Anna Rising

About me

My basic degree is doctor of veterinary medicine, and I graduated from SLU in 2003. After working as a veterinarian a few years, I decided to get a PhD and joined an EU project, which aimed at producing artificial spider silk for medical applications. The project started with me going on an “adventure trip” to South Africa to collect 100 spiders in the wild. Since then, I am fascinated by this impressive material, and the spiders that produce it.

In 2007 I received my PhD, and soon after we started the company Spiber Technologies AB to commercialise our research findings. I was CEO from 2008 to 2012. In 2011-2017 I worked as an Assistant Professor at Karolinska Institutet, where I still work part time, and  as an Extension Specialist/Senior Lecturer in Translational Medicine at SLU. Since 2018 I am professor of veterinay medical biochemistry at SLU. In 2024 I was appointed Wallenberg Scholar and two years later the team and our artificial silk fibers won the Global Change Award from H&M Foundations.

Research and area of expertise

My research area and area of expertise include biomimicr, bioinspired materials, regenerative medicine, molecular biotechnology and medical biochemistry.

We can artificially synthesize spider silk fibers that are as tough as native spider silk fibers which makes them highly interesting as replacements for petroleum based (plastic) fibers. Our production method is biomimetic, meaning that it is completely water based and void of denaturing chemicals and high temperatures. We focus basic studies of the silk producing organs in spiders, on scaling up the production of artificial spider silk, develop fibers for the textile industry and use fibers and hydrogels for project related to regenerative medicine (tissue repair).

Photo: Andersson, Jia et al. Nature Chemical Biology 2017

In another project we study a specific part, NT, of the spider silk protein, which increases the solubility of the spider silk proteins when they are stored in the spider’s silk glands. The solubility enhancing properties of NT apply also when NT is fused to other proteins with low solubility. Therefore, we use NT to produce protein drugs, which today are difficult or impossible to manufacture.

The spider silk proteins we produce form transparent hydrogels when the temperature is increased to 37 degrees. This discovery is now being developed further in projects related to injectable materials and as aplatform for immobilizing different proteins in a 3D matrix (Arndt et al. Nat Commun. 2022; Arndt, Chatterjee et al. Adv Funct Mater. 2023)

Photo: Andersson, Jia et al. Nature Chemical Biology 2017

Current research

My research has several main focuses:

1.  To make artificial spider silk replicas.

2. To use spider silk to regenerate damaged tissue and to be able to culture stem cells under defined conditions

3. to use Nature’s own solubility increasing domain (NT) to develop poorly soluble proteins (drugs).

4. to explore how spiders spin their silk and make better biomimetic silk fibers and bioinspired solutions for the life science industry

Photo: Andersson, Jia et al. Nature Chemical Biology 2017

Research problems

How does the spiders' silk glands manage to produce extreme amounts of proteins and store them without encountering problems associated with premature aggregation?

Can we spin artificial spider silk fibers with the same mechanical properties as the natural spider silk fiber?

Can artificially produced spider silk be used as implants to replace damaged tissues and organs?

Can NT be used for the production of valuable and aggregation prone proteins with low solubility?

Film 1. Artificial spiderweb is made when a proteinKonstgjord spindeltråd som bildas när en proteinlösning sprutas ut i en buffrad vattenlösning. Publicerad av: Anna Rising & Jan Johansson (Sveriges lantbruksuniversitet & Karolinska Institutet). Källa: Andersson et.al., Biomimetic spinning of artificial spider silk from a chimeric minispidroin, Nature Chemical Biology, http://dx.doi.org/10.1038/nchembio.2269. 

Film 2. Konstgjord spindeltråd rullas upp på en roterande ram i luften. Publicerad av: Anna Rising & Jan Johansson (Sveriges lantbruksuniversitet & Karolinska Institutet). Källa: Andersson et.al., Biomimetic spinning of artificial spider silk from a chimeric minispidroin, Nature Chemical Biology, http://dx.doi.org/10.1038/nchembio.2269. 

The fibers are being collected onto motorized wheels, see movie published in Schmuck et al. Materials Today. 2021:

https://www.sciencedirect.com/science/article/pii/S1369702121002546#m0010

More information:

https://www.slu.se/en/departments/Animal-Biosciences/forskningsprojekt/the-seven-spider-silks---a-unique-source-for-biomimetic-material-production/

https://www.slu.se/en/departments/Animal-Biosciences/forskningsprojekt/scaling-up-and-developing-the-production-of-artificial-spider-thread/

Photo: Andersson, Jia et al. Nature Chemical Biology 2017

My research colleagues

I share my time between the Swedish University of Agricultural Sciences (SLU) and Karolinska Institutet (KI).

