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Hasan A, Mohammed Y, Basiony M, Hanbazazh M, Samman A, Abdelaleem MF, Nasr M, Abozeid H, Mohamed HI, Faisal M, Mohamed E, Ashmawy D, Tharwat M, Morsi DF, Farag AS, Ahmed EM, Aly NM, Abdel-Hamied HE, Salama DEA, Mandour E. Clinico-Pathological Features and Immunohistochemical Comparison of p16, p53, and Ki-67 Expression in Muscle-Invasive and Non-Muscle-Invasive Conventional Urothelial Bladder Carcinoma. Clin Pract 2023; 13:806-819. [PMID: 37489422 PMCID: PMC10366752 DOI: 10.3390/clinpract13040073] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 07/02/2023] [Accepted: 07/05/2023] [Indexed: 07/26/2023] Open
Abstract
INTRODUCTION The identification of bladder detrusor muscle invasion in urothelial cancer is essential for prognosis and management. We studied the clinical, histological, and immunohistochemical expression of p16, p53, and Ki-67 in urothelial detrusor muscle-invasive bladder cancer (MIBC) and urothelial non-detrusor muscle-invasive bladder cancer (NMIBC) in Egyptian patients. METHODS Sixty-two bladder urothelial cancer cases obtained through TURBT were included and divided into two groups: (MIBC, stage T2) and NMIBC (T1). Tissue blocks were recut and re-examined microscopically; then, the immunostaining of p16, p53, and Ki-67 was performed to compare both groups and evaluate the 13% cut-off for Ki-67, 20% for p53, and p16 intensity in various conditions aided by telepathology technology. RESULTS AND CONCLUSION Hematuria was the main clinical first presentation, with no significant difference between either group. The mean age was 61.6 years, with male predominance (52 males and 10 females). The absence of papillary histological pattern was associated with a higher stage, including detrusor muscle invasion (p = 0.000). The overall average percent of p53 immunostaining was 12.9%, revealing no significant difference between MIBC and NMIBC when a cut-off of 20% was implicated. The Ki-67 expression was correlated with higher grade and muscle invasion; however, no association was found with the other two markers' expression. The negative immunostaining of p16 was associated with low grade and NMIBC in the case of the preservation of the papillary pattern. We recommend further studies on the cut-off of widely used markers and more immunohistochemical and genetic studies on the p16(INK4A), taking into consideration the histological pattern of conventional carcinomas.
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Affiliation(s)
- Abdulkarim Hasan
- Pathology Department, Faculty of Medicine, Al-Azhar University, Cairo 11884, Egypt
| | - Yasien Mohammed
- Pathology Department, Faculty of Medicine, Al-Azhar University, Cairo 11884, Egypt
| | - Mostafa Basiony
- Pathology Department, Faculty of Medicine, Al-Azhar University, Cairo 11884, Egypt
| | - Mehenaz Hanbazazh
- Pathology Department, Faculty of Medicine, University of Jeddah, Jeddah 23218, Saudi Arabia
| | - Abdulhadi Samman
- Pathology Department, Faculty of Medicine, University of Jeddah, Jeddah 23218, Saudi Arabia
| | - Mohamed Fayek Abdelaleem
- Preventive Medicine, Ministry of Health, Cairo 11516, Egypt
- Medixia Global LLC, Sharjah 32223, United Arab Emirates
| | - Mohamed Nasr
- Histology Department, Faculty of Medicine, Al-Azhar University, Cairo 11884, Egypt
| | - Hesham Abozeid
- Urology Department, Faculty of Medicine, Al-Azhar University, Cairo 11884, Egypt
| | | | - Mahmoud Faisal
- Urology Department, Faculty of Medicine, Al-Azhar University, Cairo 11884, Egypt
- Urology Department, King Abdullah Medical City, Makkah 24246, Saudi Arabia
| | - Eslam Mohamed
- Clinical Oncology Department, Faculty of Medicine, Al-Azhar University, Cairo 11884, Egypt
| | - Diaa Ashmawy
- Pathology Department, Faculty of Medicine, Al-Azhar University, Damietta 34517, Egypt
| | - Mohamed Tharwat
- Pathology Department, Faculty of Medicine, Al-Azhar University, Assiut 71524, Egypt
| | - Deaa Fekri Morsi
- Pathology Department, Faculty of Medicine, Helwan University, Helwan 11795, Egypt
| | - Abeer Said Farag
- Pathology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo 11884, Egypt
| | - Eman Mohamed Ahmed
- Pathology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo 11884, Egypt
| | - Noha M Aly
- Pathology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo 11884, Egypt
| | - Hala E Abdel-Hamied
- Pathology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo 11884, Egypt
| | - Doaa E A Salama
- Pathology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo 11884, Egypt
- Pathology Department, School of Medicine, Badr University in Cairo (BUC), Cairo 11829, Egypt
