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Nazarovs J, Breikša A, Kleina R, Lejniece S, Voicehovska J, Momekov G. Prognostic value of plasmablastic morphology and p21, p53 and Cyclin D1 expression in myeloma cells: retrospective study of 122 patients with newly diagnosed multiple myeloma. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2022.2041484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Jurijs Nazarovs
- Pathology Centre, Riga East University Hospital, Rīga, Latvia
- Pauls Stradins Clinical University Hospital, Pathology Institute, Rīga, Latvia
- Department of Pathology, Riga Stradins University, Rīga, Latvia
| | - Austra Breikša
- Pathology Centre, Riga East University Hospital, Rīga, Latvia
- Pauls Stradins Clinical University Hospital, Pathology Institute, Rīga, Latvia
- Department of Pathology, University of Latvia, Rīga, Latvia
| | - Regīna Kleina
- Department of Pathology, Riga Stradins University, Rīga, Latvia
| | - Sandra Lejniece
- Department of Internal Diseases, Riga Stradins University, Rīga, Latvia
- Hematology and Chemotherapy Clinic, Riga East University Hospital, Rīga, Latvia
| | - Jūlija Voicehovska
- Department of Internal Diseases, Riga Stradins University, Rīga, Latvia
- Renal Disease and Kidney Replacement Therapy Clinics, Riga East University Hospital, Rīga, Latvia
| | - Georgi Momekov
- Department of Pharmacology, Pharmacotherapy and Toxicology, Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
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Loss of CDKN1A mRNA and Protein Expression Are Independent Predictors of Poor Outcome in Chromophobe Renal Cell Carcinoma Patients. Cancers (Basel) 2020; 12:cancers12020465. [PMID: 32079343 PMCID: PMC7072616 DOI: 10.3390/cancers12020465] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 01/24/2020] [Accepted: 02/13/2020] [Indexed: 01/10/2023] Open
Abstract
Chromophobe renal cell carcinoma (chRCC) patients have good prognosis. Only 5%-10% patients die of metastatic disease after tumorectomy, but tumor progression cannot be predicted by histopathological parameters alone. chRCC are characterized by losses of many chromosomes, whereas gene mutations are rare. In this study, we aim at identifying genes indicating chRCC progression. A bioinformatic approach was used to correlate chromosomal loss and mRNA expression from 15287 genes from The Cancer Genome Atlas (TCGA) database. All genes in TCGA chromophobe renal cancer dataset (KICH) for which a significant correlation between chromosomal loss and mRNA expression was shown, were identified and their associations with outcome was assessed. Genome-wide DNA copy-number alterations were analyzed by Affymetrix OncoScan® CNV FFPE Microarrays in a second cohort of Swiss chRCC. In both cohorts, tumors with loss of chromosomes 2, 6, 10, 13, 17 and 21 had signs of tumor progression. There were 4654 genes located on these chromosomes, and 13 of these genes had reduced mRNA levels, which was associated with poor outcome in chRCC. Decreased CDKN1A expression at mRNA (p = 0.02) and protein levels (p = 0.02) were associated with short overall survival and were independent predictors of prognosis (p <0.01 and <0.05 respectively). CDKN1A expression status is a prognostic biomarker independent of tumor stage. CDKN1A immunohistochemistry may be used to identify chRCC patients at greater risk of disease progression.
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Al Bitar S, Gali-Muhtasib H. The Role of the Cyclin Dependent Kinase Inhibitor p21 cip1/waf1 in Targeting Cancer: Molecular Mechanisms and Novel Therapeutics. Cancers (Basel) 2019; 11:cancers11101475. [PMID: 31575057 PMCID: PMC6826572 DOI: 10.3390/cancers11101475] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/26/2019] [Accepted: 07/30/2019] [Indexed: 12/15/2022] Open
Abstract
p21cip1/waf1 mediates various biological activities by sensing and responding to multiple stimuli, via p53-dependent and independent pathways. p21 is known to act as a tumor suppressor mainly by inhibiting cell cycle progression and allowing DNA repair. Significant advances have been made in elucidating the potential role of p21 in promoting tumorigenesis. Here, we discuss the involvement of p21 in multiple signaling pathways, its dual role in cancer, and the importance of understanding its paradoxical functions for effectively designing therapeutic strategies that could selectively inhibit its oncogenic activities, override resistance to therapy and yet preserve its tumor suppressive functions.
