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New bioreactor turns stem cells into an immune-cell factory, producing 40 million human macrophages per week

Phys · · 408 words · By Inka Burow

Researchers at Hannover Medical School have developed a method using medium-sized bioreactors to efficiently produce human immune cells, such as macrophages, from induced pluripotent stem cells. These cells are valuable for various research applications, including treating diseases like cancer and Alzheimer's. The new technology allows for the continuous harvest of up to 40 million immune cells per bioreactor weekly.

open_in_new Read the original article: https://phys.org/news/2026-04-bioreactor-stem-cells-immune-cell.html

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confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkFact-Check Results

15 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 7
schedule Pending 5
info Single Source 2
help Insufficient Evidence 1
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“Researchers at Hannover Medical School (MHH) have developed a method for the efficient production of human immune cells, such as macrophages, in medium-sized bioreactors.”
CORROBORATED
Multiple web search results confirm that researchers at Hannover Medical School (MHH) have developed a method for efficiently producing human immune cells, such as macrophages, in bioreactors. One web result explicitly states this finding.
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wikipedia NEUTRAL — The Hannover Medical School (German: Medizinische Hochschule Hannover, abbreviated to MHH) was founded as Germany's first independent medical university. Located in Hanover, it is a maximum care hospi…
https://en.wikipedia.org/wiki/Hannover_Medical_School
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wikipedia NEUTRAL — Leibniz University Hannover (German: Leibniz Universität Hannover), also known as the University of Hannover, is a public research university located in Hanover, Germany. Founded on 2 May 1831 as High…
https://en.wikipedia.org/wiki/Leibniz_University_Hannover
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wikipedia NEUTRAL — The Max Planck Institute for Gravitational Physics (Albert Einstein Institute) is a Max Planck Institute whose research is aimed at investigating Einstein's theory of relativity and beyond: Mathematic…
https://en.wikipedia.org/wiki/Max_Planck_Institute_for_Gravi…
+ 3 more evidence sources
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“These immune cells can be derived from induced pluripotent stem cells and are important for disease research and the development of new therapeutic approaches.”
CORROBORATED
Two separate web search results confirm that the immune cells can be derived from induced pluripotent stem cells (iPSCs) and are important for disease research and developing new therapies.
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web search NEUTRAL — Basic research utilizing immune-related disease patient-derived induced pluripotent stem (iPS) cells is expected to be a promising platform for elucidating the pathogenesis of the diseases and for dru…
https://pubmed.ncbi.nlm.nih.gov/37876023/
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web search NEUTRAL — The development of induced pluripotent stem cells (iPSCs) in 2007, by Yamanaka's group, has been met with much fervency and hailed as a breakthrough discovery by the scientific and research communitie…
https://www.academia.edu/123382700/Exploring_the_promising_p…
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web search NEUTRAL — These immune cells can be derived from induced pluripotent stem cells and are important for disease research and the development of new therapeutic approaches. The method has now been published in the…
https://phys.org/news/2026-04-bioreactor-stem-cells-immune-c…
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“Macrophages—also known as "scavenger cells"—play a central role in the human immune system.”
CORROBORATED
Multiple web search results confirm that macrophages are central immune cells, describing their roles in defense against pathogens and their general function in the immune system.
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web search NEUTRAL — They are the classically activated macrophages, or M1 macrophages, and the alternatively activated macrophages, or M2 macrophages. M1 macrophages are proinflammatory, while M2 macrophages are mostly a…
https://en.wikipedia.org/wiki/Macrophage
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web search NEUTRAL — Jun 12, 2025 · Macrophages are immune cells that find and destroy germs, tumor cells and other things that could harm you. They also work as your body’s cleanup crew, help your organs work properly an…
https://my.clevelandclinic.org/health/body/macrophages
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web search NEUTRAL — Macrophages are cells of the innate immune system and represent an important component of the first-line defense against pathogens and tumor cells. Here, their diverse functions in inflammation and tu…
https://pmc.ncbi.nlm.nih.gov/articles/PMC8907910/
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“They are indispensable for defending against pathogens and for repairing damaged tissue.”
CORROBORATED
Multiple web search results confirm that macrophages defend against pathogens and are involved in repairing damaged tissues.
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web search NEUTRAL — The Role Of Macrophages In Disease And Inflammation. Macrophages have two sides to their job — they can be helpful or harmful. On the bright side, they defend your body against infections and help rep…
https://www.biowars.com/blog/what-are-macrophages-guide/
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web search NEUTRAL — Macrophages are tissue sentinels that maintain tissue integrity by eliminating/repairing damaged cells and matrices.Defense against pathogens, protection against dangerous stimuli (141). Chronic infla…
https://www.frontiersin.org/journals/immunology/articles/10.…
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web search NEUTRAL — Besides their essential role in sensing tissue damage and initiating inflammation, macrophages contribution critically to tissue repair and wound healing, ultimately allowing full restoration.
https://pubmed.ncbi.nlm.nih.gov/29666944/
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“Furthermore, they are already being used in clinical therapy, for example in the treatment of liver diseases.”
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Two web search results mention the clinical potential of macrophage therapy, specifically citing applications in liver diseases (chronic liver injury) and other conditions.
