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Rockmore J, McIntosh G, Pui JC, Mohammaed S, Elgin R. A Rare Primary Osteogenic Sarcoma of the Prostate and Bladder. Cureus 2021; 13:e15689. [PMID: 34277278 PMCID: PMC8284180 DOI: 10.7759/cureus.15689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2021] [Indexed: 11/05/2022] Open
Abstract
Mesenchymal tumors of the genitourinary tract account for 5% percent of bladder malignancies and there are currently 35 documented cases of osteosarcoma type. Concomitant involvement of the prostate in mesenchymal genitourinary malignancies is even rarer. Herein we describe a case of a 72-year-old male with a history of radiation for prostate cancer who develops hematuria. A hematuria evaluation revealed osteosarcoma of the bladder and prostate. He underwent radical cystoprostatectomy with ileal conduit and adjuvant chemotherapy. His disease progressed despite treatment and he elected palliative care 10 months after initial resection. This case reviews a rare histological variant of genitourinary malignancy.
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Affiliation(s)
- Jesse Rockmore
- Urology, Mclaren Macomb/Michigan State University College of Osteopathic Medicine, Clinton Township, USA
| | - Gregory McIntosh
- Department of Urology, Michigan Institute of Urology, Macomb, USA
| | - John C Pui
- Pathology, Beaumont Health, Farmington Hills, USA
| | | | - Robert Elgin
- Department of Urology, Michigan Institute of Urology, Macomb, USA
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2
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Abstract
There are only 30 reported cases of primary malignant melanoma of the bladder in the literature so far. Of those, 17 cases were reported as deceased within three years of presentation. Our case reported here is that of a 78-year-old female who presented with a new-onset incontinence and intermittent hematuria. She had no evidence of primary melanoma anywhere else in her body. The patient was treated with cystectomy and ileal conduit with plans for adjuvant chemotherapy. Unfortunately, the patient succumbed to her disease with diffuse metastatic involvement within 16 months of presentation.
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Affiliation(s)
| | - Andrina R Ajo
- College of Natural Science, Michigan State University, East Lansing, USA
| | - Katie Rosen
- Department of Urology, McLaren Macomb Hospital, Macomb, USA
| | - Roy Miller
- Department of Urology, McLaren Macomb Hospital, Macomb, USA
| | - Safi Mohammed
- Department of Urology, McLaren Macomb Hospital, Macomb, USA
| | - Craig Gordon
- Department of Hematology and Oncology, Beaumont Hospital, Farmington Hills, USA
| | - John C Pui
- Department of Pathology, Beaumont Hospital, Farmington Hills, USA
| | - Gregory McIntosh
- Department of Urology, Michigan Institute of Urology, Macomb, USA
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3
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Abstract
Sclerosing mesenteritis is a rare and often benign condition characterized as a fibrotic disease consisting of non-suppurative inflammation of adipose tissue. Through mass effect, sclerosing mesenteritis can compromise the gastrointestinal lumen as well as mesenteric vessel integrity. There is a poor understanding of this disorder and its pathogenesis, which presents with various symptomatology and often without identification of inciting factors. Patients with sclerosing mesenteritis exhibit gastrointestinal and systemic manifestations including weight loss, fever, nausea, vomiting, diarrhea, and abdominal pain. This case presents a patient with a seven-month history of chronic, epigastric abdominal pain following laparoscopic surgery for acute uncomplicated appendicitis. The patient underwent work-up with computed tomography and magnetic resonance enterography that confirmed the presence of a mesenteric mass of unknown etiology located in the mid-epigastrium. Due to the inability to safely sample the mass, the patient underwent diagnostic laparoscopy, which was subsequently converted to an open procedure where excision of the mesenteric lesion was performed. Surgical pathology revealed fat necrosis with fibrosis, granulomatous inflammation, and dystrophic calcifications consistent with sclerosing mesenteritis. The patient was seen in follow-up with the resolution of her epigastric abdominal pain. This case report demonstrates a unique presentation of a symptomatic patient with a mesenteric mass not amenable to non-invasive biopsy. Complete excision of this lesser sac mass revealed sclerosis mesenteritis as the pathological cause.
