Cargando…

Metagenomic Shotgun Sequencing of Endocervical, Vaginal, and Rectal Samples among Fijian Women with and without Chlamydia trachomatis Reveals Disparate Microbial Populations and Function across Anatomic Sites: a Pilot Study

Chlamydia trachomatis is a sexually transmitted pathogen and a global public health concern. Little is known about the microbial composition and function across endocervical, vaginal, and rectal microbiomes in the context of C. trachomatis infection. We evaluated the microbiomes of 10 age-matched hi...

Descripción completa

Detalles Bibliográficos
Autores principales: Bommana, Sankhya, Richards, Gracie, Kama, Mike, Kodimerla, Reshma, Jijakli, Kenan, Read, Timothy D., Dean, Deborah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Society for Microbiology 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9241848/
https://www.ncbi.nlm.nih.gov/pubmed/35579443
http://dx.doi.org/10.1128/spectrum.00105-22
_version_ 1784737913197559808
author Bommana, Sankhya
Richards, Gracie
Kama, Mike
Kodimerla, Reshma
Jijakli, Kenan
Read, Timothy D.
Dean, Deborah
author_facet Bommana, Sankhya
Richards, Gracie
Kama, Mike
Kodimerla, Reshma
Jijakli, Kenan
Read, Timothy D.
Dean, Deborah
author_sort Bommana, Sankhya
collection PubMed
description Chlamydia trachomatis is a sexually transmitted pathogen and a global public health concern. Little is known about the microbial composition and function across endocervical, vaginal, and rectal microbiomes in the context of C. trachomatis infection. We evaluated the microbiomes of 10 age-matched high-risk Fijian women with and without C. trachomatis using metagenomic shotgun sequencing (MSS). Lactobacillus iners and Lactobacillus crispatus dominated the vagina and endocervix of uninfected women. Species often found in higher relative abundance in bacterial vaginosis (BV)—Mageeibacillus indolicus, Prevotella spp., Sneathia spp., Gardnerella vaginalis, and Veillonellaceae spp.—were dominant in C. trachomatis-infected women. This combination of BV pathogens was unique to Pacific Islanders compared to previously studied groups. The C. trachomatis-infected endocervix had a higher diversity of microbiota and microbial profiles that were somewhat different from those of the vagina. However, community state type III (CST-III) and CST-IV predominated, reflecting pathogenic microbiota regardless of C. trachomatis infection status. Rectal microbiomes were dominated by Prevotella and Bacteroides, although four women had unique microbiomes with Gardnerella, Akkermansia, Bifidobacterium, and Brachyspira. A high level of microbial similarity across microbiomes in two C. trachomatis-infected women suggested intragenitorectal transmission. A number of metabolic pathways in the endocervix, driven by BV pathogens and C. trachomatis to meet nutritional requirements for survival/growth, 5-fold higher than that in the vagina indicated that endocervical microbial functions are likely more diverse and complex than those in the vagina. Our novel findings provide the impetus for larger prospective studies to interrogate microbial/microbiome interactions that promote C. trachomatis infection and better define the unique genitorectal microbiomes of Pacific Islanders. IMPORTANCE Chlamydia trachomatis is the primary cause of bacterial sexually transmitted infections worldwide, with a disturbing increase in annual rates. While there is a plethora of data on healthy and pathogenic vaginal microbiomes—defining microbial profiles and associations with sexually transmitted infections (STIs)—far fewer studies have similarly examined the endocervix or rectum. Further, vulnerable populations, such as Pacific Islanders, remain underrepresented in research. We investigated the microbial composition, structure, and function of these anatomic microbiomes using metagenomic shotgun sequencing among a Fijian cohort. We found, primarily among C. trachomatis-infected women, unique microbial profiles in endocervical, vaginal, and rectal microbiomes with an increased diversity and more complex microbial pathways in endocervical than vaginal microbiomes. Similarities in microbiome composition across sites for some women suggested intragenitorectal transmission. These novel insights into genitorectal microbiomes and their purported function require prospective studies to better define Pacific Islander microbiomes and microbial/microbiome interactions that promote C. trachomatis infection.
format Online
Article
Text
id pubmed-9241848
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher American Society for Microbiology
record_format MEDLINE/PubMed
spelling pubmed-92418482022-06-30 Metagenomic Shotgun Sequencing of Endocervical, Vaginal, and Rectal Samples among Fijian Women with and without Chlamydia trachomatis Reveals Disparate Microbial Populations and Function across Anatomic Sites: a Pilot Study Bommana, Sankhya Richards, Gracie Kama, Mike Kodimerla, Reshma Jijakli, Kenan Read, Timothy D. Dean, Deborah Microbiol Spectr Research Article Chlamydia trachomatis is a sexually transmitted pathogen and a global public health concern. Little is known about the microbial composition and function across endocervical, vaginal, and rectal microbiomes in the context of C. trachomatis infection. We evaluated the microbiomes of 10 age-matched high-risk Fijian women with and without C. trachomatis using metagenomic shotgun sequencing (MSS). Lactobacillus iners and Lactobacillus crispatus dominated the vagina and endocervix of uninfected women. Species often found in higher relative abundance in bacterial vaginosis (BV)—Mageeibacillus indolicus, Prevotella spp., Sneathia spp., Gardnerella vaginalis, and Veillonellaceae spp.