Naoya Sakamoto

Discovery of 17,18 O-rich material from meteorite by direct-imaging method using stigmatic-SIMS and 2D ion detector (2008)

Sakamoto, Naoya, Itoh, Shoichi, Yurimoto, Hisayoshi

We report a discovery of a chemically and isotopically unique material distributed ubiquitously in fine-grained matrix of a primitive carbonaceous chondrite Acfer 094. The observations were made in...

A Cell-Based, High-Throughput Screen for Small Molecule Regulators of Hepatitis C Virus Replication (2008)

Sun Suk Kim, Lee F. Peng, Wenyu Lin, Won-hyeok Choe, Naoya Sakamoto, Stuart L. Schreiber, ...

Background & Aims: Only half of patients with chronic hepatitis C virus (HCV) infection experience sustained virologic response to pegylated-interferon and ribavirin, which cause numerous side...

Remnants of the early solar system water enriched in heavy oxygen isotopes (2007)

Sakamoto, Naoya, Seto, Yusuke, Itoh, Shoichi, Kuramoto, Kiyoshi, Fujino, Kiyoshi, Nagashima, Kazuhide, ...

Oxygen isotopic composition of our solar system is believed to have resulted from mixing of two isotopically distinct nebular reservoirs, 16O-rich and 17,18O-rich relative to Earth. The nature and...

Remnants of the early solar system water enriched in heavy oxygen isotopes. (2007)

Sakamoto, Naoya, Seto, Yusuke, Itoh, Shoichi, Kuramoto, Kiyoshi, Fujino, Kiyoshi, Nagashima, Kazuhide, ...

Oxygen isotopic composition of our solar system is believed to have resulted from mixing of two isotopically distinct nebular reservoirs, 16O-rich and 17,18O-rich relative to Earth. The nature and...

Role of sarcolemmal KATP channels in cardioprotection against ischemia/reperfusion injury in mice

Suzuki, Masashi, Sasaki, Norihito, Miki, Takashi, Sakamoto, Naoya, Ohmoto-Sekine, Yuki, Tamagawa, Masaji, ...

Recently it has been postulated that mitochondrial ATP-sensitive K+ (mitoKATP) channels rather than sarcolemmal KATP (sarcKATP) channels are important as end effectors and/or triggers of ischemic...

Regulation of Hepatitis C Virus Replication by Interferon Regulatory Factor 1

Kanazawa, Nobuhiko, Kurosaki, Masayuki, Sakamoto, Naoya, Enomoto, Nobuyuki, Itsui, Yasuhiro, Yamashiro, Tsuyoshi, ...

Cellular antiviral responses are mediated partly by the expression of interferon-stimulated genes, triggered by viral genomes, their transcripts and replicative intermediates. Persistent replication...

Inhibition of intracellular hepatitis C virus replication by synthetic and vector-derived small interfering RNAs

Yokota, Takanori, Sakamoto, Naoya, Enomoto, Nobuyuki, Tanabe, Yoko, Miyagishi, Makoto, Maekawa, Shinya, ...

Small interfering RNAs (siRNAs) efficiently inhibit gene expression by RNA interference. Here, we report efficient inhibition, by both synthetic and vector-derived siRNAs, of hepatitis C virus (HCV)...

Role of sarcolemmal KATP channels in cardioprotection against ischemia/reperfusion injury in mice

Suzuki, Masashi, Sasaki, Norihito, Miki, Takashi, Sakamoto, Naoya, Ohmoto-Sekine, Yuki, Tamagawa, Masaji, ...

Recently it has been postulated that mitochondrial ATP-sensitive K+ (mitoKATP) channels rather than sarcolemmal KATP (sarcKATP) channels are important as end effectors and/or triggers of ischemic...

Regulation of Hepatitis C Virus Replication by Interferon Regulatory Factor 1

Kanazawa, Nobuhiko, Kurosaki, Masayuki, Sakamoto, Naoya, Enomoto, Nobuyuki, Itsui, Yasuhiro, Yamashiro, Tsuyoshi, ...

Cellular antiviral responses are mediated partly by the expression of interferon-stimulated genes, triggered by viral genomes, their transcripts and replicative intermediates. Persistent replication...

Inhibition of intracellular hepatitis C virus replication by synthetic and vector-derived small interfering RNAs

Yokota, Takanori, Sakamoto, Naoya, Enomoto, Nobuyuki, Tanabe, Yoko, Miyagishi, Makoto, Maekawa, Shinya, ...

Small interfering RNAs (siRNAs) efficiently inhibit gene expression by RNA interference. Here, we report efficient inhibition, by both synthetic and vector-derived siRNAs, of hepatitis C virus (HCV)...

Bradykinin B2-receptor-mediated modulation of membrane currents in guinea-pig cardiomyocytes

Sakamoto, Naoya, Uemura, Hiroko, Hara, Yukio, Saito, Toshihiro, Masuda, Yoshiaki, Nakaya, Haruaki

In order to define the electrophysiological mechanism(s) responsible for bradykinin (BK)-induced positive inotropic and chronotropic responses in isolated guinea-pig atria, effects of BK on the...

Identification of Novel Epoxide Inhibitors of Hepatitis C Virus Replication Using a High-Throughput Screen▿ † §

Peng , Lee F., Kim, Sun Suk, Matchacheep, Sirinya, Lei, Xiaoguang, Su, Shun, Lin, Wenyu, ...

Using our high-throughput hepatitis C replicon assay to screen a library of over 8,000 novel diversity-oriented synthesis (DOS) compounds, we identified several novel compounds that regulate...

Adoptive immunotherapy with liver allograft–derived lymphocytes induces anti-HCV activity after liver transplantation in humans and humanized mice

Ohira, Masahiro, Ishiyama, Kohei, Tanaka, Yuka, Doskali, Marlen, Igarashi, Yuka, Tashiro, Hirotaka, ...

After liver transplantation in HCV-infected patients, the virus load inevitably exceeds pre-transplantation levels. This phenomenon reflects suppression of the host-effector immune responses that...