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Apoptosis in the genesis and prevention of cancer
H J Thompson1, R Strange, P J Schedin
1Division of Laboratory Research, AMC Cancer Research Center, Denver, Colorado 80214.
Abstract:
A strong rationale exists for developing cancer control strategies designed to suppress or reverse the development of precancerous lesions in order to reduce the occurrence and recurrence of this disease. Whereas numerous agents have been identified that inhibit tumor development, little is known about how they work. Recently the hypothesis has been raised that misregulation of apoptosis results in a failure of tissue size regulation that contributes to the development of cancer. If validated, this concept has important implications for the prevention of carcinogenesis and could lead to the development of new cancer control approaches that have as their basis the restoration of competence to regulate tissue size. Thus, it is essential to consider the role of cell loss in the tumorigenic process. In this regard investigation of the role of specific types of cell death in tumorigenesis, particularly the role of apoptotic cell death in maintenance of tissue homeostasis, has been neglected. The fact that apoptosis is a highly conserved, specific, and selective means of controlling tissue mass and shape also suggests that it can be exploited for the prevention or control of cancer.
Insights
Preventing cancer by targeting precancerous lesions is crucial. Misregulation of apoptosis, a programmed cell death, may cause tissue growth errors, contributing to cancer development and recurrence.
Area of Science:
- Oncology
- Cell Biology
- Cancer Prevention
Background:
- Cancer control strategies aim to prevent precancerous lesions, reducing disease occurrence and recurrence.
- While many tumor-inhibiting agents exist, their mechanisms remain largely unknown.
- A recent hypothesis links misregulated apoptosis (programmed cell death) to tissue size dysregulation and cancer development.
Purpose of the Study:
- To explore the role of cell loss, specifically apoptosis, in tumorigenesis.
- To investigate the neglected role of apoptotic cell death in maintaining tissue homeostasis.
- To assess the potential of exploiting apoptosis for novel cancer prevention and control strategies.
Main Methods:
- Review of existing hypotheses on apoptosis and cancer.
- Analysis of the role of programmed cell death in tissue size regulation.
- Exploration of conserved mechanisms of apoptosis in controlling tissue mass and shape.
Main Results:
- Misregulation of apoptosis is hypothesized to impair tissue size control, contributing to cancer.
- Apoptotic cell death plays a critical role in maintaining tissue homeostasis.
- Apoptosis is a conserved, specific, and selective mechanism for controlling tissue mass and shape.
Conclusions:
- Restoring competence in tissue size regulation via apoptosis holds promise for cancer prevention.
- Targeting apoptosis could lead to new therapeutic approaches for cancer control.
- Further investigation into the role of apoptosis in tumorigenesis is essential for developing effective cancer interventions.