Related Experiment Video
Updated: Jan 28, 2026
09:03
Forward Genetic Approaches in Chlamydia trachomatis
Published on: October 23, 2013
13.3K
Chlamydia trachomatis Growth and Cytokine mRNA Response in a Prostate Cancer Cell Line
Ivan M Petyaev1, Naylia A Zigangirova2, Elena Y Morgunova2
1Lycotec Ltd., Granta Park, Cambridge CB21 6GP, UK.
Advances in Urology
|February 26, 2019
Summary
Chlamydia trachomatis efficiently infects and replicates in prostate cancer cells, increasing key cytokine mRNA linked to tumor growth. This suggests a potential role for C. trachomatis in prostate cancer progression.
Area of Science:
- Microbiology
- Oncology
- Cell Biology
Background:
- Chlamydia trachomatis (C. trachomatis) is a common bacterial pathogen.
- Prostate cancer is a leading cause of cancer-related deaths in men.
- The role of infectious agents in cancer progression is an area of active research.
Purpose of the Study:
- To investigate the propagation efficiency of C. trachomatis in a malignant prostate cell line (CWR-R1).
- To determine the effect of C. trachomatis infection on the expression of cytokine mRNA relevant to tumor progression.
- To compare C. trachomatis infection dynamics in CWR-R1 cells versus a standard chlamydial research cell line (McCoy cells).
Main Methods:
- Cell culture of CWR-R1 and McCoy cells.
- Infection of cell lines with C. trachomatis.
- RNA analysis for cytokine mRNA expression (interleukin-6, fibroblast growth factor-2) and chlamydial gene (EUO).
- Immunostaining using major outer membrane protein (MOMP) antibody.
- Analysis at 24, 48, and 72 hours postinfection (hpi).
Main Results:
- C. trachomatis propagated more efficiently in CWR-R1 cells compared to McCoy cells, particularly at 24 hpi.
- CWR-R1 cells showed larger inclusion bodies and more intense MOMP staining early in infection.
- Infection led to increased mRNA expression for interleukin-6 and fibroblast growth factor-2 in CWR-R1 cells.
- Increased mRNA for the chlamydial gene EUO was observed in CWR-R1 cells at 24 hpi.
Conclusions:
- The early phase of C. trachomatis infection is more efficient in the CWR-R1 prostate cancer cell line.
- C. trachomatis infection upregulates key cytokine genes (IL-6, FGF-2) associated with prostate cancer progression and chemoresistance.
- These findings suggest a potential role for C. trachomatis in promoting prostate cancer malignancy and metastasis.
More Related Videos
Related Concept Videos
02:22Regulated mRNA Transport
7.0K
In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...
7.0K
02:01pre-mRNA Processing
57.4K
In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl...
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl...
57.4K
02:31Nuclear Export of mRNA
8.8K
Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
8.8K
01:29Bacterial Phylum Chlamydiae
489
The phylum Chlamydiae or Chlamydiota is composed of a single order, Chlamydiales. This phylum consists entirely of obligate intracellular parasites that infect eukaryotic hosts. While human pathogens within this group have been studied extensively, the phylum encompasses many species capable of interacting with various eukaryotic organisms. Members of Chlamydiae are typically small cocci, approximately 0.5 μm in diameter, and exhibit a distinctive developmental cycle. As is characteristic...
489
02:27Nonsense-mediated mRNA Decay
11.8K
The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
11.8K
02:41Chromatin Structure Regulates pre-mRNA Processing
8.2K
In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
The chromatin structure, especially...
8.2K