Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Understanding a bacterial immune system 1 step at a time

Researchers at the University of Alberta have taken an important step in understanding an immune system of bacteria, a finding that could have implications for medical care and both the pharmaceutical and dairy industries.

In research published in the high impact journal Nature Structural & Molecular Biology, Andrew MacMillan and co-workers in his lab have described the first step of the immune response of bacterial cells. Scientists had previously found that a bacterial virus, called a bacteriophage, attacks a bacterial cell by injecting its DNA in to the cell. MacMillan's lab discovered the mechanism by which bacterial RNA is cut into pieces by a specific protein; these pieces then target the invading virus' DNA.

"We are starting at the beginning because we want to understand how this works and how we can use this to basically control bacterial growth," said Matt Schellenberg, a post-doctoral fellow in the MacMillan lab in the department of biochemistry in the Faculty of Medicine & Dentistry. This system could be beneficial for bacteria to fight off invasion of viruses. Alternatively, medical professionals could use knowledge of this system to help fight a human bacterial infection.

According to MacMillan they used a technique called X-ray crystallography to produce high-resolution pictures of a key step in the bacteria's immune response — the production of the targeting RNAs.

... more about:
»DNA »MacMillan »RNA »immune response »immune system

"Bacteria have evolved this system to protect themselves against infection," said MacMillan.

As they unfold the mystery of the bacteria cells immune system, which is named the CRISPR system, there are implications for a variety of industrial practices involving fermentation. Everything from cheese and yogurt production to the synthesis of complex pharmaceuticals relies on large scale bacterial fermentation which is at risk of bacteriophage infection with expensive consequences – losing the batch. The labs ongoing work could help these industries boost the immune systems of the "good" bacteria.

The next step for the lab is to uncover the mechanism by which virus' DNA is destroyed.

"We want to use what we've learned so far to examine the actual targeting mechanism," says Macmillan. "This is a complex pathway and there's a lot of exciting biology to still uncover."

Quinn Phillips | EurekAlert!
Further information:

Further reports about: DNA MacMillan RNA immune response immune system

More articles from Life Sciences:

nachricht ‘Farming’ bacteria to boost growth in the oceans
24.10.2016 | Max-Planck-Institut für marine Mikrobiologie

nachricht Calcium Induces Chronic Lung Infections
24.10.2016 | Universität Basel

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

Im Focus: New Products - Highlights of COMPAMED 2016

COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.

In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Oasis of life in the ice-covered central Arctic

24.10.2016 | Earth Sciences

‘Farming’ bacteria to boost growth in the oceans

24.10.2016 | Life Sciences

Light-driven atomic rotations excite magnetic waves

24.10.2016 | Physics and Astronomy

More VideoLinks >>>