PDI inhibitor LTI6426 enhances panobinostat efficacy in preclinical models of multiple myeloma.
PDI inhibitor LTI6426 enhances panobinostat efficacy in preclinical models of multiple myeloma.
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DOI:
10.1007/s00280-022-04425-3
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发表时间:
2022-05
影响因子:
3
通讯作者:
Dolloff, Nathan G.
中科院分区:
文献类型:
--
作者:
Robinson, Reeder M.;Basar, Ashton P.;Reyes, Leticia;Duncan, Ravyn M.;Li, Hong;Dolloff, Nathan G.
The histone deacetylase inhibitor (HDACi), panobinostat (Pano), is approved by the United States Food and Drug Administration (FDA) and European Medicines Agency (EMA) for treatment of relapsed/refractory multiple myeloma (MM). Despite regulatory approvals, Pano is used on a limited basis in MM due largely to an unfavorable toxicity profile. The MM treatment landscape continues to evolve, and for Pano to maintain a place in that paradigm it will be necessary to identify treatment regimens that optimize its effectiveness, particularly those that permit dose reductions to eliminate unwanted toxicity. Here, we propose such a regimen by combining Pano with LTI6426, a first-in-class orally bioavailable protein disulfide isomerase (PDI) inhibitor. We show that LTI6426 dramatically enhances the anti-MM activity of Pano in vitro and in vivo using a proteasome inhibitor resistant mouse model of MM and a low dose of Pano that exhibited no signs of toxicity. We go on to characterize a transcriptional program that is induced by the LTI6426/Pano combination, demonstrating a convergence of the two drugs on endoplasmic reticulum (ER) stress pathway effectors ATF3 (Activating Transcription Factor 3), DDIT3/CHOP (DNA Damage Inducible Transcript 3, a.k.a. C/EBP Homologous Protein), and DNAJB1 (DnaJ homolog subfamily B member 1, a.k.a. HSP40). We conclude that LTI6426 may safely enhance low-dose Pano regimens and that ATF3, DDIT3/CHOP, and DNAJB1 are candidate pharmacodynamic biomarkers of response to this novel treatment regimen.
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DOI:
10.3233/jhd-160226
发表时间:
2016-12-15
期刊:
Journal of Huntington's disease
影响因子:
--
作者:
Chopra V;Quinti L;Khanna P;Paganetti P;Kuhn R;Young AB;Kazantsev AG;Hersch S
通讯作者:
Hersch S
影响因子:
12.8
作者:
Dimopoulos, K.;Gimsing, P.;Gronbaek, K.
通讯作者:
Gronbaek, K.
影响因子:
2.9
作者:
Mu S;Kuroda Y;Shibayama H;Hino M;Tajima T;Corrado C;Lin R;Waldron E;Binlich F;Suzuki K
通讯作者:
Suzuki K
影响因子:
2.6
作者:
Braunlin, Megan;Belani, Rajesh;Kim, Christopher
通讯作者:
Kim, Christopher
影响因子:
12.8
作者:
Kaufman, Jonathan L.;Mina, Roberto;Lonial, Sagar
通讯作者:
Lonial, Sagar