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Liu S, Zhi Y, Zhang R, You Y, You W, Xu Q, Li J, Li J. Cronkhite‒Canada syndrome as inflammatory hamartomatous polyposis: new evidence from whole transcriptome sequencing of colonic polyps. Orphanet J Rare Dis 2024; 19:35. [PMID: 38297356 PMCID: PMC10832113 DOI: 10.1186/s13023-024-03038-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 01/19/2024] [Indexed: 02/02/2024] Open
Abstract
BACKGROUND Cronkhite-Canada syndrome (CCS) is a rare, nonhereditary disease characterized by diffuse gastrointestinal polyposis and ectodermal abnormalities. Although it has been proposed to be a chronic inflammatory condition, direct evidence of its pathogenesis is lacking. This study aims to investigate the pathophysiology of CCS by analyzing transcriptomic changes in the colonic microenvironment. METHODS Next-generation sequencing-based genome-wide transcriptional profiling was performed on colonic hamartomatous polyps from four CCS patients and normal colonic mucosa from four healthy volunteers. Analyses of differential expression and multiple enrichment analyses were conducted from the molecular level to the cellular level. Quantitative real-time PCR (qRT-PCR) was carried out to validate the sequencing accuracy in samples from six CCS patients and six healthy volunteers. RESULTS A total of 543 differentially expressed genes were identified, including an abundance of CC- and CXC-chemokines. Innate immune response-related pathways and processes, such as leukocyte chemotaxis, cytokine production, IL-17, TNF, IL-1 and NF-kB signaling pathways, were prominently enhanced in CCS colonic polyps. Upregulation of wound healing, epithelial-mesenchymal transition, Wnt, and PI3K-Akt signaling pathways were also observed. Enrichment analyses at different levels identified extracellular structure disorganization, dysfunction of the gut mucosal barrier, and increased angiogenesis. Validation by qRT-PCR confirmed increased expression of the LCN2, IL1B, CXCL1, and CXCL3 genes in CCS colonic polyps. CONCLUSIONS This case-control whole transcriptome analysis of active CCS colonic hamartomatous polyps revealed intricate molecular pathways, emphasizing the role of the innate immune response, extracellular matrix disorganization, inflammatory cell infiltration, increased angiogenesis, and potential epithelial to mesenchymal transition. These findings supports CCS as a chronic inflammatory condition and sheds light on potential therapeutic targets, paving the way for more effective and personalized management of CCS in the future.
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Affiliation(s)
- Shuang Liu
- Department of Allergy, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, 100730, Beijing, People's Republic of China
| | - Yunfei Zhi
- Department of Gastroenterology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, 100730, People's Republic of China
| | - Runfeng Zhang
- Department of Internal Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, 100730, Beijing, China
| | - Yan You
- Department of Pathology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, 100730, Beijing, People's Republic of China
| | - Wen You
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, 210029, Nanjing, People's Republic of China
| | - Qiushi Xu
- Department of Gastroenterology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, 100730, People's Republic of China
| | - Jingnan Li
- Department of Gastroenterology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, 100730, People's Republic of China
| | - Ji Li
- Department of Gastroenterology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, 100730, People's Republic of China.
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Kakkar A, Srivastava K, Deepa S, Kashyap S, Sen S, Bhoriwal S, Kaur K, Deo SVS. HPV-Associated Squamous Cell Carcinoma of the Eyelid: Diagnostic Utility of p16 Immunohistochemistry and mRNA In Situ Hybridization. Head Neck Pathol 2023; 17:889-898. [PMID: 37735287 PMCID: PMC10739694 DOI: 10.1007/s12105-023-01582-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/28/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND High-risk (HR) Human papillomavirus (HPV) has been implicated in pathogenesis of squamous cell carcinomas (SCC) at several sites with mucocutaneous junctions, including the head and neck. SCC is the second most common eyelid malignancy. However, its association with transcriptionally active HR-HPV has not been adequately studied. METHODS Two index cases of eyelid HPV-associated SCC are described in detail. A retrospective cohort of eyelid SCC was examined for p16 immunoexpression. Cases demonstrating p16 positivity or equivocal staining were subjected to high-risk HPV mRNA in situ hybridization (ISH). Quantitative real-time PCR (qPCR) was performed in mRNA ISH-positive cases for HPV genotyping. RESULTS The two index patients were older adult females, with upper eyelid tumours. On histology, both tumours were non-keratinizing SCC with trabecular and nested architecture reminiscent of oropharyngeal HPV-associated non-keratinizing SCC, prompting p16 immunohistochemistry, which was positive. HR-HPV mRNA ISH was positive, and qPCR detected HPV16 in both cases. Three of 20 (15%) archival cases showed p16 immunopositivity and two (10%) showed equivocal staining. However, mRNA ISH was negative. All cases showing p16 immunostaining and lacking HR-HPV were keratinizing SCCs. Thus, 9% of all eyelid SCC examined demonstrated HR-HPV. CONCLUSION The prevalence of HR-HPV in eyelid SCC is low in Indian patients. HPV-associated SCC may mimic commoner eyelid carcinomas as it lacks overt keratinization. In basaloid-appearing eyelid carcinomas, p16 immunopositivity should be followed by reflex HR-HPV mRNA ISH, as p16 immunohistochemistry alone has low specificity. The prognostic role, if any, of HPV association needs further evaluation.
