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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...
Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
Bacterial Transformation01:33

Bacterial Transformation

In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
Bacterial Transformation01:33

Bacterial Transformation

In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
Cancer Therapies02:49

Cancer Therapies

Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
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.

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Related Experiment Video

Updated: Jun 6, 2026

Bioluminescent Bacterial Imaging In Vivo
05:06

Bioluminescent Bacterial Imaging In Vivo

Published on: November 4, 2012

Bacterial engineering for cancer therapy.

Noah Chen1, Zaofeng Yang1, Nicholas Arpaia2,3

  • 1Department of Microbiology and Immunology, Columbia University, New York, NY, USA.

Nature Cancer
|June 4, 2026
PubMed
Summary
This summary is machine-generated.

Bacteria can target tumors for cancer therapy, but face challenges. This perspective explores enhancing bacterial colonization and payload delivery for improved cancer treatment efficacy.

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Measuring Growth and Gene Expression Dynamics of Tumor-Targeted S. Typhimurium Bacteria
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Measuring Growth and Gene Expression Dynamics of Tumor-Targeted S. Typhimurium Bacteria

Published on: July 6, 2013

Related Experiment Videos

Last Updated: Jun 6, 2026

Bioluminescent Bacterial Imaging In Vivo
05:06

Bioluminescent Bacterial Imaging In Vivo

Published on: November 4, 2012

Measuring Growth and Gene Expression Dynamics of Tumor-Targeted S. Typhimurium Bacteria
08:11

Measuring Growth and Gene Expression Dynamics of Tumor-Targeted S. Typhimurium Bacteria

Published on: July 6, 2013

Area of Science:

  • Oncology
  • Microbiology
  • Biotechnology

Background:

  • Effective tumor targeting remains a significant challenge in cancer therapy.
  • Bacteria naturally accumulate in tumor tissues, offering potential for targeted drug delivery.
  • Current bacteria-based cancer therapies struggle with insufficient colonization and limited clinical efficacy.

Purpose of the Study:

  • To review mechanisms of bacterial tumor colonization and strategies for enhancement.
  • To discuss the antitumor mechanisms employed by bacteria.
  • To outline considerations for selecting and delivering therapeutic payloads using bacteria.

Main Methods:

  • Literature review of bacterial tumor colonization mechanisms.
  • Analysis of methods to improve bacterial accumulation in tumors.
  • Examination of bacterial antitumor effects and payload delivery strategies.

Main Results:

  • Bacterial tumor colonization is influenced by various factors, with several methods identified to enhance it.
  • Bacteria exert antitumor effects through direct cytotoxicity and by modulating the tumor immune microenvironment.
  • Payload selection and delivery require careful consideration for optimal therapeutic outcomes.

Conclusions:

  • Enhancing bacterial colonization and optimizing payload delivery are crucial for advancing bacteria-based cancer therapies.
  • Understanding bacterial mechanisms and tumor interactions is key to improving treatment efficacy.
  • Further research holds promise for developing more effective bacterial-guided cancer treatments.