Haploinsufficiency of the essential gene Rps12 causes defects in erythropoiesis and hematopoietic stem cell maintenance

  1. Virginia Folgado-Marco
  2. Kristina Ames
  3. Jacky Chuen
  4. Kira Gritsman  Is a corresponding author
  5. Nicholas E Baker  Is a corresponding author
  1. Department of Genetics, Albert Einstein College of Medicine, United States
  2. Department of Medical Oncology, Albert Einstein College of Medicine, United States
  3. Department of Cell Biology, Albert Einstein College of Medicine, United States
8 figures, 1 table and 2 additional files

Figures

Figure 1 with 1 supplement
Loss of one copy of Rps12 results in delayed growth, morphologic defects, and reduced viability.

(A) Conditional Rps12flox transgenic knock-in has two loxP sites flanking exons 2 and 3, that are removed by Cre-ERT recombinase activity to generate Rps12KO. (B) Post-natal growth curve of Rps12KO/+ and Rps12+/+ littermates (+/+ n=8 and KO/+ n=11 pups). (C) Picture of 5-day-old Rps12KO/+ and Rps12+/+ littermates. (D) Representative picture of ’kinked’ tail in Rps12KO/+ mouse. (E) Representative picture of the anterior footpad hyperpigmentation in Rps12KO/+. (F) Quantification of the percentage of mice presenting hydrocephalus per litter (n=27 litters, two-way ANOVA p=0.0035). (G) Kaplan-Meier survival curves of Rps12KO/+ and Rps12+/+ littermates starting at day 5 of age (+/+ n=39 and KO/+ n=60, log-rank Mantel-Cox test p=0.012). (H) Embryo genotype segregation from crosses between Rps12KO/+ male and female. Graph represents the percentage of developed embryos and the table shows the total numbers (E%=expected percentages, E#=expected numbers, O=observed numbers). (I) Representative pictures of E13.5 embryos with their placentas. (J) E13.5 embryo weights (n=10 on each genotype, unpaired t-test p=0.0420). Statistical analysis: quantifications represent mean +/− SEM, shown as the error bars.

Figure 1—figure supplement 1
CRISPR gene editing and genotyping strategy for the generation of Rps12flox and Rps12KO.

(A) Diagram of the WT, Flox, and KO alleles of Rps12 generated in this study indicating the position of Snord100 and Snora33 (snoRNA),Cas9 gRNAs target locations, and primers used for genotyping. The homology arms starting sites are indicated and the ends fall outside of the Rps12 locus. To identify the first transformants, two pair of primers were used for PCR amplification: F2/R2 and F3/R3. F2 and R3 fall outside of the sequence covered by the homology arms, to ensure the inserts are on the correct location. The presence of LoxP sites was confirmed by Sanger sequencing using primers F1 and F4 for F2/R2 fragments, and with F3 and R3 for F3/R3 fragments. To determine excision of exons 2 and 3 by Cre-ERT recombination primers F1 and R1 were used, which generate a 900 bp fragment in Rps12+ and a 300 bp fragment in RpS12KO (B).

Figure 1—figure supplement 1—source data 1

Blot for Figure 1—figure supplement 1B.

The complete blot from which Figure 1—figure supplement 1B was derived is shown on the left. The 900 bp and 300 bp bands are marked on the right, as is the portion cropped for Figure 1—figure supplement 1B.

https://cdn.elifesciences.org/articles/69322/elife-69322-fig1-figsupp1-data1-v2.zip
Haploinsufficiency of Rps12 results in erythropoiesis defects that worsen with age.

