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  • 1
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    Generation of transgenic non-human primates with germline transmission (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-05-30
    Description: The common marmoset (Callithrix jacchus) is increasingly attractive for use as a non-human primate animal model in biomedical research. It has a relatively high reproduction rate for a primate, making it potentially suitable for transgenic modification. Although several attempts have been made to produce non-human transgenic primates, transgene expression in the somatic tissues of live infants has not been demonstrated by objective analyses such as polymerase chain reaction with reverse transcription or western blots. Here we show that the injection of a self-inactivating lentiviral vector in sucrose solution into marmoset embryos results in transgenic common marmosets that expressed the transgene in several organs. Notably, we achieved germline transmission of the transgene, and the transgenic offspring developed normally. The successful creation of transgenic marmosets provides a new animal model for human disease that has the great advantage of a close genetic relationship with humans. This model will be valuable to many fields of biomedical research.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sasaki, Erika -- Suemizu, Hiroshi -- Shimada, Akiko -- Hanazawa, Kisaburo -- Oiwa, Ryo -- Kamioka, Michiko -- Tomioka, Ikuo -- Sotomaru, Yusuke -- Hirakawa, Reiko -- Eto, Tomoo -- Shiozawa, Seiji -- Maeda, Takuji -- Ito, Mamoru -- Ito, Ryoji -- Kito, Chika -- Yagihashi, Chie -- Kawai, Kenji -- Miyoshi, Hiroyuki -- Tanioka, Yoshikuni -- Tamaoki, Norikazu -- Habu, Sonoko -- Okano, Hideyuki -- Nomura, Tatsuji -- England -- Nature. 2009 May 28;459(7246):523-7. doi: 10.1038/nature08090.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Central Institute for Experimental Animals, 1430 Nogawa, Miyamae-ku, Kawasaki, Kanagawa 216-0001, Japan. esasaki@ciea.or.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19478777" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Genetically Modified/*genetics ; Animals, Newborn ; Callithrix/embryology/*genetics ; *Disease Models, Animal ; Gene Expression Profiling ; Germ Cells/*metabolism ; Green Fluorescent Proteins/genetics ; Heredity/*genetics ; Humans ; Transcription, Genetic ; Transgenes/*genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 2
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    Loss of imprinting of Igf2 alters intestinal maturation and tumorigenesis in mice (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-02-26
    Description: Loss of imprinting (LOI) of the insulin-like growth factor II gene (IGF2) is an epigenetic alteration that results in a modest increase in IGF2 expression, and it is present in the normal colonic mucosa of about 30% of patients with colorectal cancer. To investigate its role in intestinal tumorigenesis, we created a mouse model of Igf2 LOI by crossing female H19+/- mice with male Apc+/Min mice. Mice with LOI developed twice as many intestinal tumors as did control littermates. Notably, these mice also showed a shift toward a less differentiated normal intestinal epithelium, reflected by an increase in crypt length and increased staining with progenitor cell markers. A similar shift in differentiation was seen in the normal colonic mucosa of humans with LOI. Thus, altered maturation of nonneoplastic tissue may be one mechanism by which epigenetic changes affect cancer risk.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sakatani, Takashi -- Kaneda, Atsushi -- Iacobuzio-Donahue, Christine A -- Carter, Mark G -- de Boom Witzel, Sten -- Okano, Hideyuki -- Ko, Minoru S H -- Ohlsson, Rolf -- Longo, Dan L -- Feinberg, Andrew P -- K08CA106610/CA/NCI NIH HHS/ -- R01CA65145/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2005 Mar 25;307(5717):1976-8. Epub 2005 Feb 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15731405" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoma/etiology/pathology ; Animals ; Apoptosis ; Cell Differentiation ; Cell Proliferation ; Colon/cytology/metabolism ; Colonic Neoplasms/etiology/pathology ; Enterocytes/*cytology/metabolism ; Ephrin-B1/analysis ; Epigenesis, Genetic ; Female ; *Genomic Imprinting ; Humans ; Insulin-Like Growth Factor II/*genetics/*metabolism ; Intestinal Mucosa/*cytology/metabolism ; Intestinal Neoplasms/*etiology/pathology ; Intestines/*metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Microfilament Proteins/analysis ; Nerve Tissue Proteins/analysis ; Nuclear Proteins/analysis ; RNA, Long Noncoding ; RNA, Untranslated/genetics ; RNA-Binding Proteins/analysis ; Stem Cells/cytology ; Transcription Factors/analysis ; Twist Transcription Factor
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Chlorine Isotopes: As a Possible Tracer of Fluid/Bio-Activities on Mars and a Progress Report on Chlorine Isotope Analysis by TIMs (2009)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Significantly large mass fractionations between chlorine isotopes (Cl-35, Cl-37) have been reported for terrestrial materials including both geological samples and laboratory materials. Also, the chlorine isotopic composition can be used as a tracer for early solar system processes. Moreover, chlorine is ubiquitous on the Martian surface. Typical chlorine abundances in Gusev soils are approx.0.5 %. The global surface average chlorine abundance also is approx.0.5 %. Striking variations among outcrop rocks at Meridiani were reported with some chlorine abundances as high as approx.2%. Characterizing conditions under which chlorine isotopic fractionation may occur is clearly of interest to planetary science. Thus, we have initiated development of a chlorine isotopic analysis technique using TIMS at NASA-JSC. We present here a progress report on the current status of development at JSC and discuss the possible application of chlorine isotopic analysis to Martian meteorites in a search for fluid- and possibly biological activity on Mars.
    Keywords: Geophysics
    Type: JSC-17680 , Lunar and Planetary Science Conference; Mar 23, 2009 - Mar 27, 2009; Texas; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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