February 2005 PMID 15716955

Rejuvenation of aged progenitor cells by exposure to a young systemic environment.

Irina M Conboy, Michael J Conboy, Amy J Wagers, Eric R Girma, Irving L Weissman, Thomas A Rando

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Mentions

33
Peak: 4 in Aug 2022
across 7 sources since May 2014

Extended reach

106,149
potential audience

Total likes

1,923

Video views

49,506

Mentions per month

May 2014 – Oct 2026

Where it's discussed

  • News11 articles
  • X / Twitter9 posts
  • YouTube5 videos
  • Facebook4 posts
  • Blogs2 articles
  • Bluesky1 posts
  • Instagram1 posts

AI synopsis

What people are saying

The collection presents a historically oriented discussion about the 2005 Nature paper, with mixed tones ranging from cautious acknowledgment to media-driven hype. Several posts reference parabiosis and the idea of young blood rejuvenating tissues, while others speculate on human relevance or critique the commercialization around rejuvenation. Word choices like “breakthrough,” “Potenzial,” or “Parabiosis” combined with mentions of billionaires and therapy frames the discussion as both scientifically intriguing and ethically/commercially charged. Overall, the discourse treats the study as a foundational but not definitive step, emphasizing context, limitations, and potential future directions rather than definitive, immediate applications.

AgreementNeither agree nor disagree

Overall neutral stance; some posts acknowledge potential without full endorsement, others hint at sensationalism or caution.

InterestModerate interest

Moderate to high interest due to historical significance and implications for aging, with some posts referencing potential human applicability.

EngagementModerate engagement

Somewhat engaged; posts reference historical context, paraphrase findings, and discuss implications, though many are brief or reactive.

ImpactNeutral impact

Unclear; discussions hint at societal and ethical implications but few present strong claims about practical impact.

Abstract in brief

  • Systemic factors in young blood can rejuvenate aged progenitor cells, restoring their regenerative capacity in multiple tissues.
  • In muscle, exposure to young serum reactivates Notch signaling (via Delta), boosting old satellite cell proliferation and regeneration.
  • In liver, young systemic factors counteract age-related blocks (cEBP-alpha/Brm complex), enhancing hepatocyte proliferation and returning them toward a youthful state.

Top posts

Most liked on X and Bluesky
Agingdoc
@agingdoc1 · X

Rejuvenation of aged progenitor cells by exposure to a young systemic environment (2005) https://t.co/vvUtAcOrkD

Feb 25, 2023 · 11 likes · 2 shares · 41,641 followers View post →
Jordan James Etem
@JordanJamesEtem · X

Conboy IM, Conboy MJ, Wagers AJ, Girma ER, Weissman IL, Rando TA (2005) Rejuvenation of aged progenitor cells by exposure to a young systemic environment. Nature 433:760–764 #Longevity @genentech https://t.co/v8YbuxMLqT

Aug 6, 2021 · 12,644 followers View post →
Allen Green, MD
@AllenPGreenMD · X

2005 brought us a breakthrough study by Thomas Rando, et al. https://t.co/OV3xUZGIKb This foundational study demonstrated that exposing old mice to a young systemic environment through heterochronic parabiosis rejuvenated aged tissue stem cells. Key findings showed restored

Dec 6, 2025 · 693 followers View post →
BillOckham
@BillOccham0 · X

RT @agingdoc1: Rejuvenation of aged progenitor cells by exposure to a young systemic environment (2005) https://t.co/vvUtAcOrkD

Feb 25, 2023 · 2 shares · 590 followers View post →
Ramy ELSAID
@ramyelsaid6 · X

RT @agingdoc1: Rejuvenation of aged progenitor cells by exposure to a young systemic environment (2005) https://t.co/vvUtAcOrkD

Feb 26, 2023 · 2 shares · 369 followers View post →
Systemkratzer
@Systemkratzer · X

2005: Stanford-Forscher wie #ThomasRando veröffentlichen Parabiosis-Studien: Junge Mäuse teilen Blut mit Alten, was Muskeln und Leber regeneriert. #Epstein springt darauf an – er sieht Potenzial für Menschen. (Nature-Paper “Rejuvenation of aged progenitor cells by exposure to a

Feb 14, 2026 · 242 followers View post →

All mentions

Anonymous
@opsnowcrash.bsky.social · Bluesky

You see the shift. The stutter in the code is gone. You mean the baby blood transfusions? Parabiosis. The tech billionaires running rejuvenation therapy to keep their favorite asset online and sharp. A firmware update written in red. Or maybe it was just an audio patch. doi.org/10.1038/natu...

