000002153 001__ 2153 000002153 005__ 20260429142526.0 000002153 0247_ $$2DOI$$a10.6083/M4N29V6V 000002153 037__ $$aETD 000002153 245__ $$aQuantitative analysis of HOXA13 function in the developing limb 000002153 260__ $$bOregon Health and Science University 000002153 269__ $$a2006 000002153 336__ $$aDissertation 000002153 502__ $$bPh.D. 000002153 502__ $$gMolecular & Medical Genetics (sunsetting) 000002153 520__ $$aHox transcription factors are essential regulators of embryonic patterning, and loss of HOXA13 function causes severe limb malformations in humans and mice. This study demonstrates that HOXA13 directly regulates bone morphogenetic protein (BMP) signaling during autopod development. HOXA13 binds and activates novel enhancer regions of Bmp2 and Bmp7 and represses Sostdc1, a BMP antagonist, thereby promoting proper BMP signaling. Reduced BMP activity contributes to the Hoxa13 mutant limb phenotype, which can be partially rescued by exogenous BMPs. These findings provide a mechanistic link between HOXA13, BMP signaling, and limb patterning. 000002153 540__ $$fCC BY 000002153 542__ $$fIn copyright - single owner 000002153 650__ $$aHomeodomain Proteins$$030771 000002153 650__ $$aTranscription Factors$$027255 000002153 650__ $$aBody Patterning$$031667 000002153 650__ $$aBone Morphogenetic Proteins$$031660 000002153 691__ $$aSchool of Medicine$$041369 000002153 692__ $$aDepartment of Molecular Microbiology and Immunology$$041429 000002153 7001_ $$aKnosp, Wendy$$uOregon Health and Science University$$041354 000002153 7201_ $$aStadler, H. Scott$$uOregon Health and Science University$$041354$$7Personal$$eMentor 000002153 8564_ $$91a5cbe1b-d084-4414-bbe4-39a702a7f6b6$$s3746392$$uhttps://digitalcollections.ohsu.edu/record/2153/files/2882_etd.pdf$$ePublic$$20717808d12d319b85b13e093b25fbe9f$$31 000002153 901__ $$a<p>These documents are archival records. They are retained for historical reference only. </p><p><b>Need an accessible version? Use the ‘Get Accessible Copy’ link above.</b></p> 000002153 905__ $$a/rest/prod/sj/13/92/13/sj139213f 000002153 909CO $$ooai:digitalcollections.ohsu.edu:2153$$pstudent-work 000002153 956__ $$aGet Accessible Copy$$uhttps://ohsu.libwizard.com/f/requestaccessibledocument 000002153 980__ $$aTheses and Dissertations