1
|
Padden-Modi M, Cheng J, Kirby R, Twyman N, Aslam S, Bulusu V, Gilligan D, Martin A, Pipalia N, Shiarli A, Yang H, Thippu Jayaprakash K. PD-0670 Minimising radical radiotherapy commencement time for lung cancer to improve clinical outcomes. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02917-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
2
|
Cruz DL, Pipalia N, Mao S, Gadi D, Liu G, Grigalunas M, O'Neill M, Quinn TR, Kipper A, Ekebergh A, Dimmling A, Gartner C, Melancon BJ, Wagner FF, Holson E, Helquist P, Wiest O, Maxfield FR. Inhibition of Histone Deacetylases 1, 2, and 3 Enhances Clearance of Cholesterol Accumulation in Niemann-Pick C1 Fibroblasts. ACS Pharmacol Transl Sci 2021; 4:1136-1148. [PMID: 34151204 PMCID: PMC8204796 DOI: 10.1021/acsptsci.1c00033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Indexed: 11/29/2022]
Abstract
![]()
Niemann-Pick disease type C1 (NPC1) is a rare genetic cholesterol storage disorder
caused by mutations in the NPC1 gene. Mutations in this transmembrane
late endosome protein lead to loss of normal cholesterol efflux from late endosomes and
lysosomes. It has been shown that broad spectrum histone deacetylase inhibitors
(HDACi's) such as Vorinostat correct the cholesterol accumulation phenotype in the
majority of NPC1 mutants tested in cultured cells. In order to determine the optimal
specificity for HDACi correction of the mutant NPC1s, we screened 76 HDACi's of varying
specificity. We tested the ability of these HDACi's to correct the excess accumulation
of cholesterol in patient fibroblast cells that homozygously express
NPC1I1061T, the most common mutation. We
determined that inhibition of HDACs 1, 2, and 3 is important for correcting the defect,
and combined inhibition of all three is needed to achieve the greatest effect,
suggesting a need for multiple effects of the HDACi treatments. Identifying the specific
HDACs involved in the process of regulating cholesterol trafficking in NPC1 will help to
focus the search for more specific druggable targets.
Collapse
Affiliation(s)
- Dana L Cruz
- Department of Biochemistry, Weill Cornell Medical College, New York, New York 10065, United States
| | - Nina Pipalia
- Department of Biochemistry, Weill Cornell Medical College, New York, New York 10065, United States
| | - Shu Mao
- Department of Biochemistry, Weill Cornell Medical College, New York, New York 10065, United States
| | - Deepti Gadi
- Department of Biochemistry, Weill Cornell Medical College, New York, New York 10065, United States
| | - Gang Liu
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Michael Grigalunas
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Matthew O'Neill
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Taylor R Quinn
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Andi Kipper
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Andreas Ekebergh
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Alexander Dimmling
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Carlos Gartner
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Bruce J Melancon
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Florence F Wagner
- Eli and Edythe L. Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Edward Holson
- Eli and Edythe L. Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States.,KDAc Therapeutics, Cambridge, Massachusetts 02142, United States
| | - Paul Helquist
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Olaf Wiest
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States.,Laboratory of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University, Shenzhen Graduate School, Shenzhen 518055, P.R. China
| | - Frederick R Maxfield
- Department of Biochemistry, Weill Cornell Medical College, New York, New York 10065, United States
| |
Collapse
|
4
|
Jena P, Roxbury D, Galassi TV, Akkari L, Horoszko CP, Iaea DB, Budhathoki-Uprety J, Pipalia N, Haka AS, Harvey JD, Mittal J, Maxfield FR, Joyce JA, Heller DA. A Carbon Nanotube Optical Reporter Maps Endolysosomal Lipid Flux. ACS Nano 2017; 11:10689-10703. [PMID: 28898055 PMCID: PMC5707631 DOI: 10.1021/acsnano.7b04743] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 08/31/2017] [Indexed: 05/18/2023]
Abstract
Lipid accumulation within the lumen of endolysosomal vesicles is observed in various pathologies including atherosclerosis, liver disease, neurological disorders, lysosomal storage disorders, and cancer. Current methods cannot measure lipid flux specifically within the lysosomal lumen of live cells. We developed an optical reporter, composed of a photoluminescent carbon nanotube of a single chirality, that responds to lipid accumulation via modulation of the nanotube's optical band gap. The engineered nanomaterial, composed of short, single-stranded DNA and a single nanotube chirality, localizes exclusively to the lumen of endolysosomal organelles without adversely affecting cell viability or proliferation or organelle morphology, integrity, or function. The emission wavelength of the reporter can be spatially resolved from within the endolysosomal lumen to generate quantitative maps of lipid content in live cells. Endolysosomal lipid accumulation in cell lines, an example of drug-induced phospholipidosis, was observed for multiple drugs in macrophages, and measurements of patient-derived Niemann-Pick type C fibroblasts identified lipid accumulation and phenotypic reversal of this lysosomal storage disease. Single-cell measurements using the reporter discerned subcellular differences in equilibrium lipid content, illuminating significant intracellular heterogeneity among endolysosomal organelles of differentiating bone-marrow-derived monocytes. Single-cell kinetics of lipoprotein-derived cholesterol accumulation within macrophages revealed rates that differed among cells by an order of magnitude. This carbon nanotube optical reporter of endolysosomal lipid content in live cells confers additional capabilities for drug development processes and the investigation of lipid-linked diseases.
Collapse
Affiliation(s)
- Prakrit
V. Jena
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
| | - Daniel Roxbury
- Department
of Chemical Engineering, University of Rhode
Island, Kingston, Rhode Island 02881, United States
| | - Thomas V. Galassi
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Weill
Cornell Medicine, New York, New York 10065, United States
| | - Leila Akkari
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Division
of Tumor Biology & Immunology, The Netherlands
Cancer Institute, Amsterdam 1066 CX, The Netherlands
| | - Christopher P. Horoszko
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Weill
Cornell Medicine, New York, New York 10065, United States
| | - David B. Iaea
- Weill
Cornell Medicine, New York, New York 10065, United States
| | | | - Nina Pipalia
- Weill
Cornell Medicine, New York, New York 10065, United States
| | - Abigail S. Haka
- Weill
Cornell Medicine, New York, New York 10065, United States
| | - Jackson D. Harvey
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Weill
Cornell Medicine, New York, New York 10065, United States
| | - Jeetain Mittal
- Department
of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | | | - Johanna A. Joyce
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Weill
Cornell Medicine, New York, New York 10065, United States
- Ludwig Center
for Cancer Research, University of Lausanne, Lausanne CH 1066, Switzerland
| | - Daniel A. Heller
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Weill
Cornell Medicine, New York, New York 10065, United States
| |
Collapse
|