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Affiliation(s)
- Samar Al Bitar
- Department of Biology, and Center for Drug Discovery, American University of Beirut, Beirut 1103, Lebanon.
| | - Hala Gali-Muhtasib
- Department of Biology, and Center for Drug Discovery, American University of Beirut, Beirut 1103, Lebanon.
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Liu X, Yu H, Cai H, Wang Y. Expression of CD24, p21, p53, and c-myc in alpha-fetoprotein-producing gastric cancer: Correlation with clinicopathologic characteristics and survival. J Surg Oncol 2014; 109:859-64. [PMID: 24619835 DOI: 10.1002/jso.23599] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Accepted: 02/10/2014] [Indexed: 01/30/2023]
Abstract
BACKGROUND AND OBJECTIVE The aim of this study was to evaluate the expression of CD24, p21, p53, and c-myc in lesions of patients with Alpha-Fetoprotein (AFP)-producing gastric cancer and their correlation with clinicopathological features and prognosis. METHODS One hundred and four patients with AFP-producing gastric cancer were included into this study. The levels of CD24, p21, p53, and c-myc were examined by immunohistochemistry.The prognostic value of these biological markers and the correlation between biological markers and clinicopathological factors were investigated. RESULTS The percentages of positive expression of CD24, p21, p53, and c-myc were 31.7%, 77.9%, 75.0%, and 66.3%, respectively. CD24 expression correlated with histological grade (P = 0.045) and Lauren type (P = 0.006); p21expression with Borrmann type (P = 0.035); c-myc expression with Borrmann type (P = 0.029). p21 expression was related with poor survival in univariate analysis (P = 0.016). Multivariate analysis showed that p21 expression, vascular invasion, and pathological stage were defined as independent prognostic factors. CONCLUSION The expression of p21 was an independent prognostic factor for patients with AFP-producing gastric cancer.
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Affiliation(s)
- Xiaowen Liu
- Department of Gastric Cancer and Soft Tissue Sarcoma, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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Sarasquete ME, Martínez-López J, Chillón MC, Alcoceba M, Corchete LA, Paiva B, Puig N, Sebastián E, Jiménez C, Mateos MV, Oriol A, Rosiñol L, Palomera L, Teruel AI, González Y, Lahuerta JJ, Bladé J, Gutiérrez NC, Fernández-Redondo E, González M, San Miguel JF, García-Sanz R. Evaluating gene expression profiling by quantitative polymerase chain reaction to develop a clinically feasible test for outcome prediction in multiple myeloma. Br J Haematol 2013; 163:223-34. [PMID: 23952215 DOI: 10.1111/bjh.12519] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 07/05/2013] [Indexed: 11/30/2022]
Abstract
The gene expression profiles (GEPs) of 96 selected genes were analysed by real-time quantitative polymerase chain reaction (qPCR) with a TaqMan low-density array card in isolated tumour plasma cells (PCs) from 157 newly diagnosed multiple myeloma (MM) patients. This qPCR-based GEP correctly classified cases following the Translocation-cyclin D classification. Classic prognostic parameters and qPCR-based GEP predicted MM patient outcome and, although multivariate analyses revealed that cytogenetic risk (standard vs. high risk) was the variable that most strongly predicted prognosis, GEP added significant information for risk stratification. Considering only the standard risk cytogenetic patients, multivariate analyses revealed that high β2-microglobulin, low CDKN1A and high SLC19A1 gene expression levels independently predicted a short time-to-progression (TTP), while high International Staging System stage, low CDKN2B and high TBRG4 gene expression predicted poor overall survival (OS). A gene expression risk score enabled the division of standard risk patients into two groups with different TTPs (83% vs. 38% at 3 years, P < 0·0001) and OS rates (88% vs. 61% at 5 years; P = 0·003). This study demonstrates that quantitative PCR is a robust, accurate and feasible technique for implementing in the daily routine as a surrogate for GEP-arrays.
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Affiliation(s)
- María E Sarasquete
- Servicio de Hematología, Hospital Universitario de Salamanca e Instituto Biosanitario de Salamanca (IBSAL), Universidad de Salamanca, Salamanca, Spain; Centro de Investigación del Cáncer de Salamanca, Salamanca, Spain
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Liu J, Hu Y, Hu W, Xie X, Ela Bella A, Fu J, Rao D. Expression and prognostic relevance of p21WAF1 in stage III esophageal squamous cell carcinoma. Dis Esophagus 2012; 25:67-71. [PMID: 21689205 DOI: 10.1111/j.1442-2050.2011.01217.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The prognostic effect of p21(WAF1) expression on esophageal squamous cell carcinoma patients is controversial. Further clarifying the effect of this protein is beneficial for optimizing the patient outcomes. In the current study, we investigated the expression of p21(WAF1) protein in 189 specimens of stage III ESCC by immunohistochemistry. As shown by the Kaplan-Meier curve, the overall survival rate of the positive-expression group was significantly higher than that of the negative-expression group (P < 0.05). No significant correlation was observed between p21(WAF1) expression and clinicopathological parameters in terms of gender, age, tumor location, tumor grade, pathological stage, and number of regional lymph node metastases (P > 0.05). We concluded that p21(WAF1) played an intricate role in the tumorigenesis and development of ESCC. p21(WAF1) could serve as a positive prognostic predictor for stage III ESCC patients.
