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Takamitsu Kato, Ph.D.

Associate Professor,
Radiation Cancer Biology and Oncology

Office: 439 Molecular and Radiological Biosciences (MRB)
Office Phone: 970-491-1881


Dr. Kato's PubMed Publications


Dr. Kato’s research is focused on DNA damage and repair after environmental stress including ionizing radiation, ultraviolet light, heat, mutagenic and carcinogenic compounds. Particle radiation therapy radiobiology research, small animal radiobiology research, and phytochemical research are also conducted with international collaborations.


Ph.D.: Radiological Health Sciences, Colorado State University, Fort Collins, CO: 2006

B.A.: Liberal Arts, International Christian University, Tokyo, Japan: 2002

Selected Publications

Maeda J, Yurkon CR, Fujii Y, Fujisawa H, Kato S, Brents CA, Uesaka M, Fujimori A, Kitamura H, Kato TA, Solution radioactivated by hadron radiation can increase sister chromatid exchange, PLOS ONE, 2015 Dec 14;10(12):e0144619. doi: 10.1371/journal.pone.0144619. eCollection 2015.

Haskins AH, Su C, Engen A, Sarina V, Maeda J, Uesaka M, Y Aizawa, Kato TA, Data for induction of cytotoxic response by natural and novel quercetin glycosides, Data in Brief, 2015, Dec 12;6:262-6. doi: 10.1016/j.dib.2015.11.066. eCollection 2016 Mar.

McMillan DD, Maeda J, Bell JJ, Genet MD, Phoonswadi G, Mann KA, Kraft SL, Kitamura H, Fujimori A, Yoshii Y, Furukawa T, Fujibayashi Y, Kato TA. Validation of 64Cu-ATSM damaging DNA via high-LET Auger electron emission. J Radiat Res. 2015 Sep;56(5):784-91. doi: 10.1093/jrr/rrv042. Epub 2015 Aug 6.

Cartwright IM. Kato TA. Role of various DNA repair pathways in chromosomal inversion formation in CHO mutants. International Journal of Radiation Biology, 2015 Oct 29: 1-9.

Kaburagi M, Yamada H, Miyakawa T, Morikawa R, Takasu M, Kato TA, Uesaka M, Molecular dynamic simulation of telomeric single-stranded DNA and Pot1, Polymer Journal, 2015, Epub 2015 Oct 14.

Liu X, He Y, Li F, Huang Q, Kato TA, Hall RP, Li CY. Redeficing the roles of apoptotic factors in carcinogenesis. Molecular & Cellular Oncology, Epub 2015 June 10.

Liu X, He Y, Li F, Huang Q, Kato TA, Hall RP, Li CY. Caspase-3 promotes genetic instability and carcinogenesis. Molecular Cell, 2015 Apr8 S1097-2965

Engen A, Maeda J, Wozniak DE, Brents CA, Bell JJ, Uesaka M, Aizawa Y, Kato TA, Induction of cytotoxic and genotoxic responses by natural and novel quercetin glycosides. Mutation Research 2015 Jun;784-785:15-22 doi: 10,1016/j.mrgentox.2015.04.007. Epub 2015 Apr 13.

Maeda J, Fujii Y, Fujisawa H, Hirakawa H, Cartwright IM, Uesaka M, Kitamura H, Fujimori A, Kato TA, The hyperthermia induced radiosensitization in CHO wild type, NHEJ and HR repair mutant after proton and carbon-ion exposure, Oncology Letters, 2015 10: 2828-2834.

Maeda J, Bell JJ, Genet SC, Fujii Y, Genet MD, Brents CA, Genik PC, Kato TA, Potentially lethal damage repair in drug arrested G2 phase cells following radiation exposure, Radiation Research, 2014, 182, 448-457.

Cartwright IM, Bell JJ, Maeda J, Genet MD, Fujii Y, Fujimori A, Kitamura H, Kamada T, Chen DJ, Kato TA, Effects of targeted phosphorylation site mutations in DNA-PKcs phosphorylation domain on low and high LET radiation sensitivity, Oncology Letters, 2015, Apr;9(4):1621-1627. Epub 2015 Feb 17.

Lin YF, Nagasawa H, Little JB, Kato TA, Shih HY, Xie XJ, Wilson PF, Brogan JR, Kurimasa A, Chen DJ. Bedford JS, Chen BP, Differential radiosensitivity phenotypes of DNA-PKcs mutations affecting NHEJ and HRR systems following irradiation with gamma-rays or very low fluence of alpha particle, PLOS One, 2014, 9, 4, e93579.

Kato TA, Wozniak DE, Murder with Radioactive Polonium metal, Forensic Science Review, 2014, 59:79

Cartwright IM, Genet MD, Fujimori A, Kato TA, Role of LET and chromatin structure on chromosome inversion in CHO 10B2 cells, Genome Integrity, 2014, 5:1.