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Affiliation(s)
- Aanchal Kakkar
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, 110029, India.
| | - Kirti Srivastava
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - S Deepa
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Seema Kashyap
- Division of Ocular Pathology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Seema Sen
- Division of Ocular Pathology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Sandeep Bhoriwal
- Department of Surgical Oncology, IRCH, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Kavneet Kaur
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Suryanarayan V S Deo
- Department of Surgical Oncology, IRCH, All India Institute of Medical Sciences, New Delhi, 110029, India
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3
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Protective Effect of Salvianolic Acid B in Acetic Acid-Induced Experimental Colitis in a Mouse Model. Processes (Basel) 2021. [DOI: 10.3390/pr9091589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
In its prominent experimental studies salvianolic acid B (Sal B) is novel because of its well-defined, common physiological effects, which include anti-inflammatory, anti-depressant, cardioprotective, DNA protective, neuroprotective and hepatoprotective activity in experimental animals. Initially, Sal B was studied for its anti-inflammatory properties, used as a remedy for a wide range of disease conditions, but its specific efficacy on inflammatory bowel disease is still unclear. The aim of this current study was to understand the therapeutic potential of Sal B in an acetic acid (AA)—triggered experimental mouse colitis model. Colitis was triggered by intrarectal injection of 5% AA, and then laboratory animals were given Sal B (10, 20 and 40 μg/kg) for seven days. The ulcerated colonic mucosa was assessed by clinical experiment, macroscopical, biological and histopathological analysis. The results showed depleted SOD, CAT, GSH levels and consequential elevated MPO and MDA levels and aberrant crypt foci and mast cells were seen in the AA-induced colonic mucosa of experimental animals. The data obtained from this study demonstrate that a dose of 40 µg/kg showed an efficacious anti-ulcer effect against AA-induced experimental colitis. Based on its antioxidant efficacy, Sal B may therefore be useful as a therapeutic approach for ulcerative colitis.
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Bryson BL, Tamagno I, Taylor SE, Parameswaran N, Chernosky NM, Balasubramaniam N, Jackson MW. Aberrant Induction of a Mesenchymal/Stem Cell Program Engages Senescence in Normal Mammary Epithelial Cells. Mol Cancer Res 2020; 19:651-666. [PMID: 33443106 DOI: 10.1158/1541-7786.mcr-19-1181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 10/23/2020] [Accepted: 12/15/2020] [Indexed: 11/16/2022]
Abstract
Although frequently associated with tumor progression, inflammatory cytokines initially restrain transformation by inducing senescence, a key tumor-suppressive barrier. Here, we demonstrate that the inflammatory cytokine, oncostatin M, activates a mesenchymal/stem cell (SC) program that engages cytokine-induced senescence (CIS) in normal human epithelial cells. CIS is driven by Snail induction and requires cooperation between STAT3 and the TGFβ effector, SMAD3. Importantly, as cells escape CIS, they retain the mesenchymal/SC program and are thereby bestowed with a set of cancer SC (CSC) traits. Of therapeutic importance, cells that escape CIS can be induced back into senescence by CDK4/6 inhibition, confirming that the mechanisms allowing cells to escape senescence are targetable and reversible. Moreover, by combining CDK4/6 inhibition with a senolytic therapy, mesenchymal/CSCs can be efficiently killed. Our studies provide insight into how the CIS barriers that prevent tumorigenesis can be exploited as potential therapies for highly aggressive cancers. IMPLICATIONS: These studies reveal how a normal cell's arduous escape from senescence can bestow aggressive features early in the transformation process, and how this persistent mesenchymal/SC program can create a novel potential targetability following tumor development.
