1
|
Campbell DR, Sakai AK, Weller SG, Culley TM, Dunbar‐Wallis AK, Andres AM, Wong TG, Dang T, Au B, Ku M, Marcantonio AR, Ngo PJ, Nguyen AA, Tran MH, Tran Q. Genetic potential for changes in breeding systems: Predicted and observed trait changes during artificial selection for male and female allocation in a gynodioecious species. Am J Bot 2022; 109:1918-1938. [PMID: 36380502 PMCID: PMC9828115 DOI: 10.1002/ajb2.16096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 09/08/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
PREMISE Evolution of separate sexes from hermaphroditism often proceeds through gynodioecy, but genetic constraints on this process are poorly understood. Genetic (co-)variances and between-sex genetic correlations were used to predict evolutionary responses of multiple reproductive traits in a sexually dimorphic gynodioecious species, and predictions were compared with observed responses to artificial selection. METHODS Schiedea (Caryophyllaceae) is an endemic Hawaiian lineage with hermaphroditic, gynodioecious, subdioecious, and dioecious species. We measured genetic parameters of Schiedea salicaria and used them to predict evolutionary responses of 18 traits in hermaphrodites and females in response to artificial selection for increased male (stamen) biomass in hermaphrodites or increased female (carpel, capsule) biomass in females. Observed responses over two generations were compared with predictions in replicate lines of treatments and controls. RESULTS In only two generations, both stamen biomass in hermaphrodites and female biomass in females responded markedly to direct selection, supporting a key assumption of models for evolution of dioecy. Other biomass traits, pollen and ovule numbers, and inflorescence characters important in wind pollination evolved indirectly in response to selection on sex allocation. Responses generally followed predictions from multivariate selection models, with some responses unexpectedly large due to increased genetic correlations as selection proceeded. CONCLUSIONS Results illustrate the power of artificial selection and utility of multivariate selection models incorporating sex differences. They further indicate that pollen and ovule numbers and inflorescence architecture could evolve in response to selection on biomass allocation to male versus female function, producing complex changes in plant phenotype as separate sexes evolve.
Collapse
Affiliation(s)
- Diane R. Campbell
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| | - Ann K. Sakai
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| | - Stephen G. Weller
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| | - Theresa M. Culley
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
- Department of Biological SciencesUniversity of CincinnatiCincinnatiOH45221USA
| | - Amy K. Dunbar‐Wallis
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
- Department of Ecology and Evolutionary BiologyUniversity of ColoradoBoulderCO80309USA
| | - Allen M. Andres
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| | - Tiffany G. Wong
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| | - Tam Dang
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| | - Bryan Au
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| | - Mickey Ku
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| | - Andrea R. Marcantonio
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| | - Paul J. Ngo
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| | - Andrew A. Nguyen
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
- Department of Gastroenterology and HepatologyKaiser Permanente WashingtonSeattleWA98112USA
| | - My Hanh Tran
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| | - Quoc‐Phong Tran
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineCA92697USA
| |
Collapse
|
2
|
Keane C, Hamad N, Barraclough A, Lee YY, Talaulikar D, Ku M, Wight J, Tatarczuch M, Swain F, Gregory GP. Diagnosis and management of primary central nervous system lymphoma: a Consensus Practice Statement from the Australasian Lymphoma Alliance. Intern Med J 2021; 52:1624-1632. [PMID: 34927329 DOI: 10.1111/imj.15658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 10/24/2021] [Accepted: 12/05/2021] [Indexed: 11/28/2022]
