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Güven Gülhan Ü, Nikerel E, Çakır T, Erdoğan Sevilgen F, Durmuş S. Species-level identification of enterotype-specific microbial markers for colorectal cancer and adenoma. Mol Omics 2024; 20:397-416. [PMID: 38780313 DOI: 10.1039/d4mo00016a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Enterotypes have been shown to be an important factor for population stratification based on gut microbiota composition, leading to a better understanding of human health and disease states. Classifications based on compositional patterns will have implications for personalized microbiota-based solutions. There have been limited enterotype based studies on colorectal adenoma and cancer. Here, an enterotype-based meta-analysis of fecal shotgun metagenomic studies was performed, including 1579 samples of healthy controls (CTR), colorectal adenoma (ADN) and colorectal cancer (CRC) in total. Gut microbiota of healthy people were clustered into three enterotypes (Ruminococcus-, Bacteroides- and Prevotella-dominated enterotypes). Reference-based enterotype assignments were performed for CRC and ADN samples, using the supervised machine learning algorithm, K-nearest neighbors. Differential abundance analyses and random forest classification were conducted on each enterotype between healthy controls and CRC-ADN groups, revealing novel enterotype-specific microbial markers for non-invasive CRC screening strategies. Furthermore, we identified microbial species unique to each enterotype that play a role in the production of secondary bile acids and short-chain fatty acids, unveiling the correlation between cancer-associated gut microbes and dietary patterns. The enterotype-based approach in this study is promising in elucidating the mechanisms of differential gut microbiome profiles, thereby improving the efficacy of personalized microbiota-based solutions.
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Affiliation(s)
- Ünzile Güven Gülhan
- Department of Bioengineering, Gebze Technical University, Gebze, TR 41400, Turkey.
| | - Emrah Nikerel
- Department of Genetics and Bioengineering, Yeditepe University, Istanbul, TR 34755, Turkey
| | - Tunahan Çakır
- Department of Bioengineering, Gebze Technical University, Gebze, TR 41400, Turkey.
- PhiTech Bioinformatics, Gebze, TR 41470, Turkey
| | - Fatih Erdoğan Sevilgen
- The Institute for Data Science & Artificial Intelligence, Boğaziçi University, Istanbul, TR 34342, Turkey
- PhiTech Bioinformatics, Gebze, TR 41470, Turkey
| | - Saliha Durmuş
- Department of Bioengineering, Gebze Technical University, Gebze, TR 41400, Turkey.
- PhiTech Bioinformatics, Gebze, TR 41470, Turkey
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2
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Conde‐Pérez K, Buetas E, Aja‐Macaya P, Martin‐De Arribas E, Iglesias‐Corrás I, Trigo‐Tasende N, Nasser‐Ali M, Estévez LS, Rumbo‐Feal S, Otero‐Alén B, Noguera JF, Concha Á, Pardiñas‐López S, Carda‐Diéguez M, Gómez‐Randulfe I, Martínez‐Lago N, Ladra S, Aparicio LA, Bou G, Mira A, Vallejo JA, Poza M. Parvimonas micra can translocate from the subgingival sulcus of the human oral cavity to colorectal adenocarcinoma. Mol Oncol 2024; 18:1143-1173. [PMID: 37558206 PMCID: PMC11076991 DOI: 10.1002/1878-0261.13506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 06/01/2023] [Accepted: 08/08/2023] [Indexed: 08/11/2023] Open
Abstract
Oral and intestinal samples from a cohort of 93 colorectal cancer (CRC) patients and 30 healthy controls (non-CRC) were collected for microbiome analysis. Saliva (28 non-CRC and 94 CRC), feces (30 non-CRC and 97 CRC), subgingival fluid (20 CRC), and tumor tissue samples (20 CRC) were used for 16S metabarcoding and/or RNA sequencing (RNAseq) approaches. A differential analysis of the abundance, performed with the ANCOM-BC package, adjusting the P-values by the Holm-Bonferroni method, revealed that Parvimonas was significantly over-represented in feces from CRC patients (P-value < 0.001) compared to healthy controls. A total of 11 Parvimonas micra isolates were obtained from the oral cavity and adenocarcinoma of CRC patients. Genome analysis identified a pair of isolates from the same patient that shared 99.2% identity, demonstrating that P. micra can translocate from the subgingival cavity to the gut. The data suggest that P. micra could migrate in a synergistic consortium with other periodontal bacteria. Metatranscriptomics confirmed that oral bacteria were more active in tumor than in non-neoplastic tissues. We suggest that P. micra could be considered as a CRC biomarker detected in non-invasive samples such as feces.
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Affiliation(s)
- Kelly Conde‐Pérez
- meiGAbiome, Microbiology Research Group, Servicio de MicrobiologíaCenter for Advanced Scientific Research (CICA), Institute of Biomedical Research (INIBIC), University Hospital of A Coruña (HUAC), University of A Coruña (UDC), CIBER of Infectious Diseases (CIBERINFEC‐ISCIII), Hospital UniversitarioSpain
| | - Elena Buetas
- Genomic and Health DepartmentFISABIO Foundation, Center for Advanced Research in Public HealthValenciaSpain
| | - Pablo Aja‐Macaya
- meiGAbiome, Microbiology Research Group, Servicio de MicrobiologíaCenter for Advanced Scientific Research (CICA), Institute of Biomedical Research (INIBIC), University Hospital of A Coruña (HUAC), University of A Coruña (UDC), CIBER of Infectious Diseases (CIBERINFEC‐ISCIII), Hospital UniversitarioSpain
| | - Elsa Martin‐De Arribas
- Database LaboratoryResearch Center for Information and Communication Technologies (CITIC), University of A Coruña (UDC), Campus de ElviñaSpain
| | - Iago Iglesias‐Corrás
- Database LaboratoryResearch Center for Information and Communication Technologies (CITIC), University of A Coruña (UDC), Campus de ElviñaSpain
| | - Noelia Trigo‐Tasende
- meiGAbiome, Microbiology Research Group, Servicio de MicrobiologíaCenter for Advanced Scientific Research (CICA), Institute of Biomedical Research (INIBIC), University Hospital of A Coruña (HUAC), University of A Coruña (UDC), CIBER of Infectious Diseases (CIBERINFEC‐ISCIII), Hospital UniversitarioSpain
| | - Mohammed Nasser‐Ali
- meiGAbiome, Microbiology Research Group, Servicio de MicrobiologíaCenter for Advanced Scientific Research (CICA), Institute of Biomedical Research (INIBIC), University Hospital of A Coruña (HUAC), University of A Coruña (UDC), CIBER of Infectious Diseases (CIBERINFEC‐ISCIII), Hospital UniversitarioSpain
| | - Lara S. Estévez
- Pathological Anatomy Service and BiobankUniversity Hospital of A Coruña (HUAC), Institute of Biomedical Research (INIBIC), Hospital UniversitarioSpain
| | - Soraya Rumbo‐Feal
- meiGAbiome, Microbiology Research Group, Servicio de MicrobiologíaCenter for Advanced Scientific Research (CICA), Institute of Biomedical Research (INIBIC), University Hospital of A Coruña (HUAC), University of A Coruña (UDC), CIBER of Infectious Diseases (CIBERINFEC‐ISCIII), Hospital UniversitarioSpain
| | - Begoña Otero‐Alén
- Pathological Anatomy Service and BiobankUniversity Hospital of A Coruña (HUAC), Institute of Biomedical Research (INIBIC), Hospital UniversitarioSpain
| | - Jose F. Noguera
- General and Digestive Surgery ServiceUniversity Hospital of A Coruña (HUAC), Hospital UniversitarioSpain
| | - Ángel Concha
- Pathological Anatomy Service and BiobankUniversity Hospital of A Coruña (HUAC), Institute of Biomedical Research (INIBIC), Hospital UniversitarioSpain
| | - Simón Pardiñas‐López
- Periodontology and Oral SurgeryPardiñas Medical Dental Clinic, Cell Therapy and Regenerative Medicine Group, Institute of Biomedical Research (INIBIC)A CoruñaSpain
| | - Miguel Carda‐Diéguez
- Genomic and Health DepartmentFISABIO Foundation, Center for Advanced Research in Public HealthValenciaSpain
| | - Igor Gómez‐Randulfe
- Medical Oncology DepartmentUniversity Hospital of A Coruña (HUAC), Maternal and Child HospitalSpain
| | - Nieves Martínez‐Lago
- Medical Oncology DepartmentUniversity Hospital of A Coruña (HUAC), Maternal and Child HospitalSpain
| | - Susana Ladra
- Database LaboratoryResearch Center for Information and Communication Technologies (CITIC), University of A Coruña (UDC), Campus de ElviñaSpain
| | - Luis A. Aparicio
- Medical Oncology DepartmentUniversity Hospital of A Coruña (HUAC), Maternal and Child HospitalSpain
| | - Germán Bou
- meiGAbiome, Microbiology Research Group, Servicio de MicrobiologíaCenter for Advanced Scientific Research (CICA), Institute of Biomedical Research (INIBIC), University Hospital of A Coruña (HUAC), University of A Coruña (UDC), CIBER of Infectious Diseases (CIBERINFEC‐ISCIII), Hospital UniversitarioSpain
| | - Alex Mira
- Genomic and Health DepartmentFISABIO Foundation, Center for Advanced Research in Public HealthValenciaSpain
| | - Juan A. Vallejo
- meiGAbiome, Microbiology Research Group, Servicio de MicrobiologíaCenter for Advanced Scientific Research (CICA), Institute of Biomedical Research (INIBIC), University Hospital of A Coruña (HUAC), University of A Coruña (UDC), CIBER of Infectious Diseases (CIBERINFEC‐ISCIII), Hospital UniversitarioSpain
| | - Margarita Poza
- meiGAbiome, Microbiology Research Group, Servicio de MicrobiologíaCenter for Advanced Scientific Research (CICA), Institute of Biomedical Research (INIBIC), University Hospital of A Coruña (HUAC), University of A Coruña (UDC), CIBER of Infectious Diseases (CIBERINFEC‐ISCIII), Hospital UniversitarioSpain
- Microbiome and Health Group, Faculty of SciencesUniversity of A Coruña (UDC), Campus da ZapateiraSpain
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3
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Conde‐Pérez K, Aja‐Macaya P, Buetas E, Trigo‐Tasende N, Nasser‐Ali M, Rumbo‐Feal S, Nión P, Arribas EM, Estévez LS, Otero‐Alén B, Noguera JF, Concha Á, Pardiñas‐López S, Carda‐Diéguez M, Gómez‐Randulfe I, Martínez‐Lago N, Ladra S, Aparicio LMA, Bou G, Mira Á, Vallejo JA, Poza M. The multispecies microbial cluster of Fusobacterium, Parvimonas, Bacteroides and Faecalibacterium as a precision biomarker for colorectal cancer diagnosis. Mol Oncol 2024; 18:1093-1122. [PMID: 38366793 PMCID: PMC11076999 DOI: 10.1002/1878-0261.13604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 12/27/2023] [Accepted: 01/26/2024] [Indexed: 02/18/2024] Open
