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Zafeiriadou A, Kollias I, Londra T, Tsaroucha E, Georgoulias V, Kotsakis A, Lianidou E, Markou A. Metabolism-Related Gene Expression in Circulating Tumor Cells from Patients with Early Stage Non-Small Cell Lung Cancer. Cancers (Basel) 2022; 14:cancers14133237. [PMID: 35805008 PMCID: PMC9264894 DOI: 10.3390/cancers14133237] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/23/2022] [Accepted: 06/27/2022] [Indexed: 11/25/2022] Open
Abstract
Simple Summary In the present study, the expression of three Metabolism-Related Enzymes (MRGs) that are related to glucose and pyruvate metabolism, in parallel with glucose and monocarboxylate transporter expression (HK2, MCT1, PHGDH), was studied in CTCs isolated from the peripheral blood of early stage NSCLC patients at different timepoints. The expression levels of all tested MRGs decreased in CTCs one month after surgery, but a significant increase was noticed at the time of relapse for PHGDH and MCT1 only. An overexpression of MRGs was observed at a high frequency in the CTCs isolated from early NSCLC patients, thereby supporting the role of MRGs in metastatic processes. The glycolytic and mesenchymal subpopulation of CTCs was significantly predominant compared to CTCs that wereglycolytic but not mesenchymal-like. Our data indicate that MRGs merit further evaluation through large and well-defined cohort studies. Abstract Purpose: Metabolic reprogramming is now characterized as one of the core hallmarks of cancer, and it has already been shown that the altered genomic profile of metabolically rewired cancer cells can give valuable information. In this study, we quantified three Metabolism-Related Gene (MRG) transcripts in the circulating tumor cells (CTCs) of early stage NSCLC patients and evaluated their associations with epithelial and EMT markers. Experimental Design: We first developed and analytically validated highly sensitive RT-qPCR assays for the quantification of HK2, MCT1 and PHGDH transcripts, and further studied the expression of MRGs in CTCs that were isolated using a size-dependent microfluidic device (Parsortix, Angle) from the peripheral blood of: (a) 46 NSCLC patients at baseline, (b) 39/46 of these patients one month after surgery, (c) 10/46 patients at relapse and (d) 10 pairs of cancerous and adjacent non-cancerous FFPE tissues from the same NSCLC patients. Epithelial and EMT markers were also evaluated. Results: MCT1 and HK2 were differentially expressed between HD and NSCLC patients. An overexpression of MCT1 was detected in 15/46 (32.6%) and 3/10 (30%) patients at baseline and at progression disease (PD), respectively, whereas an overexpression of HK2 was detected in 30.4% and 0% of CTCs in the same group of samples. The expression levels of all tested MRGs decreased in CTCs one month after surgery, but a significant increase was noticed at the time of relapse for PHGDH and MCT1 only. The expression levels of HK2 and MCT1 were associated with the overexpression of mesenchymal markers (TWIST-1 and VIM). Conclusion: An overexpression of MRGs was observed at a high frequency in the CTCs isolated from early NSCLC patients, thereby supporting the role of MRGs in metastatic processes. The glycolytic and mesenchymal subpopulation of CTCs was significantly predominant compared to CTCs that were glycolytic but not mesenchymal-like. Our data indicate that MRGs merit further evaluation through large and well-defined cohort studies.
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Affiliation(s)
- A. Zafeiriadou
- Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece; (A.Z.); (I.K.); (T.L.); (E.L.)
| | - I. Kollias
- Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece; (A.Z.); (I.K.); (T.L.); (E.L.)
| | - T. Londra
- Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece; (A.Z.); (I.K.); (T.L.); (E.L.)
| | - E. Tsaroucha
- ‘Sotiria’ General Hospital for Chest Diseases, 11527 Athens, Greece;
| | - V. Georgoulias
- First Department of Medical Oncology, IASO General Hospital of Athens, 15123 Athens, Greece;
| | - A. Kotsakis
- Department of Medical Oncology, University General Hospital of Larissa, 41334 Larissa, Greece;
| | - E. Lianidou
- Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece; (A.Z.); (I.K.); (T.L.); (E.L.)
| | - A. Markou
- Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece; (A.Z.); (I.K.); (T.L.); (E.L.)