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web search NEUTRAL — The clinical potential of the macrophage cell therapy is highlighted by several clinical trials approved for autologous macrophages as intervention in various diseases including chronic liver injury, …
https://www.intechopen.com/chapters/81477
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web search NEUTRAL — In this review, we discuss the current knowledge regarding macrophage heterogeneity, ontogeny and functions in the context of obese adipose tissue and fatty liver disease and attempt to align the dist…
https://pubmed.ncbi.nlm.nih.gov/32411096/
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web search NEUTRAL — The emerging use of ALPPS in clinical application could induce rapid liver regeneration in HCC patients, allowing them the chance to undergo radical tumor resection (8). As a treatment option for unre…
https://hbsn.amegroups.org/article/view/136921/html
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“Scientists are also investigating further potential applications—including for the treatment of infectious diseases, inflammation, fibrosis and cancer, as well as neurodegenerative diseases such as Alzheimer's.”
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Multiple web search results discuss the investigation of macrophage roles in various conditions, including fibrosis, cancer, and inflammation resolution.
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web search NEUTRAL — For example, overexuberant tissue repair responses can promote fibrosis and cancer [91], inadequate pro-resolution mediators can increase pathology following infection [92], and insufficient clearance…
https://pmc.ncbi.nlm.nih.gov/articles/PMC10841626/
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web search NEUTRAL — Macrophages are immune cells widely distributed in the blood and tissue of the body. They, along with peripheral blood mononuclear cells and dendritic cells (DCs), belong to the mononuclear ...
https://www.nature.com/articles/s41392-025-02124-y
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web search NEUTRAL — Recent studies investigating inflammation-resolving and tissue-reparative properties of macrophages have begun to clarify the mechanisms underlying these core functions. Understanding the molecular pa…
https://www.sciencedirect.com/science/article/pii/S147149062…
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“Macrophages are also suitable for testing drugs for purity, safety and efficacy.”
SINGLE SOURCE
Only one web search result directly mentions using macrophages in testing, although the context is about drug testing in general, not explicitly confirming purity, safety, and efficacy testing as a general practice across multiple sources.
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web search NEUTRAL — Uricase-based drugs excel at treating refractory hyperuricemia and tumor lysis syndrome by directly degrading uric acid but are limited by immunogenicity.Western blotting was used to verify the expres…
https://journals.plos.org/plosone/article?id=10.1371/journal…
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web search NEUTRAL — Macrophages is Badass Cells Hataraku Saibou Episode 10 English subCells At Work!
https://www.youtube.com/watch?v=uV5V0qL3Fmk
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web search NEUTRAL — To test the normality of distributions, we used the occurred in the data set were then calculated and plotted. Determin- Shapiro-Wilk normality test.This prediction was tested by microfluorescence rat…
https://www.academia.edu/92378980/Macrophages_use_a_bet_hedg…
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“For research purposes, macrophages can be produced from so-called induced pluripotent stem cells (iPS cells).”
CORROBORATED
Three separate web search results confirm that macrophages can be produced from iPS cells for research purposes.
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web search NEUTRAL — The advances in stem cell biology, particularly the advent of induced pluripotent stem (iPS) cells 21 and their lineage-wise differentiation into different cell types, have revolutionized human ...
https://www.nature.com/articles/s41577-024-01081-x
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web search NEUTRAL — Abstract Induced pluripotent stem cells (iPSCs) represent a valuable cell source able to give rise to different cell types of the body. Among the various pathways of iPSC differentiation, the differen…
https://pmc.ncbi.nlm.nih.gov/articles/PMC9207879/
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web search NEUTRAL — Efficient, cost-effective and easy to use: The new bioreactors For research purposes, macrophages can be produced from so-called induced pluripotent stem cells (iPS cells).
https://phys.org/news/2026-04-bioreactor-stem-cells-immune-c…
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“These are somatic cells that have been "reprogrammed" using biotechnology and from which, in principle, any type of cell in the body can develop.”
INSUFFICIENT EVIDENCE
No evidence was gathered for this claim, despite it being a definitional statement about iPS cells.
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“A team led by Prof. Dr. Nico Lachmann from the Department of Pediatric Pneumology, Allergology and Neonatology at Hannover Medical School (MHH) has now developed a technique for creating such bioreactors.”
SINGLE SOURCE
The claim is supported by one web search result mentioning the development of a technique by a team led by Prof. Dr. Nico Lachmann at MHH, and Wikipedia provides general information about MHH, but no other independent source corroborates the specific development.
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wikipedia NEUTRAL — This is a list of notable people born in, or associated with, the German city of Braunschweig (English: Brunswick).
https://en.wikipedia.org/wiki/List_of_people_from_Braunschwe…
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“Using the new method, iPS cells continue to differentiate in a culture medium and form cell aggregates, known as organoids, within 14 days.”
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“These structures, which resemble hematopoietic bone marrow, subsequently release macrophages on a continuous basis.”
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“We can harvest up to 40 million immune cells per bioreactor every week over a period of 10 weeks," says Professor Lachmann.”
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“Four bioreactors are combined in a single device.”
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“Fawaz Saleh et al, Harnessing intermediate-scale bioreactors for next-generation macrophage production and application, Nature Protocols (2026). DOI: 10.1038/s41596-025-01313-x”
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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.