1
|
Garza KY, King ME, Nagi C, DeHoog RJ, Zhang J, Sans M, Krieger A, Feider CL, Bensussan AV, Keating MF, Lin JQ, Sun MW, Tibshirani R, Pirko C, Brahmbhatt KA, Al-Fartosi AR, Thompson AM, Bonefas E, Suliburk J, Carter SA, Eberlin LS. Intraoperative Evaluation of Breast Tissues During Breast Cancer Operations Using the MasSpec Pen. JAMA Netw Open 2024; 7:e242684. [PMID: 38517441 PMCID: PMC10960202 DOI: 10.1001/jamanetworkopen.2024.2684] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 12/30/2023] [Indexed: 03/23/2024] Open
Abstract
Importance Surgery with complete tumor resection remains the main treatment option for patients with breast cancer. Yet, current technologies are limited in providing accurate assessment of breast tissue in vivo, warranting development of new technologies for surgical guidance. Objective To evaluate the performance of the MasSpec Pen for accurate intraoperative assessment of breast tissues and surgical margins based on metabolic and lipid information. Design, Setting, and Participants In this diagnostic study conducted between February 23, 2017, and August 19, 2021, the mass spectrometry-based device was used to analyze healthy breast and invasive ductal carcinoma (IDC) banked tissue samples from adult patients undergoing breast surgery for ductal carcinomas or nonmalignant conditions. Fresh-frozen tissue samples and touch imprints were analyzed in a laboratory. Intraoperative in vivo and ex vivo breast tissue analyses were performed by surgical staff in operating rooms (ORs) within 2 different hospitals at the Texas Medical Center. Molecular data were used to build statistical classifiers. Main Outcomes and Measures Prediction results of tissue analyses from classification models were compared with gross assessment, frozen section analysis, and/or final postoperative pathology to assess accuracy. Results All data acquired from the 143 banked tissue samples, including 79 healthy breast and 64 IDC tissues, were included in the statistical analysis. Data presented rich molecular profiles of healthy and IDC banked tissue samples, with significant changes in relative abundances observed for several metabolic species. Statistical classifiers yielded accuracies of 95.6%, 95.5%, and 90.6% for training, validation, and independent test sets, respectively. A total of 25 participants enrolled in the clinical, intraoperative study; all were female, and the median age was 58 years (IQR, 44-66 years). Intraoperative testing of the technology was successfully performed by surgical staff during 25 breast operations. Of 273 intraoperative analyses performed during 25 surgical cases, 147 analyses from 22 cases were subjected to statistical classification. Testing of the classifiers on 147 intraoperative mass spectra yielded 95.9% agreement with postoperative pathology results. Conclusions and Relevance The findings of this diagnostic study suggest that the mass spectrometry-based system could be clinically valuable to surgeons and patients by enabling fast molecular-based intraoperative assessment of in vivo and ex vivo breast tissue samples and surgical margins.
Collapse
Affiliation(s)
- Kyana Y. Garza
- Department of Chemistry, The University of Texas at Austin
| | - Mary E. King
- Department of Chemistry, The University of Texas at Austin
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Chandandeep Nagi
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas
| | - Rachel J. DeHoog
- Department of Chemistry, The University of Texas at Austin
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Jialing Zhang
- Department of Chemistry, The University of Texas at Austin
| | - Marta Sans
- Department of Chemistry, The University of Texas at Austin
| | - Anna Krieger
- Department of Chemistry, The University of Texas at Austin
| | | | | | - Michael F. Keating
- Department of Chemistry, The University of Texas at Austin
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - John Q. Lin
- Department of Chemistry, The University of Texas at Austin
| | - Min Woo Sun
- Department of Biomedical Data Science, Stanford University, Stanford, California
| | - Robert Tibshirani
- Department of Biomedical Data Science, Stanford University, Stanford, California
| | - Christopher Pirko
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Kirtan A. Brahmbhatt
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Ahmed R. Al-Fartosi
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Alastair M. Thompson
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Elizabeth Bonefas
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - James Suliburk
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Stacey A. Carter
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Livia S. Eberlin
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| |
Collapse
|
2
|
DeHoog RJ, King ME, Keating MF, Zhang J, Sans M, Feider CL, Garza KY, Bensussan A, Krieger A, Lin JQ, Badal S, Alore E, Pirko C, Brahmbhatt K, Yu W, Grogan R, Eberlin LS, Suliburk J. Intraoperative Identification of Thyroid and Parathyroid Tissues During Human Endocrine Surgery Using the MasSpec Pen. JAMA Surg 2023; 158:1050-1059. [PMID: 37531134 PMCID: PMC10398548 DOI: 10.1001/jamasurg.2023.3229] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 05/08/2023] [Indexed: 08/03/2023]
Abstract
Importance Intraoperative identification of tissues through gross inspection during thyroid and parathyroid surgery is challenging yet essential for preserving healthy tissue and improving outcomes for patients. Objective To evaluate the performance and clinical applicability of the MasSpec Pen (MSPen) technology for discriminating thyroid, parathyroid, and lymph node tissues intraoperatively. Design, Setting, and Participants In this diagnostic/prognostic study, the MSPen was used to analyze 184 fresh-frozen thyroid, parathyroid, and lymph node tissues in the laboratory and translated to the operating room to enable in vivo and ex vivo tissue analysis by endocrine surgeons in 102 patients undergoing thyroidectomy and parathyroidectomy procedures. This diagnostic study was conducted between August 2017 and March 2020. Fresh-frozen tissues were analyzed in a laboratory. Clinical analyses occurred in an operating room at an academic medical center. Of the analyses performed on 184 fresh-frozen tissues, 131 were included based on sufficient signal and postanalysis pathologic diagnosis. From clinical tests, 102 patients undergoing surgery were included. A total of 1015 intraoperative analyses were performed, with 269 analyses subject to statistical classification. Statistical classifiers for discriminating thyroid, parathyroid, and lymph node tissues were generated using training sets comprising both laboratory and intraoperative data and evaluated on an independent test set of intraoperative data. Data were analyzed from July to December 2022. Main Outcomes and Measures Accuracy for each tissue type was measured for classification models discriminating thyroid, parathyroid, and lymph node tissues using MSPen data compared to gross analysis and final pathology results. Results Of the 102 patients in the intraoperative study, 80 were female (78%) and the median (IQR) age was 52 (42-66) years. For discriminating thyroid and parathyroid tissues, an overall accuracy, defined as agreement with pathology, of 92.4% (95% CI, 87.7-95.4) was achieved using MSPen data, with 82.6% (95% CI, 76.5-87.4) accuracy achieved for the independent test set. For distinguishing thyroid from lymph node and parathyroid from lymph node, overall training set accuracies of 97.5% (95% CI, 92.8-99.1) and 96.1% (95% CI, 91.2-98.3), respectively, were achieved. Conclusions and Relevance In this study, the MSPen showed high performance for discriminating thyroid, parathyroid, and lymph node tissues intraoperatively, suggesting this technology may be useful for providing near real-time feedback on tissue type to aid in surgical decision-making.
Collapse
Affiliation(s)
- Rachel J. DeHoog
- Department of Surgery, Baylor College of Medicine, Houston, Texas
- Department of Chemistry, The University of Texas at Austin, Austin
| | - Mary E. King
- Department of Surgery, Baylor College of Medicine, Houston, Texas
- Department of Chemistry, The University of Texas at Austin, Austin
| | | | - Jialing Zhang
- Department of Chemistry, The University of Texas at Austin, Austin
| | - Marta Sans
- Department of Chemistry, The University of Texas at Austin, Austin
| | - Clara L. Feider
- Department of Chemistry, The University of Texas at Austin, Austin
| | - Kyana Y. Garza
- Department of Chemistry, The University of Texas at Austin, Austin
| | - Alena Bensussan
- Department of Chemistry, The University of Texas at Austin, Austin
| | - Anna Krieger
- Department of Chemistry, The University of Texas at Austin, Austin
| | - John Q. Lin
- Department of Chemistry, The University of Texas at Austin, Austin
| | - Sunil Badal
- Department of Chemistry, The University of Texas at Austin, Austin
| | - Elizabeth Alore
- Department of Surgery, Baylor College of Medicine, Houston, Texas
| | | | | | - Wendong Yu
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas
| | - Raymon Grogan
- Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Livia S. Eberlin
- Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - James Suliburk
- Department of Surgery, Baylor College of Medicine, Houston, Texas
| |
Collapse
|
3
|
Irajizad E, Kenney A, Tang T, Vykoukal J, Wu R, Murage E, Dennison JB, Sans M, Long JP, Loftus M, Chabot JA, Kluger MD, Kastrinos F, Brais L, Babic A, Jajoo K, Lee LS, Clancy TE, Ng K, Bullock A, Genkinger JM, Maitra A, Do KA, Yu B, Wolpin BM, Hanash S, Fahrmann JF. A blood-based metabolomic signature predictive of risk for pancreatic cancer. Cell Rep Med 2023; 4:101194. [PMID: 37729870 PMCID: PMC10518621 DOI: 10.1016/j.xcrm.2023.101194] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/20/2022] [Accepted: 08/21/2023] [Indexed: 09/22/2023]
Abstract
Emerging evidence implicates microbiome involvement in the development of pancreatic cancer (PaCa). Here, we investigate whether increases in circulating microbial-related metabolites associate with PaCa risk by applying metabolomics profiling to 172 sera collected within 5 years prior to PaCa diagnosis and 863 matched non-subject sera from participants in the Prostate, Lung, Colorectal, and Ovarian (PLCO) cohort. We develop a three-marker microbial-related metabolite panel to assess 5-year risk of PaCa. The addition of five non-microbial metabolites further improves 5-year risk prediction of PaCa. The combined metabolite panel complements CA19-9, and individuals with a combined metabolite panel + CA19-9 score in the top 2.5th percentile have absolute 5-year risk estimates of >13%. The risk prediction model based on circulating microbial and non-microbial metabolites provides a potential tool to identify individuals at high risk of PaCa that would benefit from surveillance and/or from potential cancer interception strategies.
Collapse
Affiliation(s)
- Ehsan Irajizad
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA; Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ana Kenney
- Department of Statistics, University of California, Berkeley, Berkeley, CA, USA
| | - Tiffany Tang
- Department of Statistics, University of California, Berkeley, Berkeley, CA, USA
| | - Jody Vykoukal
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ranran Wu
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Eunice Murage
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jennifer B Dennison
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Marta Sans
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - James P Long
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Maureen Loftus
- Dana-Farber Brigham and Women's Cancer Center, Division of Gastrointestinal Oncology, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - John A Chabot
- Division of Digestive and Liver Diseases, Columbia University Irving Medical Cancer and the Vagelos College of Physicians and Surgeons, New York, NY, USA
| | - Michael D Kluger
- Division of Digestive and Liver Diseases, Columbia University Irving Medical Cancer and the Vagelos College of Physicians and Surgeons, New York, NY, USA
| | - Fay Kastrinos
- Division of Digestive and Liver Diseases, Columbia University Irving Medical Cancer and the Vagelos College of Physicians and Surgeons, New York, NY, USA; Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, USA
| | - Lauren Brais
- Dana-Farber Brigham and Women's Cancer Center, Division of Gastrointestinal Oncology, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Ana Babic
- Dana-Farber Brigham and Women's Cancer Center, Division of Gastrointestinal Oncology, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Kunal Jajoo
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Linda S Lee
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Thomas E Clancy
- Dana-Farber Brigham and Women's Cancer Center, Division of Surgical Oncology, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA USA
| | - Kimmie Ng
- Dana-Farber Brigham and Women's Cancer Center, Division of Gastrointestinal Oncology, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Andrea Bullock
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Jeanine M Genkinger
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, USA; Department of Epidemiology, Columbia Mailman School of Public Health, New York, NY, USA
| | - Anirban Maitra
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Kim-Anh Do
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Bin Yu
- Department of Statistics, University of California, Berkeley, Berkeley, CA, USA
| | - Brian M Wolpin
- Dana-Farber Brigham and Women's Cancer Center, Division of Gastrointestinal Oncology, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Sam Hanash
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Johannes F Fahrmann
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| |
Collapse
|
4
|
Sans M, Chen Y, Thege FI, Dou R, Min J, Yip-Schneider M, Zhang J, Wu R, Irajizad E, Makino Y, Rajapakshe KI, Hurd MW, León-Letelier RA, Vykoukal J, Dennison JB, Do KA, Wolff RA, Guerrero PA, Kim MP, Schmidt CM, Maitra A, Hanash S, Fahrmann JF. Integrated spatial transcriptomics and lipidomics of precursor lesions of pancreatic cancer identifies enrichment of long chain sulfatide biosynthesis as an early metabolic alteration. bioRxiv 2023:2023.08.14.553002. [PMID: 37645752 PMCID: PMC10462088 DOI: 10.1101/2023.08.14.553002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Background The development of diverse spatial profiling technologies has provided an unprecedented insight into molecular mechanisms driving cancer pathogenesis. Here, we conducted the first integrated cross-species assessment of spatial transcriptomics and spatial metabolomics alterations associated with progression of intraductal papillary mucinous neoplasms (IPMN), bona fide cystic precursors of pancreatic ductal adenocarcinoma (PDAC). Methods Matrix Assisted Laster Desorption/Ionization (MALDI) mass spectrometry (MS)-based spatial imaging and Visium spatial transcriptomics (ST) (10X Genomics) was performed on human resected IPMN tissues (N= 23) as well as pancreata from a mutant Kras;Gnas mouse model of IPMN. Findings were further compared with lipidomic analyses of cystic fluid from 89 patients with histologically confirmed IPMNs, as well as single-cell and bulk transcriptomic data of PDAC and normal tissues. Results MALDI-MS analyses of IPMN tissues revealed long-chain hydroxylated sulfatides, particularly the C24:0(OH) and C24:1(OH) species, to be selectively enriched in the IPMN and PDAC neoplastic epithelium. Integrated ST analyses confirmed that the cognate transcripts engaged in sulfatide biosynthesis, including UGT8, Gal3St1 , and FA2H , were co-localized with areas of sulfatide enrichment. Lipidomic analyses of cystic fluid identified several sulfatide species, including the C24:0(OH) and C24:1(OH) species, to be significantly elevated in patients with IPMN/PDAC compared to those with low-grade IPMN. Targeting of sulfatide metabolism via the selective galactosylceramide synthase inhibitor, UGT8-IN-1, resulted in ceramide-induced lethal mitophagy and subsequent cancer cell death in vitro , and attenuated tumor growth of mutant Kras;Gnas allografts. Transcript levels of UGT8 and FA2H were also selectively enriched in PDAC transcriptomic datasets compared to non-cancerous areas, and elevated tumoral UGT8 was prognostic for poor overall survival. Conclusion Enhanced sulfatide metabolism is an early metabolic alteration in cystic pre-cancerous lesions of the pancreas that persists through invasive neoplasia. Targeting sulfatide biosynthesis might represent an actionable vulnerability for cancer interception.
Collapse
|
5
|
Sans M, Makino Y, Min J, Rajapakshe KI, Yip-Schneider M, Schmidt CM, Hurd MW, Burks JK, Gomez JA, Thege FI, Fahrmann JF, Wolff RA, Kim MP, Guerrero PA, Maitra A. Spatial Transcriptomics of Intraductal Papillary Mucinous Neoplasms of the Pancreas Identifies NKX6-2 as a Driver of Gastric Differentiation and Indolent Biological Potential. Cancer Discov 2023; 13:1844-1861. [PMID: 37285225 PMCID: PMC10880589 DOI: 10.1158/2159-8290.cd-22-1200] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [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] [Received: 10/21/2022] [Revised: 03/18/2023] [Accepted: 06/05/2023] [Indexed: 06/09/2023]
Abstract
Intraductal papillary mucinous neoplasms (IPMN) of the pancreas are bona fide precursor lesions of pancreatic ductal adenocarcinoma (PDAC). The most common subtype of IPMNs harbors a gastric foveolar-type epithelium, and these low-grade mucinous neoplasms are harbingers of IPMNs with high-grade dysplasia and cancer. The molecular underpinning of gastric differentiation in IPMNs is unknown, although identifying drivers of this indolent phenotype might enable opportunities for intercepting progression to high-grade IPMN and cancer. We conducted spatial transcriptomics on a cohort of IPMNs, followed by orthogonal and cross-species validation studies, which established the transcription factor NKX6-2 as a key determinant of gastric cell identity in low-grade IPMNs. Loss of NKX6-2 expression is a consistent feature of IPMN progression, while reexpression of Nkx6-2 in murine IPMN lines recapitulates the aforementioned gastric transcriptional program and glandular morphology. Our study identifies NKX6-2 as a previously unknown transcription factor driving indolent gastric differentiation in IPMN pathogenesis. SIGNIFICANCE Identification of the molecular features driving IPMN development and differentiation is critical to prevent cancer progression and enhance risk stratification. We used spatial profiling to characterize the epithelium and microenvironment of IPMN, which revealed a previously unknown link between NKX6-2 and gastric differentiation, the latter associated with indolent biological potential. See related commentary by Ben-Shmuel and Scherz-Shouval, p. 1768. This article is highlighted in the In This Issue feature, p. 1749.
Collapse
Affiliation(s)
- Marta Sans
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Ahmed Center for Pancreatic Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Yuki Makino
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Ahmed Center for Pancreatic Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jimin Min
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Ahmed Center for Pancreatic Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Kimal I. Rajapakshe
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Ahmed Center for Pancreatic Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Michele Yip-Schneider
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - C Max Schmidt
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Mark W. Hurd
- Ahmed Center for Pancreatic Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jared K. Burks
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Javier A. Gomez
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Fredrik I. Thege
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Ahmed Center for Pancreatic Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Johannes F. Fahrmann
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Robert A. Wolff
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Michael P. Kim
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Paola A. Guerrero
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Ahmed Center for Pancreatic Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Anirban Maitra
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Ahmed Center for Pancreatic Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| |
Collapse
|
6
|
Lin M, Blevins MS, Sans M, Brodbelt JS, Eberlin LS. Deeper Understanding of Solvent-Based Ambient Ionization Mass Spectrometry: Are Molecular Profiles Primarily Dictated by Extraction Mechanisms? Anal Chem 2022; 94:14734-14744. [PMID: 36228313 DOI: 10.1021/acs.analchem.2c03360] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Solvent-based ambient ionization mass spectrometry (MS) techniques provide a powerful approach for direct chemical analysis and molecular profiling of biological tissues. While molecular profiling of tissues has been widely used for disease diagnosis, little is understood about how the interplay among solvent properties, matrix effects, and ion suppression can influence the detection of biological molecules. Here, we perform a systematic investigation of the extraction processes of lipids using an ambient ionization droplet microsampling platform to investigate how the physicochemical properties of the solvent systems and extraction time influence molecular extraction and detection. Direct molecular profiling and quantitative liquid chromatography-mass spectrometry (LC-MS) of discrete solvent droplets after surface sampling were investigated to provide insights into extraction and ionization mechanisms. The results of this study suggest that intermolecular interactions such as hydrogen bonding play a major role in extraction and detection of lipids using solvent-based ambient ionization techniques. In addition, extraction time was observed to impact the molecular profiles obtained, suggesting optimization of this parameter can be performed to favor detection of specific analytes.
Collapse
Affiliation(s)
- Monica Lin
- Department of Chemistry, The University of Texas at Austin, Austin, Texas78712, United States
| | - Molly S Blevins
- Department of Chemistry, The University of Texas at Austin, Austin, Texas78712, United States
| | - Marta Sans
- Department of Chemistry, The University of Texas at Austin, Austin, Texas78712, United States
| | - Jennifer S Brodbelt
- Department of Chemistry, The University of Texas at Austin, Austin, Texas78712, United States
| | - Livia S Eberlin
- Department of Chemistry, The University of Texas at Austin, Austin, Texas78712, United States.,Department of Surgery, Baylor College of Medicine, Houston, Texas77030, United States
| |
Collapse
|
7
|
Zhang J, Sans M, Garza KY, Eberlin LS. MASS SPECTROMETRY TECHNOLOGIES TO ADVANCE CARE FOR CANCER PATIENTS IN CLINICAL AND INTRAOPERATIVE USE. Mass Spectrom Rev 2021; 40:692-720. [PMID: 33094861 DOI: 10.1002/mas.21664] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 09/09/2020] [Accepted: 09/09/2020] [Indexed: 06/11/2023]
Abstract
Developments in mass spectrometry technologies have driven a widespread interest and expanded their use in cancer-related research and clinical applications. In this review, we highlight the developments in mass spectrometry methods and instrumentation applied to direct tissue analysis that have been tailored at enhancing performance in clinical research as well as facilitating translation and implementation of mass spectrometry in clinical settings, with a focus on cancer-related studies. Notable studies demonstrating the capabilities of direct mass spectrometry analysis in biomarker discovery, cancer diagnosis and prognosis, tissue analysis during oncologic surgeries, and other clinically relevant problems that have the potential to substantially advance cancer patient care are discussed. Key challenges that need to be addressed before routine clinical implementation including regulatory efforts are also discussed. Overall, the studies highlighted in this review demonstrate the transformative potential of mass spectrometry technologies to advance clinical research and care for cancer patients. © 2020 Wiley Periodicals, Inc. Mass Spec Rev.
Collapse
Affiliation(s)
- Jialing Zhang
- Department of Chemistry, University of Texas at Austin, Austin, TX
| | - Marta Sans
- Department of Chemistry, University of Texas at Austin, Austin, TX
| | - Kyana Y Garza
- Department of Chemistry, University of Texas at Austin, Austin, TX
| | - Livia S Eberlin
- Department of Chemistry, University of Texas at Austin, Austin, TX
| |
Collapse
|
8
|
Zhang J, Sans M, DeHoog RJ, Garza KY, King ME, Feider CL, Bensussan A, Keating MF, Lin JQ, Povilaitis SC, Katta N, Milner TE, Yu W, Nagi C, Dhingra S, Pirko C, Brahmbhatt KA, Van Buren G, Carter S, Thompson A, Grogan RH, Suliburk J, Eberlin LS. Clinical Translation and Evaluation of a Handheld and Biocompatible Mass Spectrometry Probe for Surgical Use. Clin Chem 2021; 67:1271-1280. [PMID: 34263289 DOI: 10.1093/clinchem/hvab098] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 05/05/2021] [Indexed: 11/13/2022]
Abstract
BACKGROUND Intraoperative tissue analysis and identification are critical to guide surgical procedures and improve patient outcomes. Here, we describe the clinical translation and evaluation of the MasSpec Pen technology for molecular analysis of in vivo and freshly excised tissues in the operating room (OR). METHODS An Orbitrap mass spectrometer equipped with a MasSpec Pen interface was installed in an OR. A "dual-path" MasSpec Pen interface was designed and programmed for the clinical studies with 2 parallel systems that facilitated the operation of the MasSpec Pen. The MasSpec Pen devices were autoclaved before each surgical procedure and were used by surgeons and surgical staff during 100 surgeries over a 12-month period. RESULTS Detection of mass spectral profiles from 715 in vivo and ex vivo analyses performed on thyroid, parathyroid, lymph node, breast, pancreatic, and bile duct tissues during parathyroidectomies, thyroidectomies, breast, and pancreatic neoplasia surgeries was achieved. The MasSpec Pen enabled gentle extraction and sensitive detection of various molecular species including small metabolites and lipids using a droplet of sterile water without causing apparent tissue damage. Notably, effective molecular analysis was achieved while no limitations to sequential histologic tissue analysis were identified and no device-related complications were reported for any of the patients. CONCLUSIONS This study shows that the MasSpec Pen system can be successfully incorporated into the OR, allowing direct detection of rich molecular profiles from tissues with a seconds-long turnaround time that could be used to inform surgical and clinical decisions without disrupting tissue analysis workflows.
Collapse
Affiliation(s)
- Jialing Zhang
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - Marta Sans
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - Rachel J DeHoog
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - Kyana Y Garza
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - Mary E King
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - Clara L Feider
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - Alena Bensussan
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - Michael F Keating
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - John Q Lin
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | | | - Nitesh Katta
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX
| | - Thomas E Milner
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX
| | - Wendong Yu
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX
| | - Chandandeep Nagi
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX
| | - Sadhna Dhingra
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX
| | | | | | | | - Stacey Carter
- Department of Surgery, Baylor College of Medicine, Houston, TX
| | | | - Raymon H Grogan
- Department of Surgery, Baylor College of Medicine, Houston, TX
| | - James Suliburk
- Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Livia S Eberlin
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| |
Collapse
|
9
|
King ME, Zhang J, Lin JQ, Garza KY, DeHoog RJ, Feider CL, Bensussan AV, Sans M, Krieger A, Badal S, Keating MF, Dhingra S, Yu W, Van Buren G, Pirko C, Brahmbhatt K, Fisher WE, Suliburk JW, Eberlin LS. Abstract 624: Clinical evaluation of the MasSpec Pen technology for rapid diagnosis and margin assessment in pancreatic cancer surgery. Cancer Res 2021. [DOI: 10.1158/1538-7445.am2021-624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Precise removal of pancreatic ductal adenocarcinoma (PDAC) with microscopically negative margins, commonly assessed by frozen section analysis, is associated with longer disease-free survival. However, histologic complexities and tissue-processing artifacts can render frozen section analysis of PDAC margins a challenging and time-consuming task, with reported accuracies dependent on the skillset and subspecialty of the pathologist on call. We developed the MasSpec Pen, a handheld device coupled to a mass spectrometer, for rapid (~15 s) and nondestructive molecular analysis and diagnosis of tissues. The MasSpec Pen supplies a discrete water droplet onto a tissue's surface, allowing diagnostic metabolites and lipids to be extracted into the droplet and then transmitted into a mass spectrometer for analysis. Here, we evaluate the performance of the MasSpec Pen for intraoperative diagnosis of PDAC in human pancreatic and bile duct margins. Pancreatic and bile duct tissue samples (N=157) were obtained from the Cooperative Human Tissue Network and Baylor College of Medicine and stored at -80°C prior to analysis. A Q Exactive mass spectrometer (Thermo Scientific) coupled to the MasSpec Pen was used for analysis of thawed samples in the negative ion mode. Tissues were then cryo-sectioned, H&E stained, and blindly evaluated by a pathologist. Based on the distinct molecular profiles acquired, we generated two statistical classifiers using lasso penalized logistic regression for distinguishing PDAC from healthy pancreas and bile duct tissue based on a sparse set of molecular features indicative of disease state. For distinguishing normal pancreas from PDAC, an overall accuracy of 91.5%, sensitivity of 95.5%, and specificity of 89.7% was achieved for training, validation, and test sets. Classification results for discriminating normal bile duct from PDAC had an overall accuracy of 95%, sensitivity of 92%, and specificity of 100% in training and validation. We have begun clinical testing of the MasSpec Pen in human surgeries following its successful translation to an operating room at Texas Medical Center. To date, the MasSpec Pen has been used to analyze in vivo and fresh ex vivo tissue in 19 pancreatic surgeries. When predicting on 64 intraoperative analyses using classification models built on banked data, 93.8% agreement with final postoperative pathology reports was achieved. While further validation studies are needed, our results show that the MasSpec Pen can distinguish PDAC from normal pancreas and bile duct tissues with high accuracy and is compatible for in vivo use, suggesting this technology may be valuable for near real-time margin evaluation during pancreatic oncologic surgeries.
