Dr ANNA KOTOWSKA's Outputs (15)

Molecular orientation and stratification revealed in RNA-lipid nanoparticles using Cryogenic Orbitrap Secondary Ion Mass Spectrometry (Cryo-OrbiSIMS) depth profiling (2025)
Preprint / Working Paper
Kotowska, A., Fay, M., Watts, J., Gilmore, I., Scurr, D., Howe, A., Capka, V., Perez, C., Doud, D., Patel, S., Umbarger, M., Langer, R., & Alexander, M. (2025). Molecular orientation and stratification revealed in RNA-lipid nanoparticles using Cryogenic Orbitrap Secondary Ion Mass Spectrometry (Cryo-OrbiSIMS) depth profiling

Lipid nanoparticle RNA (LNP-RNA) formulations are used for the delivery of vaccines and other therapies. RNA molecules are encapsulated within their interior through electrostatic interactions with positively charged lipids. The identity of the lipid... Read More about Molecular orientation and stratification revealed in RNA-lipid nanoparticles using Cryogenic Orbitrap Secondary Ion Mass Spectrometry (Cryo-OrbiSIMS) depth profiling.

Noninvasive Monitoring of Palmitoyl Hexapeptide-12 in Human Skin Layers: Mechanical Interaction with Skin Components and Its Potential Skincare Benefits (2025)
Journal Article
Ligorio, C., Tavasoli, E., Karaman-Jurukovska, N., Ittycheri, A., Kotowska, A. M., Khan, M. H., Scurr, D. J., Gupta, S. A., Moogan, L. V., Emmetsberger, J., Lu, F., German, G. K., Mammone, T., & Mata, A. (2025). Noninvasive Monitoring of Palmitoyl Hexapeptide-12 in Human Skin Layers: Mechanical Interaction with Skin Components and Its Potential Skincare Benefits. ACS Applied Bio Materials, 8(3), 2340-2355. https://doi.org/10.1021/acsabm.4c01816

Self-assembling peptides (SAPs) represent a rich source of building blocks that interact with biological structures. For instance, cosmetic SAPs like Palmitoyl hexapeptide-12 have gained increasing interest for their anti-aging properties. However, t... Read More about Noninvasive Monitoring of Palmitoyl Hexapeptide-12 in Human Skin Layers: Mechanical Interaction with Skin Components and Its Potential Skincare Benefits.

Surface Lipids in Nematodes are Influenced by Development and Species-specific Adaptations (2025)
Journal Article
Kotowska, A. M., Hiramatsu, F., Alexander, M. R., Scurr, D. J., Lightfoot, J. W., & Chauhan, V. M. (2025). Surface Lipids in Nematodes are Influenced by Development and Species-specific Adaptations. Journal of the American Chemical Society, 147(8), 6439-6449. https://doi.org/10.1021/jacs.4c12519

The surface of an organism is a dynamic interface that continually adapts to its environment. In nematodes, the cuticle forms a complex boundary that protects against the physicochemical pressures. However, the precise molecular composition and funct... Read More about Surface Lipids in Nematodes are Influenced by Development and Species-specific Adaptations.

Using Oscillation to Improve the Insertion Depth and Consistency of Hollow Microneedles for Transdermal Insulin Delivery with Mechanistic Insights (2024)
Journal Article
Smith, F., Kotowska, A. M., Fiedler, B., Cerny, E., Cheung, K., Rutland, C. S., Chowdhury, F., Segal, J., Rawson, F. J., & Marlow, M. (2025). Using Oscillation to Improve the Insertion Depth and Consistency of Hollow Microneedles for Transdermal Insulin Delivery with Mechanistic Insights. Molecular Pharmaceutics, 22(1), 316-329. https://doi.org/10.1021/acs.molpharmaceut.4c00942

Microneedles (MNs) offer the potential for discrete and painless transdermal drug delivery, yet poor insertion and dosing consistency have hindered their clinical translation. Specifically, hollow MNs are appropriate for the administration of liquid... Read More about Using Oscillation to Improve the Insertion Depth and Consistency of Hollow Microneedles for Transdermal Insulin Delivery with Mechanistic Insights.

Disassembly of self-assembling peptide hydrogels as a versatile method for cell extraction and manipulation (2024)
Journal Article
Ligorio, C., Martinez-Espuga, M., Laurenza, D., Hartley, A., Rodgers, C. B., Kotowska, A. M., Scurr, D. J., Dalby, M. J., Ordóñez-Morán, P., & Mata, A. (2024). Disassembly of self-assembling peptide hydrogels as a versatile method for cell extraction and manipulation. Journal of Materials Chemistry B, 12(46), 11939-11952. https://doi.org/10.1039/D4TB01575D

Self-assembling peptide hydrogels (SAPHs) are increasingly being used as two-dimensional (2D) cell culture substrates and three-dimensional (3D) matrices due to their tunable properties and biomimicry of native tissues. Despite these advantages, SAPH... Read More about Disassembly of self-assembling peptide hydrogels as a versatile method for cell extraction and manipulation.