| | - Essam Mandour
- Pathology Department, School of Medicine, Badr University in Cairo (BUC), Cairo 11829, Egypt
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Chantre-Justino M, Gonçalves da Veiga Pires I, Cardoso Figueiredo M, Dos Santos Moreira A, Alves G, Faria Ornellas MH. Genetic and methylation status of CDKN2A (p14 ARF/p16 INK4A) and TP53 genes in recurrent respiratory papillomatosis. Hum Pathol 2021; 119:94-104. [PMID: 34826422 DOI: 10.1016/j.humpath.2021.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 12/21/2022]
Abstract
Recurrent respiratory papillomatosis (RRP) is a rare and chronic disease affecting the upper airway with papillomatous lesions caused by the human papillomavirus (HPV) infection, especially HPV-6 and/or HPV-11 types. Little is known about the genetic and epigenetic drivers in RRP pathophysiology. For this purpose, we analyzed 27 papillomatous lesions from patients with RRP to evaluate somatic mutations and methylation status in CDKN2A (p14ARF/p16INK4A) and TP53, which are key tumor suppressor genes for the cell cycle control. Sanger sequencing analysis revealed one somatic mutation in TP53 (c.733_734insA) and four mutations in CDKN2A (c.-30G > T, c.29_30insA, c.69delT, and c.300C > A). These mutations were observed in 10 patients, 6 of which carried double mutation. Furthermore, 50% (5/10) of these patients carrying somatic mutations had RRP severity, representing 62.5% (5/8) of the severity cases in this study, albeit no significant association was found between somatic mutations and disease severity. Methylation-specific polymerase chain reaction assays revealed p14ARF promoter hypermethylation in 100% of cases, followed by TP53 (96.3%) and p16INK4A (55.6%), suggesting the influence of HPV in the DNA methylation machinery. In conclusion, somatic mutations were not common events identified in patients with RRP. However, epigenetic modulation by high methylation rates, particularly for the p14ARF/TP53 pathway, seems to be in the course of RRP development.
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Affiliation(s)
- Mariana Chantre-Justino
- Circulating Biomarkers Laboratory, Pathology Department, Faculty of Medical Sciences, Rio de Janeiro State University, Rio de Janeiro 20550-170, Brazil.
| | - Ingrid Gonçalves da Veiga Pires
- Circulating Biomarkers Laboratory, Pathology Department, Faculty of Medical Sciences, Rio de Janeiro State University, Rio de Janeiro 20550-170, Brazil
| | - Marcelo Cardoso Figueiredo
- Respiratory Endoscopy and Head and Neck Surgery Service at Hospital Federal de Bonsucesso, Rio de Janeiro 21041-030, Brazil
| | - Aline Dos Santos Moreira
- Laboratory of Functional Genomics and Bioinformatics, PTDIS/FIOCRUZ, Rio de Janeiro 21040-900, Brazil
| | - Gilda Alves
- Circulating Biomarkers Laboratory, Pathology Department, Faculty of Medical Sciences, Rio de Janeiro State University, Rio de Janeiro 20550-170, Brazil
| | - Maria Helena Faria Ornellas
- Circulating Biomarkers Laboratory, Pathology Department, Faculty of Medical Sciences, Rio de Janeiro State University, Rio de Janeiro 20550-170, Brazil
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Maity P, Singh K, Krug L, Koroma A, Hainzl A, Bloch W, Kochanek S, Wlaschek M, Schorpp-Kistner M, Angel P, Ignatius A, Geiger H, Scharffetter-Kochanek K. Persistent JunB activation in fibroblasts disrupts stem cell niche interactions enforcing skin aging. Cell Rep 2021; 36:109634. [PMID: 34469740 DOI: 10.1016/j.celrep.2021.109634] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 06/15/2021] [Accepted: 08/09/2021] [Indexed: 01/02/2023] Open
Abstract
Fibroblasts residing in the connective tissues constitute the stem cell niche, particularly in organs such as skin. Although the effect of fibroblasts on stem cell niches and organ aging is an emerging concept, the underlying mechanisms are largely unresolved. We report a mechanism of redox-dependent activation of transcription factor JunB, which, through concomitant upregulation of p16INK4A and repression of insulin growth factor-1 (IGF-1), initiates the installment of fibroblast senescence. Fibroblast senescence profoundly disrupts the metabolic and structural niche, and its essential interactions with different stem cells thus enforces depletion of stem cells pools and skin tissue decline. In fact, silencing of JunB in a fibroblast-niche-specific manner-by reinstatement of IGF-1 and p16 levels-restores skin stem cell pools and overall skin tissue integrity. Here, we report a role of JunB in the control of connective tissue niche and identified targets to combat skin aging and associated pathologies.
