Related Experiment Video

Updated: Jun 4, 2026

Implementation of In Vitro Drug Resistance Assays: Maximizing the Potential for Uncovering Clinically Relevant Resistance Mechanisms
08:46

Implementation of In Vitro Drug Resistance Assays: Maximizing the Potential for Uncovering Clinically Relevant Resistance Mechanisms

Published on: December 9, 2015

PARP inhibitors in cancer therapy: promise, progress, and puzzles

Leif W Ellisen1

  • 1Massachusetts General Hospital Cancer Center and Harvard Medical School, Boston, MA, 02114, USA. ellisen@helix.mgh.harvard.edu

Cancer Cell
|February 15, 2011
PubMed

Insights

A new breast cancer treatment combines chemotherapy to damage DNA with PARP inhibitors to block repair. This dual-action strategy shows promise for patients with difficult-to-treat, refractory breast cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Treatment-refractory breast cancer presents a significant clinical challenge.
  • DNA damage and repair pathways are critical in cancer progression and treatment response.

Discussion:

  • The study explores a novel therapeutic approach combining DNA-damaging chemotherapy with Poly (ADP-ribose) polymerase (PARP) inhibitors.
  • This strategy aims to overwhelm cancer cells by inducing DNA damage that cannot be repaired.

Key Insights:

  • Evidence suggests that simultaneous DNA damage induction and repair inhibition can be effective against refractory breast cancer.
  • PARP inhibitors block a key DNA repair mechanism, potentiating the effects of chemotherapy.

Outlook:

  • This combined treatment strategy may offer a new therapeutic option for patients with limited treatment choices.
  • Further research is warranted to optimize this approach and assess long-term outcomes in clinical trials.

More Related Videos

Preparation of Peripheral Blood Mononuclear Cell Pellets and Plasma from a Single Blood Draw at Clinical Trial Sites for Biomarker Analysis07:40

Preparation of Peripheral Blood Mononuclear Cell Pellets and Plasma from a Single Blood Draw at Clinical Trial Sites for Biomarker Analysis

Published on: March 20, 2021

Cell Death Associated with Abnormal Mitosis Observed by Confocal Imaging in Live Cancer Cells15:53

Cell Death Associated with Abnormal Mitosis Observed by Confocal Imaging in Live Cancer Cells

Published on: August 21, 2013

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 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...
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...
Treatment Resistent Cancers02:56

Treatment Resistent 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...
Tumor Progression02:07

Tumor Progression

Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...