SLU:  Viktoria Langwallner, Tomás Bohn Pessatti, Gabriele Greco, Elin Karlsson, Karin Tufvesson, Benjamin Schmuck, Johan Reimegård (SciLife Lab)

KI: Olga Shilkova, Tobias Fietze

We work in close collaboration with Jan Johansson (KI) for protein biochemistry realted questions, and with:

Kristaps Jaudzems (LiOS, Riga), NMR spectroscopy

Michael Landreh (KI), Mass spectrometry

Yael Politi (Technical U of Dresden),  FIB-SEM, XRF, SAXS and WAXS

Lena Holm (SLU), histology

Nicola Pugno (Trento U, Italien), Native spider silk, mechanical testing of fibers

Extension

Spider silk has long been used in folk medicine. I aim to use spider silk in the treatment of diseases and injuries, for which there is no or poor treatment options available due to the lack of suitable materials. I also work to facilitate production of protein-based drugs together with a pharmaceutical company.

By close collaborations with national and international partners in industry and at universities, my research will benefit society at large.

Our research has been on public display at exhibitions at Nobel Museum in Stockholm, Arbetets Museum in Norrköping, Skansen Aquarium (Skansen-Akvariet), Sweden, the World Expo 2010 in Shanghai, and Paris Natural History Museum, 2011-2012.

Photo: Marlene Andersson

Teaching

I teach on the programme in Veterinary Medicine at SLU

Other professional activities

Co-founder, Spiber Technologies AB

Senior Researcher, Karolinska Institutet

Advisory Board, “Chemical Mechanisms of Life” a Center of Excellence at the Uppsala University

Current Funding

Knut och Alice Wallenberg Foundation (Wallenberg Scholar)

Olle Engkvist Stiftelse

Europeiska forskningsrådet (ERC) Consolidator grant

ERC Proof of Concept grant

Vetenskapsrådet

Formas

Knut och Alice Wallenberg Foundation (DDLS-WASP)

CIMED (Stockholms Läns Landsting, Huddinge Kommun, Karolinska Institutet)

For details and past funding please check my ORCID, link can be found further down under Links

Read more

https://www.svt.se/nyheter/vetenskap/ny-upptackt-sa-spinner-spindeln-sitt-starka-nat

National News in SVT, Rapport, July 2021: https://www.svt.se/nyheter/inrikes/forskning-om-konstgjord-spindeltrad-gar-framat

Dagens Nyheter, Aug 2021: https://www.dn.se/sverige/sa-har-forskarna-tagit-fram-12-mil-konstgjord-spindeltrad/

TV4 Nyhetsmorgon. Interview. Sep 15, 2017. https://www.tv4.se/nyhetsmorgon/klipp/är-du-nya-spindelmannen-3934570

BBC. Interview. Sep 2017. http://www.bbc.co.uk/programmes/w3csv3dw

RadioScience. Podcast. 2016. http://www.radioscience.se/tag/anna-rising/

Spinning like a spider. Academia Net. Interview Sep 11, 2017. http://www.academia-net.org/news/spinning-like-a-spider/1500585

Silk gland mimic spins strong fibres. Nature. 541, 137. Jan 12, 2017. doi:10.1038/541137b

http://www.nyteknik.se/innovation/sa-hittade-de-nyckeln-till-konstgjord-spindeltrad-6817138

http://www.csmonitor.com/Science/2017/0111/How-did-scientists-create-the-strongest-artificial-spider-silk-yet

http://www.seeker.com/device-spins-super-strong-spider-silk-that-could-one-day-repair-nerves-2186281478.html

http://www.forbes.com/sites/carmendrahl/2017/01/09/scientists-have-finally-figured-out-how-to-spin-artificial-silk-the-way-spiders-do/#6812607c3880

http://www.wsj.com/articles/new-synthetic-spider-silk-offers-wound-stitching-potential-researchers-say-1484049601

https://www.researchgate.net/blog/post/spinning-super-strong-synthetic-spider-silk

http://www.unt.se/nyheter/uppsala/uppsalaforskare-gor-varldens-starkaste-spindeltrad-4497162.aspx

http://www.livescience.com/57458-strong-spider-silk-produced.html

See https://spider-silk-lab.com/

Selection of popular scientific presentations and interviews
https://www.wtin.com/article/2026/june/22-06-26/researchers-develop-spider-silk-inspired-fibres/?freeviewlinkid=209622

https://impactloop.se/artikel/de-harmar-spindlar-for-att-skapa-framtidens-textil-vinner-h-m-pris

https://kemisamfundet.se/slu-forskare-tar-fram-fargad-spindeltrad/

https://www.gp.se/livsstil/svenska-forskare-tillverkar-spindeltrad-varldens-starkaste-material.9e32e913-07e0-43f4-8910-9da264a3d87b

https://www.newscientist.com/article/mg26535260-200-could-spider-silk-be-the-answer-to-sustainable-fashion/

https://www.svt.se/nyheter/vetenskap/ny-upptackt-sa-spinner-spindeln-sitt-starka-nat