- Correspondence:
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Lee S, Mendoza TR, Burner DN, Muldong MT, Wu CCN, Arreola-Villanueva C, Zuniga A, Greenburg O, Zhu WY, Murtadha J, Koutouan E, Pineda N, Pham H, Kang SG, Kim HT, Pineda G, Lennon KM, Cacalano NA, Jamieson CHM, Kane CJ, Kulidjian AA, Gaasterland T, Jamieson CAM. Novel Dormancy Mechanism of Castration Resistance in Bone Metastatic Prostate Cancer Organoids. Int J Mol Sci 2022; 23:ijms23063203. [PMID: 35328625 PMCID: PMC8952299 DOI: 10.3390/ijms23063203] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/07/2022] [Accepted: 02/17/2022] [Indexed: 12/12/2022] Open
Abstract
Advanced prostate cancer (PCa) patients with bone metastases are treated with androgen pathway directed therapy (APDT). However, this treatment invariably fails and the cancer becomes castration resistant. To elucidate resistance mechanisms and to provide a more predictive pre-clinical research platform reflecting tumor heterogeneity, we established organoids from a patient-derived xenograft (PDX) model of bone metastatic prostate cancer, PCSD1. APDT-resistant PDX-derived organoids (PDOs) emerged when cultured without androgen or with the anti-androgen, enzalutamide. Transcriptomics revealed up-regulation of neurogenic and steroidogenic genes and down-regulation of DNA repair, cell cycle, circadian pathways and the severe acute respiratory syndrome (SARS)-CoV-2 host viral entry factors, ACE2 and TMPRSS2. Time course analysis of the cell cycle in live cells revealed that enzalutamide induced a gradual transition into a reversible dormant state as shown here for the first time at the single cell level in the context of multi-cellular, 3D living organoids using the Fucci2BL fluorescent live cell cycle tracker system. We show here a new mechanism of castration resistance in which enzalutamide induced dormancy and novel basal-luminal-like cells in bone metastatic prostate cancer organoids. These PDX organoids can be used to develop therapies targeting dormant APDT-resistant cells and host factors required for SARS-CoV-2 viral entry.
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MESH Headings
- Androgens/pharmacology
- Angiotensin-Converting Enzyme 2/genetics
- Angiotensin-Converting Enzyme 2/metabolism
- Animals
- Benzamides/pharmacology
- Bone Neoplasms/genetics
- Bone Neoplasms/metabolism
- Bone Neoplasms/secondary
- COVID-19/genetics
- COVID-19/metabolism
- COVID-19/virology
- Drug Resistance, Neoplasm/drug effects
- Drug Resistance, Neoplasm/genetics
- Gene Expression Profiling/methods
- Gene Expression Regulation, Neoplastic/drug effects
- Gene Expression Regulation, Neoplastic/genetics
- Humans
- Male
- Mice
- Nitriles/pharmacology
- Organoids/metabolism
- Phenylthiohydantoin/pharmacology
- Prostatic Neoplasms/genetics
- Prostatic Neoplasms/metabolism
- Prostatic Neoplasms/pathology
- Prostatic Neoplasms, Castration-Resistant/genetics
- Prostatic Neoplasms, Castration-Resistant/metabolism
- Prostatic Neoplasms, Castration-Resistant/pathology
- Receptors, Virus/genetics
- Receptors, Virus/metabolism
- SARS-CoV-2/metabolism
- SARS-CoV-2/physiology
- Serine Endopeptidases/genetics
- Serine Endopeptidases/metabolism
- Transplantation, Heterologous
- Virus Internalization
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Affiliation(s)
- Sanghee Lee
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
- Rady Children’s Hospital, San Diego, CA 92123, USA
| | - Theresa R. Mendoza
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | - Danielle N. Burner
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | - Michelle T. Muldong
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | - Christina C. N. Wu
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA; (G.P.); (K.M.L.)
| | - Catalina Arreola-Villanueva
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | - Abril Zuniga
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | - Olga Greenburg
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | - William Y. Zhu
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | - Jamillah Murtadha
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | - Evodie Koutouan
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | - Naomi Pineda
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | - Hao Pham
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | - Sung-Gu Kang
- Department of Urology, Korea University College of Medicine, Seongbuk-Gu, Seoul 02841, Korea;
| | - Hyun Tae Kim
- Department of Urology, School of Medicine, Kyungpook National University, Daegu 41944, Korea;
| | - Gabriel Pineda
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA; (G.P.); (K.M.L.)
| | - Kathleen M. Lennon
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA; (G.P.); (K.M.L.)
| | - Nicholas A. Cacalano
- Department of Radiation Oncology, University of California, Los Angeles, CA 90095, USA;
| | - Catriona H. M. Jamieson
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
- Department of Urology, Korea University College of Medicine, Seongbuk-Gu, Seoul 02841, Korea;
| | - Christopher J. Kane
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
| | | | - Terry Gaasterland
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093, USA;
- Institute for Genomic Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Christina A. M. Jamieson
- Department of Urology, University of California San Diego, La Jolla, CA 92093, USA; (S.L.); (T.R.M.); (D.N.B.); (M.T.M.); (C.A.-V.); (A.Z.); (O.G.); (W.Y.Z.); (J.M.); (E.K.); (N.P.); (H.P.); (C.J.K.)
