123 results found
    1. Computational and Systems Biology
    2. Chromosomes and Gene Expression

    Stochastic modelling, Bayesian inference, and new in vivo measurements elucidate the debated mtDNA bottleneck mechanism

    Iain G Johnston et al.
    New modelling, statistics, and experiments show that cellular populations of mitochondrial DNA (mtDNA) evolve during development according to solvable stochastic dynamics involving binomial partitioning and random turnover, facilitating a predictive and quantitative theory of the mtDNA bottleneck.
    1. Developmental Biology

    Electron transport chain biogenesis activated by a JNK-insulin-Myc relay primes mitochondrial inheritance in Drosophila

    Zong-Heng Wang et al.
    An insulin-Myc feed-forward loop triggered by transient JNK boosts transcription of genes essential for mitochondrial respiration and biogenesis during early oogenesis to support massive mtDNA replication and inheritance in Drosophila.
    1. Biochemistry and Chemical Biology

    Unexpected sequences and structures of mtDNA required for efficient transcription from the first heavy-strand promoter

    Akira Uchida et al.
    Hypervariable regions of mtDNA contribute to transcriptional regulation by serving as sites for TFAM binding and looping.
    1. Genetics and Genomics

    Introduction of a male-harming mitochondrial haplotype via ‘Trojan Females’ achieves population suppression in fruit flies

    Jonci Nikolai Wolff et al.
    Mitochondrial genomes harbor male-fertility-reducing mutations that can be harnessed to control population viability as a novel approach to control economic and environmental pests.
    1. Cancer Biology

    Horizontal transfer of whole mitochondria restores tumorigenic potential in mitochondrial DNA-deficient cancer cells

    Lan-Feng Dong et al.
    A genetic approach documents that mitochondrial DNA moves from donor cells to recipient mtDNA-depleted cells in whole mitochondria and that this restores mitochondrial respiration and the capacity of the cells to form tumours.
    1. Computational and Systems Biology
    2. Cancer Biology

    Mitochondrial DNA copy number variation across human cancers

    Ed Reznik et al.
    Many tumors are depleted of mitochondrial DNA; this depletion is associated with changes in gene expression and with the incidence of critical somatic mutations and alterations.
    1. Cancer Biology
    2. Computational and Systems Biology

    Mitochondrial respiratory gene expression is suppressed in many cancers

    Ed Reznik et al.
    Building on previous work (Reznik et al., 2016), independent measurements of mitochondrial genome copy number and expression indicate that several solid tumor types suppress respiratory metabolism compared to normal tissue.
    1. Cancer Biology

    Mitochondrial genetic diversity, selection and recombination in a canine transmissible cancer

    Andrea Strakova et al.
    Genetics of a canine transmissible tumour show how the world’s oldest cancer “metastasised” through the global dog population – and captured, maintained and rearranged its mitochondrial DNA along the way.
    1. Cell Biology

    Stable transplantation of human mitochondrial DNA by high-throughput, pressurized isolated mitochondrial delivery

    Alexander J Sercel et al.
    Applied pressure enables efficient isolated mitochondrial transfer and stable mitochondrial DNA (mtDNA) transplantation into a range of mtDNA-depleted cell types to restore respiration.
    1. Cell Biology
    2. Genetics and Genomics

    A mitochondrial DNA hypomorph of cytochrome oxidase specifically impairs male fertility in Drosophila melanogaster

    Maulik R Patel et al.
    A 'male-harming' mtDNA mutation has been identified in Drosophila and impairs male fertility without impairing other male or female functions.

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