Allen, Christopher D
Ashrafi, Kaveh
Atabai, Kamran
Black, Brian L
Blanc, Paul D
Botvinick, Elias H
Boushey, Homer A
Broaddus, V Courtney
Brown, James K
Bruneau, Benoit G
Calfee, Carolyn S.
Caughey, George H
Chang, Andy
Chapman, Harold A
Charo, Israel F
Chawla, Ajay
Chuang, Pao-Tien
Clyman, Ronald I
Conklin, Bruce R
Connolly, Andrew J
Conte, Michael S
Coughlin, Shaun R
Degrado, William F
Deo, Rahul C
Derynck, Rik M
Dobbs, Leland G
Engel, Joanne N
Erle, David J
Fahy, John Vincent
Fineman, Jeffrey R
Ganz, Peter
Gardner, David G
Gartner, Zev Jordan
Glantz, Stanton A
Gold, Warren M
Grabe, Michael D
Gropper, Michael
Grossman, William
Hart, Daniel O
Hata, Akiko
Hawgood, Samuel
Hoffman, Julien I
Huang, Guo
Ingraham, Holly A
Irannejad, Roshanak
Jan, Lily Y
Julius, David J
Jura, Natalia Z
Kan, Yuet W
Kane, John P
Karliner, Joel S
Kornberg, Thomas B
Koth, Laura L
Krauss, Ronald M
Kurtz, Theodore W
Kwok, Pui-Yan
Lazarus, Stephen C
Lee, Randall J
Lim, Wendell A
Ma, Dengke
Mahley, Robert W
Malloy, Mary J.
Mann, Michael J
Matthay, Michael A
Mcdonald, Donald M
Mikawa, Takashi
Minor, Daniel L
Mostov, Keith E
Oishi, Peter E
Olgin, Jeffrey E
Pearce, David
Peng, Tien
Raleigh, David R
Redberg, Rita F
Reiter, Jeremy F.
Rock, Jason R.
Rowitch, David H
Scheinman, Melvin M
Schiller, Nelson B
Seiple, Ian Bass
Sheppard, Dean
Shokat, Kevan M
Shu, Xiaokun
Shum, Anthony K
Simpson, Paul C
Springer, Matthew L
Srivastava, Deepak
Teitel, David F
Vedantham, Vasanth
Von Zastrow, Mark E
Wang, Rong
Wang, Biao
Wang, Lei
Weiner, Orion D
Weiss, Arthur
Weiss, Ethan J
Werb, Zena
Woodruff, Prescott G
Xu, Allison Wanting
Yeghiazarians, Yerem
Zovein, Ann C

CVRI Scientists

Roshanak Irannejad, Ph.D.
Assistant Professor in Residence

Research Interests:
Internal membrane compartments as hubs of signaling

Summary:
To function properly, cells and tissue must receive and interpret a large variety of signals. They do so, in part, through signaling receptors, some of which reside on cell surfaces known as plasma membranes. We study adrenergic receptors, which are targets of commonly used medicines including alpha and beta blockers. By developing a new class of sensors that allow for detection and visualization of signaling events in living cells, we made the unexpected finding that signaling cues to cells not only act on cell surface receptors but also on internal cellular compartments. This observation raises numerous questions pertaining to fundamental aspects of cell signaling and suggests that cells have spatially compartmentalized signaling hubs. This basic biological insight has clinical implications as well. For example, certain beta-blockers are known to have differential clinical efficacies but the underlying reasons for these differences are not known. We have found that different beta blockers act on distinct hubs of signaling. Beyond their well-established roles in cardiac physiology, adrenergic receptors regulate a wide variety of important physiologically and behavioral processes. We are using our newly developed tools to investigate the consequences of signaling from internal compartments on a range of cellular, physiological, and behavioral outcomes.

CVRIHead