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Affiliation(s)
- Thomas J Serena
- General Surgery/Vascular Surgery, Beaumont Health, Livonia, USA
| | | | - John C Pui
- Pathology, Beaumont Health, Farmington Hills, USA
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4
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Ozog DM, Liu A, Chaffins ML, Ormsby AH, Fincher EF, Chipps LK, Mi QS, Grossman PH, Pui JC, Moy RL. Evaluation of Clinical Results, Histological Architecture, and Collagen Expression Following Treatment of Mature Burn Scars With a Fractional Carbon Dioxide Laser. JAMA Dermatol 2013; 149:50-7. [DOI: 10.1001/2013.jamadermatol.668] [Citation(s) in RCA: 129] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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5
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Carlson RM, Haddad L, Pui JC. Brooke-Spiegler syndrome with associated pegged teeth. Cutis 2008; 82:345-349. [PMID: 19090338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The occurrence of cylindromas, trichoepitheliomas, and spiradenomas completes the triad for Brooke-Spiegler syndrome (BSS). This combination represents a rare genetic syndrome with tumors expressing adnexal differentiation. Malignant transformation is rare but reported, and surgical excision is warranted to prevent turban tumor formation of the scalp. Genetic testing is encouraged, with mutations present on the cylindromatosis gene, CYLD, locus. The occurrence of pegged teeth in our patient was most interesting, as it has not been reported in the literature in patients with BSS.
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Affiliation(s)
- Ryan M Carlson
- Oakwood Southshore Medical Center, Trenton, Michigan, USA.
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Pui JC. Distinguishing pseudoepitheliomatous hyperplasia from squamous cell carcinoma in mucosal biopsy specimens from the head and neck. Arch Pathol Lab Med 2006; 130:764; author reply 764. [PMID: 16740023 DOI: 10.5858/2006-130-764b-ir] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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8
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Affiliation(s)
- John C. Pui
- Hilbrich Dermatopathology Laboratory Garden City, MI 48135
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9
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Abstract
OBJECTIVE To describe a case of postirradiation morphea and subcutaneous polyarteritis nodosa occurring simultaneously in a patient and to review the literature on postirradiation autoimmune phenomenon and the potential pathogenesis of such changes. METHODS A 75-year-old woman with breast cancer treated with chemotherapy and radiation who developed postirradiation morphea and subcutaneous polyarteritis nodosa, both inside and outside of the field of radiation, is described. Literature searches were performed on postirradiation morphea and other radiation-related inflammatory cutaneous conditions and the potential pathogenic mechanisms involved. RESULTS Twenty-five cases of postirradiation morphea and 8 cases of postirradiation panniculitis were reported in the literature. Only 3 cases of morphea with distant vasculitis occurring in the same patient have been reported and each of these patients had features suggestive of an underlying connective tissue disease. This is the first case of morphea and subcutaneous polyarteritis nodosa occurring in the same location both inside and outside the field of radiation. CONCLUSIONS Postirradiation morphea is an uncommon condition but is being increasingly recognized. Related phenomena following radiation include postirradiation panniculitis and now postirradiation subcutaneous polyarteritis nodosa. Radiation may be responsible for inducing some of the pathogenic changes seen in scleroderma and other autoimmune diseases. Rheumatologists should be aware of these potential complications of radiation treatment.
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Affiliation(s)
- Soumya M Reddy
- Division of Rheumatology, New York University School of Medicine-Hospital for Joint Diseases, NY, USA.
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10
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Abstract
Rickettsialpox is a rare mite-borne rickettsiosis that is encountered in urban populations in the eastern United States and throughout the world. It is characterized clinically by an eschar, fever, and a papulovesicular eruption. Both of these cutaneous manifestations may be mimicked by infectious diseases that have been designated as bioterrorist agents by the United States Centers for Diseases Control and Prevention: the former by anthrax, and the latter by smallpox. It is thus important for clinicians to be familiar with rickettsialpox. We report 3 cases and review the epidemiology, clinical and laboratory findings, differential diagnosis, and management of this disease.
