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The molecular signature of human testicular peritubular cells revealed by single-cell analysis

ABSTRACT: The molecular signature of human testicular peritubular cells revealed by single-cell analysis

PROVIDER: PRJNA878506 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21491944.fastq.gz	Fastqsanger.gz
	SRR21491945.fastq.gz	Fastqsanger.gz
	SRR21491946.fastq.gz	Fastqsanger.gz
	SRR21491947.fastq.gz	Fastqsanger.gz
	SRR21491948.fastq.gz	Fastqsanger.gz

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The molecular signature of human testicular peritubular cells revealed by single-cell analysis

Project description:Peritubular cells of the human testis form a small compartment surrounding the seminiferous tubules. It contrast to rodents, it is composed of several cell layers and extracellular matrix. Peritubular cells are crucial for sperm transport and emerge as contributors to the spermatogonial stem cell niche, yet testicular peritubular cells are among the least known cell types of the human body. We employed single-cell RNA sequencing of cultured human testicular peritubular cells (HTPCs) isolated from testicular samples of donors with normal spermatogenesis and compared our data with recently published ex vivo data and, if available, with immunohistochemical data of the Human Protein Atlas. We observed a significant overlap between our results and genes expressed in vivo. Based on expression of a set of smooth muscle markers, HTPCs can be classified as smooth muscle cells. Small differences between in vivo/in vitro expressed genes may be due to plasticity/phenotypic switching. Plasticity was also shown upon addition of FCS to the culture medium. Based on transcriptome similarities four cellular states were observed. Characteristics of mesenchymal stromal cells and Leydig stem cells were noted, yet differentiation attempts into fat cells, bone cells or mature Leydig cells were not successful. Further analyses confirmed known stem cell niche-relevant factors (e.g. GDNF) and identified unknown functions e.g. the ability to produce retinoic acid. The results reveal that HTPCs upon isolation and culture are a highly adequate cellular model as they retain major characteristics. They therefore allow us to define the signature and functions of human testicular peritubular cells. The data may serve as a resource for future studies to better understand male (in)fertility.

2022-12-12 | GSE212944 | GEO

Proteomic insights into senescence of testicular peritubular cells from a nonhuman primate model

Project description:Age-related changes of the human testis may include morphological alterations, disturbed steroidogenesis and impaired spermatogenesis. However, the specific impact of cell age remains poorly understood and difficult to assess. Testicular peritubular cells fulfill essential functions, including sperm transport, contributions to the spermatogonial stem cell niche and paracrine interactions within the testis. To study their role in age-associated decline of testicular functions, we performed comprehensive proteome and secretome analyses of repeatedly passaged peritubular cells from Callithrix jacchus. This nonhuman primate model better reflects the human testicular biology than rodents and further gives access to young donors unavailable from humans. Among 5095 identified proteins, 583 were differentially abundant between samples with low and high passage numbers. The alterations indicate a reduced ability of senescent peritubular cells to contract and secrete proteins, as well as disturbances in NF-κB signaling and a reduced capacity to handle reactive oxygen species. Since this in vitro model may not exactly mirror all molecular aspects of in vivo aging, we investigated the proteomes and secretomes of testicular peritubular cells from young and old donors. Even though the age-related alterations at the protein level were less pronounced, we found evidence for impaired protein secretion, altered NF-κB signaling and reduced contractility of these in vivo aged peritubular cells.

2020-11-18 | PXD022165 | Pride

RNA-Seq of testicular peritubular myoid cells, other testicular cells, and other tissue smooth muscle-like cells

Project description:In addition to germ cell population, testes contain several types of somatic cells, including Sertoli cells, Leydig cells, and peritubular myoid (PTM) cells. PTM cells are a type of smooth muscle-like cells and have contraction ability. To identify a marker of PTM cells, we isolated primary cells and subsequently performed RNA-Seq of testicular peritubular myoid cells (PTM_1, PTM_2, PTM_3), testicular Sertoli cells (Sertoli_1, Sertoli_2, Sertoli_3), testicular Leydig cells (Leydig_1, Leydig_2, Leydig_3), testicular germ cells (Germ_1, Germ_2, Germ_3), vascular smooth muscle cells (VSMC_1, VSMC_2, VSMC_3), intestinal smooth muscle cells (ISMC_1, ISMC_2, ISMC_3), and tracheal smooth muscle cells (TSMC_1, TSMC_2, TSMC_3) using BGISEQ-500 platform (BGI, China).