084 Cosmetic peptide penetration and assembly in human skin: A label-free approach (2024)
Presentation / Conference Contribution
Ligorio, C., Kotowska, A., Scurr, D., Tavasoli, E., Karaman-Jurukovska, N., Mata, A., Moogan, L., German, G., Lu, F., & Mammone, T. (2024, May). 084 Cosmetic peptide penetration and assembly in human skin: A label-free approach. Presented at Society for Investigative Dermatology (SID) 2024 Meeting, Dallas, TX

Metabolomic and Proteomic Analysis of ApoE4-Carrying H4 Neuroglioma Cells in Alzheimer’s Disease Using OrbiSIMS and LC-MS/MS (2024)
Journal Article
Lu, L., Kotowska, A. M., Kern, S., Fang, M., Rudd, T. R., Alexander, M. R., Scurr, D. J., & Zhu, Z. (2024). Metabolomic and Proteomic Analysis of ApoE4-Carrying H4 Neuroglioma Cells in Alzheimer’s Disease Using OrbiSIMS and LC-MS/MS. Analytical Chemistry, https://doi.org/10.1021/acs.analchem.4c01201

Growing clinical evidence reveals that systematic molecular alterations in the brain occur 20 years before the onset of AD pathological features. Apolipoprotein E4 (ApoE4) is one of the most significant genetic risk factors for Alzheimer’s disease (A... Read More about Metabolomic and Proteomic Analysis of ApoE4-Carrying H4 Neuroglioma Cells in Alzheimer’s Disease Using OrbiSIMS and LC-MS/MS.

Integrating cryo-OrbiSIMS with computational modelling and metadynamics simulations enhances RNA structure prediction at atomic resolution (2024)
Journal Article
Ward, S., Childs, A., Staley, C., Waugh, C., Watts, J. A., Kotowska, A. M., Bhosale, R., & Borkar, A. N. (2024). Integrating cryo-OrbiSIMS with computational modelling and metadynamics simulations enhances RNA structure prediction at atomic resolution. Nature Communications, 15(1), Article 4367. https://doi.org/10.1038/s41467-024-48694-3

The 3D architecture of RNAs governs their molecular interactions, chemical reactions, and biological functions. However, a large number of RNAs and their protein complexes remain poorly understood due to the limitations of conventional structural bio... Read More about Integrating cryo-OrbiSIMS with computational modelling and metadynamics simulations enhances RNA structure prediction at atomic resolution.

Spatially resolved molecular analysis of host response to medical device implantation using the 3D OrbiSIMS highlights a critical role for lipids (2024)
Journal Article
Suvannapruk, W., Fisher, L. E., Luckett, J. C., Edney, M. K., Kotowska, A. M., Kim, D. H., Scurr, D. J., Ghaemmaghami, A. M., & Alexander, M. R. (2024). Spatially resolved molecular analysis of host response to medical device implantation using the 3D OrbiSIMS highlights a critical role for lipids. Advanced Science, 11(15), Article 2306000. https://doi.org/10.1002/advs.202306000

A key goal for implanted medical devices is that they do not elicit a detrimental immune response. Macrophages play critical roles in the modulation of the host immune response and are the cells responsible for persistent inflammatory reactions to im... Read More about Spatially resolved molecular analysis of host response to medical device implantation using the 3D OrbiSIMS highlights a critical role for lipids.

Investigating ApoE4‐mediated metabolic alteration of H4 neuroglioma cells of Alzheimer’s disease (2023)
Presentation / Conference Contribution
Lu, L., Kotowska, A., Kern, S., Fang, M., Rudd, T. R., Alexander, M., Scurr, D., & Zhu, Z. Investigating ApoE4‐mediated metabolic alteration of H4 neuroglioma cells of Alzheimer’s disease. Presented at Alzheimer’s Association International Conference 2023, Amterdam, Netherlands and online

Background
Metabolites and proteins in ApoE4‐carried H4 neuroglioma cells were analyzed to investigate the potential mechanism of the risk gene ApoE4 involved in Alzheimer’s disease (AD).

