Cell Metabolism Formatting Requirements: Complete Author Guide

Cell Metabolism uses a hybrid abstract format that's structured but doesn't use explicit subheadings in the final publication.

• Word limit: 150 words maximum
• Structure: No formal subheadings, but the abstract should follow the logical flow: context, approach, key results, significance
• Citations: Not permitted
• Highlights: In addition to the abstract, you must provide 3-4 bullet-point "Highlights" (each under 85 characters) that capture the main findings. These appear prominently on the article page and in search results.

The Highlights are often underestimated. They're one of the first things readers see, and they're used for social media promotion by the journal. Write them as complete, specific claims: "High-fat diet rewires hepatic lipid metabolism through AMPK-independent pathway" is better than "We studied the effects of diet on liver metabolism."

Your abstract should include at least one specific quantitative result. Cell Metabolism reviewers are data-driven, and an abstract that reads as purely qualitative will raise flags about the strength of the underlying evidence.

An "In Brief" summary (about 40 words, written in third person) is also required. This is a single-sentence teaser that appears in the table of contents: "Smith et al. show that lactate-derived acetyl-CoA drives epigenetic reprogramming in tumor-associated macrophages, revealing a metabolic checkpoint that controls anti-tumor immunity."

Cell Metabolism doesn't impose a rigid maximum figure count, but the convention is 6-7 main figures for an Article.

Figure specifications:

Graphical abstract: This is required for Articles, Short Articles, and Resources. The specifications are strict:

• Dimensions: 1,200 x 1,200 pixels (square format, non-negotiable)
• Format: JPEG, TIFF, or PDF
• No text smaller than 18 pt
• Use the Cell Press graphical abstract color palette (available on the Cell Press website)
• Must be understandable without reading the paper
• No multi-panel layouts; use a single, cohesive visual

The graphical abstract is arguably more important at Cell Metabolism than at other Cell Press journals because metabolism lends itself to pathway diagrams that can communicate complex results visually. A well-designed graphical abstract will be shared widely. A generic one with arrows and boxes won't.

Supplemental figures: There's no formal limit, but restraint is appreciated. Reviewers have to examine all supplemental data, and burying 20 supplemental figures in a 7-figure paper creates frustration. As a guideline, aim for a ratio of no more than 2 supplemental figures per main figure.

Cell Metabolism uses the Cell Press citation style.

In-text citations: Superscript numbers, assigned in order of first appearance. Multiple references are separated by commas (^1,2,3), and ranges use a hyphen (^4-8).

Reference list format:

1. Smith, A.B., Johnson, C.D., Williams, E.F., and Lee, G.H. (2025). Title of article in sentence case. Cell Metab. 37, 123-135.

Key formatting details:

• Author names: Last name, comma, initials with periods
• List all authors (Cell Press doesn't use "et al." in the reference list regardless of author count)
• "and" before the last author (not "&")
• Year in parentheses after the author list
• Journal names abbreviated per MEDLINE
• Volume in bold, followed by comma and page range
• Period at the end

Cell Metabolism doesn't impose a hard reference cap for Articles, but 60-80 references is typical. Going above 80 for a primary research article would be unusual and might prompt an editor to suggest trimming.

One Cell Press quirk: preprints can be cited but must be clearly labeled as such in the reference list, including the preprint server name and DOI. Cell Press was an early adopter of preprint citation policies and treats them as legitimate references.

Cell Metabolism uses a "Supplemental Information" system that includes several distinct components.

Supplemental Figures and Tables: Additional display items that support the main figures. These are peer-reviewed and published alongside the article. Each supplemental figure needs a title, legend, and clear reference in the main text. Label them "Figure S1, Figure S2" etc.

STAR Methods (mandatory): The STAR Methods section is itself supplemental in the sense that it appears after the main text and references. It includes the Key Resources Table and detailed experimental procedures. More on this below.

Data and Code Availability: Cell Press requires a Data and Code Availability statement at the end of the STAR Methods. All datasets must be deposited in public repositories with accession numbers. For metabolomics data, MetaboLights or the Metabolomics Workbench are standard. For genomics data, GEO or ArrayExpress.

Supplemental Videos: Accepted in MP4 format. Common for live-cell imaging of metabolic reporters or in vivo metabolic tracing experiments.

Source Data: Cell Press encourages (and reviewers increasingly expect) sharing of source data underlying all figures, typically as Excel files or CSV deposits.

STAR Methods (Structured, Transparent, Accessible Reporting) is Cell Press's proprietary methods framework. It's not optional. Every Article and Short Article must use it.

Required STAR Methods subsections:

1. Resource Availability

• Lead contact (name and email)
• Materials availability statement
• Data and code availability statement

1. Experimental Model and Study Participant Details

• Cell lines (source, authentication, mycoplasma testing)
• Animal models (strain, sex, age, housing conditions)
• Human subjects (IRB approval, consent, demographics)

1. Method Details

• All experimental procedures in sufficient detail for reproduction

1. Quantification and Statistical Analysis

• Statistical tests, software, significance thresholds, sample sizes, exclusion criteria

Key Resources Table: This is a structured table at the top of the STAR Methods listing every reagent, antibody, chemical, software tool, dataset, and biological sample used. It's formatted with columns for Reagent or Resource, Source, and Identifier (e.g., catalog number, RRID).

The Key Resources Table is mandatory and reviewed carefully. Missing entries will generate revision requests. For metabolism papers, this table typically includes metabolite standards, isotope tracers, enzyme assay kits, and metabolomics software.

Cell Metabolism's manuscript should begin with standard identifying information. Cell Press doesn't use the term "cover page" explicitly, but the first page of your manuscript must include:

• Full title
• Author names with superscript affiliation numbers
• Affiliations with full institutional addresses
• Lead contact author with email address
• Author contributions statement (using CRediT taxonomy)
• Declaration of interests
• Keywords (up to 10)

Author contributions: Cell Press uses the CRediT (Contributor Roles Taxonomy) system. Each author's specific contributions must be listed using standard CRediT categories: Conceptualization, Methodology, Investigation, Writing (Original Draft), Writing (Review and Editing), Supervision, Funding Acquisition, etc.

Declaration of interests: All authors must declare competing interests or state "The authors declare no competing interests." This must be in the manuscript, not just in the submission system.

Cell Metabolism has formatting and editorial expectations that go beyond generic Cell Press guidelines.

1. Metabolic flux data must include specific controls. If your paper includes isotope tracing experiments (13C-glucose, 13C-glutamine, etc.), reviewers expect to see natural abundance corrections, fractional enrichment data, and ideally, metabolic flux analysis (MFA) modeling. Simply showing mass isotopomer distributions without flux calculations is increasingly seen as incomplete.

2. The graphical abstract drives editorial interest. Cell Metabolism editors use the graphical abstract during initial triage. A clear, visually compelling graphical abstract that tells the story at a glance can influence whether your paper gets sent for review. Don't treat it as a formality.

3. Sex as a biological variable. For any study using animal models, Cell Metabolism requires reporting the sex of animals used and justification if only one sex was studied. This has been enforced since 2022, and papers that don't address it will be returned.

4. Statistical rigor expectations are above average. Cell Metabolism reviewers routinely request additional statistical tests, effect sizes (not just P-values), and sample size justifications. The Quantification and Statistical Analysis section of STAR Methods is scrutinized heavily. Include exact P-values, confidence intervals, and the specific test used for each comparison.

5. Extended metabolomics datasets need proper formatting. If you're presenting metabolomics data, the journal expects heatmaps or volcano plots in the main figures, with full metabolite lists (including fold changes, P-values, and FDR corrections) in supplemental tables. Raw data must be deposited in MetaboLights or equivalent.

6. The "In Brief" and "Highlights" are reviewed. Unlike some journals where these summary elements are perfunctory, Cell Metabolism editors actively edit the In Brief and Highlights for clarity and accuracy. Submit polished versions; don't expect the editors to rewrite them for you.

Cell Metabolism's formatting requirements are layered: Cell Press standards, STAR Methods structure, the Key Resources Table, the graphical abstract specifications, and journal-specific expectations around metabolic data. Missing a single element, like a Key Resources Table entry for an antibody, can trigger a revision request that adds weeks to your timeline.

Cell Metabolism submission readiness check scans your manuscript against Cell Metabolism's specific requirements, checking everything from STAR Methods structure to reference formatting. It's particularly useful for catching missing Key Resources Table entries and ensuring your statistical reporting meets the journal's standards.

For related Cell Press journals, see our formatting guides for Molecular Cell and Immunity. You can also browse our full collection of journal submission guides for additional resources.

In our pre-submission review work with manuscripts targeting Cell Metabolism, four patterns generate the most consistent desk-rejection outcomes.

STAR Methods section absent or Key Resources Table missing. Cell Metabolism, as a Cell Press journal, requires a structured STAR Methods section with a Key Resources Table for all primary research articles. The Key Resources Table lists all antibodies, chemicals, commercial assays, critical reagents, software, and biological materials with catalog numbers and RRID identifiers. Manuscripts submitted without a STAR Methods section, or with a conventional unstructured Methods section, are returned before editorial assessment. This is enforced at the submission stage.

Graphical abstract not provided or describes experimental pipeline rather than biological conclusion. Cell Metabolism requires a graphical abstract for all research articles. The graphical abstract must be a purpose-built visual that communicates the main biological finding, not the experimental workflow or the biological system studied. The Cell Press guidelines specify that the graphical abstract should convey "what the study found." Submissions where the graphical abstract is a cartoon of the metabolic pathway under study, without indicating the direction of the finding, are asked to revise.

Scope evaluation fails the metabolic-mechanism test. Cell Metabolism publishes work at the interface of metabolism with physiological and pathological processes. Editors evaluate whether the submission makes a mechanistic contribution to understanding how metabolic regulation is altered in disease or how metabolic signals integrate with cellular physiology. Papers that describe a metabolic phenotype without a mechanistic link to the metabolic pathway driving it, or that report a disease association without connecting it to metabolic mechanism, are deprioritized at desk review.

Validation of in vitro findings lacking in vivo confirmation. Cell Metabolism reviewers evaluate whether the primary mechanistic claims are supported by in vivo evidence, not only cell culture data. Manuscripts where a metabolic enzyme or pathway is identified as a regulator in cell lines, without corroboration from a mouse model or patient samples, are routinely asked to provide additional evidence before acceptance. This expectation is not absolute, but editors flag manuscripts that rely exclusively on in vitro findings for conclusions claimed to be physiologically relevant.

A Cell Metabolism formatting and readiness check evaluates manuscript structure, STAR Methods compliance, and mechanistic scope against these desk-rejection patterns before you submit.