Bile acid distributions, sex-specificity, and prognosis in colorectal cancer

Yuping Cai, Xinyi Shen, Lingeng Lu, Hong Yan, Huang Huang, Patricia Gaule, Engjel Muca, Casey M. Theriot, Zahra Rattray, Nicholas J. W. Rattray, Jun Lu, Nita Ahuja, Yawei Zhang, Philip B. Paty, Sajid A. Khan, Caroline H. Johnson

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
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Abstract

Background
Bile acids are known to be genotoxic and contribute to colorectal cancer (CRC). However, the link between CRC tumor bile acids to tumor location, patient sex, microbiome, immune-regulatory cells, and prognosis is not clear.

Methods
We conducted bile acid analysis using targeted liquid chromatography–mass spectrometry (LC–MS) on tumor tissues from CRC patients (n = 228) with survival analysis. We performed quantitative immunofluorescence (QIF) on tumors to examine immune cells.

Results
Twelve of the bile acids were significantly higher in right-sided colon tumors compared to left-sided colon tumors. Furthermore, in male patients, right-sided colon tumors had elevated secondary bile acids (deoxycholic acid, lithocholic acid, ursodeoxycholic acid) compared to left-sided colon tumors, but this difference between tumors by location was not observed in females. A high ratio of glycoursodeoxycholic to ursodeoxycholic was associated with 5-year overall survival (HR = 3.76, 95% CI = 1.17 to 12.1, P = 0.026), and a high ratio of glycochenodeoxycholic acid to chenodeoxycholic acid was associated with 5-year recurrence-free survival (HR = 3.61, 95% CI = 1.10 to 11.84, P = 0.034). We also show correlation between these bile acids and FoxP3 + T regulatory cells.

Conclusions
This study revealed that the distribution of bile acid abundances in colon cancer patients is tumor location-, age- and sex-specific, and are linked to patient prognosis. This study provides new implications for targeting bile acid metabolism, microbiome, and immune responses for colon cancer patients by taking into account primary tumor location and sex.
Original languageEnglish
Article number61
Number of pages13
JournalBiology of Sex Differences
Volume13
Issue number1
DOIs
Publication statusPublished - 23 Oct 2022

Keywords

  • cancer
  • measurement
  • colon cancer
  • biomarkers
  • prognosis

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