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Affiliation(s)
- Ritu Saini
- Department of Dermatology and Cutaneous Surgery, University of Miami School of Medicine, Miami, Florida, USA
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11
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Pui JC, Arroyo M, Heintz P. Linear focal elastosis: histopathologic diagnosis of an uncommon dermal elastosis. J Drugs Dermatol 2003; 2:79-83. [PMID: 12852387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
BACKGROUND Linear focal elastosis is an uncommon dermal elastosis that occurs predominantly on the back. Although first described in the lumbar region of elderly white men, more recent reports note similar findings on the trunk and limbs of adolescent Asian men. METHODS We present a typical case of an eighty-three year old white man with a one-year history of asymptomatic linear yellow and erythematous plaques on his lumbar region. RESULTS Light microscopic examination revealed skin with an unremarkable epidermis with coarsely clumped elastic fibers in the reticular dermis, which were highlighted by an elastic tissue stain. CONCLUSION The histopathologic differential diagnosis includes pseudoxanthoma elasticum, connective tissue nevus, elastofibroma, and solar elastosis. Although some of these diagnoses can be excluded by histologic examination, correlation with the clinical findings is necessary to arrive at the correct diagnosis of linear focal elastosis. Linear focal elastosis is an uncommon dermal elastosis that was originally described as asymptomatic linear yellow plaques in the lumbar region in elderly white males 1. Recent reports have extended the spectrum of this entity to include red-yellow linear atrophic to raised plaques on the trunks and limbs of adolescent males, predominantly of Asian descent. Twenty-one cases of linear focal elastosis have been reported in the literature. We report an additional case of linear focal elastosis in an elderly male and review the literature.
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Affiliation(s)
- John C Pui
- Ronald O. Perlman Department of Dermatology, New York University School of Medicine, 530 First Avenue, Suite 7J, New York, NY 10016, USA.
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12
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Pui JC, Meehan S, Moskovits T. Capecitabine induced cutaneous hyperpigmentation: report of a case. J Drugs Dermatol 2002; 1:202-5. [PMID: 12847748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
We report an unusual case of cutaneous and mucosal hyperpigmentation in a thirty-six year old African American woman who was receiving capecitabine chemotherapy for Stage IV breast carcinoma. Possible etiologies for the hyperpigmentation are discussed. To our knowledge, this is the first reported case of capecitabine associated cutaneous hyperpigmentation.
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Affiliation(s)
- John C Pui
- Department of Dermatology, New York University School of Medicine, Suite 7J, 530 First Avenue, New York, NY 10016, USA.
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13
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Allman D, Karnell FG, Punt JA, Bakkour S, Xu L, Myung P, Koretzky GA, Pui JC, Aster JC, Pear WS. Separation of Notch1 promoted lineage commitment and expansion/transformation in developing T cells. J Exp Med 2001; 194:99-106. [PMID: 11435476 PMCID: PMC2193437 DOI: 10.1084/jem.194.1.99] [Citation(s) in RCA: 144] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Notch1 signaling is required for T cell development. We have previously demonstrated that expression of a dominant active Notch1 (ICN1) transgene in hematopoietic stem cells (HSCs) leads to thymic-independent development of CD4(+)CD8(+) double-positive (DP) T cells in the bone marrow (BM). To understand the function of Notch1 in early stages of T cell development, we assessed the ability of ICN1 to induce extrathymic T lineage commitment in BM progenitors from mice that varied in their capacity to form a functional pre-T cell receptor (TCR). Whereas mice repopulated with ICN1 transduced HSCs from either recombinase deficient (Rag-2(-/)-) or Src homology 2 domain--containing leukocyte protein of 76 kD (SLP-76)(-/)- mice failed to develop DP BM cells, recipients of ICN1-transduced Rag-2(-/)- progenitors contained two novel BM cell populations indicative of pre-DP T cell development. These novel BM populations are characterized by their expression of CD3 epsilon and pre-T alpha mRNA and the surface proteins CD44 and CD25. In contrast, complementation of Rag-2(-/)- mice with a TCR beta transgene restored ICN1-induced DP development in the BM within 3 wk after BM transfer (BMT). At later time points, this population selectively and consistently gave rise to T cell leukemia. These findings demonstrate that Notch signaling directs T lineage commitment from multipotent progenitor cells; however, both expansion and leukemic transformation of this population are dependent on T cell-specific signals associated with development of DP thymocytes.
