TY  - JOUR
AU  - Poorebrahim, Mansour
AU  - Abazari, Mohammad Foad
AU  - Moradi, Leila
AU  - Shahbazi, Behzad
AU  - Mahmoudi, Reza
AU  - Kalhor, Hourieh
AU  - Askari, Hassan
AU  - Teimoori-Toolabi, Ladan
TI  - Multi-targeting of K-Ras domains and mutations by peptide and small molecule inhibitors.
JO  - PLoS Computational Biology
VL  - 18
IS  - 4
SN  - 1553-734X
CY  - San Francisco, Calif.
PB  - Public Library of Science
M1  - DKFZ-2022-00843
SP  - e1009962 -
PY  - 2022
N1  - #EA:D122#
AB  - K-Ras activating mutations are significantly associated with tumor progression and aggressive metastatic behavior in various human cancers including pancreatic cancer. So far, despite a large number of concerted efforts, targeting of mutant-type K-Ras has not been successful. In this regard, we aimed to target this oncogene by a combinational approach consisting of small peptide and small molecule inhibitors. Based on a comprehensive analysis of structural and physicochemical properties of predominantly K-Ras mutants, an anti-cancer peptide library and a small molecule library were screened to simultaneously target oncogenic mutations and functional domains of mutant-type K-Ras located in the P-loop, switch I, and switch II regions. The selected peptide and small molecule showed notable binding affinities to their corresponding binding sites, and hindered the growth of tumor cells carrying K-RasG12D and K-RasG12C mutations. Of note, the expression of K-Ras downstream genes (i.e., CTNNB1, CCND1) was diminished in the treated Kras-positive cells. In conclusion, our combinational platform signifies a new potential for blockade of oncogenic K-Ras and thereby prevention of tumor progression and metastasis. However, further validations are still required regarding the in vitro and in vivo efficacy and safety of this approach.
LB  - PUB:(DE-HGF)16
C6  - pmid:35472201
DO  - DOI:10.1371/journal.pcbi.1009962
UR  - https://inrepo02.dkfz.de/record/179694
ER  -