PODCAST: Impossible fibers https://creators.spotify.com/pod/profile/tim1700/episodes/Anna-Rising-e33t94g

BBC. Interview. Sep 2017. http://www.bbc.co.uk/programmes/w3csv3dw

RadioScience. Podcast. 2016. http://www.radioscience.se/tag/anna-rising/

Spinning like a spider. Academia Net. Interview Sep 11, 2017. http://www.academia-net.org/news/spinning-like-a-spider/1500585

Silk gland mimic spins strong fibres. Nature. 541, 137. Jan 12, 2017. doi:10.1038/541137b https://www.nature.com/articles/541137b

http://www.csmonitor.com/Science/2017/0111/How-did-scientists-create-the-strongest-artificial-spider-silk-yet

http://www.seeker.com/device-spins-super-strong-spider-silk-that-could-one-day-repair-nerves-2186281478.html

http://www.forbes.com/sites/carmendrahl/2017/01/09/scientists-have-finally-figured-out-how-to-spin-artificial-silk-the-way-spiders-do/#6812607c3880

http://www.wsj.com/articles/new-synthetic-spider-silk-offers-wound-stitching-potential-researchers-say-1484049601

Selected original publications
Tufvesson K, Langwallner V, Greco G, Karlsson E, Bohn Pessatti T, Stadlmayr A, Leppert A, Landreh M, Rising A, Schmuck B. Liquid-liquid phase separation enables chromatography-free purification and high-performance spidroin-amyloid hybrid silk fibers. Proc. Natl. Acad. Sci. U.S.A. 123, 28. 2026 https://doi.org/10.1073/pnas.2601661123

Bohn Pessatti T, Schmuck B, Grego G, Stadlmayr S, Karlsson E, Gross B, Leppert A, Landreh M, Rising A. Intrinsically colored artificial silk fibers made from mini-spidroin fusion proteins. Communications Materials. 7, 70, 2026 https://www.nature.com/articles/s43246-026-01079-z

Greco G, Schmuck B, Fazio V, Puglisi G, Florio G, Pugno NM, Fambri, L, Rising, A. Temperature-induced effects on wet-spun artificial spider silk fibers. Advanced Functional Materials. 2025. Apr 10, 35(15), 2418435 https://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.202418435

Sonavane S, Hassan S, Chatterjee U, Soler L, Holm L, Mollbrink A, Greco G, Fereydouni N, Vinnere Pettersson O, Bunikis I, Churcher A, Lantz H, Johansson J, Reimegård J, Rising A. Origin, Structure and Composition of the Spider Major Ampullate Silk Fiber revealed by Genomics, Proteomics, and Single-Cell and Spatial Transcriptomics. Science Advances. 2024. Aug 16; 10(33):eadn0597  https://www.science.org/doi/epdf/10.1126/sciadv.adn0597

Arndt T, Chatterjee U, Shilkova O, Francis J, Lundkvist J, Johansson D, Schmuck B, Greco G, Ekblad Nordberg Å, Li Y, Wahlberg LU, Langton M, Johansson J, Götherström C, Rising A. Tunable recombinant spider silk protein hydrogels for drug release and 3D cell culture. Advanced Functional Materials. 2024. https://doi.org/10.1002/adfm.202303622

Leppert A, Chen G, Lama D, Sahin C, Railaite V, Shilkova O, Arndt T, Marklund E, Lane D, Rising A, Landreh M. Liquid-Liquid Phase Separation Primes Spider Silk Proteins for Fiber Formation via a Conditional Sticker Domain. Nano Letters. 2023, 23, 12, 5836–5841. https://pubs.acs.org/nalefd/article/23/12/5836/312549/Liquid-Liquid-Phase-Separation-Primes-Spider-Silk

Rising A, Harrington M. Biological materials processing: Time-tested tricks for sustainable fiber production. Chemical Reviews. 2023 Mar 8;123(5):2155-2199. https://pubs.acs.org/chreay/article-abstract/123/5/2155/317188/Biological-Materials-Processing-Time-Tested-Tricks?redirectedFrom=fulltext

Schmuck B, Greco G, Bohn Pessatti T, Sonavane S, Langwallner V, Arndt T, Rising A. Strategies for making high-performance artificial spider silk fibers. Advanced Functional Materials. 2024. Aug 28; 34(35): 2305040.  https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.202305040

