完整报告MG-2610-4471完成于 23 Oct 2026, 14:31 UTC

FIS7 loss drives mitochondrial elongation and synaptic decline in aging cortical neurons

L. Okafor, M. Brandt, S. Iyer, J. Whitcombe

领域: Neuroscience · Cell biology
篇幅: 31 页 · 7,840 词
图: 6
参考文献: 42
目标期刊: eLife

分数越高，越可能被要求大修或直接拒稿。

主要: 4
次要: 3
有问题的文献: 4

总结

A clear, well-motivated study whose central claim currently outruns its evidence. Referees are likely to accept the imaging but ask for a rescue experiment, a culture-level reanalysis of the spine data, and either in vivo aging data or a narrower title.

主要问题4

很可能决定是小修还是大修，建议优先处理。

主要Causal claimResults · Fig. 3

The causal claim rests on a single shRNA with no rescue

demonstrating that FIS7 is required for the maintenance of dendritic spines in mature neurons.

审稿人为什么会提: Every loss-of-function result in Fig. 3 uses one shRNA. Reviewers routinely ask whether the phenotype is off-target, and “required” is stronger than knockdown alone can support.
怎么改: Re-express an shRNA-resistant FIS7 and show spine density recovers, or repeat the key panels with a second, independent shRNA or a CRISPR knockout. Until then, soften “required” to “contributes to”.

主要StatisticsMethods · Fig. 2D

Neurons, not animals, are treated as independent replicates

n = 142 neurons from 3 cultures; p < 0.001, two-tailed t-test.

审稿人为什么会提: Neurons from the same culture are not independent. Pooling them inflates n and can turn a culture-level effect into an apparently strong one — a frequent reason for a major-revision request.
怎么改: Report one value per culture (or per animal) and test on those, or fit a mixed-effects model with culture as a random effect. State the biological n in every legend.

主要NoveltyIntroduction · ¶4

The novelty claim overlooks the Drp1 literature

This is the first report linking mitochondrial morphology to synaptic decline.

审稿人为什么会提: Links between fission machinery and synapse loss are well established for Drp1. A reviewer in this field will name those papers and question what is new here.
怎么改: Cite the Drp1 work directly and state the specific advance — an FIS7-dependent, age-restricted mechanism — rather than a first-ever link.

主要Missing experimentResults · Fig. 4–5

Aging is claimed in the title but tested only in culture

Together, these data establish FIS7 as a driver of synaptic decline during aging.

审稿人为什么会提: All aging data come from neurons kept 21 days in vitro. Reviewers will ask for at least one in vivo time point before accepting an aging claim.
怎么改: Add FIS7 levels and spine counts from young and aged mouse cortex, or narrow the title and abstract to in-vitro maturation.

次要问题3

改起来快，编辑初审时会注意到。

次要Key informationFig. 4 legend

Animal age and sex are missing from the Fig. 4 legend

Cortical tissue was collected and processed as described.

审稿人为什么会提: Most life-science journals require age and sex for every animal experiment; editors return manuscripts for this at triage.
怎么改: Add age (in weeks) and sex for each group to the legend and the Methods.

次要FiguresFig. 1B

Scale bars are absent from the confocal panels

Representative images of MitoTracker-labelled neurons.

审稿人为什么会提: Without scale bars, mitochondrial length cannot be judged from the images, which is the central measurement of the figure.
怎么改: Add a scale bar to every micrograph and give its length in the legend.

次要StatisticsFig. 3C

Western blot normalisation is not described

FIS7 protein was reduced by 68% relative to control.

审稿人为什么会提: Reviewers will ask which loading control was used and whether bands were within the linear range.
怎么改: Name the loading control, show full blots in a supplement, and describe the quantification.

参考文献核查

共 42 条文献已在 Crossref 和 Retraction Watch 中核查，有问题的排在前面。

38 条已核实 · 1 条已撤稿 · 2 条 DOI 不匹配 · 1 条未找到

参考文献核查结果
编号	文献	状态	核查结果
[12]	Zhang H.-L. et al. Cell Rep 18, 1102⁠–⁠1115 (2017)doi:10.5555/celrep.2017.1102	已撤稿	Retraction notice issued; check whether the claim it supports still stands.
[19]	Kowalski T. & Reyes A. J Neurosci 40, 512⁠–⁠527 (2020)doi:10.5555/jneuro.2020.0512	DOI 不匹配	DOI points to a different paper by other authors.
[31]	Moreau P. Mitochondrion 58, 44⁠–⁠51 (2021)未提供 DOI	未找到	No record in Crossref under this title, journal or year.
[7]	Adeyemi K. et al. J Cell Sci 132, jcs2281 (2019)doi:10.5555/jcs.2019.2281	已核实	DOI resolves to the cited article.
[23]	Hallström R. et al. Neuron 102, 81⁠–⁠96 (2019)doi:10.5555/neuron.2019.0081	已核实	DOI resolves to the cited article.