Citation Format: Mary E. King, Jialing Zhang, John Q. Lin, Kyana Y. Garza, Rachel J. DeHoog, Clara L. Feider, Alena V. Bensussan, Marta Sans, Anna Krieger, Sunil Badal, Michael F. Keating, Sadhna Dhingra, Wendong Yu, George Van Buren, Christopher Pirko, Kirtan Brahmbhatt, William E. Fisher, James W. Suliburk, Livia S. Eberlin. Clinical evaluation of the MasSpec Pen technology for rapid diagnosis and margin assessment in pancreatic cancer surgery [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr 624.
Collapse
Affiliation(s)
| | | | - John Q. Lin
- 1The University of Texas at Austin, Austin, TX
| | | | | | | | | | - Marta Sans
- 1The University of Texas at Austin, Austin, TX
| | | | - Sunil Badal
- 1The University of Texas at Austin, Austin, TX
| | | | | | - Wendong Yu
- 2Baylor College of Medicine, Houston, TX
| | | | | | | | | | | | | |
Collapse
|
10
|
Colistro V, Rojas-Martínez A, Carracedo A, Tomlinson I, Carvajal-Carmona L, Cruz R, Sans M. Population structure and relatedness estimates in a Mexican sample. Ann Hum Genet 2021; 85:245-248. [PMID: 33830497 DOI: 10.1111/ahg.12421] [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] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/16/2021] [Accepted: 03/26/2021] [Indexed: 01/08/2023]
Abstract
Population stratification (PS) is a confounding factor in genome-wide association studies (GWASs) and also an interesting process itself. Latin American populations have mixed genetic ancestry, which may account for PS. We have analyzed the relatedness, by means of the identity-by-descent (IBD) estimations, in a sample of 1805 individuals and 1.006.703 autosomal mutations from a case-control study of colorectal cancer in Mexico. When using the recommended protocol for quality control assessment, 402 should have been removed due to relatedness. Our purpose was to analyze this value in the context of an admixed population. For that aim, we reanalyzed the sample using two software designed for admixed populations, obtaining estimates of 110 and 70 related individuals to remove. The results showed that the first estimation of relatedness was an effect of the higher Native American contribution in part of the data samples, being a confounding factor for IBD estimations. We conclude in the importance of considering PS and genetic ancestry in order to avoid spurious results, not only in GWAS but also in relatedness analysis.
Collapse
Affiliation(s)
- V Colistro
- Departamento de Métodos Cuantitativos, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - A Rojas-Martínez
- Escuela de Medicina y Ciencias de la Salud, Tecnológico de Monterrey, Monterrey, México
| | - A Carracedo
- Centro Nacional de Genotipado (CEGEN), Universidad de Santiago de Compostela, Santiago de Compostela, Spain.,CIBER de Enfermedades Raras (CIBERER)-Instituto de Salud, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | | | - I Tomlinson
- Edinburgh Cancer Research Centre, University of Edinburgh, Edinburgh, UK
| | - L Carvajal-Carmona
- Genome Center & Department of Biochemistry and Molecular Medicine, School of Medicine, University of California, Davis, California, USA
| | - R Cruz
- CIBER de Enfermedades Raras (CIBERER)-Instituto de Salud, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - M Sans
- Departamento de Antropología Biológica, Facultad de Humanidades y Ciencias de la Educación, Universidad de la República, Montevideo, Uruguay
| |
Collapse
|
11
|
Stohrer C, Horrell S, Meier S, Sans M, von Stetten D, Hough M, Goldman A, Monteiro DCF, Pearson AR. Homogeneous batch micro-crystallization of proteins from ammonium sulfate. Acta Crystallogr D Struct Biol 2021; 77:194-204. [PMID: 33559608 PMCID: PMC7869895 DOI: 10.1107/s2059798320015454] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 11/21/2020] [Indexed: 01/19/2023] Open
Abstract
The emergence of X-ray free-electron lasers has led to the development of serial macromolecular crystallography techniques, making it possible to study smaller and more challenging crystal systems and to perform time-resolved studies on fast time scales. For most of these studies the desired crystal size is limited to a few micrometres, and the generation of large amounts of nanocrystals or microcrystals of defined size has become a bottleneck for the wider implementation of these techniques. Despite this, methods to reliably generate microcrystals and fine-tune their size have been poorly explored. Working with three different enzymes, L-aspartate α-decarboxylase, copper nitrite reductase and copper amine oxidase, the precipitating properties of ammonium sulfate were exploited to quickly transition from known vapour-diffusion conditions to reproducible, large-scale batch crystallization, circumventing the tedious determination of phase diagrams. Furthermore, the specific ammonium sulfate concentration was used to fine-tune the crystal size and size distribution. Ammonium sulfate is a common precipitant in protein crystallography, making these findings applicable to many crystallization systems to facilitate the production of large amounts of microcrystals for serial macromolecular crystallography experiments.
Collapse
Affiliation(s)
- Claudia Stohrer
- Biomedical Sciences, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, United Kingdom
| | - Sam Horrell
- Hamburg Centre for Ultrafast Imaging, Institute for Nanostructure and Solid State Physics, Universität Hamburg, CFEL, Building 99, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Susanne Meier
- Hamburg Centre for Ultrafast Imaging, Institute for Nanostructure and Solid State Physics, Universität Hamburg, CFEL, Building 99, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Marta Sans
- Hamburg Centre for Ultrafast Imaging, Institute for Nanostructure and Solid State Physics, Universität Hamburg, CFEL, Building 99, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - David von Stetten
- European Molecular Biology Laboratory (EMBL), Hamburg Unit c/o DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Michael Hough
- School of Life Sciences, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, United Kingdom
| | - Adrian Goldman
- Biomedical Sciences, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, United Kingdom
- Biological and Environmental Sciences, University of Helsinki, Viikinkaari 5, FIN-00014 Helsinki, Finland
| | - Diana C. F. Monteiro
- Hamburg Centre for Ultrafast Imaging, Institute for Nanostructure and Solid State Physics, Universität Hamburg, CFEL, Building 99, Luruper Chaussee 149, 22761 Hamburg, Germany
- Hauptman–Woodward Medical Research Institute, 700 Ellicott Street, Buffalo, NY 14203, USA
| | - Arwen R. Pearson
- Hamburg Centre for Ultrafast Imaging, Institute for Nanostructure and Solid State Physics, Universität Hamburg, CFEL, Building 99, Luruper Chaussee 149, 22761 Hamburg, Germany
| |
Collapse
|
12
|
Monteiro DCF, von Stetten D, Stohrer C, Sans M, Pearson AR, Santoni G, van der Linden P, Trebbin M. 3D-MiXD: 3D-printed X-ray-compatible microfluidic devices for rapid, low-consumption serial synchrotron crystallography data collection in flow. IUCrJ 2020; 7:207-219. [PMID: 32148849 PMCID: PMC7055382 DOI: 10.1107/s2052252519016865] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 12/17/2019] [Indexed: 05/24/2023]
Abstract
Serial crystallography has enabled the study of complex biological questions through the determination of biomolecular structures at room temperature using low X-ray doses. Furthermore, it has enabled the study of protein dynamics by the capture of atomically resolved and time-resolved molecular movies. However, the study of many biologically relevant targets is still severely hindered by high sample consumption and lengthy data-collection times. By combining serial synchrotron crystallography (SSX) with 3D printing, a new experimental platform has been created that tackles these challenges. An affordable 3D-printed, X-ray-compatible microfluidic device (3D-MiXD) is reported that allows data to be collected from protein microcrystals in a 3D flow with very high hit and indexing rates, while keeping the sample consumption low. The miniaturized 3D-MiXD can be rapidly installed into virtually any synchrotron beamline with only minimal adjustments. This efficient collection scheme in combination with its mixing geometry paves the way for recording molecular movies at synchrotrons by mixing-triggered millisecond time-resolved SSX.
Collapse
Affiliation(s)
- Diana C. F. Monteiro
- The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
- Hauptman–Woodward Medical Research Institute, 700 Ellicott Street, Buffalo, NY 14203, USA
| | - David von Stetten
- European Molecular Biology Laboratory, Notkestrasse 85, 22607 Hamburg, Germany
| | - Claudia Stohrer
- The Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, England
| | - Marta Sans
- The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
- Department of Physics, Universität Hamburg, Jungiusstrasse 9, 20355 Hamburg, Germany
| | - Arwen R. Pearson
- The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
- Department of Physics, Universität Hamburg, Jungiusstrasse 9, 20355 Hamburg, Germany
| | - Gianluca Santoni
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Peter van der Linden
- Partnership for Soft Condensed Matter, European Synchrotron Radiation Facility, 71 Avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Martin Trebbin
- Hauptman–Woodward Medical Research Institute, 700 Ellicott Street, Buffalo, NY 14203, USA
- Department of Chemistry, The State University of New York at Buffalo, Natural Sciences Complex 760, Buffalo, NY 14260-3000, USA
| |
Collapse
|
13
|
Sans M, Krieger A, Wygant BR, Garza KY, Mullins CB, Eberlin LS. Spatially Controlled Molecular Analysis of Biological Samples Using Nanodroplet Arrays and Direct Droplet Aspiration. J Am Soc Mass Spectrom 2020; 31:418-428. [PMID: 32031393 DOI: 10.1021/jasms.9b00077] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Mass spectrometry (MS) has emerged as a valuable technology for molecular and spatial evaluation of biological samples. Ambient ionization MS techniques, in particular, allow direct analysis of tissue samples with minimal pretreatment. Here, we describe the design and optimization of an alternative ambient liquid extraction MS approach for metabolite and lipid profiling and imaging from biological samples. The system combines a piezoelectric picoliter dispenser to form solvent nanodroplets onto the sample surface with controlled and tunable spatial resolution and a conductive capillary to directly aspirate/ionize the nanodroplets for efficient analyte transmission and detection. Using this approach, we performed spatial profiling of mouse brain tissue sections with different droplet sizes (390, 420, and 500 μm). MS analysis of normal and cancerous human brain and ovarian tissues yielded rich metabolic profiles that were characteristic of disease state and enabled visualization of tissue regions with different histologic composition. This method was also used to analyze the lipid profiles of human ovarian cell lines. Overall, our results demonstrate the capabilities of this system for spatially controlled MS analysis of biological samples.
Collapse
Affiliation(s)
- Marta Sans
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
| | - Anna Krieger
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
| | - Bryan R Wygant
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
| | - Kyana Y Garza
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
| | - C Buddie Mullins
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
- McKetta Department of Chemical Engineering , University of Texas at Austin , Austin , Texas 78712 United States
| | - Livia S Eberlin
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
| |
Collapse
|
14
|
Simoska O, Sans M, Eberlin LS, Shear JB, Stevenson KJ. Electrochemical monitoring of the impact of polymicrobial infections on Pseudomonas aeruginosa and growth dependent medium. Biosens Bioelectron 2019; 142:111538. [DOI: 10.1016/j.bios.2019.111538] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/16/2019] [Accepted: 07/24/2019] [Indexed: 01/04/2023]
|
15
|
Sans M, Zhang J, Lin JQ, Feider CL, Giese N, Breen MT, Sebastian K, Liu J, Sood AK, Eberlin LS. Performance of the MasSpec Pen for Rapid Diagnosis of Ovarian Cancer. Clin Chem 2019; 65:674-683. [PMID: 30770374 DOI: 10.1373/clinchem.2018.299289] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 01/22/2019] [Indexed: 11/06/2022]
Abstract
BACKGROUND Accurate tissue diagnosis during ovarian cancer surgery is critical to maximize cancer excision and define treatment options. Yet, current methods for intraoperative tissue evaluation can be time intensive and subjective. We have developed a handheld and biocompatible device coupled to a mass spectrometer, the MasSpec Pen, which uses a discrete water droplet for molecular extraction and rapid tissue diagnosis. Here we evaluated the performance of this technology for ovarian cancer diagnosis across different sample sets, tissue types, and mass spectrometry systems. METHODS MasSpec Pen analyses were performed on 192 ovarian, fallopian tube, and peritoneum tissue samples. Samples were evaluated by expert pathologists to confirm diagnosis. Performance using an Orbitrap and a linear ion trap mass spectrometer was tested. Statistical models were generated using machine learning and evaluated using validation and test sets. RESULTS High performance for high-grade serous carcinoma (n = 131; clinical sensitivity, 96.7%; specificity, 95.7%) and overall cancer (n = 138; clinical sensitivity, 94.0%; specificity, 94.4%) diagnoses was achieved using Orbitrap data. Variations in the mass spectra from normal tissue, low-grade, and high-grade serous ovarian cancers were observed. Discrimination between cancer and fallopian tube or peritoneum tissues was also achieved with accuracies of 92.6% and 87.9%, respectively, and 100% clinical specificity for both. Using ion trap data, excellent results for high-grade serous cancer vs normal ovarian differentiation (n = 40; clinical sensitivity, 100%; specificity, 100%) were obtained. CONCLUSIONS The MasSpec Pen, together with machine learning, provides robust molecular models for ovarian serous cancer prediction and thus has potential for clinical use for rapid and accurate ovarian cancer diagnosis.
Collapse
Affiliation(s)
- Marta Sans
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - Jialing Zhang
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - John Q Lin
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - Clara L Feider
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - Noah Giese
- Department of Chemistry, The University of Texas at Austin, Austin, TX
| | - Michael T Breen
- Department of Women's Health, Dell Medical School, The University of Texas at Austin, Austin, TX
| | - Katherine Sebastian
- Department of Internal Medicine, Dell Medical School, The University of Texas at Austin, Austin, TX
| | - Jinsong Liu
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Anil K Sood
- Department of Gynecologic Oncology and Reproductive Medicine, and the Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Livia S Eberlin
- Department of Chemistry, The University of Texas at Austin, Austin, TX;
| |
Collapse
|
16
|
Feider CL, DeHoog RJ, Sans M, Zhang J, Krieger A, Eberlin LS. DESI Spray Stability in the Negative Ion Mode Is Dependent on Relative Humidity. J Am Soc Mass Spectrom 2019; 30:376-380. [PMID: 30569427 PMCID: PMC6362844 DOI: 10.1007/s13361-018-2105-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/17/2018] [Accepted: 10/29/2018] [Indexed: 06/09/2023]
Abstract
Ambient ionization mass spectrometry (MS) techniques, such as desorption electrospray ionization (DESI), have been increasingly used due to their simplicity, minimal sample preparation requirements, and potential applications in the field and the clinic. However, due to their intrinsic nature, the performance of these methods is susceptible to variations in ambient conditions. Here, we present data that suggests DESI-MS analysis becomes inconsistent below a relative humidity (RH) level of ~ 35%. At low RH, we hypothesize that the DESI spray is subjected to frequent electrical discharges, resulting in unstable ionization and atypical mass spectra. Consequentially, poor image quality is observed when used for tissue imaging. Our results suggest that RH control should be considered in DESI-MS experiments to assure data quality. Graphical Abstract ᅟ.
