Our new offering has successfully demonstrated the feasibility of creating a 3D model of the blood retinal barrier while expressing key physiological and biological characteristics.
OUR MODEL IS ABLE TO MIMIC:
1) Interactions between retinal microvascular endothelial cells and pericytes
2) Proper barrier function of the retinal microvasculature
3) Expression of proper cell type-specific markers
4) Responsiveness to treatments known to affect tissue permeability
Service Offerings
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Ideal for screening of compound and gene libraries, our model can help companies accelerate results and save money to assess the efficacy of drug-like molecules during the hit-to-lead or lead-optimization stage, to triage lead compounds. The model can also be used to discover and evaluate the up or down regulation of the target proteins or receptors of interest.
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We provide a wide range of custom designed studies incorporating biological and physiological analyses (e.g. Western Blot, PCR, ELISA, immunocytochemistry, etc.) of pre- and post drug treated 3D tissue.
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In support of preclinical and clinical development efforts, our models can be used to identify a drug’s therapeutic window and conduct, to optimize and refine efficacy studies to support successful IND filings, and for commencement of clinical studies. Our dose response and dose ranging studies can help companies save time and money in the clinic with more precisely targeted trials.
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Our validated culture system expresses a multitude of relevant biomarkers, proteins, and receptors that are normally found in in vivo human retinal microvasculature. This provides the biologically relevant environment for researchers to validate the Mechanism of Action of their targets of interest using both normal and/or diseased tissue alongside their therapeutic. The model can be maintained under proper physiological conditions for weeks, making it amenable to long-term treatment protocols and validation.
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We fill the need for assays that can provide relevant insight into safety and toxicity issues early in the drug development process. Ocular safety and toxicity testing extends beyond pharmaceuticals to the wider range of chemicals, excipients, and compounds that can impact human health.
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Our models can be customized to mimic tissue- or organ-specific vascular dysfunction that is relevant for the vascular diseases of interest including macular edema, diabetic retinopathy, and many others.
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Barrier permeability is dependent on 3 aspects:
1) Tight junction complexes (cell-cell contacts)
2) Paracellular diffusion
3) Transcellular endocytosis
The impact of pericytes on vascular permeability is mimicked in Humonix’s 3D BRB model by implementing human primary pericytes. This 3D tissue model is compatible with various assays, methods, and techniques that can assess the barrier function. Markers related to barrier permeability such as CD31, MFSD2, ZO1, amongst others, are enhanced in the 3D BRB model, allowing for more reliable and relevant barrier function analysis.