Fluorescent imaging is a vital tool in biomedical research, providing high sensitivity, resolution, and real-time imaging capabilities. CD Formulation is committed to advancing liposome technology for in vivo imaging focusing on producing stable fluorescent-labeled liposomes.
Bioimaging has evolved into a highly dependable and sophisticated tool for diagnosing diverse diseases. Over recent decades, substantial advancements in imaging technology have facilitated the successful application of various advanced imaging methods in clinical diagnosis, thereby significantly enhancing human healthcare. As an advanced carrier system, liposomes can be loaded with fluorescent dyes enabling real-time tracking of their distribution and localization within the organism—a critical aspect when investigating targeted delivery to specific tissues or cells. Compared to alternative imaging techniques, fluorescent labeling offers a superior signal-to-noise ratio that contributes to obtaining clearer and more precise images of liposomes within intricate biological settings. Ultimately, fluorescently labeled liposomes enhance our capacity to investigate and comprehend their behavior within living organisms—thus aiding in the improved design and optimization of liposomal formulations across numerous biomedical applications.
Fig.1 In vivo multifunctional fluorescence imaging using liposome-coated lanthanide nanoparticles. (Cheung CCL, et al., 2020)
We offer synthesis of a wide range of fluorescent probes suitable for IR-II imaging, including inorganic nanoparticles (carbon nanotubes, quantum dots, rare-earth-doped nanoparticles), organic molecules (e.g., conjugated polymers), and small molecule dyes. These liposome probes are integral for biomedical applications, especially in preclinical IR-II fluorescence imaging.
Low molecular weight fluorescent dyes (with a typical molecular weight of ≈1,500 Da for near-infrared fluorophore groups) are the most commonly used tracers due to their well-defined chemical structure, tailored optical and chemical properties, and widespread commercial availability. Our available dyes include popular organic fluorescent group families such as rhodamine, BODIPY, indolocarbazole, porphyrin, and phthalocyanine.
By combining fluorescent tracers with targeting components, the positioning and binding effects of the dye in the imaging area can be enhanced, as well as its pharmacokinetics. The targeting component may include antibodies, proteins or peptides, oligonucleotides, sugars, or other molecular templates known for their specific affinity to cellular compartments, cell receptors, biological fluids, or tissues. Utilizing liposomes as a novel strategy to alter the distribution of low molecular weight fluorescent groups in biological systems allows for encapsulation, adsorption, or grafting of fluorescent dyes onto surfaces.
Techniques & Platforms | Details |
Fluorescent-labeled Liposome Probe Technology |
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Targeting Technology |
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Low Molecular Weight Fluorophore Technology |
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Technology: The liposome labeling technology by cancer-fighting drugs with fluorescent properties.
Journal: Sensors
IF: 3.4
Published: 2016
Results: This study aimed to develop a nanodevice for targeting anchored liposomes (with and without cholesterol) and encapsulating anti-cancer drugs and antisense N-myc gene oligonucleotides on their surface. Liposomes encapsulating adriamycin, rosetree, and etoposide were prepared to achieve this objective. Their fluorescence intensity was measured for further characterization, with an estimated encapsulation rate of 16%. The hybridization process of oligonucleotides forming nanostructures was investigated using spectrophotometry and electrochemical methods. It was determined that the concentrations of rosaline, adriamycin, and etoposide attached to the nanostructures in the gold nanoparticle-modified liposomes were 14 µg·mL−1, 5 µg·mL−1, and 2 µg·mL−1 respectively. These studies successfully demonstrated that liposomes are suitable for transporting anticancer drugs and antisense oligonucleotides while effectively inhibiting the expression of the N-myc gene.
Fig.2 Schematic diagram showing the combination of AuNPs with fluorescently labeled modified liposomes. (Yang, J., et al., 2021)
As an expert in nanoparticles, CD Formulation is dedicated to delivering exceptional liposomes for in vivo imaging applications. Please do not hesitate to contact us if you require any assistance.
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