17 results about "Beta-thalassaemia" patented technology

The invention relates to the field of biological detection, in particular to a kit for simultaneously detecting multiple deletion type alpha-thalassemia genes and application of the kit, the kit comprises a primer group and a probe, nucleotide sequences of the primer group are shown as SEQ ID NO.1-8, and nucleotide sequences of the probe are shown as SEQ ID NO.8-12; the deletion type alpha-thalassemia gene is selected from a-alpha 3.7 deletion mutant type, a-alpha 4.2 deletion mutant type, a-SEA deletion mutant type, a Thailand deletion type and the like. The kit is a fluorescent quantitative PCR kit or a digital PCR kit. The primer and the probe in the kit have good specificity and repeatability, and the stability and the accuracy of the detection kit are guaranteed; the method is not limited to detection of known variation, and various deletion type alpha-thalassemia deletion variation can be simultaneously detected in the same tube; operation is simple, short fragments are amplified, and consumed time is short; efficiency is high, cost is low, and flux is large.

The present invention provides an application of thyroid hormones and its analogues in preparation of drugs for treating alpha-thalassemia, especially in preparation of drugs for regulating expression of zeta-globin gene. During differentiation of K562 cells, thyroid hormone analogue (Triac) can significantly up-regulate the expression of zeta-globin gene (HBZ) by 50 folds or above. The expression of zeta-globin gene (hbae5) can also be up-regulated by 30-70 folds in zebrafish treated with thyroid hormones and thyroid hormones analogues. Therefore, according to the present invention, the expression of zeta-globin gene can be significantly activated by thyroid hormones and its analogues, which may develop new potential therapies for patients with alpha-thalassemia. It provides an economical, safe and effective method for treating alpha-thalassemia and can be widely used.

The invention relates to the use of ferroportin inhibitor compounds of the general formula (I) for treating transfusion-dependent β-thalassemia.

The invention relates to the technical field of gene detection, in particular to a probe composition and a kit for screening various genetic disease related gene mutations and a preparation method of the probe composition and the kit. The hereditary diseases comprise 23 hereditary diseases such as citrullinemia type, hepatolenticular degeneration, 21-hydroxylase deficiency, progressive pseudohypertrophy muscular dystrophy, fragile X syndrome, Friedreich ataxia, glycogen accumulation disease type II, Gaucher disease, autosomal recessive deafness type 1A, Fabry disease, alpha-thalassemia, beta-thalassemia and the like. The probe composition disclosed by the invention can be used for simultaneously screening the specific mutation types of the various genetic disease related genes, and is more accurate, comprehensive, convenient, high in detection efficiency, simple and economical compared with the traditional screening.

The invention relates to the technical field of medicines, in particular to application of huperzine A in treatment of beta-thalassemia. It is found for the first time that the anti-Alzheimer disease drug huperzine A can be directly combined with gamma-globin to inhibit degradation of gamma-globin through a ubiquitin-proteasome pathway, so that the stability of gamma-globin and the fetal hemoglobin level are improved; the abnormal erythropoiesis and hemolysis phenotype of the beta-thalassemia are improved under the condition of not changing the mRNA expression. Animal experiments show that huperzine A obviously improves hematocrit and the number of red blood cells, reduces the size distribution width of the red blood cells and the proportion of reticulocytes, relieves oxidative stress, hemolysis, splenomegaly and iron overload, and has no obvious liver and kidney toxicity. The invention creatively provides a new strategy for improving HbF by regulating and controlling protein homeostasis instead of transcriptional up-regulation, and provides a new drug action mechanism and application direction for treatment of beta-thalassemia and other hemoglobin diseases.

To provide an agent for reducing iron overload in patients having conditions such as beta-thalassaemia and myelodysplastic syndrome (MDS).SOLUTION: Antibodies to enzyme matriptase-2 (MTP-2) are presented. Inhibiting MTP-2 reduces uptake of dietary iron and reduces release of iron from cellular stores in the body. Inhibitors of MTP-2 (such as antibodies to a serine protease domain) can be used to treat iron overload, which is a feature of diseases such as beta-thalassaemia and which otherwise leads to toxic accumulation of iron. Combination of an MTP-2 inhibitor with an activin receptor ligand trap, or with erythropoeitin, provides additional therapeutic effects.SELECTED DRAWING: Figure 1

Disclosed herein are potency assays for a gene therapy treatment for β-thalassemia. Also disclosed herein are methods for measuring relative potency of a drug product.

This invention provides vectors (e.g., lentiviral vectors) and expression cassettes for incorporation into vectors for expressing an alpha-globin (α-globin) gene. In certain embodiments method of treatment using such vectors are provided.

Antibodies to the enzyme matriptase-2 (MTP-2) are presented. Inhibiting MTP-2 reduces uptake of dietary iron and reduces the release of iron from cellular stores in the body. Inhibitors of MTP-2 (such as antibodies to the serine protease domain) can be used to treat iron overload, which is a feature of diseases such as beta-thalassaemia and which otherwise leads to toxic accumulation of iron. Combination of an MTP-2 inhibitor with an activin receptor ligand trap, or with erythropoietin, provides additional therapeutic effects.

