Related Experiment Video

Updated: May 16, 2026

Network Pharmacology Prediction and Experimental Validation of Trichosanthes-Fritillaria thunbergii Action Mechanism Against Lung Adenocarcinoma
13:18

Network Pharmacology Prediction and Experimental Validation of Trichosanthes-Fritillaria thunbergii Action Mechanism Against Lung Adenocarcinoma

Published on: March 3, 2023

PAK signaling in cancer

Diana Zi Ye1, Jeffrey Field

  • 1Department of Pharmacology; Perelman School of Medicine; University of Pennsylvania; Philadelphia, PA USA.

Cellular Logistics
|November 20, 2012
PubMed

Insights

p21-activated kinases (PAKs) are crucial for cell transformation and cancer signaling. This review highlights PAKs

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Cellular transformation into cancer involves genetic mutations affecting proliferation, apoptosis, and invasion.
  • Small GTPases (Ras, Rho, Rac, Cdc42) are key regulators of malignant transformation.
  • p21-activated kinases (PAKs) are serine/threonine protein kinases and downstream effectors of Rac and Cdc42.

Purpose of the Study:

  • To review the role of PAKs in cell transformation.
  • To discuss key signaling pathways regulated by PAKs.
  • To focus on Group I PAKs (PAK1-3) as therapeutic targets.

Main Methods:

  • Literature review of scientific articles and research papers.
  • Analysis of signaling pathways involving PAKs in cancer.
  • Focus on the function and regulation of Group I PAK isoforms.

Main Results:

  • PAKs are essential signal transducers in multiple cancer pathways (Ras, Raf, NFκB, Akt, Bad, p53).
  • PAKs are not mutated in cancer but are frequently overexpressed or hyperactivated.
  • PAKs play significant roles in cytoskeletal dynamics, cell survival, and proliferation.

Conclusions:

  • PAKs are critical mediators of cell transformation and cancer progression.
  • The dysregulation of PAKs in tumors makes them promising therapeutic targets.
  • Understanding PAK signaling is vital for developing novel cancer treatments.

More Related Videos

Exploring the Pharmacological Action and Molecular Mechanism of Salidroside in Inhibiting MCF-7 Cell Proliferation and Migration11:13

Exploring the Pharmacological Action and Molecular Mechanism of Salidroside in Inhibiting MCF-7 Cell Proliferation and Migration

Published on: June 9, 2023

Related Concept Videos

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...
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...
The JAK-STAT Signaling Pathway01:20

The JAK-STAT Signaling Pathway

Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...
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...
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...