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Zia S, Tehreem K, Batool S, Ishfaq M, Mirza SB, Khan S, Almashjary MN, Hazzazi MS, Qanash H, Shaikh A, Baty RS, Jafri I, Alsubhi NH, Alrefaei GI, Sami R, Shahid R. Epithelial Cell Adhesion Molecule ( EpCAM) Expression Can Be Modulated via NFκB. Biomedicines 2022; 10:biomedicines10112985. [PMID: 36428553 PMCID: PMC9687693 DOI: 10.3390/biomedicines10112985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/15/2022] [Accepted: 11/17/2022] [Indexed: 11/22/2022] Open
Abstract
The epithelial cell adhesion molecule (EpCAM) is considered an essential proliferation signature in cancer. In the current research study, qPCR induced expression of EpCAM was noted in acute lymphoblastic leukemia (ALL) cases. Costunolide, a sesquiterpene lactone found in crepe ginger and lettuce, is a medicinal herb with anticancer properties. Expression of EpCAM and its downstream target genes (Myc and TERT) wasdownregulated upon treatment with costunolide in Jurkat cells. A significant change in the telomere length of Jurkat cells was not noted at 72 h of costunolide treatment. An in silico study revealed hydrophobic interactions between EpCAM extracellular domain and Myc bHLH with costunolide. Reduced expression of NFκB, a transcription factor of EpCAM, Myc, and TERT in costunolide-treated Jurkat cells, suggested that costunolide inhibits gene expression by targeting NFκB and its downstream targets. Overall, the study proposes that costunolide could be a promising therapeutic biomolecule for leukemia.
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Affiliation(s)
- Saadiya Zia
- Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad 45550, Pakistan
- Department of Biochemistry, Faculty of Sciences, University of Agriculture Faisalabad, Faisalabad 38000, Pakistan
| | - Komal Tehreem
- Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad 45550, Pakistan
| | - Sidra Batool
- Research School of Chemistry, Australian National University, Canberra, ACT 2600, Australia
| | - Mehreen Ishfaq
- Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad 45550, Pakistan
| | - Shaher Bano Mirza
- Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad 45550, Pakistan
| | - Shahrukh Khan
- Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad 45550, Pakistan
| | - Majed N. Almashjary
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdul Aziz University, Jeddah 22254, Saudi Arabia
- Hematology Research Unit, King Fahd Medical Research Center, King Abdul Aziz University, Jeddah 22254, Saudi Arabia
| | - Mohannad S. Hazzazi
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdul Aziz University, Jeddah 22254, Saudi Arabia
- Hematology Research Unit, King Fahd Medical Research Center, King Abdul Aziz University, Jeddah 22254, Saudi Arabia
| | - Husam Qanash
- Department of Medical Laboratory Science, College of Applied Medical Sciences, University of Ha’il, Hail 55476, Saudi Arabia
- Molecular Diagnostics and Personalized Therapeutics Unit, University of Ha’il, Hail 55476, Saudi Arabia
| | - Ahmad Shaikh
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, P.O. Box 960, Abha 61421, Saudi Arabia
| | - Roua S. Baty
- Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Ibrahim Jafri
- Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Nouf H. Alsubhi
- Biological Sciences Department, College of Science and Arts, King Abdul Aziz University, Rabigh 21911, Saudi Arabia
| | - Ghadeer I. Alrefaei
- Department of Biology, College of Science, University of Jeddah, P.O. Box 80327, Jeddah 21589, Saudi Arabia
| | - Rokayya Sami
- Department of Food Science and Nutrition, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Ramla Shahid
- Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad 45550, Pakistan
- Correspondence:
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Chen SH, Bell DR. Evolution of Thyroglobulin Loop Kinetics in EpCAM. Life (Basel) 2021; 11:life11090915. [PMID: 34575064 PMCID: PMC8467770 DOI: 10.3390/life11090915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 08/31/2021] [Accepted: 09/02/2021] [Indexed: 11/16/2022] Open
Abstract
Epithelial cell-activating molecule (EpCAM) is an important cancer biomarker and therapeutic target given its elevated expression in epithelial cancers. EpCAM is a type I transmembrane protein that forms cis-dimers along the thyroglobulin type-1A-like domain (TYD) in the extracellular region. The thyroglobulin loop (TY loop) within the TYD is structurally dynamic in the monomer state of human EpCAM, binding reversibly to a TYD site. However, it is not known if this flexibility is prevalent across different species. Here, we conduct over 17 μs of all-atom molecular dynamics simulations to study EpCAM TY loop kinetics of five different species, including human, mouse, chicken, frog, and fish. We find that the TY loop remains dynamic across evolution. In addition to the TYD binding site, we discover a second binding site for the TY loop in the C-terminal domain (CTD). Calculations of the dissociation rate constants from the simulation trajectories suggest a differential binding pattern of fish EpCAM and other organisms. Whereas fish TY loop has comparable binding for both TYD and CTD sites, the TY loops of other species preferably bind the TYD site. A hybrid construct of fish EpCAM with human TY loop restores the TYD binding preference, suggesting robust effects of the TY loop sequence on its dynamic behavior. Our findings provide insights into the structural dynamics of EpCAM and its implication in physiological functions.
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Affiliation(s)
- Serena H. Chen
- Oak Ridge National Laboratory, Computational Sciences and Engineering Division, Oak Ridge, TN 37830, USA
- Correspondence: (S.H.C.); (D.R.B.)
| | - David R. Bell
- Advanced Biomedical Computational Science, Frederick National Laboratory for Cancer Research, Frederick, MD 21701, USA
- Correspondence: (S.H.C.); (D.R.B.)
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