Apoptosis in physiological and pathological skin: implications for therapy.

Area of Science:

• Cell Biology
• Immunology
• Dermatology

Background:

• Apoptosis, a programmed cell death, is vital for multicellular life, regulating development, immunity, and preventing mutations.
• Dysregulated apoptosis is implicated in various diseases, including cancer, inflammatory conditions like atopic dermatitis, and autoimmune disorders such as lupus erythematosus.
• Specific molecular pathways, including Bcl-2 and CD95L, are involved in inhibiting apoptosis in conditions like skin cancer.

Purpose of the Study:

• To highlight the critical role of apoptosis in maintaining homeostasis and its dysregulation in pathological conditions.
• To explore the involvement of apoptosis in skin diseases, cancer, and immune responses.
• To discuss current and future therapeutic strategies aimed at correcting apoptosis defects.

Main Methods:

• Review of existing literature on apoptosis.
• Analysis of apoptosis's role in specific diseases (psoriasis, atopic dermatitis, lupus, skin cancer).
• Examination of molecular mechanisms inhibiting apoptosis in cancer cells.

Main Results:

• Diminished epidermal apoptosis contributes to acanthosis in psoriasis.
• Defects in inflammatory reaction termination are seen in atopic dermatitis.
• Malignant melanoma cells employ anti-apoptotic strategies, contributing to treatment resistance.
• Tumors can evade immune attack by inducing apoptosis in immune cells.

Conclusions:

• Correcting dysregulated apoptosis is a key therapeutic goal for various diseases.
• Established and novel therapies (e.g., dithranol, gene therapy) aim to induce or modulate apoptosis.
• Targeting apoptosis pathways offers promising strategies for future cancer and inflammatory disease treatments.