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MESH Headings
- Animals
- Bone Marrow/physiology
- Cell Lineage
- DNA-Binding Proteins/genetics
- DNA-Binding Proteins/metabolism
- Hematopoietic Stem Cells/physiology
- Hyaluronan Receptors/genetics
- Hyaluronan Receptors/metabolism
- Leukemia, T-Cell/genetics
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Mice
- Mice, Transgenic
- Receptor, Notch1
- Receptors, Antigen, T-Cell, alpha-beta/genetics
- Receptors, Antigen, T-Cell, alpha-beta/metabolism
- Receptors, Cell Surface
- Receptors, Interleukin-2/genetics
- Receptors, Interleukin-2/metabolism
- Signal Transduction
- T-Lymphocytes/physiology
- Thymus Gland/cytology
- Transcription Factors
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Affiliation(s)
- David Allman
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, PA 19104
- Abramson Family Cancer Research Institute, University of Pennsylvania Medical Center, Philadelphia, PA 19104
| | - Fredrick G. Karnell
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, PA 19104
- Institute of Medicine and Engineering, University of Pennsylvania Medical Center, Philadelphia, PA 19104
| | | | - Sonia Bakkour
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, PA 19104
- Institute of Medicine and Engineering, University of Pennsylvania Medical Center, Philadelphia, PA 19104
| | - Lanwei Xu
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, PA 19104
- Institute of Medicine and Engineering, University of Pennsylvania Medical Center, Philadelphia, PA 19104
| | - Peggy Myung
- Abramson Family Cancer Research Institute, University of Pennsylvania Medical Center, Philadelphia, PA 19104
| | - Gary A. Koretzky
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, PA 19104
- Abramson Family Cancer Research Institute, University of Pennsylvania Medical Center, Philadelphia, PA 19104
| | - John C. Pui
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, PA 19104
- Institute of Medicine and Engineering, University of Pennsylvania Medical Center, Philadelphia, PA 19104
| | - Jon C. Aster
- Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115
| | - Warren S. Pear
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, PA 19104
- Institute of Medicine and Engineering, University of Pennsylvania Medical Center, Philadelphia, PA 19104
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Pui JC, Furth EE, Minda J, Montone KT. Demonstration of varicella-zoster virus infection in the muscularis propria and myenteric plexi of the colon in an HIV-positive patient with herpes zoster and small bowel pseudo-obstruction (Ogilvie's syndrome). Am J Gastroenterol 2001; 96:1627-30. [PMID: 11374712 DOI: 10.1111/j.1572-0241.2001.03808.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Gastrointestinal symptomatology as a complication of herpes zoster (HZ) is extremely rare, with the majority of reported cases showing only temporal or radiological evidence of GI tract involvement by varicella zoster virus (VZV) infection. We present the first case of documented direct VZV infection in the muscularis propria of the gut presenting as intestinal pseudo-obstruction (Ogilvie's syndrome). The patient was a 34-yr-old HIV+ man who developed small bowel pseudo-obstruction in association with disseminated cutaneous HZ. A partial ileocolectomy specimen demonstrated a focal ulcer in the terminal ileum. Immunohistochemistry against VZV gpI demonstrated diffuse staining of the muscularis propria and myenteric plexi throughout the length of the specimen. Viral particles consistent with Herpesviridae were shown to be present ultrastructurally. We postulate that the viral infection in the neuronal plexi and muscularis propria caused muscle injury leading to pseudo-obstruction.
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Affiliation(s)
- J C Pui
- Department of Pathology, Hospital of the University of Pennsylvania, Philadelphia, 19104, USA
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15
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Izon DJ, Punt JA, Xu L, Karnell FG, Allman D, Myung PS, Boerth NJ, Pui JC, Koretzky GA, Pear WS. Notch1 regulates maturation of CD4+ and CD8+ thymocytes by modulating TCR signal strength. Immunity 2001; 14:253-64. [PMID: 11290335 DOI: 10.1016/s1074-7613(01)00107-8] [Citation(s) in RCA: 147] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Notch signaling regulates cell fate decisions in multiple lineages. We demonstrate in this report that retroviral expression of activated Notch1 in mouse thymocytes abrogates differentiation of immature CD4+CD8+ thymocytes into both CD4 and CD8 mature single-positive T cells. The ability of Notch1 to inhibit T cell development was observed in vitro and in vivo with both normal and TCR transgenic thymocytes. Notch1-mediated developmental arrest was dose dependent and was associated with impaired thymocyte responses to TCR stimulation. Notch1 also inhibited TCR-mediated signaling in Jurkat T cells. These data indicate that constitutively active Notch1 abrogates CD4+ and CD8+ maturation by interfering with TCR signal strength and provide an explanation for the physiological regulation of Notch expression during thymocyte development.
