Evidence map›Paper›PMID 31757848›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2019

Bottleneck and selection in the germline and maternal age influence transmission of mitochondrial DNA in human pedigrees.

Arslan A Zaidi, Peter R Wilton, Marcia Shu-Wei Su, Ian M Paul, Barbara Arbeithuber, Kate Anthony, Anton Nekrutenko, Rasmus Nielsen, Kateryna D Makova

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

71 citing papers in PubMed, 1 synthesis or guideline pooled it.

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11 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Arslan A ZaidiDepartment of Biology, Penn State University, University Park, PA 16802.ORCID 0000-0002-2155-8367
Peter R WiltonDepartment of Integrative Biology, University of California, Berkeley, CA 94720.
Marcia Shu-Wei SuDepartment of Biology, Penn State University, University Park, PA 16802.
Ian M PaulDepartment of Pediatrics, Penn State College of Medicine, Hershey, PA 17033.
Barbara ArbeithuberDepartment of Biology, Penn State University, University Park, PA 16802.
Kate AnthonyDepartment of Biology, Penn State University, University Park, PA 16802.
Anton NekrutenkoDepartment of Biochemistry and Molecular Biology, Penn State University, University Park, PA 16802.
Rasmus NielsenDepartment of Integrative Biology, University of California, Berkeley, CA 94720; rasmus_nielsen@berkeley.edu kdm16@psu.edu.
Kateryna D MakovaDepartment of Biology, Penn State University, University Park, PA 16802; rasmus_nielsen@berkeley.edu kdm16@psu.edu.ORCID 0000-0002-6212-9526

Funding

The Dynamics of Mitochondrial MutationsR01GM116044 · NIGMS · PENNSYLVANIA STATE UNIVERSITY, THE · PI MAKOVA, KATERYNA, NIELSEN, RASMUS · 2015 to 2018
$2.4M
NIGMS NIH HHS R01 GM116044
6 · The paper itself

Abstract

Heteroplasmy-the presence of multiple mitochondrial DNA (mtDNA) haplotypes in an individual-can lead to numerous mitochondrial diseases. The presentation of such diseases depends on the frequency of the heteroplasmic variant in tissues, which, in turn, depends on the dynamics of mtDNA transmissions during germline and somatic development. Thus, understanding and predicting these dynamics between generations and within individuals is medically relevant. Here, we study patterns of heteroplasmy in 2 tissues from each of 345 humans in 96 multigenerational families, each with, at least, 2 siblings (a total of 249 mother-child transmissions). This experimental design has allowed us to estimate the timing of mtDNA mutations, drift, and selection with unprecedented precision. Our results are remarkably concordant between 2 complementary population-genetic approaches. We find evidence for a severe germline bottleneck (7-10 mtDNA segregating units) that occurs independently in different oocyte lineages from the same mother, while somatic bottlenecks are less severe. We demonstrate that divergence between mother and offspring increases with the mother's age at childbirth, likely due to continued drift of heteroplasmy frequencies in oocytes under meiotic arrest. We show that this period is also accompanied by mutation accumulation leading to more de novo mutations in children born to older mothers. We show that heteroplasmic variants at intermediate frequencies can segregate for many generations in the human population, despite the strong germline bottleneck. We show that selection acts during germline development to keep the frequency of putatively deleterious variants from rising. Our findings have important applications for clinical genetics and genetic counseling.

Indexed as

Maternal AgeAdolescentAdultAgedAged, 80 and overChildChild, PreschoolDNA, MitochondrialFemaleGenetics, PopulationGerm CellsHuman GeneticsHumansMaleMiddle AgedMitochondriaDNA, Mitochondrialbottleneckheteroplasmymitochondrion

Identifiers

PMID31757848
PMCPMC6911200

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.