What question did this study set out to answer?

To identify microRNA expression signatures in multiple myeloma and determine the role of microRNA-15a and -16 in regulating tumor cell proliferation within the bone marrow microenvironment.

April 29, 2009BloodOpen Access

MicroRNAs 15a and 16 regulate tumor proliferation in multiple myeloma

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Authors

ARAldo M. RoccaroAzienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia ASAntonio SaccoAzienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia BTBrian ThompsonLiberal Arts University

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Implication

Preclinical study demonstrates that microRNA-15a and -16 inhibit tumor proliferation in multiple myeloma, indicating their potential as targets for novel therapies.

Key Points

To identify microRNA expression signatures in multiple myeloma and determine the role of microRNA-15a and -16 in regulating tumor cell proliferation within the bone marrow microenvironment.
Performed microRNA expression profiling on bone marrow-derived CD138(+) multiple myeloma cells compared with normal counterparts, validating expression profiles via qRT-PCR.
Investigated the functional effects of microRNA-15a and -16 on myeloma cell proliferation and downstream signaling targets in vitro and in vivo within the bone marrow milieu.
Identified a disease-specific microRNA signature defined by significant down-expression of microRNA-15a/-16 and overexpression of microRNA-222/-221/-382/-181a/-181b (P < .01).
Demonstrated that microRNA-15a and -16 suppress multiple myeloma proliferation and growth in vitro and in vivo by inhibiting AKT3, ribosomal-protein-S6, MAP-kinases, and MAP3KIP3.

Cite This Study

Roccaro et al. (2009) studied this question.

synapsesocial.com/papers/6a0da59cfb8c7be8ffba77d3 https://doi.org/10.1182/blood-2009-01-198408

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Implication

Preclinical study demonstrates that microRNA-15a and -16 inhibit tumor proliferation in multiple myeloma, indicating their potential as targets for novel therapies.

MicroRNAs 15a and 16 regulate tumor proliferation in multiple myeloma

Discussion

Member takes

Implication

Key Points

Cite This Study

MicroRNAs 15a and 16 regulate tumor proliferation in multiple myeloma

Discussion

Member takes

Implication

Key Points

Cite This Study

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