University of Pittsburgh

Yulia Tyurina

Peter Wipf

Mitchell P Fink

Valerian Kagan

Jingbo Xiao

Anthony J Kanai

The present invention provides a composition and related methods for delivering cargo to a mitochondria which includes (a) a membrane active peptidyl fragment having a high affinity with the mitochondria and (b) cargo. The cargo may be selected from a wide variety of desired cargos which are to be delivered to the mitochondria for a specific purpose. Compositions and methods are disclosed for treating an illness that is caused or associated with cellular damage or dysfunction which is caused by excessive mitochondrial production of reaction oxygen species (ROS). Compositions which act as mitochondria-selective targeting agents using the structural signaling of the &#x3b2;-turn recognizable by cells as mitochondria) targeting sequences are discussed. Mitochondria and cell death by way of apoptosis is inhibited as a result of the ROS-scavenging activity, thereby increasing the survival rate of the patient.

Selective targeting agents for mitochondria

The present invention provides a composition and related methods for delivering cargo to a mitochondria which includes (a) a membrane active peptidyl fragment having a high affinity with the mitochondria and (b) cargo. The cargo may be selected from a wide variety of desired cargoes which are to be delivered to the mitochondria for a specific purpose. Compositions and methods are disclosed for treating an illness that is caused or associated with cellular damage or dysfunction which is caused by excessive mitochondrial production of reaction oxygen species (ROS). Compositions which act as mitochondria-selective targeting agents using the structural signaling of the &#x3b2;-turn recognizable by cells as mitochondria) targeting sequences are discussed. Mitochondria and cell death by way of apoptosis is inhibited as a result of the ROS-scavenging activity, thereby increasing the survival rate of the patient.

The present invention provides a composition and related methods for delivering cargo to a mitochondria which includes (a) a membrane active peptidyl fragment having a high affinity with the mitochondria and (b) cargo. The cargo may be selected from a wide variety of desired cargos which are to be delivered to the mitochondria for a specific purpose. Compositions and methods are disclosed for treating an illness that is caused or associated with cellular damage or dysfunction which is caused by excessive mitochondrial production of reaction oxygen species (ROS). Compositions which act as mitochondria-selective targeting agents using the structural signaling of the &#x3b2;-turn recognizable by cells as mitochondria) targeting sequences are discussed. Mitochondria and cell death by way of apoptosis is inhibited as a result of the ROS-scavenging activity, thereby increasing the survival rate of the patient. In a preferred embodiment, the compositions and methods may be administered therapeutically in the field to patients with profound hemorrhagic shock so that survival could be prolonged until it is feasible to obtain surgical control of the bleeding vessels. In further preferred embodiments, the composition for scavenging radicals in a mitochondria membrane includes a radical scavenging agent and a membrane active compound having a high affinity with said mitochondrial membrane and associated methods. In another embodiment, the cargo transported by mitochondrial-selective targeting agents may include an inhibitor of nitric oxide synthase (NOS) enzyme activity.

Compositions and methods are disclosed for treating an illness that is caused or associated with cellular damage or dysfunction which is caused by excessive mitochondrial production of reaction oxygen species (ROS). Compositions which act as mitochondria-selective targeting agents using specific structural signaling features recognizable by cells as mitochondrial targeting sequences are discussed. A method for delivering these agents effectively into cells and mitochondria where they act as electron scavengers by way of certain targeting sequences is also disclosed. Mitochondria dysfunction and cell death by way of apoptosis is inhibited as a result of the ROS-scavenging activity, thereby increasing the survival rate of the patient. In a preferred embodiment, the compositions and methods may be administered therapeutically in the field to patients with profound hemorrhagic shock so that survival could be prolonged until it is feasible to obtain surgical control of the bleeding vessels.

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Pittsburgh, PA, United States of America

Yulia Tyurina