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Affiliation(s)
- J Liu
- Department of Thoracic Oncology, Cancer Center, Sun Yat-sen University, Guangzhou, China
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Huang HS, Liu ZM, Hong DY. Blockage of JNK pathway enhances arsenic trioxide-induced apoptosis in human keratinocytes. Toxicol Appl Pharmacol 2010; 244:234-41. [PMID: 20074581 DOI: 10.1016/j.taap.2009.12.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Revised: 12/25/2009] [Accepted: 12/30/2009] [Indexed: 12/12/2022]
Abstract
Arsenic is well known as a carcinogen predisposing humans to some severe diseases and also as an effective medicine for treating acute promyelocytic leukemia, syphilis, and psoriasis. Multiple active mechanisms, including cell cycle arrest and apoptosis, have been proposed in therapy; however, the opposing effects of arsenic remain controversial. Our previous study found that arsenic trioxide (ATO)-induced activation of p21(WAF1/CIP1) (p21) led to A431 cell death through the antagonistic effects of the signaling of ERK1/2 and JNK1. In the current study, the inhibitory effects of JNK1 on ATO-induced p21 expression were explored. Over-expression of JNK1 in A431 cells could inhibit p21 expression, which was associated with HDAC1 and TGIF. Using the GST pull-down assay and fluorescence resonance energy transfer analysis, N-terminal domain (amino acids 1-108) of TGIF, critical to its binding with c-Jun, was found. Using reporter assays, requirement of the C-terminal domain (amino acids 138-272) of TGIF to suppress ATO-induced p21 expression was observed. Thus, the domains of TGIF that carried out its inhibitory effects on p21 were identified. Finally, treatment with JNK inhibitor SP600125 could enhance ATO-induced apoptosis of HaCaT keratinocytes by using flow cytometry.
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Affiliation(s)
- Huei-Sheng Huang
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan.
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Li MY, Hsin MKY, Yip J, Mok TSK, Underwood MJ, Chen GG. PPARγ Activation Extinguishes Smoking Carcinogen by Inhibiting NNK-Mediated Proliferation. Am J Respir Cell Mol Biol 2010; 42:113-22. [DOI: 10.1165/rcmb.2008-0463oc] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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Coley W, Kehn-Hall K, Van Duyne R, Kashanchi F. Novel HIV-1 therapeutics through targeting altered host cell pathways. Expert Opin Biol Ther 2009; 9:1369-82. [PMID: 19732026 DOI: 10.1517/14712590903257781] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The emergence of drug-resistant HIV-1 strains presents a challenge for the design of new drugs. Anti-HIV compounds currently in use are the subject of advanced clinical trials using either HIV-1 reverse transcriptase, viral protease or integrase inhibitors. Recent studies show an increase in the number of HIV-1 variants resistant to anti-retroviral agents in newly infected individuals. Targeting host cell factors involved in the regulation of HIV-1 replication might be one way to combat HIV-1 resistance to the currently available anti-viral agents. A specific inhibition of HIV-1 gene expression could be expected from the development of compounds targeting host cell factors that participate in the activation of the HIV-1 LTR promoter. Here we discuss how targeting the host can be accomplished either by using small molecules to alter the function of the host's proteins such as p53 or cdk9, or by utilizing new advances in siRNA therapies to knock down essential host factors such as CCR5 and CXCR4. Finally, we will discuss how the viral protein interactomes should be used to better design therapeutics against HIV-1.