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Affiliation(s)
- Pallab Maity
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany; Aging Research Center (ARC), 89081 Ulm, Germany.
| | - Karmveer Singh
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany; Aging Research Center (ARC), 89081 Ulm, Germany
| | - Linda Krug
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany
| | - Albert Koroma
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany; Aging Research Center (ARC), 89081 Ulm, Germany
| | - Adelheid Hainzl
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany
| | - Wilhelm Bloch
- Institute of Cardiology and Sports Medicine, Molecular and cellular Sports Medicine, German Sport University Cologne, 50933 Cologne, Germany
| | - Stefan Kochanek
- Department of Gene Therapy, University of Ulm, 89081 Ulm, Germany
| | - Meinhard Wlaschek
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany
| | - Marina Schorpp-Kistner
- Division of Signal Transduction and Growth Control, German Cancer Research Center (DKFZ) and DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany
| | - Peter Angel
- Division of Signal Transduction and Growth Control, German Cancer Research Center (DKFZ) and DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany
| | - Anita Ignatius
- Institute of Orthopaedic Research and Biomechanics, Ulm University, 89081 Ulm, Germany
| | - Hartmut Geiger
- Aging Research Center (ARC), 89081 Ulm, Germany; Institute of Molecular Medicine and Stem Cell Aging, Ulm University, 89081 Ulm, Germany; Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH 45229, USA
| | - Karin Scharffetter-Kochanek
- Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany; Aging Research Center (ARC), 89081 Ulm, Germany.
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Crespo-Garcia S, Tsuruda PR, Dejda A, Ryan RD, Fournier F, Chaney SY, Pilon F, Dogan T, Cagnone G, Patel P, Buscarlet M, Dasgupta S, Girouard G, Rao SR, Wilson AM, O'Brien R, Juneau R, Guber V, Dubrac A, Beausejour C, Armstrong S, Mallette FA, Yohn CB, Joyal JS, Marquess D, Beltran PJ, Sapieha P. Pathological angiogenesis in retinopathy engages cellular senescence and is amenable to therapeutic elimination via BCL-xL inhibition. Cell Metab 2021; 33:818-832.e7. [PMID: 33548171 DOI: 10.1016/j.cmet.2021.01.011] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/30/2020] [Accepted: 01/11/2021] [Indexed: 02/07/2023]
Abstract
Attenuating pathological angiogenesis in diseases characterized by neovascularization such as diabetic retinopathy has transformed standards of care. Yet little is known about the molecular signatures discriminating physiological blood vessels from their diseased counterparts, leading to off-target effects of therapy. We demonstrate that in contrast to healthy blood vessels, pathological vessels engage pathways of cellular senescence. Senescent (p16INK4A-expressing) cells accumulate in retinas of patients with diabetic retinopathy and during peak destructive neovascularization in a mouse model of retinopathy. Using either genetic approaches that clear p16INK4A-expressing cells or small molecule inhibitors of the anti-apoptotic protein BCL-xL, we show that senolysis suppresses pathological angiogenesis. Single-cell analysis revealed that subsets of endothelial cells with senescence signatures and expressing Col1a1 are no longer detected in BCL-xL-inhibitor-treated retinas, yielding a retina conducive to physiological vascular repair. These findings provide mechanistic evidence supporting the development of BCL-xL inhibitors as potential treatments for neovascular retinal disease.
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Quabius ES, Tribius S, Heinrichs A, Haaser D, Kühnel A, Laudien M, Hoppe F, Mlynski R, Ambrosch P, Hoffmann M. HPV DNA/RNA detection in various oral and oropharyngeal biomaterials identifies active HPV infections also in non-neoplastic tonsils. Transl Oncol 2020; 14:101002. [PMID: 33352503 PMCID: PMC7772224 DOI: 10.1016/j.tranon.2020.101002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 12/14/2022] Open
Abstract
Previous studies describe a correlation between HPV-positivity and non-smoking in TSCC; p16INK4A-expression as surrogate-marker for HPV-DNA/RNA-positivity is discussed controversially. In the present study, these parameters are assessed prospectively. HPV-status of sputum and tonsillar-swabs was analyzed to determine their validity as surrogate-marker for tissue-HPV-status. TSCC- (n = 52) and non-neoplastic tonsillar tissue (n = 163) were analyzed. HPV-DNA- and HPV-RNA-status of total sputum, cellular fraction and supernatants, tonsillar-swabs and -tissue was determined by (RT)-PCR. Immunohistochemistry determined p16INK4A-expression. 23/163 (14.2%) non-neoplastic tonsils were HPV-DNA-positive; five patients (3 HPV16, 2 HPV11) had active HPV-infections (HPV-RNA-positive), in all biomaterials. 140/163 (85.9%) patients were either HPV-DNA-positive or HPV-DNA-negative in all samples. 21/52 (40.4%) TSCC-tonsils were HPV-DNA-positive; 17 patients were HPV-RNA-positive (14 HPV16; 4 HPV18). 40/52 (76.9%) TSCC-patients were congruent in all biomaterials. p16INK4A-expression alone would have misclassified the HPV-status of 14/52 (26.2%) TSCC-patients. This prospective study confirms the discrepancy between HPV-status and p16INK4A-expression and the significant correlation between non-smoking and HPV-DNA-positivity. HPV-sputum- and/or swab-results do not consistently match tissue-results, possibly having (detrimental) consequences if those were used to assess tissue-HPV-status. In the 5 patients with active HPV infection in the non-neoplasitic tonsils, tonsillectomy likely prevented subsequent development of TSCC.
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Affiliation(s)
- Elgar Susanne Quabius
- Department of Otorhinolaryngology, Head and Neck Surgery, Christian-Albrechts-University Kiel, Arnold-Heller-Str. 3, Building 27, D24105 Kiel, Germany.
| | - Silke Tribius
- Hermann-Holthusen-Institute for Radiation Oncology, Asklepios Hospital St. Georg, Hamburg, Germany.
| | - Alessa Heinrichs
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Rostock, Germany.
| | - Dirk Haaser
- Department of Otorhinolaryngology, Head and Neck Surgery, Christian-Albrechts-University Kiel, Arnold-Heller-Str. 3, Building 27, D24105 Kiel, Germany
| | - André Kühnel
- Department of Otorhinolaryngology, Head and Neck Surgery, Asklepios Hospital Harburg, Hamburg, Germany.
| | - Martin Laudien
- Department of Otorhinolaryngology, Head and Neck Surgery, Christian-Albrechts-University Kiel, Arnold-Heller-Str. 3, Building 27, D24105 Kiel, Germany
| | - Florian Hoppe
- Department of Otorhinolaryngology-Head and Neck Surgery, Klinikum Oldenburg, Hoppe, Germany.
| | - Robert Mlynski
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Rostock, Germany.
| | - Petra Ambrosch
- Department of Otorhinolaryngology, Head and Neck Surgery, Christian-Albrechts-University Kiel, Arnold-Heller-Str. 3, Building 27, D24105 Kiel, Germany
| | - Markus Hoffmann
- Department of Otorhinolaryngology, Head and Neck Surgery, Christian-Albrechts-University Kiel, Arnold-Heller-Str. 3, Building 27, D24105 Kiel, Germany.