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA; (C.C.N.W.); (C.H.M.J.)
- Correspondence: ; Tel.: +1-858-534-2921
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SreedharanNair S, Unni KK, Sasidharanpillai S, Kumar S, Aravindakumar CT, Aravind UK. Bio-physical and Computational Studies on Serum Albumin / Target Protein Binding of a Potential Anti-Cancer Agent. Eur J Pharm Sci 2022; 172:106141. [PMID: 35143979 DOI: 10.1016/j.ejps.2022.106141] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 02/06/2022] [Accepted: 02/06/2022] [Indexed: 11/03/2022]
Abstract
The successful evolution of an effective drug depends on its pharmacokinetics, efficiency and safety and these in turn depend on the drug-target/drug-carrier protein binding. This work, deals with the interaction of a pyridine derivative, 2-hydroxy-5-(4-methoxyphenyl)-6-phenylpyridine 3-carbonitrile (HDN) with serum albumins at physiological conditions utilizing the steady state and time-resolved fluorescence techniques by probing the emission behavior of Trp in BSA and HSA. In-silico studies revealed a combined static and dynamic quenching mechanism for the interactions. The binding studies suggests a spontaneous binding between HDN and the albumins with a moderate binding affinity (Kb ∼ 10-5 M-1) with a single class of binding site. The FRET mediated emission from HDN indicates preferential binding of HDN in subdomain IIA of the albumins with Trp residue in close proximity. Circular dichroism results indicate HDN induced conformational changes for BSA and HSA, but the α-helical secondary structure was well preserved even up to a concentration of 10 µM HDN. Moderate binding affinity of HDN with BSA and HSA and the unaltered secondary structure of proteins on binding propose the potential application of HDN as an efficient drug. The application of docking method on the affinity of HDN towards the proposed target/receptor is discussed.
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Affiliation(s)
- Sreedhanya SreedharanNair
- Inter University Instrumentation Centre, Mahatma Gandhi University, Kottayam 686560, India; N. S. S. College, Pandalam, Pathanamthitta, 689501, India
| | | | | | - Satheesh Kumar
- Government Medical College Kottayam, Arpookara, Kottayam, 686008, Kerala, India
| | | | - Usha K Aravind
- School of Environmental Studies, Cochin University of Science and Technology, Kerala, 686 560, India.
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4
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Helsen C, Nguyen T, Vercruysse T, Wouters S, Daelemans D, Voet A, Claessens F. The T850D Phosphomimetic Mutation in the Androgen Receptor Ligand Binding Domain Enhances Recruitment at Activation Function 2. Int J Mol Sci 2022; 23:ijms23031557. [PMID: 35163481 PMCID: PMC8836279 DOI: 10.3390/ijms23031557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 01/26/2022] [Accepted: 01/27/2022] [Indexed: 02/04/2023] Open
Abstract
Several key functions of the androgen receptor (AR) such as hormone recognition and co-regulator recruitment converge in the ligand binding domain (LBD). Loss- or gain-of-function of the AR contributes to pathologies such as the androgen insensitivity syndrome and prostate cancer. Here, we describe a gain-of-function mutation of the surface-exposed threonine at position 850, located at the amino-terminus of Helix 10 (H10) in the AR LBD. Since T850 phosphorylation was reported to affect AR function, we created the phosphomimetic mutation T850D. The AR T850D variant has a 1.5- to 2-fold increased transcriptional activity with no effect on ligand affinity. In the androgen responsive LNCaP cell line grown in medium with low androgen levels, we observed a growth advantage for cells in which the endogenous AR was replaced by AR T850D. Despite the distance to the AF2 site, the AR T850D LBD displayed an increased affinity for coactivator peptides as well as the 23FQNLF27 motif of AR itself. Molecular Dynamics simulations confirm allosteric transmission of the T850D mutation towards the AF2 site via extended hydrogen bond formation between coactivator peptide and AF2 site. This mechanistic study thus confirms the gain-of-function character of T850D and T850 phosphorylation for AR activity and reveals details of the allosteric communications within the LBD.
