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PubMed2026

AAV-mediated CBLN1 replacement rescues hereditary ataxia caused by bi-allelic CBLN1 variants.

Cbln1 is a secreted synaptic organizer required for parallel fiber-Purkinje cell (PF-PC) synapse integrity, climbing fiber (CF) refinement, and cerebellar motor learning but has not previously been implicated in human disease. We identified bi-allelic CBLN1 missense variants (A63P and Y112C) in two unrelated families with early-onset cerebellar ataxia accompanied by oculomotor abnormalities, cerebellar atrophy, and variable cognitive delay. In heterologous cells, both variants showed reduced steady-state protein abundance, impaired maturation through the early secretory pathway, and little or no detectable secretion, resulting in markedly reduced extracellular CBLN1 availability. Consistently, cerebellar granule cells expressing CBLN1-Y112C failed to induce excitatory synapses onto glutamate receptor δ2 (GluD2)-expressing cells in vitro. A knockin mouse harboring Y112C lacked synaptic Cbln1 and recapitulated key features of Cbln1 deficiency, including disrupted PF-PC synapse organization, persistent CF multi-innervation, impaired PF-PC transmission, and long-term depression, and deficits in motor coordination and oculomotor learning. Notably, systemic delivery of an astrocyte-targeted adeno-associated virus expressing wild-type CBLN1 in adult mutant mice restored synaptic CBLN1 localization, cerebellar synaptic function, plasticity, and behavior. These findings establish CBLN1 deficiency as a cause of hereditary ataxia and identify extracellular CBLN1 replacement as a therapeutic strategy for a reversible cerebellar synaptopathy.

CBLN1↗
PubMed2005

Insertion of Cre into the Pax3 locus creates a new allele of Splotch and identifies unexpected Pax3 derivatives.

Pax3 is a transcription factor expressed in the dorsal neural tube and somite of the developing embryo. It plays critical roles in pre-migratory neural crest cells and in myogenic precursors of skeletal muscle. Pax3-deficient Splotch embryos display neural tube and neural crest defects and lack hypaxial muscles. We have created a new allele of Splotch by replacing the first coding exon with a gene encoding Cre recombinase. This functions as a null allele and no Pax3 protein is detected in homozygous embryos. Heterozygous Pax3(Cre/+) mice display a white belly spot, as do Splotch heterozygotes. Homozygous Pax3(Cre/Cre) embryos are embryonic lethal. We have used Pax3(Cre/+) mice to fate-map Pax3 derivatives in the developing mouse. As expected, neural crest and some somitic derivatives are identified. However, we also detect previously unappreciated derivatives of Pax3-expressing precursors in the colonic epithelium of the hindgut and within the urogenital system.

Alleles↗
PubMed2026

Transcriptomic shift in ethanol and amino acid metabolic genes regulated by Med15 during alcoholic fermentation.

Organisms that thrive in extreme environments provide natural experiments in evolution, revealing the genetic regulators that orchestrate complex phenotypic change. Wine yeast (WY) are specialized strains that are adapted to survive in the wine making environment while producing high concentrations of ethanol. In addition to large genomic changes that differentiate WY from yeast used in other industries, SNP and polyglutamine tract polymorphism in the transcriptional regulator Med15 are associated with the fermentation efficiency and stress response phenotypes of WY. In this study, we investigated the transcriptional differences during wine fermentation in transgenic lab strain yeast having integrated WY MED15 alleles. Compared to the unmodified lab strain (MED15 LAB), the same strain in which the MED15 locus was replaced with a MED15 allele from yeast isolated from palm wine, the fermented sap of palm (oil, date, coconut) trees (MED15 WY23), exhibited enhanced expression of amino acid biosynthesis genes as well as stress resistance and metabolic adaptation genes. Our experimental data confirm the role of arginine in efficient fermentation and suggest that certain MED15 alleles alter the expression patterns of arginine pathway genes in some cases improving carbon flux under nitrogen stress. The global benefits conferred by natural polymorphisms in a single transcriptional regulator highlight Med15 as a target for engineering of strains devoted to various types of alcohol production.

Ethanol↗
PubMed1994

Molecular gene cloning and nucleotide sequencing and construction of an aroA mutant of Pasteurella haemolytica serotype A1.