Abstract
Primary central nervous system lymphoma is a clinicopathological disease entity that accounts for 1 % of all non-Hodgkin lymphoma (NHL). Advanced patient age, adverse disease biology and complexities of diagnosis and treatment render outcomes markedly inferior to systemic NHL. Despite this, an increasing evidence base including limited randomised controlled clinical trial data is informing optimal therapeutic strategies with methotrexate-based induction chemotherapy schedules and intensified consolidation in selected patients. This practice statement represents an evidence-based review of the literature and has been devised to assist healthcare professionals in the diagnosis and management of this disease. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- C Keane
- Division of Cancer Services, Princess Alexandra Hospital, Brisbane, Australia.,University of Queensland, Brisbane, Australia
| | - N Hamad
- Department of Haematology, St Vincent's Hospital Sydney, Australia.,School of Medicine, Sydney, University of Notre Dame, Australia.,St Vincent's Clinical School, Sydney, University of New South, UK
| | - A Barraclough
- Department of Haematology, Fiona Stanley Hospital, Western Australia, Australia
| | - Y Y Lee
- Radiation Oncology, Division of Cancer Services, Princess Alexandra Hospital, Queensland, Australia
| | - D Talaulikar
- Department of Haematology, Canberra Hospital, ACT, Australia
| | - M Ku
- Department of Clinical Haematology, St Vincent's Hospital Melbourne, Fitzroy, Australia.,University of Melbourne, Victoria, Australia
| | - J Wight
- Department of Haematology, Townsville Hospital, Australia
| | - M Tatarczuch
- Monash Haematology, Monash Health, Clayton, Australia.,School of Clinical Sciences at Monash Health, Monash University, Clayton, Australia
| | - F Swain
- Division of Cancer Services, Princess Alexandra Hospital, Australia
| | - G P Gregory
- Monash Haematology, Monash Health, Clayton, Australia.,School of Clinical Sciences at Monash Health, Monash University, Clayton, Australia
| |
Collapse
|
3
|
Wight J, Hamad N, Campbell BA, Ku M, Lee K, Rose H, Armytage T, Latimer M, Lee HP, Lee ST, Dickinson M, Khor R, Verner E. Diffuse large B-cell lymphoma: A consensus practice statement from the Australasian Lymphoma Alliance. Intern Med J 2021; 52:1609-1623. [PMID: 34532916 DOI: 10.1111/imj.15533] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/29/2021] [Accepted: 09/12/2021] [Indexed: 11/28/2022]
Abstract
Diffuse large B-cell lymphoma (DLBCL) is the most common lymphoma subtype, accounting for 30-40% of lymphoma diagnoses. Though aggressive, cure is achievable in approximately 60% of cases with primary chemo-immunotherapy, and in a further substantial minority by salvage therapy and autologous stem cell transplantation. Despite promising activity in early phase clinical trials, no intensified or novel treatment regimen has improved outcomes over R-CHOP21 in randomised studies. However, there remain several areas of controversy including the most appropriate prognostic markers, CNS prophylaxis and the optimal treatment for patients with high-risk disease. This position statement presents an evidence-based synthesis of the literature for application in Australasian practice. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- J Wight
- Townsville University Hospital, Townsville, Australia.,Austin Health, Heidelberg, Australia.,The University of Melbourne, Melbourne, Australia.,James Cook University, Townsville, Australia
| | - N Hamad
- Department of Haematology, St Vincent's Hospital Sydney, Australia.,School of Medicine, Sydney, University of Notre Dame Australia.,St Vincent's Clinical School, Sydney, University of New South UK
| | - B A Campbell
- Department of Radiation oncology, Peter MacCallum Cancer Centre, Parkville, Victoria.,Department of Clinical Pathology, University of Melbourne, Parkville, Victoria
| | - M Ku
- St Vincent's Hospital, Melbourne, Victoria
| | - K Lee
- School of Medicine, University of Sydney, Sydney, New South Wales, Australia.,Anatomical Pathology Department, NSW Health Pathology, Concord Repatriation General Hospital, Sydney, New South Wales, Australia