Abstract
The incidence of colorectal cancer (CRC) has increased worldwide, and early diagnosis is crucial to reduce mortality rates. Therefore, new noninvasive biomarkers for CRC are required. Recent studies have revealed an imbalance in the oral and gut microbiomes of patients with CRC, as well as impaired gut vascular barrier function. In the present study, the microbiomes of saliva, crevicular fluid, feces, and non-neoplastic and tumor intestinal tissue samples of 93 CRC patients and 30 healthy individuals without digestive disorders (non-CRC) were analyzed by 16S rRNA metabarcoding procedures. The data revealed that Parvimonas, Fusobacterium, and Bacteroides fragilis were significantly over-represented in stool samples of CRC patients, whereas Faecalibacterium and Blautia were significantly over-abundant in the non-CRC group. Moreover, the tumor samples were enriched in well-known periodontal anaerobes, including Fusobacterium, Parvimonas, Peptostreptococcus, Porphyromonas, and Prevotella. Co-occurrence patterns of these oral microorganisms were observed in the subgingival pocket and in the tumor tissues of CRC patients, where they also correlated with other gut microbes, such as Hungatella. This study provides new evidence that oral pathobionts, normally located in subgingival pockets, can migrate to the colon and probably aggregate with aerobic bacteria, forming synergistic consortia. Furthermore, we suggest that the group composed of Fusobacterium, Parvimonas, Bacteroides, and Faecalibacterium could be used to design an excellent noninvasive fecal test for the early diagnosis of CRC. The combination of these four genera would significantly improve the reliability of a discriminatory test with respect to others that use a single species as a unique CRC biomarker.
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Affiliation(s)
- Kelly Conde‐Pérez
- Microbiome and Health Group (meiGAbiome), Microbiology Research Group, Institute of Biomedical Research (INIBIC) – Interdisciplinary Center for Chemistry and Biology (CICA) – University of A Coruña (UDC) – CIBER de Enfermedades Infecciosas (CIBERINFEC‐ISCIII), Servicio de MicrobiologíaUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Pablo Aja‐Macaya
- Microbiome and Health Group (meiGAbiome), Microbiology Research Group, Institute of Biomedical Research (INIBIC) – Interdisciplinary Center for Chemistry and Biology (CICA) – University of A Coruña (UDC) – CIBER de Enfermedades Infecciosas (CIBERINFEC‐ISCIII), Servicio de MicrobiologíaUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Elena Buetas
- Genomic and Health Department, FISABIO FoundationCenter for Advanced Research in Public HealthValenciaSpain
| | - Noelia Trigo‐Tasende
- Microbiome and Health Group (meiGAbiome), Microbiology Research Group, Institute of Biomedical Research (INIBIC) – Interdisciplinary Center for Chemistry and Biology (CICA) – University of A Coruña (UDC) – CIBER de Enfermedades Infecciosas (CIBERINFEC‐ISCIII), Servicio de MicrobiologíaUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Mohammed Nasser‐Ali
- Microbiome and Health Group (meiGAbiome), Microbiology Research Group, Institute of Biomedical Research (INIBIC) – Interdisciplinary Center for Chemistry and Biology (CICA) – University of A Coruña (UDC) – CIBER de Enfermedades Infecciosas (CIBERINFEC‐ISCIII), Servicio de MicrobiologíaUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Soraya Rumbo‐Feal
- Microbiome and Health Group (meiGAbiome), Microbiology Research Group, Institute of Biomedical Research (INIBIC) – Interdisciplinary Center for Chemistry and Biology (CICA) – University of A Coruña (UDC) – CIBER de Enfermedades Infecciosas (CIBERINFEC‐ISCIII), Servicio de MicrobiologíaUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Paula Nión
- Microbiome and Health Group (meiGAbiome), Microbiology Research Group, Institute of Biomedical Research (INIBIC) – Interdisciplinary Center for Chemistry and Biology (CICA) – University of A Coruña (UDC) – CIBER de Enfermedades Infecciosas (CIBERINFEC‐ISCIII), Servicio de MicrobiologíaUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Elsa Martín‐De Arribas
- Database Laboratory, Research Center for Information and Communication Technologies (CITIC)University of A Coruña (UDC)A CoruñaSpain
| | - Lara S. Estévez
- Pathology Service and BiobankUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Begoña Otero‐Alén
- Pathology Service and BiobankUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - José F. Noguera
- Surgery ServiceUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Ángel Concha
- Pathology Service and BiobankUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Simón Pardiñas‐López
- Periodontology and Oral Surgery, Pardiñas Medical Dental Clinic – Cell Therapy and Regenerative Medicine GroupInstitute of Biomedical Research (INIBIC)A CoruñaSpain
| | - Miguel Carda‐Diéguez
- Genomic and Health Department, FISABIO FoundationCenter for Advanced Research in Public HealthValenciaSpain