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Affiliation(s)
- Christine Helsen
- Laboratory of Molecular Endocrinology, Department of Cellular and Molecular Medicine, KU Leuven, ON I, 3000 Leuven, Belgium;
- Correspondence: ; Tel.: +32-16377388
| | - Tien Nguyen
- Laboratory of Biomolecular Modelling and Design, Department of Chemistry, KU Leuven, Celestijnenlaan 200G, 3001 Leuven, Belgium; (T.N.); (S.W.); (A.V.)
| | - Thomas Vercruysse
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, 3000 Leuven, Belgium; (T.V.); (D.D.)
| | - Staf Wouters
- Laboratory of Biomolecular Modelling and Design, Department of Chemistry, KU Leuven, Celestijnenlaan 200G, 3001 Leuven, Belgium; (T.N.); (S.W.); (A.V.)
| | - Dirk Daelemans
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, 3000 Leuven, Belgium; (T.V.); (D.D.)
| | - Arnout Voet
- Laboratory of Biomolecular Modelling and Design, Department of Chemistry, KU Leuven, Celestijnenlaan 200G, 3001 Leuven, Belgium; (T.N.); (S.W.); (A.V.)
| | - Frank Claessens
- Laboratory of Molecular Endocrinology, Department of Cellular and Molecular Medicine, KU Leuven, ON I, 3000 Leuven, Belgium;
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Han R, Li Y, Chen M, Li W, Ding C, Luo X. Antifouling Electrochemical Biosensor Based on the Designed Functional Peptide and the Electrodeposited Conducting Polymer for CTC Analysis in Human Blood. Anal Chem 2022; 94:2204-2211. [PMID: 35041382 DOI: 10.1021/acs.analchem.1c04787] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Circulating tumor cells (CTCs) are considered reliable cancer biomarkers for the liquid biopsy of many types of tumors. The direct detection of CTCs in human blood with normal biosensors, however, remains challenging because of severe biofouling in blood that contains various proteins and a large number of cells. Herein, we report the construction of an antifouling electrochemical biosensor capable of assaying CTCs directly in blood, based on a designed multifunctional peptide and the electrodeposited conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT). The designed peptide possesses antifouling capability in complex biological media and specific recognition ability to capture breast cancer cells MCF-7. Meanwhile, electrodeposited PEDOT can promote electron transfer at the sensing interface, improve the signal-to-noise ratio for the detection, and thus enhance the sensitivity of the biosensor. The integration of the multifunctional peptide and conducting polymer PEDOT ensures that the developed biosensor is able to perform directly in blood samples without purification or separation. The antifouling electrochemical biosensor for the detection of MCF-7 cells exhibits a wide linear range over 4 orders, with a limit of detection (LOD) of 17 cells mL-1. More interestingly, even when performing in 25% human blood, the biosensor still retains a linear response with an LOD of 22 cells mL-1, without suffering significantly from biofouling in real blood. This work provides a promising strategy for the direct analysis of CTCs in human blood without a complicated pretreatment, and it may find practical application in the liquid biopsy of cancers.
