Short stature homeobox gene
The short stature homeobox (SHOX) gene is a gene, located on both the X and Y chromosomes, which is associated with short stature in humans if mutated or present in only one copy (haploinsufficiency).
Pathology
The gene was first found during a search for the cause of short stature in women with Turner syndrome, in which there is loss of genetic material from the X chromosome, classically by loss of one entire X chromosome.[2]
Since its discovery, the SHOX gene has been found to play a role in idiopathic short stature (short stature of unknown cause without other symptoms), Léri-Weill dyschondrosteosis, and Langer mesomelic dysplasia.
Gene dosage effects of extra copies of SHOX may be a cause of the increased stature seen in other sex chromosome aneuploidy conditions such as 47,XXX, 47,XYY, 47,XXY, 48,XXYY, etc.[3]
Function
The SHOX gene is a homeobox gene, meaning that it helps regulate development. The SHOX gene is composed of 6 different exons and is located in the pseudoautosomal region (PAR1) of the X chromosome and Y chromosome.[2] Experiments have found similar genes in a variety of animals and insects.
References
Further reading
- Bernasconi S, Mariani S, Falcinelli C, et al. (2002). "SHOX gene in Leri-Weill syndrome and in idiopathic short stature.". J. Endocrinol. Invest. 24 (9): 737–41. doi:10.1007/bf03343919. PMID 11716161.
- Leka SK, Kitsiou-Tzeli S, Kalpini-Mavrou A, Kanavakis E (2006). "Short stature and dysmorphology associated with defects in the SHOX gene.". Hormones (Athens, Greece). 5 (2): 107–18. doi:10.14310/horm.2002.11174. PMID 16807223.
- Ballabio A, Bardoni B, Carrozzo R, et al. (1990). "Contiguous gene syndromes due to deletions in the distal short arm of the human X chromosome.". Proc. Natl. Acad. Sci. U.S.A. 86 (24): 10001–5. doi:10.1073/pnas.86.24.10001. PMC 298630
. PMID 2602357.
- Zuffardi O, Maraschio P, Lo Curto F, et al. (1982). "The role of Yp in sex determination: new evidence from X/Y translocations.". Am. J. Med. Genet. 12 (2): 175–84. doi:10.1002/ajmg.1320120207. PMID 6954848.
- Kuznetzova T, Baranov A, Ivaschenko T, et al. (1995). "X;Y translocation in a girl with short stature and some features of Turner's syndrome: cytogenetic and molecular studies.". J. Med. Genet. 31 (8): 649–51. doi:10.1136/jmg.31.8.649. PMC 1050031. PMID 7815426.
- Ogata T, Yoshizawa A, Muroya K, et al. (1996). "Short stature in a girl with partial monosomy of the pseudoautosomal region distal to DXYS15: further evidence for the assignment of the critical region for a pseudoautosomal growth gene(s).". J. Med. Genet. 32 (10): 831–4. doi:10.1136/jmg.32.10.831. PMC 1051714. PMID 8558568.
- Rao E, Weiss B, Fukami M, et al. (1997). "Pseudoautosomal deletions encompassing a novel homeobox gene cause growth failure in idiopathic short stature and Turner syndrome.". Nat. Genet. 16 (1): 54–63. doi:10.1038/ng0597-54. PMID 9140395.
- Rao E, Weiss B, Fukami M, et al. (1997). "FISH-deletion mapping defines a 270-kb short stature critical interval in the pseudoautosomal region PAR1 on human sex chromosomes.". Hum. Genet. 100 (2): 236–9. doi:10.1007/s004390050497. PMID 9254856.
- Ellison JW, Wardak Z, Young MF, et al. (1997). "PHOG, a candidate gene for involvement in the short stature of Turner syndrome.". Hum. Mol. Genet. 6 (8): 1341–7. doi:10.1093/hmg/6.8.1341. PMID 9259282.
- Belin V, Cusin V, Viot G, et al. (1998). "SHOX mutations in dyschondrosteosis (Leri-Weill syndrome).". Nat. Genet. 19 (1): 67–9. doi:10.1038/ng0198-67. PMID 9590292.
- Shears DJ, Vassal HJ, Goodman FR, et al. (1998). "Mutation and deletion of the pseudoautosomal gene SHOX cause Leri-Weill dyschondrosteosis.". Nat. Genet. 19 (1): 70–3. doi:10.1038/ng0198-70. PMID 9590293.
- Grigelioniene G, Eklöf O, Ivarsson SA, et al. (2000). "Mutations in short stature homeobox containing gene (SHOX) in dyschondrosteosis but not in hypochondroplasia.". Hum. Genet. 107 (2): 145–9. doi:10.1007/s004390000352. PMID 11030412.
- Huber C, Cusin V, Le Merrer M, et al. (2001). "SHOX point mutations in dyschondrosteosis.". J. Med. Genet. 38 (5): 323. doi:10.1136/jmg.38.5.323. PMC 1734877. PMID 11403039.
- Rao E, Blaschke RJ, Marchini A, et al. (2002). "The Leri-Weill and Turner syndrome homeobox gene SHOX encodes a cell-type specific transcriptional activator.". Hum. Mol. Genet. 10 (26): 3083–91. doi:10.1093/hmg/10.26.3083. PMID 11751690.
- Ezquieta B, Cueva E, Oliver A, Gracia R (2002). "SHOX intragenic microsatellite analysis in patients with short stature.". J. Pediatr. Endocrinol. Metab. 15 (2): 139–48. doi:10.1515/jpem.2002.15.2.139. PMID 11874178.
- Ogata T, Muroya K, Sasaki G, et al. (2002). "SHOX nullizygosity and haploinsufficiency in a Japanese family: implication for the development of Turner skeletal features.". J. Clin. Endocrinol. Metab. 87 (3): 1390–4. doi:10.1210/jc.87.3.1390. PMID 11889214.
- Rappold GA, Fukami M, Niesler B, et al. (2002). "Deletions of the homeobox gene SHOX (short stature homeobox) are an important cause of growth failure in children with short stature.". J. Clin. Endocrinol. Metab. 87 (3): 1402–6. doi:10.1210/jc.87.3.1402. PMID 11889216.
- Cormier-Daire V, Huber C, Munnich A (2002). "Allelic and nonallelic heterogeneity in dyschondrosteosis (Leri-Weill syndrome).". Am. J. Med. Genet. 106 (4): 272–4. doi:10.1002/ajmg.10228. PMID 11891678.
- May CA, Shone AC, Kalaydjieva L, et al. (2002). "Crossover clustering and rapid decay of linkage disequilibrium in the Xp/Yp pseudoautosomal gene SHOX.". Nat. Genet. 31 (3): 272–5. doi:10.1038/ng918. PMID 12089524.
External links