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Two Promising Anti-Cancer Compounds, 2-Hydroxycinnaldehyde and 2-Benzoyloxycinnamaldehyde: Where do we stand?

Author(s):

Haroon Iqbal, Farid Menaa*, Naveed Ullah Khan, Anam Razzaq, Zaheer Ullah Khan, Kifayat Ullah, Robia Kamal, Muhammad Sohail, Gobika Thiripuranathar, Bushra Uzair, Nosheen Fatima Rana, Barkat Ali Khan and Bouzid Menaa  

Abstract:


Natural bioactive compounds with anti-carcinogenic activity are gaining tremendous interest in the field of oncology. Cinnamon, an aromatic condiment commonly used in tropical regions, appeared incredibly promising as adjuvant for cancer therapy. Indeed, its whole or active parts (e.g., bark, leaf) exhibited significant anti-carcinogenic activity, which is mainly due to two cinnamaldehyde derivatives, namely 2-hydroxycinnaldehyde (HCA) and 2-benzoyloxycinnamaldehyde (BCA). In addition to their anti-cancer activity, HCA and BCA exert immunomodulatory, anti-platelets, and anti-inflammatory activities. Highly reactive α,ß-unsaturated carbonyl pharmacophore, called Michael acceptor, contribute to their therapeutic effects. The molecular mechanisms, underlying their anti-tumoral and anti-metastatic effects are miscellaneous, strongly suggesting that these compounds are multi-targeting compounds. Nevertheless, unravelling the exact molecular mechanisms of HCA and BCA remain a challenging matter which is necessary for optimal controlled-drug targeting delivery, safety, and efficiency. Eventually, their poor pharmacological properties (e.g., systemic bioavailability and solubility) represent a limitation, and depend both on their administration route (e.g., per os, intravenously) and the nature of the formulation (e.g., free, smart nano-). This concise review focused on the potential of HCA and BCA as adjuvants in Cancer. We described their medicinal effects as well as provide an update about their molecular mechanisms reported either in-vitro, ex-vivo, or in animal models.

Keywords:

Cinnamon, 2-Hydroxycinnaldehyde, 2-benzoyloxycinnamaldehyde, Anti-cancer adjuvant therapeutics, Phytochemicals, Translational medicine.

Affiliation:

College of Pharmaceutical Sciences, Soochow University, Suzhou, Department of Oncology, California Innovations Corp., San Diego, CA, College of Pharmaceutical Sciences, Soochow University, Suzhou, College of Pharmaceutical Sciences, Soochow University, Suzhou, Department of Pharmacy, COMSATS University, Abbottabad, College of Pharmaceutical Sciences, Soochow University, Suzhou, College of Pharmaceutical Sciences, Soochow University, Suzhou, Department of Pharmacy, School of Pharmacy, Yantai University, Yantai, Institute of Chemistry Ceylon, College of Chemical Sciences, Welikada, Rajagiriya, Department of Bioinformatics and Biotechnology, Islamic International University, Islamabad, Department of Biomedical Engineering & Sciences, School of Mechanical & Manufacturing Engineering, National University of Sciences & Technology, Islamabad, Department of Pharmacy, Gomal University, D.I. Khan, Department of Oncology, California Innovations Corp., San Diego, CA



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