Abstract
The importance of fatty acid (FA) metabolism in cancer is well-established, yet the mechanisms underlying metabolic reprogramming remain elusive. Here, we identify tetraspanin CD37, a prognostic marker for aggressive B-cell lymphoma, as essential membrane-localized inhibitor of FA metabolism. Deletion of CD37 on lymphoma cells results in increased FA oxidation shown by functional assays and metabolomics. Furthermore, CD37-negative lymphomas selectively deplete palmitate from serum in mouse studies. Mechanistically, CD37 inhibits the FA transporter FATP1 through molecular interaction. Consequently, deletion of CD37 induces uptake and processing of exogenous palmitate into energy and essential building blocks for proliferation, and inhibition of FATP1 reverses this phenotype. Large lipid deposits and intracellular lipid droplets are observed in CD37-negative lymphoma tissues of patients. Moreover, inhibition of carnitine palmitoyl transferase 1 A significantly compromises viability and proliferation of CD37-deficient lymphomas. Collectively, our results identify CD37 as a direct gatekeeper of the FA metabolic switch in aggressive B-cell lymphoma.
Original language | English |
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Article number | 5371 |
Pages (from-to) | 1-18 |
Journal | Nature Communications |
Volume | 13 |
Issue number | 1 |
DOIs | |
Publication status | Published - 13 Sept 2022 |
Bibliographical note
Funding Information:A.B.v.S. is supported by the Netherlands Organization for Scientific Research NWO Gravitation Programme 2013 grant (ICI 00023), ZonMW (project 09120012010023), the Dutch Cancer Society (KWF) (11618/2018 and 12949/2020), and was awarded a European Research Council Consolidator Grant (Secret Surface, 724281). C.R.B. is supported by grant ICI-00014 from the Institute for Chemical Immunology, funded by the NWO Gravitation Programme. R.S. was supported by an IMI grant (Hyporesolve) and a grant from Health Holland (Timid). N.B. and M.G. were partially supported by NWO project 184.034.019. The authors thank M. van den Brand for providing the patient DLBCL tissue samples, I. van Raaij for the Oil red O staining protocol and control samples. The authors are very grateful to Tsuyoshi Shinozuka for providing compound 5k and 12a.
Publisher Copyright:
© 2022, The Author(s).
Funding
A.B.v.S. is supported by the Netherlands Organization for Scientific Research NWO Gravitation Programme 2013 grant (ICI 00023), ZonMW (project 09120012010023), the Dutch Cancer Society (KWF) (11618/2018 and 12949/2020), and was awarded a European Research Council Consolidator Grant (Secret Surface, 724281). C.R.B. is supported by grant ICI-00014 from the Institute for Chemical Immunology, funded by the NWO Gravitation Programme. R.S. was supported by an IMI grant (Hyporesolve) and a grant from Health Holland (Timid). N.B. and M.G. were partially supported by NWO project 184.034.019. The authors thank M. van den Brand for providing the patient DLBCL tissue samples, I. van Raaij for the Oil red O staining protocol and control samples. The authors are very grateful to Tsuyoshi Shinozuka for providing compound 5k and 12a.