| | - H Rose
- University Hospital Geelong, Victoria.,School of Medicine, Deakin University Geelong, Victoria
| | - T Armytage
- Department of haematology, Gosford Hospital, Gosford, New South, UK
| | - M Latimer
- Canberra Hospital, Canberra, Australia.,Australian National University, Canberra, Australia
| | - H P Lee
- Flinders Medical Centre, Adelaide, Australia
| | - S T Lee
- Austin Health, Heidelberg, Australia
| | - M Dickinson
- The University of Melbourne, Melbourne, Australia.,Department of Haematology, Peter MacCallum Cancer Centre, Parkville, Victoria
| | - R Khor
- Austin Health, Heidelberg, Australia
| | - E Verner
- School of Medicine, University of Sydney, Sydney, New South Wales, Australia.,Department of Haematology, Concord Repatriation General Hospital, Sydney, New South Wales, Australia
| |
Collapse
|
4
|
Hertzberg M, Ku M, Catalani O, Althaus B, Simko S, Gregory GP. A PHASE III TRIAL OF GLOFITAMAB PLUS GEMCITABINE AND OXALIPLATIN (GEMOX) VS RITUXIMAB PLUS GEMOX FOR RELAPSED/REFRACTORY DIFFUSE LARGE B‐CELL LYMPHOMA. Hematol Oncol 2021. [DOI: 10.1002/hon.165_2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- M. Hertzberg
- Prince of Wales Hospital Department of Hematology Sydney Australia
| | - M. Ku
- St.Vincent’s Hospital, The University of Melbourne, Department of Haematology Melbourne Australia
| | - O. Catalani
- F. Hoffmann‐La Roche Ltd, Statistics Basel Switzerland
| | - B. Althaus
- Genentech Inc., Product Development Hematology South San Francisco USA
| | - S. Simko
- Genentech Inc., Product Development Hematology South San Francisco USA
| | - G. P. Gregory
- School of Clinical Sciences at Monash Health Monash University Department of Clinical Haematology Melbourne Australia
| |
Collapse
|
5
|
Kim W, Assouline S, Bartlett N, Bosch F, Budde L, Cheah C, Gregory G, Hong J, Ku M, Marlton P, Matasar M, Nastoupil L, Panizo C, Sehn L, Tzachanis D, Chu W, Hernandez M, Kwan A, Li C, Sison I, Wei M, Yin S, Yousefi K, Yoon S. AN ONGOING PHASE 1/1B TRIAL INVESTIGATING NOVEL TREATMENT REGIMENS WITH MOSUNETUZUMAB IN RELAPSED/REFRACTORY B-CELL NON-HODGKIN LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.15_2632] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- W.S. Kim
- Division of Hematology-Oncology, Department of Internal Medicine; Samsung Medical Center, Sungkyunkwan University School of Medicine; Seoul Republic of Korea
| | - S. Assouline
- Division of Hematology; Jewish General Hospital; Montréal, QC Canada
| | - N.L. Bartlett
- Siteman Cancer Center; Washington University School of Medicine in St. Louis; St. Louis MO United States
| | - F. Bosch
- Department of Hematology; University Hospital Vall d'Hebron; Barcelona Spain
| | - L.E. Budde
- Department of Hematology & Hematopoietic Cell Transplantation; City of Hope National Medical Center; Duarte CA United States
| | - C. Cheah
- Linear Clinical Research and School of Medicine; University of Western Australia; WA Australia
| | - G.P. Gregory
- School of Clinical Sciences at Monash Health; Monash University; Clayton VIC Australia
| | - J. Hong
- Department of Oncology; ASAN Medical Center; Seoul Republic of Korea
| | - M. Ku
- Department of Haematology; St Vincent's Hospital, University of Melbourne; Melbourne VIC Australia
| | - P. Marlton
- Department of Medicine; University of Queensland School of Medicine and Princess Alexandra Hospital; Brisbane QLD Australia
| | - M. Matasar
- Lymphoma Service, Division of Hematologic Oncology, Department of Medicine; Memorial Sloan Kettering Cancer Center; New York NY United States
| | - L. Nastoupil
- Department of Lymphoma and Myeloma, Division of Cancer Medicine; The University of Texas MD Anderson Cancer Center; Houston TX United States
| | - C. Panizo
- Haemotology and Haemotherapy Department; Clínica Universidad de Navarra; Pamplona Spain
| | - L.H. Sehn
- Medical Oncology; BC Cancer Centre for Lymphoid Cancer and University of British Columbia; Vancouver BC Canada
| | - D. Tzachanis
- Department of Medicine; University of California San Diego; La Jolla CA United States
| | - W. Chu
- Product Development Oncology; Genentech, Inc.; South San Francisco CA United States
| | - M.G. Hernandez
- Product Development Oncology; Genentech, Inc.; South San Francisco CA United States
| | - A. Kwan
- Product Development Oncology; Genentech, Inc.; South San Francisco CA United States
| | - C.C. Li
- Product Development Oncology; Genentech, Inc.; South San Francisco CA United States
| | - I. Sison
- Product Development Oncology; Genentech, Inc.; South San Francisco CA United States
| | - M.C. Wei
- Product Development Oncology; Genentech, Inc.; South San Francisco CA United States
| | - S. Yin
- Product Development Oncology; Genentech, Inc.; South San Francisco CA United States
| | - K. Yousefi
- Product Development, Biometrics, Biostatistics; Genentech, Inc.; South San Francisco CA United States
| | - S. Yoon
- Division of Hematology/Medical Oncology, Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
| |
Collapse
|
6
|
Seymour J, Opat S, Cull G, Trotman J, Gottlieb D, Simpson D, Marlton P, Anderson M, Ku M, Ritchie D, Ratnasingam S, Augustson B, Kim W, Wang L, Xue L, Hilger J, Huang J, Hedrick E, Roberts A, Tam C. HIGH OVERALL RESPONSE RATE WITH THE BTK INHIBITOR BGB-3111 IN PATIENTS WITH CHRONIC LYMPHOCYTIC LEUKEMIA/SMALL LYMPHOCYTIC LYMPHOMA: AN UPDATE ON SAFETY AND ACTIVITY. Hematol Oncol 2017. [DOI: 10.1002/hon.2438_97] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- J.F. Seymour
- Department of Haematology; Peter MacCallum Cancer Centre; East Melbourne Australia
| | - S. Opat
- Clinical Haematology; Monash Health; Clayton Australia
| | - G. Cull
- Department of Haematology; Sir Charles Gairdner Hospital; Perth Australia
| | - J. Trotman
- Department of Haematology; Concord Hospital; Concord Australia
| | - D. Gottlieb
- Haematology Department; Westmead Hospital; Westmead Australia
| | - D. Simpson
- Aukland Haematology; North Shore Hospital; Aukland New Zealand
| | - P. Marlton
- University of Queensland School of Medicine; Princess Alexandra Hospital; Brisbane Australia
| | - M. Anderson
- Department of Clinical Haematology & BMT, The Royal Melbourne Hospital; University of Melbourne; Parkville Australia
| | - M. Ku
- Clinical Haematology, Austin Health; Heidelberg Australia
| | - D.S. Ritchie
- Department of Haematology; Peter MacCallum Cancer Centre; East Melbourne Australia
| | | | - B. Augustson
- Department of Haematology; Sir Charles Gairdner Hospital; Perth Australia
| | - W. Kim
- Division of Hematology-Oncology; Samsung Medical Center; Seoul Korea, Republic of
| | - L. Wang
- Research and Development Center, BeiGene, Beijing and Emeryville; CA, US China
| | - L. Xue
- Research and Development Center, BeiGene, Beijing and Emeryville; CA, US China
| | - J. Hilger
- Research and Development Center, BeiGene, Beijing and Emeryville; CA, US China
| | - J. Huang
- Research and Development Center, BeiGene, Beijing and Emeryville; CA, US China
| | - E. Hedrick
- Research and Development Center, BeiGene, Beijing and Emeryville; CA, US China
| | - A.W. Roberts
- Department of Clinical Haematology & BMT, The Royal Melbourne Hospital; University of Melbourne; Parkville Australia
| | - C.S. Tam
- Department of Haematology; Peter MacCallum Cancer Centre; East Melbourne Australia
| |
Collapse
|
7
|
Lee E, Yang J, Ku M, Kim NH, Park Y, Park CB, Suh JS, Park ES, Yook JI, Mills GB, Huh YM, Cheong JH. Metabolic stress induces a Wnt-dependent cancer stem cell-like state transition. Cell Death Dis 2015; 6:e1805. [PMID: 26136078 PMCID: PMC4650724 DOI: 10.1038/cddis.2015.171] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [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: 01/25/2015] [Revised: 04/17/2015] [Accepted: 04/21/2015] [Indexed: 12/21/2022]
Abstract