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Missaoui N, Mestiri S, Bdioui A, Zahmoul T, Hamchi H, Mokni M, Hmissa S. HPV infection and p16 INK4A and TP53 expression in rare cancers of the uterine cervix. Pathol Res Pract 2018; 214:498-506. [PMID: 29572122 DOI: 10.1016/j.prp.2018.03.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 02/10/2018] [Accepted: 03/02/2018] [Indexed: 01/04/2023]
Abstract
Cervix cancer remains among most commonly diagnosed cancer in developing countries. Except squamous cell carcinoma and adenocarcinoma, the etiopathology and oncogenic mechanisms of rare cancers remain largely unknown. The study was performed to investigate the value of HPV infection and the expression of p16INK4A and TP53 in rare primitive cancers of the cervix. We conducted a retrospective study of rare primitive cancers of the cervix. Main clinicopathological features were reported. HPV infection was detected by in situ hybridization. Expression of p16INK4A and TP53 was analyzed by immunohistochemistry. Overall, seven cases were identified, including basaloid squamous cell carcinoma (BSCC, n = 2), small cell neuroendocrine carcinoma (SCNEC), granulocytic sarcoma without acute myeloid leukemia, leiomyosarcoma, primitive neuroectodermal tumor and botryoid-type embryonic rhabdomyosarcoma. The mean age of patients was 53.7 years. Four cancers were diagnosed at advanced stages. The prognosis was unfavorable and associated with patient death in five cases. HPV types 16/18 were detected in BSCCs and SCNEC. Strong and diffuse p16INK4A overexpression was described in the nucleus and the cytoplasm of all tumor cells of BSCCs and SCNEC. The remaining cancers exhibited only scattered and focal p16INK4A staining. Mutated TP53 protein was detected in BSCC (case 1) and GS. Rare cancers of the cervix are aggressive and associated with poor prognosis. In contrast to mesenchymal tumors, BSCCs and SCNEC are etiologically related to high-risk HPV infection and could be identified by block positive p16INK4A overexpression as common cancers of the cervix. TP53 mutations are not a negligible genetic event in rare cervical cancers.
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Affiliation(s)
- Nabiha Missaoui
- Research Unit UR14ES17, Cancer Epidemiology and Cytopathology in Tunisian Center, Medicine Faculty, 4002 Sousse, Tunisia; Pathology Department, Farhet Hached Hospital, 4000 Sousse, Tunisia; Faculty of Sciences and Technologies of Sidi Bouzid, University of Kairouan, Tunisia.
| | - Sarra Mestiri
- Pathology Department, Farhet Hached Hospital, 4000 Sousse, Tunisia
| | - Ahlem Bdioui
- Research Unit UR14ES17, Cancer Epidemiology and Cytopathology in Tunisian Center, Medicine Faculty, 4002 Sousse, Tunisia; Pathology Department, Farhet Hached Hospital, 4000 Sousse, Tunisia
| | - Thouraya Zahmoul
- Research Unit UR14ES17, Cancer Epidemiology and Cytopathology in Tunisian Center, Medicine Faculty, 4002 Sousse, Tunisia; Pathology Department, Farhet Hached Hospital, 4000 Sousse, Tunisia
| | - Hajer Hamchi
- Research Unit UR14ES17, Cancer Epidemiology and Cytopathology in Tunisian Center, Medicine Faculty, 4002 Sousse, Tunisia; Pathology Department, Farhet Hached Hospital, 4000 Sousse, Tunisia
| | - Moncef Mokni
- Pathology Department, Farhet Hached Hospital, 4000 Sousse, Tunisia
| | - Sihem Hmissa
- Research Unit UR14ES17, Cancer Epidemiology and Cytopathology in Tunisian Center, Medicine Faculty, 4002 Sousse, Tunisia; Pathology Department, Farhet Hached Hospital, 4000 Sousse, Tunisia
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Hernandez BY, Rahman M, Lynch CF, Cozen W, Unger ER, Steinau M, Thompson T, Saber MS, Altekruse SF, Goodman MT, Powers A, Lyu C, Saraiya M. p16(INK4A) expression in invasive laryngeal cancer. Papillomavirus Res 2016; 2:52-5. [PMID: 29034342 DOI: 10.1016/j.pvr.2016.03.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
We examined p16 expression in tumors from a population-based sample of laryngeal cancer cases diagnosed in the U.S. Samples had been previously genotyped for HPV DNA. Overall, p16 expression was observed in laryngeal tissue from 8 of 101 (7.9%) cases. p16 expression was observed in 2 of 16 (12.5%) cases previously determined to be HPV DNA positive. The two cases dually positive for p16 and HPV DNA were non-keratinizing SCC and papillary SCC tumors that were positive for genotypes 18 and 35/89, respectively. Positivity for p16 and/or HPV DNA was not associated with 5-year survival (log-rank p value=0.55). Our findings support a limited role of HPV in laryngeal carcinogenesis. p16 is not a reliable surrogate for HPV status in laryngeal cancers and is not a predictor of laryngeal cancer survival.
