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Review
. 2020 Jan 28:10:1614.
doi: 10.3389/fphar.2019.01614. eCollection 2019.

Phytochemicals in Cancer Treatment: From Preclinical Studies to Clinical Practice

Amit S Choudhari  1 , Pallavi C Mandave  2 , Manasi Deshpande  3 , Prabhakar Ranjekar  4 , Om Prakash  5   6
Affiliations
Review

Phytochemicals in Cancer Treatment: From Preclinical Studies to Clinical Practice

Amit S Choudhari et al. Front Pharmacol. .

Erratum in

Abstract

Cancer is a severe health problem that continues to be a leading cause of death worldwide. Increasing knowledge of the molecular mechanisms underlying cancer progression has led to the development of a vast number of anticancer drugs. However, the use of chemically synthesized drugs has not significantly improved the overall survival rate over the past few decades. As a result, new strategies and novel chemoprevention agents are needed to complement current cancer therapies to improve efficiency. Naturally occurring compounds from plants known as phytochemicals, serve as vital resources for novel drugs and are also sources for cancer therapy. Some typical examples include taxol analogs, vinca alkaloids such as vincristine, vinblastine, and podophyllotoxin analogs. These phytochemicals often act via regulating molecular pathways which are implicated in growth and progression of cancer. The specific mechanisms include increasing antioxidant status, carcinogen inactivation, inhibiting proliferation, induction of cell cycle arrest and apoptosis; and regulation of the immune system. The primary objective of this review is to describe what we know to date of the active compounds in the natural products, along with their pharmacologic action and molecular or specific targets. Recent trends and gaps in phytochemical based anticancer drug discovery are also explored. The authors wish to expand the phytochemical research area not only for their scientific soundness but also for their potential druggability. Hence, the emphasis is given to information about anticancer phytochemicals which are evaluated at preclinical and clinical level.

Keywords: anticancer; clinical; medicinal plants; phytochemicals; preclinical.

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Figures

Figure 1
Figure 1
Chemical structures of some anticancer phytochemicals in preclinical trials.
Figure 2
Figure 2
Chemical structures of some anticancer agents in clinical trials.
Figure 3
Figure 3
Chemical structures of some anticancer agents in clinical use.
See this image and copyright information in PMC

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