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Effect of MXRA7 on the Biological Functions of Acute B Lymphoblastic Leukemia Cell Line REH

Objective: To discover the relationship between matrix remodeling associated 7 (MXRA7) and acute B lymphoblastic leukemia (B-ALL), and explore the effect of MXRA7 on the biological functions of B-ALL cell line REH.

Methods: The expression of MXRA7 in blood diseases was searched and analyzed through BloodSpot database. Real-time qPCR was used to detect the expression level of MXRA7 in B-ALL cell line 697 and REH cells. Lentivirus-mediated shRNA interference technology was utilized to knock down the expression of MXRA7 in REH cells. The effects of MXRA7 on the biological functions of REH cells were studied by in vitro experiments. Cell proliferation was detected by CCK-8 assay, cell cycle was detected by PI staining, cell apoptosis was detected by Annexin V and 7-AAD staining, and the expression of apoptosis pathway related proteins was detected by Western blot.

Results: Database analysis showed that MXRA7 was highly expressed in B-ALL patients, and real-time qPCR results showed that MXRA7 was also highly expressed in cell lines 697 and REH cells. Knockdown of MXRA7 in REH cells inhibited the cell proliferation and increased the percentage of G0/G1 phase cells. After treatment with cytarabine, the apoptotic ratio was increased in MXRA7-impaired REH cells, and the activation of caspase-3 and caspase-9 were also increased.

Conclusion: Knockdown of MXRA7 can reduce the malignancy of REH cells by inhibiting the cell proliferation and increasing the sensitivity of REH cells to cytarabine. These results indicate MXRA7 may be as a novel target for the treatment of B-ALL, and the potential usefulness of MXRA7 in B-ALL deserves further investigation.

Comments：

In summary, the study found a positive correlation between the expression of MXRA7 and acute B lymphoblastic leukemia. The results of the in vitro experiments also suggest that knockdown of MXRA7 can reduce the malignancy of B-ALL cell line REH by inhibiting cell proliferation and increasing the sensitivity of REH cells to cytarabine. This suggests that MXRA7 may be a potential target for the treatment of B-ALL, and further research is needed to fully explore its usefulness in this context.

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