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Affiliation(s)
- William Coley
- George Washington University, School of Medicine, Department of Microbiology, Immunology and Tropical Medicine, Washington, DC 20037, USA
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Guendel I, Carpio L, Easley R, Van Duyne R, Coley W, Agbottah E, Dowd C, Kashanchi F, Kehn-Hall K. 9-Aminoacridine inhibition of HIV-1 Tat dependent transcription. Virol J 2009; 6:114. [PMID: 19630958 PMCID: PMC2723079 DOI: 10.1186/1743-422x-6-114] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Accepted: 07/24/2009] [Indexed: 11/30/2022] Open
Abstract
As part of a continued search for more efficient anti-HIV-1 drugs, we are focusing on the possibility that small molecules could efficiently inhibit HIV-1 replication through the restoration of p53 and p21WAF1 functions, which are inactivated by HIV-1 infection. Here we describe the molecular mechanism of 9-aminoacridine (9AA) mediated HIV-1 inhibition. 9AA treatment resulted in inhibition of HIV LTR transcription in a specific manner that was highly dependent on the presence and location of the amino moiety. Importantly, virus replication was found to be inhibited in HIV-1 infected cell lines by 9AA in a dose-dependent manner without inhibiting cellular proliferation or inducing cell death. 9AA inhibited viral replication in both p53 wildtype and p53 mutant cells, indicating that there is another p53 independent factor that was critical for HIV inhibition. p21WAF1 is an ideal candidate as p21WAF1 levels were increased in both p53 wildtype and p53 mutant cells, and p21WAF1 was found to be phosphorylated at S146, an event previously shown to increase its stability. Furthermore, we observed p21WAF1 in complex with cyclin T1 and cdk9 in vitro, suggesting a direct role of p21WAF1 in HIV transcription inhibition. Finally, 9AA treatment resulted in loss of cdk9 from the viral promoter, providing one possible mechanism of transcriptional inhibition. Thus, 9AA treatment was highly efficient at reactivating the p53 – p21WAF1 pathway and consequently inhibiting HIV replication and transcription.
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Affiliation(s)
- Irene Guendel
- Department of Microbiology, Immunology, and Tropical Medicine, The George Washington University, Washington, DC 20037,
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Frolova N, Edmonds MD, Bodenstine TM, Seitz R, Johnson MR, Feng R, Welch DR, Frost AR. A shift from nuclear to cytoplasmic breast cancer metastasis suppressor 1 expression is associated with highly proliferative estrogen receptor-negative breast cancers. Tumour Biol 2009; 30:148-59. [PMID: 19609101 DOI: 10.1159/000228908] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2009] [Accepted: 05/25/2009] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND/AIMS To determine breast cancer metastasis suppressor 1 (BRMS1) expression in breast cancers and the efficacy of BRMS1 as a prognostic indicator, BRMS1 expression was assessed in two sets of breast cancer tissues. METHODS Epithelial cells from 36 frozen samples of breast cancers and corresponding normal breast were collected by laser capture microdissection and assessed for BRMS1 by quantitative RT-PCR and immunohistochemistry. BRMS1 was also evaluated by immunohistochemistry in a tissue microarray of 209 breast cancers and correlated with indicators of prognosis [estrogen receptor (ER), progesterone receptor (PR), ErbB2, p53, p27(Kip1), Bcl2 and Ki-67]. RESULTS BRMS1 mRNA and protein were higher in 94 and 81%, respectively, of breast cancers than in corresponding normal epithelium. BRMS1 localization was predominantly nuclear, but 60-70% of cancers also exhibited cytoplasmic immunostaining. Breast cancers with lower nuclear than cytoplasmic BRMS1 (nuclear score - cytoplasmic score < or =0; 11% of cancers) had lower ER, lower PR and higher Ki-67 expression. There was also a trend toward poorer overall survival in this group of cancers, but this was only of borderline significance (p = 0.073). In Cox proportional hazards models, loss of nuclear BRMS1 was not a significant predictor of overall survival. CONCLUSIONS Loss of nuclear BRMS1 was associated with ER-negative cancers and a high rate of proliferation, but was not an independent indicator of prognosis.
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Affiliation(s)
- Natalya Frolova
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Abstract
One of the main engines that drives cellular transformation is the loss of proper control of the mammalian cell cycle. The cyclin-dependent kinase inhibitor p21 (also known as p21WAF1/Cip1) promotes cell cycle arrest in response to many stimuli. It is well positioned to function as both a sensor and an effector of multiple anti-proliferative signals. This Review focuses on recent advances in our understanding of the regulation of p21 and its biological functions with emphasis on its p53-independent tumour suppressor activities and paradoxical tumour-promoting activities, and their implications in cancer.
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Affiliation(s)
- Tarek Abbas
- Department of Biochemistry and Molecular Genetics, University of Virginia, School of Medicine, 1340 Jefferson Park Avenue, Charlottesville, VA 22908, USA.
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