Publications by authors named "Ryuichi Okayasu"

Claim this Profile
L
Lethal DNA Lesions Caused by Direct and Indirect Actions of X rays are Repaired via Different DSB Repair Pathways under Aerobic and Anoxic Conditions.
Ryoichi Hirayama, Atsushi Ito, Akiko Uzawa, Yoshitaka Matsumoto, Miho Noguchi, Ryuichi Okayasu

Radiat Res· May 2021

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
G
G1 Premature Chromosome Condensation (PCC) Assay.
Ryuichi Okayasu, Cuihua Liu

Methods Mol Biol· January 2020

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
S
Strategies to Enhance Radiosensitivity to Heavy Ion Radiation Therapy.
Younghyun Lee, Ryuichi Okayasu

Int J Part Ther· September 2018

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
N
Novel function of HATs and HDACs in homologous recombination through acetylation of human RAD52 at double-strand break sites.
Takeshi Yasuda, Wataru Kagawa, Tomoo Ogi, Takamitsu A Kato, Takehiro Suzuki, Ryuichi Okayasu

PLoS Genet· March 2018

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
O
Oxygen Enhancement Ratio in Radiation-Induced Initial DSBs by an Optimized Flow Cytometry-based Gamma-H2AX Analysis in A549 Human Cancer Cells.
Shigeaki Sunada, Hirokazu Hirakawa, Akira Fujimori, Mitsuru Uesaka, Ryuichi Okayasu

Radiat Res· November 2017

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
L
Low- and High-LET Ionizing Radiation Induces Delayed Homologous Recombination that Persists for Two Weeks before Resolving.
Christopher P Allen, Hirokazu Hirakawa, Nakako Izumi Nakajima, Sophia Moore, Jingyi Nie, Ryuichi Okayasu

Radiat Res· July 2017

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
S
STARLIFE-An International Campaign to Study the Role of Galactic Cosmic Radiation in Astrobiological Model Systems.
Ralf Moeller, Marina Raguse, Stefan Leuko, Thomas Berger, Christine Elisabeth Hellweg, Ryuichi Okayasu

Astrobiology· February 2017

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
T
TAS-116, a Novel Hsp90 Inhibitor, Selectively Enhances Radiosensitivity of Human Cancer Cells to X-rays and Carbon Ion Radiation.
Younghyun Lee, Shigeaki Sunada, Hirokazu Hirakawa, Akira Fujimori, Jac A Nickoloff, Ryuichi Okayasu

Mol Cancer Ther· January 2017

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
T
The purine scaffold Hsp90 inhibitor PU-H71 sensitizes cancer cells to heavy ion radiation by inhibiting DNA repair by homologous recombination and non-homologous end joining.
Younghyun Lee, Huizi Keiko Li, Aya Masaoka, Shigeaki Sunada, Hirokazu Hirakawa, Ryuichi Okayasu

Radiother Oncol· October 2016

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
N
Nontoxic concentration of DNA-PK inhibitor NU7441 radio-sensitizes lung tumor cells with little effect on double strand break repair.
Shigeaki Sunada, Hideki Kanai, Younghyun Lee, Takeshi Yasuda, Hirokazu Hirakawa, Ryuichi Okayasu

Cancer Sci· September 2016

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
R
Radiosensitization by PARP inhibition to proton beam irradiation in cancer cells.
Takahisa Hirai, Soichiro Saito, Hiroaki Fujimori, Keiichiro Matsushita, Teiji Nishio, Ryuichi Okayasu

Biochem Biophys Res Commun· September 2016

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
P
Pre-exposure to ionizing radiation stimulates DNA double strand break end resection, promoting the use of homologous recombination repair.
Nakako Izumi Nakajima, Yoshihiko Hagiwara, Takahiro Oike, Ryuichi Okayasu, Takeshi Murakami