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MESH Headings
- Animals
- Antigens, CD/metabolism
- Antigens, Differentiation, T-Lymphocyte/metabolism
- CD4-Positive T-Lymphocytes/cytology
- CD4-Positive T-Lymphocytes/immunology
- CD5 Antigens/metabolism
- CD8-Positive T-Lymphocytes/cytology
- CD8-Positive T-Lymphocytes/immunology
- Cell Differentiation
- DNA-Binding Proteins/metabolism
- Flow Cytometry
- Gene Expression Regulation
- Histocompatibility Antigens Class I/immunology
- Histocompatibility Antigens Class I/metabolism
- Histocompatibility Antigens Class II/immunology
- Histocompatibility Antigens Class II/metabolism
- Humans
- Jurkat Cells
- Lectins, C-Type
- Liver/cytology
- Liver/embryology
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Mice
- Mice, Transgenic
- NFATC Transcription Factors
- Nuclear Proteins
- Promoter Regions, Genetic/genetics
- Receptor, Notch1
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/immunology
- Receptors, Antigen, T-Cell/metabolism
- Receptors, Cell Surface
- Response Elements/genetics
- Signal Transduction
- Thymus Gland/cytology
- Thymus Gland/immunology
- Thymus Gland/metabolism
- Transcription Factor AP-1/metabolism
- Transcription Factors/metabolism
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Affiliation(s)
- D J Izon
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, PA 19104, USA
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16
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Aster JC, Xu L, Karnell FG, Patriub V, Pui JC, Pear WS. Essential roles for ankyrin repeat and transactivation domains in induction of T-cell leukemia by notch1. Mol Cell Biol 2000; 20:7505-15. [PMID: 11003647 PMCID: PMC86303 DOI: 10.1128/mcb.20.20.7505-7515.2000] [Citation(s) in RCA: 222] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Notch receptors participate in a conserved signaling pathway that controls the development of diverse tissues and cell types, including lymphoid cells. Signaling is normally initiated through one or more ligand-mediated proteolytic cleavages that permit nuclear translocation of the intracellular portion of the Notch receptor (ICN), which then binds and activates transcription factors of the Su(H)/CBF1 family. Several mammalian Notch receptors are oncogenic when constitutively active, including Notch1, a gene initially identified based on its involvement in a (7;9) chromosomal translocation found in sporadic T-cell lymphoblastic leukemias and lymphomas (T-ALL). To investigate which portions of ICN1 contribute to transformation, we performed a structure-transformation analysis using a robust murine bone marrow reconstitution assay. Both the ankyrin repeat and C-terminal transactivation domains were required for T-cell leukemogenesis, whereas the N-terminal RAM domain and a C-terminal domain that includes a PEST sequence were nonessential. Induction of T-ALL correlated with the transactivation activity of each Notch1 polypeptide when fused to the DNA-binding domain of GAL4, with the exception of polypeptides deleted of the ankyrin repeats, which lacked transforming activity while retaining strong transactivation activity. Transforming polypeptides also demonstrated moderate to strong activation of the Su(H)/CBF1-sensitive HES-1 promoter, while polypeptides with weak or absent activity on this promoter failed to cause leukemia. These experiments define a minimal transforming region for Notch1 in T-cell progenitors and suggest that leukemogenic signaling involves recruitment of transcriptional coactivators to ICN1 nuclear complexes.
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MESH Headings
- Animals
- Ankyrin Repeat
- Bone Marrow Transplantation
- Cell Transformation, Neoplastic/metabolism
- Cell Transformation, Neoplastic/pathology
- Clone Cells
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Immunophenotyping
- Leukemia, T-Cell/genetics
- Leukemia, T-Cell/metabolism
- Leukemia, T-Cell/pathology
- Membrane Proteins/chemistry
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Mice
- Mice, Inbred BALB C
- Peptide Fragments/genetics
- Protein Structure, Tertiary
- Receptor, Notch1
- Receptors, Cell Surface
- Recombinant Fusion Proteins
- Retroviridae/genetics
- Sequence Deletion
- Transcription Factors
- Transcriptional Activation
- Transfection
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Affiliation(s)
- J C Aster
- Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA
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18
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Pui JC, Allman D, Xu L, DeRocco S, Karnell FG, Bakkour S, Lee JY, Kadesch T, Hardy RR, Aster JC, Pear WS. Notch1 expression in early lymphopoiesis influences B versus T lineage determination. Immunity 1999; 11:299-308. [PMID: 10514008 DOI: 10.1016/s1074-7613(00)80105-3] [Citation(s) in RCA: 756] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Notch receptors regulate fate decisions in many cells. One outcome of Notch signaling is differentiation of bipotential precursors into one cell type versus another. To investigate consequences of Notch1 expression in hematolymphoid progenitors, mice were reconstituted with bone marrow (BM) transduced with retroviruses encoding a constitutively active form of Notch1. Although neither granulocyte or monocyte differentiation were appreciably affected, lymphopoiesis was dramatically altered. As early as 3 weeks following transplantation, mice receiving activated Notch1-transduced BM contained immature CD4+ CD8+ T cells in the BM and exhibited a simultaneous block in early B cell lymphopoiesis. These results suggest that Notch1 provides a key regulatory signal in determining T lymphoid versus B lymphoid lineage decisions, possibly by influencing lineage commitment from a common lymphoid progenitor cell.
