InflammaSkin® human psoriasis model

The only T-cell driven psoriasis skin model

The InflammaSkin® psoriasis model

A unique platform to study anti-psoriasis drugs

Today’s preclinical skin models may closely mimick the inflammatory features of psoriasis, but they often lack tissue complexity and immune cell diversity. Moreover, they generally don’t allow testing the subcutaneous delivery of therapeutic compounds. The InflammaSkin® human psoriasis model is a unique, T-cell driven skin inflammation model that allows to efficiently study the response of real human skin to anti-psoriasis drugs and compounds after topical or subcutaneous administration. Below you’ll find a quick overview of the model’s features and benefits.

Standardized

InflammaSkin® models are standardized human skin models that allow for reproducible research and testing on anti-psoriasis drugs.

Immunocompetent

The models are alive, functional and immunocompetent. They contain all structural and immunological cell types and appendages for relevant data.

T-cell activated

InflammaSkin® models are currently the only ex vivo psoriasis skin model on the market with a T-cell driven inflammation featuring the Th1/Th17 phenotype.

Platform

InflammaSkin® models are suitable for prophylactic and therapeutic biologics as well as small molecule drugs, which require topical or subcutaneous administration.

InflammaSkin psoriasis skin model

Live response from real human skin

A full week of testing opportunities

The InflammaSkin® model is composed of real human skin that is kept alive using a nourishing gel matrix. Its technology is based on our patented NativeSkin® platform, which allows us to keep donated human skin alive for 7 days after surgery and give our customers a week-long window of testing opportunities. The InflammaSkin® model always contains real human epidermis and dermis and may also contain the associated adipose tissue to allow for subcutaneous injection, depending on your needs.

The only T-cell driven human psoriasis model

Unique technology for reliable data

For the purpose of anti-psoriasis drug studies, the InflammaSkin® model’s resident T-cells are activated in situ by an IP-protected cocktail. The models are then cultured for up to 7 days with a chemically-defined culture medium supplemented with a pro-inflammatory cytokine cocktail to induce Th17/Th1 T-cell polarization.

Inflammaskin psoriasis model t-cell activation process

Scientific validation in terms of tissue integrity

Characterization of histological changes after induction of Th17/Th1 inflammation

Hematoxylin and eosin staining was performed on 5 µm-thickness skin cross-sections. The histological analysis of the InflammaSkin® model shows epidermal anomalies that are characteristic of psoriasis, in contrast to non-inflamed ex vivo skin models and the same model treated with the pro-inflammatory cocktail. All images are representative of the whole sample. Scale bar is 100 µm.

No induction

Psoriasis model No induction H&E

Healthy ex vivo human skin model cultured under basal conditions.

No T-cell activation

Psoriasis Model No T Cell Activation H&E

Skin model cultured in the presence of a Th17/Th1 polarization cocktail but without T-Cell activation.

InflammaSkin®

InflammaSkin H&E Psoriasis model

InflammaSkin® Model with T-Cell activation cocktail, cultured in the presence of a Th17/Th1 polarization cocktail for 7 days.

Scientific validation in terms of epidermal activation

Expression of pro-inflammatory markers in InflammaSkin®

Epidermal activation is shown by the over-expression of the psoriasis-associated pro-inflammatory markers Keratin 16 (K16) and psoriasin (S100A7). Anti-S100A7 and anti-K16 immunofluorescence staining procedures were performed on 5 µm-thickness skin cross-sections. Red and cyan signals indicate a positive signal and DAPI-counterstain nuclei respectively. The dotted white lines represent the epidermal-dermal junction. Epidermal and dermal compartments are located above and below the dotted line respectively. All images are representative of the whole sample. Scale bar is 100 µm.

No induction

Skin model pro-inflammatory marker S100A7 no induction

4 – Presence of pro-inflammatory marker Psoriasin (S100A7) in a healthy ex vivo skin model cultured under basal conditions.

Skin model pro-inflammatory marker K16 no induction

5 – Presence of pro-inflammatory marker Keratin 16 (K16) in a healthy ex vivo skin model cultured under basal conditions.

No T-cell activation

Skin model pro-inflammatory marker S100A7 no t-cell activation

6 – Presence of pro-inflammatory marker Psoriasin (S100A7) in a skin model cultured in a Th17/Th1 polarization cocktail but without T-Cell activation.

Skin model pro-inflammatory marker K16 no t-cell activation

7 – Presence of pro-inflammatory marker Keratin 16 (K16) in a skin model cultured in a Th17/Th1 polarization cocktail but without T-Cell activation.

InflammaSkin®

Inflammaskin model pro-inflammatory marker S100A7 t-cell activation

8 – Presence of Psoriasin (S100A7) in an InflammaSkin Model with T-Cell activation, cultured in a Th17/Th1 polarization cocktail for 7 days.

Inflammaskin model pro-inflammatory marker K16 t-cell activation

9 – Presence of Keratin 16 (K16) in an InflammaSkin Model with T-Cell activation, cultured in a Th17/Th1 polarization cocktail for 7 days.

Scientific validation in terms of cytokine levels

Release of pro-inflammatory cytokines after 7 days of culture

The analysis of cytokine levels in culture media at day 7 shows sustained secretion of IL-17A and IL-22 (IFN-γ and TNF-α as well as the lack of IL-4 expression, data not shown) compared to non-inflamed ex vivo skin models, supporting successful activation and differentiation of Th17/Th1 cells.

The models were either cultured under basal conditions (no induction), in the presence of the Th17/Th1 polarization cocktail (no T-Cell activation) and injected with activation cocktail and cultured in the presence of the Th17/Th1 polarization cocktail (InflammaSkin®) for 7 days. Protein levels of IL-17A (A), IL-22 (B), INF-γ (C) were measured by ELISA (IL-22) and MSD in supernatant samples harvested after 7 days of culture. Lowest limit of detection (LLOD) is indicated by a dotted line for each cytokine. Data are expressed as mean value +/- SEM of pg/mL of secreted cytokines models obtained from 3 different donors. **P<.01

Inflammaskin scientific validationIL-17 A-100

IL-17A protein levels in a healthy NativeSkin® model, a model cultured in the Th17/Th1 polarization cocktail and the InflammaSkin® model with T-Cell activation cultured in the Th17/Th1 polarization cocktail.

Inflammaskin scientific validation IL-22-100

IL-22 protein levels in a healthy ex vivo skin model, a model cultured in the Th17/Th1 polarization cocktail and the InflammaSkin® model with T-Cell activation cultured in the Th17/Th1 polarization cocktail.

Inflammaskin scientific validation IFN-g-100

INF-γ protein levels in a healthy ex vivo skin model, a model cultured in the Th17/Th1 polarization cocktail and the InflammaSkin® model with T-Cell activation cultured in the Th17/Th1 polarization cocktail.

A wide range of applications

We pick the right method to assess your anti-psoriasis treatment

The InflammaSkin® model can be used to assess the efficacy of anti-inflammatory drugs targeting T-cells as well as more specific psoriasis targets such as IL-17, IL-22 and TNF-α. The model is suitable to evaluate both prophylactic (administration at day 0) and therapeutic compounds and treatments (administration at day 3). Evaluation of efficacy can be performed following topical or subcutaneous administration, depending on your needs. Don’t hesitate to contact us for more information.

Topical application

Subcutaneous-injections-300x300

Subcutaneous injection

Available as an in-house service only

InflammaSkin® is only available as an in-house service for a wide range of psoriasis and anti-inflammatory studies. Don’t hesitate to contact us for more information.

Scientific publications on InflammaSkin®

February 2021 - Calcipotriol/Betamethasone Dipropionate Foam Inhibits Th17 Cytokine Secretion and Improves Epidermal Barrier Markers in a Human Th17 Skin Inflammation Model

October 2020 - Development and characterization of a human Th17 driven ex vivo skin inflammation model

January 2020 - Translational drug discovery and development with the use of tissue-relevant biomarkers: Towards more physiological relevance and better prediction of clinical efficacy

October 2019 - Improvements of both inflammation and skin barrier in a human Th17 skin inflammation model by topical treatment with fixed-dose combination calcipotriene/betamethasone dipropionate foam

September 2019 - Poster - Evaluation of pharmacological responses to subcutaneous injection of adalimumab in InflammaSkin®, a full-thickness human ex vivo skin model reproducing key features of psoriatic lesions

September 2017 - Poster - Evaluation of pharmacological responses in a fully human ex vivo skin model following in situ T cell activation with Th17/Th1 psoriasis-like phenotype

Need more information?

InflammaSkin® is only available as an in-house service but we can help you move your research forward and conduct custom studies in full respect of your requirements. Don’t hesitate to contact us for more information.