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Research Article
Luciane R Cavalli
Research Institute Pelé Pequeno Príncipe
Corresponding Author
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This work is licensed under a CC BY 4.0 License. Read Full License
Background: To investigate the global expression profile of miRNAs, their impact on cellular signaling pathways and their association with poor prognostic parameters in African-American (AA) patients with triple negative breast cancer (TNBC).
Methods: Twenty-five samples of AA TNBC patients were profiled for global miRNA expression and stratified considering three clinical-pathological parameters: tumor size, lymph node (LN), and recurrence (REC) status. Differential miRNA expression analysis was performed for each parameter, and their discriminatory power was determined by Receiver Operating Characteristic (ROC) curve analysis. KMplotter was assessed to determine the association of the miRNAs with survival, and functional enrichment analysis to determine the main affected pathways and miRNA/mRNA target interactions.
Results: A panel of eight, 23 and 27 miRNAs were associated with tumor size, LN, and REC status, respectively. Combined ROC analysis of two (miR-2117, and miR-378c), seven (let-7f-5p, miR-1255b-5p, miR-1268b, miR-200c-3p, miR-520d, miR-527, and miR-518a-5p), and three (miR-1200, miR-1249-3p, and miR-1271-3p) miRNAs showed a robust discriminatory power based on tumor size (AUC=0.917), LN (AUC=0.945) and REC (AUC=0.981) status, respectively. Enrichment pathway analysis revealed their involvement in proteoglycans and glycan, and cancer-associated pathways. Eight miRNAs with deregulated expressions in patients with large tumor size, positive LN metastasis and recurrence were significantly associated with lower survival rates.
Conclusions: Altogether, our data indicate that miRNA deregulated expression is a relevant biological factor that can be associated with the poor prognosis in TNBC of AA patients, by conferring to their TNBC cells aggressive phenotypes that are reflected in the clinical characteristics evaluated in this study.
Keywords
microRNA, triple-negative breast cancer, African-American, prognosis, tumor size, lymph node
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No competing interests reported.
This is a list of supplementary files associated with this preprint. Click to download.
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View the published article at BMC Cancer.
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A new preprint design is coming!
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See the published version of this preprint at BMC Cancer.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Luciane R Cavalli
Research Institute Pelé Pequeno Príncipe
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
View the published article at BMC Cancer.
Version 1
Posted 27 Jan, 2021
No community comments so far
Editorial decision: Major revision
On 01 Mar, 2021
Reviews received
Received 23 Feb, 2021
Reviewers agreed
On 25 Jan, 2021
Reviewers invited
Invitations sent on 25 Jan, 2021
Editor assigned
On 25 Jan, 2021
Editor invited
On 25 Jan, 2021
Submission checks complete
On 25 Jan, 2021
First submitted
On 20 Jan, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at BMC Cancer.
Background: To investigate the global expression profile of miRNAs, their impact on cellular signaling pathways and their association with poor prognostic parameters in African-American (AA) patients with triple negative breast cancer (TNBC).
Methods: Twenty-five samples of AA TNBC patients were profiled for global miRNA expression and stratified considering three clinical-pathological parameters: tumor size, lymph node (LN), and recurrence (REC) status. Differential miRNA expression analysis was performed for each parameter, and their discriminatory power was determined by Receiver Operating Characteristic (ROC) curve analysis. KMplotter was assessed to determine the association of the miRNAs with survival, and functional enrichment analysis to determine the main affected pathways and miRNA/mRNA target interactions.
Results: A panel of eight, 23 and 27 miRNAs were associated with tumor size, LN, and REC status, respectively. Combined ROC analysis of two (miR-2117, and miR-378c), seven (let-7f-5p, miR-1255b-5p, miR-1268b, miR-200c-3p, miR-520d, miR-527, and miR-518a-5p), and three (miR-1200, miR-1249-3p, and miR-1271-3p) miRNAs showed a robust discriminatory power based on tumor size (AUC=0.917), LN (AUC=0.945) and REC (AUC=0.981) status, respectively. Enrichment pathway analysis revealed their involvement in proteoglycans and glycan, and cancer-associated pathways. Eight miRNAs with deregulated expressions in patients with large tumor size, positive LN metastasis and recurrence were significantly associated with lower survival rates.
Conclusions: Altogether, our data indicate that miRNA deregulated expression is a relevant biological factor that can be associated with the poor prognosis in TNBC of AA patients, by conferring to their TNBC cells aggressive phenotypes that are reflected in the clinical characteristics evaluated in this study.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
No competing interests reported.
This is a list of supplementary files associated with this preprint. Click to download.
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