Friday, August 8, 2025
Science
No Result
View All Result
  • Login
  • HOME
  • SCIENCE NEWS
  • CONTACT US
  • HOME
  • SCIENCE NEWS
  • CONTACT US
No Result
View All Result
Scienmag
No Result
View All Result
Home Science News Marine

Nature’s 3D printer: bristle worms form bristles piece by piece

May 13, 2024
in Marine
Reading Time: 3 mins read
0
Larva of the marine annelid Platynereis dumerilii, scanning electron micrograph (size scale: 100µm)
66
SHARES
603
VIEWS
Share on FacebookShare on Twitter
ADVERTISEMENT
ADVERTISEMENT

A new interdisciplinary study led by molecular biologist Florian Raible from the Max Perutz Labs at the University of Vienna provides exciting insights into the bristles of the marine annelid worm Platynereis dumerilii. Specialized cells, so-called chaetoblasts, control the formation of the bristles. Their mode of operation is astonishingly similar to that of a technical 3D printer. The project is a collaboration with researchers from the University of Helsinki, Vienna University of Technology and Masaryk University in Brno. The study was recently published in the renowned journal Nature Communications. 

Larva of the marine annelid Platynereis dumerilii, scanning electron micrograph (size scale: 100µm)

Credit: Luis Zelaya-Lainez, Vienna University of Technology

A new interdisciplinary study led by molecular biologist Florian Raible from the Max Perutz Labs at the University of Vienna provides exciting insights into the bristles of the marine annelid worm Platynereis dumerilii. Specialized cells, so-called chaetoblasts, control the formation of the bristles. Their mode of operation is astonishingly similar to that of a technical 3D printer. The project is a collaboration with researchers from the University of Helsinki, Vienna University of Technology and Masaryk University in Brno. The study was recently published in the renowned journal Nature Communications. 

Chitin is the primary building material both for the exoskeleton of insects and for the bristles of bristle worms such as the marine annelid worm Platynereis dumerilii. However, the bristle worms have a somewhat softer chitin – the so-called beta chitin – which is particularly interesting for biomedical applications. The bristles allow the worms to move around in the water. How exactly the chitin is formed into distinct bristles has so far remained enigmatic. The new study now provides exciting insight into this special biogenesis. Florian Raible explains: “The process begins with the tip of the bristle, followed by the middle section and finally the base of the bristles. The finished parts are pushed further and further out of the body. In this development process, the important functional units are created one after the other, piece by piece, which is similar to 3D printing.” 

A better understanding of processes such as these also holds potential for the development of future medical products or for the production of naturally degradable materials. Beta-chitin from the dorsal shell of squid, for example, is currently used as a raw material for the production of particularly well-tolerated wound dressings. “Perhaps in the future it will also be possible to use annelid cells to produce this material,” says Raible. 
  
The exact biological background to this: so-called chaetoblasts play a central role in this process. Chaetoblasts are specialized cells with long surface structures, so-called microvilli. These microvilli harbor a specific enzyme that the researches could show to be responsible for the formation of chitin, the material from which the bristles are ultimately made. The researchers’ results show a dynamic cell surface characterized by geometrically arranged microvilli.

The individual microvilli have a similar function to the nozzles of a 3D printer. Florian Raible explains: “Our analysis suggests that the chitin is produced by the individual microvilli of the chaetoblast cell. The precise change in the number and shape of these microvilli over time is therefore the key to shaping the geometric structures of the individual bristles, such as individual teeth on the bristle tip, which are precise down to the sub-micrometer range.” The bristles usually develop within just two days and can have different shapes; depending on the worm’s stage of development, they are shorter or longer, more pointed or flatter.

In addition to the local collaboration with the Vienna University of Technology and imaging specialists from the University of Brno, the cooperation with the Jokitalo laboratory at the University of Helsinki proved to be a great benefit for the researchers at the University of Vienna. Using their expertise in serial block-face scanning electron microscopy (SBF-SEM), the researchers investigated the arrangement of microvilli in the bristle formation process and proposed a 3D model for the synthesis of bristle formation. First author Kyojiro Ikeda from the University of Vienna explains: “Standard electron tomography is very labor-intensive, as the cutting of the samples and their examination in the electron microscope must be done manually. With this approach, however, we can reliably automate the analysis of thousands of layers.” 

The Raible group is currently working on improving the resolution of the observation in order to reveal even more details about bristle biogenesis.



Journal

Nature Communications

DOI

10.1038/s41467-024-48044-3

Article Title

Dynamic microvilli sculpt bristles at nanometric scale

Article Publication Date

13-May-2024

Share26Tweet17
Previous Post

How do obesity and metabolic syndrome affect women’s risks of breast cancer and cancer-related death?

Next Post

Dramatic increase in fentanyl seized by authorities in last six years

Related Posts

blank
Marine

Selective Salt Crystallization via Simple One-Step Evaporation

August 8, 2025
blank
Marine

What Gives Chiton Teeth Their Iron-Strong Toughness?

August 7, 2025
blank
Marine

Seals on the Move: Tracking Their Coastal Journeys

August 7, 2025
blank
Marine

Catalytic Reactive Membranes: Designing Next-Gen Water Filters

August 7, 2025
blank
Marine

Illuminating Love: Insights into Medaka Courtship Behavior Revealed

August 7, 2025
blank
Marine

Chagos Study Underscores Importance of Extensive Marine Protected Areas

August 7, 2025
Next Post
Dramatic increase in fentanyl seized by authorities in last six years

Dramatic increase in fentanyl seized by authorities in last six years

  • Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study

    Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study

    27531 shares
    Share 11009 Tweet 6881
  • University of Seville Breaks 120-Year-Old Mystery, Revises a Key Einstein Concept

    943 shares
    Share 377 Tweet 236
  • Bee body mass, pathogens and local climate influence heat tolerance

    641 shares
    Share 256 Tweet 160
  • Researchers record first-ever images and data of a shark experiencing a boat strike

    507 shares
    Share 203 Tweet 127
  • Warm seawater speeding up melting of ‘Doomsday Glacier,’ scientists warn

    310 shares
    Share 124 Tweet 78
Science

Embark on a thrilling journey of discovery with Scienmag.com—your ultimate source for cutting-edge breakthroughs. Immerse yourself in a world where curiosity knows no limits and tomorrow’s possibilities become today’s reality!

RECENT NEWS

  • Anthelmintic Impact and Ascaris Infection in Pakistani Children
  • Rare Case: Tracheal Bronchus Complicates Pulmonary Agenesis
  • Microbial Resilience in Arid Soils Fueled by Stochastic Dynamics
  • Studying Bamboo Coral: A Key Mediterranean Ecosystem Indicator

Categories

  • Agriculture
  • Anthropology
  • Archaeology
  • Athmospheric
  • Biology
  • Bussines
  • Cancer
  • Chemistry
  • Climate
  • Earth Science
  • Marine
  • Mathematics
  • Medicine
  • Pediatry
  • Policy
  • Psychology & Psychiatry
  • Science Education
  • Social Science
  • Space
  • Technology and Engineering

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 4,860 other subscribers

© 2025 Scienmag - Science Magazine

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • HOME
  • SCIENCE NEWS
  • CONTACT US

© 2025 Scienmag - Science Magazine

Discover more from Science

Subscribe now to keep reading and get access to the full archive.

Continue reading