Collapse
Affiliation(s)
- Clara L Feider
- Department of Chemistry, The University of Texas at Austin, 100 E. 24th St. NHB 6.334, Stop A1590, Austin, TX, 78712-1597, USA
| | - Rachel J DeHoog
- Department of Chemistry, The University of Texas at Austin, 100 E. 24th St. NHB 6.334, Stop A1590, Austin, TX, 78712-1597, USA
| | - Marta Sans
- Department of Chemistry, The University of Texas at Austin, 100 E. 24th St. NHB 6.334, Stop A1590, Austin, TX, 78712-1597, USA
| | - Jialing Zhang
- Department of Chemistry, The University of Texas at Austin, 100 E. 24th St. NHB 6.334, Stop A1590, Austin, TX, 78712-1597, USA
| | - Anna Krieger
- Department of Chemistry, The University of Texas at Austin, 100 E. 24th St. NHB 6.334, Stop A1590, Austin, TX, 78712-1597, USA
| | - Livia S Eberlin
- Department of Chemistry, The University of Texas at Austin, 100 E. 24th St. NHB 6.334, Stop A1590, Austin, TX, 78712-1597, USA.
| |
Collapse
|
17
|
Simoska O, Sans M, Fitzpatrick MD, Crittenden CM, Eberlin LS, Shear JB, Stevenson KJ. Real-Time Electrochemical Detection of Pseudomonas aeruginosa Phenazine Metabolites Using Transparent Carbon Ultramicroelectrode Arrays. ACS Sens 2019; 4:170-179. [PMID: 30525472 DOI: 10.1021/acssensors.8b01152] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [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: 12/20/2022]
Abstract
Here, we use a recently developed electrochemical sensing platform of transparent carbon ultramicroelectrode arrays (T-CUAs) for the in vitro detection of phenazine metabolites from the opportunistic human pathogen Pseudomonas aeruginosa. Specifically, redox-active metabolites pyocyanin (PYO), 5-methylphenazine-1-carboxylic acid (5-MCA), and 1-hydroxyphenazine (OHPHZ) are produced by P. aeruginosa, which is commonly found in chronic wound infections and in the lungs of cystic fibrosis patients. As highly diffusible chemicals, PYO and other metabolites are extremely toxic to surrounding host cells and other competing microorganisms, thus their detection is of great importance as it could provide insights regarding P. aeruginosa virulence mechanisms. Phenazine metabolites are known to play important roles in cellular functions; however, very little is known about how their concentrations fluctuate and influence cellular behaviors over the course of infection and growth. Herein we report the use of easily assembled, low-cost electrochemical sensors that provide rapid response times, enhanced sensitivity, and high reproducibility. As such, these T-CUAs enable real-time electrochemical monitoring of PYO and another extremely reactive and distinct redox-active phenazine metabolite, 5-methylphenazine-1-carboxylic acid (5-MCA), from a highly virulent laboratory P. aeruginosa strain, PA14. In addition to quantifying phenazine metabolite concentrations, changes in phenazine dynamics are observed in the biosynthetic route for the production of PYO. Our quantitative results, over a 48-h period, show increasing PYO concentrations during the first 21 h of bacterial growth, after which PYO levels plateau and then slightly decrease. Additionally, we explore environmental effects on phenazine dynamics and PYO concentrations in two growth media, tryptic soy broth (TSB) and lysogeny broth (LB). The maximum concentrations of cellular PYO were determined to be 190 ± 5 μM and 150 ± 1 μM in TSB and LB, respectively. Finally, using desorption electrospray ionization (DESI) and nanoelectrospray ionization (nano-ESI) mass spectrometry we confirm the detection and identification of reactive phenazine metabolites.
Collapse
Affiliation(s)
- Olja Simoska
- Department of Chemistry, University of Texas at Austin, 1 University Station, Stop A5300, Austin, Texas 78712, United States
| | - Marta Sans
- Department of Chemistry, University of Texas at Austin, 1 University Station, Stop A5300, Austin, Texas 78712, United States
| | - Mignon D. Fitzpatrick
- Department of Chemistry, University of Texas at Austin, 1 University Station, Stop A5300, Austin, Texas 78712, United States
| | - Christopher M. Crittenden
- Department of Chemistry, University of Texas at Austin, 1 University Station, Stop A5300, Austin, Texas 78712, United States
| | - Livia S. Eberlin
- Department of Chemistry, University of Texas at Austin, 1 University Station, Stop A5300, Austin, Texas 78712, United States
| | - Jason B. Shear
- Department of Chemistry, University of Texas at Austin, 1 University Station, Stop A5300, Austin, Texas 78712, United States
| | - Keith J. Stevenson
- Center for Electrochemical Energy Storage, Skolkovo Institute of Science and Technology, 3 Nobel Street, Moscow 143026, Russia
| |
Collapse
|
18
|
Pi-Boleda B, Campos M, Sans M, Basavilbaso A, Illa O, Branchadell V, Estévez JC, Ortuño RM. Synthesis and Gelling Abilities of Polyfunctional Cyclohexane-1,2-dicarboxylic Acid Bisamides: Influence of the Hydroxyl Groups. Molecules 2019; 24:molecules24020352. [PMID: 30669453 PMCID: PMC6358840 DOI: 10.3390/molecules24020352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 01/16/2019] [Accepted: 01/18/2019] [Indexed: 11/16/2022] Open
Abstract
New enantiomerically pure C16-alkyl diamides derived from trihydroxy cyclohexane-1,2-dicarboxylic acid have been synthesized from (−)-shikimic acid. The hydroxyl groups in these compounds are free or, alternatively, they present full or partial protection. Their gelling abilities towards several solvents have been tested and rationalized by means of the combined use of Hansen solubility parameters, scanning electron microscopy (SEM), and circular dichroism (CD), as well as computational calculations. All the results allowed us to account for the capability of each type of organogelator to interact with different solvents and for the main mode of aggregation. Thus, compounds with fully protected hydroxyl groups are good organogelators for methanol and ethanol. In contrast, a related compound bearing three free hydroxyl groups is insoluble in water and polar solvents including alcohols but it is able to gelate some low-polarity solvents. This last behavior can be justified by strong hydrogen bonding between molecules of organogelator, which competes advantageously with polar solvent interactions. As an intermediate case, an organogelator with two free hydroxyl groups presents an ambivalent ability to gelate both apolar and polar solvents by means of two aggregation patterns. These involve hydrogen bonding interactions of the unprotected hydroxyl groups in apolar solvents and intermolecular interactions between amide groups in polar ones.
Collapse
Affiliation(s)
- Bernat Pi-Boleda
- Department de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.
| | - María Campos
- CIQUS (Centro Singular de Investigación en Química Biológica y Materiales Moleculares), Departamento de Química Orgánica Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Marta Sans
- Department de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.
- The Hamburg Center for Ultrafast Imaging (CUI), Luruper Chaussee 149, 22761 Hamburg, Germany.
| | - Antonio Basavilbaso
- CIQUS (Centro Singular de Investigación en Química Biológica y Materiales Moleculares), Departamento de Química Orgánica Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Ona Illa
- Department de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.
| | - Vicenç Branchadell
- Department de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.
| | - Juan Carlos Estévez
- CIQUS (Centro Singular de Investigación en Química Biológica y Materiales Moleculares), Departamento de Química Orgánica Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Rosa M Ortuño
- Department de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.
| |
Collapse
|
19
|
Zaitsev-Doyle JJ, Puchert A, Pfeifer Y, Yan H, Yorke BA, Müller-Werkmeister HM, Uetrecht C, Rehbein J, Huse N, Pearson AR, Sans M. Synthesis and characterisation of α-carboxynitrobenzyl photocaged l-aspartates for applications in time-resolved structural biology. RSC Adv 2019; 9:8695-8699. [PMID: 35518684 PMCID: PMC9061760 DOI: 10.1039/c9ra00968j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 03/06/2019] [Indexed: 01/17/2023] Open
Abstract
We report a new synthetic route to a series of α-carboxynitrobenzyl photocaged l-aspartates for application in time-resolved structural biology. The resulting compounds were characterised in terms of UV/Vis absorption properties, aqueous solubility and stability, and photocleavage rates (τ = μs to ms) and quantum yields (φ = 0.05 to 0.14). We report a new synthetic route to a series of α-carboxynitrobenzyl photocaged l-aspartates for application in time-resolved structural biology.![]()
Collapse
Affiliation(s)
- John J. Zaitsev-Doyle
- The Hamburg Center for Ultrafast Imaging & Institute for Nanostructure and Solid State Physics
- 22761 Hamburg
- Germany
| | - Anke Puchert
- Department of Physics and Centre for Hybrid Nanostructures
- University of Hamburg
- 22761 Hamburg
- Germany
| | - Yannik Pfeifer
- University of Potsdam
- Institute of Chemistry, Physical Chemistry
- 14476 Potsdam
- Germany
| | - Hao Yan
- Heinrich Pette Institute
- Leibniz Institute for Experimental Virology
- 20251 Hamburg
- Germany
| | | | | | - Charlotte Uetrecht
- Heinrich Pette Institute
- Leibniz Institute for Experimental Virology
- 20251 Hamburg
- Germany
- European XFEL GmbH
| | - Julia Rehbein
- Fachbereich für Chemie und Pharmazie
- Universität Regensburg
- 93053 Regensburg
- Germany
| | - Nils Huse
- The Hamburg Center for Ultrafast Imaging & Institute for Nanostructure and Solid State Physics
- 22761 Hamburg
- Germany
- Department of Physics and Centre for Hybrid Nanostructures
- University of Hamburg
| | - Arwen R. Pearson
- The Hamburg Center for Ultrafast Imaging & Institute for Nanostructure and Solid State Physics
- 22761 Hamburg
- Germany
| | - Marta Sans
- The Hamburg Center for Ultrafast Imaging & Institute for Nanostructure and Solid State Physics
- 22761 Hamburg
- Germany
| |
Collapse
|
20
|
Pi-Boleda B, Sorrenti A, Sans M, Illa O, Pons R, Branchadell V, Ortuño RM. Cyclobutane Scaffold in Bolaamphiphiles: Effect of Diastereoisomerism and Regiochemistry on Their Surface Activity Aggregate Structure. Langmuir 2018; 34:11424-11432. [PMID: 30173523 DOI: 10.1021/acs.langmuir.8b01462] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cationic bolaamphiphiles have been synthesized starting from meso cis- or chiral trans-1,2-difunctionalized cyclobutane derivatives. They include cis/trans pairs of diastereoisomers, of N- or C-centered bisamides. The goal of this work was to investigate the influence of stereochemistry and regiochemistry on their abilities as surfactants and self-assembly. Very large differences in surface coverage (2-fold), critical micellar concentration (cmc, up to 2 orders of magnitude), and aggregate structure (from lamellae to fibers) for the four molecules are remarkable due to regio- and stereochemistry differences. Computational calculations were carried out to rationalize the experimental findings and a new methodology has been developed to calculate the structure of these bolaamphiphiles at the surface. Although the four surfactants adopt a wicket-like conformation, for N-centered trans, the distance between polar heads is much larger than that for the other three molecules, as suggested by calculations. We have shown that the interplay between the regiochemistry and stereoisomerism, enhanced by rigidity of the cyclobutane ring, affects different physicochemical properties quite differently. That is, the cmc value is mainly governed by stereochemistry, with regiochemistry only modulating this value. On the other hand, regiochemistry definitely governs the morphology of the supramolecular aggregates (i.e., long fibers versus plates or spherical assemblies), with stereochemistry finely modulating their structural parameters. All these results must help in the rational design of new bolaamphiphiles with predictable properties and useful potential applications.
Collapse
Affiliation(s)
- Bernat Pi-Boleda
- Departament de Química , Universitat Autònoma de Barcelona , Cerdanyola del Vallès, 08193 Barcelona , Spain
| | - Alessandro Sorrenti
- Departament de Química , Universitat Autònoma de Barcelona , Cerdanyola del Vallès, 08193 Barcelona , Spain
| | - Marta Sans
- Departament de Química , Universitat Autònoma de Barcelona , Cerdanyola del Vallès, 08193 Barcelona , Spain
| | - Ona Illa
- Departament de Química , Universitat Autònoma de Barcelona , Cerdanyola del Vallès, 08193 Barcelona , Spain
| | - Ramon Pons
- Departament de Tecnologia Química i de Tensioactius , Institut de Química Avançada de Catalunya, IQAC-CSIC , c/Jordi Girona, 18-26 , 08034 Barcelona , Spain
| | - Vicenç Branchadell
- Departament de Química , Universitat Autònoma de Barcelona , Cerdanyola del Vallès, 08193 Barcelona , Spain
| | - Rosa M Ortuño
- Departament de Química , Universitat Autònoma de Barcelona , Cerdanyola del Vallès, 08193 Barcelona , Spain
| |
Collapse
|
21
|
Gharpure KM, Pradeep S, Sans M, Rupaimoole R, Ivan C, Wu SY, Bayraktar E, Nagaraja AS, Mangala LS, Zhang X, Haemmerle M, Hu W, Rodriguez-Aguayo C, McGuire M, Mak CSL, Chen X, Tran MA, Villar-Prados A, Pena GA, Kondetimmanahalli R, Nini R, Koppula P, Ram P, Liu J, Lopez-Berestein G, Baggerly K, S Eberlin L, Sood AK. FABP4 as a key determinant of metastatic potential of ovarian cancer. Nat Commun 2018; 9:2923. [PMID: 30050129 PMCID: PMC6062524 DOI: 10.1038/s41467-018-04987-y] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 06/06/2018] [Indexed: 12/30/2022] Open
Abstract
The standard treatment for high-grade serous ovarian cancer is primary debulking surgery followed by chemotherapy. The extent of metastasis and invasive potential of lesions can influence the outcome of these primary surgeries. Here, we explored the underlying mechanisms that could increase metastatic potential in ovarian cancer. We discovered that FABP4 (fatty acid binding protein) can substantially increase the metastatic potential of cancer cells. We also found that miR-409-3p regulates FABP4 in ovarian cancer cells and that hypoxia decreases miR-409-3p levels. Treatment with DOPC nanoliposomes containing either miR-409-3p mimic or FABP4 siRNA inhibited tumor progression in mouse models. With RPPA and metabolite arrays, we found that FABP4 regulates pathways associated with metastasis and affects metabolic pathways in ovarian cancer cells. Collectively, these findings demonstrate that FABP4 is functionally responsible for aggressive patterns of disease that likely contribute to poor prognosis in ovarian cancer.