| | - Igor Gómez‐Randulfe
- Medical Oncology DepartmentUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | | | - Susana Ladra
- Database Laboratory, Research Center for Information and Communication Technologies (CITIC)University of A Coruña (UDC)A CoruñaSpain
| | - Luis M. A. Aparicio
- Medical Oncology DepartmentUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Germán Bou
- Microbiome and Health Group (meiGAbiome), Microbiology Research Group, Institute of Biomedical Research (INIBIC) – Interdisciplinary Center for Chemistry and Biology (CICA) – University of A Coruña (UDC) – CIBER de Enfermedades Infecciosas (CIBERINFEC‐ISCIII), Servicio de MicrobiologíaUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Álex Mira
- Genomic and Health Department, FISABIO FoundationCenter for Advanced Research in Public HealthValenciaSpain
| | - Juan A. Vallejo
- Microbiome and Health Group (meiGAbiome), Microbiology Research Group, Institute of Biomedical Research (INIBIC) – Interdisciplinary Center for Chemistry and Biology (CICA) – University of A Coruña (UDC) – CIBER de Enfermedades Infecciosas (CIBERINFEC‐ISCIII), Servicio de MicrobiologíaUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
| | - Margarita Poza
- Microbiome and Health Group (meiGAbiome), Microbiology Research Group, Institute of Biomedical Research (INIBIC) – Interdisciplinary Center for Chemistry and Biology (CICA) – University of A Coruña (UDC) – CIBER de Enfermedades Infecciosas (CIBERINFEC‐ISCIII), Servicio de MicrobiologíaUniversity Hospital of A Coruña (CHUAC)A CoruñaSpain
- Microbiome and Health Group, Faculty of SciencesUniversity of A Coruña (UDC)A CoruñaSpain
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Lin D, Fu Z, Liu J, Perrone-Bizzozero N, Hutchison KE, Bustillo J, Du Y, Pearlson G, Calhoun VD. Association between the oral microbiome and brain resting state connectivity in schizophrenia. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.22.573165. [PMID: 38234846 PMCID: PMC10793457 DOI: 10.1101/2023.12.22.573165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Recent microbiome-brain axis findings have shown evidence of the modulation of microbiome community as an environmental mediator in brain function and psychiatric illness. This work is focused on the role of the microbiome in understanding a rarely investigated environmental involvement in schizophrenia (SZ), especially in relation to brain circuit dysfunction. We leveraged high throughput microbial 16s rRNA sequencing and functional neuroimaging techniques to enable the delineation of microbiome-brain network links in SZ. N=213 SZ and healthy control (HC) subjects were assessed for the oral microbiome. Among them, 139 subjects were scanned by resting-state functional magnetic resonance imaging (rsfMRI) to derive brain functional connectivity. We found a significant microbiome compositional shift in SZ beta diversity (weighted UniFrac distance, p= 6×10 -3 ; Bray-Curtis distance p = 0.021). Fourteen microbial species involving pro-inflammatory and neurotransmitter signaling and H 2 S production, showed significant abundance alterations in SZ. Multivariate analysis revealed one pair of microbial and functional connectivity components showing a significant correlation of 0.46. Thirty five percent of microbial species and 87.8% of brain functional network connectivity from each component also showed significant differences between SZ and HC with strong performance in classifying SZ from HC, with an area under curve (AUC) = 0.84 and 0.87, respectively. The results suggest a potential link between oral microbiome dysbiosis and brain functional connectivity alteration in relation to SZ, possibly through immunological and neurotransmitter signaling pathways and the hypothalamic-pituitary-adrenal axis, supporting for future work in characterizing the role of oral microbiome in mediating effects on SZ brain functional activity.
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Duan Y, Feng W, Shen Y, Li Y, Li N, Chen X, Wang Y. Severe pneumonia with empyema caused by Parvimonas micra and Streptococcus constellatus co-infection: a case report. J Int Med Res 2023; 51:3000605231210657. [PMID: 37994021 PMCID: PMC10666820 DOI: 10.1177/03000605231210657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 10/12/2023] [Indexed: 11/24/2023] Open
Abstract
Empyema is a common complication of pneumonia, caused by the accumulation of purulent exudate due to pathogenic bacteria invading the pleural cavity. Parvimonas micra and Streptococcus constellatus are pathogens that rarely cause pneumonia with empyema. Herein, a case of severe empyema caused by these two pathogens, confirmed by metagenomic next-generation sequencing (mNGS) of pleural effusion cultures, is reported. A male Chinese patient in his late sixties presented with wheezing, cough, sputum expectoration, and fever. Blood and sputum cultures were negative for pathogens, but the pleural effusion culture was positive for S. constellatus, and was also found to contain P. micra, confirmed by mNGS. The patient's symptoms improved after treatment with cefoperazone/sulbactam and moxifloxacin. Pneumonia caused by P. micra and S. constellatus is rare; however, coinfection with these pathogens may cause severe pneumonia, with or without empyema.