(A) Quantification of peripheral blood counts from young (6–8 weeks) littermates (+/+ n=10 and KO/+ n=13) (WBC=white blood cells, RBC=red blood cell, MCV=mean corpuscular volume). (B) Representative flow cytometry gating of bone marrow cells from 6- to 8-weeks-old mice of erythropoietic populations using Ter119 and CD71 markers. (C, D, E, F) Frequencies of erythroid progenitors in the bone marrow and spleen of young (6- to 7-weeks-old, +/+ n=4 and KO/+ n=4) and older (6- to 7-months-old, +/+ n=5 and KO/+ n=5) mice. (G) Total number of CFU-E and BFU-E colonies per plate (5 x 105 bone marrow (BM) cells plated) in methylcellulose media supplemented with EPO (M3434) from young mice (6- to 7-weeks-old, +/+ n=4 and KO/+ n=4, each biological sample had two replicates) and older mice (6- to 7-months-old, +/+ n=4, and KO/+ n=4, each biological sample had two replicates). Statistical analysis: quantifications represent mean +/− SEM, shown as the error bars, when only two groups were being compared, unpaired t-test was performed, and for multiple comparisons one-way ANOVA analysis was used. *p<0.05, **p<0.01, ***p<0.001, ****p<0.0001.

Figure 3 with 2 supplements
Reduced hematopoietic stem cells (HSCs) and other hematopoietic progenitor numbers in Rps12KO/+ mice.

(A) Representative gating strategy used to identify bone marrow populations of LSKs: long-term HSC (LT- HSC), short-term HSC (ST-HSC), multi-potent progenitors (MPP2, MPP3, MPP4), and myeloid progenitors (MPROG): common myeloid progenitor (CMP), granulocyte-monocyte progenitor (GMP), megakaryocyte-erythrocyte (MEP), and common lymphoid progenitor (CLP). (B) Total LT-HSCs and ST-HSCs per femur of young mice (6- to 8-weeks-old littermates, +/+ n=4, and KO/+ n=3). (C) Total number of cells per femur of indicated hematopoietic progenitor populations in young mice (6- to 8-weeks-old littermates, +/+ n=4, and KO/+ n=3). (D) Bone marrow cellularity is represented as cells per femur ×106 from young mice (6- to 7-weeks-old littermates, +/+ n=10, and KO/+ n=10). (E) Spleen weights of young (6- to 7-weeks-old, +/+ n=10, and KO/+ n=10) mice. (F) Total HSCs per femur of older mice (6- to 7-month-old, +/+ n=3, and KO/+ n=4). (G) Total number of cells per femur of indicated hematopoietic progenitor populations in older mice (6- to 7-month-old, +/+ n=3, and KO+ n=4). (H) Bone marrow cellularity is represented as cells per femur ×106 from older mice (older: 6- to 7-months-old, +/+ n=3, and KO/+ n=9). (I) Spleen weights of older (6- to 7-months-old, +/+ n=8, and KO/+ n=14) mice. (J) Quantification of peripheral blood counts from older mice (6- to 7 months old, +/+ n=8, and KO/+ n=11). (K) Total number of colonies per plate (1 × 104 bone marrow (BM) cells from 6- to 7-month-old mice plated in round 1 and 1 × 104 cells plated from the previous plate on each re-plating round) on each round of re-plating in complete methylcellulose media (+/+ n=5 and KO/+ n=5, 2 replicates per biological sample). Statistical analysis: quantifications represent mean +/− SEM, shown as the error bars, unpaired t-tests were performed to establish significance among populations between genotypes *p<0.05, **p<0.01, ***p<0.001, ****p<0.0001.

Figure 3—figure supplement 1
Heterozygous loss of Rps12 in the hematopoietic cells.

(A, B) Photomicrographs of H&E-stained sections of the bone marrow from a wild-type (WT) and Rps12KO/+ at (A) 8 weeks and (B) 6-month-old animals. Images are taken at 20 x magnification. (C, D) Frequency of the LT-HSCs, ST-HSCs, and progenitor populations (C) in young mice (6–8 weeks old littermates, +/+ n=4, and KO/+ n=3) and in (D) older mice (6- to 7-month-old, +/+ n=3, and KO/+ n=4). Statistical analysis: quantifications represent mean +/− SEM, shown as the error bars. Significance was determined using the Welch’s t-test ns ≥0.05, *p<0.05, **p<0.01, ***p<0.001, ****p<0.0001.

Figure 3—figure supplement 1—source data 1

Frequency of hematopoietic progenitors.

https://cdn.elifesciences.org/articles/69322/elife-69322-fig3-figsupp1-data1-v2.xlsx
Figure 3—figure supplement 2
Decreased Rps12 and unaffected snoRNA expression levels in Rps12KO/+ mice.

(A) Comparison of total Rps12 mRNA levels measured by qPCR in cKit +bone marrow cells normalized to housekeeping genes GAPDH, RER1, and HPRT1, between Rps12+/+ and Rps12KO/+ mice. (B) Comparison of total Snord100 and Snora33 small RNAs levels measured by qPCR normalized to housekeeping small RNAs U6, Sno22, and Sno234. (C) Quantification by western blot of the relative levels of Rps12 protein in cKit + bone marrow cells normalized to housekeeping gene ACTB between Rps12+/+ and Rps12KO/+ mice. (D) Comparison on the 28 S and 18 S ribosomal subunits ratio between Rps12+/+ and Rps12KO/+ mice provided by RNA analysis in Agilent 2100 Bioanalyzer (D’) Representative RNA profiles from Rps12+/+ and Rps12KO/+ mice ckit + bone marrow samples. (A, B, C, D) Biological samples are +/+ n=4 and KO/+ n=4. Statistical analysis: quantifications represent mean +/− SEM,shown as the error bars, unpaired t-tests were performed to establish significance among populations between genotypes *p<0.05, **p<0.01, ***p<0.001, ****p<0.0001.

Figure 3—figure supplement 2—source data 1

Blots of cKit + bone marrow cells.

(A) Complete blot corresponding to Figure 3—figure supplement 2C labeled with Ponceau S. The labeled blot is shown below including the region cropped for Figure 3—figure supplement 2C. (B) Complete blot corresponding to Figure 3—figure supplement 2C after western blotting with actin- and Rps12-specific antibodies (blot was cut in two). (C) Blots from panel B with labels, including regions cropped for Figure 3—figure supplement 2C.

https://cdn.elifesciences.org/articles/69322/elife-69322-fig3-figsupp2-data1-v2.zip
Figure 3—figure supplement 2—source data 2

RNA levels in ckit BM cells.

https://cdn.elifesciences.org/articles/69322/elife-69322-fig3-figsupp2-data2-v2.xlsx
Heterozygous loss of Rps12 impairs hematopoietic stem cells (HSCs) ability to reconstitute peripheral blood.

(A) Non-competitive bone marrow (BM) transplant strategy testing the long-term reconstituting activity of Rps12KO/+ HSCs. 106 bone marrow cells from Rps12KO/+ or Rps12flox/flox samples (CD45.2+) were transplanted into lethally irradiated B6.SJL (CD45.1+) mice, peripheral blood chimerism was determined every 4 weeks. (B) Kaplan-Meier survival curves of mice transplanted with BM cells from Rps12KO/+ and control Rps12flox/+ or Rps12flox/flox mice (control n=20 and KO/+ n=20 transplanted mice, the combination of two independent non-competitive transplants with 1 donor per genotype transplanted into 10 host mice each). (C) Frequency of recipient mice with long-term (20 weeks) multi-lineage reconstitution (≥0.5% in all three macrophages, B, and T cells) (control n=20 and KO/+ n=20 transplanted mice, the combination of two independent non-competitive transplants). (D–G) Peripheral blood donor-derived (D) total chimerism and (E–G) multi-lineage chimerism in non-competitively transplanted whole bone marrow (CD45.2+) recipients (flox/flox n=10 and KO/+ n=10). (H) Schematic representation of the competitive bone marrow transplant. 5 × 105 cells from Rps12KO/+ or Rps12flox/+ donor bone marrow (CD45.2+) mixed with 5 × 105 competitor bone marrow cells from B6.SJL (CD45.1+) mice were injected into lethally irradiated B6.SJL (CD45.1+) mice. Chimerism in peripheral blood was determined every 4 weeks and bone marrow chimerism was analyzed at 20 weeks after transplant. (I) Total bone marrow chimerism and (J) HSCs donor-derived (CD45.2+) chimerism in the recipient bone marrow (flox/+ n=10 and KO/+ n=10 competitive-transplanted mice). (K–N) Donor-derived peripheral blood chimerism of competitively transplanted Rps12KO/+ or Rps12flox/+ bone marrow cells as described in (H). Non- competitive transplants were performed twice, using different controls: Rps12flox/+ or Rps12flox/flox. The competitive transplant was performed once, using Rps12flox/+ mice as a control group. Statistical analysis: data represent mean +/− SEM, shown as the error bars, unpaired t-tests were performed to assess significance among populations between genotypes *p<0.05, **p<0.01, ***p<0.001, ****p<0.0001.

Embryonic hematopoietic system is largely unaffected in Rps12KO/+ animals.

(A) Representative images of Rps12+/- and littermate E13.5 fetal livers. (B) Quantification of the total number of cells per liver, normalized to embryo weight (+/+ n=9 and KO/+ n = 8). (C) Representative flow cytometry gating of erythropoietic populations using Ter119 and CD71 markers of fetal liver samples from E13.5 embryos. (E) Representative flow cytometry gating of Lin- (top) and LSK (bottom) populations in E13.5 fetal livers. (F, G, H) LT-HSCs, ST-HSCs, and indicated progenitor populations represented as percentages of the Lin- population in E13.5 fetal livers. (D, F, G, H) Biological samples are +/+ n=8 and KO/+ n=4. Statistical analysis: quantifications represent mean +/− SEM, shown as the error bars, unpaired t-tests were performed to establish significance among populations between genotypes *p<0.05, **p<0.01, ***p<0.001, ****p<0.0001.

Hematopoietic stem cells (HSCs) and other hematopoietic progenitors have altered cycling, global translation levels, and apoptosis in Rps12KO/+ bone marrow.

(A) Representative flow cytometry gating of HSCs (Flk2CD48LSK) cell cycle stages (G0, G1, S/G2/M) distribution determined by DNA (Hoechst) and Ki67 levels. (B) Cell cycle stages distribution in HSCs and in indicated progenitor populations. Asterisks correspond to p values assessing significant differences in each cell cycle stage between Rps12KO/+ and Rps12+/+ mice (6- to 8-week-old littermates, +/+ n=4, and KO/+ n=3). (C) Representative flow cytometry histogram showing OPP intensity in RpS12KO/+ (green) and Rps12+/+ (gray) HSCs. (D, E) Median o-propargyl puromycin (OPP) intensity of the indicated bone marrow populations (6- to 8-week-old littermates, +/+ n=4, and KO/+ n=3). This analysis was repeated in 6- to 7-month-old mice with similar results. (F) Representative images of bone marrow cytospins showing the high number of apoptotic cells (arrows) in Rps12KO/+ samples. (G) Representative flow cytometry gating of LIN- population showing apoptotic populations as determined by AnexinV and PI staining. (H, I) Percentage of apoptotic (AnnexinV+) cells in LSK (LincKit+Sca1+) and Myeloid progenitor (MPROG; LincKit+Sca1) populations (6- to 8-weeks-old littermates, +/+ n=4, and KO/+ n=3). Statistical analysis: quantifications represent mean +/− SEM, shown as the error bars, two-way ANOVA (B–F), and unpaired t-tests were performed to establish significance among populations between genotypes *p<0.05, **p<0.01, ***p<0.001, ****p<0.0001.

Figure 6—source data 1

Hematopoietic population cycling, apoptosis, and translation.

https://cdn.elifesciences.org/articles/69322/elife-69322-fig6-data1-v2.xlsx
Decreased Rps12 levels lead to the excessive activation of the AKT/MTOR and ERK signaling pathways.

(A–H) Representative phospho-flow cytometry histograms and quantification of the normalized geometric mean fluorescent intensity of pAKT (Ser 473) (A, D), pS6 (Ser235/236) (B, E), p4EBP1 (Thr37/46) (C, F), and pERK1(Thr202/Tyr204) (D, H) signal in the LSK (A, B, C, G) and MPROG (D, E, F, H) bone marrow cell populations. Baseline signal was determined in the none treated (NT) serum-starved cells, stimulation was done with the stem cell factor (SCF) ex vivo for 5 min. Immunophenotypic populations were defined as follows: LSK: LincKit+Sca1+, MPROG: LincKit+Sca1. (I) Representative images of western blot analysis and quantification of phospho-eIF2α normalized to the total eIF2α protein in cKit-enriched BM samples (6- to 8-weeks-old littermates, +/+ n=4, and KO/+ n=4) (A–H) 7-weeks-old littermates, +/+ n=6, and KO/+ n=6 biological samples were used. Statistical analysis: quantifications represent mean +/− SEM, shown as the error bars, one-way ANOVA Tukey’s multiple comparison tests were performed to establish significance among samples between genotypes.

Figure 7—source data 1

Blots of cKit + bone marrow cells.

(A) Complete blot shown in Figure 7I, after blotting with anti-βactin. On the right the blot is shown with labels and with the section cropped for Figure 7I indicated. (B) Complete blot showed after blotting with anti-IF2α. On the right the blot is shown with labels and with the section cropped for Figure 7I indicated. (C) Complete blot showed after blotting with anti-pIF2α. On the right the blot is shown with labels and with the section cropped for Figure 7I indicated.

https://cdn.elifesciences.org/articles/69322/elife-69322-fig7-data1-v2.zip
Figure 7—source data 2

pAKT, pS6, and pERK1 levels in hematopoietic progenitors.

https://cdn.elifesciences.org/articles/69322/elife-69322-fig7-data2-v2.xlsx
Figure 8 with 1 supplement
Heterozygous loss of Rps12 in the hematopoietic cells impairs translation in the hematopoietic stem and progenitor cells and leads to pancytopenia.

(A) Schematic representation of the time-course analysis testing the effect of the heterozygous loss of Rps12 activity in hematopoietic stem cells (HSCs). (B–D) Analysis of Rps12flox/+; Tal1-Cre-ERT (Rps12flox/+) and Rps12flox/+(CNTRL) at 12 weeks post tamoxifen treatment (TAM): (B) Peripheral blood cell analysis, (C) quantification of bone marrow cellularity and absolute cell count of bone marrow populations per femur, (D) representative flow histograms, and quantification of the median OPP intensity in bone marrow populations. (E) Peripheral blood cell analysis at 14 weeks and (F) quantification of bone marrow cellularity and absolute cell count of bone marrow populations per femur. (G) Schematic summary of the phenotypic analysis of mouse models. Immunophenotypic populations were defined as follows: MPROG: LincKit+Sca1, LSK: LincKit+Sca1+; MPP3,2: LincKit+Sca1+Flk2CD48+, HSCs: LincKit+Sca1+Flk2CD48. Statistical analysis: quantifications represent mean +/− SEM, shown as the error bars. Significance was determined using the Welch’s t-test *p≤0.05, **p≤0.01. At each time point n (Rps12flox/+)=5 and n (CNTRL)=5. Schematics created with BioRender.

Figure 8—figure supplement 1
Heterozygous loss of Rps12 in the hematopoietic cells.

(A–D) Analysis of Rps12flox/+; Tal1-Cre-ERT (Rps12flox/+) and Rps12flox/+ (CNTRL) at 7 weeks post heterozygous Rps12 excision with tamoxifen (TAM): (A) Peripheral blood excision analysis at 2 and 7 weeks post TAM treatment. (B) Peripheral blood cell analysis, (C) quantification of bone marrow cellularity and absolute cell count of bone marrow populations per femur, (D) representative flow histograms and quantification of the median o-propargyl puromycin (OPP) intensity in bone marrow populations. (E) Cell cycle analysis of bone marrow populations at 12 weeks post TAM treatment. (F) Representative flow histograms and quantification of the median OPP intensity in bone marrow populations at 14 weeks post TAM treatment. Immunophenotypic populations were defined as follows: MPROG: LincKit+Sca1, LSK: LincKit+Sca1+; MPP3,2: LincKit+Sca1+Flk2CD48+, HSCs: LincKit+Sca1+Flk2CD48. Significance was determined using the Welch’s t-test ns ≥0.05. At each time point n=5 for both cohorts Rps12flox/+ and CNTRL.

Figure 8—figure supplement 1—source data 1

Analysis of Rps12 SCL-CRE excised hematopoietic progenitors.

https://cdn.elifesciences.org/articles/69322/elife-69322-fig8-figsupp1-data1-v2.xlsx

