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Related Concept Videos

Microbial Interactions: Predation01:28

Microbial Interactions: Predation

Microbial predation refers to the process by which one microorganism kills and consumes another to obtain nutrients and energy. It encompasses both bacterial and protozoan predators. This interaction plays a crucial role in shaping microbial communities and regulating nutrient cycling.Bacterial Predators: Epibiotic vs. EndobioticBacterial predators are classified based on their mode of attack as either epibiotic or endobiotic. Epibiotic predators, such as Vampirococcus, attach to the surface of...
Phagocytosis00:41

Phagocytosis

Cells pull particles inward and engulf them in spherical vesicles in an energy-requiring process called endocytosis. Phagocytosis ("cellular eating") is one of three major types of endocytosis. Cells use phagocytosis to take in large objects, such as other cells (or their debris), bacteria, and even viruses.
The objective of phagocytosis is often destruction. Cells use phagocytosis to eliminate unwelcome visitors, like pathogens (e.g., viruses and bacteria). Many immune system cells, including...
Phagocytosis00:41

Phagocytosis

Cells pull particles inward and engulf them in spherical vesicles in an energy-requiring process called endocytosis. Phagocytosis (“cellular eating”) is one of three major types of endocytosis. Cells use phagocytosis to take in large objects—such as other cells (or their debris), bacteria, and even viruses.The objective of phagocytosis is often destruction. Cells use phagocytosis to eliminate unwelcome visitors, like pathogens (e.g., viruses and bacteria). It is perhaps unsurprising, that many...
Defenses Against Pathogens and Herbivores02:26

Defenses Against Pathogens and Herbivores

Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
Protein Digestion01:02

Protein Digestion

Protein digestion begins in the stomach, where the highly acidic environment can easily disrupt protein structure by exposing the peptide bonds of polypeptide chains. After polypeptide chains are broken into individual amino acids by a series of digestive enzymes, the amino acids are transported to the liver via the bloodstream to produce energy.

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Related Experiment Video

Updated: Jul 4, 2026

Protocols for Analyzing the Role of Paneth Cells in Regenerating the Murine Intestine using Conditional Cre-lox Mouse Models
07:48

Protocols for Analyzing the Role of Paneth Cells in Regenerating the Murine Intestine using Conditional Cre-lox Mouse Models

Published on: November 21, 2015

Puma: mauling the intestinal crypt.

Alan R Clarke1

  • 1School of Biosciences, Cardiff University, CF10 3US, UK. clarkear@cardiff.ac.uk

Cell Stem Cell
|June 5, 2008
PubMed
Summary
This summary is machine-generated.

Puma deletion prevents intestinal degeneration after DNA damage, a key challenge in cancer therapy. This finding offers a new target protein for developing improved cancer treatments to protect intestinal stem cells.

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Three-Dimensional Culture of Murine Colonic Crypts to Study Intestinal Stem Cell Function Ex Vivo
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Three-Dimensional Culture of Murine Colonic Crypts to Study Intestinal Stem Cell Function Ex Vivo

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Last Updated: Jul 4, 2026

Protocols for Analyzing the Role of Paneth Cells in Regenerating the Murine Intestine using Conditional Cre-lox Mouse Models
07:48

Protocols for Analyzing the Role of Paneth Cells in Regenerating the Murine Intestine using Conditional Cre-lox Mouse Models

Published on: November 21, 2015

Three-Dimensional Culture of Murine Colonic Crypts to Study Intestinal Stem Cell Function Ex Vivo
07:46

Three-Dimensional Culture of Murine Colonic Crypts to Study Intestinal Stem Cell Function Ex Vivo

Published on: October 11, 2022

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Chemotherapy and radiotherapy, common cancer treatments, can cause intestinal stem cell death, limiting their efficacy.
  • Intestinal stem cells are crucial for tissue regeneration and maintaining gut health.

Discussion:

  • Qiu et al. identified Puma as a critical mediator of intestinal degeneration following DNA damage.
  • Deletion of Puma protected intestinal stem cells from chemotherapy- and radiotherapy-induced damage in a preclinical model.

Key Insights:

  • Puma deletion prevents intestinal degeneration by safeguarding intestinal stem cells from DNA damage.
  • Targeting Puma could be a novel therapeutic strategy to mitigate side effects of cancer therapies.

Outlook:

  • Further research into Puma's role in DNA damage response could lead to the development of radioprotective agents.
  • This discovery paves the way for enhanced cancer treatments with reduced gastrointestinal toxicity.