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Affiliation(s)
- Benjamin L Bryson
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio.,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, Ohio
| | - Ilaria Tamagno
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio.,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, Ohio
| | - Sarah E Taylor
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Neetha Parameswaran
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Noah M Chernosky
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio.,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, Ohio
| | - Nikhila Balasubramaniam
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Mark W Jackson
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio. .,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, Ohio
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Carrilho C, Miu C, Kim Y, Karki S, Balmaceda A, Challa B, Diamond S, Monteiro E, Marole E, Lorenzoni C, Zambujo Y, Liu YT, Schooley RT, Lin JH. p16 Expression Correlates with Invasive Ocular Surface Squamous Neoplasms in HIV-Infected Mozambicans. Ocul Oncol Pathol 2020; 6:123-128. [PMID: 32258020 PMCID: PMC7109427 DOI: 10.1159/000502096] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 07/12/2019] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND p16 immunohistochemistry is widely used to diagnose human papillomavirus (HPV)-related squamous neoplasms of cervix, anogenital, head, and neck tissues. The incidence of these HPV-related squamous neoplasms is markedly increased in the HIV-infected population. Ocular surface squamous neoplasia (OSSN) is also more common in HIV-infected patients. However, the expression pattern of p16 in OSSN among HIV-infected patients is unclear. Here, we examined the expression of p16 in OSSN surgical excisions collected from a large HIV-infected cohort from -Mozambique. METHODS OSSN surgical tissue specimens were collected from 75 Mozambican patients. Formalin-fixed, paraffin-embedded tissue blocks from these OSSNs were sectioned, stained with hematoxylin and eosin (H&E), and p16 expression by immunohistochemistry. H&E slides were reviewed to determine if OSSNs were noninvasive conjunctival intraepithelial neoplasms or invasive squamous cell carcinomas (SCC). Cases were classified as p16 positive or negative based on diffuse nuclear and cytoplasmic expression of p16 in neoplastic cells. RESULTS p16 positivity was found in a minority of OSSN cases (14/75). p16 positivity was significantly associated with the invasive SCC type of OSSN in HIV-infected patients (p value of 0.026). CONCLUSIONS The majority of OSSNs in our HIV-infected cohort do not express p16. However, those cases that are p16-positive are significantly more likely to be the invasive SCC form of OSSN. We propose that p16 expression may identify more aggressive OSSNs in HIV-infected populations.
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Affiliation(s)
- Carla Carrilho
- Department of Pathology, Eduardo Mondlane University, Maputo, Mozambique
- Service of Pathology, Maputo Central Hospital, Maputo, Mozambique
| | - Chau Miu
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Yeji Kim
- Department of Ophthalmology, University of California San Diego, La Jolla, California, USA
| | - Susan Karki
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Alexandra Balmaceda
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Bindu Challa
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Scott Diamond
- Department of Pathology, University of California Los Angeles, Los Angeles, California, USA
| | - Eliane Monteiro
- Service of Pathology, Maputo Central Hospital, Maputo, Mozambique
| | - Evelia Marole
- Service of Ophthalmology, Maputo Central Hospital, Maputo, Mozambique
| | - Cesaltina Lorenzoni
- Department of Pathology, Eduardo Mondlane University, Maputo, Mozambique
- Service of Pathology, Maputo Central Hospital, Maputo, Mozambique
- Ministério da Saúde, Programa Nacional de Controlo do Cancro, Maputo, Mozambique
| | - Yolanda Zambujo
- Service of Ophthalmology, Maputo Central Hospital, Maputo, Mozambique
| | - Yu-Tsueng Liu
- Department of Medicine, University of California San Diego, La Jolla, California, USA
| | - Robert T. Schooley
- Department of Medicine, University of California San Diego, La Jolla, California, USA
| | - Jonathan H. Lin
- Service of Pathology, Maputo Central Hospital, Maputo, Mozambique
- Department of Ophthalmology, University of California San Diego, La Jolla, California, USA
- VA San Diego Healthcare System, San Diego, California, USA
- Department of Ophthalmology, Stanford University, Stanford, California, USA
- Department of Pathology, Stanford University, Stanford, California, USA
- VA Palo Alto Healthcare System, Palo Alto, California, USA
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6
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Ip PP, Lim D, Cheung ANY, Oliva E. Immunoexpression of p16 in uterine leiomyomas with infarct-type necrosis: an analysis of 35 cases. Histopathology 2017; 71:743-750. [DOI: 10.1111/his.13282] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/07/2017] [Indexed: 01/12/2023]
Affiliation(s)
- Philip P Ip
- Department of Pathology; The University of Hong Kong; Queen Mary Hospital; Hong Kong
| | - Diana Lim
- Department of Pathology; National University Health System; Singapore
| | - Annie N Y Cheung
- Department of Pathology; The University of Hong Kong; Queen Mary Hospital; Hong Kong
| | - Esther Oliva
- Department of Pathology; Massachusetts General Hospital; Harvard Medical School; Boston MA USA
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7
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Zdravkovic N, Jovanovic I, Radosavljevic G, Zdravkovic N, Mitrovic S, Arsenijevic N. Potential Pro-Inflammatory Role Of VEGF In Patients With Crohn’s Disease. SERBIAN JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2015. [DOI: 10.1515/sjecr-2015-0046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractThe aim of this study was to investigate the expression patterns of p16, p53 and VEGF in affected tissue and serum levels of cytokines TNF-α, IL-6, TGF-β and IL-17 in patients with ulcerative colitis (UC) and fistulating Crohn’s disease (CD). Serum levels of cytokines in patients with ulcerative colitis (n=24) and with Crohn’s disease (n=7) were analysed by ELISA. In colonoscopically obtained biopsies, p16, p53 and vascular endothelial growth factor expression were evaluated by immunohistochemistry.The results of this study clearly show the predominance of pro-inflammatory type 1 and 17 immune response in patients with CD compared to those with UC. We believe that altered p16 and p53 induce enhanced VEGF expression and implicates enhanced production of pro-inflammatory TNF-α and IL-6. TNF-α and IL-6 further facilitate development of type 1/17 immune response.