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Affiliation(s)
- Rui Han
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yang Li
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Min Chen
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Wanting Li
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Caifeng Ding
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xiliang Luo
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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Bass AKA, Nageeb ESM, El-Zoghbi MS, Mohamed MFA, Badr M, Abuo-Rahma GEDA. Utilization of cyanopyridine in design and synthesis of first-in-class anticancer dual acting PIM-1 kinase/HDAC inhibitors. Bioorg Chem 2021; 119:105564. [PMID: 34959179 DOI: 10.1016/j.bioorg.2021.105564] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/06/2021] [Accepted: 12/12/2021] [Indexed: 12/14/2022]
Abstract
Herein, we report design and synthesis of twenty-one dual PIM-1/HDAC inhibitors utilizing 3-cyanopyridines as a novel cap moiety linked with aliphatic /aromatic linker bearing carboxylic acid 3a-g, hydroxamic acid 4a-g or 2-aminoanilide moieties 5a-g as zinc-binding group. Most of the target hybrids revealed promising growth inhibition according to one dose NCI protocol against 60 cancer cell lines. Meanwhile, hydroxamic acids 4b, 4d and 4e displayed strong and broad-spectrum activity against nine tumor subpanels tested (GI50 0.176-8.87 μM); 4d displayed strong antiproliferative activity with GI50 ≤ 3 μM against different cancer cell lines (GI50 range from 0.325 to 2.9 μM). Furthermore, 4a, 4d-4g and 5f manifested a high inhibitory activity against HDACs 1 and 6 isozymes; 4g, displayed potent HDAC 1 and 6 inhibitory activity (45.01 ± 2.1 and 19.78 ± 1.1 nM) more than the reference SAHA (51.54 ± 2.4 and 21.38 ± 1.2 nM, respectively), while 4f was more potent (30.09 ± 1.4 nM) than SAHA against HDAC 1 and less potent (30.29 ± 1.7 nM) than SAHA against HDAC 6. Hybrids 4b, 4d, 4e and 4f exhibited potent PIM-1 inhibitory activity; 4d showed comparable activity to quercetin (IC50 of 343.87 ± 16.6 and 353.76 ± 17.1 nM, respectively); it exhibited pre G1 apoptosis and arrest cell cycle at G2/M phase. Moreover, it revealed good binding into pocket of HDACs 1,6 and PIM-1 kinase enzymes with good correlation with biological results. Moreover, 4b, 4d and 4e had reasonable drug-likeness properties according to Lipinski's rule. However, multitarget inhibitor of PIM-1/HDAC is a promising strategy in anticancer drug discovery; the most potent hybrids require further in vivo and clinical investigations.
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Affiliation(s)
- Amr K A Bass
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Menoufia University, Menoufia, Egypt
| | - El-Shimaa M Nageeb
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Mona S El-Zoghbi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Menoufia University, Menoufia, Egypt
| | - Mamdouh F A Mohamed
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Sohag University, 82524 Sohag, Egypt
| | - Mohamed Badr
- Department of Biochemistry, Faculty of Pharmacy, Menoufia University, Menoufia, Egypt
| | - Gamal El-Din A Abuo-Rahma
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia 61519, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Deraya University, New Minia, Minia, Egypt.
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7
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Lin D, Shen L, Luo M, Zhang K, Li J, Yang Q, Zhu F, Zhou D, Zheng S, Chen Y, Zhou J. Circulating tumor cells: biology and clinical significance. Signal Transduct Target Ther 2021; 6:404. [PMID: 34803167 PMCID: PMC8606574 DOI: 10.1038/s41392-021-00817-8] [Citation(s) in RCA: 300] [Impact Index Per Article: 100.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 10/06/2021] [Accepted: 10/27/2021] [Indexed: 02/07/2023] Open
Abstract
Circulating tumor cells (CTCs) are tumor cells that have sloughed off the primary tumor and extravasate into and circulate in the blood. Understanding of the metastatic cascade of CTCs has tremendous potential for the identification of targets against cancer metastasis. Detecting these very rare CTCs among the massive blood cells is challenging. However, emerging technologies for CTCs detection have profoundly contributed to deepening investigation into the biology of CTCs and have facilitated their clinical application. Current technologies for the detection of CTCs are summarized herein, together with their advantages and disadvantages. The detection of CTCs is usually dependent on molecular markers, with the epithelial cell adhesion molecule being the most widely used, although molecular markers vary between different types of cancer. Properties associated with epithelial-to-mesenchymal transition and stemness have been identified in CTCs, indicating their increased metastatic capacity. Only a small proportion of CTCs can survive and eventually initiate metastases, suggesting that an interaction and modulation between CTCs and the hostile blood microenvironment is essential for CTC metastasis. Single-cell sequencing of CTCs has been extensively investigated, and has enabled researchers to reveal the genome and transcriptome of CTCs. Herein, we also review the clinical applications of CTCs, especially for monitoring response to cancer treatment and in evaluating prognosis. Hence, CTCs have and will continue to contribute to providing significant insights into metastatic processes and will open new avenues for useful clinical applications.
