Hypoxia inducible factor as a cancer drug target

Sarah J Welsh1, Garth Powis

  • 1Arizona Cancer Center, 1515 N Campbell Avenue, Tucson, Arizona 85724, USA. gpowis@azcc.arizona.edu

Current Cancer Drug Targets
|December 20, 2003
PubMed

Insights

Hypoxia-inducible factor-1 (HIF-1) drives aggressive tumors, hindering cancer treatment. Targeting the HIF-1 pathway offers a promising strategy for developing new cancer therapies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Solid tumors often contain hypoxic regions, contributing to treatment resistance and poor prognosis.
  • The hypoxia-inducible factor-1 (HIF-1) pathway is a key regulator of cellular adaptation to low oxygen conditions.
  • Overexpression of HIF-1alpha is frequently observed in human cancers and linked to adverse outcomes.

Purpose of the Study:

  • To review the regulatory mechanisms controlling HIF-1 activity.
  • To summarize the critical role of HIF-1 in tumor progression and treatment failure.
  • To discuss potential therapeutic strategies targeting the HIF-1 pathway for cancer treatment.

Main Methods:

  • Literature review of studies on HIF-1 regulation, function, and therapeutic targeting.
  • Analysis of research on the role of hypoxia and HIF-1 in various cancers.
  • Synthesis of information on existing and emerging drugs targeting the HIF-1 pathway.

Main Results:

  • HIF-1 controls genes involved in glycolysis, apoptosis, angiogenesis, and metastasis, promoting tumor growth and spread.
  • HIF-1alpha levels are critical for pathway activation and are frequently elevated in tumors.
  • Targeting HIF-1 presents a viable approach to overcome treatment resistance in hypoxic tumors.

Conclusions:

  • The HIF-1 pathway is a crucial mediator of tumor aggressiveness and therapeutic resistance.
  • Understanding HIF-1 regulation is essential for developing effective anti-cancer drugs.
  • Targeting HIF-1 offers a promising avenue for improving outcomes in patients with solid tumors.

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,...
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
Cancer Therapies02:49

Cancer Therapies

Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
Cancer Therapies02:49

Cancer Therapies

Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
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...