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Affiliation(s)
- Natasa Zdravkovic
- 1 Department of Internal Medicine, Faculty of Medical Sciences Kragujevac, Serbia
| | - Ivan Jovanovic
- 2 Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences Kragujevac, Serbia
| | - Gordana Radosavljevic
- 2 Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences Kragujevac, Serbia
| | - Nebojsa Zdravkovic
- 3 Department of Medical Informatics and Statistics, Faculty of Medical Sciences Kragujevac, Serbia
| | | | - Nebojsa Arsenijevic
- 2 Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences Kragujevac, Serbia
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8
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Kobalka PJ, Abboud JP, Liao X, Jones K, Lee BW, Korn BS, Kikkawa DO, Lin JH. p16INK4A expression is frequently increased in periorbital and ocular squamous lesions. Diagn Pathol 2015; 10:175. [PMID: 26400483 PMCID: PMC4581440 DOI: 10.1186/s13000-015-0396-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 08/28/2015] [Indexed: 11/12/2022] Open
Abstract
Background p16 expression is a well established biomarker of cervical dysplasia and carcinoma arising from high risk human papilloma virus infection. Increased p16 expression is also seen in squamous neoplasms arising at other sites, including head, neck, and oropharyngeal tract. Squamous lesions are also frequently encountered at ocular surface and peri-orbital skin sites, but the prevalence of increased p16 expression in these lesions has been poorly studied. Methods We retrospectively surveyed 13 ocular surface and 16 orbital squamous lesions biopsied at UC San Diego Healthcare System and VA San Diego Healthcare System for p16 expression by immunohistochemistry. These cases included ocular surface lesions with diagnoses of conjunctival intraepithelial neoplasm (CIN) and squamous cell carcinoma in situ. Peri-orbital eyelid biopsies included lesions with diagnoses of SCCis and invasive squamous cell carcinoma. We performed multivariate logistic regression, followed by student’s T-test or Fisher's exact test to determine if there were statistically significant associations between p16 immunoreactivity and patient age, gender, diagnosis, and ethnicity. Statistical significance was defined as p < 0.05. Results We found an unexpectedly large prevalence of strong nuclear and cytoplasmic p16 immunoreactivity in our cases. Almost all of the ocular surface squamous lesions were diffusely positive for p16 expression (12/13). All of the periorbital lesions showed diffuse p16 immunoreactivity (16/16). Altogether, 28/29 lesions tested showed strong and diffuse p16 expression. We found no statistically significant correlation between p16 expression and patient age, gender, ethnicity, or diagnosis. In 6 of the peri-orbital biopsies, we had sufficient tissue to assess high-risk HPV expression by in situ hybridization. Interestingly, all of these cases were negative for HPV, despite strong p16 expression. Conclusion Strong p16 expression was observed in virtually all of the ocular surface and peri-orbital squamous neoplasms in our study. The relationship between p16 expression and HPV infection in ocular surface and peri-orbital sites requires further investigation.
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Affiliation(s)
- Peter J Kobalka
- Department of Pathology, University of California San Diego and VA San Diego Healthcare System, San Diego, CA, USA. .,Department of Pathology, School of Medicine, UC San Diego, 9500 Gilman Dr., La Jolla, CA, 92093-0612, USA.
| | - Jean-Paul Abboud
- Shiley Eye Center and Department of Ophthalmology, University of California San Diego and VA San Diego Healthcare System, San Diego, CA, USA.
| | - Xiaoyan Liao
- Department of Pathology, University of California San Diego and VA San Diego Healthcare System, San Diego, CA, USA.
| | - Karra Jones
- Department of Pathology, University of California San Diego and VA San Diego Healthcare System, San Diego, CA, USA.
| | - Bradford W Lee
- Shiley Eye Center and Department of Ophthalmology, University of California San Diego and VA San Diego Healthcare System, San Diego, CA, USA.
| | - Bobby S Korn
- Shiley Eye Center and Department of Ophthalmology, University of California San Diego and VA San Diego Healthcare System, San Diego, CA, USA.
| | - Don O Kikkawa
- Shiley Eye Center and Department of Ophthalmology, University of California San Diego and VA San Diego Healthcare System, San Diego, CA, USA.
| | - Jonathan H Lin
- Department of Pathology, University of California San Diego and VA San Diego Healthcare System, San Diego, CA, USA. .,Shiley Eye Center and Department of Ophthalmology, University of California San Diego and VA San Diego Healthcare System, San Diego, CA, USA.