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Affiliation(s)
- Danfeng Lin
- Department of Breast Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Department of Breast Surgery, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lesang Shen
- Department of Breast Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Meng Luo
- Department of Breast Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Kun Zhang
- Department of Breast Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jinfan Li
- Department of Pathology, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qi Yang
- Department of Pathology, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Fangfang Zhu
- Department of Breast Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Dan Zhou
- Department of Surgery, Traditional Chinese Medical Hospital of Zhuji, Shaoxing, China
| | - Shu Zheng
- Department of Breast Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yiding Chen
- Department of Breast Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Jiaojiao Zhou
- Department of Breast Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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8
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Casillas AL, Chauhan SS, Toth RK, Sainz AG, Clements AN, Jensen CC, Langlais PR, Miranti CK, Cress AE, Warfel NA. Direct phosphorylation and stabilization of HIF-1α by PIM1 kinase drives angiogenesis in solid tumors. Oncogene 2021; 40:5142-5152. [PMID: 34211090 PMCID: PMC8364516 DOI: 10.1038/s41388-021-01915-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 06/09/2021] [Accepted: 06/17/2021] [Indexed: 12/12/2022]
Abstract
Angiogenesis is essential for the sustained growth of solid tumors. Hypoxia-inducible factor 1 (HIF-1) is a master regulator of angiogenesis and constitutive activation of HIF-1 is frequently observed in human cancers. Therefore, understanding the mechanisms governing the activation of HIF-1 is critical for successful therapeutic targeting of tumor angiogenesis. Herein, we establish a new regulatory mechanism responsible for the constitutive activation of HIF-1α in cancer, irrespective of oxygen tension. PIM1 kinase directly phosphorylates HIF-1α at threonine 455, a previously uncharacterized site within its oxygen-dependent degradation domain. This phosphorylation event disrupts the ability of prolyl hydroxylases to bind and hydroxylate HIF-1α, interrupting its canonical degradation pathway and promoting constitutive transcription of HIF-1 target genes. Moreover, phosphorylation of the analogous site in HIF-2α (S435) stabilizes the protein through the same mechanism, indicating post-translational modification within the oxygen-dependent degradation domain as a mechanism of regulating the HIF-α subunits. In vitro and in vivo models demonstrate that expression of PIM1 is sufficient to stabilize HIF-1α and HIF-2α in normoxia and stimulate angiogenesis in a HIF-1-dependent manner. CRISPR mutants of HIF-1α (Thr455D) promoted increased tumor growth, proliferation, and angiogenesis. Moreover, HIF-1α-T455D xenograft tumors were refractory to the anti-angiogenic and cytotoxic effects of PIM inhibitors. These data identify a new signaling axis responsible for hypoxia-independent activation of HIF-1 and expand our understanding of the tumorigenic role of PIM1 in solid tumors.
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Affiliation(s)
- Andrea L Casillas
- Cancer Biology Graduate Interdisciplinary Program, The University of Arizona, Tucson, AZ, USA
| | | | - Rachel K Toth
- The University of Arizona Cancer Center, Tucson, AZ, USA
| | - Alva G Sainz
- Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Amber N Clements
- Cancer Biology Graduate Interdisciplinary Program, The University of Arizona, Tucson, AZ, USA
| | - Corbin C Jensen
- Cancer Biology Graduate Interdisciplinary Program, The University of Arizona, Tucson, AZ, USA
| | - Paul R Langlais
- Department of Medicine, The University of Arizona, Tucson, AZ, USA
| | - Cindy K Miranti
- The University of Arizona Cancer Center, Tucson, AZ, USA
- Department of Cellular and Molecular Medicine, The University of Arizona, Tucson, AZ, USA
| | - Anne E Cress
- The University of Arizona Cancer Center, Tucson, AZ, USA
- Department of Cellular and Molecular Medicine, The University of Arizona, Tucson, AZ, USA
| | - Noel A Warfel
- The University of Arizona Cancer Center, Tucson, AZ, USA.
- Department of Cellular and Molecular Medicine, The University of Arizona, Tucson, AZ, USA.