Collapse
Affiliation(s)
- Kshipra M Gharpure
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Sunila Pradeep
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
- Department of Obstetrics and Gynecology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Marta Sans
- Department of Chemistry, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Rajesha Rupaimoole
- Department of Pathology and Institute of RNA Medicine, Beth Israel Deaconess Medical Center Cancer Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Cristina Ivan
- Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, 77030, Texas, USA
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Sherry Y Wu
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Emine Bayraktar
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Archana S Nagaraja
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Lingegowda S Mangala
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
- Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, 77030, Texas, USA
| | - Xinna Zhang
- Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, 77030, Texas, USA
| | - Monika Haemmerle
- Martin-Luther-University Halle-Wittenberg, Institute of Pathology, 06112, Halle (Saale), Germany
| | - Wei Hu
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Cristian Rodriguez-Aguayo
- Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, 77030, Texas, USA
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Michael McGuire
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Celia Sze Ling Mak
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Xiuhui Chen
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Michelle A Tran
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Alejandro Villar-Prados
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Guillermo Armaiz Pena
- Department of Pharmacology, Ponce Health Sciences University, Ponce, 00716, Puerto Rico
| | | | - Ryan Nini
- Graduate School of Biomedical Sciences, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Pranavi Koppula
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Prahlad Ram
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jinsong Liu
- Department of Pathology, Division of Pathology and Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Gabriel Lopez-Berestein
- Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, 77030, Texas, USA
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Keith Baggerly
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Livia S Eberlin
- Department of Chemistry, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Anil K Sood
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA.
- Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, 77030, Texas, USA.
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
| |
Collapse
|
22
|
Zhang J, Rector J, Lin JQ, Young JH, Sans M, Katta N, Giese N, Yu W, Nagi C, Suliburk J, Liu J, Bensussan A, DeHoog RJ, Garza KY, Ludolph B, Sorace AG, Syed A, Zahedivash A, Milner TE, Eberlin LS. Nondestructive tissue analysis for ex vivo and in vivo cancer diagnosis using a handheld mass spectrometry system. Sci Transl Med 2018; 9:9/406/eaan3968. [PMID: 28878011 DOI: 10.1126/scitranslmed.aan3968] [Citation(s) in RCA: 234] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 08/17/2017] [Indexed: 12/13/2022]
Abstract
Conventional methods for histopathologic tissue diagnosis are labor- and time-intensive and can delay decision-making during diagnostic and therapeutic procedures. We report the development of an automated and biocompatible handheld mass spectrometry device for rapid and nondestructive diagnosis of human cancer tissues. The device, named MasSpec Pen, enables controlled and automated delivery of a discrete water droplet to a tissue surface for efficient extraction of biomolecules. We used the MasSpec Pen for ex vivo molecular analysis of 20 human cancer thin tissue sections and 253 human patient tissue samples including normal and cancerous tissues from breast, lung, thyroid, and ovary. The mass spectra obtained presented rich molecular profiles characterized by a variety of potential cancer biomarkers identified as metabolites, lipids, and proteins. Statistical classifiers built from the histologically validated molecular database allowed cancer prediction with high sensitivity (96.4%), specificity (96.2%), and overall accuracy (96.3%), as well as prediction of benign and malignant thyroid tumors and different histologic subtypes of lung cancer. Notably, our classifier allowed accurate diagnosis of cancer in marginal tumor regions presenting mixed histologic composition. Last, we demonstrate that the MasSpec Pen is suited for in vivo cancer diagnosis during surgery performed in tumor-bearing mouse models, without causing any observable tissue harm or stress to the animal. Our results provide evidence that the MasSpec Pen could potentially be used as a clinical and intraoperative technology for ex vivo and in vivo cancer diagnosis.
Collapse
Affiliation(s)
- Jialing Zhang
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - John Rector
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA.,Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, USA
| | - John Q Lin
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Jonathan H Young
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Marta Sans
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Nitesh Katta
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, USA
| | - Noah Giese
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Wendong Yu
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Chandandeep Nagi
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX 77030, USA
| | - James Suliburk
- Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jinsong Liu
- Department of Pathology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Alena Bensussan
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Rachel J DeHoog
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Kyana Y Garza
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Benjamin Ludolph
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Anna G Sorace
- Department of Internal Medicine, Dell Medical School, University of Texas at Austin, Austin, TX 78712, USA
| | - Anum Syed
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, USA
| | - Aydin Zahedivash
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, USA
| | - Thomas E Milner
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, USA
| | - Livia S Eberlin
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA.
| |
Collapse
|
23
|
Sans M, Feider CL, Eberlin LS. Advances in mass spectrometry imaging coupled to ion mobility spectrometry for enhanced imaging of biological tissues. Curr Opin Chem Biol 2018; 42:138-146. [PMID: 29275246 PMCID: PMC5828985 DOI: 10.1016/j.cbpa.2017.12.005] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [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] [Received: 09/04/2017] [Revised: 12/04/2017] [Accepted: 12/11/2017] [Indexed: 11/20/2022]
Abstract
Tissues present complex biochemical and morphological composition associated with their various cell types and physiological functions. Mass spectrometry (MS) imaging technologies are powerful tools to investigate the molecular information from biological tissue samples and visualize their complex spatial distributions. Coupling of gas-phase ion mobility spectrometry (IMS) technologies to MS imaging has been increasingly explored to improve performance for biological tissue imaging. This approach allows improved detection of low abundance ions and separation of isobaric molecular species, thus resulting in more accurate determination of the spatial distribution of molecular ions. In this review, we highlight recent advances in the field focusing on promising applications of these technologies for metabolite, lipid and protein tissue imaging.
Collapse
Affiliation(s)
- Marta Sans
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712, United States
| | - Clara L Feider
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712, United States
| | - Livia S Eberlin
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712, United States.
| |
Collapse
|
24
|
Calabrese AN, Jackson SM, Jones LN, Beckstein O, Heinkel F, Gsponer J, Sharples D, Sans M, Kokkinidou M, Pearson AR, Radford SE, Ashcroft AE, Henderson PJF. Topological Dissection of the Membrane Transport Protein Mhp1 Derived from Cysteine Accessibility and Mass Spectrometry. Anal Chem 2017; 89:8844-8852. [PMID: 28726379 PMCID: PMC5588088 DOI: 10.1021/acs.analchem.7b01310] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Accepted: 07/20/2017] [Indexed: 01/01/2023]
Abstract
Cys accessibility and quantitative intact mass spectrometry (MS) analyses have been devised to study the topological transitions of Mhp1, the membrane protein for sodium-linked transport of hydantoins from Microbacterium liquefaciens. Mhp1 has been crystallized in three forms (outward-facing open, outward-facing occluded with substrate bound, and inward-facing open). We show that one natural cysteine residue, Cys327, out of three, has an enhanced solvent accessibility in the inward-facing (relative to the outward-facing) form. Reaction of the purified protein, in detergent, with the thiol-reactive N-ethylmalemide (NEM), results in modification of Cys327, suggesting that Mhp1 adopts predominantly inward-facing conformations. Addition of either sodium ions or the substrate 5-benzyl-l-hydantoin (L-BH) does not shift this conformational equilibrium, but systematic co-addition of the two results in an attenuation of labeling, indicating a shift toward outward-facing conformations that can be interpreted using conventional enzyme kinetic analyses. Such measurements can afford the Km for each ligand as well as the stoichiometry of ion-substrate-coupled conformational changes. Mutations that perturb the substrate binding site either result in the protein being unable to adopt outward-facing conformations or in a global destabilization of structure. The methodology combines covalent labeling, mass spectrometry, and kinetic analyses in a straightforward workflow applicable to a range of systems, enabling the interrogation of changes in a protein's conformation required for function at varied concentrations of substrates, and the consequences of mutations on these conformational transitions.
Collapse
Affiliation(s)
| | | | | | - Oliver Beckstein
- Department of Physics, Arizona State University , Tempe, Arizona 85287-1504, United States
| | - Florian Heinkel
- Centre for High-Throughput Biology, University of British Columbia , Vancouver, British Columbia, Canada V6T 1Z4
| | - Joerg Gsponer
- Centre for High-Throughput Biology, University of British Columbia , Vancouver, British Columbia, Canada V6T 1Z4
| | | | - Marta Sans
- Hamburg Centre for Ultrafast Imaging, Institute for Nanostructure and Solid State Physics, Universität Hamburg , Hamburg 22761, Germany
| | - Maria Kokkinidou
- Hamburg Centre for Ultrafast Imaging, Institute for Nanostructure and Solid State Physics, Universität Hamburg , Hamburg 22761, Germany
| | - Arwen R Pearson
- Hamburg Centre for Ultrafast Imaging, Institute for Nanostructure and Solid State Physics, Universität Hamburg , Hamburg 22761, Germany
| | | | | | | |
Collapse
|
25
|
Sans M, Gharpure K, Tibshirani R, Zhang J, Liang L, Liu J, Young JH, Dood RL, Sood AK, Eberlin LS. Metabolic Markers and Statistical Prediction of Serous Ovarian Cancer Aggressiveness by Ambient Ionization Mass Spectrometry Imaging. Cancer Res 2017; 77:2903-2913. [PMID: 28416487 DOI: 10.1158/0008-5472.can-16-3044] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 01/10/2017] [Accepted: 04/05/2017] [Indexed: 02/06/2023]
Abstract
Ovarian high-grade serous carcinoma (HGSC) results in the highest mortality among gynecological cancers, developing rapidly and aggressively. Dissimilarly, serous borderline ovarian tumors (BOT) can progress into low-grade serous carcinomas and have relatively indolent clinical behavior. The underlying biological differences between HGSC and BOT call for accurate diagnostic methodologies and tailored treatment options, and identification of molecular markers of aggressiveness could provide valuable biochemical insights and improve disease management. Here, we used desorption electrospray ionization (DESI) mass spectrometry (MS) to image and chemically characterize the metabolic profiles of HGSC, BOT, and normal ovarian tissue samples. DESI-MS imaging enabled clear visualization of fine papillary branches in serous BOT and allowed for characterization of spatial features of tumor heterogeneity such as adjacent necrosis and stroma in HGSC. Predictive markers of cancer aggressiveness were identified, including various free fatty acids, metabolites, and complex lipids such as ceramides, glycerophosphoglycerols, cardiolipins, and glycerophosphocholines. Classification models built from a total of 89,826 individual pixels, acquired in positive and negative ion modes from 78 different tissue samples, enabled diagnosis and prediction of HGSC and all tumor samples in comparison with normal tissues, with overall agreements of 96.4% and 96.2%, respectively. HGSC and BOT discrimination was achieved with an overall accuracy of 93.0%. Interestingly, our classification model allowed identification of three BOT samples presenting unusual histologic features that could be associated with the development of low-grade carcinomas. Our results suggest DESI-MS as a powerful approach for rapid serous ovarian cancer diagnosis based on altered metabolic signatures. Cancer Res; 77(11); 2903-13. ©2017 AACR.
Collapse
Affiliation(s)
- Marta Sans
- Department of Chemistry, The University of Texas at Austin, Austin, Texas
| | - Kshipra Gharpure
- Department of Gynecologic Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Robert Tibshirani
- Departments of Biomedical Data Sciences and Statistics, Stanford University, Stanford, California
| | - Jialing Zhang
- Department of Chemistry, The University of Texas at Austin, Austin, Texas
| | - Li Liang
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jinsong Liu
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jonathan H Young
- Department of Chemistry, The University of Texas at Austin, Austin, Texas
| | - Robert L Dood
- Department of Gynecologic Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Anil K Sood
- Department of Gynecologic Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas. .,Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Livia S Eberlin
- Department of Chemistry, The University of Texas at Austin, Austin, Texas.
| |
Collapse
|
26
|
Pi-Boleda B, Sans M, Campos M, Nolis P, Illa O, Estévez JC, Branchadell V, Ortuño RM. Studies on Cycloalkane-Based Bisamide Organogelators: A New Example of Stochastic Chiral Symmetry-Breaking Induced by Sonication. Chemistry 2017; 23:3357-3365. [PMID: 28005300 DOI: 10.1002/chem.201604818] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 10/13/2016] [Indexed: 11/08/2022]
Abstract
Enantiomerically pure C16 -alkyl amides derived from cis and trans cycloalkane-1,2-dicarboxylic acids, respectively, have been synthesized and their behavior as organogelators has been investigated. These compounds include cis/trans diastereomeric cyclobutane and cyclohexane derivatives with the aim to explore the influence of the ring size as well as the relative configuration in their hierarchical self-assembly to form gels. High resolution 1 H NMR spectroscopy studies allowed the determination of the dynamics of the gelation process in [D8 ]toluene and the sol-gel transition temperature. The morphology and size of the aggregates have been investigated and results have shown that, in the case of cyclobutane derivatives, the cis/trans stereochemistry is not relevant for the gelation behavior and the properties of the soft-materials obtained, but it is remarkable for cyclohexane diamides, which are better organogelators. The four compounds produce chiral aggregates despite that two of them are meso achiral molecules. We show herein that this fact is an example of stochastic symmetry breaking induced by sonication. The self-assembly of these molecules has been modelled providing information and support about the structure and the chirality of the aggregates.
