Hypomorphic Mutations in TONSL Cause SPONASTRIME Dysplasia
Cited 0 times inCited 0 times in
- Hypomorphic Mutations in TONSL Cause SPONASTRIME Dysplasia
- Chang, Hae Ryung; Cho, Sung Yoon; Lee, Jae Hoon; Lee, Eunkyung; Seo, Jieun; Lee, Hye Ran; Cavalcanti, Denise P.; Makitie, Outi; Valta, Helena; Girisha, Katta M.; Lee, Chung; Neethukrishna, Kausthubham; Bhavani, Gandham S.; Shukla, Anju; Nampoothiri, Sheela; Phadkei, Shubha R.; Park, Mi Jung; Ikegawa, Shiro; Wang, Zheng; Higgs, Martin R.; Stewart, Grant S.; Jung, Eunyoung; Lee, Myeong-Sok; Park, Jong Hoon; Lee, Eun A.; Kim, Hongtae; Myung, Kyungjae; Jeon, Woosung; Lee, Kyoungyeul; Kim, Dongsup; Kim, Ok-Hwa; Choi, Murim; Lee, Han-Woong; Kim, Yonghwan; Cho, Tae-Joon
- Issue Date
- CELL PRESS
- AMERICAN JOURNAL OF HUMAN GENETICS, v.104, no.3, pp.439 - 453
- SPONASTRIME dysplasia is a rare, recessive skeletal dysplasia characterized by short stature, facial dysmorphism, and aberrant radiographic findings of the spine and long bone metaphysis. No causative genetic alterations for SPONASTRIME dysplasia have yet been determined. Using whole-exome sequencing (WES), we identified bi-allelic TONSL mutations in 10 of 13 individuals with SPONASTRIME dysplasia. TONSL is a multi-domain scaffold protein that interacts with DNA replication and repair factors and which plays critical roles in resistance to replication stress and the maintenance of genome integrity. We show here that cellular defects in dermal fibroblasts from affected individuals are complemented by the expression of wild-type TONSL. In addition, in vitro cell-based as-says and in silico analyses of TONSL structure support the pathogenicity of those TONSL variants. Intriguingly, a knock-in (KI) Tonsl mouse model leads to embryonic lethality, implying the physiological importance of TONSL. Overall, these findings indicate that genetic variants resulting in reduced function of TONSL cause SPONASTRIME dysplasia and highlight the importance of TONSL in embryonic development and postnatal growth.
- Appears in Collections:
- SLS_Journal Papers
- Files in This Item:
- There are no files associated with this item.
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.