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9
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Boquoi A, Arora S, Chen T, Litwin S, Koh J, Enders GH. Reversible cell cycle inhibition and premature aging features imposed by conditional expression of p16Ink4a. Aging Cell 2015; 14:139-47. [PMID: 25481981 PMCID: PMC4326901 DOI: 10.1111/acel.12279] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/14/2014] [Indexed: 11/28/2022] Open
Abstract
The cyclin-dependent kinase (Cdk) inhibitor p16Ink4a (p16) is a canonical mediator of cellular senescence and accumulates in aging tissues, where it constrains proliferation of some progenitor cells. However, whether p16 induction in tissues is sufficient to inhibit cell proliferation, mediate senescence, and/or impose aging features has remained unclear. To address these issues, we generated transgenic mice that permit conditional p16 expression. Broad induction at weaning inhibited proliferation of intestinal transit-amplifying and Lgr5+ stem cells and rapidly imposed features of aging, including hair loss, skin wrinkling, reduced body weight and subcutaneous fat, an increased myeloid fraction in peripheral blood, poor dentition, and cataracts. Aging features were observed with multiple combinations of p16 transgenes and transactivators and were largely abrogated by a germline Cdk4 R24C mutation, confirming that they reflect Cdk inhibition. Senescence markers were not found, and de-induction of p16, even after weeks of sustained expression, allowed rapid recovery of intestinal cell proliferation and reversal of aging features in most mice. These results suggest that p16-mediated inhibition of Cdk activity is sufficient to inhibit cell proliferation and impose aging features in somatic tissues of mammals and that at least some of these aging features are reversible.
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Affiliation(s)
- Amelie Boquoi
- Cancer Biology Program Fox Chase Cancer Center Philadelphia PA USA
- Department of Medicine Fox Chase Cancer Center Philadelphia PA USA
| | - Sanjeevani Arora
- Cancer Biology Program Fox Chase Cancer Center Philadelphia PA USA
- Department of Medicine Fox Chase Cancer Center Philadelphia PA USA
| | - Tina Chen
- Cancer Biology Program Fox Chase Cancer Center Philadelphia PA USA
- Department of Medicine Fox Chase Cancer Center Philadelphia PA USA
| | - Sam Litwin
- Department of Biostatistics Fox Chase Cancer Center Philadelphia PA USA
| | - James Koh
- Department of Surgery Duke University Medical Center Durham NC USA
| | - Greg H. Enders
- Cancer Biology Program Fox Chase Cancer Center Philadelphia PA USA
- Department of Medicine Fox Chase Cancer Center Philadelphia PA USA
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10
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Dysplasia-like epithelial atypia in ischemic bowel disease. Hum Pathol 2014; 45:1348-57. [DOI: 10.1016/j.humpath.2014.03.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 03/14/2014] [Accepted: 03/19/2014] [Indexed: 12/17/2022]
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11
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Poehlmann A, Reissig K, Schönfeld P, Walluscheck D, Schinlauer A, Hartig R, Lessel W, Guenther T, Silver A, Roessner A. Repeated H2 O2 exposure drives cell cycle progression in an in vitro model of ulcerative colitis. J Cell Mol Med 2013; 17:1619-31. [PMID: 24118792 PMCID: PMC3914643 DOI: 10.1111/jcmm.12150] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 09/04/2013] [Indexed: 12/20/2022] Open
Abstract
The production of hydrogen peroxide (H2O2) drives tumourigenesis in ulcerative colitis (UC). Recently, we showed that H2O2 activates DNA damage checkpoints in human colonic epithelial cells (HCEC) through c-Jun N-terminal Kinases (JNK) that induces p21WAF1. Moreover, caspases circumvented the G1/S and intra-S checkpoints, and cells accumulated in G2/M. The latter observation raised the question of whether repeated H2O2 exposures alter JNK activation, thereby promoting a direct passage of cells from G2/M arrest to driven cell cycle progression. Here, we report that increased proliferation of repeatedly H2O2-exposed HCEC cells (C-cell cultures) was associated with (i) increased phospho-p46 JNK, (ii) decreased total JNK and phospho-p54 JNK and (iii) p21WAF1 down-regulation. Altered JNK activation and p21WAF1 down-regulation were accompanied by defects in maintaining G2/M and mitotic spindle checkpoints through adaptation, as well as by apoptosis resistance following H2O2 exposure. This may cause increased proliferation of C-cell cultures, a defining initiating feature in the inflammation-carcinoma pathway in UC. We further suggest that dysregulated JNK activation is attributed to a non-apoptotic function of caspases, causing checkpoint adaptation in C-cell cultures. Additionally, loss of cell-contact inhibition and the overcoming of senescence, hallmarks of cancer, contributed to increased proliferation. Furthermore, there was evidence that p54 JNK inactivation is responsible for loss of cell-contact inhibition. We present a cellular model of UC and suggest a sinusoidal pattern of proliferation, which is triggered by H2O2-induced reactive oxygen species generation, involving an interplay between JNK activation/inactivation, p21WAF1, c-Fos, c-Jun/phospho-c-Jun, ATF2/phospho-ATF2, β-catenin/TCF4-signalling, c-Myc, CDK6 and Cyclin D2, leading to driven cell cycle progression.
