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Updated: Jun 14, 2026

Examining BCL-2 Family Function with Large Unilamellar Vesicles
Published on: October 5, 2012
[The role of bcl-2 family proteins in psoriasis]
Marija Kastelan1, Larisa Prpić Massari, Ines Brajac
1Klinika za kozne i spolne bolesti Medieinskog fakulteta u Rijeci, KBC Rijeka. marijakastelan@yahoo.com
Abstract:
Apoptosis is a physiological process of programmed cell death responsible for homeostasis in the body. In skin, apoptotic process regulates keratinocyte proliferation and differentiation in that way maintaining homeostasis of epidermal compartment. The process of apoptosis is controlled by proteins of the Bcl-2 family, several proapoptotic (Bax, Bak, Bad) and antiapoptotic (Bcl-2, Bcl-x(L)) proteins. Nowadays, it seems that dysfunctional apoptosis has an important role in the pathogenesis of several skin diseases. Psoriasis is a chronic hypeproliferative inflammatory skin disease characterized by abnormal keratinocyte hyperproliferation and differentiation as well as by decreased keratinocyte apoptosis. Based on recent studies, it is likely that apoptosis has an important role in epidermal hyperproliferation of psoriatic lesion. Having in mind the significance of Bcl-2 family proteins in apoptosis, it is important to elucidate their role in psoriasis pathogenesis. Observed upregulation of antiapoptotic and downregulation of proapoptotic Bcl-2 family molecules in psoriatic skin implies their significance in psoriasis development.
Insights
Dysfunctional apoptosis, or programmed cell death, contributes to skin diseases like psoriasis. Bcl-2 family proteins are key regulators, with altered levels in psoriatic skin suggesting their role in disease development.
Area of Science:
- Dermatology and Cell Biology
- Investigates programmed cell death (apoptosis) and its role in skin homeostasis and disease.
Context:
- Apoptosis is crucial for maintaining epidermal homeostasis by regulating keratinocyte proliferation and differentiation.
- Dysfunctional apoptosis is implicated in the pathogenesis of various skin conditions.
- Psoriasis is a chronic skin disease marked by keratinocyte hyperproliferation and reduced apoptosis.
Purpose:
- To elucidate the role of Bcl-2 family proteins in the pathogenesis of psoriasis.
- To understand how altered apoptosis contributes to psoriatic skin lesions.
Summary:
- Apoptosis, regulated by Bcl-2 family proteins (proapoptotic and antiapoptotic), is vital for skin health.
- In psoriasis, decreased keratinocyte apoptosis and altered Bcl-2 family protein expression (upregulated antiapoptotic, downregulated proapoptotic) are observed.
- These molecular changes suggest a significant role for Bcl-2 family proteins in the abnormal epidermal proliferation characteristic of psoriasis.
Impact:
- Highlights the critical involvement of apoptosis regulation in skin disease.
- Provides insights into the molecular mechanisms underlying psoriasis.
- Suggests potential therapeutic targets within the Bcl-2 protein family for managing psoriatic skin conditions.
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