Tables

Key resources table
Reagent type (species) or resourceDesignationSource or referenceIdentifiersAdditional information
Genetic reagent (Mus musculus)C57BL/6 JThe Jackson LaboratoryRRID:IMSR_JAX:000664
Genetic reagent (Mus musculus)EIIa-Cre (FVB/N-Tg(EIIa-cre)C5379Lmgd/J)The Jackson LaboratoryRRID:IMSR_JAX:003724
Genetic reagent
(Mus musculus)
B6.SJL-Ptprca/
BoyAiTac (CD45.1)
The Jackson LaboratoryRRID:IMSR_JAX:002014
Genetic reagent (Mus musculus)RpS12flox/floxThis studyRps12em1Nbakr MGI:6388411Generated for this study
Genetic reagent (Mus musculus)Scl-Cre-ERThe Jackson LaboratoryRRID:IMSR_JAX:037466
Genetic reagent (Mus musculus)RpS12flox/+; Scl-Cre-ERThis studyGenerated for this study
AntibodyRat monoclonal CD16/CD32BD biosciencesCat # 553142Clone: 2.4G2
(1 µl per 107 cells)
AntibodyAPC-Cy7 Rat anti-mouse monoclonal Gr1BD biosciencesCat # 557661Clone: RB6-8C5
(1 µl per 107 cells)
AntibodyPE rat anti-mouse
monoclonal Mac1
BioLegendCat # 101208Clone: M1/70
(1 µl per 107 cells)
AntibodyAlexa Fluor 700 Rat
anti-Mouse monoclonal B220
BD biosciencesCat # 557957Clone: RA3-6B2
(1 µl per 107 cells)
AntibodyAPC Rat Anti-Mouse
monoclonal Thy1.2
BD biosciencesCat # 553007Clone: 53–2.1
(1 µl per 107 cells)
AntibodyFITC Mouse Anti-Mouse monoclonal CD45.1BD biosciencesCat # 553775Clone: A20
(1 µl per 107 cells)
AntibodyPE/Dazzle 594 mouse anti-mouse monoclonal CD45.2BioLegendCat # 109845Clone:104
(1 µl per 107 cells)
AntibodyCD3e hamster
monoclonal, Biotin,
eBioscienceCat # 13003182Clone: 145–2 C11
(1 µl per 107 cells)
AntibodyCD4 rat Monoclonal, Biotin,eBioscienceCat #13004182Clone: GK1.5
(1 µl per 107 cells)
AntibodyCD8a rat Monoclonal, Biotin,eBioscienceCat # 13008182Clone: 53–6.7
(1 µl per 107 cells)
AntibodyGr1 rat Monoclonal, Biotin,eBioscienceCat # 13593182Clone: RB68C5
(1 µl per 107 cells)
AntibodyB220 rat Monoclonal, Biotin,eBioscienceCat # 13045282Clone: RA3-6B2
(1 µl per 107 cells)
AntibodyCD19 mouse
Monoclonal, Biotin,
eBioscienceCat # 13019182Clone: MB 19–1
(1 µl per 107 cells)
AntibodyTer119 rat
Monoclonal, Biotin,
eBioscienceCat # 13592182Clone: TER119
(1 µl per 107 cells)
AntibodyPE/Cyanine7 rat anti-mouse monoclonal Sca-1BioLegendCat #108114Clone: D7
(1 µl per 107 cells)
AntibodyAPC Rat Anti-Mouse
monoclonal cKit
BD BiosciencesCat #553356Clone:2B8
(1 µl per 107 cells)
AntibodyPE Rat Anti-Mouse
monoclonal FCRg
Thermo FisherCat # 12-0161-82Clone: 93
(1 µl per 107 cells)
AntibodyeFluor 450 Rat Anti-Mouse monoclonal CD34Thermo FisherCat #48-0341-80Clone:RAM34
(1 µl per 107 cells)
AntibodyBrilliant Violet 421 Rat
anti-Mouse monoclonal CD150
BD BiosciencesCat #562811Clone: Q38-480
(1 µl per 107 cells)
AntibodyAlexa Fluor 700 hamster
anti-mouse monoclonal CD48
BioLegendCat #103426Clone: HM48-1
(1 µl per 107 cells)
AntibodyPE/Cyanine5 Rat anti-mouse monoclonal Flk-2BioLegendCat #135312Clone: A2F10
(1 µl per 107 cells)
AntibodyBrilliant Violet 605 mouse anti-mouse monoclonal CD45.2BioLegendCat #109841Clone: 104
(1 µl per 107 cells)
AntibodyPerCP/Cyanine5.5 rat anti-mouse monoclonal IL-7RαBioLegendCat #135021Clone: A7R34
(1 µl per 107 cells)
OtherStreptavidin-APC-Cy7BD BiosciencesCat # 554063second-step reagent for cells
stained with biotinylated
primary antibodies
AntibodyPE anti-mouse monoclonal Flk-2BioLegendCat # 135306Clone: A2F10
(1 µl per 107 cells)
Commercial assay, kitFITC Annexin VBD BiosciencesCat # 560931Apoptosis detection:
Phosphatidylserine probe
Commercial assay, kitPropidium IodideBD BiosciencesCat # 556463Apoptosis detection:
Staining Solution
AntibodypS6 (Ser235/236) Alexa 488
rabbit monoclonal
Cell SignalingCat # 4803 SClone: D57.2.2E
ICFC (1:50)
AntibodypERK1 (T202/Y204)
Alexa 488 mouse
monoclonal
Cell SignalingCat # 4374Clone: E10
ICFC (1:20)
AntibodypAkt (Ser473) AF647
rabbit monoclonal
Cell SignalingCat # 2337Clone: 193H12
ICFC (1:20)
Antibodyp4E-BP1 (Thr37/46) rabbit monoclonal AF647Cell SignalingCat # 5123Clone: 236B4
ICFC (1:20)
AntibodyFITC Mouse monoclonal
Anti-Ki-67
BD BiosciencesCat # 556026
RRID: AB_396302
Clone: B56
(1 µl per 107 cells)
otherHoechst 33342 SolutionBD BiosciencesCat # 561908See legend to Figure 6
Commercial assay, kitClick-iT Plus OPP Alexa Fluor 488Thermo FisherCat # C10456Protein Synthesis Assay Kit
AntibodyAPC rat anti-mouse
monoclonal TER-119
BioLegendCat # 116211Clone: TER119
(1 µl per 107 cells)
AntibodyPE rat anti-Mouse
monoclonal CD71
BD biosciencesCat # 561937Clone: C2
(1 µl per 107 cells)
Sequence-based reagentgRNA 1This studyPCR primerCGCAGTAGACACGCTATCGCCGG
Sequence-based reagentgRNA 2This studyPCR primerGTGGGTTGCTGTGTGGATCGGGG
Sequence-
based reagent
F1This studyPCR primerGCACATGCGCACAGAAGT
Sequence-
based reagent
R1This studyPCR primerCGGACTATCTATCCCCACGA
Sequence-based reagentF2This studyPCR primerGTACAGCTATCTGCCAGGAA
Sequence-
based reagent
R2This studyPCR primerCGAGGTCGACGGTATCG
Sequence-
based reagent
F3This studyPCR primerCGATACCGTCGACCTCG
Sequence-
based reagent
R3This studyPCR primerGTGCTAGCAACAGAAGGTTC
Sequence-
based reagent
F4This studyPCR primerGTCTCAATACTGTGGGGTGT
Commercial
assay, kit
Cytofix/CytopermBD biosciencesCat # BDB554714Fixation/Permeabilization
Solution Kit
Commercial
assay, kit
DNeasy kitQiagenCat #69504DNA extraction kit
Chemical
compound, drug
mSCFPeprotechCat # 250–03Cytokine
OtherMethoCult GF M3434Stem Cell TechnologiesCat # 03434Methylcellulose media
OtherMethoCult M3334Stem Cell TechnologiesCat # 03334Methylcellulose media
OtherCD117 MicroBeads,
mouse
Miltenyi BiotecCat #130-091-224See ‘Western blot analysis’
in methods section
OtherLS ColumnMiltenyi BiotecCat # 130-042-401Separation column
AntibodyRpS12, rabbit polyclonalProteintechCat # 16490–1-AP1:1000
Antibodyβ-Actin (13E5) Rabbit
monoclonal mAb
Cell SignalingCat # 49701:1000
AntibodyeIF2α (D7D3) Rabbit
monoclonal mAb
Cell SignalingCat # 53241:1000
Antibodyphospho-eIF2α (Ser52) rabbit polyclonalThermo ScientificCat # BS-4842R1:1000
Commercial
assay, kit
miRNA First-
Strand
Synthesis Kit
Takara BioCat # 638313
Commercial
assay, kit
mirVana miRNA Isolation KitThermo FisherCat # AM1560
OtherPower SYBR Green
Master Mix
Applied BiosystemsCat # 4367659PCR reaction mix

Additional files

Supplementary file 1

Antibodies used for flow cytometry panels of peripheral blood and bone marrow samples.

This file contains a list of all the biotinylated and fluorochrome-conjugated antibodies used in both live and fixed cell samples used in the experiments described in this paper. The antibodies are grouped by flow cytometry panel and include clone name as well as the manufacturer and catalog number information for ease of use and reproducibility. Additional information on antibody concentration used for staining can be found in the ‘Key Resources Table.’

https://cdn.elifesciences.org/articles/69322/elife-69322-supp1-v2.xlsx
Transparent reporting form
https://cdn.elifesciences.org/articles/69322/elife-69322-transrepform1-v2.pdf

Download links

A two-part list of links to download the article, or parts of the article, in various formats.

Downloads (link to download the article as PDF)

Open citations (links to open the citations from this article in various online reference manager services)

Cite this article (links to download the citations from this article in formats compatible with various reference manager tools)

  1. Virginia Folgado-Marco
  2. Kristina Ames
  3. Jacky Chuen
  4. Kira Gritsman
  5. Nicholas E Baker
(2023)
Haploinsufficiency of the essential gene Rps12 causes defects in erythropoiesis and hematopoietic stem cell maintenance
eLife 12:e69322.
https://doi.org/10.7554/eLife.69322