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Humanize your research with Alvetex® bioengineered 3D tissue services

Human tissue testing stands as an indispensable element in the realm of drug discovery and development, serving as a cornerstone for evaluating the safety and efficacy of pharmaceuticals destined for human consumption. Human data holds paramount importance in forecasting clinical success, as positive outcomes within human test systems can substantially enhance the commercial potential of drug candidates.

To better translate preclinical data to the clinic, researchers turn to our contract testing services in human fresh tissues or engineered 3D human tissues.

REPROCELL's 3D bioengineered human tissues, produced using Alvetex®, complement our fresh tissue assays by accurately recapitulating human biology in longer duration experiments, allowing investigations into mechanisms that are key to many drug targets including fibrosis, wound healing and epithelial barrier disruption.

Our human tissue models are also useful for testing other substances including chemicals, consumer products, cosmetics and pollutants.

Background image: full-thickness human skin bioengineered on Alvetex Scaffold.

Our assay services using Alvetex bioengineered tissue models

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IBD model

REPROCELL's inflammatory bowel disease (IBD) tissue model is the most advanced commercially available bioengineered model of IBD. The tissues mimic key features of the inflamed GI mucosa of Crohn's and ulcerative colitis patients, allowing investigations into inflammation, barrier integrity and fibrosis.

  IBD model

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IPF model

Our idiopathic pulmonary fibrosis (IPF) model is the most effective model available for investigation of drugs to treat pulmonary fibrosis. The model uses human primary lung fibroblasts from patients with IPF and an alveolar type II cell line to create a 3D model of the lung. This is the most sophisticated in vitro tissue modelling fibrotic lung.

  IPF model

07AUG20 full thickness skin epidermis dermis microscopy histology

Skin model

Our cutting-edge full-thickness engineered skin model, constructed from human primary cells, represents the forefront of the market for drug discovery assays. This model consists of a dermal layer supporting a stratified keratinized epithelial layer, providing a highly accurate representation of human skin. Our comprehensive skin model offers a variety of investigative services tailored to meet the diverse needs of drug discovery research.

  Skin model

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Neurite model

Measuring neurite outgrowth allows for the evaluation of the impact of test drugs on neurite formation or toxicity. Our translational neurite outgrowth model integrates Alvetex scaffolds with iPSC-derived human neurons, resulting in the formation of a mature neuronal network complete with synaptic connections. This innovative model provides a comprehensive platform for assessing drug effects on neuronal function and viability.

  Neurite model

How can REPROCELL’s human tissue model accelerate your research?

Employing human tissue represents the most accurate simulation of drug behavior in patients. Cultivating human tissue within Alvetex scaffolds facilitates the creation of authentic 3D cell tissue architecture, providing an accurate portrayal of drug effects, as well as the effects of other test substances like chemicals or cosmetics, within human tissue.

Alvetex supports cells to build a wide range of complex 3D tissues, with structures and functions to match that of the human body. Our contract research services, conducted at our laboratories in the UK, offer valuable insights into crucial markers for human disease, the effects of drugs over extended exposure periods, and comparisons between healthy and diseased tissue models using your test substance.

Talk with our scientists today to discover how our fee-for-service model can save time and money by generating valuable human tissue data, growing the  value of your IP and increasing the likelihood of commercial success.

REPROCELL can compare responses in healthy and diseased tissues

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Above: ⍺SMA and FAP expression are markers of fibroblast activation, associated with enhanced ECM deposition in fibrotic tissues.
In human IPF upregulation of these activation proteins is associated with enhanced ECM deposition.

Achieve more meaningful results with

3D human tissue models

The benefits of 3D cell culture over 2D

Comparing cel culture techniques - traditional 2D

Traditional 2D cell culture puts stresses on cells, resulting in a flattened cell morphology that impairs many cellular functions. This modification of normal cell behaviour often generates inaccurate and misleading data.

Comparing cel culture techniques - Alvetex 3D

Alvetex 3D cell culture eliminates these stresses and artificial responses. Cells are able to maintain their normal shape and internal structure and they can form complex interactions with adjacent cells as they would in vivo, enabling the creation of complex 3D human tissues.

Electron microscope images showing how a cell deforms to adapt to a 2D tissue culture environment, versus how it appears in Alvetex 3D cell culture.

Cell 2D-form electron microscope image

Cell 3D-form electron microscope image

Alvetex bioengineered tissue models are made by growing multiple cell types together to recreate native tissue architecture, using the innate signalling mechanisms between the cells to lead the formation of a biologically-accurate structure. These in vitro experimental systems, self-assembled in controlled laboratory conditions, also enable scientists to obtain useful information about in vivo biological processes.

Why use our 3D bioengineered tissue models?

IBD Model

This complex tissue model comprising fibroblasts, epithelial cells and immune cells, and mimics several of the molecular, cellular, and immunological features of IBD. For example, there is reduced trans-epithelial resistance (TEER) in the stimulated (inflamed) model, and evidence of hyperproliferation and pseudo-stratification of the epithelial layer, which matches observations made in IBD tissues. The model also displays upregulation of  inflammatory mediators and markers of fibrosis, which can be modulated by incubation of the model with drug treatments.

The image shows MMP-9 (green) accumulating at the epithelial/ stromal interface of the 3D IBD model; MMP-9 is a marker of inflammation in IBD and is observed in ulcerative colitis tissues of patients.

  IBD model

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IPF Model

Our IPF model and healthy lung models offer the ability to investigate drug efficacy of novel treatments for fibrosis. IL-6/8/1β are elevated in the models, reflecting human IPF disease pathophysiology, and the models can be stimulated by the inclusion of TGF-beta or bleomycin. Cytokines such as IL-6/8/1β are thought to be secreted by alveolar epithelial cells following repeated micrograde injuries, which subsequently act upon the underlying fibroblast compartment. The IPF model shows elevated gene expression for IL-6/8/1β, relative to the healthy lung models, and increased ECM deposition, turnover and fibroblast activation, allowing the testing of anti-fibrotic compounds over many days in culture.

  IPF model

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Skin Model: REPROSKIN™

We have created the market leading full thickness skin model, comprised of a multi-layer tissue, including a fully developed stratum corneum within the epidermis and a dermal layer. Our model is suitable for a wide range of studies on aspects such as skin barrier, ageing skin, pigmented skin and neurosensory skin, with variations of the model including additional cell types such as melanocytes or Langerhans cells.

To create REPROSKIN, fibroblasts secrete endogenous extracellular matrix within the Alvetex® scaffold, which is organised in a transverse and longitudinal manner, similar to in vivo skin. A stratified keratinised layer is grown on top, generating a basement membrane between the epidermis and dermis.

  Skin model

Human skin model made using Alvetex looks like real human skin

Neurite Outgrowth Model

REPROCELL has developed an Alvetex 3D assay for the inhibition and recovery of neurite outgrowth. REPROCELL's neuro cells, which are available as healthy wild-type (image A) and Alzheimer's disease patient-derived(image B), are incorporated into the model, to model pathological changes in vitro. This gives insight to neurodegenerative diseases that derive from neurite inhibition and enables testing of compounds that might influence neurite outgrowth.

  Neurite outgrowth model

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Inquire about our bioengineered 3D tissue models and services