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9
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Kanaki Z, Voutsina A, Markou A, Pateras IS, Potaris K, Avgeris M, Makrythanasis P, Athanasiadis EI, Vamvakaris I, Patsea E, Vachlas K, Lianidou E, Georgoulias V, Kotsakis A, Klinakis A. Generation of Non-Small Cell Lung Cancer Patient-Derived Xenografts to Study Intratumor Heterogeneity. Cancers (Basel) 2021; 13:cancers13102446. [PMID: 34070013 PMCID: PMC8157865 DOI: 10.3390/cancers13102446] [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: 04/05/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 12/25/2022] Open
Abstract
Simple Summary It is widely thought that tumors are composed of different subpopulations of cancer cells carrying genetic alterations with some of them being common among all cells while others are unique for each subpopulation. This variable genetic profile of tumor cells is a component of what is collectively described as intratumor heterogeneity (ITH). Surviving the immune system and therapies, and establishing metastases are forces of natural selection that act upon ITH and drive tumor evolution and, eventually, the clinical presentation of patients. The aim of this prospective study was to investigate ITH in early-stage operable non-small cell lung cancer. We directly grafted human tumors in immunosuppressed mice and compared the genetic profile of the tumors grown in mice with that of the original human tumors. We identified clinical factors that affected the ability of human tumors to grow as mouse xenografts. Abstract Recent advances in sequencing technologies have allowed the in-depth molecular study of tumors, even at the single cell level. Sequencing efforts have uncovered a previously unappreciated heterogeneity among tumor cells, which has been postulated to be the driving force of tumor evolution and to facilitate recurrence, metastasis, and drug resistance. In the current study, focused on early-stage operable non-small cell lung cancer, we used tumor growth in patient-derived xenograft (PDX) models in mice as a fast-forward tumor evolution process to investigate the molecular characteristics of tumor cells that grow in mice, as well as the parameters that affect the grafting efficiency. We found that squamous cell carcinomas grafted significantly more efficiently compared with adenocarcinomas. Advanced stage, patient age and primary tumor size were positively correlated with grafting. Additionally, we isolated and characterized circulating tumor cells (CTC) from patients’ peripheral blood and found that the presence of CTCs expressing epithelial-to-mesenchymal (EMT) markers correlated with the grafting potential. Interestingly, exome sequencing of the PDX tumor identified genetic alterations in DNA repair and genome integrity genes that were under-represented in the human primary counterpart. In conclusion, through the generation of a PDX biobank of NSCLC, we identified the clinical and molecular properties of tumors that affected growth in mice.
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Affiliation(s)
- Zoi Kanaki
- Center for Basic Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece; (Z.K.); (A.V.); (P.M.)
| | - Alexandra Voutsina
- Center for Basic Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece; (Z.K.); (A.V.); (P.M.)
| | - Athina Markou
- Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece; (A.M.); (E.L.)
| | - Ioannis S. Pateras
- Department of Histology and Embryology, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece;
| | - Konstantinos Potaris
- Department of Thoracic Surgery, Sotiria Hospital for Chest Diseases, 11527 Athens, Greece; (K.P.); (K.V.)
| | - Margaritis Avgeris
- Laboratory of Clinical Biochemistry–Molecular Diagnostics, Second Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, “P. & A. Kyriakou” Children’s Hospital, 11527 Athens, Greece;
| | - Periklis Makrythanasis
- Center for Basic Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece; (Z.K.); (A.V.); (P.M.)
| | | | - Ioannis Vamvakaris
- Pathology Department, Athens Chest Hospital “Sotiria”, 11527 Athens, Greece;
| | - Eleni Patsea
- Department of Pathology, Metropolitan Hospital, 18547 Cholargos, Greece;
| | - Konstantinos Vachlas
- Department of Thoracic Surgery, Sotiria Hospital for Chest Diseases, 11527 Athens, Greece; (K.P.); (K.V.)
| | - Evi Lianidou
- Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece; (A.M.); (E.L.)
| | | | - Athanasios Kotsakis
- Department of Medical Oncology, General University Hospital of Larissa, 41110 Larissa, Greece;
| | - Apostolos Klinakis
- Center for Basic Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece; (Z.K.); (A.V.); (P.M.)
- Correspondence:
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10
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Ntzifa A, Strati A, Koliou GA, Zagouri F, Pectasides D, Pentheroudakis G, Christodoulou C, Gogas H, Magkou C, Petraki C, Kosmidis P, Aravantinos G, Kotoula V, Fountzilas G, Lianidou E. Androgen Receptor and PIM1 Expression in Tumor Tissue of Patients With Triple-negative Breast Cancer. Cancer Genomics Proteomics 2021; 18:147-156. [PMID: 33608311 DOI: 10.21873/cgp.20249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/11/2021] [Accepted: 01/13/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND/AIM Effective targeted therapies for triple-negative breast cancer (TNBC) are limited. In a subset of TNBC, androgen receptor (AR) plays an important role, while the human proviral integration site for Moloney murine leukemia virus-1 (PIM1) overexpression is also implicated. PIM1 kinases phosphorylate AR, thus regulating its transcriptional activity, regardless of the presence or not of androgens. We evaluated the expression of AR and PIM1 and their prognostic significance in TNBC. MATERIALS AND METHODS AR and PIM1 transcripts were quantified by quantitative reverse transcription polymerase chain reaction in formalin-fixed paraffin-embedded tumor from 141 patients with TNBC. RESULTS AR was expressed in 38.3%, PIM1 in 10.6%, while co-expression of AR and PIM1 was detected in 7/141 cases (5.0%). No prognostic significance of AR or PIM1 was reached for overall or disease-free survival. CONCLUSION Co-expression of AR and PIM1 exists in only in a small percentage of patients with TNBC. The implications of this finding in the therapeutic management of patients with TNBC should be investigated in larger patient cohorts.
