Repurposing of drugs as STAT3 inhibitors for cancer therapy

Pathum S Thilakasiri1, Rhynelle S Dmello1, Tracy L Nero2

  • 1Cancer and Inflammation Program, Olivia Newton-John Cancer Research Institute, School of Cancer Medicine, La Trobe University, Heidelberg, Vic., Australia.

Seminars in Cancer Biology
|November 13, 2019
PubMed

Insights

Drug repurposing offers a fast track for new cancer treatments. This review explores using existing drugs to target Signal Transducer and Activator of Transcription 3 (STAT3) for improved cancer therapy.

Area of Science:

  • Oncology
  • Pharmacology
  • Molecular Biology

Background:

  • Signal Transducer and Activator of Transcription 3 (STAT3) signaling is crucial in cancer progression.
  • STAT3 activation in tumor cells and the microenvironment drives disease.
  • STAT3 inhibitors are under investigation for cancer and inflammatory diseases.

Purpose of the Study:

  • To review the role of STAT3 in cancer.
  • To discuss direct STAT3 inhibitors.
  • To explore drug repurposing strategies for STAT3 inhibition in cancer therapy.

Main Methods:

  • Literature review of STAT3 inhibitors.
  • Analysis of drug repurposing for STAT3 targets.
  • Discussion of STAT3 activation mechanisms.

Main Results:

  • STAT3 plays a significant role in various cancers.
  • Numerous direct STAT3 inhibitors are in development.
  • Drug repurposing presents a viable strategy for novel STAT3 inhibitors.

Conclusions:

  • STAT3 is a key therapeutic target in oncology.
  • Further research into STAT3 mechanisms and drug repurposing is needed.
  • Repurposed drugs could accelerate the development of novel cancer treatments.

Related Concept Videos

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...
8.6K
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...
11.7K
Drugs that Stabilize Microtubules01:15

Drugs that Stabilize Microtubules

Microtubules are dynamic structures that undergo cycles of catastrophe and rescue. The microtubules play a central role in cell division by forming the spindle apparatus for segregating the chromosomes. This makes them ideal targets for regulating dividing cells in tumors and malignant cancer cells. Microtubule stabilizing drugs help stabilize the microtubule formation and promote its polymerization. Paclitaxel was the first microtubule stabilizing agent used as anticancer drug in chemotherapy...
2.6K
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:
3.8K
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...
4.6K
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...
5.0K