Immune checkpoint blockade: a common denominator approach to cancer therapy

Suzanne L Topalian1, Charles G Drake2, Drew M Pardoll3

  • 1Department of Surgery, Sidney Kimmel Comprehensive Cancer Center and Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA.

Cancer Cell
|April 11, 2015
PubMed

Insights

Cancer evades immune detection through immune checkpoints. Drugs targeting these checkpoints, like anti-CTLA-4 and anti-PD-1, unleash anti-tumor immunity, offering durable cancer regressions. Further research is ongoing.

Area of Science:

  • Immunology
  • Oncology
  • Pharmacology

Background:

  • The immune system can identify and eliminate cancer cells.
  • Immune checkpoint pathways, crucial for self-tolerance, can be exploited by cancer to evade immune surveillance.
  • These pathways normally prevent autoimmune diseases and excessive inflammation during infections.

Purpose of the Study:

  • To explore the mechanisms by which cancer evades immune destruction.
  • To investigate the therapeutic potential of targeting immune checkpoint pathways.
  • To understand the complex biology and therapeutic spectrum of immune checkpoint inhibitors.

Main Methods:

  • Review of immune checkpoint pathways (e.g., CTLA-4, PD-1, PD-L1).
  • Analysis of clinical data on immune checkpoint-blocking drugs.
  • Ongoing research into the combined and individual effects of these therapies.

Main Results:

  • Immune checkpoint inhibitors (e.g., anti-CTLA-4, anti-PD-1, anti-PD-L1) can restore anti-tumor immunity.
  • These drugs have demonstrated the ability to mediate durable cancer regressions in various malignancies.
  • The full spectrum of activity and optimal use of these drugs are still under investigation.

Conclusions:

  • Targeting immune checkpoints represents a promising strategy for cancer immunotherapy.
  • Immune checkpoint inhibitors offer a new avenue for achieving long-term cancer remission.
  • Continued research is essential to fully elucidate the complex biology and clinical applications of these therapies.

Related Concept Videos

Tumor Immunotherapy01:27

Tumor Immunotherapy

Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
2.5K
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...
9.2K
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

1.8K
Cancer Vaccines01:30

Cancer Vaccines

Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
1.4K
Inhibition of Cdk Activity02:34

Inhibition of Cdk Activity

The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
6.2K
Inhibition of CDK Activity02:34

Inhibition of CDK Activity

5.7K