Focal adhesion kinase: targeting adhesion signaling pathways for therapeutic intervention

J Thomas Parsons1, Jill Slack-Davis, Robert Tilghman

  • 1Department of Microbiology and Cancer Center, University of Virginia Health System, Charlottesville, Virginia 22908, USA jtp@virginia.edu

Insights

The tumor microenvironment influences cancer growth and spread. Targeting signaling pathways within this environment is a key strategy for developing new cancer treatments.

Area of Science:

  • Oncology
  • Cancer Biology
  • Cell Signaling

Background:

  • The tumor microenvironment is crucial for cancer progression and metastasis.
  • Cancer cells interact with various signals from their surroundings, including growth factors, chemotactic factors, adjacent cells, stromal cells, and the extracellular matrix.

Purpose of the Study:

  • To highlight the significance of the tumor microenvironment in cancer.
  • To emphasize the role of signaling pathways in mediating cellular responses within the tumor microenvironment.
  • To underscore the therapeutic potential of targeting these pathways.

Main Methods:

  • Review of existing literature on tumor microenvironment signaling.
  • Analysis of key signaling pathways involved in cancer progression.
  • Identification of therapeutic targets within these pathways.

Main Results:

  • The tumor microenvironment provides essential signals that drive cancer cell behavior.
  • Numerous signaling pathways are activated by these environmental cues.
  • These pathways represent promising targets for novel cancer therapies.

Conclusions:

  • Understanding the tumor microenvironment is critical for advancing cancer treatment.
  • Targeting specific signaling pathways offers a viable strategy for therapeutic intervention.
  • Further research into these pathways could lead to more effective cancer drugs.

Related Concept Videos

Intracellular Signaling Affects Focal Adhesions01:17

Intracellular Signaling Affects Focal Adhesions

Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Amplifying Signals via Enzymatic Cascade01:22

Amplifying Signals via Enzymatic Cascade

When a ligand binds to a cell-surface receptor, the receptor's intracellular domain changes shape, which may either activate its enzyme function or allow its binding to other molecules. The initial signal is amplified by most signal transduction pathways. This means that a single ligand molecule can activate multiple molecules of a downstream target. Proteins that relay a signal are most commonly phosphorylated at one or more sites, activating or inactivating the protein. Kinases catalyze the...
Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
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...
Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
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...