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Affiliation(s)
- Yao Duan
- General Internal Medicine Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Wenshi Feng
- General Internal Medicine Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Yuxin Shen
- General Internal Medicine Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Yue Li
- General Internal Medicine Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Ni Li
- General Internal Medicine Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Xuyan Chen
- General Internal Medicine Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Yiqun Wang
- General Internal Medicine Department, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
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Dadgar-Zankbar L, Shariati A, Bostanghadiri N, Elahi Z, Mirkalantari S, Razavi S, Kamali F, Darban-Sarokhalil D. Evaluation of enterotoxigenic Bacteroides fragilis correlation with the expression of cellular signaling pathway genes in Iranian patients with colorectal cancer. Infect Agent Cancer 2023; 18:48. [PMID: 37644520 PMCID: PMC10463534 DOI: 10.1186/s13027-023-00523-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 08/02/2023] [Indexed: 08/31/2023] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is one of the most common cancers all over the world, and dysbiosis in the gut microbiota may play a role in colorectal carcinogenesis. Bacteroides fragilis can lead to tumorigenesis by changing signaling pathways, including the WNT/β-catenin pathway. Therefore, in the present study, we investigated the correlation between the enterotoxigenic B. fragilis amount and the expression of signaling pathway genes involved in CRC. MATERIALS AND METHODS B. fragilis was determined in 30 tumors and adjacent healthy tissues by the qPCR method. Next, the relationship between enterotoxigenic B. fragilis and the expression of signaling pathway genes, including CCND1, TP53, BCL2, BAX, WNT, TCF, AXIN, APC, and CTNNB1 was investigated. Additionally, possible correlations between clinicopathological features of the tumor samples and the abundance of B. fragilis were analyzed. RESULTS The results showed that B. fragilis was detected in 100% of tumor samples and 86% of healthy tissues. Additionally, enterotoxigenic B. fragilis colonized 47% of all samples, and bft-1 toxin was the most frequently found isotype among the samples. The analysis showed that the high level of B. fragilis has a significant relationship with the high expression of AXIN, CTNNB1, and BCL2 genes. On the other hand, our results did not show any possible correlation between this bacterium and the clinicopathological features of the tumor sample. CONCLUSION B. fragilis had a higher abundance in the tumor samples than in healthy tissues, and this bacterium may lead to CRC by making changes in cellular signaling pathways and genes. Therefore, to better understand the physiological effects of B. fragilis on the inflammatory response and CRC, future research should focus on dissecting the molecular mechanisms by which this bacterium regulates cellular signaling pathways.
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Affiliation(s)
- Leila Dadgar-Zankbar
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Aref Shariati
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran
- Student Research Committee, Khomein University of Medical Sciences, Khomein, Iran
| | - Narjess Bostanghadiri
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Zahra Elahi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Shiva Mirkalantari
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Shabnam Razavi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Kamali
- Iran National Tumor Bank, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran
| | - Davood Darban-Sarokhalil
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
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7
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Wong CC, Yu J. Gut microbiota in colorectal cancer development and therapy. Nat Rev Clin Oncol 2023:10.1038/s41571-023-00766-x. [PMID: 37169888 DOI: 10.1038/s41571-023-00766-x] [Citation(s) in RCA: 77] [Impact Index Per Article: 77.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2023] [Indexed: 05/13/2023]
Abstract
Colorectal cancer (CRC) is one of the commonest cancers globally. A unique aspect of CRC is its intimate association with the gut microbiota, which forms an essential part of the tumour microenvironment. Research over the past decade has established that dysbiosis of gut bacteria, fungi, viruses and Archaea accompanies colorectal tumorigenesis, and these changes might be causative. Data from mechanistic studies demonstrate the ability of the gut microbiota to interact with the colonic epithelia and immune cells of the host via the release of a diverse range of metabolites, proteins and macromolecules that regulate CRC development. Preclinical and some clinical evidence also underscores the role of the gut microbiota in modifying the therapeutic responses of patients with CRC to chemotherapy and immunotherapy. Herein, we summarize our current understanding of the role of gut microbiota in CRC and outline the potential translational and clinical implications for CRC diagnosis, prevention and treatment. Emphasis is placed on how the gut microbiota could now be better harnessed by developing targeted microbial therapeutics as chemopreventive agents against colorectal tumorigenesis, as adjuvants for chemotherapy and immunotherapy to boost drug efficacy and safety, and as non-invasive biomarkers for CRC screening and patient stratification. Finally, we highlight the hurdles and potential solutions to translating our knowledge of the gut microbiota into clinical practice.
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Affiliation(s)
- Chi Chun Wong
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jun Yu
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China.
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Valciukiene J, Strupas K, Poskus T. Tissue vs. Fecal-Derived Bacterial Dysbiosis in Precancerous Colorectal Lesions: A Systematic Review. Cancers (Basel) 2023; 15:cancers15051602. [PMID: 36900392 PMCID: PMC10000868 DOI: 10.3390/cancers15051602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/19/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
Alterations in gut microbiota play a pivotal role in the adenoma-carcinoma sequence. However, there is still a notable lack of the correct implementation of tissue and fecal sampling in the setting of human gut microbiota examination. This study aimed to review the literature and to consolidate the current evidence on the use of mucosa and a stool-based matrix investigating human gut microbiota changes in precancerous colorectal lesions. A systematic review of papers from 2012 until November 2022 published on the PubMed and Web of Science databases was conducted. The majority of the included studies have significantly associated gut microbial dysbiosis with premalignant polyps in the colorectum. Although methodological differences hampered the precise fecal and tissue-derived dysbiosis comparison, the analysis revealed several common characteristics in stool-based and fecal-derived gut microbiota structures in patients with colorectal polyps: simple or advanced adenomas, serrated lesions, and carcinomas in situ. The mucosal samples considered were more relevant for the evaluation of microbiota's pathophysiological involvement in CR carcinogenesis, while non-invasive stool sampling could be beneficial for early CRC detection strategies in the future. Further studies are required to identify and validate mucosa-associated and luminal colorectal microbial patterns and their role in CRC carcinogenesis, as well as in the clinical setting of human microbiota studies.
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Guo Y, Ouyang Z, He W, Zhang J, Qin Q, Jiao M, Muyldermans S, Zheng F, Wen Y. Screening and epitope characterization of diagnostic nanobody against total and activated Bacteroides fragilis toxin. Front Immunol 2023; 14:1065274. [PMID: 36845160 PMCID: PMC9950733 DOI: 10.3389/fimmu.2023.1065274] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 01/19/2023] [Indexed: 02/12/2023] Open
Abstract
Enterotoxigenic Bacteroides fragilis (ETBF) can rapidly secrete an enterotoxin termed B. fragilis toxin (BFT), which is thought to be the only recognized virulence factor in ETBF. ETBF can cause acute diarrhea, inflammatory bowel disease (IBD), colorectal cancer, and breast cancer. BFT is divided into three subtypes, BFT1, BFT2, and BFT3. BFT1 is the most widely distributed in human B. fragilis isolates. BFT can be used as a biomarker for predicting the inflammation-cancer transformation of intestine and breast. Nanobodies have the advantages of small structure, complete antigen recognition capacity, rapid selection via phage display technology, and can be massively produced in microbial expression systems. Nanobodies have become a powerful tool for medical diagnosis and treatment. This study focuses on screening and structural characterization of nanobodies targeting full length and active BFT. By constructing prokaryotic expression systems to obtain recombinant BFT1 protein, high purity BFT1 protein was used to immunize alpacas. Phage display technology was used to construct a phage display library. The positive clones were selected by bio-panning, and the isothermal titration calorimetry was used to select high-affinity nanobodies. Then the three-dimensional structures of BFT1:Nb2.82 and BFT1:Nb3.27 were solved by crystal X-ray diffraction. We got two kinds of nanobodies, Nb2.82 targeting the BFT1 prodomain and Nb3.27 recognizing the BFT1 catalytic domain. This study provides a new strategy for the early diagnosis of ETBF and the possibility for BFT as a biomarker for diagnosing diseases.
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Affiliation(s)
- Yucheng Guo
- Center for Microbiome Research of Med-X Institute, The Key Laboratory of Environment and Genes Related to Disease of Ministry of Education, The First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Zhenlin Ouyang
- Center for Microbiome Research of Med-X Institute, The Key Laboratory of Environment and Genes Related to Disease of Ministry of Education, The First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Wenbo He
- Center for Microbiome Research of Med-X Institute, The Key Laboratory of Environment and Genes Related to Disease of Ministry of Education, The First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Jiaxin Zhang
- Center for Microbiome Research of Med-X Institute, The Key Laboratory of Environment and Genes Related to Disease of Ministry of Education, The First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Qian Qin
- Center for Microbiome Research of Med-X Institute, The Key Laboratory of Environment and Genes Related to Disease of Ministry of Education, The First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Min Jiao
- Center for Microbiome Research of Med-X Institute, The Key Laboratory of Environment and Genes Related to Disease of Ministry of Education, The First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Serge Muyldermans
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Fang Zheng
- Center for Microbiome Research of Med-X Institute, The Key Laboratory of Environment and Genes Related to Disease of Ministry of Education, The First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, China,*Correspondence: Yurong Wen, ; Fang Zheng,
| | - Yurong Wen
- Center for Microbiome Research of Med-X Institute, The Key Laboratory of Environment and Genes Related to Disease of Ministry of Education, The First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, China,*Correspondence: Yurong Wen, ; Fang Zheng,
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Parvimonas micra activates the Ras/ERK/c-Fos pathway by upregulating miR-218-5p to promote colorectal cancer progression. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2023; 42:13. [PMID: 36627634 PMCID: PMC9830783 DOI: 10.1186/s13046-022-02572-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 12/14/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Colorectal cancer (CRC) is the third most common cancer in the world, and a strong relationship exists between CRC and gut microbiota, which affects the occurrence, development, and metastasis of cancer. Bioinformatics-based analyses revealed that the abundance of Parvimonas micra (P. micra) in the feces of patients with cancer is significantly higher than that in healthy people. Therefore, an important relationship may exist between P. micra and CRC. METHODS We first confirmed that P. micra can promote the proliferation of cell lines through cell experiments and mouse models. Then we selected the signaling pathways and content of exosomes to promote the development of CRC by transcriptomics and microRNA sequencing. Finally, we confirmed that P. micra promoted CRC development through miR-218-5p/Ras/ERK/c-Fos pathway through the in vivo and in vitro experiments. RESULTS First, it was confirmed by in vitro and in vivo experiments that P. micra can promote the development of CRC. Transcriptome analysis after the coincubation of bacteria and cells revealed that P. micra promoted cell proliferation by activating the Ras/ERK/c-Fos pathway. Furthermore, microRNA sequencing analysis of the cells and exosomes showed that miR-218-5p and protein tyrosine phosphatase receptor R (PTPRR) were the key factors involved in activating the Ras/ERK/c-Fos pathway, and the miR-218-5p inhibitor was used to confirm the role of microRNA in xenograft mice. CONCLUSION This experiment confirmed that P. micra promoted the development of CRC by upregulating miR-218-5p expression in cells and exosomes, inhibiting PTPRR expression, and ultimately activating the Ras/ERK/c-Fos signaling pathway.