The invention relates to application of a compound DMT207 in preparation of a medicine for treating beta-globin disease, and belongs to the technical field of biological medicine. The invention finds that the compound DMT207 shows the characteristic that the toxicity in a red progenitor cell line (HUDEP)-2 and a human primary hematopoietic stem cell is lower than that of decitabine, and can induce high expression of fetal hemoglobin under the condition of maintaining healthy cell activity, and the induction effect of the compound DMT207 is far higher than that of decitabine. In a beta-thalassemia model mouse, the compound DMT207 can activate fetal hemoglobin expression, relieve spleen swelling, promote erythrocyte maturation and relieve the beta-thalassemia symptom on the premise of not influencing the body weight. Therefore, compared with an existing beta-globin disease treatment product, the compound DMT207 is good in specificity, free of DNA damage, small in toxicity and wide in application prospect.

The present invention discloses a multiplex PCR primer and probe combination and a kit. anti3.7 and ααα anti4.2 A multiplex PCR primer and probe combination was constructed that can simultaneously detect the 19 α gene variations, including α-thalassemia, using a two-tube reaction system and the same reaction conditions. Based on the composition, the present invention immobilizes the probe sequences in the composition on a solid phase carrier to form a gene chip. Combined with multiplex PCR and flow-through hybridization, it achieves visual detection of the 19 α gene variations and the genotypes of the tested samples. The detection has good specificity, high accuracy and sensitivity, and is simple to operate, time-saving, and easy to read results. It is conducive to the carrier screening of α gene variations and can provide an accurate reference for clinical diagnosis or genetic counseling of α-thalassemia.

The invention belongs to the field of biology, and particularly relates to a primer blocker composition, a kit and a method for detecting a beta-thalassemia mutant type and application of the primer blocker composition, the kit and the method. The primer blocker composition comprises a primer group and a blocker, the primer group comprises an upstream primer and a downstream primer, the upstream primer, the downstream primer and the blocker are selected from at least one of combinations I to V, and the blocker is modified with a primary amino group. According to the specific primer and blocker optimally designed based on Gibbs free energy, wild-type amplification is selectively inhibited through strict matching of a 3'end base, and high specificity and high sensitivity are shown.

The invention belongs to the technical field of biology, and particularly relates to a construction method of a beta thalassemia model pig with HBB gene mutation, the invention provides a kit, the kit comprises HBB-T7-gU1, HBB-T7-gD1, HBB-28mut-ss111 and NCN protein, the HBB-T7-gU1 is sgRNA, and a target sequence binding region of the HBB-T7-gU1 is as shown in 3rd to 22nd nucleotides in SEQ ID NO: 8; the HBB-T7-gD1 is sgRNA, and a target sequence binding region of the HBB-T7-gD1 is shown as nucleotides at the 3rd to 22nd sites in SEQ ID NO: 9; the HBB-28mut-ss111 is Donor DNA (deoxyribonucleic acid), and the sequence of the HBB-28mut-ss111 is as shown in SEQ ID NO: 10.

The invention relates to a composite peptide nutritional composition as well as a preparation method and application thereof, and belongs to the technical field of functional foods. The composite peptide nutritional composition comprises a hematopoietic function regulating system (such as cattle spleen peptide, blood protein polypeptide and salmon hydrolyzed protein peptide), an iron metabolism balance regulating system (concentrated hawthorn clear juice) and a nutrition absorption promoting system (endothelium corneum gigeriae galli peptide and pericarpium citri reticulatae powder) which have a synergistic effect. The traditional Chinese medicine composition does not contain an exogenous iron agent, and aims to improve malnutrition caused by chronic hemolytic diseases such as thalassemia. The uniformity and the stability of the product are guaranteed through a specific proportioning and a staged mixing preparation process. Animal experiments show that the composition can significantly improve hemoglobin and red blood cell count of beta-thalassemia model mice, effectively control serum iron and liver iron accumulation levels of the mice, show unique advantages of efficient hematopoiesis and low iron accumulation, and has broad application prospects. And a new nutrition support scheme is provided for improving anemia and abnormal iron metabolism conditions caused by chronic hemolysis.

The invention belongs to the technical field of biology, particularly relates to construction of a beta thalassemia model pig and a gene repair method based on a Prime Editing technology, and provides a method for performing HBB mutant gene repair on CD34 + hematopoietic stem cells of the beta thalassemia pig based on a Prime Editing system, and the HBB mutant gene repair efficiency under different pegRNA editing systems is calculated by analyzing a sequencing result. After pig CD34 + hematopoietic stem cells repaired by HBB mutant genes are injected into beta-thalassemia pigs, related indexes such as blood routine examination, blood biochemistry and HBB expression level in blood cells of a repair group can be well recovered compared with a model group. Therefore, the Prime Editing gene repair method can be used for effectively improving the beta-thalassemia disease, and a powerful technical support is provided for gene repair of the beta-thalassemia.

Provided herein, inter alia, are conjugates comprising a targeting agent (e.g., a hematopoietic cell (e.g., erythroid precursor cell) targeting agent) comprising a protein (e.g., an antibody) that specifically binds to the transferrin receptor (TFR) (e.g., human TFR (hTFR) (e.g., hTFR1)); (b) at least one oligonucleotide operably linked to (b) at least one oligonucleotide that modulates the expression and / or activity of a target gene, nucleic acid (e.g., mRNA) and / or protein expressed by a target cell; as well as methods of making the conjugates and pharmaceutical compositions comprising the conjugates. Further provided herein are methods of utilizing the conjugates, including, for example, methods of treating hemoglobinopathy (e.g., sickle cell disease (SCD) or thalassemia (e.g., alpha-thalassemia, beta-thalassemia, delta-thalassemia, or gamma-thalassemia)).