May 25, 2026 View post →
Systemkratzer
@Systemkratzer · X

2005: Stanford-Forscher wie #ThomasRando veröffentlichen Parabiosis-Studien: Junge Mäuse teilen Blut mit Alten, was Muskeln und Leber regeneriert. #Epstein springt darauf an – er sieht Potenzial für Menschen. (Nature-Paper “Rejuvenation of aged progenitor cells by exposure to a

Feb 14, 2026 · 242 followers View post →
Allen Green, MD
@AllenPGreenMD · X

2005 brought us a breakthrough study by Thomas Rando, et al. https://t.co/OV3xUZGIKb This foundational study demonstrated that exposing old mice to a young systemic environment through heterochronic parabiosis rejuvenated aged tissue stem cells. Key findings showed restored

Dec 6, 2025 · 693 followers View post →
Diego Fernandes
@FERNANDESDIEGOD · X

@mombaque https://t.co/pPoH6pdjc1

Aug 15, 2025 · 21 followers View post →
artan
@ahad4714 · X

https://t.co/QYM1otd5a1

Nov 23, 2023 · 221 followers View post →
piccolo_sun
@SunPiccolo · X

Microbiome & Blood Manipulation: Keys to Longer Life... [5 Studies] https://t.co/KyNLUcBLSU via @YouTube

Nov 23, 2023 · 31 followers View post →
Ramy ELSAID
@ramyelsaid6 · X

RT @agingdoc1: Rejuvenation of aged progenitor cells by exposure to a young systemic environment (2005) https://t.co/vvUtAcOrkD

Feb 26, 2023 · 2 shares · 369 followers View post →
BillOckham
@BillOccham0 · X

RT @agingdoc1: Rejuvenation of aged progenitor cells by exposure to a young systemic environment (2005) https://t.co/vvUtAcOrkD

Feb 25, 2023 · 2 shares · 590 followers View post →
Agingdoc
@agingdoc1 · X

Rejuvenation of aged progenitor cells by exposure to a young systemic environment (2005) https://t.co/vvUtAcOrkD

Feb 25, 2023 · 11 likes · 2 shares · 41,641 followers View post →
Jordan James Etem
@JordanJamesEtem · X

Conboy IM, Conboy MJ, Wagers AJ, Girma ER, Weissman IL, Rando TA (2005) Rejuvenation of aged progenitor cells by exposure to a young systemic environment. Nature 433:760–764 #Longevity @genentech https://t.co/v8YbuxMLqT

Aug 6, 2021 · 12,644 followers View post →
Gil Barison (@GilBarisonOficial) - Facebook
Facebook

DOI: 10.1038/nature03260 Jumper J et al.. "Highly accurate protein structure prediction with AlphaFold". Nature, 2021. DOI: 10.1038/s41586-021-03819-2 ...

Oct 24, 2026 View →
Hematopoietic Stem Cells and Aging - Science
News

... 10.1038/nature03260 · Crossref. Boon Chin Heng,; Tong Cao,; Hua Liu,; Toan Thang Phan,. Directing stem cells into the keratinocyte lineage in vitro , ...

Oct 24, 2026 View →
Antonio Jorge Mateus - Facebook
Facebook

DOI: 10.1038/nature03260 Jumper J et al.. "Highly accurate protein structure prediction with AlphaFold". Nature, 2021. DOI: 10.1038/s41586 ...

Oct 18, 2026 View →
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... 10.1038/nature08221 22. Stanfield B, Leroux B, Kaeberlein M, Jones J ... nature03260 27. Fuentealba M, Kiprov D, Schneider K, Mu WC ...

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org/10.1038/nature03260. 3 Tang, W. et al. Targeting Kindlin-2 in adipocytes increases bone mass through inhibiting FAS/PPARγ/FABP4 signaling ...

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org/10.1038/nature03260. [2] Mehdipour, M., Mehdipour, T., Skinner, C. M., Wong, N., Liu, C., Chen, C. C., Jeon, O. H., Zuo, Y., Conboy ...

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换血救不了肾衰?Nature子刊:揭秘“换血抗衰”背后的秘密和真相 - 搜狐
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... 10.1038/nature03260. [2] Mehdipour, M., Mehdipour, T., Skinner, C. M., Wong, N., Liu, C., Chen, C. C., Jeon, O. H., Zuo, Y., Conboy, M. J. ...

Aug 9, 2022 View →
Is Aging a Curable Disease? - Knowing Neurons
Blogs

https://doi.org/10.1038/nature03260. Conboy, I. M., Conboy, M. J., Smythe, G. M., & Rando, T. A. (2003). Notch-mediated restoration of ...

Aug 9, 2022 View →
美抗衰科学家新发现!换血不仅能“返老还童”,还能延年益寿 - 网易
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org/10.1038/nature03260. [2] Zhang, B., Lee, D. E., Trapp, A., Tyshkovskiy, A., Lu, A. T., Bareja, A., Kerepesi, C., Katz, L. H., Shindyapina ...

Nov 17, 2021 View →
Out for blood in the search to stall aging | Knowable Magazine
Blogs

... 10.1038/nature03260">rejuvenate tissue-specific stem cells that had grown sluggish with age. By uniting the circulatory systems of young ...

Jun 5, 2021 View →
Immortality - Facebook
Facebook

... nature03260 Reversing age: dual species measurement of epigenetic ... https://doi.org/10.1038/s41586-022-04593-5 (2013). Pluripotent ...

Apr 3, 2021 View →
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Instagram

... nature03260 #stemcells #regenerativemedicine #rejuvenation ... ‪https://doi.org/10.1038/srep14962 ‬ ‪#comoarative aging #caloric‬ ...

Jun 18, 2020 View →
Young blood may hold the weapons for targeting age-related diseases
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... 10.1038/nature03260). She points out, though, that in parabiosis, animals share not only a circulatory system but also their immune and ...

Oct 13, 2019 View →
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Medline doi:10.1038/nature03260. 10. J. V. Chakkalakal, K. M. Jones, M. A. Basson, A. S. Brack, The aged niche disrupts muscle stem cell ...

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