Collapse
Affiliation(s)
- Bernat Pi-Boleda
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Marta Sans
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - María Campos
- CIQUS (Centro Singular de Investigación en Química Biológica y Materiales Moleculares) y Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Pau Nolis
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, 08193, Cerdanyola del Vallès, Barcelona, Spain
| | - Ona Illa
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Juan Carlos Estévez
- CIQUS (Centro Singular de Investigación en Química Biológica y Materiales Moleculares) y Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Vicenç Branchadell
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Rosa M Ortuño
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| |
Collapse
|
27
|
Sans M, Illa O, Ortuño R. Organobridged silsesquioxanes based on cyclobutane diamines: influence of the stereochemistry on the morphology of the materials. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
28
|
Dignass A, Lindsay JO, Sturm A, Windsor A, Colombel JF, Allez M, d'Haens G, d'Hoore A, Mantzanaris G, Novacek G, Öresland T, Reinisch W, Sans M, Stange E, Vermeire S, Travis S, van Assche G. [Second European evidence-based consensus on the diagnosis and management of ulcerative colitis Part 2: Current management (Spanish version)]. Rev Gastroenterol Mex 2015; 80:32-73. [PMID: 25769217 DOI: 10.1016/j.rgmx.2014.10.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 10/23/2014] [Indexed: 02/06/2023]
Affiliation(s)
- A Dignass
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso.
| | | | - A Sturm
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - A Windsor
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - J-F Colombel
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - M Allez
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - G d'Haens
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - A d'Hoore
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - G Mantzanaris
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - G Novacek
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - T Öresland
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - W Reinisch
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - M Sans
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - E Stange
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - S Vermeire
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | - S Travis
- Contribuyeron por igual a este trabajo; Coordinadores del Consenso
| | | |
Collapse
|
29
|
Aguilera J, Favier I, Sans M, Mor À, Álvarez-Larena Á, Illa O, Gómez M, Ortuño RM. Synthesis of Chiral Functionalised Cyclobutylpyrrolidines and Cyclobutylamino Alcohols from (-)-(S)-Verbenone - Applications in the Stabilisation of Ruthenium Nanocatalysts. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403176] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
30
|
Da Luz J, López P, Kimura EM, Albuquerque DM, Costa FF, Sans M, Sonati MF. A new β⁰-thalassemia frameshift mutation [β 48 (-T)] in a Uruguayan family. Int J Lab Hematol 2012; 35:111-4. [PMID: 22898041 DOI: 10.1111/j.1751-553x.2012.01462.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 06/21/2012] [Indexed: 11/29/2022]
Abstract
We describe here a new frameshift mutation of β-thalassemia in a Uruguayan family with Italian ancestry [β48 (-T); HBB:c.146delT]. This frameshift results in formation of premature stop codon (TGA) 40 bp downstream and in a short unstable product that is degraded in the cell.
Collapse
Affiliation(s)
- J Da Luz
- Departamento de Genética, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay.
| | | | | | | | | | | | | |
Collapse
|
31
|
Sans M, Illa O, Ortuño RM. Stereoselective synthesis of all stereoisomers of orthogonally protected cyclobutane-1,2-diamine and some chemoselective transformations. Org Lett 2012; 14:2431-3. [PMID: 22545793 DOI: 10.1021/ol300689e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The four stereoisomers of protected cyclobutane-1,2-diamine have been prepared in an enantio- and diastereocontrolled manner through stereodivergent synthetic routes starting from a half-ester as a common chiral precursor. Orthogonal protection allows the chemoselective manipulation of both amino groups as shown in this work.
Collapse
Affiliation(s)
- Marta Sans
- Departament de Química, Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Barcelona, Spain
| | | | | |
Collapse
|
32
|
Sans M, Figueiro G, Ackermann E, Barreto I, Egaña A, Bertoni B, Poittevin-Gilmet E, Maytia D, Hidalgo PC. Mitochondrial DNA in Basque descendants from the city of Trinidad, Uruguay: Uruguayan- or Basque-like population? Hum Biol 2011; 83:55-70. [PMID: 21453004 DOI: 10.3378/027.083.0104] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Like other countries in the Americas, during its colonization Uruguay was the recipient of immigrants from several ethnic groups from Europe, as well as of enslaved Africans. After its independence in 1830, Basques were the first group of Europeans to arrive in the country. In this paper, we aim to contribute to the understanding of the process of integration of these migratory waves into the Uruguayan society. For that purpose, individuals of Basque origin from the city of Trinidad, Uruguay, were chosen to participate in this study. Particularly, we wanted to determine if Basque descendants in Uruguay remained relatively isolated or if they mixed with other ethnic groups. Mitochondrial DNA (mtDNA) of 60 self-identified Basque descendants, taken from a larger sample of subjects with Basque ancestors, was analyzed. The origin of mtDNA haplogroups was 77.8% European, 20.4% Amerindian, and 1.8% African, showing similar frequencies to other Uruguayan regions. Very few sequences showed a clear Basque origin, although other sources such as the Canary Islands are likely. Moreover, genetic distances clearly show that Basque descendants are genetically closer to other Uruguayan groups than to European populations, including Basques. It is possible to conclude that Basques and their descendants in the region of Trinidad did not remain isolated and that their marriage behavior was similar to that of other Uruguayan populations. However, to have a more accurate picture of the way Basques intermarried with other populations in Uruguay, new analyses are needed that take into account paternal lineages as well as biparental genetic markers.
Collapse
Affiliation(s)
- M Sans
- Department of Biological Anthropology, Facultad de Humanidades y Ciencias de la Educación, Universidad de la República, 11200 Montevideo, Uruguay
| | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Pifarré-Montaner P, Fernández-León A, de Juan R, del Ama-Salvador ME, Galán M, Gámez-Cenzano C, Sans M. [Impact of (18)F-FDG PET/CT on the therapeutic management in the initial staging of the esophageal cancer]. Rev Esp Med Nucl 2009; 28:101-105. [PMID: 19558949] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE The incidence of esophageal cancer has increased considerably over recent years, it now being the 6th most frequent cause of cancer-related death. Our study has aimed to compare the clinical value of PET/CT and CT scan in the initial staging of patients with esophageal cancer. MATERIAL AND METHODS Fifty nine patients (6 women) diagnosed of esophageal cancer were assessed retrospectively. All patients underwent diagnostic CT scan and PET/CT for initial staging within 3 to 15 days following clinical diagnosis. RESULTS PET/CT showed intracellular (18)F-FDG entrapment having pathological significance in all the tumors (100%), signs of locoregional lymph node infiltration (N1) in 34 and a total of 19 lesions consistent with metastasis (M1) in 14 patients (23.72%). The CT scan detected malignancy in 57 patients (96.6%), abnormal lymph node in 32 patients and 17 N1 in 12 patients (20.33%). In three cases, CT- PET detected synchronous esophageal lesion in staging studies for other neoplastic processes (lung and ear-nose-throat). CONCLUSION PET/CT showed a higher detection rate of primary malignant lesions, abnormal lymph nodes and distant metastases. A change in stage was only observed in two patients.
Collapse
Affiliation(s)
- P Pifarré-Montaner
- Unidad de PET, IDI, Hospital Universitario de Bellvitge, Barcelona, España.
| | | | | | | | | | | | | |
Collapse
|
34
|
Lamas S, Azuara D, de Oca J, Sans M, Farran L, Alba E, Escalante E, Rafecas A. Time course of necrosis/apoptosis and neovascularization during experimental gastric conditioning. Dis Esophagus 2008; 21:370-6. [PMID: 18477261 DOI: 10.1111/j.1442-2050.2007.00772.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Apoptosis, necrosis and neovascularization are three processes that occur during ischemic preconditioning in a range of organs. In the stomach, the effect of this preconditioning (the delay phenomenon) has helped to improve gastric vascularization prior to esophagogastric anastomosis after esophagectomy. Here we present a sequential study of the histological recovery of the gastric fundus and the phenomena of apoptosis, necrosis and neovascularization in an experimental model of partial gastric ischemia. Partial gastric devascularization was performed by ligature of the left gastric vessels in Sprague-Dawley rats. Rats were assigned to groups in accordance with their evaluation period: control, 1, 3, 6, 10, 15 and 21 days. Histological analysis, caspase-3 activity, DNA fragmentation and vascular endothelial cell proliferation (Ki-67) were measured in tissue samples after sacrifice. After 24 h of partial gastric ischemia, rates of apoptosis and necrosis were higher in the experimental groups than in controls. Tissue injury was higher 3 and 6 days post-ischemia. From day 10 after partial gastric ischemia, apoptosis and necrosis started to decrease, and on days 15 and 21 showed no differences in relation to controls. Neovascularization began between days 1 and 3, reaching its peak at 15 days after ischemia and coinciding with complete histological recovery. Both necrosis and apoptosis play a role in tissue injury during the first days after partial gastric ischemia. After 15 days, the evolution of both the histology and the neovascularization suggested that this is the optimal time for performing gastric transposition.
Collapse
Affiliation(s)
- S Lamas
- Department of Surgery, Hospital Universitari de Bellvitge-Institut d'Investigació Biomédica de Bellvitge (IDIBELL), Barcelona, Spain
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Farran L, Llop J, Sans M, Kreisler E, Miró M, Galan M, Rafecas A. Efficacy of enteral decontamination in the prevention of anastomotic dehiscence and pulmonary infection in esophagogastric surgery. Dis Esophagus 2008; 21:159-64. [PMID: 18269652 DOI: 10.1111/j.1442-2050.2007.00764.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Our aim in this study is to evaluate the efficacy of decontamination of the high digestive tract in reducing the incidence of anastomotic dehiscence, pulmonary infection and mortality after resective gastro-esophageal surgery. A prospective randomized and double-blinded study was conducted in patients undergoing total gastrectomy for gastric cancer and esophagectomy for esophageal cancer. Two groups were studied: group A patients were given erythromycin + gentamicine + nistatine sulfate orally; group B patients were given placebo. Mortality, incidence of anastomotic dehiscence and incidence of pulmonary infection were the end points evaluated. One hundred and nine consecutive patients were randomized. Eighteen (16.5%) were excluded. From the 91 patients who were evaluated, 42 (46.2%) received an esophagectomy and 49 (53.8%) had a total gastrectomy. Esophagectomies showed: a 0% rate of anastomotic dehiscence in group A and 12.5% in group B, P = 0.176; a pulmonary infection rate of 22.2% in group A and 29.1% in group B, P = 0.443; and mortality rate was 0% in group A and 12.5% in group B, P = 0.176. After gastrectomy, anastomotic dehiscence rate was 4.5% in group A and 0% in group B, P = 0.449; pulmonary infection rate was 4.5% in group A and 11.1% in group B, P = 0.387 and mortality was 9% in group A and 0% in group B, P = 0.196. Decontamination protocol does not help in decreasing the incidence of anastomotic dehiscence, pulmonary infection and mortality in the present study. Nevertheless, there seems to be a tendency to low pulmonary infection after gastrectomy and esophagectomy and to improve the incidence of anastomotic dehiscence after esophagectomy. Further studies are needed to re-evaluate these findings.
Collapse
Affiliation(s)
- L Farran
- Surgery, Hospital Universitari de Bellvitge, Barcelona, Spain.
| | | | | | | | | | | | | |
Collapse
|
36
|
Alvarez-Lobos M, Arostegui JI, Sans M, Tassies D, Piu J, Reverter JC, Pique JM, Yagüe J, Panés J. Combined type-1 plasminogen activator inhibitor and NOD2/CARD15 genotyping predicts complicated Crohn's disease behaviour. Aliment Pharmacol Ther 2007; 25:429-40. [PMID: 17269998 DOI: 10.1111/j.1365-2036.2006.03208.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 01/18/2023]
Abstract
BACKGROUND NOD2/CARD15 gene variants have not been universally associated with stricturing behaviour in Crohn's disease. Other behaviour modifying genes could explain these results. AIM To study the combined influence of NOD2/CARD15 variants and 4G/4G genotype of type-1 plasminogen activator inhibitor (PAI-1) gene on Crohn's disease behaviour. METHODS One hundred and seventy Crohn's disease patients were studied prospectively, with a mean follow-up of 7+/- 6 years. Disease behaviour was registered by using two criteria: the Vienna classification and a non-hierarchical classification based on the behavioural Vienna categories. RESULTS In the multivariate analysis for stricturing behaviour according to the Vienna categories, only absence of colonic disease (OR, 4.0; 95% CI: 1.49-11.1; P = 0.006) was an independent predictive factor. However, in the multivariate analysis for stricturing disease applying a non-hierarchical criteria, ileal disease (OR, 4.19; 95% CI: 1.30-13.5; P = 0.01), and carrying both NOD2/CARD15 variants and the 4G/4G PAI-1 genotype (OR, 5.02; 95% CI: 1.44-17.48; P = 0.01) were independent predictive factors. In the multivariate analysis for penetrating behaviour, the 4G/4G PAI-1 (OR, 3.10; 95% CI: 1.54-6.23; P = 0.001) and male sex (OR, 2.44; 95% CI: 1.30-4.60; P = 0.005) were independent predictive factors irrespective of criteria applied. CONCLUSIONS Combined PAI-1 and NOD2/CARD15 genotyping predict complicated Crohn's disease. Patients with these variants could benefit from early interventions.