Sunada S, Fujisawa H, Cartwright IM, Maeda J, Brents CA, Aizawa Y, Kato TA, Uesaka M, Monoglucosyl-rutin as a possible radioprotectant in mammalian cells, Molecular Medicine Reports, 2014 Jul 10(1):10-4.

Kaburagi M, Fukuda M, Yamada H, Miyakawa T, Morikawa R, Takasu M, Kato TA, Uesaka M, Molecular dynamics simulation of telomere and proteins, Proceeding of the 12th Asia Pacific Physics Conference, 2014, JPS Conf. Proc. 1. 016018.

Maeda J, Roybal EJ, Brents CA, Uesaka M, Aizawa Y, Kato TA, Natural and glucosyl flavonoids inhibit poly(ADP-ribose) polymerase activity and induce synthetic lethality in BRCA mutant cells, Oncology Reports, 2014 Feb;31(2):551-6. Epub 2013 Dec5.

Genet MD, Cartwright IM, Kato TA, Direct DNA and PNA probe binding to telomeric regions without classical In Situ hybridization, Molecular Cytogenetics. 2013 Oct8 8:6(1):42.

Fujisawa H, Genik PC, Kitamura H, Fujimori A, Uesaka M, Kato TA, Comparison of human chordoma cell-kill for 290 MeV/n carbon ions versus 70 MeV protons in vitro. Radiation Oncology 2013 Apr 15;8(1):91.

Fujii Y, Yurkon CR, Maeda J, Genet SC, Kubota N, Fujimori A, Mori T, Maruo K, Kato TA. Comparative study of radioresistance between feline and human cells. Radiation Research. 2013 Jul;180(1):70-7. Epub 2013 Jun 17.

Fujii Y, Yurkon CR, Maeda J, Genet SC, Okayasu R, Kitamura H, Fujimori A, Kato TA. Influence of track directions on the biological consequences in cells irradiated with high LET heavy ions. International Journal of Radiation Biology. 2013 Jun;89(6):401-10. Epub 2013 Feb 28.

Fujii Y, Genet MD, Roybal EJ, Kubota N, Okayasu R, Miyagawa K, Fujimori A, Kato TA. Comparison of the bromodeoxyuridine-mediated sensitization effects between low-LET and high-LET ionizing radiation on DNA double-strand breaks.  Oncology Reports. 2013 Jun;29(6):2133-9. Epub 2013 Mar 20.

Genet SC, Fujii Y, Maeda J, Kaneko M, Genet MD, Miyagawa K, Kato TA, Hyperthermia inhibits homologous recombination repair and sensitizes cells to ionizing radiation in a time and temperature dependent manner. Journal of Cellular Physiology. 2013 Jul;228(7):1473-81. 2012 Dec 18. doi: 10.1002/jcp.24302. [Epub ahead of print]

Maeda J, Yurkon CR, Fujisawa H, Kaneko M, Genet SC, Roybal EJ, Rota GW, Saffer ER, Rose BJ, Hanneman WH, Thamm DH, Kato TA. Genomic Instability and Telomere Fusion of Canine Osteosarcoma Cell Lines, PLOS One. 2012, 7, 8, e43355.

Cartwright IM, Genet MD, Kato TA, A simple and rapid fluorescence in situ hybridization microwave protocol for reliable dicentric chromosome analysis, Journal of Radiation Research. 2013 Mar 1;54(2):344-8. doi: 10.1093/jrr/rrs090. Epub 2012 Nov 15.

Genet SC, Maeda J, Fujisawa H, Yurkon CR, Fujii Y, Romero AM, Genik PC, Fujimori A, Kitamura H, Kato TA, Comparison of cellular lethality in DNA repair-proficient or –deficient cell lines resulting from exposure to 70 MeV/n protons or 290 MeV/n carbon ions, Oncology Reports. 2012, 28, 1591-1596.

Kato TA, Okayasu R, Jeggo PA, Fujimori A. ASPM influences DNA double-strand break repair and represents a potential target for radiotherapy. International Journal of Radiation Biology, 2011 Dec 87, 12, 1189-1195

Kato TA, Tsuda A, Uesaka M, Fujimori A, Kamada T, Tujii H, Okayasu R. In vitro characterization of cells derived from chordoma cell line U-CH1 following treatment with X-rays, heavy ions and chemotherapeutic drugs. Radiation Oncology, 2011, 6, 116

Legare ME, Bush J, Ashley AK, Kato T, Hanneman WH. Cellular and phenotypic characterization of canine osteosarcoma cell lines. Journal of Cancer. 2011 May 4;2:262-70.

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