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Venza M, Visalli M, Biondo C, Lentini M, Catalano T, Teti D, Venza I. Epigenetic regulation of p14ARF and p16INK4A expression in cutaneous and uveal melanoma. Biochim Biophys Acta 2015; 1849:247-56. [PMID: 25497382 DOI: 10.1016/j.bbagrm.2014.12.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 12/01/2014] [Accepted: 12/03/2014] [Indexed: 12/12/2022]
Abstract
Inactivation of p14ARF and p16INK4A by epigenetic changes in cutaneous and uveal melanoma has been here investigated. Compared with melanocytes, p14ARF mRNA reduction and p16INK4A inactivation were frequently noticed. No association between p14ARF promoter methylation and mRNA levels was found, whereas aberrant p16INK4A methylation was associated with gene silencing (p<0.001). Comparative analysis within melanomas of different Breslow's thicknesses showed that drastic reductions in p14ARF and p16INK4A expression appeared at the level of thin/intermediate and intermediate/thick transitions. The effects of 5-aza-2'-deoxycytidine (5-aza-dC) and suberanilohydroxamic acid (SAHA) on in vivo binding of DNA methyltransferases (DNMTs) and acetyl histone H3/H4 to p14ARF and p16INK4A promoters were tested together with the impact of ectopic expression of p14ARF and p16INK4A on cell proliferation, migration, and invasion. SAHA treatment induced H3 and H4 hyperacetylation at the p14ARF promoter followed by increased p14ARF expression, whereas exposure to 5-aza-dC decreased the recruitment of DNMT1 and DNMT3b at the p16INK4A promoter and reactivated p16INK4A. Studies on promoter-associated di-methyl histone H3 (Lys4) levels ruled out an involvement of this epigenetic trait on p14ARF and p16INK4A expression. The enforced expression of p14ARF or p16INK4A and, even more so, their co-expression, significantly reduced cell proliferation, migration and invasion. Our data pinpoint: i) a frequent impairment of p14ARF and p16INK4A gene expression by epigenetic modifications in melanoma; ii) histone hypoacetylation as the dominant mechanism of p14ARF silencing; and iii) 5' CpG promoter methylation as the major mechanism of p16INK4A gene inactivation. Collectively, our data suggest that selected epi-drugs may be useful in melanoma treatment.
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Conde-Perez A, Larue L. Human relevance of NRAS/BRAF mouse melanoma models. Eur J Cell Biol 2013; 93:82-6. [PMID: 24342721 DOI: 10.1016/j.ejcb.2013.10.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 10/27/2013] [Accepted: 10/28/2013] [Indexed: 10/26/2022] Open
Abstract
Melanoma is a major problem for many individuals worldwide. Although no effective treatment is available, promising new strategies are being developed. A better understanding of the inner workings of the disease would undoubtedly lead to improved treatments. Mouse melanoma models have been used to elucidate many key regulatory pathways involved in melanoma initiation and progression, and models with mutations in the oncogenes RAF and RAS have been particularly informative. Here, we summarize and evaluate the human relevance of various RAF and RAS mouse melanoma models and their contribution to our understanding of melanoma.
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Affiliation(s)
- Alejandro Conde-Perez
- Institut Curie, Normal and Pathological Development of Melanocytes, 91405 Orsay, France; CNRS UMR3347, France; INSERM U1021, France
| | - Lionel Larue
- Institut Curie, Normal and Pathological Development of Melanocytes, 91405 Orsay, France; CNRS UMR3347, France; INSERM U1021, France.