PLoS One· March 2016

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
A
A comprehensive analysis of radiosensitization targets; functional inhibition of DNA methyltransferase 3B radiosensitizes by disrupting DNA damage regulation.
Hiroaki Fujimori, Akira Sato, Sota Kikuhara, Junhui Wang, Takahisa Hirai, Ryuichi Okayasu

Sci Rep· December 2015

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
D
DNA Damage Response Proteins and Oxygen Modulate Prostaglandin E2 Growth Factor Release in Response to Low and High LET Ionizing Radiation.
Christopher P Allen, Walter Tinganelli, Neelam Sharma, Jingyi Nie, Cory Sicard, Ryuichi Okayasu

Front Oncol· December 2015

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
V
VE-821, an ATR inhibitor, causes radiosensitization in human tumor cells irradiated with high LET radiation.
Hiroshi Fujisawa, Nakako Izumi Nakajima, Shigeaki Sunada, Younghyun Lee, Hirokazu Hirakawa, Ryuichi Okayasu

Radiat Oncol· August 2015

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
T
The combination of Hsp90 inhibitor 17AAG and heavy-ion irradiation provides effective tumor control in human lung cancer cells.
Hirokazu Hirakawa, Hiroshi Fujisawa, Aya Masaoka, Miho Noguchi, Ryoichi Hirayama, Ryuichi Okayasu

Cancer Med· March 2015

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
T
The complexity of DNA double strand break is a crucial factor for activating ATR signaling pathway for G2/M checkpoint regulation regardless of ATM function.
Lian Xue, Yoshiya Furusawa, Ryuichi Okayasu, Masahiko Miura, Xing Cui

DNA Repair (Amst)· January 2015

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
N
Novel characteristics of CtIP at damage-induced foci following the initiation of DNA end resection.
Hiroshi Fujisawa, Akira Fujimori, Ryuichi Okayasu, Mitsuru Uesaka, Hirohiko Yajima

Mutat Res· January 2015

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
C
Carbon ion beam is more effective to induce cell death in sphere-type A172 human glioblastoma cells compared with X-rays.
Momoko Takahashi, Hirokazu Hirakawa, Hirohiko Yajima, Nakako Izumi-Nakajima, Ryuichi Okayasu

Int J Radiat Biol· December 2014

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
H
Heterochromatin domain number correlates with X-ray and carbon-ion radiation resistance in cancer cells.
Katsutoshi Sato, Takashi Imai, Ryuichi Okayasu, Takashi Shimokawa

Radiat Res· October 2014

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
D
Dose-rate effect was observed in T98G glioma cells following BNCT.
Yuko Kinashi, Kakuji Okumura, Yoshihisa Kubota, Erika Kitajima, Ryuichi Okayasu

Appl Radiat Isot· June 2014

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
R
Radiosensitization of human lung cancer cells by the novel purine-scaffold Hsp90 inhibitor, PU-H71.
Tatsuya Segawa, Yoshihiro Fujii, Aya Tanaka, Shin-Ichi Bando, Ryuichi Okayasu

Int J Mol Med· March 2014

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
R
Resistance of Bacillus subtilis spore DNA to lethal ionizing radiation damage relies primarily on spore core components and DNA repair, with minor effects of oxygen radical detoxification.
Ralf Moeller, Marina Raguse, Günther Reitz, Ryuichi Okayasu, Zuofeng Li

Appl Environ Microbiol· January 2014

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
T
The complexity of DNA double strand breaks is a critical factor enhancing end-resection.
Hirohiko Yajima, Hiroshi Fujisawa, Nakako Izumi Nakajima, Hirokazu Hirakawa, Penelope A Jeggo, Ryuichi Okayasu

DNA Repair (Amst)· November 2013

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
O
OH radicals from the indirect actions of X-rays induce cell lethality and mediate the majority of the oxygen enhancement effect.
Ryoichi Hirayama, Atsushi Ito, Miho Noguchi, Yoshitaka Matsumoto, Akiko Uzawa, Ryuichi Okayasu

Radiat Res· November 2013

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis