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Published on: March 11, 2014
[Apoptosis modulation by human papillomavirus]
Luis Felipe Jave-Suárez1, Sarah Ratkovich-González, Vicente Olimón-Andalón
1División de Inmunología, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México. lfjave@yahoo.com.
Abstract:
One of the most important processes to keep the homeostasis in organisms is the apoptosis, also called programmed cell death. This mechanism works through two pathways: The intrinsic or mitochondrial, which responds to DNA damage and extern agents like UV radiation; and the extrinsic or receptor-mediated, which binds to their ligands to initiate the apoptotic trail. The evasion of apoptosis is one of the main causes of cellular transformation to malignity. Many viruses had shown capacity to modify the apoptotic process; among them is the human papillomavirus, which, by means of its oncoproteins, interferes in pathways, reacting with the receptors and molecules and participating in the death mechanism. This creates ideal conditions for cancer development.
Insights
Apoptosis, or programmed cell death, is vital for organism homeostasis. Human papillomavirus evades apoptosis, promoting cancer development by interfering with cell death pathways.
Area of Science:
- Cell Biology
- Virology
- Oncology
Background:
- Apoptosis, or programmed cell death, is crucial for maintaining homeostasis in organisms.
- Apoptosis occurs via intrinsic (mitochondrial) and extrinsic (receptor-mediated) pathways.
- Evasion of apoptosis is a key factor in cellular transformation and malignancy.
Purpose of the Study:
- To investigate the role of human papillomavirus (HPV) in modulating apoptotic processes.
- To understand how HPV oncoproteins interfere with cell death mechanisms.
- To elucidate the link between HPV-induced apoptosis evasion and cancer development.
Main Methods:
- Analysis of HPV oncoprotein interactions with apoptosis-related receptors and molecules.
- Examination of the impact of HPV on intrinsic and extrinsic apoptotic pathways.
- Correlation of HPV-mediated apoptosis evasion with cellular transformation and malignancy.
Main Results:
- Human papillomavirus oncoproteins actively interfere with both intrinsic and extrinsic apoptosis pathways.
- HPV disrupts normal cellular signaling, inhibiting programmed cell death.
- This interference creates conditions conducive to the development of cancer.
Conclusions:
- HPV's ability to evade apoptosis is a significant mechanism contributing to its oncogenic potential.
- Targeting HPV-induced apoptosis evasion may offer therapeutic strategies for HPV-related cancers.
- Understanding these viral interference mechanisms is critical for cancer prevention and treatment.
Related Concept Videos
Apoptosis
The Extrinsic Apoptotic Pathway
The Intrinsic Apoptotic Pathway
Abnormal Proliferation
Mechanisms of Retrovirus-induced Cancers
Mechanisms of Retrovirus-induced Cancers

