2: R1 = H, R2 = CH3; Ni3: R1 = H, R2 = Br; Ni4: R1 = H, R2 = OCH3; Ni5: R1 = CH3, R2 = H; Ni6: R1 = Br, R2 = H), were synthesized. Ni2, Ni3, Ni5, and Ni6 are clearly characterized by single‐crystal X‐ray diffraction. Co‐polymerization of norbornene (NB) with 5‐norbornene‐2‐methylene butyl ether (BN) was carried out in toluene with the aforesaid complexes as catalyst precursors and B(C6F5)3 as the co‐catalyst. Catalyst activity, molecular weight, thermal stability, solubility, regularity, and optical transparency were investigated, and the mechanism of the electron groups changing catalyst performance is explained. All catalysts show high activity toward co‐polymerization (up to 3.53 × 105 gpolymer molNi−1 h−1). Ni3 shows the highest activity and Ni5 shows the highest insertion rate (up to 37.6%). The obtained poly(NB‐co‐BN)s are confirmed to be vinyl‐addition‐type co‐polymers, and they are noncrystalline. The co‐polymers exhibited excellent thermal stability and processability (Td ≥ 400 °C, Tg < 240 °C), optical transparency (up to 90%), and good solubility.

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A New species of Viola (Violaceae): V. ulleungdoensis M. Kim & J. Lee

Cited by 11 publications

References 1 publication

Thiol Michael addition reaction: a facile tool for introducing peptides into polymer‐based gene delivery systems

Thiol Michael addition reaction: a facile tool for introducing peptides into polymer‐based gene delivery systems

Comparative genomics of <i>Viola selkirkii</i> and <i>V. ulleungdoensis</i> (Violaceae)

Nickel complexes bearing different electron groups on substituted salicylaldnaphthylmethyleneimine ligands: Syntheses and their catalytic performance for (co)polymerization of norbornene

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