Reciprocal interactions between cancer cells and the tumor microenvironment drive multiple clinically significant behaviors including dormancy, invasion, and metastasis as well as therapy resistance. These microenvironment-dependent phenotypes share typical characteristics with cancer stem cells (CSC). However, it is poorly understood how metabolic stress in the confined tumor microenvironment contributes to the emergence and maintenance of CSC-like phenotypes. Here, we demonstrate that chronic metabolic stress (CMS) in a long-term nutrient deprivation induces a Wnt-dependent phenoconversion of non-stem cancer cells toward stem-like state and this is reflected in the transcriptome analysis. Addition of Wnt3a as well as transfection of dominant-negative Tcf4 establishes an obligatory role for the Wnt pathway in the acquisition of CSC-like characteristics in response to metabolic stress. Furthermore, systematic characterization for multiple single cell-derived clones and negative enrichment of CD44+/ESA+ stem-like cancer cells, all of which recapitulate stem-like cancer characteristics, suggest stochastic adaptation rather than selection of pre-existing subclones. Finally, CMS in the tumor microenvironment can drive a CSC-like phenoconversion of non-stem cancer cells through stochastic state transition dependent on the Wnt pathway. These findings contribute to an understanding of the metabolic stress-driven dynamic transition of non-stem cancer cells to a stem-like state in the tumor metabolic microenvironment.
Collapse
Affiliation(s)
- E Lee
- Department of Radiology, Yonsei University College of Medicine, Seoul 120-752, Republic of Korea
- Nanomedical National Core Research Center, Yonsei University, Seoul 120-749, Republic of Korea
| | - J Yang
- Department of Radiology, Yonsei University College of Medicine, Seoul 120-752, Republic of Korea
- Yonsei-KRIBB Medical Convergence Research Institute, Yonsei University Health System, Seoul, Korea
| | - M Ku
- Department of Radiology, Yonsei University College of Medicine, Seoul 120-752, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul 120-752, Republic of Korea
| | - N H Kim
- Department of Oral pathology, Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul 120-752, Republic of Korea
| | - Y Park
- Department of Radiology, Yonsei University College of Medicine, Seoul 120-752, Republic of Korea
| | - C B Park
- Department of Oral pathology, Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul 120-752, Republic of Korea
| | - J-S Suh
- Department of Radiology, Yonsei University College of Medicine, Seoul 120-752, Republic of Korea
- Yonsei-KRIBB Medical Convergence Research Institute, Yonsei University Health System, Seoul, Korea
- Severance Biomedical Science Institute (SBSI), Seoul 120-752, Republic of Korea
| | - E S Park
- Yonsei-KRIBB Medical Convergence Research Institute, Yonsei University Health System, Seoul, Korea
| | - J I Yook
- Department of Oral pathology, Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul 120-752, Republic of Korea
| | - G B Mills
- Department of Systems Biology, MD Anderson Cancer Center, Houston, TX, USA
| | - Y-M Huh
- Department of Radiology, Yonsei University College of Medicine, Seoul 120-752, Republic of Korea
- Yonsei-KRIBB Medical Convergence Research Institute, Yonsei University Health System, Seoul, Korea
- Severance Biomedical Science Institute (SBSI), Seoul 120-752, Republic of Korea
| | - J-H Cheong
- Severance Biomedical Science Institute (SBSI), Seoul 120-752, Republic of Korea
- Department of Surgery, Yonsei University College of Medicine, Seoul 120-752, Republic of Korea
- Department of Biochemistry & Molecular Biology, Yonsei University College of Medicine, Seoul 120-752, Republic of Korea
| |
Collapse
|
8
|
Hu F, Ku M, Markovic D, Dzaye ODA, Lehnardt S, Wolf SA, Kettenmann H, Synowitz M. P17.40 * GLIOMA ASSOCIATED MICROGLIAL MMP9 EXPRESSION IS UP REGULATED BY TLR2 SIGNALLING AND SENSITIVE TO MINOCYCLINE. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
9
|
Fairman A, Macarthur J, Cohen J, Hiesinger W, Ku M, Shudo Y, Atluri P, Woo Y. Biochemically Engineered Stromal Cell-Derived Factor-1alpha Analog Increases Perfusion in The Ischemic Hindlimb. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
10
|
Benoiton L, Autagavaia V, Pencheva L, Perley A, Hill O, Song N, Murphy D, Sheriff A, Allbon D, Ku M, Williams MJA, Wilkins GT, Chen VHT. Use of Bivalirudin During Primary Percutaneous Coronary Intervention for Acute St Elevation Myocardial Infarction. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
11
|
