Ssb1 and Ssb2 cooperate to regulate mouse hematopoietic stem and progenitor cells by resolving replicative stress

Journal article

Shi, Wei, Vu, Therese, Boucher, Didier, Biernacka, Anna, Nde, Jules, Pandita, Raj K., Straube, Jasmin, Boyle, Glen M., Al-Ejeh, Fares, Nag, Purba, Jeffery, Jessie, Harris, Janelle L., Bain, Amanda L., Grzelak, Marta, Skrzypczak, Magdalena, Mitra, Abhishek, Dojer, Norbert, Crosetto, Nicola, Cloonan, Nicole, ... Khanna, Kum Kum. (2017). Ssb1 and Ssb2 cooperate to regulate mouse hematopoietic stem and progenitor cells by resolving replicative stress. Blood. 129(18), pp. 2479 - 2492. https://doi.org/10.1182/blood-2016-06-725093
AuthorsShi, Wei, Vu, Therese, Boucher, Didier, Biernacka, Anna, Nde, Jules, Pandita, Raj K., Straube, Jasmin, Boyle, Glen M., Al-Ejeh, Fares, Nag, Purba, Jeffery, Jessie, Harris, Janelle L., Bain, Amanda L., Grzelak, Marta, Skrzypczak, Magdalena, Mitra, Abhishek, Dojer, Norbert, Crosetto, Nicola, Cloonan, Nicole, Becherel, Olivier J., Finnie, John, Skaar, Jeffrey R., Walkley, Carl, Pandita, Tej K., Rowicka, Maga, Ginalski, Krzysztof, Lane, Steven W. and Khanna, Kum Kum
Abstract

Hematopoietic stem and progenitor cells (HSPCs) are vulnerable to endogenous damage and defects in DNA repair can limit their function. The 2 single-stranded DNA (ssDNA) binding proteins SSB1 and SSB2 are crucial regulators of the DNA damage response; however, their overlapping roles during normal physiology are incompletely understood. We generated mice in which both Ssb1 and Ssb2 were constitutively or conditionally deleted. Constitutive Ssb1/Ssb2 double knockout (DKO) caused early embryonic lethality, whereas conditional Ssb1/Ssb2 double knockout (cDKO) in adult mice resulted in acute lethality due to bone marrow failure and intestinal atrophy featuring stem and progenitor cell depletion, a phenotype unexpected from the previously reported single knockout models of Ssb1 or Ssb2. Mechanistically, cDKO HSPCs showed altered replication fork dynamics, massive accumulation of DNA damage, genome-wide double-strand breaks enriched at Ssb-binding regions and CpG islands, together with the accumulation of R-loops and cytosolic ssDNA. Transcriptional profiling of cDKO HSPCs revealed the activation of p53 and interferon (IFN) pathways, which enforced cell cycling in quiescent HSPCs, resulting in their apoptotic death. The rapid cell death phenotype was reproducible in in vitro cultured cDKO-hematopoietic stem cells, which were significantly rescued by nucleotide supplementation or after depletion of p53. Collectively, Ssb1 and Ssb2 control crucial aspects of HSPC function, including proliferation and survival in vivo by resolving replicative stress to maintain genomic stability.

Year2017
JournalBlood
Journal citation129 (18), pp. 2479 - 2492
PublisherAmerican Society of Hematology
ISSN0006-4971
Digital Object Identifier (DOI)https://doi.org/10.1182/blood-2016-06-725093
Scopus EID2-s2.0-85018891003
Page range2479 - 2492
Research GroupMary MacKillop Institute for Health Research
Publisher's version
File Access Level
Controlled
Place of publicationUnited States of America
EditorsB. Löwenberg
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Ho, P. W. M., Goradia, A., Russell, M. R., Chalk, Alistair M., Milley, K. M., Baker, E. K., Danks, J. A., Slavin, John, Walia, Mannu K., Crimeen-Irwin, B., Dickins, R. A., Martin, T. John and Walkley, Carl. (2015). Knockdown of PTHR1 in osteosarcoma cells decreases invasion and growth and increases tumor differentiation in vivo. Oncogene. 34(22), pp. 2922 - 2933. https://doi.org/10.1038/onc.2014.217
RARγ is a negative regulator of osteoclastogenesis
Green, Alanna C., Poulton, Ingrid J., Vrahnas, Christina, Häusler, Karl D., Walkley, Carl, Wu, Joy Y., Martin, T. John, Gillespie, Matthew T., Chandraratna, Roshantha A. S., Quinn, Julian M. W., Sims, Natalie A. and Purton, L. E.. (2015). RARγ is a negative regulator of osteoclastogenesis. The Journal of Steroid Biochemistry and Molecular Biology. 150, pp. 46 - 53. https://doi.org/10.1016/j.jsbmb.2015.03.005
Brief report: The differential roles of mTORC1 and mTORC2 in mesenchymal stem cell differentiation
Martin, Sally K., Fitter, Stephen, Dutta, Ankit K., Matthews, Mary P., Walkley, Carl, Hall, Michael N., Ruegg, Markus A., Gronthos, Stan and Zannettino, Andrew C. W.. (2015). Brief report: The differential roles of mTORC1 and mTORC2 in mesenchymal stem cell differentiation. Stem Cells. 33(4), pp. 1359 - 1365. https://doi.org/10.1002/stem.1931
Ciliary neurotrophic factor has intrinsic and extrinsic roles in regulating B cell differentiation and bone structure
Askmyr, Maria, White, Kirby E., Jovic, Tanja, King, Hannah A., Quach, Julie M., Maluenda, Ana C., Baker, E. K., Smeets, Monique F., Walkley, Carl and Purton, L. E.. (2015). Ciliary neurotrophic factor has intrinsic and extrinsic roles in regulating B cell differentiation and bone structure. Scientific Reports. 5, pp. 1 - 13. https://doi.org/10.1038/srep15529
PTHrP, its receptor, and protein kinase A activation in osteosarcoma
Walkley, Carl, Walia, Mannu K., Ho, P.W.M. and Martin, T. J.. (2014). PTHrP, its receptor, and protein kinase A activation in osteosarcoma. Molecular & Cellular Oncology. 1(4), pp. 1 - 3. https://doi.org/10.4161/23723548.2014.965624
Gene expression profiling to define the cell intrinsic role of the SKI proto-oncogene in hematopoiesis and myeloid neoplsms
Chalk, Alistair M., Liddicoat, Brian J., Walkley, Carl and Singbrant, Sofie. (2014). Gene expression profiling to define the cell intrinsic role of the SKI proto-oncogene in hematopoiesis and myeloid neoplsms. Genomics Data. 2, pp. 189 - 191. https://doi.org/10.1016/j.gdata.2014.06.022
The SKI proto-oncogene enhances the in vivo repopulation of hematopoietic stem cells and causes myeloproliferative disease
Singbrant, Sofie, Wall, Meaghan, Moody, Jennifer, Karlsson, Göran, Chalk, Alistair M., Liddicoat, Brian J., Russell, Megan R., Walkley, Carl R. and Karlsson, Stefan. (2014). The SKI proto-oncogene enhances the in vivo repopulation of hematopoietic stem cells and causes myeloproliferative disease. Haematologica. 99(4), pp. 647 - 655. https://doi.org/10.3324/haematol.2013.093971
The Rothmund-Thomson syndrome helicase RECQL4 is essential for hematopoiesis
Smeets, Monique F., DeLuca, Elisabetta, Wall, Meaghan, Quach, Julie M., Chalk, Alistair M., Deans, Andrew J., Heierhorst, Jörg, Purton, Louise E., Izon, David J. and Walkley, Carl R.. (2014). The Rothmund-Thomson syndrome helicase RECQL4 is essential for hematopoiesis. Journal of Clinical Investigation. 124(8), pp. 3551 - 3565. https://doi.org/10.1172/JCI75334
Cells of origin in osteosarcoma: Mesenchymal stem cells or osteoblast committed cells?
Mutsaers, Anthony J. and Walkley, Carl R.. (2014). Cells of origin in osteosarcoma: Mesenchymal stem cells or osteoblast committed cells? Bone. 62, pp. 56 - 63. https://doi.org/10.1016/j.bone.2014.02.003
Immune response to rb1-regulated senescence limits radiation-Induced osteosarcoma formation
Kansara, Maya, Leong, Huei San, Lin, Dan Mei, Popkiss, Sophie, Pang, Puiyi, Garsed, Dale W., Walkley, Carl R., Cullinane, Carleen, Ellul, Jason, Haynes, Nicole M., Hicks, Rod, Kuijjer, Marieke L., Cleton-Jansen, Anne-Marie, Hinds, Philip W., Smyth, Mark J. and Thomas, David M.. (2013). Immune response to rb1-regulated senescence limits radiation-Induced osteosarcoma formation. Journal of Clinical Investigation. 123(12), pp. 5351 - 5360. https://doi.org/10.1172/JCI70559
Erythroid-extrinsic regulation of normal erythropoiesis by retinoic acid receptors
Dewamitta, Sita R., Joseph, Chacko, Purton, Louise E. and Walkley, Carl R.. (2013). Erythroid-extrinsic regulation of normal erythropoiesis by retinoic acid receptors. British Journal of Haematology. 164(2), pp. 280 - 285. https://doi.org/10.1111/bjh.12578
Modeling distinct osteosarcoma subtypes in vivo using Cre: Lox and lineage-restricted transgenic shRNA
Mutsaers, Anthony J., Ng, Alvin J. M., Baker, Emma K., Russell, Megan R., Chalk, Alistair M., Wall, Meaghan, Liddicoat, Brian J. J., Ho, Patricia W. M., Slavin, John L., Goradia, Ankita, Martin, T. John, Purton, Louise E., Dickins, Ross A. and Walkley, Carl R.. (2013). Modeling distinct osteosarcoma subtypes in vivo using Cre: Lox and lineage-restricted transgenic shRNA. Bone. 55(1), pp. 166 - 178. https://doi.org/10.1016/j.bone.2013.02.016
Darbepoietin-alfa has comparable erythropoietic stimulatory effects to recombinant erythropoietin whilst preserving the bone marrow microenvironment
Dewamitta, Sita R., Russell, Megan R., Nandurkar, Harshal and Walkley, Carl R.. (2013). Darbepoietin-alfa has comparable erythropoietic stimulatory effects to recombinant erythropoietin whilst preserving the bone marrow microenvironment. Haematologica. 98(5), pp. 686 - 690. https://doi.org/10.3324/haematol.2012.078709
Deciphering hematopoietic stem cells in their niches: A critical appraisal of genetic models, lineage tracing, and imaging strategies
Joseph, Chacko, Quach, Julie M., Walkley, Carl R., Lane, Steven W., Celso, Cristina Lo and Purton, Louise E.. (2013). Deciphering hematopoietic stem cells in their niches: A critical appraisal of genetic models, lineage tracing, and imaging strategies. Cell Stem Cell. 13(5), pp. 520 - 533. https://doi.org/10.1016/j.stem.2013.10.010
The zinc-finger protein ASCIZ regulates B cell development via DYNLL1 and Bim
Jurado, Sabine, Gleeson, Kimberly, O’Donnell, Kristy, Izon, David J., Walkley, Carl R., Strasser, Andreas, Tarlinton, David M. and Heierhorst, Jörg. (2012). The zinc-finger protein ASCIZ regulates B cell development via DYNLL1 and Bim. Journal of Experimental Medicine. 209(9), pp. 1629-1639. https://doi.org/10.1084/jem.20120785
Fak depletion in both hematopoietic and nonhematopoietic niche cells leads to hematopoietic stem cell expansion
Lu, Jiayun, Sun, Yan, Nombela-Arrieta, Cesar, Du, Karrie P., Park, Shin-Young, Chai, Li, Walkley, Carl, Luo, Hongbo R. and Silberstein, Leslie E.. (2012). Fak depletion in both hematopoietic and nonhematopoietic niche cells leads to hematopoietic stem cell expansion. Experimental Hematology. 40(4), pp. 307-317. https://doi.org/10.1016/j.exphem.2011.11.010
Erythropoietin couples erythropoiesis, B-lymphopoiesis, and bone homeostasis within the bone marrow microenvironment
Singbrant, Sofie, Russell, Megan R., Jovic, Tanja, Liddicoat, Brian, Izon, David J., Purton, Louise E., Sims, Natalie A., Martin, T. John, Sankaran, Vijay G. and Walkley, Carl R.. (2011). Erythropoietin couples erythropoiesis, B-lymphopoiesis, and bone homeostasis within the bone marrow microenvironment. Blood. 117(21), pp. 5631-5642. https://doi.org/10.1182/blood-2010-11-320564
Erythropoiesis, anemia and the bone marrow microenvironment
Walkley, Carl R.. (2011). Erythropoiesis, anemia and the bone marrow microenvironment. International Journal of Hematology. 93, pp. 10-13. https://doi.org/10.1007/s12185-010-0759-6
Defining the hematopoietic stem cell niche : The chicken and the egg conundrum
Singbrant, Sofie, Askmyr, Maria, Purton, Louise E. and Walkley, Carl R.. (2011). Defining the hematopoietic stem cell niche : The chicken and the egg conundrum. Journal of Cellular Biochemistry. 112(6), pp. 1486-1490. https://doi.org/10.1002/jcb.23085
Hematopoietic AMPK beta1 reduces mouse adipose tissue macrophage inflammation and insulin resistance in obesity
Galic, Sandra, Fullerton, Morgan, Schertzer, Jonathan, Sikkema, Sarah, Marcinko, Katarina, Walkley, Carl, Izon, David, Honeyman, Jane, Chen, Zhi-Ping, Van Denderen, Bryce, Kemp, Bruce and Steinberg, Gregory. (2011). Hematopoietic AMPK beta1 reduces mouse adipose tissue macrophage inflammation and insulin resistance in obesity. Journal of Clinical Investigation. 121(12), pp. 4903 - 4915. https://doi.org/10.1172/JCI58577
Hematopoietic AMPK Beta ß1 reduces mouse adipose tissue macrophage inflammation and insulin resistance in obesity
Galic, Sandra, Fullerton, Morgan D., Schertzer, Jonathan D., Sikkema, Sarah, Marcinko, Katarina, Walkley, Carl R., Izon, David, Honeyman, Jane, Chen, Zhi-Ping, van Denderen, Bryce J., Kemp, Bruce Ernest and Steinberg, Gregory R.. (2011). Hematopoietic AMPK Beta ß1 reduces mouse adipose tissue macrophage inflammation and insulin resistance in obesity. Journal of Clinical Investigation. 121(12), pp. 4903 - 4915. https://doi.org/10.1172/JCI58577