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Carcinogenesis of cutaneous malignancies
1Division of Dermatology, Southern Illinois University School of Medicine, Springfield 62794-9230, USA.
Background:
Over the past several years significant progress has been made in identifying the cellular and biochemical mechanisms underlying carcinogenesis.
Objective:
This review summarizes recent advances that have helped clarify the process of malignant transformation in cutaneous tumors.
Results:
Ultraviolet radiation-induced mutations in the p53 tumor suppressor gene and human papilloma virus inhibition of the p53 and retinoblastoma tumor suppressor gene products appear to play significant roles in the development of many cutaneous squamous cell carcinomas. Studies of patients with the nevoid basal cell carcinoma syndrome suggest the existence of an additional regulatory gene that may be involved in the development of basal cell carcinomas.
Conclusions:
Carcinogenesis is multistep process involving genetic and epigenetic alterations to specific proto-oncogene and tumor suppressor gene products that progressively release the cell from normal controlled growth and replication.
Insights
Understanding skin cancer development involves studying genetic changes. Ultraviolet radiation and human papilloma virus impact tumor suppressor genes, crucial for preventing malignant transformation.
Area of Science:
- Oncology
- Dermatology
- Molecular Biology
Background:
- Significant advancements have been made in understanding the cellular and biochemical pathways of carcinogenesis.
- Focus on identifying mechanisms driving malignant transformation in skin cancers.
Purpose of the Study:
- To review recent progress in understanding malignant transformation of cutaneous tumors.
- To elucidate the molecular mechanisms involved in skin cancer development.
Main Methods:
- Literature review of recent advances in cutaneous oncology.
- Analysis of genetic and molecular alterations in skin carcinogenesis.
Main Results:
- Ultraviolet radiation-induced mutations in the p53 tumor suppressor gene are implicated in squamous cell carcinomas.
- Human papilloma virus (HPV) can inhibit p53 and retinoblastoma tumor suppressor gene products, contributing to skin cancer.
- Nevoid basal cell carcinoma syndrome research suggests a regulatory gene's role in basal cell carcinoma development.
Conclusions:
- Carcinogenesis is a multistep process involving genetic and epigenetic alterations.
- Alterations in proto-oncogenes and tumor suppressor genes disrupt normal cell growth control.
- These molecular changes progressively release cells from regulatory mechanisms, leading to cancer.