Chemotherapy Resistance Mechanisms in Advanced Skin Cancer

Bhuvanesh Sukhlal Kalal1, Dinesh Upadhya2, Vinitha Ramanath Pai3

  • 1Department of Biochemistry, Yenepoya Medical College, Mangaluru, India; Yenepoya Research Centre, Yenepoya University, Mangaluru, India.

Oncology Reviews
|April 7, 2017
PubMed

Insights

Malignant melanoma, a deadly skin cancer, is resistant to standard treatments. Understanding its molecular resistance mechanisms is key to developing new therapies for this growing public health concern.

Area of Science:

  • Oncology
  • Dermatology
  • Cancer Biology

Background:

  • Melanoma is an aggressive skin cancer with rising incidence and poor survival rates, especially in advanced stages.
  • The disease is intrinsically resistant to radiotherapy and chemotherapy, posing a significant public health challenge.
  • Late-stage metastatic melanoma has a very poor prognosis, with current therapies offering limited efficacy.

Purpose of the Study:

  • To investigate the molecular underpinnings of chemotherapy resistance in melanoma.
  • To identify potential therapeutic targets for overcoming treatment unresponsiveness in malignant melanoma.
  • To explore novel treatment strategies for advanced melanoma.

Main Methods:

  • Review of existing literature on melanoma resistance mechanisms.
  • Analysis of molecular pathways involved in drug resistance, including drug transport, apoptosis, and cellular metabolism.
  • Exploration of potential combination therapies involving surgery, chemotherapy, and radiotherapy.

Main Results:

  • Melanoma's resistance to chemotherapy is multifactorial, involving defects in drug transport, altered apoptotic pathways, and changes in metabolic enzymes.
  • Understanding these molecular alterations is crucial for developing effective treatments.
  • Current therapeutic approaches for metastatic melanoma are largely ineffective.

Conclusions:

  • The molecular basis of melanoma's resistance to chemotherapy is complex and multifaceted.
  • Targeting these specific molecular mechanisms may lead to the development of novel and more effective therapeutic strategies.
  • Further research into melanoma's drug resistance is essential for improving patient outcomes.

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,...
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...
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...
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,...
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...
Skin Cancer01:30

Skin Cancer

Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...