Morphogenic Signaling Molecules

More and more examples show that bacterially produced small molecules contribute to the host’s fitness and development by acting as biological information carrier to maintain and modulate the multilateral interaction network. But fully characterized examples are still rare, and the mode-of-actions of those molecules are often not well understood.

We are investigating the model system Hydractinia echinata, a marine hydroid polyp, to identify key metabolites that induce biofouling.

The life cycle of the marine hydroid polyp H. echinata has a motile (larvae) and sessil reproductive phase (polyp). The irreversible morphogenesis from the motile larvae to the sessile primary polyp is induced by specific molecules from Pseudoalteromonas spp. But the structure determination and and mode of action of the signaling molecules has been so far elusive. We use a broad range of molecular biology methods to identify the bacterial cues and the receptor in the marine hydroid polyp to understand the interaction mechanisms in more detail.

 

Microorganisms protect and shape the colonial hydroid polyp Hydraktinia

Staff

Jamshid Amiri Moghaddam
Christine Beemelmanns
Michel Große
Huijuan Guo
Chia-Chi Peng

Publications

Guo H, Rischer M, Westermann M, Beemelmanns C (2021) Two distinct bacterial biofilm components trigger metamorphosis in the colonial hydrozoan Hydractinia echinata. mBio 12(3), e0040121.
Raguž L, Peng CC, Kaiser M, Görls H, Beemelmanns C* (2021) A modular approach to the antifungal Sphingofungin family: Concise total synthesis of Sphingofungin A and C. Angew Chem Int Ed [Accepted]
Ghodsi Z, Kalbassi MR, Farzaneh P, Mobarez AM, Beemelmanns C, Amiri Moghaddam J (2020) Immunomodulatory function of antimicrobial peptide Ec-Hepcidin1 modulates the induction of inflammatory gene expression in primary cells of caspian trout (Salmo trutta caspius Kessler, 1877). Fish Shellfish Immunol 104, 55-61.
Leichnitz D, Raguž L, Beemelmanns C (2017) Total synthesis and functional analysis of microbial signalling molecules. Chem Soc Rev 46(20), 6330-6344. (Review)
Rischer M, Leichnitz D, Beemelmanns C (2017) Bakterien-induzierte Morphogenese mariner Eukaryoten Wissenschaft. BIOSpektrum 2017(6), 634-637. (Review)
Klassen JL, Rischer M, Wolf T, Guo H, Shelest E, Clardy J, Beemelmanns C (2015) Genome Sequences of Three Pseudoalteromonas Strains P1-8, P1-11 and P1-30 Isolated from the Marine Hydroid Hydractinia echinata Genome Announc. 3(6), e01380-15.
Klassen JL, Wolf T, Rischer M, Guo H, Shelest E, Clardy J, Beemelmanns C (2015) Draft Genome Sequences of Six Pseudoalteromonas sp. Strains P1-7a, P1-9, P1-13-1a, P1-16-1b, P1-25 and P1-26, which Induce Larval Settlement and Metamorphosis in Hydractinia echinata Genome Announc. 3(6), e01477-15.

Funding

Dieses Projekt wurde 2018 mit dem ERC Starting Grant MORPHEUS ausgezeichnet!