Browsing by Author "Sethi, Gautam"

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    Application of curcumin nanoformulations to target folic acid receptor in cancer: Recent trends and advances
    (Academic Press Inc., 2023-06-20T00:00:00) Hussain, Arif; Kumar, Ajay; Uttam, Vivek; Sharma, Uttam; Sak, Katrin; Saini, Reena V.; Saini, Adesh K.; Haque, Shafiul; Tuli, Hardeep Singh; Jain, Aklank; Sethi, Gautam
    Curcumin, derived from turmeric, has a strong anticancer potential known for millennia. The development of this phytochemical as a medicine has been hampered by several significant deficiencies, including its poor water solubility and low bioavailability. This review article discusses possibilities to overcome these bottlenecks by focusing on this natural polyphenol's nanoformulation. Moreover, preparation of curcumin conjugates containing folates as ligands for folic acid receptors can add a new important dimension in this field, allowing specific targeting of cancer cells, considering the significantly higher expression of these receptors in malignant tissues compared to normal cells. It is highly expected that simultaneous improvement of different aspects of curcumin in fighting against such a complex and multifaceted disease like cancer. Therefore, we can better comprehend cancer biology by developing a mechanistic understanding of curcumin, which will also inspire the scientific community to develop new pharmacological models, and exploration of emerging directions to revitalize application of natural products in cancer therapy. � 2023 Elsevier Inc.
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    Molecular mechanisms behind ROS regulation in cancer: A balancing act between augmented tumorigenesis and cell apoptosis
    (Springer Science and Business Media Deutschland GmbH, 2022-11-28T00:00:00) Tuli, Hardeep Singh; Kaur, Jagjit; Vashishth, Kanupriya; Sak, Katrin; Sharma, Ujjawal; Choudhary, Renuka; Behl, Tapan; Singh, Tejveer; Sharma, Sheetu; Saini, Adesh K.; Dhama, Kuldeep; Varol, Mehmet; Sethi, Gautam
    ROS include hydroxyl radicals (HO.), superoxide (O2.), and hydrogen peroxide (H2O2). ROS are typically produced under physiological conditions and play crucial roles in living organisms. It is known that ROS, which are created spontaneously by cells through aerobic metabolism in mitochondria, can have either a beneficial or detrimental influence on biological systems. Moderate levels of ROS can cause oxidative damage to proteins, DNA and lipids, which can aid in the pathogenesis of many disorders, including cancer. However, excessive concentrations of ROS can initiate programmed cell death in cancer. Presently, a variety of chemotherapeutic drugs and herbal agents are being investigated to induce ROS-mediated cell death in cancer. Therefore, preserving ROS homeostasis is essential for ensuring normal cell development and survival. On account of a significant association of ROS levels at various concentrations with carcinogenesis in a number of malignancies, further studies are needed to determine the underlying molecular mechanisms and develop the possibilities for intervening in these processes. � 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
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    Natural flavonoids exhibit potent anticancer activity by targeting microRNAs in cancer: A signature step hinting towards clinical perfection
    (Neoplasia Press, Inc., 2022-12-05T00:00:00) Tuli, Hardeep Singh; Garg, Vivek Kumar; Bhushan, Sakshi; Uttam, Vivek; Sharma, Uttam; Jain, Aklank; Sak, Katrin; Yadav, Vikas; Lorenzo, Jose M.; Dhama, Kuldeep; Behl, Tapan; Sethi, Gautam
    Cancer prevalence and its rate of incidence are constantly rising since the past few decades. Owing to the toxicity of present-day antineoplastic drugs, it is imperative to explore safer and more effective molecules to combat and/or prevent this dreaded disease. Flavonoids, a class of polyphenols, have exhibited multifaceted implications against several diseases including cancer, without showing significant toxicity towards the normal cells. Shredded pieces of evidence suggest that flavonoids can enhance drug sensitivity and suppress proliferation, metastasis, and angiogenesis of cancer cells by modulating several oncogenic or oncosuppressor microRNAs (miRNAs, miRs). They play pivotal roles in regulation of various biological and pathological processes, including various cancers. In the present review, the structure, chemistry and miR targeting efficacy of quercetin, luteolin, silibinin, genistein, epigallocatechin gallate, and cyanidin against several cancer types are comprehensively discussed. miRs are considered as next-generation medicine of recent times, and their targeting by naturally occurring flavonoids in cancer cells could be deemed as a signature step. We anticipate that our compilations related to miRNA-mediated regulation of cancer cells by flavonoids might catapult the clinical investigations and affirmation in the future. � 2022