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Gilbert DC, Williams A, Allan K, Stokoe J, Jackson T, Linsdall S, Bailey CM, Summers J. p16INK4A, p53, EGFR expression and KRAS mutation status in squamous cell cancers of the anus: correlation with outcomes following chemo-radiotherapy. Radiother Oncol 2013; 109:146-51. [PMID: 24021343 DOI: 10.1016/j.radonc.2013.08.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2012] [Revised: 08/08/2013] [Accepted: 08/08/2013] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND PURPOSE Squamous cell carcinomas of the anal canal are associated with infection with Human Papilloma Viruses (HPVs). Chemo-radiotherapy (CRT) gives 70% 3-year relapse-free survival. Improved predictive markers and therapeutic options are required. METHODS Tumours from 153 patients treated with radical chemo-radiotherapy (50.4 Gy in 28# with concurrent Mitomycin and 5-Fluorouracil between 2004 and 2009) were retrieved and immunohistochemistry performed for p16(INK4A), p53 and EGFR and correlated with outcome. Primary and relapsed samples were analysed for mutations in KRAS. RESULTS 137/153 (89.5%) stained moderately or strongly for p16(INK4A). p16(INK4A) correlated strongly with outcome. 37/137 patients demonstrating moderate/strong p16(INK4A) expression relapsed (27.0%), as opposed to 10/16 (62.5%) with absent/weak staining (log rank test p<0.001). p16 and p53 expression were inversely correlated. p16(INK4A) negative tumours were more frequent in men. p16(INK4A) negative patients had significantly worse overall survival (p<0.001). No mutations in KRAS were identified in primary tumours or relapses following treatment. CONCLUSIONS p16(INK4A) is strongly associated with relapse in SCC of the anus and identifies patients with very poor rates of relapse-free and overall survival. Primary and recurrent anal cancer expresses wild type KRAS, unaffected by treatment, supporting trials targeting EGFR in poor risk/recurrent anal cancer.
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Affiliation(s)
- Duncan C Gilbert
- Sussex Cancer Centre, Brighton and Sussex University Hospitals NHS Trust, United Kingdom; Brighton and Sussex Medical School, University of Sussex, Brighton, United Kingdom.
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Avena P, Anselmo W, Whitaker-Menezes D, Wang C, Pestell RG, Lamb RS, Hulit J, Casaburi I, Andò S, Martinez-Outschoorn UE, Lisanti MP, Sotgia F. Compartment-specific activation of PPARγ governs breast cancer tumor growth, via metabolic reprogramming and symbiosis. Cell Cycle 2013; 12:1360-70. [PMID: 23574724 DOI: 10.4161/cc.24289] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The role of PPARγ in cancer therapy is controversial, with studies showing either pro-tumorigenic or antineoplastic effects. This debate is very clinically relevant, because PPARγ agonists are used as antidiabetic drugs. Here, we evaluated if the effects of PPARγ on tumorigenesis are determined by the cell type in which PPARγ is activated. Second, we examined if the metabolic changes induced by PPARγ, such as glycolysis and autophagy, play any role in the tumorigenic process. To this end, PPARγ was overexpressed in breast cancer cells or in stromal cells. PPARγ-overexpressing cells were examined with respect to (1) their tumorigenic potential, using xenograft models, and (2) regarding their metabolic features. In xenograft models, we show that when PPARγ is activated in cancer cells, tumor growth is inhibited by 40%. However, when PPARγ is activated in stromal cells, the growth of co-injected breast cancer cells is enhanced by 60%. Thus, the effect(s) of PPARγ on tumorigenesis are dependent on the cell compartment in which PPARγ is activated. Mechanistically, stromal cells with activated PPARγ display metabolic features of cancer-associated fibroblasts, with increased autophagy, glycolysis and senescence. Indeed, fibroblasts overexpressing PPARγ show increased expression of autophagic markers, increased numbers of acidic autophagic vacuoles, increased production of L-lactate, cell hypertrophy and mitochondrial dysfunction. In addition, PPARγ fibroblasts show increased expression of CDKs (p16/p21) and β-galactosidase, which are markers of cell cycle arrest and senescence. Finally, PPARγ induces the activation of the two major transcription factors that promote autophagy and glycolysis, i.e., HIF-1α and NFκB, in stromal cells. Thus, PPARγ activation in stromal cells results in the formation of a catabolic pro-inflammatory microenvironment that metabolically supports cancer growth. Interestingly, the tumor inhibition observed when PPARγ is expressed in epithelial cancer cells is also associated with increased autophagy, suggesting that activation of an autophagic program has both pro- or antitumorigenic effects depending on the cell compartment in which it occurs. Finally, when PPARγ is expressed in epithelial cancer cells, the suppression of tumor growth is associated with a modest inhibition of angiogenesis. In conclusion, these data support the "two-compartment tumor metabolism" model, which proposes that metabolic coupling exists between catabolic stromal cells and oxidative cancer cells. Cancer cells induce autophagy, glycolysis and senescence in stromal cells. In return, stromal cells generate onco-metabolites and mitochondrial fuels (L-lactate, ketones, glutamine/aminoacids and fatty acids) that are used by cancer cells to enhance their tumorigenic potential. Thus, as researchers design new therapies, they must be conscious that cancer is not a cell-autonomous disease, but rather a tumor is an ecosystem of many different cell types, which engage in metabolic symbiosis.
