title: Improve bioavailability of Harpin protein on plant use PLGA based nanoparticle.
abstract: Harpins can induce systemic acquired resistance (SAR) pathway on scores of non-host plant, provide protection against a range of pathogens. In this study, we demonstrated that applied recombinant HarpinZ Pseudomonas syringae pv. tomato (rHrpZ) on tobacco with three kinds of methods: infiltrating from micro-pore into leaf; injecting into petiole, and spraying on leaf, there is great difference in assimilation of protein because of the poor osmosis of tobacco leaves, and with multi-application of rHrpZ, the stimulation effect decreased. We prepared poly d,l-lactide-co-glycolide nanoparticles containing rHrpZ (rHrpZ PLGA NPs). To study the drug effect, we analyzed the change ratio of phenylalanine ammonia lyase (PAL) activity and PR-5dB gene expression after administration of rHrpZ and rHrpZ PLGA NPs on tobacco leaves. The results show that rHrpZ could elicit a rapid and transient increase in both PAL activity and PR-5dB expression, but the effect decreased after multi-application. While sprayed rHrpZ PLGA NPs on leaves, both the change ratio of PAL activity and PR-5dB expression were comparatively smooth and durable. Our study suggested that rHrpZ NPs could help protein enter leaf epidermis and cell wall, release rHrpZ in situ continuously, and enhance the bioavailability of rHrpZ.
authors: State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan 430072, PR China.
authors: Zhuo
authors: Z
authors: Liang
authors: Jin-Ping
authors: JP
authors: Xu
authors: Xiao-Lin
authors: XL
authors: Meng
authors: Wei
authors: W
authors: Lu
authors: Jian
authors: J
authors: Wang
authors: Han
authors: H
authors: Xia
mesh_terms: D019540:Area Under Curve; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics / Q000378:metabolism / Q000493:pharmacokinetics* / Q000494:pharmacology; D001682:Biological Availability; D004926:Escherichia coli / Q000235:genetics; D005285:Fermentation; D015870:Gene Expression / Q000187:drug effects; D006639:Histidine / Q000235:genetics / Q000378:metabolism; D019344:Lactic Acid / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D010650:Phenylalanine Ammonia-Lyase / Q000378:metabolism; D018515:Plant Leaves / Q000187:drug effects / Q000378:metabolism; D010940:Plant Proteins / Q000378:metabolism; D011100:Polyglycolic Acid / Q000737:chemistry*; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism / Q000494:pharmacology; D014026:Nicotiana / Q000378:metabolism
chemical_list: D001425:Bacterial Outer Membrane Proteins; D010940:Plant Proteins; D011993:Recombinant Fusion Proteins; C075462:harpin protein, Erwinia amylovora; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D006639:Histidine; D010650:Phenylalanine Ammonia-Lyase