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Title: DNA nanostructures coordinate gene silencing in mature plants

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]; ORCiD logo [3]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Chemical and Biomolecular Engineering
  2. Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Inst. of Applied Physics, Key Lab. of Interfacial Physics and Technology, Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility; Shanghai Jiao Tong Univ. (China). School of Chemistry and Chemical Engineering
  3. Univ. of California, Berkeley, CA (United States). Dept. of Chemical and Biomolecular Engineering; Innovative Genomics Inst., Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). California Inst. for Quantitative Biosciences; Chan-Zuckerberg Biohub, San Francisco, CA (United States)

Delivery of biomolecules to plants relies on Agrobacterium infection or biolistic particle delivery, the former of which is amenable only to DNA delivery. The difficulty in delivering functional biomolecules such as RNA to plant cells is due to the plant cell wall, which is absent in mammalian cells and poses the dominant physical barrier to biomolecule delivery in plants. DNA nanostructure-mediated biomolecule delivery is an effective strategy to deliver cargoes across the lipid bilayer of mammalian cells; however, nanoparticle-mediated delivery without external mechanical aid remains unexplored for biomolecule delivery across the cell wall in plants. Herein, we report a systematic assessment of different DNA nanostructures for their ability to internalize into cells of mature plants, deliver siRNAs, and effectively silence a constitutively expressed gene in Nicotiana benthamiana leaves. We show that nanostructure internalization into plant cells and corresponding gene silencing efficiency depends on the DNA nanostructure size, shape, compactness, stiffness, and location of the siRNA attachment locus on the nanostructure. We further confirm that the internalization efficiency of DNA nanostructures correlates with their respective gene silencing efficiencies but that the endogenous gene silencing pathway depends on the siRNA attachment locus. Our work establishes the feasibility of biomolecule delivery to plants with DNA nanostructures and both details the design parameters of importance for plant cell internalization and also assesses the impact of DNA nanostructure geometry for gene silencing mechanisms.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1561909
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Vol. 116, Issue 15; ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 121 works
Citation information provided by
Web of Science

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Cited By (8)

How nanocarriers delivering cargos in plants can change the GMO landscape journal June 2019
A self-assembled DNA tetrahedron as a carrier for in vivo liver-specific delivery of siRNA journal January 2020
RNA‐based biocontrol compounds: current status and perspectives to reach the market journal October 2019
Carbon nanotube–mediated DNA delivery without transgene integration in intact plants journal September 2019
Engineering Lipid Membranes with Programmable DNA Nanostructures journal December 2019
High aspect ratio nanomaterials enable delivery of functional genetic material without DNA integration in mature plants journal February 2019
Improved Nucleic Acid Therapy with Advanced Nanoscale Biotechnology journal March 2020
Engineering Multiple Abiotic Stress Tolerance in Canola, Brassica napus journal February 2020

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