Inside life of melanoma cell signaling, molecular insights, and therapeutic targets

Jeffrey A Sosman1, Kim A Margolin

  • 1Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, 777 Preston Research Building, 2220 Pierce Avenue, Nashville, TN 37232, USA. Jeff.sosman@vanderbilt.edu

Current Oncology Reports
|August 15, 2009
PubMed

Insights

Targeting the BRAF V600E mutation in melanoma offers a promising therapeutic strategy. Combination therapies may overcome resistance in advanced melanoma.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Melanoma is a rapidly growing cancer with limited treatment options for metastatic disease.
  • Current immunotherapies and chemotherapies benefit only a subset of patients.
  • Targeting essential molecular pathways offers a potential strategy for advanced melanoma.

Purpose of the Study:

  • To explore the therapeutic potential of targeting specific molecular pathways in advanced melanoma.
  • To investigate the role of BRAF V600E mutations and cooperating molecular alterations in melanoma.
  • To assess strategies for overcoming therapy resistance in melanoma.

Main Methods:

  • Analysis of molecular alterations in melanoma, including BRAF V600E mutations and PTEN loss of function.
  • Review of current and emerging targeted therapies and their mechanisms.
  • Evaluation of combination and sequential therapy strategies.

Main Results:

  • The BRAF V600E mutation is present in 60% of melanomas.
  • Cooperating molecular alterations, such as PTEN loss, influence pathway signaling.
  • Targeting these pathways may provide significant therapeutic benefit.

Conclusions:

  • Targeting the BRAF V600E mutation is a viable strategy for advanced melanoma.
  • Understanding cooperating mutations and resistance mechanisms is crucial for effective treatment.
  • Optimized combination and sequential therapies hold potential to overcome melanoma resistance.

Related Concept Videos

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...
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...
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a rapamycin-insensitive companion...
Metastasis02:30

Metastasis

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) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...