The aroA gene of Pasteurella haemolytica serotype A1 was cloned by complementation of the aroA mutation in Escherichia coli K-12 strain AB2829. The nucleotide sequence of a 2.2-kb fragment encoding aroA predicted an open reading frame product 434 amino acids long that shows homology to other bacterial AroA proteins. Several strategies to inactivate aroA were unsuccessful. Gene replacement was finally achieved by constructing a replacement plasmid with aroA inactivated by insertion of a P. haemolytica ampicillin resistance fragment into a unique NdeI site in aroA. A hybrid plasmid was constructed by joining the aroA replacement plasmid with a 4.2-kb P. haemolytica plasmid which encodes streptomycin resistance. Following PhaI methylation, the replacement plasmid was introduced by electroporation into P. haemolytica NADC-D60, a plasmidless strain of serotype 1A. Allelic exchange between the replacement plasmid and the chromosome of P. haemolytica gave rise to an ampicillin-resistant mutant which grew on chemically defined P. haemolytica medium supplemented with aromatic amino acids but failed to grow on the same medium lacking tryptophan. Southern blot analysis confirmed that aroA of the mutant was inactivated and that the mutant was without a plasmid.

Amino Acid Sequence↗
PubMed1989

In vitro construction of gshB::kan in Escherichia coli and use of gshB::kan in mapping the gshB locus.

The Escherichia coli structural gene for glutathione synthetase, gshB, was cloned into pBR322. Plasmids containing gshB were able to complement the glutathione requirement of a trxA gshB double mutant, and cells containing the plasmids were found to have elevated levels of glutathione synthetase. A mutant gshB allele was constructed by inserting the kan gene from pUC4K into a unique HpaI site located within gshB. The resulting plasmid-encoded allele was used to replace a genomic gshB+ by homologous recombination. The resulting strain had no detectable glutathione synthetase activity. The gshB allele containing the kan insertion was used to map gshB on the E. coli chromosome by P1 transduction. The results indicated that gshB is located at 63.4 min, between metK and speC. The allele was further localized to a region of 3,100 to 3,120 kilobase pairs on the physical map (restriction map) of E. coli by DNA-DNA hybridization to a series of lambda bacteriophages (Y. Kohara, K. Akiyama, and K. Isono, Cell 50:495-508, 1987).

Chromosome Mapping↗
PubMed1995

A tricyclic ring system replaces the variable regions of peptides presented by three alleles of human MHC class I molecules.

BACKGROUND: Cytotoxic T-lymphocytes (CTLs) recognize complexes of short peptides with major histocompatibility complex (MHC) class I molecules. MHC molecules are polymorphic, and the products of different MHC alleles bind to different subsets of peptides. This is due to differences in the shape of the peptide-binding groove on the surface of the MHC protein, especially the 'pockets' into which anchor residues at each end of the peptide fit. Non-peptidic ligands for class I molecules may be useful clinically. RESULTS: By applying computer-aided design methods guided by X-ray structures, we designed and synthesized several MHC class I ligands, based on known peptide ligands, in which the tricyclic, aromatic compound phenanthridine replaced the central amino acids of the peptides. These semi-peptidic fluorescent ligands bound with high affinity and with allelic specificity to the peptide-binding groove of different MHC class I molecules, forming crystallizable complexes. CONCLUSIONS: Specificity for binding to different MHC class I molecules can be imparted to the common phenanthridine element by judicious choice of terminal peptidic elements from either nonamer or decamer peptides. The phenanthridine-based ligands have a long bound half-life, as do antigenic peptides.

Alleles↗
PubMed2000

Allelic modifications of the cg2 and cg1 genes do not alter the chloroquine response of drug-resistant Plasmodium falciparum.

The determinant of chloroquine resistance (CQR) in a Plasmodium falciparum cross was previously mapped by linkage analysis to a 36 kb segment of chromosome 7. Candidate genes within this segment have been previously shown to include two genes, cg2 and cg1, that have complex polymorphisms linked to the CQR phenotype. Using DNA transfection and allelic exchange, we have replaced these polymorphisms in CQR parasites with cg2 and cg1 sequences from chloroquine sensitive parasites. Drug assays of the allelically-modified lines show no change in the degree of CQR, providing evidence against the hypothesis that these polymorphisms are important to the CQR phenotype. Similarly, no change was found in the degree to which verapamil or other chloroquine sensitizers reverse CQR in the transformants. These results and the high though not complete degree of association of CQR with cg2 and cg1 polymorphisms in field isolates suggest involvement of another nearby gene in the P. falciparum CQR mechanism.

