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. 2022 Mar 16;23(6):3192. doi: 10.3390/ijms23063192

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Transcriptional regulation of IRX3 and IRX5. (A) RQ-PCR analysis of HOXA10 in AML cell lines (left). Transcript levels are indicated in relation to OCI-AML3, and IRX3/IRX5-positive cell lines are indicated in red. RQ-PCR analysis of OCI-AML3 (above) and MEGAL (below) showed downregulation of IRX3 and IRX5 after siRNA-mediated knockdown of HOXA10 (right). (B) RQ-PCR analysis of BMP2 in AML cell lines (left). Transcript levels are indicated in relation to OCI-AML3. ELISA results for BMP2 protein levels in AML cell line supernatants are inserted. RQ-PCR analysis of OCI-AML3 treated with BMP2 resulted in the upregulation of IRX3 and IRX5 (right). (C) RQ-PCR analysis of OCI-AML3 after siRNA-mediated knockdown of JUNB (left) and SMAD4 (right) showed downregulation of IRX3 and IRX5. (D) RQ-PCR analysis of JUNB in AML cell lines (left). Transcript levels are indicated in relation to OCI-AML3. RQ-PCR analysis of OCI-AML3 treated with inhibitory BMP2-antibody resulted in downregulation of JUNB, IRX3, and IRX5, while HOXA10 was not significantly affected (right). p-values are indicated by asterisks (* p < 0.05, ** p < 0.01, *** p < 0.001, n.s. not significant).