2D vs. 3D Cell Culture Models for In Vitro Topical (Dermatological) Medication Testing
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Date
2023
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Abstract
Due to ethical concerns regarding animal testing, alternative methods have been in development to test the efficacy and safety of pharmaceutical products and medications, specifically topical (dermatological) medications. Two-dimensional (2D) and three-dimensional (3D) skin cell cultures are examples of in vitro methods used as an alternative to animal testing. The first skin cells cultured were keratinocytes, a type of cell predominantly in the epidermal layer of the skin. However, with differences in skin characteristics and pathophysiology of different skin conditions, various skin cell cultures and models to better mimic these differences have been developed. These cell cultures include not only keratinocytes but also other skin cell types, such as fibroblasts, which are predominantly in the dermal layer of the skin, and certain immune cells and even melanocytes. To have a better understanding of the type of cell cultures used for testing dermatological products, this chapter aims to outline the differences between 2D and 3D skin cell cultures while considering the advantages and disadvantages of each culture. Different types of cell culture models used for wound healing and for inflammatory skin conditions such as psoriasis will also be discussed.
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Science, Life Sciences, Biochemistry