Alleles↗
PubMed1999

Construction of mutant strains of Neisseria gonorrhoeae lacking new antibiotic resistance markers using a two gene cassette with positive and negative selection.

The pathogenesis of infections caused by Neisseria gonorrhoeae, the causative agent of the sexually transmitted disease gonorrhea, can be studied using experimental infection of human male volunteers. The desire to avoid introducing new antibiotic resistance markers into strains to be used in human experimental infection has complicated the construction of genetically defined mutants in which expression of potential virulence factors is inactivated. To facilitate construction of such mutants, we have used a two-step mutagenesis strategy that allows for gene replacements without introducing new selectable markers into the final strain. The method uses a two-gene cassette containing both a selectable marker (ermC') and a counterselectable marker (rpsL). The cassette is cloned into the gene of interest and used to replace the wild-type gene on the chromosome by allelic exchange. A second transformation replaces the cassette-containing version of the gene with an engineered version with an unmarked deletion or other mutation. The rpsL gene of Escherichia coli functioned for the counterselection in the gonococcus, albeit with low efficiency. To improve the efficiency of the counterselection, we cloned the gonococcal rpsL gene and incorporated it into the cassette. This technique has been successful in creating defined mutants for human challenge, and also circumvents the limitation in the number of different selectable markers that are useful in Neisseria species.

Anti-Infective Agents↗
PubMed1990

The Myxococcus xanthus FprA protein causes increased flavin biosynthesis in Escherichia coli.

The fprA gene is immediately adjacent to the csgA gene (formerly known as spoC) of Myxococcus xanthus. Whereas the csgA gene has an essential role in cell interactions during the developmental cycle, the function of the fprA gene is unknown. Gene disruption was used to determine what affect a null mutation in this gene has on the phenotype of the cell. A csgA-fprA deletion and an fprA frameshift mutation were constructed in vitro in a cloned copy of this locus and then inserted into the M. xanthus chromosome to create a merodiploid with the wild-type and mutant alleles in tandem. The merodiploid was then allowed to segregate one of the two alleles along with the vector sequences in an effort to replace the wild-type allele with the mutant allele. All of the segregants had the wild-type allele, suggesting that a functional fprA gene is essential for vegetative growth. The fprA gene was placed under control of the lacZ transcriptional and translational signals and overexpressed in Escherichia coli, and the new host was examined for any phenotypic changes. A 27-kilodalton protein was observed in sodium dodecyl sulfate-polyacrylamide gels of total-cell protein as predicted from the DNA sequence of this gene. Overexpression of FprA caused the accumulation of a yellow pigment with spectral and redox properties similar to that of the flavins. The pigment cochromatographed with flavin mononucleotide by Silica Gel G thin-layer chromatography. Approximately two-thirds of the total cellular flavin was associated with soluble protein. The major soluble flavin-associated protein was purified on DEAE-Bio-Gel A and Phenyl-Sepharose CL-4B and by polyacrylamide gel electrophoresis. The amino acid composition of the purified protein was similar to that predicted from the DNA sequence of the FprA fusion protein. Apparently, overproduction of FprA (for flavin-associated protein A) in E. coli resulted in a large increase in flavin biosynthesis. Together, these results suggest that the fprA gene encodes a protein that is associated with flavin mononucleotide and has an essential function in M. xanthus.

Amino Acids↗
PubMed2026

Transcriptomic shift in ethanol and amino acid metabolic genes regulated by Med15 during alcoholic fermentation.

Organisms that thrive in extreme environments provide natural experiments in evolution, revealing the genetic regulators that orchestrate complex phenotypic change. Wine yeast are specialized strains that are adapted to survive in the wine making environment while producing high concentrations of ethanol. In addition to large genomic changes that differentiate wine yeast from yeast used in other industries, single nucleotide and polyglutamine tract polymorphisms in the transcriptional regulator Med15 are associated with the fermentation efficiency and stress response phenotypes of wine yeast. In this study we investigated the transcriptional differences during wine fermentation in transgenic lab strain yeast having integrated wine yeast MED15 alleles. Compared to the unmodified lab strain (LAB or MED15 LAB ), the same strain in which the MED15 locus was replaced with a MED15 allele from yeast isolated from palm wine, the fermented sap of palm (oil, date, coconut) trees, (WY23, or MED15 WY23 ) exhibited enhanced expression of glycolytic, fermentation, and amino acid biosynthesis genes. Our experimental data confirms the importance of arginine biosynthetic genes during the fermentation process and suggests that the improvement in fermentation efficiency in strains with MED15 alleles from some wine yeast strains may be related to the role of Med15 in expression of the genes of the arginine biosynthetic pathway. The global benefit conferred by polymorphisms in a single transcriptional regulator, makes Med15 a prime target for engineering of strains devoted to various types of alcohol production.