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Affiliation(s)
- J C Pui
- Department of Pathology and Laboratory Medicine and Institute of Medicine and Engineering, University of Pennsylvania Medical Center, Philadelphia 19104, USA
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19
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Pear WS, Miller JP, Xu L, Pui JC, Soffer B, Quackenbush RC, Pendergast AM, Bronson R, Aster JC, Scott ML, Baltimore D. Efficient and rapid induction of a chronic myelogenous leukemia-like myeloproliferative disease in mice receiving P210 bcr/abl-transduced bone marrow. Blood 1998; 92:3780-92. [PMID: 9808572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
Expression of the 210-kD bcr/abl fusion oncoprotein can cause a chronic myelogenous leukemia (CML)-like disease in mice receiving bone marrow cells transduced by bcr/abl-encoding retroviruses. However, previous methods failed to yield this disease at a frequency sufficient enough to allow for its use in the study of CML pathogenesis. To overcome this limitation, we have developed an efficient and reproducible method for inducing a CML-like disease in mice receiving P210 bcr/abl-transduced bone marrow cells. All mice receiving P210 bcr/abl-transduced bone marrow cells succumb to a myeloproliferative disease between 3 and 5 weeks after bone marrow transplantation. The myeloproliferative disease recapitulates many of the hallmarks of human CML and is characterized by high white blood cell counts and extensive extramedullary hematopoiesis in the spleen, liver, bone marrow, and lungs. Use of a retroviral vector coexpressing P210 bcr/abl and green fluorescent protein shows that the vast majority of bcr/abl-expressing cells are myeloid. Analysis of the proviral integration pattern shows that, in some mice, the myeloproliferative disease is clonal. In multiple mice, the CML-like disease has been transplantable, inducing a similar myeloproliferative syndrome within 1 month of transfer to sublethally irradiated syngeneic recipients. The disease in many of these mice has progressed to the development of acute lymphoma/leukemia resembling blast crisis. These results demonstrate that murine CML recapitulates important features of human CML. As such, it should be an excellent model for addressing specific issues relating to the pathogenesis and treatment of this disease.
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MESH Headings
- Animals
- Blast Crisis/pathology
- Bone Marrow Cells/virology
- Bone Marrow Transplantation
- Cells, Cultured/transplantation
- Clone Cells/pathology
- Disease Models, Animal
- Fusion Proteins, bcr-abl/analysis
- Fusion Proteins, bcr-abl/genetics
- Genes, abl
- Genetic Vectors/genetics
- Green Fluorescent Proteins
- Hematopoiesis, Extramedullary
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Luminescent Proteins/genetics
- Mice
- Mice, Inbred BALB C
- Myeloproliferative Disorders/etiology
- Myeloproliferative Disorders/genetics
- Myeloproliferative Disorders/pathology
- Neoplasm Transplantation
- Oncogenes
- Proviruses/genetics
- Radiation Chimera
- Recombinant Fusion Proteins/analysis
- Reproducibility of Results
- Retroviridae/genetics
- Splenomegaly/pathology
- Transfection
- Virus Integration
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Affiliation(s)
- W S Pear
- Department of Pathology and Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, PA, USA.
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Abstract
Myofibroblastoma of the breast is a recently recognized benign mesenchymal mammary tumor that typically occurs as a unilateral, solitary lesion. Myofibroblastomas are well-circumscribed, unencapsulated tumors characterized by spindle cells in fascicles which exhibit varying degrees of myogenic and fibroblastic differentiation. Our case reports a mammary myofibroblastoma occurring in an 82-year-old male with gynecomastia and reviews the reported incidence of this benign spindle cell tumor in the world literature.
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Affiliation(s)
- C C Yoo
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA 19104, USA
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