—were dominant in C. trachomatis-infected women. This combination of BV pathogens was unique to Pacific Islanders compared to previously studied groups. The C. trachomatis-infected endocervix had a higher diversity of microbiota and microbial profiles that were somewhat different from those of the vagina. However, community state type III (CST-III) and CST-IV predominated, reflecting pathogenic microbiota regardless of C. trachomatis infection status. Rectal microbiomes were dominated by Prevotella and Bacteroides, although four women had unique microbiomes with Gardnerella, Akkermansia, Bifidobacterium, and Brachyspira. A high level of microbial similarity across microbiomes in two C. trachomatis-infected women suggested intragenitorectal transmission. A number of metabolic pathways in the endocervix, driven by BV pathogens and C. trachomatis to meet nutritional requirements for survival/growth, 5-fold higher than that in the vagina indicated that endocervical microbial functions are likely more diverse and complex than those in the vagina. Our novel findings provide the impetus for larger prospective studies to interrogate microbial/microbiome interactions that promote C. trachomatis infection and better define the unique genitorectal microbiomes of Pacific Islanders. IMPORTANCE Chlamydia trachomatis is the primary cause of bacterial sexually transmitted infections worldwide, with a disturbing increase in annual rates. While there is a plethora of data on healthy and pathogenic vaginal microbiomes—defining microbial profiles and associations with sexually transmitted infections (STIs)—far fewer studies have similarly examined the endocervix or rectum. Further, vulnerable populations, such as Pacific Islanders, remain underrepresented in research. We investigated the microbial composition, structure, and function of these anatomic microbiomes using metagenomic shotgun sequencing among a Fijian cohort. We found, primarily among C. trachomatis-infected women, unique microbial profiles in endocervical, vaginal, and rectal microbiomes with an increased diversity and more complex microbial pathways in endocervical than vaginal microbiomes. Similarities in microbiome composition across sites for some women suggested intragenitorectal transmission. These novel insights into genitorectal microbiomes and their purported function require prospective studies to better define Pacific Islander microbiomes and microbial/microbiome interactions that promote C. trachomatis infection. American Society for Microbiology 2022-05-17 /pmc/articles/PMC9241848/ /pubmed/35579443 http://dx.doi.org/10.1128/spectrum.00105-22 Text en Copyright © 2022 Bommana et al. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Research Article
Bommana, Sankhya
Richards, Gracie
Kama, Mike
Kodimerla, Reshma
Jijakli, Kenan
Read, Timothy D.
Dean, Deborah
Metagenomic Shotgun Sequencing of Endocervical, Vaginal, and Rectal Samples among Fijian Women with and without Chlamydia trachomatis Reveals Disparate Microbial Populations and Function across Anatomic Sites: a Pilot Study
title Metagenomic Shotgun Sequencing of Endocervical, Vaginal, and Rectal Samples among Fijian Women with and without Chlamydia trachomatis Reveals Disparate Microbial Populations and Function across Anatomic Sites: a Pilot Study
title_full Metagenomic Shotgun Sequencing of Endocervical, Vaginal, and Rectal Samples among Fijian Women with and without Chlamydia trachomatis Reveals Disparate Microbial Populations and Function across Anatomic Sites: a Pilot Study
title_fullStr Metagenomic Shotgun Sequencing of Endocervical, Vaginal, and Rectal Samples among Fijian Women with and without Chlamydia trachomatis Reveals Disparate Microbial Populations and Function across Anatomic Sites: a Pilot Study
title_full_unstemmed Metagenomic Shotgun Sequencing of Endocervical, Vaginal, and Rectal Samples among Fijian Women with and without Chlamydia trachomatis Reveals Disparate Microbial Populations and Function across Anatomic Sites: a Pilot Study
title_short Metagenomic Shotgun Sequencing of Endocervical, Vaginal, and Rectal Samples among Fijian Women with and without Chlamydia trachomatis Reveals Disparate Microbial Populations and Function across Anatomic Sites: a Pilot Study
title_sort metagenomic shotgun sequencing of endocervical, vaginal, and rectal samples among fijian women with and without chlamydia trachomatis reveals disparate microbial populations and function across anatomic sites: a pilot study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9241848/
https://www.ncbi.nlm.nih.gov/pubmed/35579443
http://dx.doi.org/10.1128/spectrum.00105-22
work_keys_str_mv AT bommanasankhya metagenomicshotgunsequencingofendocervicalvaginalandrectalsamplesamongfijianwomenwithandwithoutchlamydiatrachomatisrevealsdisparatemicrobialpopulationsandfunctionacrossanatomicsitesapilotstudy
AT richardsgracie metagenomicshotgunsequencingofendocervicalvaginalandrectalsamplesamongfijianwomenwithandwithoutchlamydiatrachomatisrevealsdisparatemicrobialpopulationsandfunctionacrossanatomicsitesapilotstudy
AT kamamike metagenomicshotgunsequencingofendocervicalvaginalandrectalsamplesamongfijianwomenwithandwithoutchlamydiatrachomatisrevealsdisparatemicrobialpopulationsandfunctionacrossanatomicsitesapilotstudy
AT kodimerlareshma metagenomicshotgunsequencingofendocervicalvaginalandrectalsamplesamongfijianwomenwithandwithoutchlamydiatrachomatisrevealsdisparatemicrobialpopulationsandfunctionacrossanatomicsitesapilotstudy
AT jijaklikenan metagenomicshotgunsequencingofendocervicalvaginalandrectalsamplesamongfijianwomenwithandwithoutchlamydiatrachomatisrevealsdisparatemicrobialpopulationsandfunctionacrossanatomicsitesapilotstudy
AT readtimothyd metagenomicshotgunsequencingofendocervicalvaginalandrectalsamplesamongfijianwomenwithandwithoutchlamydiatrachomatisrevealsdisparatemicrobialpopulationsandfunctionacrossanatomicsitesapilotstudy
AT deandeborah metagenomicshotgunsequencingofendocervicalvaginalandrectalsamplesamongfijianwomenwithandwithoutchlamydiatrachomatisrevealsdisparatemicrobialpopulationsandfunctionacrossanatomicsitesapilotstudy