2019-01-19 | GSE125303 | GEO

miRNA-Seq of testicular peritubular myoid cells, other testicular cells, and other tissue smooth muscle-like cells

Project description:In addition to germ cell population, testes contain several types of somatic cells, including Sertoli cells, Leydig cells, and peritubular myoid (PTM) cells. PTM cells are a type of smooth muscle-like cells and have contraction ability. To identify a marker of PTM cells, we isolated primary cells and subsequently performed miRNA-Seq of testicular peritubular myoid cells (PTM_1, PTM_2, PTM_3), testicular Sertoli cells (Sertoli_1, Sertoli_2, Sertoli_3), testicular Leydig cells (Leydig_1, Leydig_2, Leydig_3), testicular germ cells (Germ_1, Germ_2, Germ_3), vascular smooth muscle cells (VSMC_1, VSMC_2, VSMC_3), intestinal smooth muscle cells (ISMC_1, ISMC_2, ISMC_3), and tracheal smooth muscle cells (TSMC_1, TSMC_2, TSMC_3) using BGISEQ-500 platform (BGI, China).

2019-01-19 | GSE125302 | GEO

Effect of heat stress on mouse testicular peritubular myoid cells [miRNA-seq]

Project description:We performed miRNA-Seq of untreated testicular peritubular myoid cells (NC_1, NC_2, NC_3), and peritubular myoid cells that were collected 1 hour (H1_1, H1_2, H1_3) and 6 hours (H6_1, H6_2, H6_3) after heat treatment using BGISEQ-500 platform (BGI, China).

2019-01-24 | GSE125634 | GEO

Effect of heat stress on mouse testicular peritubular myoid cells [RNA-seq]

Project description:We performed RNA-Seq of untreated testicular peritubular myoid cells (NC_1, NC_2, NC_3), and peritubular myoid cells that were collected 1 hour (H1_1, H1_2, H1_3) and 6 hours (H6_1, H6_2, H6_3) after heat treatment using BGISEQ-500 platform (BGI, China).

2019-01-14 | GSE125010 | GEO

Effect of endothelin-1 (ET-1) on mouse testicular peritubular myoid cells [RNA-Seq]

Project description:PTM cells can be induced to contract by endothelin 1 (ET1). We performed RNA-Seq of untreated testicular peritubular myoid cells (PTM_1, PTM_2, PTM_3) and ET1-treated peritubular myoid cells (ET1_1, ET1_2, ET1_3) using BGISEQ-500 platform (BGI, China).

2019-01-15 | GSE125073 | GEO

Effect of endothelin-1 (ET-1) on mouse testicular peritubular myoid cells [miRNA-Seq]

Project description:PTM cells can be induced to contract by endothelin 1 (ET1). We performed miRNA-Seq of untreated testicular peritubular myoid cells (PTM_1, PTM_2, PTM_3) and ET1-treated peritubular myoid cells (ET1_1, ET1_2, ET1_3) using BGISEQ-500 platform (BGI, China).

2019-01-15 | GSE125074 | GEO

Characterization of a nonhuman primate model for the study of testicular peritubular cells – comparison with human testicular cells

Project description:Smooth-muscle-like peritubular cells make up the wall of semniferous tubules of men. These human testicular peritubular cells (HTPC) have been shown to fulfill different roles. They transport sperm, secrete various factors like GDNF (glial cell line derived neurotrophic factor) and are immunologically active. They might contribute to spermatogonial stem cell niche altering and testicular ageing. Previous studies were limited regarding heterogeneity (due to lifestyle, age, medical history etc.) and accessibility of HTPCs. To circumvent this problem a cellular primate model should be established. The proteome of 6 MKTPCs of individual healthy and young (2 or 3 years) donors was assessed to investigate the suitability as a model.

2018-06-06 | PXD009394 | Pride

The Molecular Signature of Human Testicular Peritubular Cells Revealed by Single-Cell Analysis.

Project description:Peritubular cells of the human testis form a small compartment surrounding the seminiferous tubules. They are crucial for sperm transport, and they emerge as contributors to the spermatogonial stem cell niche. They are among the least known cell types of the human body. We employed single-cell RNA sequencing of cultured human testicular peritubular cells (HTPCs), which had been isolated from testicular samples of donors with normal spermatogenesis. The significant overlap between our results and recently published ex vivo data indicates that HTPCs are a highly adequate cellular model to define and study these cells. Thus, based on the expression of several markers, HTPCs can be classified as testicular smooth muscle cells. Small differences between the in vivo/in vitro expressed genes may be due to cellular plasticity. Plasticity was also shown upon addition of FCS to the culture medium. Based on transcriptome similarities, four cellular states were identified. Further analyses confirmed the presence of known stem cell niche-relevant factors (e.g., GDNF) and identified unknown functions, e.g., the ability to produce retinoic acid. Therefore, HTPCs allow us to define the signature(s) and delineate the functions of human testicular peritubular cells. The data may also serve as a resource for future studies to better understand male (in)fertility.

| S-EPMC9688777 | biostudies-literature

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