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Chapter 20

Cancer

Qu’est-ce qu’un cancer ?
Qu’est-ce qu’un cancer ?
Cells and tissues must meticulously coordinate their activities for the normal functioning of the human body. Therefore, they exhibit socially ...
Cancers dus à des mutations somatiques au sein d'une seule cellule
Cancers dus à des mutations somatiques au sein d'une seule cellule
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate ...
Progression de la tumeur
Progression de la tumeur
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the ...
Mécanismes adaptatifs dans les cellules cancéreuses
Mécanismes adaptatifs dans les cellules cancéreuses
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, ...
Le microenvironnement de la tumeur
Le microenvironnement de la tumeur
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood ...
Métastase
Métastase
Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) ...
Gènes essentiels dans le développement du cancer I : Proto-oncogènes
Gènes essentiels dans le développement du cancer I : Proto-oncogènes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, ...
Mécanismes des cancers induit par rétrovirus
Mécanismes des cancers induit par rétrovirus
Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of ...
Le gène Ras
Le gène Ras
The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family ...
Perte des fonctions de gène suppresseur de tumeur
Perte des fonctions de gène suppresseur de tumeur
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable ...
Signalisation mTOR et progression du cancer
Signalisation mTOR et progression du cancer
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a ...
Cellules souches cancéreuses et maintien de la tumeur
Cellules souches cancéreuses et maintien de la tumeur
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often ...
Modèle de souris  pour l’étude du cancer
Modèle de souris pour l’étude du cancer
Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are ...
Prévention du cancer
Prévention du cancer
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular ...
Traitements du cancer
Traitements du cancer
Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients. However, ...
Traitements ciblés du cancer
Traitements ciblés du cancer
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between ...
Cancers résistants au traitement
Cancers résistants au traitement
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify ...
Thérapie combinée et médecine personnalisée
Thérapie combinée et médecine personnalisée
Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a ...
Gènes essentiels dans le développement du cancer : Gènes suppresseurs de tumeur
Gènes essentiels dans le développement du cancer : Gènes suppresseurs de tumeur
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, ...
Le gène du rétinoblastome (Rb)
Le gène du rétinoblastome (Rb)
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable ...
Virus du sarcome de Rous et cancer
Virus du sarcome de Rous et cancer
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He ...
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