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Affiliation(s)
- Paola Avena
- Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
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Chandarana SP, Lee JS, Chanowski EJP, Sacco AG, Bradford CR, Wolf GT, Prince ME, Moyer JS, Eisbruch A, Worden FP, Giordano TJ, Kumar B, Cordell KG, Carey TE, Chepeha DB. Prevalence and predictive role of p16 and epidermal growth factor receptor in surgically treated oropharyngeal and oral cavity cancer. Head Neck 2012; 35:1083-90. [PMID: 22907805 DOI: 10.1002/hed.23087] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2012] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND The purpose of this study was to describe the relationship of p16 and epidermal growth factor receptor (EGFR) expression with survival in surgically treated patients who had oropharyngeal or oral cavity squamous cell carcinoma (SCC). METHODS Tissue from 36 patients with oropharyngeal SCC and 49 patients with oral cavity SCC treated between 1997 and 2001 was imbedded and immunostained using a tissue microarray. RESULTS The p16 was positive in 57% and 13% of patients with oropharyngeal SCC and oral cavity SCC, respectively. EGFR was positive in 60% and 63% of patients with oropharyngeal SCC and oral cavity SCC, respectively. In patients with oropharyngeal SCC, p16 expression was associated with improved disease-specific survival (DSS), overall survival (OS), and time to recurrence (TTR) (p < .01, < .01, and <.01, respectively). EGFR expression was associated with poorer DSS, OS, and TTR (p < .01, = .01, and < .01, respectively). For oropharyngeal SCC, when examining both p16 and EGFR expression as combined biomarkers, high p16 expression coupled with low EGFR expression was associated with improved DSS (p p16 = .01; p EGFR = .01). Patients with oral cavity SCC showed no association between biomarker and outcome. CONCLUSIONS For patients with oropharyngeal SCC, high p16 and low EGFR were associated with improved outcome, suggesting a predictive role in surgically treated patients.
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Affiliation(s)
- Shamir P Chandarana
- Division of Otolaryngology-Head and Neck Surgery, University of Calgary, Foothills Medical Centre, Calgary, Alberta, Canada
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Kwon JY, Jo YS, Choi YH, Chang JG, Ryu KS, Rha JG, Han KT. Detection of p16(INK4A) in the Mixed Cell Populations of Normal Peripheral Blood Mononuclear Cells and Cervical Cancer Cell Lines. Cancer Res Treat 2003; 35:254-60. [PMID: 26680944 DOI: 10.4143/crt.2003.35.3.254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PURPOSE Human papilloma viruses (HPVs) play a central role in the pathogenesis of neoplastic lesions of the uterine cervix. The viral oncoprotein HPV E6 degrades the p53 protein, and the HPV E7 protein inactivates pRB and increases the expression of the CDK inhibitor, p16(INK4A). We investigated the usefulness of p16(INK4A) as a biologic marker for the cervical dysplastic and neoplastic cells. MATERIALS AND METHODS We examined the expression of p16(INK4A) and cytokeratin in a mixed population of normal peripheral blood mononuclear cells (PBMC) and the cervical cancer cell lines (HeLa, SiHa, and CasKi) using flow cytometry. RESULTS The DNA indices of the HeLa, SiHa and CasKi cell lines were 1.89, 1.53 and 1.75, respectively, indicating that these cells are aneuploid cells. Furthermore, the positive rate of p16(INK4A) expression was 86.7% for the HeLa mixed population, 85.6% for the SiHa mixed population, and 92.2% for the CasKi mixed population. According to the FL3A vs FL3W histogram, electrical gating of the HeLa, SiHa and CasKi mixed populations showed the expression levels of both cytokeratin and p16(INK4A) to be identical, at 86.6%, 84.8% and 85.0%, respectively. These findings revealed that almost all cells selected through electrical gating were cervical cancer cells originating from the epithelium and which expressed cytokeratin and p16(INK4A). On the other hand, when each mixed population was electrically gated for normal PBMC, we found that the PBMCs expressed neither cytokeratin nor p16(INK4A). CONCLUSION Using flow cytometry, we observed the enhanced expression of p16(INK4A) in cervical cancer cell lines. These. RESULTS suggest the usefulness of p16(INK4A) for the selective detection of cervical dysplastic and cancer cells in the liquid-based samples, which are taken from the cervices and contaminated with blood and stromal cells.
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