Evidence map›Paper›PMID 32892745›Full record

ArticleMilitary Medical Research2020

Efficient and rapid conversion of human astrocytes and ALS mouse model spinal cord astrocytes into motor neuron-like cells by defined small molecules.

An-Dong Zhao, Hua Qin, Meng-Li Sun, Kui Ma, Xiao-Bing Fu

Erratum issuedOpen access · diamondAbstract read
In one paragraph

Article in Military Medical Research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 16% of its field
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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

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  19. Frontiers in aging neuroscience · 2021
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

An-Dong ZhaoTianjin Medical University, Tianjin, 300070, China.
Hua QinResearch Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Division and 4th Medical Center, PLA General Hospital and PLA Medical College, 28 Fu Xing Road, Haidian District, Beijing, 100853, P. R. China.
Meng-Li SunResearch Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Division and 4th Medical Center, PLA General Hospital and PLA Medical College, 28 Fu Xing Road, Haidian District, Beijing, 100853, P. R. China.
Kui MaResearch Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Division and 4th Medical Center, PLA General Hospital and PLA Medical College, 28 Fu Xing Road, Haidian District, Beijing, 100853, P. R. China.
Xiao-Bing FuResearch Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Division and 4th Medical Center, PLA General Hospital and PLA Medical College, 28 Fu Xing Road, Haidian District, Beijing, 100853, P. R. China. fuxiaobing@vip.sina.com.ORCID http://orcid.org/0000-0002-2465-1700
Chinese PLA General Hospital · CNChinese Academy of Medical Sciences & Peking Union Medical College · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMotor neuron degeneration or loss in the spinal cord is the characteristic phenotype of motor neuron diseases or spinal cord injuries. Being proliferative and located near neurons, astrocytes are considered ideal cell sources for regenerating neurons.

methodsWe selected and tested different combinations of the small molecules for inducing the conversion of human and mouse astrocytes into neurons. Microscopic imaging and immunocytochemistry analyses were used to characterize the morphology and phenotype of the induced neurons while RT-qPCR was utilized to analyze changes in gene expression. In addition, whole-cell patch-clamp recordings were measured to examine the electrophysiological properties of induced neurons.

resultsThe results showed that human astrocytes could be rapidly and efficiently converted into motor neuron-like cells by treatment with defined small molecules, with a yield of over 85% motor neuron-like cells attained. The induced motor neuron-like cells expressed the pan-neuronal markers TUJ1, MAP2, NeuN, and Synapsin 1 and motor neuron markers HB9, ISL1, CHAT, and VAChT. During the conversion process, the cells did not pass through a proliferative neural progenitor cell intermediate. The induced motor neurons were functional, showing the electrophysiological properties of neurons. The same chemical cocktail could induce spinal cord astrocytes from an amyotrophic lateral sclerosis mouse model carrying a SOD1 mutation to become motor neuron-like cells that exhibited a decrease in cell survival and an increase in oxidative stress compared to that observed in wild-type MNs derived from healthy mice. Moreover, the chemical induction reduced oxidative stress in the mutant astrocytes.

conclusionThe results of the present study demonstrated the feasibility of chemically converting human and mouse astrocytes into motor neuron-like cells that are useful for neurodegenerative disease modeling and regenerative medicine.

Indexed as

Amyotrophic Lateral SclerosisAnimalsAstrocytesCell DifferentiationCells, CulturedDisease Models, AnimalHumansMiceMotor NeuronsSpinal CordAmyotrophic lateral sclerosisConversionHuman astrocyteMotor neuronNeurodegenerativeRegenerationReprogrammingTransdifferentiation

Identifiers

PMID32892745
PMCPMC7487818
OpenAlexW3083414934

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.