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In Vivo Amelioration of Age-Associated Hallmarks by Partial Reprogramming.

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Ocampo, Alejandro, Reddy, Pradeep, Martinez-Redondo, Paloma, Platero-Luengo, Aida, Hatanaka, Fumiyuki, Hishida, Tomoaki, Li, Mo, Lam, David +14 more·2016·Cell

Abstract

Aging is the major risk factor for many human diseases. In vitro studies have demonstrated that cellular reprogramming to pluripotency reverses cellular age, but alteration of the aging process through reprogramming has not been directly demonstrated in vivo. Here, we report that partial reprogramming by short-term cyclic expression of Oct4, Sox2, Klf4, and c-Myc (OSKM) ameliorates cellular and physiological hallmarks of aging and prolongs lifespan in a mouse model of premature aging. Similarly, expression of OSKM in vivo improves recovery from metabolic disease and muscle injury in older wild-type mice. The amelioration of age-associated phenotypes by epigenetic remodeling during cellular reprogramming highlights the role of epigenetic dysregulation as a driver of mammalian aging. Establishing in vivo platforms to modulate age-associated epigenetic marks may provide further insights into the biology of aging.

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Crossref · 10.1016/j.cell.2016.11.052

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  • Numerous tissues, including brain, kidney, and muscle, have been reprogrammed without causing cancer.

    “Numerous tissues, including brain tissue, kidney, and muscle, have now been reprogrammed without causing cancer [7, 8, 22, 24, 25].”

    From Chemically induced reprogramming to reverse cellular aging (2023) · cites this paper as [22]

    The section “Cyclic In Vivo Induction of Reprogramming Factors Does Not Lead to Tumor Formation” reports no signs of cancer in the organs analyzed after cyclic OSKM induction in mice. The paper also reports effects in kidney and skeletal muscle, but our copy does not establish cancer-free reprogramming of brain tissue. Its finding is limited to the tested mouse protocol and organs, not numerous tissues generally. (LLM, conf=0.87)

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  • Teratoma formation has been observed in partially reprogrammed animals, particularly when c-Myc is used.

    “Teratoma formation has been observed in partially reprogrammed animals, particularly when c-Myc is used in the partial rejuvenation cocktail (Abad et al., 2013; Ocampo et al., 2016; Ohnishi et al., 2014; Senís et al., 2018)”

    From Gene Therapy-Mediated Partial Reprogramming Extends Lifespan and Reverses Age-Related Changes in Aged Mice (2024) · cites this paper as Ocampo et al., 2016

    In “Cyclic In Vivo Induction of Reprogramming Factors Does Not Lead to Tumor Formation” (page not provided), the authors report teratomas in mice given cyclic OSKM induction with two copies of the reprogramming cassette. They do not establish that teratomas occur particularly because c-Myc is included: their comparison varies cassette copy number, not c-Myc use, and the single-copy protocol showed no tumors. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Cyclic expression of Yamanaka factors Oct4, Sox2, Klf4, and Myc alleviates symptoms and extends lifespan of progeroid mice and other aspects of aging.

    “The cyclic expression of Yamanaka factors Oct4, Sox2, Klf4 and Myc (OSKM) (Takahashi and Yamanaka, 2006) alleviates the symptoms and extends the lifespan of progeroid mice and other aspects of aging (Ocampo et al., 2016; Sarkar et al., 2020).”

    From Loss of epigenetic information as a cause of mammalian aging (2023) · cites this paper as Ocampo et al., 2016

  • In a HGPS mouse model, cyclic transgene-mediated expression of OSKM alleviates symptoms and extends lifespan.

    “In a premature ageing mouse model of Hutchinson-Gilford progeria syndrome (HGPS), cyclic transgene-mediated expression of these four genes alleviates symptoms and extends lifespan, raising the possibility that OSKM might counteract normal ageing, too16.”
  • Continuous expression of all four Yamanaka factors in normal mice often induces teratomas or is fatal within days, ostensibly due to tissue dysplasia.

    “Continuous expression of all four factors in normal mice, however, often induces teratomas17–19 or is fatal within days16, ostensibly due to tissue dysplasia18.”

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Authors
Ocampo, A., Reddy, P., Martinez-Redondo, P., Platero-Luengo, A., Hatanaka, F., Hishida, T., Li, M., Lam, D., Kurita, M., Beyret, E., Araoka, T., Vazquez-Ferrer, E., Donoso, D., Roman, J. L., Xu, J., Rodriguez Esteban, C., Nuñez, G., Nuñez Delicado, E., Campistol, J. M., Guillen, I., Guillen, P., & Izpisua Belmonte, J. C.
Affiliations
  • Salk Institute for Biological Studies (US)
  • Consorci Institut D'Investigacions Biomediques August Pi I Sunyer (ES)
Venue
Cell
Publisher
Elsevier BV
Published
2016-12
Volume
167
Issue
7
Pages
1719-1733.e12
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2565424224
Cited by
988
References
58
Citations by year
2026: 148 · 2025: 118 · 2024: 112 · 2023: 128 · 2022: 105 · 2021: 110 · 2020: 71 · 2019: 73 · 2018: 62 · 2017: 58 · 2016: 2
FWCI
33.79
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Deposito de Investigacion Universidad de Sevilla (University of Seville) (submittedVersion, cc-by-nc-nd)
Funders
  • Glenn Foundation for Medical Research
  • Muscular Dystrophy Association
  • Leona M. and Harry B. Helmsley Charitable Trust (#2012-PG-MED002, MED002)
  • Uehara Memorial Foundation
  • Moxie Foundation
  • NOMIS Stiftung
  • National Institutes of Health
  • University of California, San Diego
  • Japan Society for the Promotion of Science
  • National Cancer Institute (P30CA014195)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Pluripotent Stem Cells Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
Keywords
partial reprogramming, cellular aging, OSKM, Oct4, SOX2, KLF4, c-Myc, premature aging, lifespan extension, epigenetic remodeling, metabolic disorders, muscle damage, in vivo reprogramming
MeSH terms
Kruppel-Like Factor 4, Aging, Animals, Diabetes Mellitus, Type 2, Humans, Metabolic Diseases, Pancreas, Transcription Factors, Aging, Premature, Models, Animal, Lamin Type A, Epigenesis, Genetic, Mice, Sarcopenia, Induced Pluripotent Stem Cells, Cellular Reprogramming

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