Cardoso/Hackenberger/Leonhardt

Our long-term goal is to develop and validate novel methods to visualize and manipulate biochemical processes within living cells with fluorescently labeled proteins functionalized for cellular uptake and photoinducible activation. We will utilize artificial cell penetrating peptides and optimize them for intracellular release and bioavailability of cargo proteins. For intracellular binding of target structures we will generate specific nanobodies against the nuclear proteins PCNA and Dnmt1. Different strategies for site-selective modification of proteins including intein expression, incorporation of artificial amino acids by amber suppression and bioorthogonal reactions will be employed to introduce functional modules like fluorescent labels, caged amino acids and artificial cell penetrating groups. 

This functionalization will initially be tested with GFP to evaluate the conjugation of cyclic peptides and will be optimized for enhanced cellular uptake. We will monitor the uptake of modified nanobodies by live cell microscopy and will activate them with short light pulses. Physiological effects on target structures including the disruption of protein interactions will be quantified by automated image analysis. This proposed collaboration, combines expertise in nanobody engineering, bioorthogonal chemistry, cellular uptake mechanisms, microscopy and cell biology. Consequently, this joint effort should lead to the development of entirely new research tools to detect, study and manipulate antigens in living cells.

K. Klamecka, P.M. Severin, L.F. Milles, H.E. Gaub, H. Leonhardt
Phys. Biol. 2015, 12, 056009
Energy profile of nanobody-GFP complex under force
Link to the article

M. Rajan, O. Mortusewicz, U. Rothbauer, F.D. Hastert, K. Schmidthals, A. Rapp, H. Leonhardt*, M.C. Cardoso*
FEBS Open Bio2015, 5, 779-788
Generation of an alpaca-derived nanobody recognizing γ-H2AX
Link to the article

J. Helma, M.C. Cardoso, S. Muyldermans, H. Leonhardt
J Cell Biol2015, 209, 633-644
Nanobodies and recombinant binders in cell biology
Link to the article

D. Schumacher, J. Helma, F.A. Mann, G. Pichler, F. Natale, E. Krause, M.C. Cardoso, C.P.R. Hackenberger, H. Leonhardt
Angew. Chem. Int. Ed. 2015, 54(46), 13787-13791
Versatile and efficient site-specific protein functionalization by tubulin tyrosine ligase
Link to the article

M. Mühlberg, M.G. Hösl, C. Kühne, J. Dernedde, N. Budisa, C.P.R. Hackenberger
Beilstein JOC 2015, 11, 784-791
Orthogonal Dual-Modification of Proteins for the Engineering of Multivalent Protein Scaffolds
Link to the article

C. Witte, V. Martos, H.M. Rose, R. Reinke, S. Klippel, L. Schröder, C.P.R. Hackenberger
Angew. Chem. Int. Ed. 2015, 54(9), 2806-2810 (VIP-Paper)
Live-cell MRI of xenon Hyper-CEST biosensors targeted in metabolically-labeled cell-surface glycans
Link to the article

N. Nischan, H.D. Herce, F. Natale, N. Bohlke, N. Budisa, M.C. Cardoso, C.P.R. Hackenberger
Angew. Chem. Int. Ed. 2015, 54(6), 1950-1953
Covalent Attachment of Cyclic TAT Peptides to GFP Results in Protein Delivery into Live Cells with Immediate Bioavailability
Link to the article

O. Reimann, C. Smet-Nocca, C.P.R. Hackenberger
Angew. Chem. Int. Ed. 2015, 54, 306-310
Traceless Purification and Desulfurization of Tau Protein Ligation Products
Link to the article

M.R.J. Vallée, P. Majkut, D. Krause, M. Gerrits, C.P.R. Hackenberger
Chem. Eur. J. 2015, 21, 970-974
Chemoselective Bioconjugation of Triazole Phosphonites in Aqueous Media
Link to the article

D. Aschenbrenner, D.A. Pippig, K. Klamecka, K. Limmer, H. Leonhardt, H.E. Gaub
PLoS One 2014, e115049
Parallel force assay for protein-protein interactions.
Link to the article

H.D. Herce, A.E. Garcia, M.C. Cardoso
J. Am. Chem. Soc. 2014, 136, 17459-17467
Fundamental molecular mechanism for the cellular uptake of guanidinium-rich molecules
Link to the article

R. Wieneke, N. Labòria, M. Rajan, A. Kollmannsperger, F. Natale, M.C. Cardoso, R. Tampé
J. Am. Chem. Soc. 2014, 136, 13975-13978
Live-cell Targeting of His-tagged Proteins by Multivalent N-Nitrilotriacetic Acid Carrier Complexe
Link to the article

D. Schumacher, C.P.R. Hackenberger
Curr. Opin. Chem. Biol. 2014, 22, 62-69
More than add-on: chemoselective reactions for the synthesis of functional peptides and proteins
Link to the article

J. Bertran-Vicente, R.A. Serwa, M. Schümann, P. Schmieder, E. Krause, C.P.R. Hackenberger
J. Am Chem. Soc. 2014, 136(39), 13622-13628
Site-Specifically Phosphorylated Lysine Peptides
Link to the article

P. Majkut, I. Claußnitzer, H. Merk, C. Freund, C.P.R. Hackenberger, M. Gerrits
PLoS ONE 2013, 8(12): e82352
Completion of Proteomic Data Sets by K_d Measurement Using Cell-Free Synthesis
of Site-Specifically Labeled Proteins
Link zum Artikel

H.D. Herce, W. Deng, J. Helma, H. Leonhardt, M.C. Cardoso
Nat. Commun 2013, 4, 2660
Visualization and targeted disruption of protein interactions in living cells.
Link to the article

N. Nischan, A. Chakrabarti, R.A. Serwa, P.H.M. Bovee-Geurts, R. Brock, C.P.R. Hackenberger
Angew. Chem.2013, 125, 45, 12138-12142
Stabilisierung von Peptiden für intrazelluläre Anwendungen mit Phosphoramidat-verzweigten Polyethylenglycol-Ketten
Angew. Chem. Int. Ed.2013, 52, 45, 11920-11924
Stabilization of Peptides for Intracellular Applications by Phosphoramidate-Linked PEG Chains
Link to the article

M.R.J. Vallée, L.M. Artner, J. Dernedde, C.P.R. Hackenberger
Angew. Chem. 2013, 125, 9682-9686
Angew. Chem. Int. Ed.2013, 52, 9504-9508
Alkyne phophonites for sequential azide-azide couplings
Link to the article