Identification of sulfonic acids as efficient ecto-5'-nucleotidase inhibitors
Jamshed Iqbal1, Aamer Saeed, Rabia Raza
1Centre for Advanced Drug Research, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan.
Abstract:
Ecto-5'-nucleotidase (CD73) is well known for its implication in cancer. Inhibition of ecto-5'-nucleotidases is thought to provide an attractive approach to cancer therapy. This study identifies sulfonic acid compounds as efficient inhibitors of ecto-5'-nucleotidases. The compounds were tested against recombinant human and rat ecto-5'-nucleotidases. The most potent new sulfonic acid inhibitor 6-amino-4-hydroxynaphthalene-2-sulfonic acid (1) of ecto-5'-nucleotidase had an IC₅₀ of 1.32 ± 0.09 μM for the human and 10.4 ± 3.3 μM for the rat enzyme. Generally, all compounds were more active against the human enzyme. Plausible binding mode models were developed for this new class of inhibitors. Furthermore, several sulfonic acid inhibitors were efficient cytotoxic agents when tested on H157 cancer cell lines. Hence, new ecto-5'-nucleotidases inhibitors displayed significant potential for further development as compounds for anti-cancer therapy.
Insights
New sulfonic acid compounds effectively inhibit ecto-5'-nucleotidase (CD73), a target in cancer therapy. These potent inhibitors also demonstrated cytotoxicity against cancer cells, showing promise for anti-cancer drug development.
Area of Science:
- Biochemistry
- Medicinal Chemistry
- Oncology
Background:
- Ecto-5'-nucleotidase (CD73) plays a significant role in cancer progression.
- Targeting CD73 is a promising strategy for developing novel cancer therapies.
Purpose of the Study:
- To identify and characterize novel inhibitors of ecto-5'-nucleotidase (CD73).
- To evaluate the anti-cancer potential of newly identified sulfonic acid compounds.
Main Methods:
- Synthesis and testing of sulfonic acid compounds against recombinant human and rat ecto-5'-nucleotidases.
- Determination of IC50 values for enzyme inhibition.
- Development of plausible binding mode models.
- Assessment of cytotoxicity against H157 cancer cell lines.
Main Results:
- Sulfonic acid compounds were identified as potent inhibitors of ecto-5'-nucleotidase.
- The compound 6-amino-4-hydroxynaphthalene-2-sulfonic acid showed high potency (IC50 = 1.32 ± 0.09 μM for human enzyme).
- Inhibitors were generally more effective against the human enzyme and exhibited significant cytotoxicity in cancer cell lines.
Conclusions:
- Sulfonic acid derivatives represent a new class of effective ecto-5'-nucleotidase inhibitors.
- These compounds hold significant potential for further development as anti-cancer therapeutic agents.
