Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Now you can 'build your own' bio-bot

14.02.2017

I'll bet you don't have one of these at home.

For the past several years, researchers at the University of Illinois at Urbana-Champaign have been developing a class of walking "bio-bots" powered by muscle cells and controlled with electrical and optical pulses. Now, Rashid Bashir's research group is sharing the recipe for the current generation of bio-bots. Their how-to paper is the cover article in Nature Protocols.


This is a schematic of a bio-bot: Engineered skeletal muscle tissue is coupled to a 3-D printed flexible skeleton. Optical stimulation of the muscle tissue, which is genetically engineered to contract in response to blue light, makes the bio-bot walk across a surface in the direction of the light.

Credit: Janet Sinn-Hanlon, University of Illinois

"The protocol teaches every step of building a bio-bot, from 3D printing the skeleton to tissue engineering the skeletal muscle actuator, including manufacturers and part numbers for every single thing we use in the lab," explained Ritu Raman, now a postdoctoral fellow in the Department of Bioengineering and first author of the paper, "A modular approach to the design, fabrication, and characterization of muscle-powered biological machines."

"This protocol is essentially intended to be a one-stop reference for any scientist around the world who wants to replicate the results we showed in our PNAS 2016 and PNAS 2014 papers, and give them a framework for building their own bio-bots for a variety of applications," Raman said.

As stated in the paper, "Biological machines consisting of cells and biomaterials have the potential to dynamically sense, process, respond, and adapt to environmental signals in real time." This can result in exciting possibilities where these "systems could one day demonstrate complex behaviors including self-assembly, self-organization, self-healing, and adaptation of composition and functionality to best suit their environment."

Bashir's group has been a pioneer in designing and building bio-bots, less than a centimeter in size, made of flexible 3D printed hydrogels and living cells. In 2012, the group demonstrated bio-bots that could "walk" on their own, powered by beating heart cells from rats. However, heart cells constantly contract, denying researchers control over the bot's motion.

"The purpose of the paper was to provide the detailed recipes and protocols so that others can easily duplicate the work and help to further permeate the idea of 'building with biology'--so that other researchers and educators can have the tools and the knowledge to build these bio-hybrid systems and attempt to address challenges in health, medicine, and environment that we face as a society," stated Rashid Bashir, a Grainger Distinguished Chair in Engineering and head of the Department of Bioengineering at Illinois.

"The 3D printing revolution has given us the tools required to 'build with biology' in this way." Raman said. "We re-designed the 3D-printed injection mold to produce skeletal muscle 'rings' that could be manually transferred to any of a wide variety of bio-bot skeletons. These rings were shown to produce passive and active tension forces similar to those generated by muscle strips.

"Using optogenetics techniques, we worked with collaborators at MIT to genetically engineer a light-responsive skeletal muscle cell line that could be stimulated to contract by pulses of 470-nm blue light," Raman added. "The resultant optogenetic muscle rings were coupled to multi-legged bio-bot skeletons with symmetric geometric designs. Localized stimulation of contraction, rendered possible by the greater spatiotemporal control of light stimuli over electrical stimuli, was used to drive directional locomotion and 2D rotational steering."

###

In addition to Bashir and Raman, Caroline Cvetkovic, a recent graduate student in bioengineering and now a post-doctoral fellow was a co-author of the paper. Work on the bio-bots was conducted at the Micro + Nanotechnology Lab at Illinois.

Rashid Bashir | EurekAlert!

Further reports about: 3D beating heart blue light heart cells living cells muscle cells skeletal muscle

More articles from Life Sciences:

nachricht Could this protein protect people against coronary artery disease?
17.11.2017 | University of North Carolina Health Care

nachricht Microbial resident enables beetles to feed on a leafy diet
17.11.2017 | Max-Planck-Institut für chemische Ökologie

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

Im Focus: Wrinkles give heat a jolt in pillared graphene

Rice University researchers test 3-D carbon nanostructures' thermal transport abilities

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

NASA detects solar flare pulses at Sun and Earth

17.11.2017 | Physics and Astronomy

NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures

17.11.2017 | Health and Medicine

The importance of biodiversity in forests could increase due to climate change

17.11.2017 | Studies and Analyses

VideoLinks
B2B-VideoLinks
More VideoLinks >>>