Mikko Ora
Senior Lecturer
mikora@utu.fi +358 29 450 3196 +358 50 328 5911 Office: K219 ORCID identifier: https://orcid.org/0000-0001-5125-6127 |
Organic Chemistry; Kinetics; Nucleotides; Prodrugs
M.Sc. 1994; Ph.D. 1999 (Bioorganic chemistry); Adjunct Professor 2006 (Physical organic chemistry)
Senior Lecturer since 2006
Structurally modified nucleotides have received attention as a means to combat against viral infections, cancer and hereditary diseases. The research is focused on pro-drug models of nucleotides. The goal is to develop the degradable lipophilic carriers which are used to improve the cellular membrane penetration of the negatively charged nucleotides. To obtain mechanistic information on the chemical hydrolysis and enzymatic cleavage of the protecting groups, the kinetic studies of the pro-drugs are of interest.
The small RAS oncoproteins play a crucial role in human cancers and are, hence, a target in anticancer drug discovery. In spite of numerous efforts, a direct small-molecule signalling inhibitor drug of mutant RAS has not been able to develop. The aim of the study is to provide a potent method to suppress oncogenic RAS signalling with phosphotriester derivatives.
KEMI6110 Organic Chemistry
KEMI6124 B.Sc.Laboratory Project, Organic Chemistry and Chemical Biology
- Tuning the Solubility of Soluble Support Constructs in Liquid Phase Oligonucleotide Synthesis (2024)
- Journal of Organic Chemistry
(A1 Refereed original research article in a scientific journal) - 5'-O-(2-Isopropoxyprop-2-yl)-protected Phosphoramidite Building Blocks in the Liquid Phase Oligonucleotide Synthesis (2023)
- European Journal of Organic Chemistry
(A1 Refereed original research article in a scientific journal) - Modulating leishmanial pteridine metabolism machinery via some new coumarin-1,2,3-triazoles: Design, synthesis and computational studies (2023)
- European Journal of Medicinal Chemistry
(A1 Refereed original research article in a scientific journal) - Organomercury oligonucleotide conjugates as artificial ribonucleases (2023)
- Journal of Inorganic Biochemistry
(A1 Refereed original research article in a scientific journal) - Stereo-Controlled Liquid Phase Synthesis of Phosphorothioate Oligonucleotides on a Soluble Support (2023)
- Journal of Organic Chemistry
(A1 Refereed original research article in a scientific journal) - Cleavage of an RNA Model Compound by an Arylmercury Complex (2021)
- ChemBioChem
(A1 Refereed original research article in a scientific journal) - Stability of the Phosphotriester PDE6D Inhibitors (2021)
- ChemistrySelect
(A1 Refereed original research article in a scientific journal) - Mercury(II)-catalyzed cleavage, isomerization and depurination of RNA and DNA model compounds and desulfurization of their phosphoromonothioate analogs (2020)
- Catalysts
(A1 Refereed original research article in a scientific journal) - PDE6D Inhibitors with a New Design Principle Selectively Block K-Ras Activity (2020)
- ACS Omega
(A1 Refereed original research article in a scientific journal) - Synthesis and Deprotection of Biodegradably and Thermally Protected Dinucleoside-2 ',5 '-Monophosphate Prodrug Model of 2-5A (2017)
- Chemistry and Biodiversity
(A1 Refereed original research article in a scientific journal) - 4-(Acetylthio)-2,2-dimethyl-3-oxobutyl and 4-(tert-butyldisulfanyl)-2,2- dimethyl-3-oxobutyl as protecting groups for nucleoside 5´-Phosphoramidates derived from L-alanine methyl ester (2015)
- European Journal of Organic Chemistry
(A1 Refereed original research article in a scientific journal) - Synthesis and stability of nucleoside 3´,5´-cyclic phosphate triester masked with enzymatically and thermally labile phosphate protecting groups (2015)
- European Journal of Organic Chemistry
(A1 Refereed original research article in a scientific journal) - 4-Acetylthio-2,2-dimethyl-3-oxobutyl group as an esterase- and thermo-labile protecting group for oligomeric phosphodiesters (2014)
- European Journal of Organic Chemistry
(A1 Refereed original research article in a scientific journal) - 2,2-Disubstituted 4-acylthio-3-oxobutyl groups as esterase- and thermolabile protecting groups of phosphodiesters (2013)
- Journal of Organic Chemistry
(A1 Refereed original research article in a scientific journal) - 2-[(Acetyloxy)methyl]-4-(acetylsulfanyl)-2-(ethoxycarbonyl)-3-oxobutyl group: a thermolabile protecting group for phosphodiesters (2013)
- Helvetica Chimica Acta
(A1 Refereed original research article in a scientific journal) - Hydrolytic reactions of cyclic bis(3 '-5 ')diadenylic acid (c-di-AMP) (2013)
- Journal of Physical Organic Chemistry
(A1 Refereed original research article in a scientific journal) - 5 ',5 '-Phosphodiesters and esterase labile triesters of 2 '-C-methylribonucleosides (2012)
- Arkivoc
(A1 Refereed original research article in a scientific journal) - Synthesis and Enzymatic Deprotection of Fully Protected 2 '-5 ' Oligoadenylates (2-5A): Towards a Prodrug Strategy for Short 2-5A (2012)
- Chemistry and Biodiversity
(A1 Refereed original research article in a scientific journal) - Synthesis of 3',5'-Cyclic Phosphate and Thiophosphate Esters of 2'-C-Methyl Ribonucleosides (2012)
- Helvetica Chimica Acta
(A1 Refereed original research article in a scientific journal) - Thio effects as a tool for mechanistic studies of the cleavage of RNA phosphodiester bonds: the chemical basis (2012) From Nucleic Acid Sequences to Molecular Medicine Mikko Ora, Tuomas Lönnberg, Harri Lönnberg
(A3 Refereed book chapter or chapter in a compilation book)