Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 37 for “"fluorescence lifetime imaging microscopy"”.
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Computational Dead Time Correction in Fluorescence Lifetime Imaging Microscopy (FLIM)
<p>Fluorescence Lifetime Imaging Microscopy (FLIM) is a crucial tool in biomedical research. It can visualize and measure molecular interactions and cellular processes by analyzing the fluorescence decay of molecules in biological samples. Unlike traditional imaging methods based on fluorescence …
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Development of fluorescence lifetime imaging microscopy techniques for analysis of single extracellular vesicles
… This thesis presents the first use of two-photon fluorescence lifetime imaging microscopy (FLIM) to characterize the free and protein-bound reduced forms of nicotinamide adenine dinucleotide and nicotinamide adenine dinucleotide phosphate (NAD(P)H) content of EVs derived from cells, human urine, …
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Applying Flinet Deep Learning Model to Fluorescence Lifetime Imaging Microscopy for Lifetime Parameter Prediction
Fluorescence Lifetime Imaging Microscopy (FLIM) is essential in biomedical research, providing insights into cellular mechanisms and disease diagnosis by measuring the time molecules remain in an excited state before emitting a photon. Analyzing FLIM data is challenging due to the complex, …
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Fluorescence lifetime imaging microscopy to study protein aggregation in the context of neurodegenerative diseases
… presented in this thesis involves the use of fluorescence lifetime imaging microscopy (FLIM) and other biophysical techniques to elucidate the molecular mechanisms that underlie different amyloid-associated neurodegenerative dis- eases. Currently, there is no prevailing therapeutic option for …
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Determining S6K1 localisation and interactions with mTORC1 in live cells using fluorescence lifetime imaging microscopy
… and adiposity. Using GFP technology and advanced imaging, localisation of S6K1 has been established (47% nucleus and 53% cytoplasm). S6K1 strongly (Δτ=200 ps) interacts with the complex scaffold protein, raptor, and when the presence of the latter protein is increased, S6K1 translocates to the …
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Optimization of fluorescence lifetime imaging microscopy (FLIM) for studying the activity of enzymes in live cancer cells
… describes the process of optimizing a Fluorescence Lifetime Imaging Microscopy (FLIM) system in order to observe the dynamics of enzymes in live cancer cells. The enzyme studied throughout this research is Membrane Type 1 Matrix Metalloproteinase (MT1-MMP) which is a membrane-bound …
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Multi Scale Fluorescence Studies: The Spinning Disk Confocal Fluorescence Lifetime Imaging Microscopy & Single Molecule Nano-Metronome & Single Molecule Study of Tetramethyrhodamine -Dna Interaction
… absence of any biological activities of DNA, the fluorescence emission of TMR undergoes multiple slow transitions among at least four different fluorescence states. While the actual number of fluorescence states and therefore the actual rates of transition among them remains open for discussion …
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Multi Scale Fluorescence Studies: The Spinning Disk Confocal Fluorescence Lifetime Imaging Microscopy &Amp; Single Molecule Nano-Metronome &Amp; Single Molecule Study of Tetramethyrhodamine-Dna Interaction
… The first part involves the frequency domain fluorescence lifetime imaging microscopy (FLIM) and an improvement of FLIM setup to decrease the out of focus background fluorescence without drastically sacrificing the data acquisition speed while taking fluorescence lifetime data. The setup …
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Early selection of Chinese Hamster Ovary (CHO) cells using simultaneous label-free autofluorescence multi-harmonic (slam) microscopy and Fluorescence Lifetime Imaging Microscopy (FLIM) for biopharmaceutical cell line development
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Development of Methods for Structure and Function Determination in Living and Fixated Cells on the Single-Molecule Level Based on Coincidence Analysis and Spectrally-Resolved Fluorescence Lifetime Imaging Microscopy [SFLIM]
… For this purpose an algorithm based on confocal imaging microscopy has been developed, which facilitates the separation of colocalized dyes by their fluorescence lifetimes and spectral characteristics. The accuracy and applicability of the method was in this work using biological calibration …
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Compressed fluorescence lifetime imaging microscope
Fluorescence lifetime imaging microscopy (FLIM) has been extensively applied in wide biomedical applications from single cell studies to medical diagnosis. While the state-of-the-art FLIM techniques are highly sensitive to biological dynamics such as fluorescence resonance emission transfer (FRET), …
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Gold nanoparticle cellular uptake and its implications for cancer therapy
… of AuNP uptake by performing multiphoton fluorescence-lifetime imaging microscopy (MP-FLIM) on live cells. Using this technique and subsequent analysis methods multiple datasets were obtained showing the association of AuNPs with the cell membrane in real-time. This study then goes on to …
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Towards The Development Of Intrinsically Fluorescent Unnatural Amino Acids For In Vivo Incorporation Into Proteins
… several previous biophysical studies involving fluorescence polarization (FP) and Förster resonance energy transfer (FRET) measurements, but to date was limited to solely E. coli expressed proteins. This thesis work will continue to explore Acd’s use in in vitro measurements from E. coli …
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Graphene Microelectrode Arrays to Combine Electrophysiology with Fluorescence Imaging of Amyloid Proteins
… Two techniques used in amyloid research are fluorescence microscopy, to map the protein location and aggregation state, and electrophysiology, to examine the effect of the proteins on neurons. To enable these techniques to be combined, a transparent graphene microelectrode array (MEA) was …
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Label-free multiphoton microscopy for imaging transient metabolic dynamics in living cells and tissue
… of pathological conditions. While clinical imaging tools have emerged to probe metabolism at the tissue and organ level, the tools to probe metabolic dynamics at the cellular level have been slow to develop. This thesis represents a step toward realizing one such tool through the use of …
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Advanced optical microscopy toolkits for non-invasive imaging in oncology
… stress in ex vivo human skin cultures by imaging endogenous and exogenous fluorescent compounds using two-photon excitation fluorescence (TPEF) and fluorescence lifetime imaging microscopy (FLIM); (2) visualizing water and lipid distribution as well as cellular morphology using coherent …
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Study on gold nanoparticles for biological applications
… of biological research, especially in biological imaging and sensing due to their unique physical properties. Fluorescence is a highly-sensitive, non-invasive biological study method and has been widely used in a variety of research topics. The aim of this thesis is to study the unique optical …
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Flourescent Biosensor-Based, Cdc42 Activity Imaging For Understanding the Regulation of Epidermal Growth Receptor (EGFR) Signalling in Head and Neck Cancer
… and ErbB-family targeted therapy.Using optical imaging techniques such as, Fluorescence Resonance Energy Transfer (FRET) and Fluorescence Lifetime Imaging Microscopy (FUM) I have analysed Cdc42 activity in Squamous Carcinoma Cell Lines after EGFR tyrosine kinase inhibitor (TKI) treatment, using …
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Metabolic-response assessment of metastatic murine breast cancer in 2D and 3D cultures using intrinsic NADH as a natural biomarker
… this hypothesis, we employed two-photon (2P) fluorescence lifetime imaging microscopy (2P-FLIM) and time-resolved 2P-fluorescence anisotropy of the reduced nicotinamide adenine dinucleotide (NADH) in metastatic murine breast cancer cells 4T1. In addition, we investigated the cellular metabolic …
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Time Resolved Light Sheet Microscopy
… Time-correlated single photon counting fluorescence lifetime imaging microscopy is just one of the tools used to carry out this line of research. Here we demonstrate a direct interaction between two proteins involved in gene regulation and expression; p21 and FMN2. Furthermore, we also …
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