Related Experiment Video

Updated: Jun 17, 2026

Preparing and Rearing Axenic Insects with Tissue Cultured Seedlings for Host-Gut Microbiota Interaction Studies of the Leaf Beetle
06:56

Preparing and Rearing Axenic Insects with Tissue Cultured Seedlings for Host-Gut Microbiota Interaction Studies of the Leaf Beetle

Published on: October 8, 2021

Gut microbes: from bugs to drugs

Fergus Shanahan1

  • 1Department of Medicine and Alimentary Pharmabiotic Centre, University College Cork, National University of Ireland, Cork, Ireland. F. Shanahan@ucc.ie

The American Journal of Gastroenterology
|January 14, 2010
PubMed

Insights

The mammalian genome requires environmental input, including microbial signals, for proper organ development. Exploring the gut microbiota offers a novel "bugs to drugs" approach for discovering new therapeutics.

Area of Science:

  • Microbiology
  • Developmental Biology
  • Pharmacology

Background:

  • Mammalian development relies on both genomic information and environmental cues.
  • The gut microbiota plays a crucial role in the development and maturation of the digestive and immune systems.
  • Specific molecular signals mediating host-microbe interactions are increasingly being identified.

Purpose of the Study:

  • To highlight the necessity of environmental information, particularly from the microbiota, for mammalian development.
  • To propose the gut ecosystem as a source for novel drug discovery.
  • To explore the therapeutic potential of microbial signals and interactions.

Main Methods:

  • Comparative studies of germ-free and conventionally colonized animals.
  • Molecular definition of microbial signaling molecules.
  • Analysis of microbe-microbe, host-microbe, and host-microbe-dietary interactions.

Main Results:

  • The gut microbiota significantly influences the development of key organ systems.
  • Molecular insights into host-microbe signaling are emerging.
  • Interactions within the gut ecosystem offer potential for therapeutic exploitation.

Conclusions:

  • The gut microbiota is an essential source of regulatory information for mammalian development.
  • A
  • bugs to drugs
  • paradigm is feasible for discovering novel therapeutics.
  • Future drug discovery in gastroenterology will likely leverage insights from the gut lumen and its microbial inhabitants.

More Related Videos

Rearing Axenic Delia antiqua with Half-Fermented Sterile Diets05:58

Rearing Axenic Delia antiqua with Half-Fermented Sterile Diets

Published on: December 22, 2023

High-Throughput Screening of Microbial Isolates with Impact on Caenorhabditis elegans Health11:40

High-Throughput Screening of Microbial Isolates with Impact on Caenorhabditis elegans Health

Published on: April 28, 2022

Related Concept Videos

Microbiota Modulation by Antibiotics01:21

Microbiota Modulation by Antibiotics

Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...
Functions of the Gut Microbiota01:18

Functions of the Gut Microbiota

The gut microbiota includes trillions of microorganisms that colonize the human gastrointestinal tract, including bacteria, archaea, viruses, and fungi. This complex ecosystem plays a critical role in maintaining intestinal and systemic health. Most of these microbes inhabit the large intestine, establishing a relatively stable and diverse community that contributes to gut homeostasis through various metabolic, immunological, and protective mechanisms.Dominant bacterial phyla, such as...
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.
Introduction to the Human Microbiota01:22

Introduction to the Human Microbiota

Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity, and disease...
Gut-Brain Axis01:22

Gut-Brain Axis

The gut–brain axis is a bidirectional communication system that connects the gastrointestinal tract and the brain. This interaction is mediated through multiple pathways, including the vagus nerve, hormonal signals, immune responses, and chemical messengers produced by gut microbes.Microbial Contributions to Brain FunctionGut microbiota contributes significantly to brain function by producing neuroactive compounds. These include neuroactive compounds that influence neurotransmitters such as...
Microorganisms in Agriculture and Food industry01:27

Microorganisms in Agriculture and Food industry

Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...