Arndt T, Jaudzems K, Shilkova O, Francis J, Johansson M, Laity PR, Sahin C, Chatterjee U, Kronqvist N, Barajas-Ledesma E, Kumar R, Chen G, Strömberg R, Abelein A, Langton M, Landreh M, Barth, Holland C, Johansson J, Rising A.  Spidroin N-terminal domain forms amyloid-like fibril based hydrogels and provides a protein immobilization platform. Nature Communications. 2022. 13(1): 1-14. https://www.nature.com/articles/s41467-022-32093-7

Arndt T, Greco G, Schmuck B, Bunz J, Shilkova O, Francis J, Pugno NM, Jaudzems K, Berth A, Johansson J, Rising A. Engineered spider silk proteins for biomimetic spinning of fibers with toughness equal to spider dragline silks. Adv Funct Mater. 2022. Mar 25; https://doi.org/10.1002/adfm.202200986

Rising A & Johansson J. Doing what spiders cannot - a road map to supreme artificial silk fibers. ACS Nano. 2021. Feb 23;15(2):1952-1959. https://pubs.acs.org/ancac3/article-pdf/15/2/1952/16503012/nn0c08933.pdf

Schmuck B, Greco G, Barth A, Pugno NM, Johansson J. Rising A. High yield production of a super-soluble miniature spidroin for biomimetic high-performance materials. Materials Today. 2021. Nov, 50:16-23. https://www.sciencedirect.com/science/article/pii/S1369702121002546

Otikovs M, Andersson M, Jia Q, Nordling K, Meng Q, Andreas LB, Pintacuda G, Johansson J, Rising A, Jaudzems K. Degree of biomimicry of artificial spider silk spinning assessed by NMR spectroscopy. Angew Chem Int Ed Engl. 2017. Oct 2; 56(41):12571-12575. https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201706649

Andersson, M., Jia, Q., Abella, A., Lee, X-Y., Landreh, M., Purhonen, P., Hebert, H., Tenje, M., Robinson, C. V., Meng, Q., Plaza, G.R., Johansson, J., Rising, A. Biomimetic spinning of artificial spider silk from a chimeric minispidroin. Nat Chem Biol. 2017 Mar;13(3):262-264. https://www.nature.com/articles/nchembio.2269

Kronqvist N, Sarr M, Lindqvist A, Nordling K, Otikovs M, Venturi L, Pioselli B, Purhonen P, Landreh M, Sjöberg L, Robinson CV, Pelizzi N, Jörnvall H, Hebert H, Jaudzems K, Curstedt T, Rising A, Johansson J. Efficient protein production inspired by how spiders make silk. Nat Commun. 2017 May 23;8:15504 https://www.nature.com/articles/ncomms15504

Kronqvist, N., Otikovs, M., Chmyrov, V., Chen, G., Andersson M., Nordling, K., Landreh, M., Sarr, M., Jörnvall, H, Wennmalm, S., Widengren, J., Meng, Q., Rising, A., Otzen, D.,  Knight, S. D., Jaudzems, K., Johansson, J.  Sequential pH-driven dimerization and stabilization of the N-terminal domain enables rapid spider silk formation Nat Comm. 2014. https://www.nature.com/articles/ncomms4254

Andersson M, Chen G, Otikovs M, Landreh M, Nordling K, Kronqvist N, Westermark P, Jörnvall H, Knight S, Ridderstråle Y, Holm L, Meng Q, Jaudzems K, Chesler M, Johansson J, Rising A. Carbonic Anhydrase Generates CO2 and H+ That Drive Spider Silk Formation Via Opposite Effects on the Terminal Domains. PLoS Biol. 2014 Aug 5;12(8):e1001921 https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.1001921

Wu S, Johansson J, Damdimopoulou P, Shahsavani M, Falk A, Hovatta O,Rising A. Spider silk for xeno-free long-term self-renewal and differentiation of human pluripotent stem cells. Biomaterials. 2014 Oct;35(30):8496-502.

Lewicka, M., Hermanson, O., Rising, A. Recombinant spider silk matrices for neural stem cell cultures. Biomaterials, 2012. 33(31):7712-7717 

Askarieh, G., Hedhammar, M., Nordling, K., Saenz, A., Casals, C., Rising, A., Johansson J., Knight S.D. Self-assembly of spider silk proteins is controlled by a pH-sensitive relay. Nature. 2010, 465:236-239. https://pubmed.ncbi.nlm.nih.gov/20463740/

Lecture at professor installation ceremony

About spider silk and what we do

My ORCID

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