Journal Article↗
PubMed2006

Estrogen sulfation genes, hormone replacement therapy, and endometrial cancer risk.

BACKGROUND: Unopposed estrogen replacement therapy is associated with increased risk of endometrial cancer. To investigate the mechanism of this association, we evaluated whether risk of endometrial cancer was associated with the genotypes involved in steroid hormone metabolism and the duration of exogenous hormone use. METHODS: A population-based case-control study in nine counties of the Philadelphia metropolitan area was undertaken with 502 case patients with endometrial cancer and 1326 age- and race-matched control subjects. Data regarding exogenous hormone use were obtained by interview, and genotypes of the genes COMT, CYP1A1, CYP1A2, CYP1B1, CYP3A4, PGR, SULT1A1, SULT1E1, and UGT1A1 were obtained by polymerase chain reaction techniques. Conditional logistic regression was used to examine the relationship among genotype, hormone use, and endometrial cancer risk. RESULTS: Associations were observed between the risk of endometrial cancer and genotypes of the following steroid hormone metabolism genes: CYP1A1*2C (adjusted odds ratio [OR] = 1.68, 95% confidence interval [CI] = 1.08 to 2.61); SULT1A1*3 (adjusted OR = 0.51, 95% CI = 0.29 to 0.92); and the G --> A variant in the promoter of SULT1E1 at position -64 (adjusted OR = 1.45, 95% CI = 1.06 to 1.99). We observed a statistically significant interaction between estrogen replacement therapy use and SULT1A1*2 genotype: the SULT1A1*2 allele and long-term use of estrogen replacement therapy were associated with statistically significantly higher risk of endometrial cancer (adjusted OR = 3.85, 95% CI = 1.48 to 10.00) than that of the SULT1A1*2 allele and no estrogen replacement therapy use. CONCLUSIONS: Among women with long-term use of estrogen replacement therapy or combined hormone replacement therapy, the risk of endometrial cancer may be associated with functionally relevant genotypes that regulate steroid hormone sulfation.

Aryl Hydrocarbon Hydroxylases↗
PubMed1991

Site-directed mutagenesis of the yeast actin gene: a test for actin function in vivo.

The yeast Saccharomyces cerevisiae has a single actin gene, ACT1, whose protein product is essential for cell viability. To study the structure-function relationship of this evolutionarily highly conserved protein, we have introduced into the gene several mutations leading to substitutions of amino acids that, by chemical crosslinking experiments, have previously been identified as potential sites for the interaction of actin with several actin-binding proteins and of actin monomers in filaments. The in vitro mutated actin genes were used to replace one chromosomal ACT1 allele in diploid cells. From diploid transformants, haploids that solely depended on mutant actins were isolated and their phenotypic alterations studied. The replacement of the N-terminal acidic residues (Asp2 and Glu4) with valine was functionally neutral. Substitutions of Asp11 led to dominant lethality. Substitutions of Lys191, Lys336, Trp356, Lys373 and Cys374 were without observable effect on cell growth, proliferation and morphology. Deletion of the C-terminal end, Lys-Cys-Phe-COOH, was lethal, whereas successive removal of the C-terminal Phe375 or Cys374 and Phe375 resulted in temperature sensitivity. At the nonpermissive temperature, the mutant cells were characterized by an increase in size, a tendency to lyse and significant alterations of the actin cytoskeleton.

Actins↗
PubMed2005

A putative dual-specific protein phosphatase encoded by YVH1 controls growth, filamentation and virulence in Candida albicans.

