Optical manipulation of local cerebral blood flow in the deep brain of freely moving mice

Yoshifumi Abe, Soojin Kwon, Mitsuhiro Oishi, Miyuki Unekawa, Norio Takata, Fumiko Seki, Ryuta Koyama, Manabu Abe, Kenji Sakimura, Kazuto Masamoto, Yutaka Tomita, Hideyuki Okano, Hajime Mushiake, Kenji F. Tanaka

研究成果: Article査読

9 被引用数 (Scopus)


An artificial tool for manipulating local cerebral blood flow (CBF) is necessary for understanding how CBF controls brain function. Here, we generate vascular optogenetic tools whereby smooth muscle cells and endothelial cells express optical actuators in the brain. The illumination of channelrhodopsin-2 (ChR2)-expressing mice induces a local reduction in CBF. Photoactivated adenylyl cyclase (PAC) is an optical protein that increases intracellular cyclic adenosine monophosphate (cAMP), and the illumination of PAC-expressing mice induces a local increase in CBF. We target the ventral striatum, determine the temporal kinetics of CBF change, and optimize the illumination intensity to confine the effects to the ventral striatum. We demonstrate the utility of this vascular optogenetic manipulation in freely and adaptively behaving mice and validate the task- and actuator-dependent behavioral readouts. The development of vascular optogenetic animal models will help accelerate research linking vasculature, circuits, and behavior to health and disease.

ジャーナルCell Reports
出版ステータスPublished - 2021 7月 27

ASJC Scopus subject areas

  • 生化学、遺伝学、分子生物学一般


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