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Wang L, Yu KC, Hou YQ, Guo M, Yao F, Chen ZX. Gut microbiome in tumorigenesis and therapy of colorectal cancer. J Cell Physiol 2023; 238:94-108. [PMID: 36409765 DOI: 10.1002/jcp.30917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 11/09/2022] [Accepted: 11/09/2022] [Indexed: 11/22/2022]
Abstract
Colorectal cancer (CRC) is the malignant tumor with the highest incidence in the digestive system, and the gut microbiome plays a crucial role in CRC tumorigenesis and therapy. The gastrointestinal tract is the organ harboring most of the microbiota in humans. Changes in the gut microbiome in CRC patients suggest possible host-microbe interactions, thereby hinting the potential tumorigenesis, which provides new perspective for preventing, diagnosing, or treating CRC. In this review, we discuss the effects of gut microbiome dysbiosis on CRC, and reveal the mechanisms by which gut microbiome dysbiosis leads to CRC. Gut microbiome modulation with the aim to reverse the established gut microbial dysbiosis is a novel strategy for the prevention and treatment of CRC. In addition, this review summarizes that probiotic antagonize CRC tumorigenesis by protecting intestinal barrier function, inhibiting cancer cell proliferation, resisting oxidative stress, and enhancing host immunity. Finally, we highlight clinical applications of the gut microbiome, such as gut microbiome analysis-based biomarker screening and prediction, and microbe modulation-based CRC prevention, treatment enhancement, and treatment side effect reduction. This review provides the reference for the clinical application of gut microbiome in the prevention and treatment of CRC.
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Affiliation(s)
- Ling Wang
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, People's Republic of China
- Hubei Hongshan Laboratory, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, People's Republic of China
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Life Science and Technology, Interdisciplinary Sciences Institute, Huazhong Agricultural University, Wuhan, People's Republic of China
- Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen, People's Republic of China
| | - Ke-Chun Yu
- Hubei Hongshan Laboratory, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, People's Republic of China
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Life Science and Technology, Interdisciplinary Sciences Institute, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Yun-Qing Hou
- Hubei Hongshan Laboratory, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, People's Republic of China
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Life Science and Technology, Interdisciplinary Sciences Institute, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Min Guo
- Hubei Hongshan Laboratory, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, People's Republic of China
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Life Science and Technology, Interdisciplinary Sciences Institute, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Fan Yao
- Hubei Hongshan Laboratory, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, People's Republic of China
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Life Science and Technology, Interdisciplinary Sciences Institute, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Zhen-Xia Chen
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, People's Republic of China
- Hubei Hongshan Laboratory, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, People's Republic of China
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Life Science and Technology, Interdisciplinary Sciences Institute, Huazhong Agricultural University, Wuhan, People's Republic of China
- Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen, People's Republic of China
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Wang Z, Dan W, Zhang N, Fang J, Yang Y. Colorectal cancer and gut microbiota studies in China. Gut Microbes 2023; 15:2236364. [PMID: 37482657 PMCID: PMC10364665 DOI: 10.1080/19490976.2023.2236364] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 07/10/2023] [Indexed: 07/25/2023] Open
Abstract
Colorectal cancer (CRC) is the third most common malignant tumor worldwide. The incidence and mortality rates of CRC have been increasing in China, possibly due to economic development, lifestyle, and dietary changes. Evidence suggests that gut microbiota plays an essential role in the tumorigenesis of CRC. Gut dysbiosis, specific pathogenic microbes, metabolites, virulence factors, and microbial carcinogenic mechanisms contribute to the initiation and progression of CRC. Gut microbiota biomarkers have potential translational applications in CRC screening and early diagnosis. Gut microbiota-related interventions could improve anti-tumor therapy's efficacy and severe intestinal toxic effects. Chinese researchers have made many achievements in the relationship between gut microbiota and CRC, although some challenges remain. This review summarizes the current evidence from China on the role of gut microbiota in CRC, mainly including the gut microbiota characteristics, especially Fusobacterium nucleatum and Parvimonas micra, which have been identified to be enriched in CRC patients; microbial pathogens such as F. nucleatum and enterotoxigenic Bacteroides fragilis, and P. micra, which Chinese scientists have extensively studied; diagnostic biomarkers especially F. nucleatum; therapeutic effects, including microecological agents represented by certain Lactobacillus strains, fecal microbiota transplantation, and traditional Chinese medicines such as Berberine and Curcumin. More efforts should be focused on exploring the underlying mechanisms of microbial pathogenesis of CRC and providing novel gut microbiota-related therapeutic and preventive strategies.