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Affiliation(s)
- Angela Poehlmann
- Department of Pathology, Otto-von-Guericke University, Magdeburg, Germany
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12
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Evidence for DNA damage checkpoint activation in barrett esophagus. Transl Oncol 2011; 3:33-42. [PMID: 20165693 DOI: 10.1593/tlo.09187] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Revised: 09/25/2009] [Accepted: 10/02/2009] [Indexed: 11/18/2022] Open
Abstract
Barrett esophagus is an epithelial metaplasia that predisposes to adenocarcinoma. Better markers of cancer risk are urgently needed to identify those patients who are likely to benefit most from emerging methods of endoscopic ablation. Disease progression is associated with genomic DNA changes (segmental gains, losses, or loss of heterozygosity). Although these changes are not easily assayed directly, we hypothesized that the underlying DNA damage should activate a DNA damage response (DDR), detectable by immunohistochemical (IHC) assays of checkpoint proteins and the resulting replicative phase cell cycle delays. Surgical specimens and endoscopic biopsies (N = 28) were subjected to IHC for the cell cycle markers cyclin A and phosphorylated histone H3 (P-H3), the DDR markers gammaH2AX and phosphorylated ATM/ATR substrates (P-ATM/ATRsub), and the DNA damage-responsive tumor suppressors p16 and p53. Correlations were made with histologic diagnoses. The fractions of cells that stained for cyclin A, P-H3, and gammaH2AX increased in parallel in dysplastic tissue, consistent with checkpoint-mediated cell cycle delays. Foci of nuclear gammaH2AX and P-ATM/ATRsub were demonstrated by standard and confocal immunofluorescence. Staining for p16 was more prevalent in early-stage disease with lower staining for gammaH2AX and P-H3. Staining for p53 was moderately increased in some early-stage disease and strongly increased in some advanced disease, consistent with checkpoint-mediated induction and mutational inactivation of p53, respectively. We suggest that IHC for DDR-associated markers may help stratify risk of disease progression in Barrett.
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13
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Sipos F, Leiszter K, Tulassay Z. Effect of ageing on colonic mucosal regeneration. World J Gastroenterol 2011; 17:2981-6. [PMID: 21799643 PMCID: PMC3132248 DOI: 10.3748/wjg.v17.i25.2981] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 04/01/2011] [Accepted: 04/08/2011] [Indexed: 02/06/2023] Open
Abstract
The physiologic and pathologic cellular and molecular changes occurring with age in the human colon affect both the inflammatory process leading to mucosal injury and the regenerative capacity of the epithelium. On the one hand, age-related telomere shortening and inflamm-ageing may lead to the development of colonic inflammation, which results in epithelial damage. On the other hand, the altered migration and function of regenerative stem cells, the age-related methylation of mucosal healing-associated genes, together with the alterations of growth factor signaling with age, may be involved in delayed mucosal regeneration. The connections of these alterations to the process of ageing are not fully known. The understanding and custom-tailored modification of these mechanisms are of great clinical importance with regard to disease prevention and modern therapeutic strategies. Here, we aim to summarize the age-related microscopic and molecular changes of the human colon, as well as their role in altered mucosal healing.
