Molecular mechanisms of cancer cells survival

R Tsanev1

  • 1Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia, Bulgaria.

Insights

Cancer cells evade immune defense and treatments through survival mechanisms like telomerase reactivation and apoptosis suppression. Understanding these pathways is key to developing effective cancer therapies.

Area of Science:

  • Oncology
  • Cancer Biology
  • Immunology

Background:

  • Cancer cells develop sophisticated mechanisms to evade the host's natural defenses and therapeutic interventions.
  • Understanding these cancer survival strategies is crucial for advancing cancer treatment.
  • The body's anticancer defenses involve cellular immunity, cytokine production, tumor-suppressor genes, and telomerase inhibition.

Purpose of the Study:

  • To elucidate the molecular mechanisms cancer cells employ for survival.
  • To outline novel therapeutic approaches to overcome cancer cell resistance.

Main Methods:

  • Review and synthesis of established and emerging cancer survival mechanisms.
  • Exploration of molecular pathways utilized by cancer cells, including telomerase reactivation, apoptosis suppression, and drug resistance.
  • Brief outline of potential therapeutic strategies targeting these mechanisms.

Main Results:

  • Cancer cells employ at least ten distinct molecular mechanisms for survival.
  • Key mechanisms include telomerase reactivation, apoptosis suppression, immune evasion, and neoangiogenesis.
  • Hypoxia and drug efflux pumps are also critical for cancer cell survival.

Conclusions:

  • Overcoming cancer requires targeting the multifaceted survival mechanisms employed by malignant cells.
  • New therapeutic strategies are being developed to counteract cancer's resistance pathways.
  • Further research into these mechanisms will pave the way for more effective cancer therapies.

Related Concept Videos

Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Treatment Resistant Cancers02:56

Treatment Resistant Cancers

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 their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
Cancer Stem Cells and Tumor Maintenance02:40

Cancer Stem Cells and Tumor Maintenance

Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Cancer Stem Cells and Tumor Maintenance02:40

Cancer Stem Cells and Tumor Maintenance

Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

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 yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...