Author Topic: Hydrogel is made of synthetic DNA  (Read 633 times)

Offline Asif.Hossain

  • Full Member
  • ***
  • Posts: 233
    • View Profile
Hydrogel is made of synthetic DNA
« on: October 23, 2013, 06:48:08 PM »
A new material made from synthetic DNA is so soft that it can flow like a liquid and then return to its original shape.

This new hydrogel is made of synthetic DNA. Previously, by synthesizing DNA with carefully arranged complementary sections, the research team created short stands that link into shapes such as crosses or Y’s, which in turn join at the ends to form mesh-like structures to form the first successful all-DNA hydrogel.
When trying a new approach, researchers mixed synthetic DNA with enzymes that cause DNA to self-replicate and to extend itself into long chains, to make a hydrogel without DNA linkages. During this process they entangle, and the entanglement produces a 3D network. But the result was not what they expected: The hydrogel they made flows like a liquid, but when placed in water returns to the shape of the container in which it was formed.

Exactly how this works is still being investigated. The scientists theorize that the elastic forces holding the shape are so weak that a combination of surface tension and gravity overcomes them; the gel just sags into a loose blob. But when it is immersed in water, surface tension is nearly zero—there’s water inside and out—and buoyancy cancels gravity. Read more here: http://bit.ly/YAVTg0

Journal article: A mechanical metamaterial made from a DNA hydrogel. Nature Nanotechnology, 2012. http://dx.doi.org/ 10.1038/nnano.2012.211
« Last Edit: October 23, 2013, 07:00:23 PM by Asif.Hossain »
Muhammad Asif Hossain
Coordination Officer
Department of Pharmacy
Daffodil International University

Offline mustafiz

  • Hero Member
  • *****
  • Posts: 524
  • Test
    • View Profile
Re: Hydrogel is made of synthetic DNA
« Reply #1 on: December 16, 2013, 01:44:42 PM »
Informative post.

Offline Saqueeb

  • Hero Member
  • *****
  • Posts: 536
  • Test
    • View Profile
Re: Hydrogel is made of synthetic DNA
« Reply #2 on: December 28, 2013, 04:27:53 PM »
interesting and informative post.
Nazmus Saqueeb
Sr. Lecturer, Dept. of Pharmacy,
Daffodil International University.

Offline Mostakima Mafruha Lubna

  • Full Member
  • ***
  • Posts: 101
  • Test
    • View Profile
Re: Hydrogel is made of synthetic DNA
« Reply #3 on: February 10, 2014, 05:08:16 PM »
Thank you for sharing this technological advancement...this will further lead to artificial tissue culture.
Mostakima Mafruha Lubna
Lecturer (ACCT)
Dept. of Textile Engineering, FE
lubna.ns@daffodilvarsity.edu.bd