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Affiliation(s)
- Aliki Ntzifa
- Analysis of Circulating Tumor Cells Laboratory, Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Athens, Greece
| | - Areti Strati
- Analysis of Circulating Tumor Cells Laboratory, Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Athens, Greece
| | | | - Flora Zagouri
- Department of Clinical Therapeutics, Alexandra Hospital, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
| | - Dimitrios Pectasides
- Oncology Section, Second Department of Internal Medicine, Hippokration Hospital, Athens, Greece
| | - George Pentheroudakis
- Department of Medical Oncology, Medical School, University of Ioannina, Ioannina, Greece.,Society for Study of Clonal Heterogeneity of Neoplasia (EMEKEN), Ioannina, Greece
| | | | - Helen Gogas
- First Department of Medicine, Laiko General Hospital, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
| | | | | | - Paris Kosmidis
- Second Department of Medical Oncology, Hygeia Hospital, Athens, Greece
| | - Gerasimos Aravantinos
- Second Department of Medical Oncology, Agii Anargiri Cancer Hospital, Athens, Greece
| | - Vassiliki Kotoula
- Department of Pathology, Aristotle University of Thessaloniki, School of Health Sciences, Faculty of Medicine, Thessaloniki, Greece.,Laboratory of Molecular Oncology, Hellenic Foundation for Cancer Research/Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - George Fountzilas
- Laboratory of Molecular Oncology, Hellenic Foundation for Cancer Research/Aristotle University of Thessaloniki, Thessaloniki, Greece.,Aristotle University of Thessaloniki, Thessaloniki, Greece.,German Oncology Center, Limassol, Cyprus
| | - Evi Lianidou
- Analysis of Circulating Tumor Cells Laboratory, Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Athens, Greece;
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11
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Ntzifa A, Strati A, Kallergi G, Kotsakis A, Georgoulias V, Lianidou E. Gene expression in circulating tumor cells reveals a dynamic role of EMT and PD-L1 during osimertinib treatment in NSCLC patients. Sci Rep 2021; 11:2313. [PMID: 33504904 PMCID: PMC7840727 DOI: 10.1038/s41598-021-82068-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 12/31/2020] [Indexed: 12/14/2022] Open
Abstract
Liquid biopsy is a tool to unveil resistance mechanisms in NSCLC. We studied changes in gene expression in CTC-enriched fractions of EGFR-mutant NSCLC patients under osimertinib. Peripheral blood from 30 NSCLC patients before, after 1 cycle of osimertinib and at progression of disease (PD) was analyzed by size-based CTC enrichment combined with RT-qPCR for gene expression of epithelial (CK-8, CK-18, CK-19), mesenchymal/EMT (VIM, TWIST-1, AXL), stem cell (ALDH-1) markers, PD-L1 and PIM-1. CTCs were also analyzed by triple immunofluorescence for 45 identical blood samples. Epithelial and stem cell profile (p = 0.043) and mesenchymal/EMT and stem cell profile (p = 0.014) at PD were correlated. There was a strong positive correlation of VIM expression with PIM-1 expression at baseline and increased PD-L1 expression levels at PD. AXL overexpression varied among patients and high levels of PIM-1 transcripts were detected. PD-L1 expression was significantly increased at PD compared to baseline (p = 0.016). The high prevalence of VIM positive CTCs suggest a dynamic role of EMT during osimertinib treatment, while increased expression of PD-L1 at PD suggests a theoretical background for immunotherapy in EGFR-mutant NSCLC patients that develop resistance to osimertinib. This observation merits to be further evaluated in a prospective immunotherapy trial.
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Affiliation(s)
- Aliki Ntzifa
- grid.5216.00000 0001 2155 0800Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece
| | - Areti Strati
- grid.5216.00000 0001 2155 0800Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece
| | - Galatea Kallergi
- grid.11047.330000 0004 0576 5395Division of Genetics, Cell and Developmental Biology, Department of Biology, University of Patras, Patras, Greece
| | - Athanasios Kotsakis
- grid.411299.6Department of Medical Oncology, General University Hospital of Larissa, Larissa, Greece
| | | | - Evi Lianidou
- grid.5216.00000 0001 2155 0800Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece
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