Collapse
Affiliation(s)
- M Alvarez-Lobos
- Department of Gastroenterology, Hospital Clinic, CIBER-HEPAD, Barcelona, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Gironella M, Iovanna JL, Sans M, Gil F, Peñalva M, Closa D, Miquel R, Piqué JM, Panés J. Anti-inflammatory effects of pancreatitis associated protein in inflammatory bowel disease. Gut 2005; 54:1244-53. [PMID: 15870231 PMCID: PMC1774660 DOI: 10.1136/gut.2004.056309] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIMS Increased pancreatitis associated protein (PAP) mRNA has been reported in active inflammatory bowel disease (IBD). The aims of the current study were to characterise PAP production in IBD and the effects of PAP on inflammation. PATIENTS AND METHODS Serum PAP levels were determined in healthy controls (n = 29), inflammatory controls (n = 14), and IBD patients (n = 171). Ex vivo PAP secretion in intestinal tissue was measured in 56 IBD patients and 13 healthy controls. Cellular origin of PAP was determined by immunohistochemistry. The effects of exogenous PAP on nuclear factor kappaB (NFkappaB) activation, proinflammatory cytokine production, and endothelial adhesion molecule expression were also analysed ex vivo. RESULTS Patients with active IBD had increased serum PAP levels compared with controls, and these levels correlated with clinical and endoscopic disease severity. Ex vivo intestinal PAP synthesis was increased in active IBD and correlated with endoscopic and histological severity of inflammatory lesions. PAP localised to colonic Paneth cells. Incubation of mucosa from active Crohn's disease with PAP dose dependently reduced proinflammatory cytokines secretion. PAP prevented TNF-alpha induced NFkappaB activation in monocytic, epithelial, and endothelial cells and reduced proinflammatory cytokine mRNA levels and adhesion molecule expression. CONCLUSIONS PAP is synthesised by Paneth cells and is overexpressed in colonic tissue of active IBD. PAP inhibits NFkappaB activation and downregulates cytokine production and adhesion molecule expression in inflamed tissue. It may represent an anti-inflammatory mechanism and new therapeutic strategy in IBD.
Collapse
MESH Headings
- Analysis of Variance
- Antigens, Neoplasm/blood
- Antigens, Neoplasm/pharmacology
- Biological Transport
- Biomarkers, Tumor/blood
- Biomarkers, Tumor/metabolism
- Biomarkers, Tumor/pharmacology
- Case-Control Studies
- Cell Adhesion Molecules/metabolism
- Cell Nucleus/metabolism
- Cells, Cultured
- Colitis/blood
- Colitis/immunology
- Colitis/pathology
- Colitis, Ulcerative/blood
- Colitis, Ulcerative/immunology
- Colitis, Ulcerative/pathology
- Crohn Disease/blood
- Crohn Disease/immunology
- Crohn Disease/pathology
- Humans
- Inflammatory Bowel Diseases/blood
- Inflammatory Bowel Diseases/immunology
- Inflammatory Bowel Diseases/pathology
- Interleukins/immunology
- Intestinal Mucosa/immunology
- Intestinal Mucosa/metabolism
- Intestinal Mucosa/pathology
- Lectins, C-Type/blood
- NF-kappa B/metabolism
- Pancreatitis-Associated Proteins
- Paneth Cells/metabolism
- RNA, Messenger/analysis
- Tumor Necrosis Factor-alpha/immunology
Collapse
Affiliation(s)
- M Gironella
- Gastroenterology Department, Institut de Malalties Digestives, Hospital Clínic, Villarroel 170 08036 Barcelona, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Danese S, Sans M, Gasbarrini A. CD40 antisense based strategy for inflammatory bowel disease: shutting down multiple cellular communication systems. Gut 2005; 54:891-2. [PMID: 15888807 PMCID: PMC1774517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- S Danese
- Department of Internal Medicine, Catholic University School of Medicine, Rome, Italy
| | - M Sans
- Division of Gastroenterology, Hospital Clinic, Barcelona, Spain
| | - A Gasbarrini
- Department of Internal Medicine, Catholic University School of Medicine, Rome, Italy
| |
Collapse
|
39
|
Alexakhin VY, Alexandrov Y, Alexeev GD, Amoroso A, Badełek B, Balestra F, Ball J, Baum G, Bedfer Y, Berglund P, Bernet C, Bertini R, Birsa R, Bisplinghoff J, Bradamante F, Bravar A, Bressan A, Burtin E, Bussa MP, Cerini L, Chapiro A, Cicuttin A, Colantoni M, Colavita AA, Costa S, Crespo ML, d'Hose N, Dalla Torre S, Dasgupta SS, De Masi R, Dedek N, Denisov OY, Dhara L, Diaz Kavka V, Dolgopolov AV, Donskov SV, Dorofeev VA, Doshita N, Duic V, Dünnweber W, Efremov A, Ehlers J, Eversheim PD, Eyrich W, Fabro M, Faessler M, Fauland P, Ferrero A, Ferrero L, Finger M, Finger M, Fischer H, Franz J, Friedrich JM, Frolov V, Fuchs U, Garfagnini R, Gautheron F, Gavrichtchouk OP, Gerassimov S, Geyer R, Giorgi M, Gobbo B, Goertz S, Grajek OA, Grasso A, Grube B, Grünemaier A, Gustafsson K, Hannappel J, von Harrach D, Hasegawa T, Hedicke S, Heinsius FH, Hinterberger F, von Hodenberg M, Horikawa N, Horikawa S, Ijaduola RB, Ilgner C, Ishimoto S, Iwata T, Jahn R, Janata A, Joosten R, Jouravlev NI, Kabuss E, Kalinnikov V, Kang D, Karstens F, Kastaun W, Ketzer B, Khaustov GV, Khokhlov YA, Kisselev Y, Klein F, Koivuniemi JH, Kolosov VN, Komissarov EV, Kondo K, Königsmann K, Konoplyannikov AK, Konorov I, Konstantinov VF, Korentchenko AS, Korzenev A, Kotzinian AM, Koutchinski NA, Kowalik K, Kravchuk NP, Krivokhizhin GV, Kroumchtein ZV, Kuhn R, Kunne F, Kurek K, Lamanna M, Le Goff JM, Leberig M, Lichtenstadt J, Maggiora A, Maggiora M, Magnon A, Mallot GK, Manuilov IV, Marchand C, Marroncle J, Martin A, Marzec J, Matsuda T, Maximov AN, Medved KS, Meyer W, Mielech A, Mikhailov YV, Moinester MA, Nähle O, Nassalski J, Neyret DP, Nikolaenko VI, Nozdrin AA, Obraztsov VF, Olshevsky AG, Ostrick M, Padee A, Pagano P, Panebianco S, Panzieri D, Paul S, Pereira HD, Peshekhonov DV, Peshekhonov VD, Piragino G, Platchkov S, Platzer K, Pochodzalla J, Polyakov VA, Popov AA, Pretz J, Rebourgeard PC, Reicherz G, Reymann J, Rozhdestvensky AM, Rondio E, Sadovski AB, Saller E, Samoylenko VD, Sandacz A, Sans M, Sapozhnikov MG, Savin IA, Schiavon P, Schmidt T, Schmitt H, Schmitt L, Shishkin AA, Siebert H, Sinha L, Sissakian AN, Skachkova A, Slunecka M, Smirnov GI, Sugonyaev VP, Stinzing F, Sulej R, Takabayashi N, Tchalishev VV, Tessarotto F, Teufel A, Thers D, Tkatchev LG, Toeda T, Tretyak VI, Trousov S, Vlassov NV, Webb R, Weise E, Wiesmann M, Windmolders R, Wirth S, Wiślicki W, Zanetti AM, Zaremba K, Zhao J, Ziegler R, Zvyagin A. First measurement of the transverse spin asymmetries of the deuteron in semi-inclusive deep inelastic scattering. Phys Rev Lett 2005; 94:202002. [PMID: 16090237 DOI: 10.1103/physrevlett.94.202002] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2005] [Indexed: 05/03/2023]
Abstract
First measurements of the Collins and Sivers asymmetries of charged hadrons produced in deep-inelastic scattering of muons on a transversely polarized 6LiD target are presented. The data were taken in 2002 with the COMPASS spectrometer using the muon beam of the CERN SPS at 160 GeV/c. The Collins asymmetry turns out to be compatible with zero, as does the measured Sivers asymmetry within the present statistical errors.
Collapse
Affiliation(s)
- V Yu Alexakhin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Lusiardo A, Barreto I, Hidalgo PC, Bonilla C, Bertoni B, Portas M, Sans M. Consanguinity in two Uruguayan cities: historical evolution and characteristics (1800-1994). Ann Hum Biol 2004; 31:513-25. [PMID: 15739381 DOI: 10.1080/03014460412331281737] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND Information about consanguinity in Uruguay is scarce and limited to the end of the 20th century. AIM To determine the frequency and characteristics of consanguineous marriages, as well as chronological trends, in two Uruguayan cities over almost two centuries. SUBJECTS AND METHODS We analysed 28,393 Roman Catholic Church marriage records and Diocesan consanguinity dispensations belonging to the cities of Melo (Northeast), and Montevideo (South), for the period 1800--1994. RESULTS 633 (2.23%) marriages were consanguineous. Among them, first cousin marriages were the most common (58.8% of all consanguineous marriages, including double consanguineous), especially those where the bride and groom were related through their maternal side. During the first decades of the 19th century both regions showed low levels of consanguinity. Consanguinity reached its maximum during the mid-1800s and decreased significantly throughout the 20th century. The overall mean coefficients of inbreeding were moderate in both cases, being greater in the Northeast (alpha=0.00165) than in the South (alpha = 0.00089). CONCLUSIONS The low level of consanguinity as well as the structure of consanguineous marriages (distribution by degrees) is similar to that found in other southern South American countries. Temporal trends are similar to those found in industrialized regions in Europe, with maximum inbreeding levels during the middle-late 19th century; however, the clear predominance of first cousin unions, differs from most of the data for European countries. Small differences between the two cities can be related to diverse facts, such as socio-economic conditions, ethnic origin, immigration, and sampling.
Collapse
Affiliation(s)
- A Lusiardo
- Sección de Antropologia Biológica, Facultad de Humanidades y Ciencias de la Educación, Universidad de la República, Magallanes 1577, 11200 Montevideo, Uruguay.
| | | | | | | | | | | | | |
Collapse
|
41
|
Danese S, Scaldaferri F, Papa A, Pola R, Sans M, Gasbarrini G, Pola P, Gasbarrini A. Platelets: new players in the mucosal scenario of inflammatory bowel disease. Eur Rev Med Pharmacol Sci 2004; 8:193-8. [PMID: 15638229] [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] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Besides their classical haemostatic task, platelets are now recognized as novel cells deeply involved in inflammation. Compelling evidence support their role as active player in mucosal tissue injury that occurs in Crohn's disease and ulcerative colitis. In both forms of inflammatory bowel disease platelets contribute to microvascular endothelial activation and recruitment of inflammatory cells, thus fostering and amplifying mucosal inflammation.
Collapse
Affiliation(s)
- S Danese
- Department of Internal Medicine, Catholic University of Rome - Rome (Italy)
| | | | | | | | | | | | | | | |
Collapse
|
42
|
Affiliation(s)
- S Danese
- Department of Internal Medicine, Catholic University, Rome, Italy
| | | | | |
Collapse
|
43
|
Sans M, Tàssies D, Pellisé M, Espinosa G, Quintó L, Piqué JM, Reverter JC, Panés J. The 4G/4G genotype of the 4G/5G polymorphism of the type-1 plasminogen activator inhibitor (PAI-1) gene is a determinant of penetrating behaviour in patients with Crohn's disease. Aliment Pharmacol Ther 2003; 17:1039-47. [PMID: 12694086 DOI: 10.1046/j.1365-2036.2003.01536.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [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: 01/22/2023]
Abstract
BACKGROUND Crohn's disease is a heterogeneous disorder with polygenic inheritance. AIM To assess the effect of the 4G/5G polymorphism of the type-1 plasminogen activator inhibitor (PAI-1) gene, the major inhibitor of fibrinolysis, on Crohn's disease susceptibility and phenotype. METHODS One hundred and fifty-seven patients with Crohn's disease and 350 controls were included prospectively. Medical records were reviewed to determine changes in the Crohn's disease phenotype. The 4G/5G polymorphism was assessed by polymerase chain reaction techniques. RESULTS The frequencies of the 4G/4G, 4G/5G and 5G/5G genotypes were similar in patients with Crohn's disease and controls. The 4G/4G genotype (P < 0.0001; odds ratio, 4.84) and male sex (P = 0.009; odds ratio, 2.63) were independent risk factors for penetrating behaviour in Crohn's disease. Most Crohn's disease patients had a non-penetrating phenotype at diagnosis. The probability of development of a penetrating phenotype within 5 years of diagnosis was higher in patients with the 4G/4G genotype (72% vs. 19%, P < 0.0001). CONCLUSIONS The 4G/4G genotype of the PAI-1 gene does not influence Crohn's disease susceptibility, but increases by five-fold the probability of penetrating behaviour. Most patients with the 4G/4G genotype have a non-penetrating phenotype at diagnosis, but develop a penetrating behaviour within 5 years. Genotyping the 4G/5G polymorphism may be useful for the identification of a sub-group of patients with aggressive Crohn's disease, who might benefit from specific therapy.
