摘要:
Animal models and methods wherein homoplasmic and heteroplasmic mtDNA mutation(s) are induced in an animal (e.g., a mouse) to cause or facilitate the development of a disorder (e.g., disease, malformation, defect, abnormality or other disorder). In at least some embodiments, the mtDNA mutation(s) will cause or facilitate the development of an age-related disorder, such as a cardiac disease, cardiomyopathy, muscle disease, cancer, abnormaly in tissues of high cellular turnover, heart dysfunction, graying of hair, alopecia, auditory function loss, cochlear degeneration, immune cell loss, anemia, male germ cell loss leading to lack of sperm and infertility, skeletal muscle mass loss (sarcopenia), neurodegeneration, increased presence of apoptotic markers, and loss of bone mass.
摘要:
Animal models and methods wherein homoplasmic and heteroplasmic mtDNA mutation(s) are induced in an animal (e.g., a mouse) to cause or facilitate the development of a disorder (e.g., disease, malformation, defect, abnormality or other disorder). In at least some embodiments, the mtDNA mutation(s) will cause or facilitate the development of an age-related disorder, such as a cardiac disease, cardiomyopathy, muscle disease, cancer, abnormaly in tissues of high cellular turnover, heart dysfunction, graying of hair, alopecia, auditory function loss, cochlear degeneration, immune cell loss, anemia, male germ cell loss leading to lack of sperm and infertility, skeletal muscle mass loss (sarcopenia), neurodegeneration, increased presence of apoptotic markers, and loss of bone mass.
摘要:
A microfluidic sensor device includes a substrate having patterned thereon at least one Ag/AgCl electrode (working electrode) and an inner chamber overlying the at least one Ag/AgCl electrode. The device includes an ion selective permeable membrane permeable to TPP+ disposed on one side of the first chamber and a sensing chamber overlying the ion selective permeable membrane. A separate reference electrode is inserted into the sensing chamber. The working electrode and reference electrode are coupled to a voltmeter to measure voltage. This voltage can then be translated into a TPP+ concentration which is used to determine the mitochondrial membrane potential (ΔΨm).
摘要:
Provided are methods of identifying Metabolic Syndrome phenotypes for an organism or a biological sample derived therefrom which methods are based on detecting a polymorphism, haplotype, haplotype group, or haplotype subgroup in the mitochondrial genome of the organism and correlating the polymorphism or haplotype to a Metabolic Syndrome phenotype. Also provided are systems or kits for the detection of such polymorphisms or haplotypes and the correlation of the polymorphisms or haplotypes to a Metabolic Syndrome phenotype. Provided are methods of identifying a modulator of a Metabolic Syndrome phenotype and kits for the treatment of a Metabolic Syndrome phenotype.
摘要:
Methods of treating disorders such as neurofibromatosis-1 are provided, including methods in which catalytic antioxidants such as metalloporphyrins are administered. Methods of regulating longevity, and methods and systems for screening for modulators of aging or longevity, are also provided. In addition, related transgenic animals are described.
摘要:
The present invention relates a method and manufacture for detecting neuromuscular disease, particularly Leber's hereditary optic neuropathy, by ascertaining whether a point mutation has occurred at the 11778 nucleotide position in the mitochondrial DNA of a patient. The invention provides methods to detect this mutation including digestion of the patient's mtDNA with restriction endonucleases followed by analysis of the resulting fragments, differential hybridization of oligonucleotides procedures, and differential PCR techniques.
摘要:
Methods of treating disorders such as neurofibromatosis-1 are provided, including methods in which catalytic antioxidants such as metalloporphyrins are administered. Methods of regulating longevity, and methods and systems for screening for modulators of aging or longevity, are also provided. In addition, related transgenic animals are described.
摘要:
Described are methods for inactivating adenine nucleotide transporter proteins in specific tissues of a transgenic nonhuman animal using a conditional knockin/knockout technology such as the Cre-LoxP, Flip-FLP recombinase, or Tet-on/off technologies. Specifically, the Ant2 gene is functionally inactivated in a mouse in liver, with or without the concurrent inactivation of the Ant1 gene. The result is an animal in which the Ant2 gene and accompanying ANT 2 protein is absent in one or more tissues, either in the presence or absence of the Ant1 gene and accompanying protein. The resulting animals, cells, mitochondria, and subcelluar fractions such as the mitochondrial permeability transition pore can then be used to identify agents that affect animal and/or subcellular function via a direct or indirect interaction with the ANT2 protein and/or its Ant2 gene.
摘要:
A microfluidic sensor device includes a substrate having patterned thereon at least one Ag/AgCl electrode (working electrode) and an inner chamber overlying the at least one Ag/AgCl electrode. The device includes an ion selective permeable membrane permeable to TPP+ disposed on one side of the first chamber and a sensing chamber overlying the ion selective permeable membrane. A separate reference electrode is inserted into the sensing chamber. The working electrode and reference electrode are coupled to a voltmeter to measure voltage. This voltage can then be translated into a TPP+ concentration which is used to determine the mitochondrial membrane potential (ΔΨm).
摘要:
A method is provided for identifying a subject likely to have, or at risk of developing a disease condition correlated with increased reactive oxygen species (ROS), including cancer, by identifying in the subject a missense mutation in a nucleic acid of Complex III, IV and/or V of the OXPHOS system. This invention also provides a method of identifying a likelihood of having a heritable predisposition to cancer by detecting a homoplasmic missense mutation in non-tumor tissue of an OXPHOS system gene. This invention also provides a method for detecting likelihood of having cancer, predisposition to cancer, and likelihood of passing a predisposition to cancer to progeny involving identifying in non-tumor tissue of the subject a missense mutation in a complex III, IV and/or V gene of the mitochondrial OXPHOS system. The mutation may be a nuclear or mitochondrial mutation. The invention has been exemplified with respect to prostate cancer. When the mutation is homoplasmic in non-tumor tissue this is an indication it is an inherited and inheritable trait, and that the subject is likely to pass on the mutation to her progeny in the case of mutations in mitochondrial DNA or his or her progeny in the case of mutations in nuclear DNA. Both homoplasmic and heteroplasmic mutations in non-tumor tissue can indicate the presence of cancer.