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Shima K, Nosho K, Baba Y, Cantor M, Meyerhardt JA, Giovannucci EL, Fuchs CS, Ogino S. Prognostic significance of CDKN2A (p16) promoter methylation and loss of expression in 902 colorectal cancers: Cohort study and literature review. Int J Cancer 2011; 128:1080-94. [PMID: 20473920 DOI: 10.1002/ijc.25432] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A cyclin-dependent kinase inhibitor CDKN2A (p16/Ink4a) is a tumor suppressor and upregulated in cellular senescence. CDKN2A promoter methylation and gene silencing are associated with the CpG island methylator phenotype (CIMP) in colon cancer. However, prognostic significance of CDKN2A methylation or loss of CDKN2A (p16) expression independent of CIMP status remains uncertain. Using a database of 902 colorectal cancers in 2 independent cohort studies (the Nurses' Health Study and the Health Professionals Follow-up Study), we quantified CDKN2A promoter methylation and detected hypermethylation in 269 tumors (30%). By immunohistochemistry, we detected loss of CDKN2A (p16) expression in 25% (200/804) of tumors. We analyzed for LINE-1 hypomethylation and hypermethylation at 7 CIMP-specific CpG islands (CACNA1G, CRABP1, IGF2, MLH1, NEUROG1, RUNX3 and SOCS1); microsatellite instability (MSI); KRAS, BRAF and PIK3CA mutations; and expression of TP53 (p53), CTNNB1 (β-catenin), CDKN1A (p21), CDKN1B (p27), CCND1 (cyclin D1), FASN (fatty acid synthase) and PTGS2 (cyclooxygenase-2). CDKN2A promoter methylation and loss of CDKN2A (p16) were associated with shorter overall survival in univariate Cox regression analysis [hazard ratio (HR): 1.36, 95% CI: 1.10-1.66, p = 0.0036 for CDKN2A methylation; HR: 1.30, 95% CI: 1.03-1.63, p = 0.026 for CDKN2A (p16) loss] but not in multivariate analysis that adjusted for clinical and tumor variables, including CIMP, MSI and LINE-1 methylation. Neither CDKN2A promoter methylation nor loss of CDKN2A (p16) was associated with colorectal cancer-specific mortality in uni- or multivariate analysis. Despite its well-established role in carcinogenesis, CDKN2A (p16) promoter methylation or loss of expression in colorectal cancer is not independently associated with patient prognosis.
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Affiliation(s)
- Kaori Shima
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA.
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Wolstein JM, Lee DH, Michaud J, Buot V, Stefanchik B, Plotkin MD. INK4a knockout mice exhibit increased fibrosis under normal conditions and in response to unilateral ureteral obstruction. Am J Physiol Renal Physiol 2010; 299:F1486-95. [PMID: 20861074 DOI: 10.1152/ajprenal.00378.2010] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The INK4a proteins p16(INK4a) and p19(ARF) regulate cell cycle arrest and senescence. However, the role of these proteins in controlling these processes in the normal kidney and following injury is unknown. We performed unilateral ureteral obstruction (UUO) to induce fibrosis in 2- to 3-mo-old wild-type (WT) C57/B6 and INK4a knockout mice. By quantitative RT-PCR, p16(INK4a) levels were increased sixfold in WT mice 7 days after UUO and p19(ARF) remained undetectable. Kidney sections were examined to determine levels and localization of p16(INK4a), apoptosis, fibrosis, and senescent cells. INK4a knockout mice displayed mesangial cell proliferation, increased matrix deposition, and myofibroblast differentiation under normal conditions. Following UUO, INK4a knockout mice displayed 10-fold increased tubular and interstitial cell proliferation, 75% decreased collecting duct apoptosis, 2-fold greater collagen and fibronectin deposition, and no cell senescence by senescence-associated β-galactosidase staining compared with WT mice. Both INK4a knockout mesangial cells and kidney lysates from knockout mice following injury showed elevated levels of IL-6 by ELISA compared with WT samples. INK4a knockout epithelial cell cultures displayed increased mesenchymal cell markers when exposed to transforming growth factor-β. These results confirm that p16(INK4a) controls cell proliferation and matrix production and mitigates fibrosis following injury and suggest that the mechanism involves a role in limiting inflammation and cell proliferation.
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Affiliation(s)
- Jesse M Wolstein
- Renal Research Division, Department of Medicine, New York Medical College, Valhalla, New York 10595, USA
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Neoplasia: the second decade. Neoplasia 2009; 10:1314-24. [PMID: 19048110 DOI: 10.1593/neo.81372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2008] [Revised: 10/27/2008] [Accepted: 10/27/2008] [Indexed: 12/30/2022] Open
Abstract
This issue marks the end of the 10-year anniversary of Neoplasia where we have seen exciting growth in both number of submitted and published articles in Neoplasia. Neoplasia was first published in 1999. During the past 10 years, Neoplasia has dynamically adapted to the needs of the cancer research community as technologies have advanced. Neoplasia is currently providing access to articles through PubMed Central to continue to facilitate rapid broad-based dissemination of published findings to the scientific community through an Open Access model. This has in part helped Neoplasia to achieve an improved impact factor this past year, demonstrating that the manuscripts published by Neoplasia are of great interest to the overall cancer research community. This past year, Neoplasia received a record number of articles for review and has had a 21% increase in the number of published articles.
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Risques RA, Lai LA, Brentnall TA, Li L, Feng Z, Gallaher J, Mandelson MT, Potter JD, Bronner MP, Rabinovitch PS. Ulcerative colitis is a disease of accelerated colon aging: evidence from telomere attrition and DNA damage. Gastroenterology 2008; 135:410-8. [PMID: 18519043 PMCID: PMC2574910 DOI: 10.1053/j.gastro.2008.04.008] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2007] [Revised: 03/24/2008] [Accepted: 04/10/2008] [Indexed: 01/01/2023]
Abstract
BACKGROUND & AIMS Telomere shortening is implicated in cancer and aging and might link these 2 biologic events. We explored this hypothesis in ulcerative colitis (UC), a chronic inflammatory disease that predisposes to colorectal cancer and in which shorter telomeres have been associated with chromosomal instability and tumor progression. METHODS Telomere length was measured by quantitative polymerase chain reaction in colonocytes and leukocytes of 2 different sets of UC patients and compared with normal controls across a wide range of ages. For a subset of patients, telomere length was measured in epithelium and stroma of right and left colon biopsy specimens. A third set of biopsy specimens was analyzed for phosphorylation of histone H2AX (gammaH2AX), a DNA damage signal, by immunofluorescence and for telomere length by quantitative fluorescence in situ hybridization. Relationships between telomere length, gammaH2AX intensity, age, disease duration, and age of disease onset were explored. RESULTS Colonocyte telomeres shorten with age almost twice as rapidly in UC patients as in normal controls. This extensive shortening occurs within approximately 8 years of disease duration. Leukocyte telomeres are slightly shorter in UC patients than in controls, but telomeres of colon stromal cells are unaffected. gammaH2AX intensity is higher in colonocytes of UC patients than in controls and is not dependent on age or telomere length. CONCLUSIONS Colonocytes of UC patients show premature shortening of telomeres, which might explain the increased and earlier risk of cancer in this disease. Shorter leukocyte telomeres and increased gammaH2AX in colonocytes might reflect oxidative damage secondary to inflammation.
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Affiliation(s)
| | - Lisa A. Lai
- Department of Medicine and Division of Gastroenterology, University of Washington, Seattle, WA
| | - Teresa A. Brentnall
- Department of Medicine and Division of Gastroenterology, University of Washington, Seattle, WA
| | - Lin Li
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Ziding Feng
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA
| | | | - Margaret T. Mandelson
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA,Center for Health Studies, Group Health Cooperative, Seattle, WA
| | - John D. Potter
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Mary P. Bronner
- Department of Anatomic Pathology, Cleveland Clinic, Cleveland, OH
| | - Peter S. Rabinovitch
- Department of Pathology, University of Washington, Seattle, WA,Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA
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Abstract
Oxidative stress is defined as an imbalance between generation of reactive oxygen species (ROS) and decreased antioxidant defense systems. Oxidative stress develops particularly in inflammatory reactions because the inflammatory cells, neutrophils, and macrophages produce large amounts of ROS. It has been known for a long time that oxidative stress in inflamed tissue can pave the way for malignant tumors, and that it is a major pathogenetic factor for the well-established correlation between inflammatory diseases and cancer. Oxidative stress has long been associated with the pathogenesis of chronic inflammatory bowel disease (IBD)-related colorectal cancer. This article provides an overview of the pathology of ROS and presents recent advances concerning the role of ROS in IBD-related colorectal carcinogenesis (Fig. 1).
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Expression of anion exchanger 1 sequestrates p16 in the cytoplasm in gastric and colonic adenocarcinoma. Neoplasia 2007; 9:812-9. [PMID: 17971901 DOI: 10.1593/neo.07403] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2007] [Revised: 08/14/2007] [Accepted: 08/14/2007] [Indexed: 01/29/2023] Open
Abstract
p16(INK4A) (p16) binds to cyclin-dependent kinase 4/6 and negatively regulates cell growth. Recent studies have led to an understanding of additional biologic functions for p16; however, the detailed mechanisms involved are still elusive. In this article, we show an unexpected expression of anion exchanger 1 (AE1) in the cytoplasm in poorly and moderately differentiated gastric and colonic adenocarcinoma cells and in its interaction with p16, thereby sequestrating the protein in the cytoplasm. Genetic alterations of p16 and AE1 were not detectable. Forced expression of AE1 in these cells sequestrated more p16 in the cytoplasm, whereas small interfering RNA-mediated silencing of AE1 in the cells induced the release of p16 from the cytoplasm to the nucleus, leading to cell death and growth inhibition of tumor cells. By analyzing tissue samples obtained from patients with gastric and colonic cancers, we found that 83.33% of gastric cancers and 56.52% of colonic cancers coexpressed AE1 and p16 in the cytoplasm. We conclude that AE1 plays a crucial role in the pathogenesis of gastric and colonic adenocarcinoma and that p16 dysfunction is a novel pathway of carcinogenesis.
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Neoplasia: An Anniversary of Progress. Neoplasia 2007. [DOI: 10.1593/neo.07968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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