Navigation Links
The pig whipworm genome may aid to treat autoimmune diseases

Shenzhen, June 15, 2014---An international team, composed of 11 institutions from six countries, including BGI, presented the whole-genome sequence of Trichuris suis, a parasitic worm in pig. Understanding the genetics mechanisms underlying the pig parasite may aid to modify the human immune response that could result in better treatments for autoimmune diseases, including inflammatory bowel disease (IBD) and multiple sclerosis. The latest research was published online in Nature Genetics.

The human whipworm (Trichuris) infects around 1 billion people worldwide and causes a disease (trichuriasis) that results in major socioeconomic loses. In contrast, the pig whipworm causes disease and losses in livestock, but it does not cause disease in humans. It's reported that pig whipworm infection could even prevent inflammatory disease in humans, and has been used to treat inflammatory bowel disease and multiple sclerosis.

In this study, researchers sequenced the genomes of single adult female and male pig whipworm at about 140-fold coverage, producing draft assemblies of 76 Mb and 81 Mb, respectively. It was previously reported that the XX and XY karyotypes for female and male whipworm, respectively, but in this study researchers found no evidence for a Y chromosome among the male-specific scaffolds, suggesting that the sex chromosomes were the smallest chromosomal pair and were morphologically very similar in both sexes.

Intriguingly, they found the microRNAs (miRNAs) seem to have a major role in regulating sexual development in this species. Among them, the tsu-miR-228 in male, and tsu-miR-236 and tsu-miR-252 in female worms were predicted to regulate and suppress key feminizing and masculinizing developmental genes, respectively. According to the authors, this is the first time they observed such results in a metazoan.

When investigating how pig whipworm regulates the host immune response, researchers explored the stage-, sex- and tissue-specific transcription of mRNAs and small noncoding RNAs. The secretory proteins showed high representation in transcriptome of pig whipworm. The peptidases, particularly the secreted peptidases upregulated during larval development and in the stichosome, seemed to have a central role in human autoimmune disorders, primarily through inhibiting inflammation. Researchers also constructed the models of inflammatory bowel disease and other autoimmune disorders, trying to figure out a way for parasite-derived therapies.

Li Hu, Project Manager from BGI, said, "The constructed pig whipworm genome sequence provides us a genetic resource for deeply investigating the mechanisms underlying human autoimmune diseases. Meanwhile, the pig whipworm-host interactions will shed new light on the control of helminth and other immunopathological diseases in human. "


Contact: Jia Liu
BGI Shenzhen

Related biology news :

1. Scientific breakthrough: International collaboration has sequence salmon genome
2. Autism Speaks to sequence worlds largest collection of autism genomes
3. Common bean genome sequence provides powerful tools to improve critical food crop
4. Sequencing of citrus genomes points to need for more genetic diversity to fight disease
5. Retracing early cultivation steps: Lessons from comparing citrus genomes
6. More than just a hill of beans: Phaseolus genome lends insights into nitrogen fixation
7. Genome sequences show how lemurs fight infection
8. 3,000 rice genome sequences made publicly available on World Hunger Day
9. HIV can cut and paste in the human genome
10. Untangling whole genomes of individual species from a microbial mix
11. The first termite genome fills a gap in social inset genomics
Post Your Comments:
(Date:6/7/2016)... 7, 2016  Syngrafii Inc. and San Antonio ... that includes integrating Syngrafii,s patented LongPen™ eSignature "Wet" ... collaboration will result in greater convenience for SACU ... while maintaining existing document workflow and compliance requirements. ... Highlights: ...
(Date:6/1/2016)... Favorable Government Initiatives Coupled With ... Identification to Boost Global Biometrics System Market Through 2021  ... report, " Global Biometrics Market By Type, By ... 2011 - 2021", the global biometrics market is projected ... of growing security concerns across various end use sectors ...
(Date:5/9/2016)... 9, 2016 Elevay is currently ... expanding freedom for high net worth professionals seeking travel ... globally connected world, there is still no substitute for ... duplicate sealing your deal with a firm handshake. This ... taking advantage of citizenship via investment programs like those ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... NEW YORK , June, 23, 2016  The ... students to envision new ways to harness living systems ... of Modern Art (MoMA) in New York ... more than 130 participating students, showcased projects at MoMA,s ... included Paola Antonelli , MoMA,s senior curator of ...
(Date:6/23/2016)... ... June 23, 2016 , ... In a new case report published today in ... patient who developed lymphedema after being treated for breast cancer benefitted from an injection ... for dealing with this debilitating, frequent side effect of cancer treatment. , ...
(Date:6/23/2016)... , June 23, 2016 On ... session at 4,833.32, down 0.22%; the Dow Jones Industrial Average ... 500 closed at 2,085.45, down 0.17%. has initiated coverage ... INFI ), Nektar Therapeutics (NASDAQ: NKTR ), Aralez ... Inc. (NASDAQ: BIND ). Learn more about these ...
(Date:6/23/2016)... FRANCISCO , June 22, 2016  Amgen (NASDAQ: ... sponsorship of the QB3@953 life sciences incubator ... human health. The shared laboratory space at QB3@953 was ... overcome a key obstacle for many early stage organizations ... part of the sponsorship, Amgen launched two "Amgen Golden ...
Breaking Biology Technology: