90 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. 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. 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. Human Biology and Medicine

    Stochastic homeostasis in human airway epithelium is achieved by neutral competition of basal cell progenitors

    Vitor H Teixeira et al.
    Cell replenishment within the airways is governed by the random division of a population of basal progenitor cells, in a process that is accelerated in smokers.
    1. Computational and Systems Biology
    2. Human Biology and Medicine

    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. 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
    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. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Nuclear genetic regulation of the human mitochondrial transcriptome

    Aminah T Ali et al.
    Common nuclear genetic variants are associated with fundamental biological processes occurring in human mitochondria and potentially point to novel roles for nuclear genes in transcriptional regulation of the mitochondrial genome.
    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. 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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