Current State of the Field of Cell-Penetrating Peptides as an Honorific Issue for Professor Ülo Langel

<p>This Special Issue entitled initiated by the editorial team of <em>Pharmaceutics</em> pays homage to Professor Ülo Langel for his remarkable scientific contribution to the field of cell-penetrating peptides (CPPs). </p><p>Prof. Langel graduated from Tartu University Tartu Estonia as a bioorganic chemist in 1974. He has obtained two PhD degrees: in 1980 from Tartu University Tartu Estonia (bioorganic chemistry) and in 1993 from Tartu University/Stockholm University (biochemistry/neurochemistry). Prof. Langel is a Professor at the Department of Biochemistry and Biophysics Stockholm University and at the Institute of Technology Tartu University. Furthermore he is an Associate Professor at The Scripps Research Institute La Jolla CA USA and Honorary Professor at Ljubljana University Slovenia.</p><p>He has been an invited lecturer at numerous international conferences and is a co-author of more than 450 scientific articles and 20 approved or pending patents. His main interest lies in neurochemistry where his research is aimed at studying peptides particularly neuropeptide receptors and drug delivery via cell-penetrating peptides.</p>