Pak VV, Ku M, Li N, Kim MS, Kasymova TD, Kwon DY. Structures of the Peptide Leu-Pro-Tyr-Pro and Its Derivatives and the Nicotinamide Part of NADPH by a Semi-Empirical PM3 Method. Chem Nat Compd 2005. [DOI: 10.1007/s10600-005-0077-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
12
|
Rodríguez MC, Margos G, Compton H, Ku M, Lanz H, Rodríguez MH, Sinden RE. Plasmodium berghei: routine production of pure gametocytes, extracellular gametes, zygotes, and ookinetes. Exp Parasitol 2002; 101:73-6. [PMID: 12243741 DOI: 10.1016/s0014-4894(02)00035-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M C Rodríguez
- Infection and Immunity Section, Imperial College of Science Technology and Medicine, Department of Biology, Alexander Fleming Building, Imperial College Road, London SW7 2AZ, UK.
| | | | | | | | | | | | | |
Collapse
|
13
|
Ku M. Austrian universities. Scientists spar over reform plan. Science 2001; 292:1625-6. [PMID: 11387446 DOI: 10.1126/science.292.5522.1625a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
14
|
Ku M. Swiss science. New program draws praise, complaints. Science 2001; 291:964. [PMID: 11232571 DOI: 10.1126/science.291.5506.964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
15
|
Abstract
The micronuclear DNA of Paramecium tetraurelia is estimated to contain over 50,000 short DNA elements that are precisely removed during the formation of the transcriptionally active macronucleus. Each internal eliminated sequence (IES) is bounded by 5'-TA-3' dinucleotide repeats, a feature common to some classes of DNA transposons. We have developed an in vivo assay to analyze these highly efficient and precise DNA excision events. The microinjection of a cloned IES into mating cells results in accurately spliced products, and the transformed cells maintain the injected DNA as extrachromosomal molecules. A series of deletions flanking one side of a 28-bp IES were constructed and analyzed with the in vivo assay. Whereas 72 bp of DNA flanking the eliminated region is sufficient for excision, lengths of 31 and 18 bp result in reduced excision and removal of all wild-type sequences adjacent to the TA results in complete failure of excision. In contrast, nucleotide mutations within the middle of the 28-bp IES do not prevent excision. The results are consistent with a functional role for perfect inverted repeats flanking the IES.
Collapse
Affiliation(s)
- M Ku
- Department of Biochemistry, Purdue University, West Lafayette, Indiana 47907, USA
| | | | | |
Collapse
|
16
|
Chow J, Munro C, Wong M, Gonzalez N, Ku M, Neville S, Munro R, Hall B, Cleland B, Howlin K, Suranyi MG. HomeChoice automated peritoneal dialysis machines: the impact of reuse of tubing and cassettes. Perit Dial Int 2000; 20:336-8. [PMID: 10898052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Affiliation(s)
- J Chow
- Renal Unit, Liverpool Hospital, South Western Area Pathology Service, South Western Sydney Area Health Service, New South Wales, Australia.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Abstract
We have isolated and characterized a novel Xenopus wnt gene, Xwnt-11, whose expression pattern and overexpression phenotype suggest that it may be important for dorsal-ventral axis formation. Xwnt-11 mRNA is present during oogenesis and embryonic development through swimming tadpole stages. Xwnt-11 mRNA is ubiquitous in early oocytes and is localized during mid-oogenesis. By late oocyte stages, Xwnt-11 mRNA is localized to the vegetal cortex, with some mRNA in the vegetal cytoplasm. After egg maturation, Xwnt-11 mRNA is released from the vegetal cortex and is found in the vegetal cytoplasm. This early pattern of Xwnt-11 mRNA localization is similar to another vegetally localized maternal mRNA, Vg1 (D. A. Melton (1987) Nature 328, 80–82). In the late blastula, Xwnt-11 mRNA is found at high levels in the dorsal marginal zone. As gastrulation proceeds, Xwnt-11 mRNA appears in the lateral and ventral marginal zone and, during tadpole stages, it is found in the somites and first branchial arch. Injection of Xwnt-11 mRNA into UV-ventralized embryos can substantially rescue the UV defect by inducing the formation of dorsal tissues. The rescued embryos develop somitic muscle and neural tube; however, they lack notochord and anterior head structures.
