Related Experiment Videos
Apoptosis, cancer and cancer therapy
R J Bold1, P M Termuhlen, D J McConkey
1Department of Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston 77030, USA.
Abstract:
Apoptosis is a specific process that leads to programmed cell death through the activation of an evolutionary conserved intracellular pathway leading to pathognomic cellular changes distinct from cellular necrosis. Apoptosis is essential in the homeostasis of normal tissues of the body, especially those of the gastrointestinal tract, immune system and skin. There is increasing evidence that the processes of neoplastic transformation, progression and metastasis involve alterations in the normal apoptotic pathways. Furthermore, the majority of chemotherapeutic agents as well as radiation utilize the apoptotic pathway to induce cancer cell death. Resistance to standard chemotherapies also seems to be determined by alterations in the apoptotic pathways of cancer cells. Therefore, understanding the signals of apoptosis and the mechanism of apoptosis may allow the development of better chemo- or radiotherapeutic regimens for the treatment of cancer. Finally, components of the apoptotic pathway may represent potential therapeutic targets using gene therapy techniques.
Insights
Apoptosis, or programmed cell death, is vital for tissue balance and cancer treatment. Understanding apoptosis pathways can improve cancer therapies and target cancer cells more effectively.
Area of Science:
- Cell Biology
- Molecular Biology
- Cancer Research
Background:
- Apoptosis is programmed cell death crucial for tissue homeostasis, particularly in the gastrointestinal tract, immune system, and skin.
- Altered apoptotic pathways are implicated in cancer development, progression, and metastasis.
- Chemotherapy and radiation therapy primarily induce cancer cell death via apoptosis.
Purpose of the Study:
- To explore the role of apoptosis in normal tissue homeostasis and cancer.
- To investigate the involvement of apoptosis in cancer treatment resistance.
- To identify potential therapeutic targets within the apoptotic pathway for cancer gene therapy.
Main Methods:
- Review of existing literature on apoptosis signaling and mechanisms.
- Analysis of the role of apoptosis in neoplastic transformation and metastasis.
- Examination of apoptosis pathway alterations in chemo- and radio-resistant cancer cells.
Main Results:
- Apoptosis is essential for maintaining normal tissue homeostasis.
- Dysregulation of apoptosis is a hallmark of cancer.
- Apoptotic pathway alterations contribute to chemotherapy resistance.
Conclusions:
- Understanding apoptosis mechanisms is key to developing improved cancer treatments.
- Components of the apoptotic pathway represent promising targets for gene therapy in cancer treatment.
- Targeting apoptosis offers a potential strategy to overcome chemoresistance in cancer therapy.