Method
Metabolomics of ApoE4‐carried and wild‐type H4 cel... Read More about Investigating ApoE4‐mediated metabolic alteration of H4 neuroglioma cells of Alzheimer’s disease.

Toward Comprehensive Analysis of the 3D Chemistry of Pseudomonas aeruginosa Biofilms (2023)
Journal Article
Kotowska, A. M., Zhang, J., Carabelli, A., Watts, J., Aylott, J. W., Gilmore, I. S., Williams, P., Scurr, D. J., & Alexander, M. R. (2023). Toward Comprehensive Analysis of the 3D Chemistry of Pseudomonas aeruginosa Biofilms. Analytical Chemistry, 95(49), 18287-18294. https://doi.org/10.1021/acs.analchem.3c04443

Bacterial biofilms are structured communities consisting of cells enmeshed in a self-generated extracellular matrix usually attached to a surface. They contain diverse classes of molecules including polysaccharides, lipids, proteins, nucleic acids, a... Read More about Toward Comprehensive Analysis of the 3D Chemistry of Pseudomonas aeruginosa Biofilms.

Sustained Release of Dexamethasone from 3D-Printed Scaffolds Modulates Macrophage Activation and Enhances Osteogenic Differentiation (2023)
Journal Article
Majrashi, M., Yang, J., Ghaemmaghami, A., Kotowska, A., Hicks, J. M., & Scurr, D. (2023). Sustained Release of Dexamethasone from 3D-Printed Scaffolds Modulates Macrophage Activation and Enhances Osteogenic Differentiation. ACS Applied Materials and Interfaces, 15(49), 56623–56638. https://doi.org/10.1021/acsami.3c09774

Enhancing osteogenesis via modulating immune cells is emerging as a new approach to address current challenges in repairing bone defects and fractures. However, much remains unknown about the crosstalk between immune cells and osteolineage cells duri... Read More about Sustained Release of Dexamethasone from 3D-Printed Scaffolds Modulates Macrophage Activation and Enhances Osteogenic Differentiation.

Dissociative Host-Dopant Bonding Facilitates Molecular Doping in Halide Perovskites (2023)
Journal Article
Lanzetta, L., Gregori, L., Hernandez, L. H., Sharma, A., Kern, S., Kotowska, A. M., Emwas, A.-H., Gutiérrez-Arzaluz, L., Scurr, D. J., Piggott, M., Meggiolaro, D., Haque, M. A., De Angelis, F., & Baran, D. (2023). Dissociative Host-Dopant Bonding Facilitates Molecular Doping in Halide Perovskites. ACS Energy Letters, 8, 2858-2867. https://doi.org/10.1021/acsenergylett.3c00818

Molecular doping is a promising strategy to fine-tune the electronic properties of halide perovskites and accelerate their implementation as next-generation optoelectronics. However, a deeper understanding of the role of host-dopant interactions in t... Read More about Dissociative Host-Dopant Bonding Facilitates Molecular Doping in Halide Perovskites.

Development of biocide coated polymers and their antimicrobial efficacy (2023)
Journal Article
Watson, R., Maxwell, M., Dunn, S., Brooks, A., Jiang, L., Hill, H. J., Williams, G., Kotowska, A., Nikoi, N. D., Stamataki, Z., Banzhaf, M., Scurr, D., Bryant, J. A., & de Cogan, F. (2023). Development of biocide coated polymers and their antimicrobial efficacy. Nano Select, 4(7), 442-453. https://doi.org/10.1002/nano.202300005

Microbial contamination of plastic surfaces is a significant source of hospital‐acquired infections. To produce antimicrobial surfaces, chlorhexidine was attached to nitrided acrylonitrile butadiene styrene (ABS). The uniformity of chlorhexidine dist... Read More about Development of biocide coated polymers and their antimicrobial efficacy.

Molecular Formula Prediction for Chemical Filtering of 3D OrbiSIMS Datasets (2022)
Journal Article
Edney, M. K., Kotowska, A. M., Spanu, M., Trindade, G. F., Wilmot, E., Reid, J., Barker, J., Aylott, J. W., Shard, A. G., Alexander, M. R., Snape, C. E., & Scurr, D. J. (2022). Molecular Formula Prediction for Chemical Filtering of 3D OrbiSIMS Datasets. Analytical Chemistry, 94(11), 4703–4711. https://doi.org/10.1021/acs.analchem.1c04898

Modern mass spectrometry techniques produce a wealth of spectral data, and although this is an advantage in terms of the richness of the information available, the volume and complexity of data can prevent a thorough interpretation to reach useful co... Read More about Molecular Formula Prediction for Chemical Filtering of 3D OrbiSIMS Datasets.