In response to stimulants, such as serum, the yeast cells of the opportunistic fungal pathogen Candida albicans form germ tubes, which develop into hyphae. Yvh1p, one of the 29 protein phosphatases encoded in the C. albicans genome, has 45% identity with the dual-specific phosphatase Yvh1p of the model yeast Saccharomyces cerevisiae. In this study, Yvh1p expression was not observed during the initial step of germ tube formation, although Yvh1p was expressed constitutively in cell cycle progression of yeast or hyphal cells. In an attempt to analyse the function of Yvh1p phosphatase, the complete ORFs of both alleles were deleted by replacement with hph200-URA3-hph200 and ARG4. Although YVH1 has nine single-nucleotide polymorphisms in its coding sequence, both YVH1 alleles were able to complement the YVH1 gene disruptant. The vegetative growth of Deltayvh1 was significantly slower than the wild-type. The hyphal growth of Deltayvh1 on agar, or in a liquid medium, was also slower than the wild-type because of the delay in nuclear division and septum formation, although germ tube formation was similar between the wild-type and the disruptant. Despite the slow hyphal growth, the expression of several hypha-specific genes in Deltayvh1 was not delayed or repressed compared with that of the wild-type. Infection studies using mouse models revealed that the virulence of Deltayvh1 was less than that of the wild-type. Thus, YVH1 contributes to normal vegetative yeast or hyphal cell cycle progression and pathogenicity, but not to germ tube formation.

Candida albicans↗
PubMed1999

Extensive variation in the ddl gene of penicillin-resistant Streptococcus pneumoniae results from a hitchhiking effect driven by the penicillin-binding protein 2b gene.

An internal fragment of the ddl gene, encoding the cytoplasmic enzyme D-alanyl-D-alanine ligase, was sequenced from 566 isolates of Streptococcus pneumoniae and single isolates of Streptococcus mitis and Streptococcus oralis. The 52 alleles found among the S. pneumoniae isolates fell into two groups. Group A alleles were very uniform in sequence and were present in both penicillin-susceptible and penicillin-resistant pneumococci. Group B alleles were much more diverse and were found only in penicillin-resistant isolates. The Streptococcus oralis and Streptococcus mitis alleles were less diverged from group A alleles than some of the group B pneumococcal alleles, suggesting that the latter alleles contain interspecies recombinational replacements. The ddl gene was located 783 bp downstream of the penicillin-binding protein 2b gene (pbp2b). Sequencing of the pbp2b-recR-ddl-murF region of three penicillin-resistant pneumococci that had diverged ddl alleles showed that the whole region from pbp2b to ddl (or beyond) was highly diverged (about 8%) compared with the sequences from three penicillin-susceptible isolates. The high levels of diversity in the group B ddl alleles from penicillin-resistant isolates were ascribed to a hitchhiking effect whereby interspecies recombinational exchanges at pbp2b, selected by penicillin usage, often extend into, or through, the ddl gene. The data allow the average size of the interspecies recombinational replacements to be estimated at about 6 kb.

Alleles↗
PubMedDate not supplied

The avrRpm1 gene of Pseudomonas syringae pv. maculicola is required for virulence on Arabidopsis.

We demonstrate that the avirulence gene avrRpm1, isolated from Pseudomonas syringae pv. maculicola strain Psm M2 via interaction with the Arabidopsis resistance gene RPM1, is also required for maximal virulence on this host. Two avrRpm1::Tn3-Spice marker-exchange mutants do not elicit a hypersensitive reaction on RPM1-containing Arabidopsis accessions Col-0 and Oy-0. Surprisingly, these mutants neither generate disease symptoms, nor grow in planta, after inoculation onto susceptible accessions Nd-0, Fe-1, and Mt-0. These deficiencies can be corrected in a merodiploid containing a wild-type avrRpm1 allele, and are not observed following gene-replacement with avrRpm1::Tn3-Spice alleles containing insertions just beyond the 3' terminus of the avirulence gene open reading frame. AvrRpm1 mRNA is expressed in low, but detectable amounts, in rich media. Induced accumulation of transcript is observed 3 h after shift to minimal media, and an avrRpm1::Tn3-Spice marker-exchanged reporter gene reaches maximal induction 30 min after shift. AvrRpm1 transcription starts 5 base-pairs 3' of the putative regulatory "hrp-box" cis-element found upstream of many P. syringae avr and hrp genes. Transcriptional induction of the marker-exchanged reporter gene in minimal media is enhanced by a carbon source. Induction in planta is the same in either resistant or susceptible Arabidopsis accessions, and is unaffected by the presence or absence of wild-type avrRpm1. As previously observed for many other P. syringae avr genes, transcriptional regulation of avrRpm1 in minimal media is dependent on hrpL and hrpS.