示例只列出了 42 条文献中的一部分。

方法说明

审稿遍数: 2 遍，相互独立
原始问题数: 11 → 7
丢弃的引用: 2
模型版本: v0.3

本报告是投稿前的自查工具，不判断科学结论是否正确，也不保证录用。

主要问题4

很可能决定是小修还是大修，建议优先处理。

主要Causal claimResults · Fig. 3

The causal claim rests on a single shRNA with no rescue

demonstrating that FIS7 is required for the maintenance of dendritic spines in mature neurons.

审稿人为什么会提: Every loss-of-function result in Fig. 3 uses one shRNA. Reviewers routinely ask whether the phenotype is off-target, and “required” is stronger than knockdown alone can support.
怎么改: Re-express an shRNA-resistant FIS7 and show spine density recovers, or repeat the key panels with a second, independent shRNA or a CRISPR knockout. Until then, soften “required” to “contributes to”.

主要StatisticsMethods · Fig. 2D

Neurons, not animals, are treated as independent replicates

n = 142 neurons from 3 cultures; p < 0.001, two-tailed t-test.

审稿人为什么会提: Neurons from the same culture are not independent. Pooling them inflates n and can turn a culture-level effect into an apparently strong one — a frequent reason for a major-revision request.
怎么改: Report one value per culture (or per animal) and test on those, or fit a mixed-effects model with culture as a random effect. State the biological n in every legend.

主要NoveltyIntroduction · ¶4

The novelty claim overlooks the Drp1 literature

This is the first report linking mitochondrial morphology to synaptic decline.

审稿人为什么会提: Links between fission machinery and synapse loss are well established for Drp1. A reviewer in this field will name those papers and question what is new here.
怎么改: Cite the Drp1 work directly and state the specific advance — an FIS7-dependent, age-restricted mechanism — rather than a first-ever link.

主要Missing experimentResults · Fig. 4–5

Aging is claimed in the title but tested only in culture

Together, these data establish FIS7 as a driver of synaptic decline during aging.

审稿人为什么会提: All aging data come from neurons kept 21 days in vitro. Reviewers will ask for at least one in vivo time point before accepting an aging claim.
怎么改: Add FIS7 levels and spine counts from young and aged mouse cortex, or narrow the title and abstract to in-vitro maturation.

次要问题3

改起来快，编辑初审时会注意到。

次要Key informationFig. 4 legend

Animal age and sex are missing from the Fig. 4 legend

Cortical tissue was collected and processed as described.

审稿人为什么会提: Most life-science journals require age and sex for every animal experiment; editors return manuscripts for this at triage.
怎么改: Add age (in weeks) and sex for each group to the legend and the Methods.

次要FiguresFig. 1B

Scale bars are absent from the confocal panels

Representative images of MitoTracker-labelled neurons.

审稿人为什么会提: Without scale bars, mitochondrial length cannot be judged from the images, which is the central measurement of the figure.
怎么改: Add a scale bar to every micrograph and give its length in the legend.

次要StatisticsFig. 3C

Western blot normalisation is not described

FIS7 protein was reduced by 68% relative to control.

审稿人为什么会提: Reviewers will ask which loading control was used and whether bands were within the linear range.
怎么改: Name the loading control, show full blots in a supplement, and describe the quantification.

[12]

Zhang H.-L. et al. Cell Rep 18, 1102⁠–⁠1115 (2017)doi:10.5555/celrep.2017.1102

已撤稿

Retraction notice issued; check whether the claim it supports still stands.

[19]

Kowalski T. & Reyes A. J Neurosci 40, 512⁠–⁠527 (2020)doi:10.5555/jneuro.2020.0512

DOI 不匹配

DOI points to a different paper by other authors.

[31]

Moreau P. Mitochondrion 58, 44⁠–⁠51 (2021)未提供 DOI

未找到

No record in Crossref under this title, journal or year.

[7]

Adeyemi K. et al. J Cell Sci 132, jcs2281 (2019)doi:10.5555/jcs.2019.2281

已核实

DOI resolves to the cited article.

[23]

Hallström R. et al. Neuron 102, 81⁠–⁠96 (2019)doi:10.5555/neuron.2019.0081

已核实

DOI resolves to the cited article.