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Xuan Y, Ghatak S, Clark A, Li Z, Khanna S, Pak D, Agarwal M, Roy S, Duda P, Sen CK. Fabrication and use of silicon hollow-needle arrays to achieve tissue nanotransfection in mouse tissue in vivo. Nat Protoc 2021; 16:5707-5738. [PMID: 34837085 PMCID: PMC9104164 DOI: 10.1038/s41596-021-00631-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 09/10/2021] [Indexed: 11/09/2022]
Abstract
Tissue nanotransfection (TNT) is an electromotive gene transfer technology that was developed to achieve tissue reprogramming in vivo. This protocol describes how to fabricate the required hardware, commonly referred to as a TNT chip, and use it for in vivo TNT. Silicon hollow-needle arrays for TNT applications are fabricated in a standardized and reproducible way. In <1 s, these silicon hollow-needle arrays can be used to deliver plasmids to a predetermined specific depth in murine skin in response to pulsed nanoporation. Tissue nanotransfection eliminates the need to use viral vectors, minimizing the risk of genomic integration or cell transformation. The TNT chip fabrication process typically takes 5-6 d, and in vivo TNT takes 30 min. This protocol does not require specific expertise beyond a clean room equipped for basic nanofabrication processes.
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Affiliation(s)
- Yi Xuan
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA.
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA.
| | - Subhadip Ghatak
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Andrew Clark
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Zhigang Li
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
| | - Savita Khanna
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Dongmin Pak
- Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USA
| | - Mangilal Agarwal
- Integrated Nanosystems Development Institute, IUPUI, Indianapolis, IN, USA
| | - Sashwati Roy
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
- Richard L. Roudebush Veterans Administration Medical Center, Indianapolis, IN, USA
| | - Peter Duda
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA
| | - Chandan K Sen
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA.
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA.
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Leigh B, Schalet AP, Paradi E. Neutron- and X-ray-induced mutations at the yellow, white, forked and vermilion loci of Drosophila melanogaster; a preliminary analysis. Mutat Res 1982; 92:133-8. [PMID: 6806649 DOI: 10.1016/0027-5107(82)90217-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Neutrons and X-rays were used to induce mutations at the yellow, white, vermilion and forked loci of Drosophila melanogaster by irradiation of spermatozoa in males. The mutations were characterized for the presence and location of simultaneously induced rearrangements and recessive lethal mutations. F1 females carrying induced visible mutations were identified, described and tested for fertility. The data are given in this paper. The proportions of mutants at the 4 loci, the ratios of whole-body: mosaic mutations, and the fertility of the mutant-carrying F1 females were similar for both types of radiation. Differences were observed between the frequencies of induced visible mutations and the rates of coincident visible and lethal induction. Although the analysis of the mutant chromosomes has not yet been completed, our data can be interpreted as providing confirmation that there are qualitative differences between the genetic effects of neutrons and X-rays.
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Leigh B, Veerkamp-van Baarle AM, Sobels FH, Broerse JJ. Neutrons and X-rays, comparative studies with Drosophila melanogaster. 2. Sex-chromosome loss and partial loss, evidence for the induction of chromatid aberrations in spermatozoa. Mutat Res 1981; 84:107-12. [PMID: 6799814 DOI: 10.1016/0027-5107(81)90054-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Losses and duplications of BSY y+-chromosome markers were induced by irradiation of spermatozoa with either 0.5-MeV neutrons or 100-kV X-rays. These 2 types of radiation are known to induce significantly different ratios of double:single strand breaks in DNA. Exceptional progeny were grouped into 3 categories; no Y marker, one Y marker, and Y marker duplications + mosaics. The last combination consisted of exceptions derived from only chromatid-type rearrangements. All other classes of exceptions may be derived from either chromatid- or chromosome-type rearrangements. Doses of 15 Gy neutrons and 27 Gy X-rays induced identical frequencies of exceptional progeny, giving an RBE of 1.8. The ratios of the 3 classes of exceptions were similar for both types of radiation. This observation can be interpreted as indicating that, under the conditions used here, chromosome and chromatid rearrangements are not derived directly from double and single DNA strand breaks, respectively.
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