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Vinícius-Araújo M, Shrivastava N, Silva Loures G, Krause RF, Sousa MH, de Santana RC, Bakuzis AF. Integration of 3D Fluorescence Imaging and Luminescent Thermometry with Core-Shell Engineered NaYF 4:Nd 3+/Yb 3+/Ho 3+ Nanoparticles. Inorg Chem 2024; 63:1840-1852. [PMID: 38232297 DOI: 10.1021/acs.inorgchem.3c03410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
The design of rare-earth-doped upconversion/downshifting nanoparticles (NPs) for theoretical use in nanomedicine has garnered considerable interest. Previous research has emphasized luminescent nanothermometry and photothermal therapy, while three-dimensional (3D) near-infrared (NIR) luminescent tracers have received less attention. Our study introduces Nd3+-, Yb3+-, and Ho3+-doped NaYF4 core-shell luminescent NPs as potential multiparametric nanothermometers and NIR imaging tracers. Nd3+ sensitizes at 804 nm, while Yb3+ bridges to activators Ho3+. We evaluated the photoluminescence properties of Nd3+-, Yb3+-, and Ho3+-doped core and core-shell NPs synthesized via polyol-mediated and thermal decomposition methods. The NaYF4:NdYbHo(7/15/3%)@NaYF4:Nd(15%) core-shell NPs demonstrate competitive nanothermometry capabilities. Specifically, the polyol-synthesized sample exhibits a sensitivity of 0.27% K-1 at 313 K (40 °C), whereas the thermally decomposed synthesized sample shows a significantly higher sensitivity of 0.55% K-1 at 313 K (40 °C) in the near-infrared range. Control samples indicate back energy transfer processes from both Yb and Ho to Nd, while Yb to Ho energy transfer enhances Ho3+-driven upconversion transitions in green and red wavelengths, suggesting promise for photodynamic therapy. Fluorescence molecular tomography confirms 3D NIR fluorescence nanoparticle localization in a biological media after injection, highlighting the potential of core-shell NPs as NIR luminescent tracers. The strategy's clinical impact lies in photothermal treatment planning, leveraging core-shell NPs for (pre)clinical applications, and enabling the easy addition of new functionalities through distinct ion doping.
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Affiliation(s)
| | - Navadeep Shrivastava
- Department of Chemistry, Physics and Materials Science, Fayetteville State University, Fayetteville, North Carolina 28301, United States
| | | | - Rafael Freire Krause
- Institute of Physics, Federal University of Goiás, Goiânia, GO 74690-900, Brazil
| | | | | | - Andris Figueiroa Bakuzis
- Institute of Physics, Federal University of Goiás, Goiânia, GO 74690-900, Brazil
- CNanoMed, Federal University of Goiás, Goiânia, GO 74690-631, Brazil
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Kalke P, Linder SS, Beckers P, Helm C. Palps across the tree - the neuronal innervation and development of sensory head appendages in Annelida. Front Neurosci 2024; 17:1310225. [PMID: 38239828 PMCID: PMC10794354 DOI: 10.3389/fnins.2023.1310225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/11/2023] [Indexed: 01/22/2024] Open
Abstract
Polychaetes inhabit a wide variety of habitats and show a great morphological diversity. In this context, a key morphological structure for adapting to their individual lifestyles and ecological niches are the prominent head appendages. In the last years more and more studies focused on the mainly sensory annelid head appendages - namely the antennae, palps, buccal lips and cirri - to unravel the evolutionary origin and phylogeny of Annelida. Unfortunately, comparable data for most of the polychaete families are lacking so far, especially when it comes to features of the larval anterior nervous system and the related innervation and potential homology of these head appendages. In this study, we therefore use an integrative morphological approach including immunohistochemistry and confocal laser scanning microscopy in combination with histological serial sections and 3D-visualizations. With special focus on the palp-like appendages, our data provides a closer look into the development of the larval anterior nervous system and the related sensory structures of three polychaete families representing major groups of the annelid tree of life. Hence, we investigate members of the palaeoannelid Magelonidae as well as basally-branching Amphinomidae, and the pleistoannelid Spionidae forming a taxon deeply nested within Sedentaria. Our comparative data of larval and adult neuronal features support the homology of feeding-palps across the annelid tree. Furthermore, our observations show that larval palps gradually transform into the adult ones while keeping a very similar neuronal innervation pattern. Solely for Amphinomidae a loss of larval palps during ontogenesis has to be assumed. Therefore, our investigations uncover important and so far unknown details in terms of structural homology across Annelida and provide important results necessary for our understanding of annelid evolution.
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Affiliation(s)
- Paul Kalke
- Helm Lab, Johann-Friedrich-Blumenbach-Institute, Animal Evolution and Biodiversity, University of Göttingen, Göttingen, Germany
| | - Samira S. Linder
- Helm Lab, Johann-Friedrich-Blumenbach-Institute, Animal Evolution and Biodiversity, University of Göttingen, Göttingen, Germany
| | - Patrick Beckers
- Institute of Evolutionary Biology and Zooecology, Evolutionary Biology and Ecology, University of Bonn, Bonn, Germany
| | - Conrad Helm
- Helm Lab, Johann-Friedrich-Blumenbach-Institute, Animal Evolution and Biodiversity, University of Göttingen, Göttingen, Germany
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