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Affiliation(s)
- Zikai Wang
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Wanyue Dan
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- Medical School, Nankai University, Tianjin, China
| | - Nana Zhang
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Jingyuan Fang
- Division of Gastroenterology and Hepatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yunsheng Yang
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
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Zhang H, Wu J, Ji D, Liu Y, Lu S, Lin Z, Chen T, Ao L. Microbiome analysis reveals universal diagnostic biomarkers for colorectal cancer across populations and technologies. Front Microbiol 2022; 13:1005201. [PMID: 36406447 PMCID: PMC9668862 DOI: 10.3389/fmicb.2022.1005201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/05/2022] [Indexed: 01/19/2024] Open
Abstract
The gut microbial dysbiosis is a risk of colorectal cancer (CRC) and some bacteria have been reported as potential markers for CRC diagnosis. However, heterogeneity among studies with different populations and technologies lead to inconsistent results. Here, we investigated six metagenomic profiles of stool samples from healthy controls (HC), colorectal adenoma (CA) and CRC, and six and four genera were consistently altered between CRC and HC or CA across populations, respectively. In FengQ cohort, which composed with 61 HC, 47 CA, and 46 CRC samples, a random forest (RF) model composed of the six genera, denoted as signature-HC, distinguished CRC from HC with an area under the curve (AUC) of 0.84. Similarly, another RF model composed of the four universal genera, denoted as signature-CA, discriminated CRC from CA with an AUC of 0.73. These signatures were further validated in five metagenomic sequencing cohorts and six independent 16S rRNA gene sequencing cohorts. Interestingly, three genera overlapped in the two models (Porphyromonas, Parvimonas and Peptostreptococcus) were with very low abundance in HC and CA, but sharply increased in CRC. A concise RF model on the three genera distinguished CRC from HC or CA with AUC of 0.87 and 0.67, respectively. Functional gene family analysis revealed that Kyoto Encyclopedia of Genes and Genomes Orthogroups categories which were significantly correlated with markers in signature-HC and signature-CA were mapped into pathways related to lipopolysaccharide and sulfur metabolism, which might be vital risk factors of CRC development. Conclusively, our study identified universal bacterial markers across populations and technologies as potential aids in non-invasive diagnosis of CRC.
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Affiliation(s)
- Huarong Zhang
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Junling Wu
- Fujian Key Laboratory of Medical Bioinformatics, Department of Bioinformatics, School of Medical Technology and Engineering, Fujian Medical University, Fuzhou, China
| | - Daihan Ji
- Fujian Key Laboratory of Medical Bioinformatics, Department of Bioinformatics, School of Medical Technology and Engineering, Fujian Medical University, Fuzhou, China
| | - Yijuan Liu
- Fujian Key Laboratory of Medical Bioinformatics, Department of Bioinformatics, School of Medical Technology and Engineering, Fujian Medical University, Fuzhou, China
- Department of Gastroenterology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Shuting Lu
- Fujian Key Laboratory of Medical Bioinformatics, Department of Bioinformatics, School of Medical Technology and Engineering, Fujian Medical University, Fuzhou, China
| | - Zeman Lin
- Fujian Key Laboratory of Medical Bioinformatics, Department of Bioinformatics, School of Medical Technology and Engineering, Fujian Medical University, Fuzhou, China
| | - Ting Chen
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Lu Ao
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Medical Bioinformatics, Department of Bioinformatics, School of Medical Technology and Engineering, Fujian Medical University, Fuzhou, China
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Abstract
INTRODUCTION Colorectal cancer (CRC) is the second leading cause of cancer-related deaths globally. Nonetheless, with early detection of CRC or its precancerous lesions, mortality, and CRC incidence can be reduced. Although colonoscopy is currently the gold standard for CRC screening and diagnosis, its invasive nature, and troublesome bowel preparation deter patient participation. Therefore, there is a need to expand the use of noninvasive or minimally invasive methods to increase patient compliance. AREAS COVERED This review summarizes advances in different methods for CRC screening, including stool bacterial and metagenomic markers, fecal proteins, genetic and epigenetic markers in blood and stools, and imaging modalities. The cost-effectiveness of these methods is also discussed. FIT is more cost-effective compared to virtual colonoscopy, mSEPT9 test, and Multitarget Stool DNA test, while the cost-effectiveness of other noninvasive methods requires further evaluation. EXPERT OPINION Recent evidence has well demonstrated the usefulness of gut microbiome and certain fecal bacterial markers in the noninvasive diagnosis of CRC and its precancerous lesions. Many of the fecal biomarkers, from host cells or the gut environment, show better diagnostic sensitivity than FIT. New screening tests based on these fecal biomarkers can be expected to replace FIT with higher cost-effectiveness in the near future.
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Affiliation(s)
- Sarah Cheuk Hei Chan
- Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Jessie Qiaoyi Liang
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, Cuhk Shenzhen Research Institute, the Chinese University of Hong Kong, Shatin, Hong Kong, China
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