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Gujrati, Vipul; Prakash, Jaya; Malekzadeh-Najafabadi, Jaber; Stiel, Andre; Klemm, Uwe; Mettenleiter, Gabriele; Aichler, Michaela; Walch, Axel; Ntziachristos, Vasilis
Nature communications, 03/2019, Letnik: 10, Številka: 1Journal Article
Advances in genetic engineering have enabled the use of bacterial outer membrane vesicles (OMVs) to deliver vaccines, drugs and immunotherapy agents, as a strategy to circumvent biocompatibility and large-scale production issues associated with synthetic nanomaterials. We investigate bioengineered OMVs for contrast enhancement in optoacoustic (photoacoustic) imaging. We produce OMVs encapsulating biopolymer-melanin (OMV ) using a bacterial strain expressing a tyrosinase transgene. Our results show that upon near-infrared light irradiation, OMV generates strong optoacoustic signals appropriate for imaging applications. In addition, we show that OMV builds up intense heat from the absorbed laser energy and mediates photothermal effects both in vitro and in vivo. Using multispectral optoacoustic tomography, we noninvasively monitor the spatio-temporal, tumour-associated OMV distribution in vivo. This work points to the use of bioengineered vesicles as potent alternatives to synthetic particles more commonly employed for optoacoustic imaging, with the potential to enable both image enhancement and photothermal applications.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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