Collapse
Affiliation(s)
- M Ku
- Department of Biochemistry and Molecular Biology, Harvard University, Cambridge, MA 02138
| | | |
Collapse
|
18
|
Steinbeisser H, De Robertis EM, Ku M, Kessler DS, Melton DA. Xenopus axis formation: induction of goosecoid by injected Xwnt-8 and activin mRNAs. Development 1993; 118:499-507. [PMID: 7900991 DOI: 10.1242/dev.118.2.499] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In this study, we compare the effects of three mRNAs-goosecoid, activin and Xwnt-8- that are able to induce partial or complete secondary axes when injected into Xenopus embryos. Xwnt-8 injection produces complete secondary axes including head structures whereas activin and goosecoid injection produce partial secondary axes at high frequency that lack head structures anterior to the auditory vesicle and often lack notochord. Xwnt-8 can activate goosecoid only in the deep marginal zone, i.e., in the region in which this organizer-specific homeobox gene is normally expressed on the dorsal side. Activin B mRNA, however, can turn on goosecoid in all regions of the embryo. We also tested the capacity of these gene products to restore axis formation in embryos in which the cortical rotation was blocked by UV irradiation. Whereas Xwnt-8 gives complete rescue of anterior structures, both goosecoid and activin give partial rescue. Rescued axes including hindbrain structures up to level of the auditory vesicle can be obtained at high frequency even in the absence of notochord structures. The possible functions of Wnt-like and activin-like signals and of the goosecoid homeobox gene, and their order of action in the formation of Spemann's organizer are discussed.
Collapse
Affiliation(s)
- H Steinbeisser
- Molecular Biology Institute, University of California, Los Angeles 90024-1737
| | | | | | | | | |
Collapse
|
19
|
Lee JM, Ku M, Haberer SA. The bovine pericardial xenograft: III. Effect of uniaxial and sequential biaxial stress during fixation on the tensile viscoelastic properties of bovine pericardium. J Biomed Mater Res 1989; 23:491-506. [PMID: 2715162 DOI: 10.1002/jbm.820230504] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Our previous two articles have shown that glutaraldehyde-fixed bovine pericardium is nearly isotropic, whether fixed without constraints, with tethering, or with pressure. In this study, we have used uniaxial stress during fixation to produce bovine pericardial material with marked tensile anisotropy. Rectangular and cruciate pericardial samples have been mechanically examined after one of four treatments: (i) fixation under 88-kPa uniaxial stress, (ii) fixation under 176-kPa uniaxial stress, (iii) 3 h of 176-kPa uniaxial stress in saline followed by 24-h fixation under the same stress, (iv) fixation under 176-kPa uniaxial stress followed by a second fixation under 176-kPa stress in a direction normal to the first. Strips of material were cut at 0 degree, 30 degrees, 60 degrees, and 90 degrees to direction of the initial stress, and tested for response to cyclic loading, stress relaxation, plastic deformation, and fracture properties. Fixation under uniaxial stress produced anistropy similar to that seen in porcine aortic valve leaflets; however, the overall extensibility of the material depended on the applied stress and the aspect ratio of the stressed sample. While loading in saline produced no change, the sequential biaxial stressing produced a reduction in anisotropy, suggesting exposure of additional crosslinking sites. Uniaxial stress during fixation may be a useful method for construction of anisotropic heart valve leaflets.
Collapse
Affiliation(s)
- J M Lee
- Centre for Biomaterials, University of Toronto, Ontario, Canada
| | | | | |
Collapse
|