Collapse
Affiliation(s)
- M Sans
- Department of Gastroenterology, Institut de Malalties Digestives, Hospital Clínic, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Panés J, de Lacy AM, Sans M, Soriano A, Piqué JM. [Frequent Internet use among Catalan patients with inflammatory bowel disease]. Gastroenterol Hepatol 2002; 25:306-9. [PMID: 11985800 DOI: 10.1016/s0210-5705(02)79024-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
UNLABELLED No data are available on the use of the Internet by Spanish patients with chronic diseases. AIM To determine the extent to which patients with inflammatory bowel disease (IBD) in Barcelona (Spain) make use of the Internet and the relationship between Internet use and demographic characteristics. METHOD A questionnaire on Internet use was administered to 200 patients attending an information session on IBD organized by the Gastroenterology Department of a university referral hospital in the city of Barcelona. RESULTS Replies were received from 86% of those surveyed. The mean age was 40 years and 60% were women. Sixty-eight percent had home computers and 49% had an Internet connection. Forty-four percent sporadically or regularly obtained information on IBD from the web. A positive correlation was found between availability and Internet use and young age and higher educational level. No differences were found between men and women. Eighty-four percent expressed interest in having a web site on IBD supported by the physicians of their referral center and 65% were prepared to pay a subscription for this service. CONCLUSION Patients with IBD from Barcelona frequently looked for information on their disease on the Internet and were receptive to initiatives concerning electronic information from physicians of their local referral center.
Collapse
Affiliation(s)
- J Panés
- Unidad de Enfermedad Inflamatoria Intestinal. Servicio de Gastroenterología. Institut de Malalties Digestives. Hospital Clínic. Universidad de Barcelona. Spain.
| | | | | | | | | |
Collapse
|
45
|
Abstract
AIM To investigate the prevalence of immunization against hepatitis A virus (HAV) in persons with hepatitis C virus (HCV) infection, in order to determine who should be vaccinated for the former. DESIGN Descriptive, cross-sectional study. SETTING Urban health center serving 12 000 inhabitants. PARTICIPANTS Patients older than 14 years positive for HCV infection. MAIN MEASURES VARIABLES presence of chronic liver disease, serological indications of hepatitis B, A, and immune deficiency virus (HIV) infection, vaccination for hepatitis B. RESULTS A total of 134 persons (70.9% men and 29.1% women) comprised the sample of patients positive for HCV infection. Mean age was 41.75 years (SD, 16.55 years). Nearly all patients (93.3%) had chronic liver disease, 56.7% were intravenous drug users, 56% were positive for Hbc antibodies and 32.8% were positive for HIV. Serological testing for HAV was done in 75 patients (56%); the result was positive in 86.7%. Mean age in this subgroup was 50.4 years (SD, 17.8 years). In the HAV-negative subgroup, mean age was 36.6 years (SD, 15 years; P=.02). Serological testing for HAV could not be done in 44% of the patients: 33.6% did not respond to attempts to contact them by telephone or in writing, 6% were temporarily away from home, and 1 patient declined to be tested. The response to requests to obtain blood samples was better in women (66.7%), HIV-negative patients (34.7%), persons who were not intravenous drug users (43.3%) and persons with chronic liver disease (60%). CONCLUSIONS In persons younger than 40 years, the proportion of seronegative individuals is similar to that in the general population. Vaccination should be considered for all patients positive for HCV infection. In persons older than 40 years with chronic liver disease, the decision to vaccinate for HAV should be made in the light of serological findings.
Collapse
Affiliation(s)
- M Sans
- Especialistas en Medicina de Familia y Comunitaria, El Prat de Llobregat, Unidad Docente de Medicina de Familia y Comunitaria Costa de Ponent, Barcelona, Spain
| | | | | | | | | | | |
Collapse
|
46
|
Sans M, Kawachi S, Soriano A, Palacín A, Morise Z, Granger DN, Piqué JM, Grisham MB, Panés J. Brain endothelial adhesion molecule expression in experimental colitis. Microcirculation 2001. [PMID: 11379790 DOI: 10.1080/713774022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
OBJECTIVES 1) To determine if endothelial expression of adhesion molecules involved in leukocyte recruitment is increased in the brain and other organs in four different models of experimental colitis, and 2) to investigate whether leukocyte infiltration occurs in the brain of colitic animals. METHODS Endothelial vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) expression was quantified, using the dual radiolabeled antibody technique in rats with trinitrobenzenesulfonic acid (TNBS)-induced colitis, in mice with dextran sulfate sodium (DSS)-induced colitis, in SCID mice reconstituted with CD45RBhigh T-cells, and in IL-10-/- mice. Leukocyte infiltration in the brain of TNBS-induced colitic rats was assessed by myeloperoxidase activity and immunohistochemical staining with anti-CD45 monoclonal antibody. RESULTS Marked upregulation of brain endothelial VCAM-1 (2- to 5.5-fold) was consistently found in colitic animals in the four models studied. Brain VCAM-1 strongly correlated with colon VCAM-1 and colon weight. By contrast, upregulation of brain ICAM-1 in colitic animals was only observed in the CD45RBhigh transfer (3-fold) and the TNBS-induced (1.5-fold models). Heart and muscle VCAM-1 and ICAM-1 were not upregulated in colitic animals in the majority of models studied. There was no leukocyte infiltration into the brain of TNBS-induced colitic rats. CONCLUSIONS Our study demonstrates a marked and specific upregulation of endothelial VCAM-1 in the brain of colitic animals. This activation of cerebral endothelial cells was not associated with an infiltration of leukocytes into brain tissue.
Collapse
Affiliation(s)
- M Sans
- Department of Gastroenterology, Hospital Clínic, IDIBAPS, Barcelona, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Forns X, Ampurdanès S, Sanchez-Tapias JM, Guilera M, Sans M, Sánchez-Fueyo A, Quintó L, Joya P, Bruguera M, Rodés J. Long-term follow-up of chronic hepatitis C in patients diagnosed at a tertiary-care center. J Hepatol 2001; 35:265-71. [PMID: 11580150 DOI: 10.1016/s0168-8278(01)00088-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [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: 12/13/2022]
Abstract
BACKGROUND/AIMS The natural history of chronic hepatitis C (HCV) is not completely understood. This study was aimed to evaluate the long-term outcome of the disease over a prolonged period of time and to identify factors associated with progression. METHODS One hundred and sixteen patients with non-cirrhotic chronic non-A, non-B hepatitis consecutively diagnosed at a tertiary hospital between 1971 and 1977 were followed until December 1998 or until death. Patients with significant alcohol intake were excluded from the study. Variables obtained at the time of diagnosis, including epidemiological, clinical, laboratory, and histological data were recorded to determine risk factors associated with the development of liver cirrhosis and hepatic decompensation. RESULTS Based on complete follow-up data, the development of liver cirrhosis and hepatic decompensation was evaluated in 94 and 114 of the 116 patients, respectively. Thirty-seven (39.3%) of 94 patients developed liver cirrhosis; an aspartate aminotransferase (AST) value higher than 70 IU/L was associated with development of cirrhosis (odds ratio (OR) 4.22, 95% CI 1.3-13.8). Hepatic decompensation occurred in 12 (10.5%) of 114 patients, its cumulative probability being 2.8% at 10 years, 5.2% at 15 years and 19.8% at 20 years. The only factor independently associated to the development of hepatic decompensation was the presence of fibrosis (stage 2 or 3) in the initial liver biopsy (OR 4.1, IC 95% 1.22-13.9). Liver-related death occurred only in seven (6%) of 114 patients. In comparison with the 116 patients diagnosed in the 1970's, patients with chronic hepatitis C diagnosed in 1999 were younger, more often asymptomatic, had lower AST and alanine aminotransferase (ALT) values and had significantly lower grade and stage histological scores. CONCLUSIONS In summary, chronic hepatitis C had a high rate of progression to liver cirrhosis over a prolonged follow-up. However, this might be related to the fact that two decades ago the diagnosis was made at a significantly more advanced stage of the disease. Patients at high risk of progression can be identified by biochemical and histological variables at the time of diagnosis.
Collapse
Affiliation(s)
- X Forns
- Department of Medicine, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clinic, Universitat de Barcelona, Catalonia, Spain.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Bru C, Sans M, Defelitto MM, Gilabert R, Fuster D, Llach J, Lomeña F, Bordas JM, Piqué JM, Panés J. Hydrocolonic sonography for evaluating inflammatory bowel disease. AJR Am J Roentgenol 2001; 177:99-105. [PMID: 11418406 DOI: 10.2214/ajr.177.1.1770099] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.4] [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: 01/16/2023]
Abstract
OBJECTIVE The purpose of our study was to compare the usefulness of hydrocolonic sonography and (99m)Tc-hexamethylpropyleneamine oxime (HMPAO)--labeled leukocyte scintigraphy in the examination of patients with inflammatory bowel disease, using precise sonographic criteria of bowel involvement. SUBJECTS AND METHODS Sixty-eight consecutive patients with active inflammatory bowel disease (34 ulcerative colitis and 34 Crohn's disease), 12 with inactive inflammatory bowel disease, and 10 control subjects were prospectively studied. Patients with active disease underwent clinical assessment, hydrocolonic sonography, scintigraphy, and colonoscopy within 72 hr, whereas patients with inactive disease and control subjects underwent clinical examination and hydrocolonic sonography. RESULTS Involvement of a colonic segment by active inflammatory bowel disease was best defined by mucosal thickness greater than 1.5 mm, bowel wall thickness greater than 4 mm, mucosal irregularity, or the absence of haustra; and involvement of the terminal ileum by bowel wall thickness greater than 4 mm. Using these criteria, hydrocolonic sonography had 100% sensitivity for identifying patients with active inflammatory bowel disease and a greater overall accuracy (87%) than scintigraphy (77%) in the assessment of disease extension. In addition, strong correlation was shown between a hydrocolonic sonography activity index and clinical and endoscopic activity indexes. CONCLUSION This prospective study provides precise sonographic criteria for the definition of bowel involvement by active inflammatory bowel disease. Hydrocolonic sonography has a greater accuracy than scintigraphy for assessing disease extension and activity. Therefore, hydrocolonic sonography should be considered a first-choice technique to complete the study of inflammatory bowel disease after confirmation of the diagnosis by histology.
Collapse
Affiliation(s)
- C Bru
- Ultrasonography Unit, Centre de Diagnòstic per la Imatge, Hospital Clínic, Villarroel 170, 08036 Barcelona, Spain
| | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Sans M, Kawachi S, Soriano A, Palacín A, Morise Z, Granger DN, Piqué JM, Grisham MB, Panés J. Brain endothelial adhesion molecule expression in experimental colitis. Microcirculation 2001; 8:105-14. [PMID: 11379790] [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: 02/20/2023]
Abstract
OBJECTIVES 1) To determine if endothelial expression of adhesion molecules involved in leukocyte recruitment is increased in the brain and other organs in four different models of experimental colitis, and 2) to investigate whether leukocyte infiltration occurs in the brain of colitic animals. METHODS Endothelial vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) expression was quantified, using the dual radiolabeled antibody technique in rats with trinitrobenzenesulfonic acid (TNBS)-induced colitis, in mice with dextran sulfate sodium (DSS)-induced colitis, in SCID mice reconstituted with CD45RBhigh T-cells, and in IL-10-/- mice. Leukocyte infiltration in the brain of TNBS-induced colitic rats was assessed by myeloperoxidase activity and immunohistochemical staining with anti-CD45 monoclonal antibody. RESULTS Marked upregulation of brain endothelial VCAM-1 (2- to 5.5-fold) was consistently found in colitic animals in the four models studied. Brain VCAM-1 strongly correlated with colon VCAM-1 and colon weight. By contrast, upregulation of brain ICAM-1 in colitic animals was only observed in the CD45RBhigh transfer (3-fold) and the TNBS-induced (1.5-fold models). Heart and muscle VCAM-1 and ICAM-1 were not upregulated in colitic animals in the majority of models studied. There was no leukocyte infiltration into the brain of TNBS-induced colitic rats. CONCLUSIONS Our study demonstrates a marked and specific upregulation of endothelial VCAM-1 in the brain of colitic animals. This activation of cerebral endothelial cells was not associated with an infiltration of leukocytes into brain tissue.
Collapse
Affiliation(s)
- M Sans
- Department of Gastroenterology, Hospital Clínic, IDIBAPS, Barcelona, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Sans M, Salas A, Soriano A, Prats N, Gironella M, Pizcueta P, Elena M, Anderson DC, Piqué JM, Panés J. Differential role of selectins in experimental colitis. Gastroenterology 2001; 120:1162-72. [PMID: 11266380 DOI: 10.1053/gast.2001.23252] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [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: 12/31/2022]
Abstract
BACKGROUND AND AIMS The role of selectins in experimental colitis remains unknown. The aims of this study were to characterize the time-course expression of selectins in trinitrobenzene sulfonic acid (TNBS)-induced colitis, the functional role of selectins in colonic leukocyte-endothelial cell interactions, and the therapeutic usefulness of selectin blockade in this model. METHODS Control and TNBS-induced colitic rats were studied. Expression of P- and E-selectin was assessed by the radiolabeled antibody technique, and L-selectin by flow cytometry. Leukocyte-endothelial cell interactions were studied in colonic venules by using intravital microscopy under basal conditions and after P-, E-, or L-selectin immunoblockade. Additional groups of animals were treated with anti-P-selectin antibody, a nonbinding antibody, or dexamethasone, for 7 days. RESULTS P-selectin and E-selectin expression were markedly up-regulated in colitic rats. Increased leukocyte rolling was abrogated by anti-P-selectin, but only attenuated by anti-E- or anti-L-selectin antibodies. Only pretreatment with anti-P- selectin decreased leukocyte adhesion. Animals chronically treated with dexamethasone, but not with anti- P-selectin, had significantly lower macroscopic and histologic damage scores, colon weight, and myeloperoxidase (MPO) activity than those treated with nonbinding antibody. CONCLUSIONS P-selectin plays a key role on leukocyte rolling and its blockade attenuates leukocyte adhesion in TNBS-induced colitis. However, treatment with an anti-P-selectin antibody does not significantly improve colitis.
Collapse
Affiliation(s)
- M Sans
- Department of Gastroenterology, Institut de Malalties Digestives, Hospital Clínic, Institut d'Investigacions Biomèdiques August Pi i Sunyer, University of Barcelona, Barcelona, Catalonia, Spain
| | | | | | | | | | | | | | | | | | | |
Collapse
|