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    Cancer metabolism regulation by phytonutrients
    (Elsevier, 2022) Riaz, Ammara; Zara, Rabia; Bushra, Gul; Kanwal, Nazia; Sadiqa, Ayesha; Shareef, Farzana; Sarfraz, Iqra
    In spite of the advanced researches, preventive measures, and treatment options, cancer remains a growing ailment all over the world and its prevalence is estimated to increase in future. Cellular metabolic alterations have been documented as a hallmark of cancer. Metabolic regulation is an intricately coupled process whose deregulation leads to tumor progression as well as metastasis. In order to thrive in the living system, cancer cells adapt different metabolic pathways (bioenergetics and biosynthesis). They replenish their metabolic demands by switching from normal metabolism to cancer metabolism by the process of metabolic rewiring. Recent researches suggest that starving cancer cells by the use of nontoxic chemical entities can give promising results regarding cancer proliferation. Natural products, especially those of plant origin, offer different chemical scaffolds to target cancer via modulation of multiple cell signaling cascades. Phytonutrients, the secondary metabolites from the plants, constitute edible phytochemicals which are abundantly found in vegetables, whole grains, and fruits. The growing numbers of evidences suggest that phytonutrients exhibit anticancer as well as chemopreventive activities of these bioactive molecules against several cancers by targeting the various significant enzymes of glycolysis, the PPP pathway, TCA cycle, and serine metabolism. This book chapter presents an update for the scientific community about targeting the cancer metabolism by phytonutrients. The alterations in the cancer metabolism in the context of bioenergetics, biosynthesis, and mitochondrial functions have been discussed while presenting the impact of phytonutrients as modulators of potential metabolic effectors in the cancer metabolism. © 2022 Elsevier Inc. All rights reserved.
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    Oleandrin: A bioactive phytochemical and potential cancer killer via multiple cellular signaling pathways
    (Pergamon-Elsevier Science Ltd, 2020) Kanwal, Nazia; Rasul, Azhar; Hussain, Ghulam; Anwar, Haseeb; Shah, Muhammad Ajmal; Sarfraz, Iqra; Riaz, Ammara
    Nerium oleander, a member of family Apocynaceae, is commonly known as Kaner in various countries of Asia and Mediterranean region. This plant has been renowned to possess significant therapeutic potential due to its various bioactive compounds which have been isolated from this plant e.g., cardiac glycosides, oleandrin, a-tocopherol, digitoxingenin, umsolic acid, quercetin, odorosides, and adigoside. Oleandrin, a saponin glycoside is one of the most potent and pharmacologically active phytochemicals of N. oleander. Its remarkable pharmacotherapeutic potential have been interpreted as anticancer, anti-inflammatory, anti-HIV, neuropmtective, antimicrobial and antioxidant. This particular bioactive entity is known to target the multiple deregulated signaling cascades of cancer such as NF-kappa B, MAPK, and PI3K/Akt. The main focus of the current study is to comprehend the action mechanisms of oleandrin against various pathological conditions. The current review is a comprehensive summary to facilitate the researchers to understand the pharmacological position of the oleandrin in the arena of drug discovery, representing this compound as a new drug candidate for further researches. Moreover, in vivo and in silico based studies are required to explore the mechanistic approaches regarding the pharmacokinetics and biosafety profiling of this compound to completely track its candidature status in natural drug discovery.