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179951

Synthesis, Speciation, DNA Binding, Electrochemical and Antiproliferative Properties of Pd(II) Complexes Designed to Improve the Interaction with DNA

Article

Last updated: 22 Jan 2023

Subjects

-

Tags

Inorganic chemistry

Abstract

With the success of cisplatin, extensive research resulted in the discovery of carboplatin (a second-generation drug), where the chloride is replaced by 1,1-cyclobutanedicarboxylate. In the current study, we continue our previous work on the binding behavior of [Pd(byp)(H2O)2]2+ with structural features enhancing the interaction with DNA. [Pd(byp)(gly)]+ (1) and [Pd(byp)(CBDCA)] (2), where byp is 2,2´-bipyridine, gly is glycine, and CBDCA is cyclobutane-1,1´-dicarboxylic acid, were synthesized and characterized. The stability constants and stoichiometries of the complexes formed between various DNA units and [Pd(byp)(H2O)2]2+ were investigated. The binding properties of (1) and (2) with CT-DNA were analyzed by UV-vis spectroscopy, viscosity measurements, and cyclic voltammmetry. The (Kb) value for complex (1) (Kb= 4.36x103 M−1 ) , suggests an electrostatic binding together with hydrogen bonding with the negative sites of CT- DNA. The higher (Kb) value of complex (2) (Kb= 2.11x104 M−1) indicates an intercalation binding mode, whereby a ring-opening reaction of CBDCA occurs, followed by the reaction with guanosine 5'-monophosphate to form [(Pdbyp)(CBDCA-O)(5'-GMP)]. The results from UV-Vis spectroscopy, thermal denaturation, viscosity, and cyclic voltammetry data, all reveal electrostatic binding of complex (1) and intercalation mode of complex (2). The antitumor effects of the two complexes were tested. The two complexes display dose-dependent anti-proliferation activity with a prediction of improved efficacy against cancer

DOI

10.21608/ejchem.2021.74711.3679

Keywords

Pd(II) amine complexes, CT-DNA, Electronic absorption spectroscopy, Cyclic voltammetry, Cytostatic activity, Stability constants

Authors

First Name

Haneen

Last Name

AL-Gedany

MiddleName

H

Affiliation

Chemistry Department, Faculty of Science, University of Jeddah, Jeddah , Saudi Arabia

Email

haneenaa1@hotmail.com

City

Jeddah

Orcid

-

First Name

Azza

Last Name

Shoukry

MiddleName

Abdelwahab

Affiliation

Department of chemistry, Faculty of Science, Cairo University

Email

sazza@sci.cu.edu.eg

City

Cairo

Orcid

https://orcid.org/00

First Name

Saedah

Last Name

Al‐Mhayawi

MiddleName

R.

Affiliation

Chemistry Department, Faculty of Science, University of Jeddah, Jeddah , Kingdom of Saudi Arabia

Email

sraszyad@gmail.com

City

Jeddah

Orcid

-

Volume

64

Article Issue

7

Related Issue

25275

Issue Date

2021-07-01

Receive Date

2021-04-30

Publish Date

2021-07-01

Page Start

3,913

Page End

3,926

Print ISSN

0449-2285

Online ISSN

2357-0245

Link

https://ejchem.journals.ekb.eg/article_179951.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=179951

Order

64

Type

Original Article

Type Code

297

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

https://ejchem.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023