Arabidopsis↗
PubMed2006

From genetics to epigenetics.

In the post human-genome area, the challenge is to derive details of heritable variation in relation to how human variation reflects adaptation to the different environments. Heterozygote advantage represents a superior genetic adaptation presumably explaining the presence of the allele at frequencies above those to be expected from a simple replacement of a homozygous lethal allele by mutation alone (Saugstad 1977a, 1975b, 1972). Mean birthweight of unaffected offspring of parents heterozygous for the phenylketonuria (PKU) allele averaged significantly above mean weight of all Norwegian births, rendering unaffected offspring more viable at birth and thus improving the chance for survival of the allele. A successful adaptation requires natural selection acting on that part of the body that makes a difference in survival. Skin colour variation is such a successful adaptation, for the North as opposed to the dark skins of the equator. Human Evolution in Africa and subsequent adaptations have enabled human survival all over the world with highly different light intensity (Jablonski & Chaplin 2000). That continuous variables, height, pubertal age and brain development, are multifactorially inherited and affected by epigenetic factors, was nicely demonstrated in the increase in height in Norway 1860-1960 with at the same time a reduction in pubertal age by 4yrs which may have affected the final stage in brain development. This created an increased need for brain food, N-3, to secure optimal brain function. Body growth is not brain growth. Given that the consumption of brain food (N-3) has declined to 20% only of the level 100yrs ago, what disorders are to be expected with an N-3 dietary deficit: in pregnancy, infancy and later in life? In this paper I discuss the significance of prepubertal selective pruning of excitatory synapses compared to delayed pruning and suggest relationships with brain disorders.

Adaptation, Physiological↗
PubMed2003

MHC allele-specific binding of a malaria peptide makes it become promiscuous on fitting a glycine residue into pocket 6.

Peptide 1585 (EVLYLKPLAGVYRSLKKQLE) has a highly conserved amino-acid sequence located in the Plasmodium falciparum main merozoite surface protein (MSP-1) C-terminal region, required for merozoite entry into human erythrocytes and therefore represents a vaccine candidate for P. falciparum malaria. Original sequence-specific binding to five HLA DRB1* alleles (0101, 0102, 0401, 0701, and 1101) revealed this peptide's specific HLA DRB1*0102 allele binding. This peptide's allele-specific binding to HLA DRB1*0102 took on broader specificity for the DRB1*0101, -0401, and -1101 alleles when lysine was replaced by glycine in position 17 (peptide 5198: EVLYLKPLAGVYRSLKG(17)QLE). Binding of the identified G(10)VYRSLKGQLE(20) C-terminal register to these alleles suggests that peptide promiscuous binding relied on fitting Y(12), L(15), and G(17) into P-1, P-4, and P-6, respectively. The implications of the findings and the future of this synthetic vaccine candidate are discussed.

Alleles↗
PubMed2005

Prevention of type 1 diabetes with major histocompatibility complex-compatible and nonmarrow ablative hematopoietic stem cell transplants.

Progression to hyperglycemia in young nonobese diabetic (NOD) mice is blocked by the transplantation of hematopoietic cells mismatched at the major histocompatibility complex (MHC). Because the NOD MHC class II allele, I-A(g7), is the primary disease susceptibility gene, it is logical to conclude that MHC-mismatched hematopoietic grafts prevent diabetes by replacement of this susceptibility allele on critical hematolymphoid populations. In this report, transplantation of MHC-matched purified hematopoietic stem cells (HSCs) pre-vented diabetes development in NOD mice, demonstrating that alleles of non-MHC background genes expressed on hematopoietic cells are sufficient to disrupt the autoaggressive process. Nonmarrow ablative conditioning was 100% protective, further showing that elimination of NOD hematopoiesis, including T-cells, was not required for the graft to block diabetes pathogenesis. The current standard clinical practice of hematopoietic cell transplantation uses donor/recipient pairs that are matched at the MHC. In our view, the principles established here using an MHC-matched engineered hematopoietic graft in conjunction with nonmarrow ablative conditioning to successfully block autoimmune diabetes sufficiently reduces the morbidity of the allogeneic transplantation procedure such that a similar approach can be translated to the treatment of human autoimmune disorders.

Animals↗