Navigation Links
Novel mutations define 2 types of bone tumor
Date:10/27/2013

Scientists have made a rare discovery that allows them to attribute two types of tumour almost entirely to specific mutations that lie in two related genes.

These mutations are found in nearly 100 per cent of patients suffering from two rare bone tumours; chondroblastoma and giant cell tumour of the bone.

Chondroblastoma and giant cell tumour of bone are benign bone tumours that primarily affect adolescents and young adults, respectively. They can be extremely debilitating tumours and recur despite surgery. Occasionally, these tumours can be difficult to differentiate from highly malignant bone cancers. The mutations found in this study may be used for diagnosis of chondroblastoma and giant cell tumour. In addition, the mutations offer a starting point into research for a specific treatment against these tumours.

"This is an exceptional, if not a once in a lifetime discovery for the team," says Dr Peter Campbell, co-lead author of the study from the Wellcome Trust Sanger Institute. "What we normally see is that the same mutations occur in many different types of tumour. These mutations, however, are highly specific to these tumours. Moreover, our findings suggest that these mutations are the key, if not the sole, driving force behind these tumours."

The team sequenced the full genomes of six chondroblastoma tumours and found that all six tumours had mutations in one of two related genes, H3F3A and H3F3B, which produce an identical protein, called histone 3.3.

Extending the study to more chondroblastoma tumours and to other bone tumours, they were able to verify that this mutation was found in almost all cases of chondroblastoma. Interestingly, the team also observed that most cases of a different type of bone tumour, giant cell tumour of bone, have a mutation in the H3F3A gene, albeit in a different position in the gene. A pattern emerged where both tumour types, chondroblastoma and giant cell tumour of bone, are defined by specific histone 3.3 mutations.

The team pinpointed the specificity of these mutations to affecting a single amino acid residue on the histone 3.3 protein; G34W amino acid residue underlies giant cell tumour of the bone and K36M amino acid residue underlies chondroblastoma.

"The high prevalence of these mutations in each tumour type is striking, but what's most remarkable is the unprecedented specificity of these mutations," says Dr Sam Behjati, first author from the Wellcome trust Sanger Institute. "The specificity of the mutations not only informs us about how these tumours develop, but also points to some fundamental function of these genes in normal bone development."

"Our findings will be highly beneficial to clinicians as we now have a diagnostic marker to differentiate chondroblastoma and giant cell tumour of bones from other bone tumours," says Professor Adrienne Flanagan, co-lead author from the Royal National Orthopaedic Hospital, and UCL Cancer Institute. "This study highlights the importance of continuing to sequence all types of human cancer."

"We are also extremely grateful to our patients and collaborators, without their help we would not have been able to study these extremely rare diseases," adds Professor Flanagan.


'/>"/>

Contact: Aileen Sheehy
press.office@sanger.ac.uk
0044-012-234-92368
Wellcome Trust Sanger Institute
Source:Eurekalert

Related biology news :

1. Researchers discover novel therapy for Crohns disease
2. New clinical trial explores novel noninvasive colon cancer screening test
3. Notre Dame researchers using novel method to combat malaria drug resistance
4. Unique adaptations to a symbiotic lifestyle reveal novel targets for aphid insecticides
5. Key proteins newly discovered form and function may provide novel cancer treatment target
6. Novel discovery by NUS scientists paves the way for more effective treatment of cancers
7. London researchers discover novel mechanism involved in key immune response
8. Mexican rock heroes trial novel green trading system
9. VTT and GE Healthcare developing novel biomarkers to predict Alzheimers disease
10. Cleveland Clinic researchers receive $5 million grant to discover novel pathways to heart disease
11. Novel nano-structures to realize hydrogens energy potential
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/3/2017)... , April 3, 2017  Data ... precision engineering platform, detected a statistically significant ... product prior to treatment and objective response ... the potential to predict whether cancer patients ... to treatment, as well as to improve ...
(Date:3/29/2017)... CHICAGO , March 29, 2017  higi, the ... ecosystem in North America , today ... Partners and the acquisition of EveryMove. The new investment ... extensive set of tools to transform population health activities ... and lifestyle data. higi collects and secures ...
(Date:3/24/2017)... Research and Markets has announced the addition of the "Global ... to 2025" report to their offering. ... The Global Biometric Vehicle Access System Market ... the next decade to reach approximately $1,580 million by 2025. ... for all the given segments on global as well as regional ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... Florida (PRWEB) , ... October 11, 2017 , ... ... Drug Administration (FDA) has granted orphan drug designation to SBT-100, its novel anti-STAT3 ... for the treatment of osteosarcoma. SBT-100 is able to cross the cell membrane ...
(Date:10/10/2017)... ... October 10, 2017 , ... Dr. Bob Harman, founder and CEO of ... Club. The event entitled “Stem Cells and Their Regenerative Powers,” was ... Dr. Harman, DVM, MPVM was joined by two human doctors: Peter B. Hanson, M.D., ...
(Date:10/10/2017)... ... 10, 2017 , ... The Pittcon Program Committee is pleased ... scientists who have made outstanding contributions to analytical chemistry and applied spectroscopy. Each ... leading conference and exposition for laboratory science, which will be held February 26-March ...
(Date:10/9/2017)... ... October 09, 2017 , ... The Giving ... marijuana products targeting the needs of consumers who are incorporating medical marijuana into ... in Phoenix, Arizona. , As operators of two successful Valley dispensaries, The Giving ...
Breaking Biology Technology: